JPH108158A - Treating device and treatment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently separate and recover mercury and a second metal from a material containing mercury as a first metal and the second metal other than mercury. SOLUTION: The objective material to be treated containing the mercury and the second metal is introduced into an airtight vessel 1501 connected with a first gas exhaust system 1502 provided with a liquid-sealed type vacuum pump. The temp. and the pressure in the airtight vessel 1501 are adjusted and the objective material is heated under reduced pressure to extract te mercury- containing gas. The extracted mercury-containing gas is recovered with the liquid-seal circulating system of the liquid-sealed type vacuum pump. Then, the gas exhaust system 1502 is change over to a second gas exhaust system 1503a, and the temp. and the pressure in the airtight vessel 1501 is adjusted to vaporize the second metal under reduced pressure, and the second metal is condensed in a recovering chamber 1509a and recovered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a processing apparatus and a processing method. In particular, the present invention relates to a processing apparatus and a processing method for separating and recovering mercury from an object containing a harmful substance such as mercury.

The present invention also relates to a processing apparatus and a processing method for separating and recovering mercury from an object containing mercury and a metal other than mercury, and separating and recovering a metal other than mercury.

[0003] The present invention also relates to an apparatus and a method for processing a dry battery.

Further, the present invention relates to an apparatus and a method for treating a dry battery containing a harmful substance such as mercury.

[0005]

2. Description of the Related Art The enormous amount of wastes in modern society is increasing daily, and it is urgently necessary to establish effective treatment techniques.

Although various useful substances are contained in the waste, it is not separated from the waste due to difficulty in separation.
Most waste is disposed of by landfill or incineration. Useful substances in waste have energy problems and resource depletion problems, and it is required to separate and collect and reuse them as much as possible.

On the other hand, harmful substances such as mercury are contained in wastes, and such harmful substances not only cause environmental destruction but also make it difficult to recycle wastes. It is one of the causes. Therefore, if the harmful substances in the waste can be effectively removed, the waste can be actively reused as a treasure trove of resources, and the impact on the environment and living things can be minimized. it can.

[0008] Thus, in order to solve the serious problems surrounding the modern society such as environmental pollution by harmful substances, depletion of resources, and shortage of energy sources, wastes and valuables containing harmful substances are effectively treated. Technology must be established by all means.

However, in recent years, the forms of waste have become complex and diverse, and there are many complex wastes in which a plurality of different materials are integrated, and there are also wastes containing harmful substances. In order to reuse such complex waste as a resource, it is necessary to selectively separate and recover useful and harmful substances from the waste in which multiple different materials are integrated. Such processing technology has not been established yet.

For example, dry batteries are made of iron, zinc, manganese,
Although it has metals such as copper, silver, and mercury as components,
The complex combination of these components makes their processing difficult. Further, the use of an electrolytic solution in a dry battery is one of the reasons for making the treatment difficult.

[0011] Due to the recent growing interest in environmental destruction, electronic devices, instruments, batteries, fluorescent lamps,
Waste disposal such as thermometers is also a social issue. Most batteries are currently mercury-free, but for the time being, there is a need to safely and efficiently dispose of mercury-containing waste batteries that continue to be discharged.

Dry batteries containing mercury are extremely difficult to treat because of their high toxicity and high volatility. It is necessary to treat an enormous amount of batteries, including batteries that have been stored after collection and batteries that have not yet been collected, and it is desired to establish a safe and effective treatment technique for such waste.

Conventionally, waste from dry batteries has been disposed of by landfilling or incineration. However, it has been confirmed that incineration of dry cells containing mercury causes mercury to be discharged into the atmosphere. There is a problem of causing.

[0014] A method of treating exhaust gas containing mercury volatilized at a high temperature due to combustion or the like and removing it into a liquid layer or a solid layer by a wet cleaning device or a dust collecting device is also performed. There is a problem that harmful organic substances are generated from resins and the like. In particular, when a halide is used as a constituent material such as an electrolyte solution or a sealing material of a dry battery, there is a problem that so-called dioxins such as PCDDs and PCDFc are generated.

For example, when vinyl chloride, flame-retardant plastic, or preservative-treated wood is incinerated, halogen gas is generated, and PCDDs (polychlorinated dioxin) and PCDFc (polychlorinated benzofuran) having extremely high toxicity are generated. It has been found that such dioxins are also generated inside the electric dust collector. Further, it is known that dioxin starts to be generated at about 200 ° C., and that the amount of generated dioxin rapidly increases at around 300 ° C., and incineration has a problem from the viewpoint of preventing generation of dioxin.

On the other hand, there are problems that the landfill process is bulky and that it is difficult to secure a place. Further, there is a problem that harmful substances such as mercury in the dry battery are eluted due to corrosion or the like, causing water pollution and soil pollution. Particularly, the amount of constituent metals eluted from the dry battery is rapidly increased due to the acid rain, and there is a concern that it has a serious effect on the environment and living things.

Even if a dry battery is made to be mercury-free, the dry battery contains many metal resources such as iron, zinc, manganese, copper and silver. Is used. Therefore, it is a waste of energy to bury a scoured metal or oxidize it by incineration, and it is desired to establish a technique for reusing it as a resource in a metal state.

Accordingly, it is necessary to establish a technology for separating and recovering mercury and separating and recovering other constituent materials for the disposal of waste containing harmful substances such as mercury. ing.

[0019]

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem. That is, an object of the present invention is to provide a processing apparatus and a processing method capable of effectively processing an object containing mercury.

The present invention separates mercury from objects containing mercury.
It is an object of the present invention to provide a processing apparatus and a processing method that can be collected.

Further, the present invention provides a processing apparatus and a processing method capable of separating and recovering mercury from an object containing mercury and a metal other than mercury and separating and recovering constituent metals other than mercury of an object to be processed. The purpose is to:

Another object of the present invention is to provide a processing apparatus and a processing method capable of removing water from an object containing water and a plurality of constituent metals, such as a dry battery, and effectively separating and recovering the constituent metals. With the goal.

Another object of the present invention is to provide a processing apparatus and a processing method capable of effectively separating and recovering constituent metals of a dry battery.

Another object of the present invention is to provide a processing apparatus and a processing method capable of effectively processing an object containing mercury and suppressing the generation of dioxin.

[0025]

According to the present invention, there is provided a processing apparatus comprising: an airtight container for containing an object containing a first metal which is mercury;
Temperature adjusting means for adjusting the temperature in the airtight container; pressure adjusting means connected to the airtight container and having a first exhaust system for exhausting the airtight container; First control means for controlling the temperature control means and the pressure control means so that metal is vaporized, and a first control means disposed between the airtight container and a first exhaust system, the first vaporized from the object. And first collecting means for condensing and collecting the metal.

Further, the processing apparatus of the present invention is characterized in that the first
A liquid-tight vacuum having an air-tight container for storing an object containing metal, a temperature control means for adjusting the temperature in the air-tight container, and a liquid-circulating system connected to the air-tight container and evacuating the air-tight container. Pressure adjusting means having a first exhaust system provided with a pump, and first controlling means for controlling the temperature adjusting means and the pressure adjusting means such that a first metal in the object is vaporized under reduced pressure. And a second recovery means disposed in the liquid sealing circulation system and recovering the first metal captured by the liquid sealing.

Further, the processing apparatus of the present invention has a first
A liquid-tight vacuum having an air-tight container for storing an object containing metal, a temperature control means for adjusting the temperature in the air-tight container, and a liquid-circulating system connected to the air-tight container and evacuating the air-tight container. Pressure adjusting means having a first exhaust system provided with a pump, and first controlling means for controlling the temperature adjusting means and the pressure adjusting means such that a first metal in the object is vaporized under reduced pressure. A first recovery means disposed between the airtight container and the first exhaust system for condensing and recovering the first metal vaporized from the object; and a first recovery means disposed in the liquid sealing circulation system. And a second recovery means for recovering the first metal captured by the sealing liquid.

Further, the processing apparatus of the present invention has a first
An airtight container containing an object to be treated containing a second metal other than the metal and mercury, temperature control means for adjusting the temperature in the airtight container, and a decompression inside the airtight container which is connected to the airtight container. First pressure adjusting means having a first exhaust system provided with a liquid ring vacuum pump having a liquid sealing circulation system,
A second pressure adjusting means connected to the airtight container so as to be switchable with the first pressure adjusting means and having a second exhaust system for depressurizing the inside of the airtight container; and the airtightness reduced by the first exhaust system. First control means for controlling the temperature control means and the first pressure control means so that the first metal in the object is vaporized in the container, and the hermetic pressure reduced by a second exhaust system A second control unit for controlling the temperature adjustment unit and the second pressure adjustment unit such that a second metal in the object is vaporized in the container; A first collecting means disposed in the liquid condensing means for condensing and collecting the first metal vaporized from the object; and a first metal trapped in the sealing liquid, disposed in the liquid sealing circulation system. A second recovery means for recovering the air, and a second exhaust means disposed between the hermetic container and the second exhaust system. Characterized by comprising a third collecting means for collecting and condensing the second metal vaporized from the object.

Further, the processing apparatus of the present invention has a first
An airtight container containing an object to be treated containing a second metal other than the metal and mercury, temperature control means for adjusting the temperature in the airtight container, and a decompression inside the airtight container which is connected to the airtight container. First pressure adjusting means having a first exhaust system provided with a liquid ring vacuum pump having a liquid sealing circulation system,
A second pressure adjusting means connected to the airtight container so as to be switchable with the first pressure adjusting means and having a second exhaust system for depressurizing the inside of the airtight container; and the airtightness reduced by the first exhaust system. First control means for controlling the temperature control means and the first pressure control means so that the first metal in the object is vaporized in the container, and the hermetic pressure reduced by a second exhaust system A second control unit that controls the temperature adjustment unit and the second pressure adjustment unit so that a second metal in the object is vaporized in the container, and the second control unit is disposed in the liquid sealing circulation system. Second collection means for collecting the first metal captured in the sealing liquid, and third collection means for collecting the second metal disposed between the airtight container and a second exhaust system; It is characterized by having.

The processing apparatus of the present invention may further include a gas cooling means for cooling gas vaporized from the object between the second recovery system and the second exhaust system. 7. Further, the sealing liquid circulation system of the processing apparatus of the present invention may further include a sealing liquid cooling means for cooling the sealing liquid, and a pH adjusting means for adjusting the pH of the sealing liquid. Further, the processing apparatus of the present invention further includes gas neutralizing means for neutralizing the gas vaporized from the object while maintaining the vaporized state of the first metal between the hermetic container and the first exhaust system. You may make it.

Further, the processing apparatus of the present invention may further include a gas cooling means for cooling gas vaporized from the object between the airtight container and the first exhaust system.

Further, the processing apparatus of the present invention may further include an oxygen concentration adjusting means for adjusting the oxygen concentration in the airtight container.

According to the processing method of the present invention, an object containing a first metal, which is mercury, is heated in an airtight container depressurized by a connected first exhaust system to extract a gas containing the first metal. A first extraction step and a first recovery step of condensing and recovering a first metal from the gas between the hermetic container and a first exhaust system are provided.

Further, in the processing method of the present invention, an object containing a first metal, which is mercury, is heated in an airtight container decompressed by a first exhaust system equipped with a liquid ring vacuum pump, and the first metal is heated. A first extraction step of extracting a gas containing, and a second recovery step of capturing and recovering a first metal from the gas with a liquid sealed by the liquid ring vacuum pump. .

Further, in the treatment method of the present invention, an object containing a first metal, which is mercury, is heated in a hermetically sealed container which is depressurized by a first exhaust system equipped with a liquid ring vacuum pump. A first extraction step of extracting a gas containing, a first recovery step of condensing and recovering a first metal from the gas between the airtight container and the exhaust system, and the liquid-ring vacuum pump And a second collecting step of collecting and collecting the first metal from the gas in the sealing liquid.

Further, in the treatment method of the present invention, a dry battery having water, mercury, and resin as constituents is heated in an airtight container decompressed by a first exhaust system equipped with a liquid ring vacuum pump, A first extraction step of thermally decomposing and extracting a gas containing the water and the mercury, and a recovery step of capturing and recovering water and mercury in the gas with a liquid sealed by the liquid ring vacuum pump. And characterized in that:

Further, the processing method of the present invention provides a hermetic airtight system comprising a temperature adjusting means, a first exhaust system provided with a liquid ring vacuum pump, and a second exhaust system switchable with the first exhaust system. A step of housing an object containing a first metal that is mercury and a second metal other than mercury in a container, and vaporizing the first metal in the hermetic container that is depressurized by a first exhaust system Heating said object and extracting a gas comprising a first metal
And a second extraction step of heating the object so that the second metal is vaporized in the airtight container decompressed by the second exhaust system, and extracting a gas containing the second metal. A first recovery step of condensing and recovering the first metal between the hermetic container and the first exhaust system, and capturing and recovering the first metal by liquid sealing of the liquid ring vacuum pump. Second
And a third recovery step of condensing and recovering the second metal between the hermetic container and the second exhaust system.

Further, the processing method of the present invention provides a hermetic air conditioner comprising a temperature adjusting means, a first exhaust system provided with a liquid ring vacuum pump, and a second exhaust system switchable with the first exhaust system. A step of housing an object containing a first metal that is mercury and a second metal other than mercury in a container, and vaporizing the first metal in the hermetic container that is depressurized by a first exhaust system Heating said object and extracting a gas comprising a first metal
And a second extraction step of heating the object so that the second metal is vaporized in the airtight container decompressed by the second exhaust system, and extracting a gas containing the second metal. A second recovery step of capturing and recovering the first metal with a liquid sealed by the liquid-ring vacuum pump;
And condensing and recovering the second metal with the exhaust system
And a collecting step.

Further, the processing method of the present invention comprises a first exhaust system provided with a liquid ring vacuum pump, a second exhaust system switchably connected to the first exhaust system, and a heating means. Containing a dry battery having water, resin, mercury as a first metal and a second metal other than mercury as constituents in the hermetic container, and reducing the pressure in the hermetic container by a first exhaust system. Heating the dry battery, thermally decomposing the resin, and extracting a gas containing the water and the first metal; and a first extraction step between the hermetic container and the first vacuum pump. A first recovery step of condensing and recovering the first metal, a second recovery step of capturing and recovering the water and the first metal by liquid sealing of the liquid ring vacuum pump, Heating the dry battery in the hermetic container depressurized by the exhaust system of
A second extraction step of vaporizing the metal, and a third recovery step of condensing and recovering the second metal between the hermetic container and a second exhaust system.

Further, the processing method of the present invention includes a first exhaust system provided with a liquid ring vacuum pump, a second exhaust system switchably connected to the first exhaust system, and a heating means. Containing a dry battery having water, resin, mercury as a first metal and a second metal other than mercury as constituents in the hermetic container, and reducing the pressure in the hermetic container by a first exhaust system. A first extraction step of heating the dry battery to thermally decompose the resin and extracting a gas containing the water and the first metal; and sealing the water and the first by the liquid sealing of the liquid ring vacuum pump. A second recovery step of capturing and recovering the metal of the second type, and a second extraction step of heating the dry battery in the hermetic container depressurized by a second exhaust system to vaporize the second metal; A third metal for condensing and collecting the second metal between the hermetic container and the second exhaust system; Characterized by comprising a yield process.

Further, the processing method of the present invention comprises a first exhaust system provided with a liquid ring vacuum pump, a second exhaust system switchably connected to the first exhaust system, and a heating means. Storing a dry battery having water, a resin, and a second metal as constituents in the hermetic container, and heating the dry battery in the hermetic container decompressed by a first exhaust system, thereby removing the resin. A first extraction step of thermally decomposing and extracting the water-containing gas, a second recovery step of capturing and recovering the water with a liquid sealed by the liquid ring vacuum pump, and a second exhaust system. Heating the dry battery in the depressurized airtight container to evaporate a second metal; and condensing and recovering the second metal between the airtight container and a second exhaust system. And a third recovery step.

Further, the processing method of the present invention may further include a cooling step of cooling the gas vaporized in the second extraction step immediately after the third recovery step.

In the treatment method of the present invention, the gas vaporized in the first extraction step is neutralized between the hermetic container and the first exhaust system while maintaining the vaporized state of the first metal. A neutralization step may be further provided.

Further, the processing method of the present invention may further include a cooling step of cooling the gas vaporized in the first extraction step between the hermetic container and the first exhaust system.

Further, the treatment method of the present invention may further include a step of exhausting the exhaust gas exhausted from the first exhaust system or the second exhaust system with activated carbon and then exhausting the exhaust gas.

In the treatment method of the present invention, the first extraction step may be performed by adjusting the oxygen concentration.

In the processing method of the present invention, the first extraction step may be performed at 10 Torr or less.

In the treatment method of the present invention, the first extraction step may be performed at 150 ° C. or lower.

That is, the treatment apparatus of the present invention heats an object containing mercury in a depressurized airtight container so that the mercury is vaporized, and condenses the vaporized mercury between the airtight container and the exhaust system. Alternatively, the liquid is captured by a liquid sealed in an exhaust system provided with a liquid ring vacuum pump. Here, the capture means that the mercury vaporized from the object to be treated is sealed in various modes, including, for example, mixing of liquefied mercury such as mist-like mercury into the sealing liquid and condensation of gaseous mercury into the sealing liquid. To move to In the present invention, since the mercury-containing gas is vaporized from the object to be treated by depressurizing the inside of the hermetic container, the mercury-containing gas is produced at a lower temperature compared to incineration, roasting, and heating under oxidizing conditions. Is extracted. Further, by reducing the pressure in the hermetic container, the oxygen concentration also decreases, and the inside of the hermetic container becomes a non-oxidizing atmosphere, so that oxidation of vaporized mercury is prevented.

On the other hand, when the pressure is reduced, the thermal conductivity in the airtight container decreases. However, if the inside of the airtight container is a non-oxidizing atmosphere, the object to be treated is not oxidized even under atmospheric pressure or under pressure. Therefore, the inside of the hermetic container is adjusted to a non-oxidizing atmosphere and a pressure close to the atmospheric pressure, heated to a predetermined temperature in such a state of good thermal conductivity, and then the inside of the hermetic container is depressurized to reduce the first metal You may make it evaporate.

As the temperature adjusting means provided in the processing apparatus of the present invention, a heating means and a temperature measuring means may be used. As the heating means, various types of convection heating, radiant heating, and the like may be selected as necessary or used in combination. For example, resistance heating such as a sheathed heater may be used, or gas, heavy oil, light oil, or the like may be burned. Further, an induction heating means may be used. Various temperature sensors may be used as the temperature measuring means.

As the pressure adjusting means provided in the processing apparatus of the present invention, an exhaust means or a pressurizing means and a pressure measuring means may be used in combination as required. Various vacuum pumps such as a rotary pump, an oil diffusion pump, and a booster pump may be used as the exhaust means. In the present invention, when exhausting a gas containing water, mercury, or a decomposition product of a resin, a liquid ring vacuum pump is used as an exhaust means. By using a liquid ring vacuum pump, gas or mist containing moisture, mercury, decomposition products of resin, etc. can be effectively handled, and moisture, mercury, and resin contained in exhaust gas can be decomposed. Products and the like are captured. Therefore, these substances can be recovered from the sealing liquid, and the harmful substances can be prevented from escaping out of the system. As a liquid sealing liquid pump, not only water but also ethylene glycol, propylene glycol, monochlorobenzene, dichlorobenzene, methanol, ethanol, toluene, xylene, kerosene, acrylonitrile, hexane, ethylbenzene, styrene, etc. It may be. Furthermore, when the gas to be exhausted is an acidic gas, an alkaline solution may be used for sealing the liquid ring vacuum pump.

The liquid ring vacuum pump may be provided with one or more gas ejectors using air at atmospheric pressure as a driving fluid, if necessary. By providing such a gas ejector, a higher degree of vacuum can be obtained, and the power required for driving the liquid ring vacuum pump is reduced. Further, a mechanical booster (Roots pump) may be provided on the suction side of the liquid ring vacuum pump. By connecting a mechanical booster to the suction side of the liquid ring vacuum pump, a larger pumping speed can be obtained, and a higher degree of vacuum can be obtained.

As the pressurizing means, for example, a gas may be introduced into the system from a gas reservoir. Using a rare gas such as N ₂ or Ar as the reserve gas, the pressure in the hermetic container may be adjusted, and the oxygen concentration in the hermetic container may be adjusted. The pressure measuring means may be used in accordance with the degree of vacuum for measuring a Bourdon tube, a Pirani gauge, or the like. For example, when the oxygen concentration in the hermetic container is adjusted by using a rare gas such as N ₂ or Ar as a reserve gas, an oxygen concentration measuring means such as a zirconia sensor may be provided in the hermetic container.

Then, the object to be treated containing mercury is accommodated in an airtight container, and the temperature adjusting means and the pressure adjusting means, or the temperature adjusting means or the temperature adjusting means are arranged such that the mercury in the object to be treated is vaporized under a pressure lower than the atmospheric pressure. The controlling means controls the controlling means, the pressure controlling means and the oxygen concentration controlling means. Although the boiling point of mercury at 760 Torr is 356.58 ° C., mercury can be vaporized at a lower temperature by reducing the pressure in the airtight container (see the figure).

For example, mercury is 357 at 760 Torr.
At 262 ° C at 10 ² Torr.
At 0 Torr, it is about 184 ° C, and at 1 Torr, it is about 127
° C., the 10 ^-1 Torr at about 83 ° C., 10 ^-2 Torr
At about 47 ° C. and at about 18 ° C. at 10 ⁻³ Torr.

By performing the treatment under the reduced pressure, the mercury-containing gas is extracted at a lower temperature from the object to be treated. Therefore, generation of harmful substances such as dioxin is suppressed.

Such control includes, for example, a temperature detecting means for detecting the temperature in the airtight container and a heating means for heating the inside of the airtight container based on the relationship between the pressure in the airtight container and the boiling point of mercury corresponding to this pressure. Alternatively, a pressure detecting means for detecting the pressure in the airtight container and an exhaust system for reducing the pressure in the airtight container may be driven. Such a control means may be stored in a memory means of the computer or a recording medium such as a floppy disk as a program of the computer.

The mercury-containing gas vaporized from the object to be treated in the hermetic container is introduced into an exhaust system connected to the hermetic container. Mercury contained in the gas is condensed by providing a means for condensing gas vaporized from the object to be treated between the airtight container and the exhaust system. This mercury may be recovered, for example, by shutting off the condensing means from the airtight container and the exhaust system, then introducing a rare gas such as N ₂ or Ar and bringing the pressure to atmospheric pressure.

As described above, mercury may be captured in the sealed liquid by using a liquid ring vacuum pump as the exhaust means. Mercury trapped in the sealing liquid may be recovered from the sealing circuit of the liquid ring vacuum pump.
For example, a mercury settling tank may be provided in the sealing liquid circulation system, or a liquid cyclone or the like may be used.

The sealing liquid circulation system may be provided with a sealing liquid cooling means for cooling the circulating sealing liquid, and a pH adjusting means for adjusting the pH of the circulating sealing liquid. The sealing liquid is used for improving the pumping speed of the liquid ring vacuum pump, for capturing mercury with the sealing liquid, and for holding mercury captured in the sealing liquid in the sealing liquid. Is preferably cooled. Further, when the pH of the sealed liquid changes due to the gas vaporized from the object to be processed, the pH of the sealed liquid is supplied to the sealed liquid circulation system.
May be provided to maintain pH within a predetermined range.

The sealing liquid circulating in the sealing liquid circulation system has a certain mercury concentration, but this sealing liquid does not need to be particularly treated because it is used in a closed system. When the sealing liquid needs to be treated, for example, it may be treated with a chelating agent, or may be treated using a ferrite method, a reduction vaporization method, or the like. Further, low concentration mercury may be treated using a mixed solution of potassium permanganate and sulfuric acid.

In the processing apparatus of the present invention, a gas neutralizing means may be provided between the hermetic container and the first exhaust system for neutralizing gas vaporized from the object to be processed. As the gas neutralizing means, for example, a gas neutralizing unit filled with, for example, granular calcium hydroxide or the like may be provided between the airtight container and the first exhaust system. Further, the unit may be filled with calcium chloride or the like to reduce the water content in the gas.

The gas neutralizing means may be operated at a temperature at which mercury contained in the gas keeps its vaporized state. By performing gas neutralization or the like while maintaining the vaporized state of mercury, mercury does not condense in the gas neutralization unit, so that replacement of the unit is facilitated. Such temperature adjustment may be performed as needed.For example, the temperature and pressure in the gas neutralizing means are detected, and the gas is adjusted so that the temperature becomes higher than the boiling point of mercury at the pressure. The neutralizing means may be heated.

By providing such a gas neutralizing means, for example, NOx, S
Even when Ox or halogen is contained, the concentration is reduced. By removing such components, the vacuum pump serving as the exhaust means is protected. In addition, the fluctuation of the pH of the sealed liquid circulation system is suppressed, and the amount of generated salts is also suppressed. In particular, by lowering the halogen concentration, for example, PCDDs, PCDFs
And the production of dioxins is suppressed. The gas neutralizing means does not need to completely remove components such as NOx, SOx and halogen from the gas. Components such as NOx, SOx and halides that have passed through the gas neutralizing means are trapped in the first exhaust system by the sealing of a liquid ring vacuum pump. Furthermore, for example, an activated carbon adsorption tower or a multi-exhaust gas chamber is provided after the exhaust port of the liquid ring vacuum pump,
The exhaust gas may be further purified.

Further, in the processing apparatus of the present invention, a gas cooling means for cooling gas vaporized from the object to be processed may be provided between the airtight container and the first exhaust system. This gas cooling means may be used as a condensing means for cooling the gas vaporized from the object to be treated and condensing the mercury, or may be cooled while maintaining the vaporized state of the mercury contained in the gas.

As the gas cooling means, for example, a radiator through which a refrigerant (including a gas) flows may be provided in the system. If mercury is not desired to be condensed by the gas cooling means, the temperature of the refrigerant may be appropriately adjusted as described above.

By providing such a gas cooling means, even when the extraction temperature of the mercury-containing gas is high, even if the
The generation of dioxin which starts to be generated at around 300 ° C. and rapidly increases at around 300 ° C. can be suppressed. When extracting a mercury-containing gas from an object to be treated, for example, 10 ² To
about 250 ° C. or more at rr, about 180 at 10 Torr
Although it is necessary to heat the mixture to a temperature of not less than ℃, even in such a case, the production of dioxin is suppressed.

Further, the gas cooling means may be used as a means for condensing mercury from a mercury-containing gas. The mercury condensed in the cooling step may be recovered by shutting off the condensing part from the airtight container and the exhaust system as described above. Mercury that has passed without being condensed is recovered by a liquid-ring vacuum pump at the subsequent stage.

As described above, according to the present invention, the mercury-containing object to be treated is introduced into the airtight container, heated under reduced pressure, and the extracted mercury-containing gas is cooled to condense and recover mercury. can do. Further, by extracting the extracted mercury-containing gas with a liquid ring vacuum pump, mercury can be captured and collected by the liquid sealing of the liquid ring vacuum pump.

According to the present invention, not only mercury is separated and recovered from the object to be treated, but also constituent metals (second metal) other than mercury of the object to be treated can be recovered from the object to be treated.

In the processing apparatus of the present invention for processing mercury and metals other than mercury, the processing apparatus can be switched to a first exhaust system equipped with a liquid ring vacuum pump, or connected to an airtight container in parallel. There is provided a second exhaust system, and third recovery means disposed between the airtight container and the second exhaust system. Further, a second control means is provided for controlling the temperature and pressure in the airtight container so that the second metal is vaporized under reduced pressure.

That is, after mercury is vaporized from the object to be treated, the temperature and pressure in the hermetic container are adjusted so that the second metal is vaporized under reduced pressure, and the second metal is vaporized from the object to be treated. Let it. By adjusting the temperature and pressure conditions in the hermetic container, the second metal can be selectively vaporized from the object to be treated. Here, the second metal is not limited to one element, and may be plural. When treating the second metal of a plurality of elements, the second exhaust system may be provided with a plurality of systems. The same applies to the third collecting means. In this case, for example, a plurality of levels of control may be performed so that the second control means can process a plurality of second metals.

For example, the boiling point of Zn at 760 Torr is about 907 ° C., but at 100 Torr, it is about 736 ° C.
About 593 ° C at 10 Torr and about 4 at 1 Torr
At 70 ° C. and 10 ⁻⁴ Torr, it evaporates at about 260 ° C. For example, the boiling point of Pb at 760 Torr is about 17
It is 44 ° C, but at 100 Torr, it is about 1421 ° C, 1
At ⁰ Torr, about 1162 ° C., and at 10 ⁻¹ Torr, about 8
At 27 ° C. and 10 ⁻³ Torr, it evaporates at about 627 ° C. Further, for example, the boiling point of Li at 760 Torr is about 1
372 ° C, but at 100 Torr, about 1097 ° C,
Approximately 881 ° C. at 10 Torr and approximately 720 at 1 Torr
It vaporizes at about 450 ° C. at 10 ° C. at 10 ^-3 Torr. Such a relationship between the vapor pressure and the temperature may be calculated using, for example, the Antoine equation or the Harlacher-Braun equation. Further, it may be obtained from various data sources.

By controlling the temperature and pressure conditions in the hermetic container according to the constituent metals of the object to be treated, the second metal is vaporized according to the controlled temperature and pressure conditions. Since the pressure in the airtight container is reduced, the second metal evaporates at a temperature lower than that under normal pressure, like the first metal. Further, by reducing the pressure in the hermetic container, the oxygen concentration also decreases, and the inside of the hermetic container becomes a non-oxidizing atmosphere. Therefore, oxidation of the vaporized second metal can be prevented and the second metal can be recovered in a metal state.

As the exhaust means provided in the second exhaust system,
For example, various vacuum pumps such as a rotary pump, an oil diffusion pump, and a booster pump may be used. In the present invention, since the gas containing moisture, mercury, and a decomposition product of a resin is exhausted in advance by the first exhaust system, the second exhaust system has a higher exhaust capacity than the first exhaust system. High evacuation means can be used and higher degrees of vacuum can be reached. Therefore, a metal having a higher boiling point can be vaporized from the object to be treated. The second gaseous vaporized from the object to be treated in the airtight container decompressed in this way.
The metal may be recovered by third recovery means disposed between the airtight container and the second exhaust system. As the third recovery means, for example, a recovery chamber having an exhaust system may be connected to an airtight container, and the vaporized metal may be cooled to a melting point or lower and condensed and recovered in the chamber. The inside of the recovery chamber may have, for example, a countercurrent structure or a spiral structure. Alternatively, a valve or an openable / closable partition may be provided between the collection chamber and the airtight container, and between the collection chamber and the exhaust system. That is, when metal vaporized from the object to be treated is introduced into the collection chamber,
The collection chamber may be closed and cooled to condense and collect the metal.

Regardless of whether the vaporized metal is continuously condensed and recovered, or whether the vaporized metal is condensed and recovered in a batch process, the recovery efficiency increases as the residence time of the vaporized metal in the recovery chamber increases.

Further, N ₂ or a rare gas may be introduced into the hermetic container as a carrier gas. The vaporized metal is efficiently introduced into the collection chamber by the carrier gas. As described above, the third collection means may include a plurality of systems. The same metal may be recovered by a plurality of third recovery means, or the temperature and pressure in the hermetic container are adjusted stepwise to selectively vaporize the plurality of metals, respectively. The collection means may be switched to another collection means. The third collecting means may be connected in multiple stages.

With such a configuration, the processing apparatus of the present invention can process an object having a first metal which is mercury and a second metal other than mercury. In the treatment apparatus of the present invention, water, mercury, and a decomposition product gas of the resin generated from the object to be treated are collected by the first collection unit or the second collection unit connected to the airtight container. Therefore, sufficient pressure reduction and heating can be performed in the airtight container so that the second metal is vaporized. Further, in the airtight container, the resin is decomposed under the condition that the metal of the object to be treated is not oxidized or vaporized, so that the metal is separated and recovered from the object to be treated in a metal state. In the processing apparatus of the present invention, the first metal and the second metal may be separated and recovered from the object to be processed by gradually adjusting the conditions in the airtight container, or the first metal may be used. And a second hermetic region for treating the second metal may be continuously treated by being separated by an openable / closable partition.

The processing apparatus of the present invention which performs the treatment of the first metal, the treatment of the second metal, and the first hermetic region and the second hermetic region separated by a partition in a continuous manner is a mercury-containing material. A processing apparatus for processing an object to be processed having a first metal and a second metal as constituents, the first processing apparatus including a temperature control unit and a pressure control unit for vaporizing a first metal which is mercury. A first hermetic region, a second hermetic region including a temperature adjusting device and a pressure adjusting device for evaporating a second metal in the object to be processed, which is separated from the first hermetic region by a partition that can be opened and closed;
First or second recovery means for recovering gaseous mercury vapor connected to the first hermetic container, and third recovery means for recovering vaporized second metal from the processing object connected to the second hermetic container. And a collecting means.

As the temperature adjusting means, a heating means and a temperature measuring means may be used. As the heating means,
Various types of convection heating, radiation heating, and the like may be selected as needed, or may be used in combination. For example, resistance heating such as a sheathed heater may be used, or gas, heavy oil, light oil, or the like may be burned. Further, an induction heating means may be used. Various temperature sensors may be used as the temperature measuring means.

In the first hermetic zone, the pressure is reduced so that the first metal is vaporized at a temperature lower than the atmospheric pressure, and the first metal, which is mercury at a temperature and pressure such that the second metal does not vaporize, is used. Vaporizes metal. The vaporized gas of the first metal, which is vaporized mercury, is recovered by the first recovery means or the second recovery means.

As the pressure adjusting means, an exhaust means or a pressurizing means and a pressure measuring means may be used. Various vacuum pumps such as a rotary pump, an oil diffusion pump, and a booster pump may be used as the exhaust means. As the pressurizing means, for example, a gas may be introduced into the system from a gas reservoir. The pressure measuring means may be used in accordance with the degree of vacuum for measuring a Bourdon tube, a Pirani gauge, or the like.

Further, a purge area may be provided adjacent to the first hermetic area as required. The purge area may be provided with a pressure adjusting means such as an exhaust system or a pressurizing system, and a temperature adjusting means for preheating or cooling the object to be processed. Further, a carrier gas introduction system for gas replacement in the system may be provided, and the carrier gas introduction system may also serve as a pressurization system.

Object to be Processed The object to be processed is introduced into the first hermetic zone from outside the apparatus via the purge zone.

By providing the purge region, the first hermetic region is isolated from the outside of the apparatus when the object to be treated is introduced into the first hermetic region. Further, since the inside of the first hermetic zone is constantly evacuated to maintain the reduced pressure, the load on the vacuum pump is reduced.

Similarly, a purge region may be provided adjacent to the second hermetic region. The object to be processed is the second
From the airtight region through the purge region. By providing the purge region after the second hermetic region, the second hermetic region is isolated from the outside when the object to be processed is taken out of the second hermetic region. Therefore, the load on the vacuum pump is reduced because the inside of the second hermetic region is constantly evacuated to maintain the reduced pressure state. Further, the object to be treated can be kept shut from the outside air until the temperature of the heated object to be treated is cooled to a temperature that is not oxidized even under atmospheric pressure.

That is, the purge area functions as a buffer area between the outside of the apparatus and the first and second hermetic areas from the viewpoint of the maintenance of the apparatus and the maintenance of the object to be processed.

The first hermetic zone and the second hermetic zone of this processing apparatus are separated by a partition which can be opened and closed. This partition keeps the airtightness of each region and the heat insulation of each region. For example, a vacuum door for maintaining airtightness and a heat insulating door for maintaining heat insulation may be used in combination. If the first and second hermetic regions are separated by a partition wall such as a heat insulating door-a vacuum door-a heat insulating door, the airtightness and the heat insulating property of each region are maintained. By arranging the heat insulating door between the vacuum door and the area separated by the vacuum door, the vacuum door can be protected from a thermal load even when a large thermal load is applied to the vacuum door. Can be. In this case, the vacuum door is protected from the heat of the first and second hermetic zones.

Such a partition is naturally formed between the outside of the apparatus and the purge region, between the purge region and the first hermetic region,
The partition is also provided between the second hermetic region and the purge region, but what kind of partition is provided may be designed as needed. For example, when the thermal load of the purge chamber is small, a vacuum door may be provided.

In the first airtight region into which the object to be processed is introduced, the state of the second metal in the object to be processed is maintained,
The temperature and pressure conditions are adjusted so that the first metal, which is mercury, is vaporized under reduced pressure. The temperature and pressure conditions may be set in advance, or the measured values of the temperature and the pressure may be fed back to the heating unit, the pressure adjusting unit, and the like for control. The same applies to the second hermetic zone.

When the pressure in the first hermetic zone is reduced, the oxygen concentration also decreases, and the object to be processed is not rapidly oxidized by heating.

On the other hand, when the pressure is reduced, the thermal conductivity in the hermetic zone decreases. However, if the inside of the first hermetic region is a non-oxidizing atmosphere, the object to be treated is not oxidized even under the atmospheric pressure or under the pressure. Therefore, if the inside of the first hermetic region is a non-oxidizing atmosphere, heating at normal pressure is also possible and the thermal conductivity in the system is improved. Thereafter, the first metal may be vaporized by reducing the pressure in the hermetic region.

The vaporized mercury-containing gas is the first gas as described above.
Or the second collecting means. The first and second collecting means may be provided in a plurality of systems.

In the first hermetic zone, the first metal of the object to be processed is vaporized almost completely, and the vaporized first metal is recovered. Therefore, the second metal in the processing object is not oxidized and exists in the processing object without being vaporized. Then, in this state, the object to be processed is transferred from the first hermetic zone to the second hermetic zone.

In the processing apparatus of the present invention, the object to be processed heated in the first hermetic container is cooled by the second object without being cooled.
Is introduced into the hermetic zone. Therefore, the input energy in the second hermetic zone is largely saved, and the heating time is also reduced.

In the second hermetic region into which the object to be processed is introduced, the temperature and pressure conditions are adjusted so that the second metal in the object to be processed is vaporized. By reducing the pressure in the second hermetic zone, the second metal in the object to be treated evaporates at a lower temperature than under normal pressure. Further, since the oxygen concentration also decreases and the inside of the second hermetic region becomes a non-oxidizing atmosphere, the second metal state of the vaporized second metal is maintained.

For example, the boiling point of Zn at 760 Torr is 1203 K, while the boiling point at 1 Torr is 743 K.
K, the boiling point at 10 ^-4 Torr is 533K.

For example, 760 Torr (1a) of Pb
tm) is 2017K, but 10 ^-1 To
The boiling point at rr is 1100K, and the boiling point at 10 ^-3 Torr is 900K.

As described above, the second metal is vaporized in the second hermetic zone according to the temperature and pressure conditions. The temperature and pressure conditions in the hermetic container may be adjusted stepwise according to the second metal to be processed, so that the second metal is selectively vaporized.

Further, when introduced into the second hermetic zone,
Since the first metal of the object to be processed has been removed, the second metal
The metal is recovered in high purity as it is, and the load on the vacuum pump is reduced.

[0102] The third recovery means recovers the second metal vaporized in the second hermetic zone.

For example, a recovery chamber having an exhaust system may be connected to the second hermetic zone, and the second metal vaporized in this chamber may be cooled to a melting point or lower to condense and recover. The inside of the recovery chamber may have, for example, a countercurrent structure or a spiral structure. Alternatively, a valve or an openable / closable partition may be provided between the collection chamber and the second hermetic region and between the collection chamber and the exhaust system. That is, when the second metal vaporized from the object to be processed is introduced into the collection chamber, the collection chamber is closed and cooled, and the second metal is cooled.
May be condensed and recovered.

Regardless of whether the vaporized second metal is continuously condensed and recovered, or whether it is condensed and recovered in a batch process,
The longer the residence time of the vaporized second metal in the recovery chamber, the higher the recovery efficiency.

Further, N ₂ or a rare gas may be introduced into the second hermetic region as a carrier gas. The vaporized second metal is efficiently introduced into the collection chamber by the carrier gas.

The third collecting means may be provided with a plurality of systems. The same second metal may be recovered by a plurality of third recovery means, or the temperature and pressure in the second hermetic zone may be adjusted stepwise to selectively recover the plurality of second metals. And the third collection means of a plurality of systems may be switched and collected.

Further, the third collecting means may be connected in multiple stages.

With such a configuration, the processing apparatus of the present invention can also process an object to be processed having a first metal and a second metal as mercury as constituent materials. The processing apparatus of the present invention includes a first hermetic region for vaporizing a first metal that is a constituent metal of a processing target object in front of a second hermetic region for vaporizing a second metal that forms a processing target object. This makes it possible to process an object to be processed having the first metal and the second metal, which are mercury, as constituent materials. The vaporized gas of the first metal, which is mercury of the object to be treated, which is generated in a large amount in the hermetic zone, is collected by the first collecting section or the second collecting section connected to the first hermetic zone. Therefore, sufficient heating and decompression can be performed in the second hermetic region so that the second metal is vaporized.

Further, in the first hermetic zone, the first metal, which is mercury, is vaporized under the condition that the second metal of the object to be treated does not vaporize, so that the second metal is efficiently separated from the object to be treated. Collected.

The processing apparatus of the present invention may be provided with an oxygen concentration adjusting means in the first hermetic zone. By this oxygen concentration adjusting means, the oxygen concentration in the first hermetic zone is adjusted independently of the total pressure in the first hermetic zone.

By adjusting the oxygen concentration in the first hermetic zone, the degree of freedom of the processing in the first hermetic zone increases. For example, oxidation of the object to be processed can be prevented without lowering the thermal conductivity in the first hermetic region.

As the oxygen concentration adjusting means, for example, an oxygen concentration sensor as an oxygen concentration measuring means and a carrier gas introduction system may be used.

As the oxygen concentration sensor, for example, a so-called zirconia sensor employing zirconia (zirconium oxide) may be used, or the absorption of, for example, CO and CO ₂ may be measured by infrared spectroscopy. Furthermore, G
C-MS may be used, and may be selected as needed or used in combination.

Examples of the carrier gas include N ₂ ,
A rare gas such as Ar may be used. The carrier gas not only regulates the oxygen concentration in the first hermetic zone, but also efficiently vaporizes the first metal, which is mercury, into the first recovery means and the second recovery means. Led to. Further, the pressure adjusting means may also be used.

Further, in the processing apparatus of the present invention, a plurality of second hermetic regions may be provided. By providing a plurality of second hermetic regions, a plurality of second metals contained in the object to be processed can be selectively vaporized and collected.

In the present invention, by continuously performing the step of vaporizing the first metal and the step of vaporizing the second metal, it is possible to greatly suppress the energy input in the subsequent steps.

That is, since the thermal conductivity of the gas decreases as the pressure decreases, it is necessary to input more energy as the pressure in the airtight container is reduced in the step of vaporizing the second metal. However, in the processing system and the processing method of the present invention, the first metal vaporization step is also a preheating step of the second metal vaporization step, so that the energy input in the second metal vaporization step is largely saved. can do.

Further, since the water and the like in the object are removed from the object in the step of vaporizing the first metal, there is no adverse effect on the step of vaporizing the second metal.

In the present invention, an object to be treated in which a metal and water, an aqueous solution, a gel and the like are integrated, such as a dry battery, can be treated. In the case where the object to be treated contains mercury as a metal, moisture is collected by sealing the liquid with a liquid ring vacuum pump together with or before vaporizing mercury as described above. When the object to be treated does not contain mercury, the same treatment can be performed. That is,
In the present invention, water vaporized in the depressurized airtight container or airtight region is captured by the liquid sealing of the liquid ring vacuum pump.

When processing a dry battery having a sealing member such as a gasket or a separator made of a resin (including paper), for example, these sealing members may be first thermally decomposed and then processed. . By thermally decomposing these sealing members under reduced pressure or in a non-oxidizing atmosphere, the joining by the sealing members is released, and components of the dry battery, for example, components such as a positive electrode active material, a negative electrode active material, and an electrolyte are easily extracted. be able to. During thermal decomposition of the resin, the inside of the airtight container may be pressurized as necessary.

If the object to be treated such as a dry battery is ruptured due to heating or decompression, and there is a risk of damaging the apparatus, the object to be treated may be placed, for example, in a steel container having an internal and external communication. The object may be stored and the container may be introduced into the processing apparatus. By using the container having the air permeability between the outside and the inside, the constituents of the object to be treated can be extracted, and at the same time, the apparatus can be protected from the rupture of the object to be treated.

In the present invention, the present invention covers both dry batteries that are now mercury-free and dry batteries that have been used mercury in the past.

A manganese dry battery is known as a dry battery, and a manganese dry battery, an alkaline manganese battery, a mercury battery, a silver oxide battery, an air battery and the like are known as dry batteries.

According to the JIS, the types of manganese dry batteries are commonly known as “single”, “single”, “single”, “single”, “single” and “stacked” 9V.
The type is determined. Batteries with a portable structure using zinc for the negative electrode, manganese dioxide for the positive electrode, and an aqueous solution of ammonium chloride and zinc chloride as the electrolyte are collectively called manganese dry batteries. In addition to the purpose of amalgamating the zinc reaction surface, mercuric chloride was also dissolved in the electrolyte in the positive electrode mixture. Further, in order to improve the mechanical and chemical properties of zinc, an alloy containing about 0.1 to 0.2% of lead and about 0.03 to 0.1% of cadmium is used in processing cast iron. is there. Although the technology for manufacturing without using mercury is established in Japan at present, there are a large number of mercury-containing manganese dry batteries that must be properly treated, including uncollected and already recovered parts.

As the type of alkaline manganese battery, J
The IS defines 10 types of alkaline dry batteries of the same type as the manganese dry batteries, such as A1, AA, AA, AA, and AAA, and five types of alkaline button batteries. A battery using electrolytic manganese dioxide for the positive electrode, zinc powder or gelled zinc for the negative electrode, and 8 to 11% caustic potash saturated with zinc oxide for the electrolytic solution is called an alkaline manganese battery. Alkaline manganese batteries have a battery configuration in which the electrolyte of a manganese dry battery is simply changed to a KOH aqueous solution. However, in practice, many improvements have been made, such as the use of powdered zinc particles, because of the passivation of zinc by changing the electrolyte. It has been done. However, while powdered zinc has a large reaction surface area and is suitable for large-current discharge, it has amalgamated with a large amount of mercury and has maintained corrosion resistance. The effects of using mercury in alkaline manganese batteries include increasing the hydrogen overvoltage of zinc, which is effective in improving the corrosion resistance of zinc, preventing passivation (due to zinc hydroxide film) during discharge, and Promoting uniform anodic dissolution and improving electrical contact between zinc particles. Conventionally, the mercury content of zinc in an alkaline battery was 7 to 9%.
As a result of the industry's reduction of mercury, 3% since 1986,
It became 1.5% from 987 and has recently been mercury-free. However, there are a large number of mercury-containing alkaline manganese dry batteries that must be properly treated, including unrecovered and already recovered parts.

The structure of the mercury battery is composed of a positive electrode formed by mixing mercuric oxide and fine graphite and a zinc negative electrode. The electrolytic solution is prepared by adding carboxymethyl cellulose (CMC) to a potassium hydroxide aqueous solution saturated with zinc acid. It is a gel. Zinc is used by amalgamating a powder (particle size: 100 to 300 μm) with mercury (mercury concentration: about 6%).
Since the mercury battery has excellent flatness of the discharge voltage, it has been widely used as a reference power supply for a measuring instrument, a power supply for exposure of a camera, etc., and especially for a hearing aid. Since mercury is used for the electrode (positive electrode) main body, mercury-free mercury cannot be obtained as in a manganese battery or an alkaline manganese battery used only for amalgamation of a zinc negative electrode.

The silver oxide battery is made of silver oxide (Ag ₂ O or A
gΟ) as a positive electrode, zinc as a negative electrode, and an alkali metal hydroxide (NaΟΗ or ΚΟΗ) as an electrolyte.
Depending on the type of the positive electrode, it is classified into a type using silver oxide (Ag ₂ O) and a type using silver peroxide (AgΟ). Most of the button type primary batteries have silver oxide (Ag ₂ O) as a positive electrode. Like the alkaline manganese battery and the mercury battery, powdered zinc is used for the negative electrode, and amalgamation is performed by adding mercury. Generally, the content of mercury is close to 10% with respect to zinc.

A battery system using oxygen in air as a positive electrode and a metal as a negative electrode is generally called an air battery. Zinc, aluminum and the like are used for the negative electrode. An air zinc battery using zinc has been researched and developed since ancient times as a primary battery.
Button-type air batteries have appeared on the market since the year. The air battery has a discharge voltage of about 1.3 V, is compatible with a mercury battery, and has a flat voltage. Therefore, attention has been focused on alternative batteries to mercury button batteries from the viewpoint of environmental protection mainly in the field of hearing aids. However, the characteristics of the battery deteriorate due to the entry and exit of water vapor and carbon dioxide in the atmosphere through the air holes for taking in oxygen, and the evaporation of the water of the electrolytic solution. In particular, for small batteries, the storability when the air holes are opened,
Problems remain for long-term use and leakage resistance.

According to the processing apparatus and the processing method of the present invention, these dry batteries are heated under reduced pressure to vaporize mercury, moisture, etc., and are captured by, for example, a liquid-sealing vacuum pump, and the liquid is sealed. Collect from Next, the dry battery is further heated under reduced pressure to vaporize a second metal other than mercury, such as Li, Cd, Pb, Zn, etc., which constitutes the dry battery, and condenses and collects it in a collection chamber.

[0130]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) FIG. 1 is a diagram schematically showing an example of the configuration of a processing apparatus according to the present invention.

The processing apparatus 1100 is provided with an airtight container 1101 for storing an object to be processed containing mercury, an exhaust unit 1102 for exhausting the inside of the container, and a gas container 1101 provided between the airtight container 1101 and the exhaust unit 1102. And a recovery unit 1103 for condensing and recovering mercury from the mercury-containing gas extracted from the object to be processed.

The airtight container 1101 is provided with a temperature adjusting means 1104 (not shown) for adjusting the temperature inside the container and a pressure adjusting means 1105 for adjusting the pressure inside the container.
As described above, the exhaust unit 1102 is also a part of the pressure adjusting unit. The temperature adjusting unit 1104 includes a temperature sensor 1106 (not shown) for detecting the temperature inside the airtight container 1101 and a heater 1107 (not shown) that is a heating unit for heating the inside of the airtight container. Further, the pressure adjusting means 110
Reference numeral 5 includes a pressure sensor 1108 (not shown) for detecting the pressure in the airtight container 1101, and the above-described exhaust means 1102. Exhaust means 1102 of this processing apparatus 1100
Adopted a configuration in which a booster pump was connected in front of the rotary pump. The structure of the evacuation means may be appropriately selected and used depending on the required degree of vacuum, the size of the apparatus, and the like, and a liquid ring vacuum pump may be used. In the processing apparatus 1100, the airtight container 1101
The pressure can be reduced to 0 ^-3 Torr.

FIG. 2 is a diagram schematically showing an example of the structure of the temperature adjusting means 1104, the pressure adjusting means 1105, and the control means 1110 for controlling the temperature adjusting means 1104 and the pressure adjusting means 1105 included in the processing apparatus 1100 shown in FIG. The control unit 1110 controls the temperature adjustment unit 1104 and the pressure adjustment unit 1105 so that mercury is vaporized under reduced pressure from the object to be treated introduced into the airtight container 1101. FIG. 3 is a diagram showing the relationship between the vapor pressure of mercury and the pressure. Mercury vaporizes at 357 ° C. (boiling point) at 760 Torr, for example.
0 ² Torr at about 262 ° C., about 1 in 10Torr
At 84 ° C., about 127 ° C. at 1 Torr, and 10 ⁻¹ Torr
r at about 83 ° C., at 10 ⁻² Torr at about 47 ° C.
At 0 ^-3 Torr, it evaporates at about 18 ° C.

Accordingly, for example, according to the pressure in the hermetically sealed container 1101, the temperature is raised to a temperature higher than the temperature at which mercury vaporizes at that pressure, for example, a temperature several tens of degrees higher than the temperature at which mercury vaporizes at that pressure. What is necessary is just to control the temperature control means 1104 so that it may become. Alternatively, a profile of the temperature and pressure conditions required for the processing may be set in advance, and the temperature adjustment unit 1104 and the pressure adjustment unit 1105 may be controlled based on the profile. For example, the inside of the hermetic container 1101 is heated to about 80 to 90 ° C. while keeping the pressure at about 760 Torr, and then the inside of the hermetic container 1101 is reduced to a predetermined pressure and the object to be treated is heated to vaporize mercury. You may. Although the heat conductivity in the hermetic container 1101 decreases due to the decompression, the heating efficiency can be improved by reducing the pressure in the hermetic container 1101 after preheating the object to be treated in this way. Such a control means may be stored in a memory means of the computer or a recording medium such as a floppy disk as a program of the computer. Thus, the temperature control means 1104
And the pressure adjusting means 1105 to control the airtight container 1101
The object to be treated introduced into the inside is heated under reduced pressure to extract a mercury-containing gas from the object to be treated.

The mercury-containing gas vaporized from the object to be treated is condensed and collected by the collecting means 1103. That is, the recovery unit 1103 of the processing apparatus 1100 cools the mercury-containing gas vaporized from the object to be processed and condenses and recovers the mercury.
And a second condenser 1112 and a mercury reservoir 1113 for storing condensed mercury. In the first condenser 1111 and the second condenser 1112, the mercury-containing gas is indirectly cooled by a radiator through which a refrigerant flows. In this processing apparatus 1100, the second condenser 1
112 is configured to cool the mercury-containing gas at a lower temperature. Condensers may be provided in more stages as needed. Further, direct cooling may be performed instead of indirect cooling, or indirect cooling and direct cooling may be combined. In the case of direct cooling, for example, the cooling water and the mercury-containing gas may be brought into countercurrent contact. For example, in this processing apparatus 1100, when the pressure in the airtight container 1101 is reduced to about 10 ^-1 Torr and heated to about 120 to 140 ° C. to vaporize mercury, the first condenser has a temperature of 35 ° C. Cooling is performed using a refrigerant, and the second condenser is cooled using a 5 ° C. refrigerant. The cooling temperature of the mercury-containing gas in the condenser may be adjusted according to the pressure in the system. As described above, the condensers may be further provided in multiple stages.

The condensed mercury accumulates in the mercury reservoir 1113. The collected mercury is closed by, for example, closing the valves of the mercury reservoir 1113, the airtight container 1101 and the exhaust system 1102, and using a leak valve or the like.
If the inside of 13 is returned to atmospheric pressure, it can be taken out.

The first condenser 1111 and the second condenser 1112 not only condense mercury but also suppress generation of dioxin by cooling gas evaporated from the object to be treated. When the inside of the airtight container is heated to about 200 ° C. or more to vaporize mercury from the object to be treated, it is preferable to provide a gas cooling means also in order to suppress the generation of dioxin.

Further, the processing apparatus 1100 illustrated in FIG. 1 is provided with an exhaust gas processing means 1114 for processing the exhaust gas from the exhaust means 1102. This exhaust gas treatment means may be provided as needed. Processing device 110
In the case of 0, the exhaust gas treatment means 1114 is composed of an activated carbon packed tower and a multi-exhaust gas chamber, and the exhaust gas is made harmless, smokeless, and odorless before being discharged out of the system.

As described above, according to the processing apparatus of the present invention, mercury can be vaporized from an object to be processed at a lower temperature as compared with processing such as incineration and roasting.

The airtight container 1101 and the exhaust means 110
A gas neutralizing means 1115 for neutralizing gas vaporized from the object to be processed may be provided between them. As the gas neutralizing unit 1115, for example, a space between the airtight container 1101 and the exhaust unit 1102 may be filled with, for example, granular calcium hydroxide. Furthermore, this gas neutralizing means is provided with a portion filled with calcium chloride or the like,
The water content in the gas may be reduced.

FIG. 4 shows a processing apparatus 1100 illustrated in FIG.
FIG. 3 is a view schematically showing a configuration provided with a gas neutralizing means.
A gas neutralization unit 111 filled with calcium chloride between an airtight container 1101 and a first condenser 1111;
5b is provided. The gas neutralizing means may be provided at a plurality of locations, or may be provided at a plurality of stages.

Further, the temperature of the gas neutralizing unit 1115b may be adjusted to perform the treatment while keeping the mercury contained in the gas in a vaporized state. By performing gas neutralization or the like while maintaining the vaporized state of mercury, mercury does not condense in the gas neutralization unit 1115b, so that replacement of the gas neutralization unit 1115b becomes easy. Such a temperature adjustment may be performed as needed. For example, the airtight container 1101 or the gas neutralization unit 1115 may be used.
The temperature and pressure in b may be detected, and the temperature of the gas neutralizing means may be adjusted so that the temperature becomes higher than the boiling point of mercury at the pressure.

By providing such a gas neutralizing means 1115, for example, N
Even when Ox, SOx or halogen is contained, the concentration can be reduced. Removal of such components facilitates post-treatment of condensed mercury and facilitates treatment of exhaust gas.
In particular, by reducing the halogen concentration, for example, PCD
The generation of dioxins such as Ds and PCDFs is suppressed. Further, it is possible to protect the vacuum pump serving as the exhaust means. This gas neutralizing means 1115 converts NOx from the gas.
It is not always necessary to completely remove components such as SOx, SOx and halogen. Exhaust gas exhausted from the exhaust means 1102 is provided with, for example, an activated carbon adsorption tower or a multi-exhaust gas chamber at the subsequent stage of the exhaust means 1102 as described above,
Exhaust after processing to meet environmental standards.

(Embodiment 2) FIG. 5 is a diagram schematically showing another example of the configuration of the processing apparatus of the present invention.

The processing apparatus 1200 includes an airtight container 1201 for storing an object to be processed containing mercury, and an exhaust unit 1202 for exhausting the inside of the container. The evacuation means 1202 includes a liquid-ring vacuum pump 1203 and a liquid-circulating system 1204 for circulating the sealing liquid 1203b of the liquid-ring vacuum pump 1203.

As in the processing apparatus 1100 illustrated in FIG. 1, the airtight container 1201 includes temperature control means 1205 (not shown) for controlling the temperature in the container, and pressure control means 1206 for controlling the pressure in the container. I have. As described above, the exhaust unit 1202 is also a part of the pressure adjusting unit. The temperature adjusting means 1205 includes a temperature sensor 1207 (not shown) for detecting the temperature inside the airtight container 1201 and a heater 1208 (not shown) as a heating means for heating the inside of the airtight container. The pressure adjusting means 1206 is provided with a pressure sensor 1 (not shown) for detecting the pressure in the airtight container 1201.
209 and the exhaust means 1202 described above. Further, this processing apparatus is provided with a pressurizing system 1210 for pressurizing the inside of the airtight container or returning the pressure from reduced pressure to atmospheric pressure. This pressurizing system 1210 contains N2,
It also functions as a carrier gas introduction system 1210b for introducing a noble gas such as Ar as a carrier gas and a purge gas. 1210c is a carrier gas reservoir. This carrier gas introduction system (pressurizing system) 1210b is connected to an oxygen concentration sensor 1211 for detecting the oxygen concentration in the hermetic container.
Oxygen concentration adjusting means 12 for adjusting the oxygen concentration in the airtight container
12. The processing apparatus illustrated in FIG. 1 may be provided with such an oxygen concentration adjusting means.

FIG. 6 is a diagram schematically showing the configuration of the control means 1213 provided in the processing apparatus 1200. Control means 12
13, the temperature adjusting means 1205 and the pressure adjusting means 12
06 and the oxygen concentration control means 1212 are controlled to heat the object to be treated introduced into the airtight container 1201 under reduced pressure,
Extract mercury-containing gas from the object to be treated.

For example, as described above, depending on the reduced pressure in the airtight container 1201, the temperature is higher than the temperature at which mercury vaporizes at that pressure, for example, several tens of degrees higher than the temperature at which mercury vaporizes at that pressure. What is necessary is just to control the temperature adjustment means 1205 so that it may become high temperature. Alternatively, a profile of the temperature and pressure conditions required for the processing may be set in advance, and the temperature control unit 1205, the pressure control unit 1206, or the oxygen concentration control unit 1212 may be controlled based on the profile. For example, after purging the airtight container 1201 with nitrogen gas,
While maintaining the pressure in the airtight container 1201 at approximately 760 Torr, the container is heated to about 80 to 90 ° C.
The inside of 201 may be reduced to a predetermined pressure and the object to be processed may be heated to vaporize mercury. Although the heat conductivity in the hermetic container 1201 decreases due to the decompression, the object to be treated is preheated as described above, and then the hermetic container 1201 is heated.
By reducing the pressure inside, the heating efficiency can be improved. In addition, since the oxygen concentration is adjusted, oxidation of the object to be processed due to heating is suppressed. Such a control means may be stored in a memory means of the computer or a recording medium such as a floppy disk as a program of the computer. Thus, the temperature control means 12
05, pressure adjusting means 1206, oxygen concentration adjusting means 121
2, the object to be treated introduced into the hermetic container 1201 is heated under reduced pressure, and a mercury-containing gas is extracted from the object to be treated.

The exhaust means 1202 of the processing apparatus 1200
Uses the liquid ring vacuum pump 1203 as described above, and uses water for the sealing liquid 1203b. The configuration of the exhaust means may be appropriately selected and used depending on the required degree of vacuum, the size of the apparatus, and the like. A gas ejector may be attached to the liquid ring vacuum pump, or the liquid ring vacuum pump 120 may be used.
A mechanical booster may be provided on the intake side of No. 3. In the processing apparatus 1200, a liquid-tight vacuum pump 1203 equipped with a gas ejector 1203
The pressure can be reduced to about 1 Torr.

FIG. 7 is a sectional view schematically showing an example of the structure of a liquid ring vacuum pump 1203, and FIG. 8 is a sectional view schematically showing an example of the structure of the vacuum pump from another direction. is there. A sealed liquid 1203b is held in a casing (hull) 1251 having a circular cross section, and an impeller 1254 is attached to a drive shaft 1253 (eccentric type) arranged eccentrically from the center of the casing 1251. The sealing liquid 1203b can circulate between the inside and the outside of the casing 1251. The shaft seal 1253b of the drive shaft 1253 may be a ground system or a mechanical system, but when a mercury-containing gas is processed, the mechanical system is preferably adopted. The cross-sectional shape of the casing 1251 is not limited to a circle but may be an ellipse. In this case, the drive shaft 1253 may be disposed at the center of the casing 1251 (symmetric type).

When the impeller is rotated, the casing 125
The sealing liquid in 1 forms a ring-shaped sealing layer having a substantially uniform thickness along the inner wall of the casing 1251 by centrifugal force. FIG. 6 shows a state in which the sealing liquid 1203b forms a ring-shaped sealing layer by the rotation of the impeller 1254. At this time, the volume of the hollow portion surrounded by the inner (drive shaft side) surface of the ring-shaped liquid sealing layer and the blades of the impeller 1254 increases or decreases according to a change in position due to the rotation of the impeller 1254. That is, the ring-shaped liquid sealing layer pressed against the casing plays the role of a piston, and reciprocates between the blades of the impeller. The liquid ring vacuum pump uses the fact that the volume of the hollow portion increases or decreases due to the rotation, for example, the side wall (a casing 125 perpendicular to the drive shaft).
1) and an exhaust port 1256
Through which a continuous exhaust action is obtained. Inlet 1
The exhaust port 255 and the exhaust port 1256 may be arranged inside the impeller.

As shown in FIG. 8, this liquid ring vacuum pump 1
Reference numeral 203 denotes a casing 1251 in which the intermediate cover 1257 forms a low pressure side casing 1251a and a high pressure side casing 121.
51b. That is, the low-pressure casing 1251a and the high-pressure casing 1
251b are each provided with an impeller 1254, and the suction gas is first introduced into the low-pressure side casing 1251a, and is compressed by the low-pressure side impeller 1254a. The compressed intake gas is introduced into the high-pressure side casing 1251b through the intermediate cover 1257, and the high-pressure side impeller 1254b
And further discharged to the sealing liquid circulation system 1204 together with the sealing liquid 1203b under atmospheric pressure. In the sealing liquid circulation system 1204, the sealing liquid 1203b and the suction gas are separated, and the sealing liquid 1203b is introduced into the liquid ring vacuum pump 1203 again after processing such as separation of a trapping substance, temperature control, and pH control. You. The sealing liquid 1203b is sucked into the liquid ring vacuum pump 1203 by the pressure difference between the inside of the casing 1251 and the atmospheric pressure.
A circulation pump for circulating b may be separately provided. Reference numeral 1258 denotes a sealing liquid inlet;
Is a sealing liquid outlet.

The liquid ring vacuum pump 1203 illustrated in FIG.
In, the casing is divided into two stages, but a liquid ring vacuum pump may be connected in multiple stages. By dividing such a casing into multiple stages and connecting a liquid-ring vacuum pump in multiple stages, a higher degree of vacuum can be obtained.

As the sealing liquid 1203b, not only water but also
For example, ethylene glycol, propylene glycol, monochlorobenzene, dichlorobenzene, methanol, ethanol, toluene, xylene, kerosene, acrylonitrile, hexane, ethylbenzene, styrene and the like may be used. Furthermore, when the gas to be exhausted is an acidic gas, an alkaline solution may be used for sealing the liquid ring vacuum pump.

The liquid ring vacuum pump 1203 is provided with a gas ejector using air at atmospheric pressure as a driving fluid, if necessary.
It may be provided in stages or in multiple stages. By providing such a gas ejector, a higher degree of vacuum can be obtained, and the power required for driving the liquid ring vacuum pump can be reduced. Further, a mechanical booster (Roots pump) may be provided on the suction side of the liquid ring vacuum pump. By connecting a mechanical booster to the suction side of the liquid ring vacuum pump, a higher pumping speed can be obtained, and a higher degree of vacuum can be obtained.

The treatment apparatus of the present invention is provided with the above-mentioned liquid ring vacuum pump, so that gas containing water, mercury, and decomposition products of resin can be effectively vaporized under reduced pressure. it can. By using a liquid ring vacuum pump, gas or mist containing moisture, mercury, decomposition products of resin, etc. can be effectively handled, and moisture, mercury, and resin contained in exhaust gas can be decomposed. Products and the like can be captured. Therefore, from the sealing liquid,
These substances can be recovered, and the escape of harmful substances to the outside of the system can be prevented. Seal liquid circulation system 12
Numeral 04 denotes a liquid for circulating the sealing liquid 1203b of the liquid ring vacuum pump 1203 inside and outside the casing of the liquid ring vacuum pump 1203.

In the processing apparatus illustrated in FIG. 5, the sealing liquid circulation system 1204 includes a sealing liquid cooling unit 121 for cooling the sealing liquid.
5, a gas-liquid separator 1216 for separating the exhaust gas discharged from the liquid ring vacuum pump together with the sealing liquid from the sealing liquid, and a mercury collecting means 1217 for separating and collecting mercury from the sealing liquid. Although a liquid cyclone is used here as the mercury recovery means 1217, a mercury sedimentation tank may be provided in the sealing liquid circulation system.

The sealing liquid cooling means 1215 cools the sealing liquid 1203b discharged from the liquid ring vacuum pump 1203, and the sealing liquid circulating system 1204 cools the water as the sealing liquid 1203b to 2 ° C. The sealing liquid 1203b is a liquid sealing vacuum pump 12
03 from the viewpoint of improving the pumping speed of the sealing liquid 1203b.
It is preferable to cool the sealing liquid from the viewpoint of capturing the mercury in the sealing liquid and also from the viewpoint of holding the mercury captured in the sealing liquid 1203b in the sealing liquid. If the sealing liquid 1203b does not freeze, it may be cooled to a lower temperature.
By cooling the sealing liquid 1203b, trapping efficiency of mercury and other components is improved. Further, a higher degree of vacuum can be obtained by keeping the vapor pressure of the sealing liquid low.

The exhaust gas separated from the sealed liquid by the gas-liquid separation means 1216 is treated by the exhaust gas treatment means 1218 and then discharged out of the system. The exhaust gas treatment means 1218 may be provided as needed, but may be made harmless, smokeless, and odorless by, for example, an activated carbon packed tower, a multi-exhaust gas chamber, or the like, and discharged out of the system.

The configuration of the liquid sealing circulation system 1204 may be changed as needed. For example, a pH adjusting means for adjusting the pH of the sealing liquid, a flow rate adjusting means for adjusting the flow rate of the sealing liquid, a circulation pump for circulating the sealing liquid, and the like may be provided. Further, these may be provided at a plurality of locations or may be provided at a plurality of stages. The arrangement order may be changed as necessary.

FIG. 9 is a liquid circulation system 1204 exemplified in FIG.
PH adjusting means 121 for adjusting the pH of the sealing solution
9. A processing apparatus 120 including a sealing liquid circulation system 1204b further including a sealing liquid reservoir 1220 for adjusting the flow rate of the sealing liquid.
It is a figure which shows the structure of 0b typically.

The pH adjusting means 1219 detects the pH of the sealing liquid by a pH detecting means such as a pH meter. For example, when the sealing liquid is acidic, an alkali of the sealing liquid is added to adjust the pH of the sealing liquid.
Is kept within a predetermined range. This pH adjusting means 12
In No. 19, the pH of the sealing liquid is maintained at about 5 to 8 or so. By providing such a pH adjusting means 1219 for the sealed liquid, for example, NOx,
Even when SOx or halogen is contained, the pH of the sealing liquid can be kept within a predetermined range.
Removal of such components facilitates post-treatment of condensed mercury and facilitates treatment of exhaust gas.

The sealing liquid 120 circulating through the sealing liquid circulation system 1204
Although 3b has a certain mercury concentration, this sealing liquid 1203b does not need to be particularly treated when used in a closed system. When the sealing liquid needs to be treated, for example, it may be treated with a chelating agent, or may be treated using a ferrite method, a reduction vaporization method, or the like. Further, low concentration mercury may be treated using a mixed solution of potassium permanganate and sulfuric acid.

Further, a ferrite method, a reduction vaporization method, or the like may be combined with the sealing liquid circulation system. FIG. 10 is a view schematically showing another example of the configuration of the liquid sealing circulation system of the processing apparatus of the invention illustrated in FIGS. 5 and 9. This sealing liquid circulation system has the structure of the sealing liquid circulation system 1204b illustrated in FIG.
Furthermore, ferrite treatment tank, reduction vaporization tank, condenser,
It has a configuration including a washing cooling tower and a mercury absorption tower.

The liquid sealing reservoir 12 of the liquid sealing circulation system 1204b
First, the sealing liquid 1203b containing 20 mercury is introduced into a ferrite treatment tank 1231, and is subjected to ferrite treatment to collect crude mercury. The treatment liquid subjected to the ferrite treatment is introduced into the reduction vaporization tank 1232. In the reduction vaporization tank 1232, a reducing agent is caused to act on the treatment liquid, and mercury and its compounds are vaporized by passing air or nitrogen gas. At this time, the vaporized gas is about 50 to 60 ° C. Further, the pH of the above-mentioned processing solution is on the alkaline side. The mercury-containing gas vaporized in the reduction vaporization tank 1232 is supplied to the condenser 12
33. At this time, the gas separated from the sealing liquid by the gas-liquid separation means 1216 of the sealing liquid circulation system 1204 illustrated in FIG. 9 is also introduced into the condenser 1233. This gas, that is, the gas vaporized in the reduction vaporization tank 1232 and the gas separated from the sealed liquid by the gas-liquid separation means 1216 are indirectly cooled by a condenser 1233 with cooling water at about 25 ° C. The condenser 1233 may include a venturi scrubber. Mercury and water condensed by cooling are introduced into a first mercury settling tank 1234. In the first mercury settling tank maintained at about 2 to 5 ° C., the mercury settles as fine gray-black particles, which gradually grow into mercury particles having a diameter of about 1 to 3 mm. The sedimented mercury is further separated into a first separation tank 1 equipped with a hydrocyclone.
At 235, it is separated from mercury. The water separated from mercury in the first separation tank 1235 and the overflow water (mercury concentration of about 50 to 100 ppb) in the first mercury precipitation tank 1234 are:
The liquid is returned to the liquid sealing reservoir 1220 of the liquid sealing circulation system 1204b.

On the other hand, the gas that has passed through the condenser 1233 is introduced into the washing cooling tower 1236. The washing cooling tower 1236 has a diameter of about 300 mm and is filled with 1-inch Raschig rings 1 m. Cooling water cooled to about 2 ° C. is supplied from the top of the tower, and the condenser 1233
Gas in a countercurrent direction with the gas discharged from
Cool directly to a degree. The washing cooling tower 1236 may also be provided with a venturi scrubber.

Mercury and water condensed by cooling are introduced into a second mercury settling tank 1237. This washing cooling tower 123
6 not only cools the gas, but also
Mercury fine particles not collected in 33 can also be collected.

Second mercury sedimentation tank 1 maintained at about 0 to 2 ° C.
At 237, the mercury settles as fine gray black particles.
The sedimented mercury is further separated from the mercury in a second separation tank 1238 provided with a hydrocyclone. Second separation tank 12
Water separated from mercury at 38 and second mercury settling tank 12
37 overflow water (mercury concentration about 50-100pp)
b) is used as feed water for the washing cooling tower 1236. This water is supplied to the sealing reservoir 12 of the sealing circulation system 1204b.
20, you may make it return to the ferrite processing tank 1231.

Washing cooling tower 1236, second mercury settling tank 1
By the treatment up to 237 and the second separation tank 1238, mercury in the sealing liquid introduced from the sealing liquid reservoir 1220 can be almost completely recovered (98 to 99%).

The low-concentration mercury-containing gas that has passed through the washing cooling tower 1236 can be treated by various methods. In the example shown in FIG. 10, the low-concentration mercury-containing gas that has passed through the washing cooling tower 1236 is introduced into the mercury absorption tower 1239. In this mercury absorption tower 1239, a mixed solution of potassium permanganate and sulfuric acid is introduced from the top as an absorption liquid,
Mercury is absorbed by bringing the gas discharged from the washing cooling tower 1236 into countercurrent contact. 1240 is an absorption liquid reservoir. If this absorbing liquid has lost the mercury absorbing ability, it may be introduced into the ferrite treatment tank 1231 little by little.

The gas exiting the mercury absorption tower 1239 has a mercury concentration of about 0.02 to 0.03% and can be discharged into the atmosphere. In the example illustrated in FIG. 10, the mercury absorption tower 1239
The gas that has exited is further treated in an activated carbon adsorption tower 1241 and then released into the atmosphere.

The same processing as the liquid sealing circulation system illustrated in FIG. 10 may be combined with, for example, the processing apparatus 1100 of the present invention illustrated in FIG. For example, the processing device 110
0 The exhaust gas from the exhaust means 1102 is supplied to the condenser 123
3 may be introduced.

Further, in the processing apparatus 1200 of the present invention having a liquid-ring vacuum pump as exemplified in FIGS. 5 and 9, the airtight container 1201 and the exhaust means provided with the liquid-ring vacuum pump 1203 are also connected. Further, a gas neutralizing means for neutralizing the gas vaporized from the object to be processed may be provided.
As described above, as the gas neutralizing means, for example, a space between the airtight container 1201 and the exhaust means 1203 may be filled with, for example, granular calcium hydroxide. Furthermore, a portion filled with calcium chloride or the like may be provided in the gas neutralizing means to reduce the water content in the gas.

FIG. 11 shows the processing unit 120 illustrated in FIG.
It is a figure which shows typically the structure provided with the gas neutralization means in 0b. A gas neutralization unit 1251 filled with calcium chloride is arranged in parallel between an airtight container 1201 and an evacuation unit 1203 equipped with a liquid ring vacuum pump. The gas neutralizing means may be provided at a plurality of locations, or may be provided at a plurality of stages. In the example of FIG. 11, since the gas neutralization units 1251 are arranged in parallel, they can be used by switching during processing, and can be replaced during processing.

Further, the temperature of the gas neutralizing unit 1251 may be adjusted to perform the treatment while keeping the mercury contained in the gas in a vaporized state. By performing gas neutralization or the like while maintaining the vaporized state of mercury, mercury does not condense in the gas neutralization unit 1251, so that replacement of the gas neutralization unit 1251 becomes easy.

Such temperature adjustment may be performed as needed. For example, the temperature and pressure in the hermetic container 1201 or the gas neutralization unit 1251 are detected, and the temperature is adjusted to the level of mercury at the pressure. The temperature of the gas neutralizing means may be adjusted so as to be higher than the boiling point.

By providing such a gas neutralizing means 1251, for example, N
Even when Ox, SOx or halogen is contained, the concentration can be reduced. Removal of such components facilitates post-treatment of condensed mercury and facilitates treatment of exhaust gas.
In particular, by reducing the halogen concentration, for example, PCD
The generation of dioxins such as Ds and PCDFs is suppressed. Further, the vacuum pump serving as the exhaust means can be protected, and the treatment of the sealing liquid 1203b in the sealing liquid circulation system 1204 becomes easy.

The gas neutralizing means 1251 converts NO into NO.
It is not necessary to completely remove components such as x, SOx and halogen. Exhaust gas exhausted together with the sealing liquid from the exhaust means 1203 satisfies environmental standards in, for example, a condenser 1233, a washing cooling tower 1236, a mercury absorption tower 1239, an activated carbon adsorption tower 1241 and a multi-exhaust gas chamber as illustrated in FIG. And then exhausted.

Also, in the processing apparatus 1200 of the present invention having a liquid ring type vacuum pump as illustrated in FIGS. 5 and 9, similarly to the processing apparatus 1100 illustrated in FIG. Evacuation means 1203 equipped with a pump
In between, cooling means for cooling the gas vaporized from the processing object or cooling the gas vaporized from the processing object,
A collecting means for collecting mercury condensed by cooling may be provided.

FIG. 12 shows a processing apparatus of the present invention having a gas cooling means 1261 for cooling a gas vaporized from an object to be processed between an airtight container 1201 and an exhaust means 1203 provided with a liquid ring vacuum pump. It is a figure which shows an example of a structure typically. The gas cooling means 1261 is a mercury reservoir 126 which is a collecting means for collecting mercury condensed by cooling.
2 is provided. Further, for example, the collection unit 1103 illustrated in FIG. 4, that is, the first condenser 1111 and the second condenser 1111
May be provided as a gas cooling means.

The gas cooling means 1261 may be configured to indirectly cool, for example, a mercury-containing gas vaporized from an object to be treated by a radiator through which a refrigerant flows. The cooling means 1261 may be provided in more stages as needed. Further, direct cooling may be performed instead of indirect cooling, or indirect cooling and direct cooling may be combined. In the case of direct cooling, for example, the cooling water and the mercury-containing gas may be brought into countercurrent contact. The condensed mercury and water may be treated by a method as illustrated in FIG.

The cooling temperature of the mercury-containing gas in the cooling means 1261 may be adjusted according to the pressure in the system. As described above, if the condenser is further provided in multiple stages, the condenser can be cooled to a lower temperature.

The condensed mercury accumulates in the mercury reservoir 1262. The collected mercury is closed by, for example, closing the valves of the mercury reservoir 1262, the airtight container 1201 and the exhaust system 1203, and using a leak valve or the like.
If the inside of 62 is returned to atmospheric pressure, it can be taken out.

The gas cooling means 1261 not only condenses mercury but also suppresses the generation of dioxin by cooling the gas vaporized from the object to be treated. When the inside of the airtight container is heated to about 200 ° C. or more to vaporize mercury from the object to be treated, it is preferable to provide a gas cooling means also in order to suppress the generation of dioxin. In the gas cooling unit illustrated in FIG. 12, for example, the gas of 250 ° C. discharged from the airtight container 1201 is
It is designed to cool down to around 100 ° C. within a few seconds. Further, the gas cooling means may be further connected in multiple stages to rapidly cool to, for example, about 25 to 35 ° C.

As described above, according to the present invention, an object to be treated containing mercury is introduced into an airtight container, and the mercury-containing gas extracted by heating under reduced pressure is extracted by a liquid ring vacuum pump having a liquid sealing circulation system. , Mercury can be captured and collected by the sealing liquid of a liquid ring vacuum pump. In addition, mercury-containing objects to be treated are introduced into an airtight container, heated under reduced pressure, and the extracted mercury-containing gas is cooled, so that mercury can be condensed and recovered.

Further, according to the treatment apparatus of the present invention, mercury-containing objects can be effectively treated at a relatively low temperature to separate and collect mercury.

The present invention is also intended to effectively treat an object containing mercury and to suppress the generation of harmful substances such as dioxin to minimize the discharge of harmful substances into the environment while reusing mercury. Can be.

(Embodiment 3) In the present invention, not only mercury is separated and recovered from the object to be treated, but also constituent metals other than mercury (second metal) of the object to be treated can be recovered from the object to be treated. Things.

In the processing apparatus of the present invention for processing mercury and metals other than mercury, the processing apparatus can be switched to a first exhaust system equipped with a liquid ring vacuum pump, or connected to an airtight container in parallel. There is provided a second exhaust system, and third recovery means disposed between the airtight container and the second exhaust system. Further, a second control means is provided for controlling the temperature and pressure in the airtight container so that the second metal is vaporized under reduced pressure.

That is, after mercury is vaporized from the object to be treated by the method described above, the temperature and pressure in the hermetic container are adjusted so that the second metal is vaporized under reduced pressure, and the mercury is removed from the object to be treated. The second metal is vaporized. By adjusting the temperature and pressure conditions in the hermetic container, the second metal can be selectively vaporized from the object to be treated. Here, the second metal is not limited to one element, and may be plural. When treating the second metal of a plurality of elements, the second exhaust system may be provided with a plurality of systems. The same applies to the third collecting means. In this case, for example, a plurality of levels of control may be performed so that the second control means can process a plurality of second metals.

For example, the boiling point of Zn at 760 Torr is about 907 ° C., but at 100 Torr, it is about 736 ° C.
About 593 ° C at 10 Torr and about 4 at 1 Torr
At 70 ° C. and 10 ⁻⁴ Torr, it evaporates at about 260 ° C. For example, the boiling point of Pb at 760 Torr is about 17
It is 44 ° C, but at 100 Torr, it is about 1421 ° C, 1
At ⁰ Torr, about 1162 ° C., and at 10 ⁻¹ Torr, about 8
At 27 ° C. and 10 ⁻³ Torr, it evaporates at about 627 ° C. Further, for example, the boiling point of Li at 760 Torr is about 1
372 ° C, but at 100 Torr, about 1097 ° C,
Approximately 881 ° C. at 10 Torr and approximately 720 at 1 Torr
It vaporizes at about 450 ° C. at 10 ° C. at 10 ^-3 Torr. Such a relationship between the vapor pressure and the temperature may be calculated using, for example, the Antoine equation or the Harlacher-Braun equation. Further, it may be obtained from various data sources.

By controlling the temperature and pressure conditions in the hermetic container according to the constituent metals of the object to be processed, the second metal is vaporized according to the controlled temperature and pressure conditions. Since the pressure in the airtight container is reduced, the second metal evaporates at a temperature lower than that under normal pressure, like the first metal. Further, by reducing the pressure in the hermetic container, the oxygen concentration also decreases, and the inside of the hermetic container becomes a non-oxidizing atmosphere. Therefore, oxidation of the vaporized second metal can be prevented and the second metal can be recovered in a metal state.

The exhaust means provided in the second exhaust system includes:
For example, various vacuum pumps such as a rotary pump, an oil diffusion pump, and a booster pump may be used. In the present invention, since the gas containing moisture, mercury, and a decomposition product of a resin is exhausted in advance by the first exhaust system, the second exhaust system has a higher exhaust capacity than the first exhaust system. High evacuation means can be used and higher degrees of vacuum can be reached. Therefore, a metal having a higher boiling point can be vaporized from the object to be treated. The second gaseous vaporized from the object to be treated in the airtight container decompressed in this way.
The metal may be recovered by third recovery means disposed between the airtight container and the second exhaust system. As the third recovery means, for example, a recovery chamber having an exhaust system may be connected to an airtight container, and the vaporized metal may be cooled to a melting point or lower and condensed and recovered in the chamber. The inside of the recovery chamber may have, for example, a countercurrent structure or a spiral structure. Alternatively, a valve or an openable / closable partition may be provided between the collection chamber and the airtight container, and between the collection chamber and the exhaust system. That is, when metal vaporized from the object to be treated is introduced into the collection chamber,
The collection chamber may be closed and cooled to condense and collect the metal.

Regardless of whether the vaporized metal is continuously condensed and recovered, or the case where the vaporized metal is condensed and recovered in a batch process, the collection efficiency is increased if the residence time of the vaporized metal in the recovery chamber is long.

Further, N ₂ or a rare gas may be introduced into the hermetic container as a carrier gas. The vaporized metal is efficiently introduced into the collection chamber by the carrier gas. As described above, the third collection means may include a plurality of systems. The same metal may be recovered by a plurality of third recovery means, or the temperature and pressure in the hermetic container are adjusted stepwise to selectively vaporize the plurality of metals, respectively. The collection means may be switched to another collection means. The third collecting means may be connected in multiple stages.

With such a configuration, the processing apparatus of the present invention can process an object having the first metal which is mercury and the second metal other than mercury. In the processing apparatus of the present invention, water, mercury, and a decomposition product gas of the resin generated from the object to be processed can be recovered by the first recovery means or the second recovery means connected to the airtight container. Therefore, sufficient pressure reduction and heating can be performed in the airtight container so that the second metal is vaporized, and the second metal can be recovered by the third recovery means. In the airtight container,
Since the resin is decomposed under the condition that the metal of the object to be treated is not oxidized or vaporized, the metal is separated and recovered from the object to be treated in a metal state. (Embodiment 4) FIG. 13 is a diagram schematically showing an example of the configuration of the processing apparatus of the present invention. In addition to separating and collecting mercury from the object to be treated, constituent metals (second metal) other than mercury of the object to be treated can also be collected from the object to be treated.

The processing apparatus 1300 has the first mercury
Liquid-sealed vacuum pump having a liquid-tight circulating system 1303 as a first exhaust system 1302 for evacuating the inside of a hermetically sealed container 1301 containing an object to be processed containing the second metal other than the mercury and the second metal 1302a is connected. Between the airtight container 1301 and the liquid ring vacuum pump 1302,
A condenser 1304 is provided as a means for cooling gas vaporized from the object to be treated and a first means for recovering mercury. The sealing liquid circulation system is the sealing liquid circulation system 1 illustrated in FIG.
It has the same configuration as 204b, and includes a plurality of second recovery means for recovering mercury from the sealing liquid. Further, between the airtight container 1301 and the liquid ring vacuum pump 1302,
A gas neutralizing unit 1305 is provided, which is a means for neutralizing gas vaporized from an object to be processed.

Further, a second exhaust system 1311 having a second exhaust means 1311a is connected to the airtight container 1301 so as to be switchable with the first exhaust system.
A recovery chamber 1312, which is a third recovery means for condensing and recovering the second metal, is provided between the first exhaust means 13 and the second exhaust means 1311. Between the recovery chamber 1312 and the second exhaust means 1311, there is also provided a gas cooling tower 13 which is a cooling means for cooling gas evaporated from the object to be treated.
13 are provided.

Further, to the airtight container 1301, a carrier gas introduction system 1308 which is also used as a pressurizing system in the airtight container and oxygen concentration adjusting means is connected.

The airtight container 1301 is provided with a temperature adjusting means 1314 (not shown) for adjusting the temperature in the airtight container 1301 and a pressure adjusting means 1315 for adjusting the pressure in the container, similarly to the processing apparatus of the present invention described above. I have. The first exhaust system 1302, the second exhaust system 1311 and the carrier gas introduction system 1306 are also a part of the pressure adjusting means. The temperature adjusting means 1314 includes a temperature sensor 1316 (not shown) for detecting the temperature inside the airtight container 1301 and a heater 1317 (not shown) which is a heating means for heating the inside of the airtight container. The pressure adjusting means 1315 is provided with a pressure sensor 13 (not shown) for detecting the pressure in the airtight container 1301.
18 having the first exhaust means 1302a described above.
, And a second exhaust system 1311 having a second exhaust unit 1311a. Further, in the processing apparatus 1300, a pressurizing system for pressurizing the inside of the airtight container 1301 or returning the pressure from the reduced pressure to the atmospheric pressure is used.
6b. The pressurizing system 1306b is also used as a carrier gas introducing system 1306 for introducing a noble gas such as N2 or Ar into the hermetic container as a carrier gas and a purge gas. This carrier gas introduction system (pressurization system) 1306 is an oxygen concentration sensor 1319 for detecting the oxygen concentration in the hermetic container.
Thus, oxygen concentration adjusting means 1320 for adjusting the oxygen concentration in the airtight container is constituted. The oxygen concentration adjusting means may be provided as needed. By adjusting the oxygen concentration in the airtight container 1310, the degree of freedom of processing can be increased. For example, when the object to be treated contains a relatively large amount of an organic component such as a resin, the organic component may be thermally decomposed after controlling the oxygen concentration in the hermetic container 1301. The gas vaporized by the thermal decomposition from the object to be treated is connected to a further exhaust system to the hermetic container 1301 and an oiling device is disposed between the exhaust system and the exhaust system to collect the thermally decomposed gas of the resin. do it.

FIG. 14 is a diagram schematically showing the configuration of the control means 1330 provided in the processing apparatus 1300. Control means 1
330, the temperature adjusting means 1314 and the pressure adjusting means 1
The object to be treated introduced into the hermetic container 1301 is heated under reduced pressure by controlling 315 and the oxygen concentration adjusting means 1320 to extract a mercury-containing gas from the object to be treated.

For example, as described above, according to the reduced pressure in the airtight container 1301, the temperature is higher than the temperature at which mercury vaporizes at that pressure, for example, several tens of degrees higher than the temperature at which mercury vaporizes at that pressure. What is necessary is just to control the temperature adjustment means 1314 so that it may become high temperature. Alternatively, a profile of temperature and pressure conditions required for the processing may be set in advance, and the temperature control unit 1314, the pressure control unit 1315, or the oxygen concentration control unit 1320 may be controlled based on the profile. For example, after purging the airtight container 1301 with nitrogen gas,
While maintaining the pressure in the hermetic container 1301 at approximately 760 Torr, it is heated to about 80 to 90 ° C.
The inside of 301 may be reduced to a predetermined pressure and the object to be processed may be heated to vaporize mercury. Although the heat conductivity in the hermetic container 1301 decreases due to the reduced pressure, the object to be treated is preheated in this manner, and
By reducing the pressure inside, the heating efficiency can be improved. In addition, since the oxygen concentration is adjusted, oxidation of the object to be processed due to heating is suppressed. Such a control means may be stored in a memory means of the computer or a recording medium such as a floppy disk as a program of the computer. Thus, the temperature adjusting means 13
14, pressure adjusting means 1315, oxygen concentration adjusting means 132
At 0, the object to be treated introduced into the hermetic container 1301 is heated under reduced pressure to extract a mercury-containing gas from the object to be treated.

First exhaust system 13 of processing apparatus 1300
02 uses the liquid ring vacuum pump 1302a as described above, and uses water for the sealing liquid. When the object to be treated contains an organic component, water and oil may be separated by a liquid sealing circulation system, or an organic sealing liquid may be used. Also, as described above, the airtight container 130
An oiling device may be connected to 1.

The structure of the exhaust means may be appropriately selected and used in accordance with the required degree of vacuum, the size of the apparatus, etc., and a gas ejector may be attached to the liquid ring vacuum pump, or the liquid ring vacuum pump may be used. A mechanical booster may be provided on the intake side of 1302a. Processing device 130
0: Liquid ring vacuum pump 1 with gas ejector
The pressure inside the airtight container 1301 can be reduced to about 1 Torr by the 302a. The second evacuation system 1311 of the processing apparatus 1300 uses a booster pump and a rotary pump as the evacuation means 1311a, and is 5 × 10 ⁻⁴ Torr.
The pressure inside the airtight container can be reduced to about r.

If the object to be treated containing the first metal as mercury and the second metal other than mercury as components is introduced into the processing apparatus 1300 of the present invention,
The pressure inside the airtight container is reduced and the object to be treated is heated to extract the mercury-containing gas. The gas extracted from the object to be processed is, for example, as described in the first or second embodiment,
It is introduced into the first exhaust system 1302 and is collected by the first collecting means and the second collecting means.

If mercury has been removed from the object to be treated,
The control unit 1330 controls the second exhaust system 1302 to
And the interior of the airtight container 1301 is further evacuated. Further, the airtight container 1301 is controlled by the control means.
The temperature of the inside of the airtight container 1301 is adjusted to be equal to or higher than the vaporization temperature of the second metal according to the internal pressure to vaporize the second metal from the object to be processed.

The second metal vaporized from the object to be processed is introduced into the second exhaust system 1311 and is collected by the recovery chamber 131.
Condensed and recovered in 2. In the processing apparatus 1300, a cyclone type recovery chamber 1312 is used. The recovery chamber 1312 may have a countercurrent structure.

Recovery chamber 1 after condensing the second metal
The gas discharged from 312 is introduced into a gas cooling tower 1313 and rapidly cooled to about 35 ° C. by multiple stages of indirect cooling. By cooling the exhaust gas in this way, the generation of dioxins such as PCDDs and PCDFs can be greatly suppressed. By further cooling the gas, the second metal and other components that have passed through the collection chamber 1312 can be collected.

The gas exhausted from the gas cooling tower is exhausted by the second exhaust means 1311. This exhaust gas may be treated in an activated carbon adsorption tower, a multi-exhaust gas chamber or the like as described above, and then released into the atmosphere.

(Embodiment 5) FIG. 15 is a top view schematically showing an example of the structure of the processing apparatus of the present invention.

This processing apparatus 1500 is for processing an object to be processed having mercury as a first metal and a second metal other than mercury as a constituent material. In this processing apparatus 1500, the plurality of second metals can be selectively vaporized and recovered.

An airtight container 1501 having an airtight lid 1501a which can be opened and closed has a first exhaust system 1502 and a plurality of second airtight systems.
Exhaust systems 1503a, 1503b and 1503c are switchably connected. The gas neutralization unit 1504 is provided between the airtight container 1501 and the first exhaust system 1502 and is filled with calcium hydroxide for neutralizing mercury-containing gas vaporized from the object to be treated. Subsequent to this, a condenser (not shown), a liquid-ring vacuum pump, and a liquid-circulation system are provided in the same manner as the configuration illustrated in FIG.

On the other hand, the second exhaust system 1503a includes an oil diffusion pump 1505, a mechanical booster 1506, a rotary pump 1507, and a holding pump 1508 as exhaust means. A collection chamber 1509a is provided between the airtight container 1501 and the oil diffusion pump 1505 to condense and collect the second metal vaporized from the object to be treated. Second exhaust system 1
503b and 1503c have the same configuration.

[0214] Further, to the airtight container 1501, a carrier gas introduction system 1510 which is also used as a pressurizing system and an oxygen concentration adjusting means in the airtight container is connected. The carrier gas such as N ₂ and Ar held in the carrier gas reservoir 1511 is introduced into the hermetic container 1301 through the carrier gas introduction valve 1512 under the control of a control unit (not shown). The airtight container 1501 is provided with a temperature adjusting means 1513 (not shown) for adjusting the temperature in the airtight container 1501 and a pressure adjusting means 1514 for adjusting the pressure in the container, similarly to the processing apparatus of the present invention described above. First exhaust system 150
2, second exhaust system 1503 and carrier gas introduction system 1
510 is also a part of the pressure adjusting means. Temperature control means 15
Reference numeral 13 includes a temperature sensor 1515 (not shown) for detecting the temperature inside the airtight container 1501 and a heater 1516 (not shown) as a heating means for heating the inside of the airtight container. Further, the pressure adjusting means 1514 is provided in the airtight container 1501.
A pressure sensor 1517 (not shown) for detecting the internal pressure;
First exhaust system 1502, second exhaust system 1503a, 15
03b and 1503c, and a carrier gas introduction system 1510 which is also a pressurization system for pressurizing the inside of the airtight container 1501 or returning the pressure from reduced pressure to atmospheric pressure. This carrier gas introduction system (pressurizing system) 1510 is
An oxygen concentration sensor 1518 for detecting the oxygen concentration in the container 1 constitutes an oxygen concentration adjusting means 1519 for adjusting the oxygen concentration in the airtight container 1501. The oxygen concentration adjusting means 1519 may be provided as needed. By adjusting the oxygen concentration in the airtight container 1510, the degree of freedom of processing can be increased. For example, when the object to be treated contains a relatively large amount of an organic component such as a resin, the organic component may be thermally decomposed after controlling the oxygen concentration in the hermetic container 1501. The gas vaporized by thermal decomposition from the object to be processed is connected to another exhaust system to the hermetic container 1501 and an oiling device is disposed between the exhaust system and the exhaust system to collect the thermally decomposed gas of the resin. do it.

FIG. 16 is a diagram schematically showing the configuration of the control means 1520 provided in the processing device 1500.

The temperature control means 1 is controlled by the control means 1520.
513, pressure adjusting means 1514, oxygen concentration adjusting means 15
19, the object to be treated introduced into the hermetic container 1501 is heated under reduced pressure to extract a mercury-containing gas from the object to be treated.

For example, in order to extract a mercury-containing gas, according to the pressure in the hermetic container 1501 reduced as described above, a temperature higher than the temperature at which mercury vaporizes at that pressure, for example, mercury at that pressure Temperature adjusting means 151 so that the temperature becomes several tens degrees higher than the temperature at which
3 may be controlled. In addition, a profile of the temperature and pressure conditions required for the processing is set in advance, and the temperature adjusting means 1513,
Pressure adjusting means 1514 or oxygen concentration adjusting means 151
9 may be controlled. In order to vaporize the second metal, the first exhaust system 15
02 to the second exhaust system 1503 to switch the airtight container 1
The inside of 501 is further evacuated. Further, the temperature of the inside of the airtight container 1501 is adjusted to be equal to or higher than the vaporization temperature of the second metal according to the pressure in the airtight container 1501 by the control means 1520, and the second metal is vaporized from the object to be processed.

That is, after mercury is vaporized from the object to be treated, the temperature and pressure in the hermetic container 1501 are adjusted so that the second metal is vaporized under reduced pressure, and the second metal is evaporated from the object to be treated. Vaporize. The temperature in the airtight container 1501,
By adjusting the pressure condition, the second
Can be selectively vaporized. Here, the second metal is not limited to one element, and may be plural. The processing apparatus 1500 of the present invention includes a plurality of second exhaust systems 150 for processing a plurality of second elements.
3 is provided. Collection chamber 1 as third collection means
The same applies to 509.

[0219] The second metal vaporized from the object to be treated is introduced into the second exhaust system 1503a.
Condensed and recovered in 09a. In the processing apparatus 1500, the recovery chamber 1509 uses a cyclone type. The recovery chamber 1509 may have a countercurrent structure.

FIGS. 17 and 18 show the relationship between the vapor pressure of various metals and the pressure.

For example, the boiling point of Zn at 760 Torr is about 907 ° C., but at 100 Torr, the boiling point is about 736 ° C.
About 593 ° C at 10 Torr and about 4 at 1 Torr
At 70 ° C. and 10 ⁻⁴ Torr, it evaporates at about 260 ° C. For example, the boiling point of Pb at 760 Torr is about 17
It is 44 ° C, but at 100 Torr, it is about 1421 ° C, 1
At ⁰ Torr, about 1162 ° C., and at 10 ⁻¹ Torr, about 8
At 27 ° C. and 10 ⁻³ Torr, it evaporates at about 627 ° C. Further, for example, the boiling point of Li at 760 Torr is about 1
372 ° C, but at 100 Torr, about 1097 ° C,
Approximately 881 ° C. at 10 Torr and approximately 720 at 1 Torr
It vaporizes at about 450 ° C. at 10 ° C. at 10 ^-3 Torr. Therefore, for example, when a dry battery is used as the object to be treated, Hg,
Cd, Zn, Li and the like can be separated and recovered from the object to be treated.

The relationship between the vapor pressure and the temperature can be determined, for example, by using the formula of Antoine or Harlacher-Blau.
You may make it calculate using the formula of n, etc. Also,
It may be obtained from various data sources.

As described above, by adjusting the temperature and pressure conditions in the hermetic container 1501 according to the constituent metal of the object to be processed by the control means, the second metal is vaporized according to the controlled temperature and pressure conditions.

Since the pressure in the airtight container 1501 is reduced, the second metal evaporates at a lower temperature than normal pressure, like the first metal. Further, by reducing the pressure in the hermetic container 1501, the oxygen concentration also decreases, and the inside of the hermetic container 1501 becomes a non-oxidizing atmosphere. Therefore, oxidation of the vaporized second metal can be prevented and the second metal can be recovered in a metal state.

In the processing apparatus 1500 of the present invention, water, mercury,
Because the gas containing the decomposition products of the resin is exhausted,
In the second exhaust system 1503, an exhaust unit having a higher exhaust capability than the first exhaust system 1502 can be used, and a higher degree of vacuum can be achieved. Therefore, a metal having a higher boiling point can be vaporized from the object to be treated.

[0226] The second metal vaporized from the object to be treated in the hermetically sealed container 1501 thus depressurized is the third metal disposed between the hermetic container 1501 and the second exhaust system 1503.
The collection may be performed by the collection chamber 1509, which is a collection unit. In the recovery chamber 1509, the second metal vaporized from the object to be processed is cooled to a temperature lower than its melting point, condensed and recovered. The inside of the recovery chamber 1509 may have a countercurrent structure or a spiral structure. Alternatively, a valve or an openable / closable partition may be provided between the collection chamber 1509 and the airtight container 1501, and between the collection chamber 1509 and the oil diffusion pump 1505. That is, when metal vaporized from the object to be processed is introduced into the collection chamber 1509, the collection chamber 1509 is closed and cooled,
The metal may be condensed and collected. The collection chambers 1509 may be provided in multiple stages. Regardless of whether the vaporized metal is continuously condensed and collected, or whether the vaporized metal is condensed and collected in a batch process, if the residence time of the vaporized metal in the collection chamber 1509 increases, the collection efficiency increases.

Further, the processing apparatus 1500 of the present invention is provided with a carrier gas introduction system 1510 for introducing N ₂ or a rare gas as a carrier gas into an airtight container 1501. The vaporized metal is efficiently guided to the recovery chamber 1509 by the carrier gas introduced from the introduction valve 1512. With such a configuration, the processing apparatus of the present invention can process an object having the first metal that is mercury and the second metal other than mercury. In the processing apparatus of the present invention, water, mercury first metal, resin decomposition product gas, and the like generated from the processing object are recovered by the first recovery means or the second recovery means connected to the airtight container. be able to. In addition, mercury can be recovered in a metal state because it is vaporized under reduced pressure. Further, since water, mercury, resin, and the like generated from the object to be treated are treated before vaporizing the second metal, sufficient decompression and heating to vaporize the second metal must be performed. Can be.

In the hermetically sealed container, the resin is decomposed under the condition that the metal of the object to be treated is not oxidized or vaporized, so that the second metal can be separated and recovered from the object to be treated in a metal state.

FIG. 19 shows the processing apparatus 150 shown in FIG.
FIG. 2 is a diagram schematically illustrating an example of a configuration of an exhaust system and a liquid sealing circulation system of No. 0;

FIG. 20 schematically shows an example of temperature control by the control means shown in FIG. This flowchart shows the temperature control inside the hermetic container 1501 when the pressure inside the hermetic container 1501 is within a certain range.

(Embodiment 6) FIG. 21 is a perspective view schematically showing an example of the processing apparatus of the present invention. The inside is shown with a part cut away.

This processing apparatus 100 is for processing an object to be processed 150 having a first metal and a second metal as constituents, and includes a purge chamber 101 and a first hermetic chamber 10.
2, a second hermetic chamber 103 and a cooling chamber 104.

Each of these chambers is a door 10 which is a partition which can be opened and closed.
Separated by five. That is, the outside of the apparatus and the purge chamber 101 are separated by the door 105a, the purge chamber 101 and the first hermetic chamber 102 are separated by the door 105b, and the first hermetic chamber 102 and the second hermetic chamber 103 are separated by the door 105c. The second hermetic chamber 103 and the cooling chamber 104 are separated from each other by a door 105d, and the cooling chamber 104 and the outside of the apparatus are separated from each other by a door 105e.

The door 105 separating these chambers has airtightness and heat insulation, and separates the chambers thermally and pressure. Since the thermal load applied to the doors 105a and 105b is small, it is sufficient that airtightness can be maintained.

An exhaust system 106 is connected to the purge chamber 101. The exhaust system 106 includes a liquid ring vacuum pump. Valves (not shown) are provided between the purge chamber 101 and the exhaust system 106 and between the respective vacuum pumps. The same applies to a case not particularly described below.

The object 1 to be treated is placed between the purge chamber 101 and the exhaust system 106 due to the reduced pressure in the purge chamber 101 or the like.
A trap 107 for removing moisture, hydrogen gas, and the like discharged from 50 is provided. Therefore, even if moisture, hydrogen gas, or the like is discharged from the processing target object 150 in the purge chamber, it is recovered by the trap 107 and the liquid sealing vacuum pump. The trap 107 may be provided as needed.

The pressure in the purge chamber 101 is controlled by the exhaust system 10.
6 and a vacuum gauge as a pressure sensor (not shown). As a vacuum gauge, a Bourdon tube, a Pirani gauge and the like may be used as necessary.

The purging chamber 101 has a purging chamber 101.
A carrier gas introduction system for gas replacement inside is connected, and 108 is a carrier gas introduction valve. The carrier gas introduction system is connected to a carrier gas reservoir (not shown). Here, N ₂ is used as a carrier gas, but a rare gas such as Ar may be used.

[0239] Further, a heating means may be provided in the purge chamber 101 to preheat the object 150 to be processed.

The pressure in the purge chamber 101 and the pressure in the first hermetic chamber 102 are made substantially equal, and the door 105b is opened to open the pusher 130.
Moves the processing target object 150 to the first hermetic chamber 102. Hereinafter, even if not particularly described, the door 105 may be opened and closed by balancing the pressure on both sides.

[0241] The first hermetic chamber 102 is
This is a processing chamber for evaporating the first metal, which is mercury, while holding the second metal of 0 so as not to evaporate.

The first hermetic chamber 102 is provided with an electric heater 109 as a heating means. The heating means is not limited to the electric heater 109, and may be selected or combined as needed. For example, gas, oil, or the like may be burned, or dielectric heating may be performed.

The temperature in the first hermetic chamber 102 is adjusted by the electric heater 109, a temperature sensor (not shown), and a control means (not shown) for controlling the electric heater based on measured values from the temperature sensor. The control means may be, for example, a computer in which a program for inputting a measured value or a measured voltage from a temperature sensor and for outputting a signal or voltage for changing the power supplied to the electric heater is used. Good.

[0244] Such control may be performed by an analog circuit, or an operator may operate the heating means according to the measured temperature.

In the processing apparatus illustrated in FIG. 21, the temperature in the first hermetic chamber 102 is controlled by the first hermetic chamber 1 described later.
02 together with the pressure and oxygen concentration in the purge chamber 10
The conditions in the first and second hermetic chambers 103 and the cooling chamber 104, the opening and closing of the partition 105, and the transfer of the processing object 150 are integrally controlled by control means (not shown).
This control means may be implemented by mounting a control program in an electronic computer, for example.

The exhaust system 110 is also connected to the first hermetic chamber 102. This exhaust system has a liquid ring vacuum pump, similarly to the exhaust system 110 of the purge chamber 101. Then, the mercury vaporized and vaporized from the object to be treated is recovered from a liquid sealing circulation system of a liquid ring vacuum pump. The sealing liquid circulation system may have the configuration illustrated in FIGS. 9 and 10, for example.

The pressure in the first hermetic chamber 102 is adjusted by the exhaust system 110 and a vacuum gauge as a pressure sensor (not shown). As the vacuum gauge, a Bourdon tube, a Pirani gauge, or the like may be used as necessary, as described above.

The first hermetic chamber 102 is connected to a carrier gas introduction system for adjusting the oxygen concentration in this chamber. Reference numeral 112 denotes a carrier gas introduction valve. The carrier gas introduction system is connected to a carrier gas reservoir (not shown).

Here, N ₂ is used as the carrier gas, but a rare gas such as Ar may be used.

Exhaust system 110 and carrier gas introduction valve 112
By appropriately operating the first airtight chamber,
Or it can be pressurized. The pressure adjusting means of this device can adjust the pressure in the system from 10 ^-3 Torr to about 4 × 10 ³ Torr. The pressure may be further reduced by changing the capacity and capacity of the exhaust system. Further, the pressure may be further increased by pre-pressurizing the carrier gas.

The oxygen concentration in the first hermetic chamber 102 is adjusted by a carrier gas introduction valve 112 and an oxygen concentration sensor (not shown). For example, a zirconia sensor may be used as the oxygen concentration sensor. When the temperature in the first hermetic chamber 102 is low for the zirconia sensor,
For example, the gas extracted from the inside of the first hermetic chamber 102 is 773
You may make it measure by adjusting to about K.

In addition to the zirconia sensor, for example, the oxygen concentration may be measured by infrared spectroscopy of the gas in the system.

The oxygen concentration in the first hermetic chamber 102 may be adjusted not by introducing a carrier gas such as N ₂ but by the total pressure in the system.

When the vaporization of mercury from the object to be processed 150 starts, the atmosphere of mercury-containing gas prevails in the first hermetic chamber 102. Therefore, if the oxygen concentration is sufficiently reduced by reducing the pressure in the first hermetic chamber 102 before the start of the vaporization of mercury, the burning of the processing object 150 and the processing object 150
Can be prevented from oxidizing the constituent metals.

As described above, the pressure and the oxygen concentration in the first hermetic chamber 102 may be controlled in the same manner as the temperature. For example, a computer is provided with a program that receives a measured value or a measured voltage from a pressure sensor or an oxygen concentration sensor as an input, and outputs a signal or voltage for controlling a valve of the exhaust system 110 and a carrier gas introduction valve 112 as an electronic computer. It may be used.

A neutralization cooling unit 111 for neutralizing and cooling the mercury-containing gas vaporized from the object 150 is disposed between the first hermetic chamber 102 and the exhaust system 110. The neutralization cooling unit 111 neutralizes and cools the mercury-containing gas vaporized from the processing object 150 as described above. When a gas such as a halogen or a halogenated hydrocarbon is contained in a gas vaporized from the processing target object 150, the gas may be decomposed using a catalyst or the like, and then neutralized.

In order to prevent the harmful gas discharged from the object 150 to be processed from leaking out of the apparatus, a multi-exhaust gas chamber (not shown) is provided after the exhaust system 106, 110, 114, 115 connected to each chamber. Is also good.

The temperature, pressure and oxygen concentration in the first hermetic chamber 102 are controlled as described above. Therefore, the first metal can be vaporized without vaporizing the second metal of the processing target object 150. Then, the vaporized gas of the first metal is recovered by the liquid-circulating system or the condenser of the liquid-ring vacuum pump as described above.

In the processing apparatus 100 of the present invention, the object to be processed 150 heated in the first hermetic chamber 102 is transferred to the second hermetic chamber 103 without cooling, so that the thermal efficiency is very high.

The second hermetic chamber 103 contains the object 15 to be processed.
This is a processing chamber for selectively vaporizing and collecting the second metal 0 from the processing target object 150.

The second hermetic chamber 103 is provided with the same electric heater 109 as the first hermetic chamber as a heating means. The heating means is not limited to the electric heater 109, and may be selected or combined as needed.

As described above, the temperature in the second hermetic chamber 103 is controlled by the electric heater 113 and a temperature sensor (not shown) in the same manner as in the first hermetic chamber 102. That is, the temperature in the second hermetic chamber 103 is determined by the pressure, the oxygen concentration, and the like in the second hermetic chamber 103, and the various conditions of the purge chamber 101, the first hermetic chamber 102, the cooling chamber 104, and the partition 105 Is controlled by a control means (not shown) in an integrated manner.

The exhaust system 114 is also connected to the second hermetic chamber 103. The configuration of the exhaust system is similar to that of the exhaust system 114 of the purge chamber 101.

The pressure in the second hermetic chamber 103 is adjusted by the exhaust system 114 and a vacuum gauge (not shown) which is a pressure sensor. As the vacuum gauge, a Bourdon tube, a Pirani gauge, or the like may be used as necessary, as described above.

The second hermetic chamber 103 is connected to a carrier gas introduction system for adjusting the oxygen concentration in this chamber. Reference numeral 112 denotes a carrier gas introduction valve. The carrier gas introduction system is connected to a carrier gas reservoir (not shown). Here, N ₂ is used as a carrier gas, but a rare gas such as Ar may be used.

Exhaust system 114 and carrier gas introduction valve 112
By appropriately operating the first airtight chamber,
Or it can be pressurized. In this device, 10 ^-3 T
The pressure in the system can be adjusted from orr to about 4 × 10 ³ Torr. The pressure may be further reduced by changing the capacity and capacity of the exhaust system. Further, the pressure may be further increased by pre-pressurizing the carrier gas.

[0267] Since the vapor pressure (boiling point) of the first metal of the object to be treated 150 decreases with the decompression in the second hermetic chamber 103, the metal can be vaporized at a lower temperature. Therefore, the capability of the heating means and the exhaust means provided in the second hermetic chamber 103 is separated from the processing target object 150,
What is necessary is just to change according to the kind of metal to collect | recover.
For example, a dielectric heating means may be provided to heat the inside of the second hermetic chamber 103 to a higher temperature. Further, for example, a vacuum pump having a higher capacity and a larger displacement may be provided to reduce the pressure in the second hermetic chamber 103 to a higher vacuum. Depending on the capacity in the second hermetic chamber 103, a higher vacuum may be obtained by using an ion getter pump, a turbo molecular pump, or the like.

The oxygen concentration in the second hermetic chamber 103 is sufficiently low without any special adjustment because the pressure in the system is sufficiently reduced. Therefore, there is no need to actively adjust,
When an oxygen concentration adjusting means is provided, the first airtight chamber 10
What is necessary is just to carry out similarly to 2.

Although the processing apparatus 100 shown in FIG. 21 has a configuration in which one second airtight chamber 103 is provided, the processing apparatus 100 shown in FIG.
May be provided in plurality. By providing the plurality of second hermetic chambers 103 having different internal temperature and pressure conditions, a plurality of metals having different vapor pressures can be vaporized and collected from the processing target object 150.

When it is not necessary to separate and collect metals from the object 150 to be processed, the metals may be vaporized and recovered from the object 150. For example, when the Zn alloy is removed from the object to be processed, the Zn alloy is heated to a temperature at which Zn is vaporized by the pressure in the second hermetic chamber 103, and the vaporized Zn is condensed and collected in the recovery chamber. if. Further, for example, Pb-S
When removing the n-alloy from the object to be treated, the pressure in the second hermetic chamber 103 may be used to recover Pb and Sn by heating to a temperature at which Pb and Sn are vaporized. Of course, Pb and Sn may be selectively vaporized and recovered.

[0271] Between the second hermetic chamber 103 and the exhaust system 114, the second gaseous state vaporized from the object 150 is processed.
A recovery chamber 115 for recovering the metal is provided. The recovery chamber cools and condenses the metal vaporized in the chamber to a temperature lower than the melting point and recovers the metal. The inside of the recovery chamber 115 may have, for example, a countercurrent structure or a spiral structure. Alternatively, the recovery chamber 115
A valve or an openable / closable partition may be provided between the airtight chamber 103 and the second hermetic chamber 103 and between the collection chamber 115 and the exhaust system 114. That is, when the vaporized metal is introduced from the processing target object 150 into the recovery chamber 115, the recovery chamber 115 may be closed and cooled, and the metal may be condensed and recovered.

Regardless of whether the vaporized metal is continuously condensed and recovered, or whether the vaporized metal is condensed and recovered in a batch process, the longer the residence time of the vaporized metal in the recovery chamber 115, the higher the recovery efficiency.

Also, N ₂ or a rare gas may be introduced into the second hermetic chamber 103 as a carrier gas. The vaporized metal is efficiently introduced into the collection chamber by the carrier gas.

The recovery chamber 115 is provided in the second hermetic chamber 10.
3 may be provided with a plurality of systems. The same metal may be collected in a plurality of collection chambers 115,
A plurality of metals may be selectively vaporized by adjusting the temperature and pressure in the second hermetic chamber 103 in a stepwise manner, and the plurality of collection chambers 115 may be switched to be collected.

The temperature, pressure and oxygen concentration in the second hermetic chamber 103 are controlled as described above. Therefore, the constituent metals of the processing target object 150 are vaporized according to the vapor pressure thereof,
In the recovery chamber 115, it can be recovered in a metal state.

The object 15 to be processed in the first hermetic chamber
Depending on the degree of vaporization of the first metal, the first gas may be discharged. Such a second
The first metal vaporized in the airtight chamber of
By connecting an exhaust system equipped with a liquid-ring vacuum pump at the subsequent stage, the liquid may be captured and collected by the sealing liquid of the liquid-ring vacuum pump. As an exhaust system, a mechanical booster may be provided in front of the liquid ring vacuum pump.

As described above, in the second hermetic chamber 103, a predetermined metal can be vaporized and recovered from the object to be processed.

From the second hermetic chamber 103 to the processing object 15
If 0 is directly taken out of the apparatus 100, the object 150 to be processed may be rapidly oxidized. Further, the inside of the second hermetic chamber 103 must be returned to the atmospheric pressure.
It is also inconvenient from the viewpoint of maintaining the airtightness in the area 03. For this reason, in the processing apparatus 100 illustrated in FIG.
A cooling chamber 104 is provided downstream of the second hermetic chamber 103.

This cooling chamber is provided with the same pressure adjusting means and oxygen concentration adjusting means as those of the purge chamber 101, the first hermetic chamber 102, and the second hermetic chamber 103. That is, an exhaust system 116 similar to that described above and a carrier gas introduction valve 117 are provided.

The object to be treated 150 from which a predetermined metal has been separated in the second hermetic chamber 103 is transferred to the cooling chamber 104 and cooled in a state where the pressure and the oxygen concentration are adjusted. The carrier gas is used not only for adjusting the oxygen concentration but also for the object 15 to be treated.
It also functions as 0 cooling gas.

A trap 118 may be provided between the cooling chamber 104 and the exhaust system 116 for removing gas and the like discharged from the object to be processed by preheating.

When the object 150 to be treated is sufficiently cooled in the cooling chamber 104, it is taken out of the apparatus.

The object 1 to be processed to the processing apparatus 100
Introduction and removal of the object 50 and the object 15 to be treated between the rooms
The transfer of 0 may be performed by the pusher 130 and the drawer 131.

The pusher 130 and the drawer 131
This operation may be performed by the above-described control unit (not shown) together with the opening and closing of the partition wall 105.

FIG. 22 is a diagram schematically showing the processing apparatus of the present invention exemplified in FIG.

The purge chamber 10 not shown in FIG.
1, the temperature sensor 201a in the first hermetic chamber 102, the pressure sensor 202b, the oxygen concentration sensor 203, and the temperature sensor 201 in the second hermetic chamber 103.
c, a signal from the pressure sensor 202c, and a signal from the pressure sensor 202d in the cooling chamber 104 are transmitted to a control panel 200 constituting control means.
Is transmitted to The control means may be configured by mounting a program on an electronic computer.

The control means may control the heating means, the pressure adjusting means, and the oxygen concentration adjusting means according to the state of each room in the apparatus. Opening and closing of the partition 105;
The transfer of the processing target object 150 by the pusher 130 and the drawer 131 may be performed by this control means. Reference numeral 210 denotes a monitor that indicates to the operator the state of each room such as temperature, pressure, oxygen concentration, and the open / closed state of the partition 105. Reference numeral 211 denotes a multiple exhaust gas treatment device.

(Embodiment 7) FIG. 23 is a diagram schematically showing another example of the processing apparatus of the present invention. The inside is shown with a part cut away. This processing apparatus 300 also has a processing target object 35 having a first metal and a second metal as constituent materials.
0 is processed.

The processing apparatus 300 includes a purge chamber 301, an airtight chamber 302, and a cooling chamber 303. This airtight chamber 300 is the first chamber of the processing apparatus 100 illustrated in FIG.
And the function of the second hermetic chamber 103 is also provided. That is, first, the first metal of the processing target object 350 is vaporized in the hermetic chamber 302, and then the second metal is separated and recovered in the same hermetic chamber 302. In particular, when the second metal is immediately vaporized to be isolated, the constituent metal of the processing object 350 need not be vaporized.

Although the hermetic chamber 302 is provided with a temperature adjusting means, a pressure adjusting means and an oxygen concentration adjusting means, the oxygen concentration may be adjusted by the total pressure in the hermetic chamber 302 as described above. .

The temperature in the hermetic chamber 302 may be adjusted by the electric heater 309 and a temperature sensor (not shown).

The pressure in the airtight chamber 302 is adjusted by the exhaust system 31.
0, 314, a carrier gas introduction system, and a pressure sensor (not shown). 312 is a carrier gas introduction valve.

Between the airtight chamber 302 and the exhaust system 310,
An oiling device 311 as condensation and recovery means for recovering the vaporized gas of the first metal of the processing object 350 is provided.

[0294] Between the airtight chamber 302 and the exhaust system 314, there is provided a collection chamber 3 serving as a condensation and recovery means for recovering vaporized constituent metal gas from the processing object 350.
15 are provided. If it is not necessary to vaporize the constituent metal of the object to be treated, a plurality of oiling devices 311 may be provided.

[0295] Purge chamber 301, cooling chamber 303, partition 30
5, the carrier gas introduction system, the pusher 330, and the drawer 331 are the same as those of the processing apparatus 100 illustrated in FIG. The control means may be provided in the same manner.

(Embodiment 8) FIG. 24 is a diagram schematically showing another example of the processing apparatus of the present invention.

[0297] The processing apparatus 400 includes a first hermetic chamber 401.
And a second hermetic chamber 402. First airtight room 4
Reference numeral 01 denotes a temperature control means (not shown), which is connected to a liquid ring vacuum pump 404 having a liquid sealing circulation system 103. The second hermetic chamber includes a temperature control unit (not shown), and is connected to the exhaust system 405 and the collection chamber 406. Further, a first hermetic chamber 401 and a second hermetic chamber 402
Is connected to a carrier gas introduction system 407, which can adjust and pressurize the oxygen concentration in the airtight chamber. 40
8 is a carrier gas reservoir.

That is, the first metal of the object to be treated having the first metal and the second metal is vaporized in the first hermetic chamber 401, and the vaporized gas is sealed by the liquid ring vacuum pump 404. Capture and collect. At this time, the first metal is vaporized while controlling the temperature, pressure, and oxygen concentration in the first hermetic chamber 401 by the above-described control means so that the second metal of the object to be processed is not vaporized. What should I do?

The components vaporized from the object to be treated containing the first metal captured by the liquid sealing of the liquid ring vacuum pump 404 are recovered from the liquid sealing circulation system 403 of the liquid ring vacuum pump 404 as described above. What should I do? Sealing liquid circulation system 40
3 may be configured as shown in FIGS. 9 and 10, for example.

[0300] In the second hermetic chamber 402, the temperature and pressure inside the hermetic chamber are adjusted to vaporize the second metal, and the second metal is recovered in the recovery chamber 406. The temperature and the pressure in the second hermetic chamber 402 may be adjusted by the same control means as in the first hermetic chamber 401.

A purge chamber may be provided upstream of the first hermetic chamber 401 or downstream of the second hermetic chamber 402.

(Embodiment 9) FIG. 25 is a diagram schematically showing another example of the processing apparatus of the present invention.

This processing apparatus 500 is an apparatus for processing an object to be processed having a first metal and a second metal, which are mercury, as constituents, and includes a purge chamber 501, a first airtight chamber 5
02, a second hermetic chamber 503, a third hermetic chamber 504, and a cooling chamber 505.

The purge chamber 501 is connected to a trap 506 and an exhaust system 507. The first hermetic chamber 502 is connected to a liquid ring vacuum pump 508 and a liquid sealing circulation system 509. The second hermetic chamber 503 is connected to the collection chamber 510 and the exhaust system 511. The third hermetic chamber 504 is connected to the collection chamber 512 and the exhaust system 513. The cooling chamber 505 is connected to the trap 514 and the exhaust system 515. The first hermetic chamber 502, the second hermetic chamber 503, and the third hermetic chamber 504 are provided with a temperature control means (not shown).
516 is a carrier gas introduction system, and 517 is a carrier gas reservoir.

Further, the first hermetic chamber 502 is provided with an oxygen concentration sensor (not shown) so that the oxygen concentration in the system can be adjusted independently of the total pressure.

That is, the processing apparatus 500 is provided with a plurality of processing chambers for vaporizing a plurality of second metals constituting an object to be processed. Even when the object to be processed has a plurality of constituent metals, the object can be selectively vaporized and collected in the second hermetic chamber 503 and the third hermetic chamber 504, respectively.

(Embodiment 10) FIG. 26 is a diagram schematically showing another example of the processing apparatus of the present invention.

The processing apparatus 600 is an apparatus for processing an object to be processed having a first metal and a second metal as mercury as constituent materials. The processing apparatus 600 has a plurality of recovery systems connected to one airtight container 601 and performs processing by switching the recovery systems according to the temperature, pressure, and oxygen concentration inside the airtight container 601.

FIG. 27 shows the temperature, pressure,
FIG. 3 is a diagram schematically showing a configuration of a control system 610 for adjusting an oxygen concentration. As described above, all or a part of the control means 611 may be mounted on an electronic computer as a control program, for example, to control the apparatus.

[0310] An oiling device 602a is connected to the airtight container 601 for recovering a gas produced by decomposition of the resin component of the object to be treated, and the oiling device 602a is connected to an exhaust system 603a.

[0311] A liquid-sealed vacuum pump 602b for recovering the vaporized mercury-containing gas of the first metal of the object to be treated is connected to the airtight container 601. It is connected to the system 603. As the liquid sealing circulation system, for example, the configuration illustrated in FIGS. 9 and 10 may be adopted.

An exhaust gas treatment device 604 for making exhaust gas harmless, odorless, and smokeless is provided downstream of the exhaust system 603a.

A plurality of collection chambers 605 for collecting the second metal of the object to be processed vaporized in the airtight container 601 are connected to the airtight container 601, and each of the recovery chambers is connected to an exhaust system 606. I have.

A plurality of collection chambers 605 connected to the airtight container 601 may collect the same metal. Alternatively, a plurality of metals having different vapor pressures (boiling points) may be recovered by switching according to the temperature and pressure conditions in the airtight container 601.

The airtight container 601 is connected with a carrier gas introduction system. 607 is a carrier gas reservoir. By introducing a carrier gas such as N ₂ or Ar, the oxygen concentration in the hermetic container 601 can be adjusted independently of the total pressure. Further, the inside of the airtight container 601 may be pressurized by introducing a prepressurized carrier gas. By pressing the object to be treated in a non-oxidizing atmosphere, the decomposition efficiency of the first metal is improved.

[0316] The oxygen concentration in the airtight container 601 may be adjusted by the total pressure. FIG. 28 is a diagram schematically showing another example of the recovery system of the processing apparatus of the present invention.

This processing apparatus has the same configuration as the processing apparatus illustrated in FIG. 26, but illustration of parts other than the recovery system is omitted.

There is provided a collection chamber 611 separated from the airtight container 601 by a partition 610 that can be opened and closed. The collection chamber 611 has a temperature control unit (not shown). The recovery chamber 611 may be connected to a carrier gas introduction system.

[0319] The collection chamber 611 is connected to a collection chamber 605 and an exhaust system 606.

When the temperature and pressure conditions in the airtight container 601 allow the first or second metal to evaporate, the partition 610 is opened and the object to be treated 612 is introduced into the collection chamber 611 and the partition
Close 10.

Then, while maintaining the temperature and pressure conditions, the vaporized metal may be condensed and recovered by the recovery chamber 605.

With such a recovery chamber 611, while collecting metal from the object to be treated in the recovery chamber 611,
Various conditions such as temperature, pressure, and oxygen concentration in the airtight container 601 can be controlled independently of the collection chamber 611. Therefore, the operation efficiency of the device is improved.

Such a recovery chamber is, for example, shown in FIGS.
3, it may be arranged in a processing apparatus as exemplified in FIGS. 24 and 25.

FIG. 29 is a diagram schematically showing a recovery system including a recovery chamber 901 connected to the processing apparatus 100 illustrated in FIG. 21, for example.

The collection chamber 901 is connected to the second hermetic chamber 103 of the processing apparatus 100, and the second hermetic chamber 103 and the collection chamber 901 are separated from each other by a partition 902 that can be opened and closed. The collection chamber 901 includes a temperature control unit (not shown). Further, a carrier gas introduction system may be connected. A collection chamber 115 and an exhaust system 114 are connected to the collection chamber 901. Further, the collection chamber 115 and the exhaust system 114 may be connected in parallel with the collection chamber 901.

(Embodiment 11) FIGS. 30 and 31 schematically show an example of the structure of the recovery chamber.

FIG. 30 is a diagram schematically showing a recovery chamber having a countercurrent structure. FIG. 31A is a top view schematically showing the structure of a cyclone type recovery chamber.
(B) is a side view schematically showing the structure of a cyclone type recovery chamber. The recovery chamber only needs to be able to condense the metal vaporized from the object to be processed. Further, these recovery chambers may be connected in multiple stages.

(Embodiment 12) FIG. 32 schematically shows an example of the configuration of an exhaust gas treatment apparatus for treating exhaust gas discharged from an object to be treated and not collected by a liquid-ring vacuum pump, an oiling device, a collection chamber, or the like. FIG. A multi-exhaust gas treatment filter 1201, a smokeless filter 1202, and an odorless filter 1203 are connected downstream of a recovery system such as an oiling device or a recovery chamber. Other than this, for example, an alkali trap for collecting a halogen gas or the like,
A halogenated hydrocarbon decomposer using a catalyst or the like may be provided.

As described above, the processing apparatus of the present invention converts an object to be processed having a first metal and a second metal as constituents,
The first metal and the second metal can be vaporized stepwise and separated and recovered from the object to be treated.

[0330]

As described above, according to the processing apparatus and the processing method of the present invention, an object containing mercury can be effectively processed. Further, according to the processing apparatus and the processing method of the present invention, mercury can be separated and recovered from an object containing mercury.

Further, according to the processing apparatus and the processing method of the present invention, it is possible to separate and recover mercury from an object containing mercury and a metal other than mercury, and also separate and recover constituent metals other than mercury of the object to be processed. it can.

According to the processing apparatus and the processing method of the present invention, water can be removed from an object containing water and a plurality of constituent metals, such as a dry battery, and the constituent metals can be effectively separated and recovered.

According to the processing apparatus and the processing method of the present invention, mercury can be separated and recovered from an object containing mercury without generating polluted smoke, fly ash, incineration residues, and the like.

According to the processing apparatus and the processing method of the present invention, mercury can be separated and recovered from a dry battery containing mercury without generating polluted smoke, fly ash, incineration residues, and the like.

According to the processing apparatus and the processing method of the present invention, the constituent metals of the dry battery can be separated and recovered from the dry battery without generating polluted smoke, fly ash, incineration residue and the like.

According to the processing apparatus and the processing method of the present invention, the first metal and the second metal, which are mercury, can be separated from each other. It can be reused in many ways.

Further, by continuously vaporizing the first metal and the second metal, the heating efficiency is high and the input energy can be saved.

According to the processing apparatus and the processing method of the present invention, the first metal and the second metal can be separated and recovered while greatly suppressing the generation of dioxin during the processing, which contributes to environmental conservation. At the same time, it contributes to resource conservation.

[Brief description of the drawings]

FIG. 1 is a diagram schematically illustrating an example of a configuration of a processing apparatus according to the present invention.

FIG. 2 shows a configuration of a control unit provided in the processing apparatus of the present invention.
The figure which shows an example typically.

FIG. 3 is a graph showing the relationship between the vapor pressure of mercury and the pressure.

FIG. 4 is a diagram schematically illustrating an example of a configuration of a processing apparatus according to the present invention.

FIG. 5 is a diagram schematically showing one example of a configuration of a processing apparatus of the present invention.

FIG. 6 shows a configuration of a control unit provided in the processing apparatus of the present invention.
The figure which shows an example typically.

FIG. 7 is a sectional view schematically showing an example of the structure of a liquid ring vacuum pump.

FIG. 8 is a sectional view schematically showing an example of the structure of a liquid ring vacuum pump from another direction.

FIG. 9 is a diagram schematically illustrating an example of a configuration of a processing apparatus according to the present invention.

FIG. 10 is a diagram schematically illustrating an example of a configuration of a liquid sealing circulation system.

FIG. 11 is a diagram schematically showing an example of the configuration of a processing apparatus according to the present invention.

FIG. 12 is a diagram schematically showing one example of a configuration of a processing apparatus of the present invention.

FIG. 13 is a view schematically showing one example of a configuration of a processing apparatus of the present invention.

FIG. 14 is a diagram schematically illustrating an example of a configuration of a control unit included in the processing apparatus of the present invention.

FIG. 15 is a top view schematically showing the configuration of the processing apparatus of the present invention.

FIG. 16 is a diagram schematically illustrating an example of a configuration of a control unit included in the processing apparatus of the present invention. .

FIG. 17 is a diagram showing a relationship between vapor pressures and pressures of various metals.

FIG. 18 is a diagram showing a relationship between vapor pressures and pressures of various metals.

FIG. 19 is a diagram schematically illustrating an example of a configuration of an exhaust system and a liquid sealing circulation system of the processing apparatus illustrated in FIG.

FIG. 20 is a diagram schematically showing an example of temperature control by a control unit (when the pressure is constant).

FIG. 21 is a perspective view schematically showing one example of a processing apparatus of the present invention.

FIG. 22 is a diagram schematically showing the processing apparatus of the present invention exemplified in FIG. 1;

FIG. 23 is a view schematically showing another example of the processing apparatus of the present invention.

FIG. 24 is a view schematically showing another example of the processing apparatus of the present invention.

FIG. 25 is a view schematically showing another example of the processing apparatus of the present invention.

FIG. 26 is a view schematically showing another example of the processing apparatus of the present invention.

FIG. 27 is a diagram schematically showing a configuration of a control system for adjusting the temperature, pressure, and oxygen concentration of the processing apparatus of the present invention.

FIG. 28 is a view schematically showing another example of the processing apparatus of the present invention.

FIG. 29 is a diagram schematically showing a recovery system including a recovery chamber connected to the processing apparatus of the present invention.

FIG. 30 is a view schematically showing an example of the structure of a collection chamber.

FIG. 31 is a view schematically showing an example of the structure of a collection chamber.

FIG. 32 is a diagram schematically showing an example of the configuration of an exhaust gas treatment device.

[Explanation of symbols]

100 processing apparatus 101 purge chamber 102
1st airtight room 103 ... 2nd airtight room, 104 ... cooling room, 105 ...
… Door, 106 exhaust system 107… trap, 108… carrier gas introduction valve,
109: electric heater 110: exhaust system, 111: neutralizing cooling unit 112: carrier gas introduction valve, 113: electric heater, 114: exhaust system 115: collection chamber, 116: exhaust system, 117 …
... Carrier gas introduction valve 118 ... Trap, 130 ... Pusher, 131 ...
... Drawer 150 ... Object to be processed 200 ... Control panel 201 ... Temperature sensor 202 ...
Pressure sensor 203: oxygen concentration sensor, 204: carrier gas reservoir 403: liquid-circulating system, 404: liquid-ring vacuum pump 508: liquid-ring vacuum pump, 509: liquid-circulating system 602a ... oiling device, 602b ... liquid-sealed vacuum pump, 603a ... exhaust system 603b ... sealing liquid circulation system 1100 ... processing device, 1101 ... hermetic container, 110
2 ... exhaust means 1103 ... collection means, 1104 ... temperature control means, 1
105 pressure adjusting means 1106 temperature sensor 1107 heater 11
08 Pressure sensor 1110 Control means 1111 First condenser 1112 Second condenser 1113 Mercury reservoir 1114 Exhaust gas treatment tower 1200 Processing apparatus 1201 Airtight container 120
2. Exhaust means 1203 Liquid-sealed vacuum pump 1203b Sealed liquid
1204: Sealing liquid circulation system 1205: Temperature adjusting means 1206: Pressure adjusting means 1207: Temperature sensor, 1208: Heater, 12
09 ... Pressure sensor 1210 ... Pressure system, 1210b ... Carrier gas introduction system 1211 ... Oxygen concentration sensor, 1212 ... Oxygen concentration adjusting means 1213 ... Control means 1215 ... Sealing liquid cooling means, 1216 ... Gas Liquid separation unit 1217 Mercury recovery unit 1218 Exhaust gas treatment unit 1219 pH adjustment unit 1220 Sealed liquid reservoir 1231 Ferrite treatment tank 1232 Reduction vaporization tank 1233 Condenser 1234 First mercury settling tank 1235 First mercury separation tank 1236 Washing cooling tower 1237 Second mercury settling tank 1238 Second mercury separation tank 1239 Mercury adsorption tower 1240 ... Mercury absorbing liquid reservoir 1241 ... activated carbon adsorption tower, 1251 ... casing (body ring), 1251a ... ... low-pressure side casing 251b ...... pressure casing, 1253 ...... drive shaft, 1253B ...... shaft seal 1254 ...... impeller, 1254a ...... low pressure side impeller 1254b ...... high side impeller, 1255 ...... inlet, 1
256 exhaust outlet 1257 intermediate cover 1258 sealed liquid inlet 1
259: Sealed liquid discharge port 1260: Gas adsorption unit, 1261: Gas cooling means 1262: Mercury reservoir 1300: Processing device, 1301: Airtight container, 130
2 First exhaust system 1302a Liquid-sealed vacuum pump 1303 Liquid-circulating system 1304 Condenser 1305 Gas neutralizing means 1306 Carrier gas introduction system 1306b Pressurizing system 1311 second exhaust system 1311b exhaust means 1312 recovery chamber 1313 gas cooling tower 1314 temperature adjusting means 1315 pressure adjusting means 1316 temperature sensor 1317 heater 13
18 Pressure sensor 1319 Oxygen concentration sensor 1320 Oxygen concentration adjusting means 1330 Control means 1500 Processing device 1501 Airtight container 150
1a Airtight lid 1502 First exhaust system 1503a, 1503b, 1503c Second exhaust system 1504 Gas neutralization unit 1505 Oil diffusion pump 1506 Oil diffusion pump 1507 Rotary Pump 1508 Holding pump 1509a, 1509b, 1509c Recovery chamber 1510 Carrier gas introduction system, 1511 Carrier gas reservoir 1512 Carrier gas introduction valve, 1513 Temperature control means 1514 Pressure control means 1515 ... temperature sensor,
1516 heater 1517 pressure sensor 1518 oxygen concentration sensor 1519 oxygen concentration adjusting means 1520 control means

Claims (28)

[Claims] 1. An airtight container for housing an object containing a first metal that is mercury; a temperature adjusting means for adjusting the temperature in the airtight container; and an airtight container connected to the airtight container and evacuating the airtight container. Pressure adjusting means having a first exhaust system; first controlling means for controlling the temperature adjusting means and the pressure adjusting means such that the first metal in the object is vaporized under reduced pressure; A processing apparatus, comprising: a first recovery unit disposed between a container and a first exhaust system, for condensing and recovering a first metal vaporized from the object. 2. An airtight container for containing an object containing a first metal that is mercury; temperature adjusting means for adjusting the temperature in the airtight container; and an airtight container connected to the airtight container and evacuating the airtight container. A pressure adjusting means having a first exhaust system provided with a liquid ring vacuum pump having a liquid sealing circulation system; a temperature adjusting means and a pressure adjusting means for evaporating a first metal in the object under reduced pressure; A first control means for controlling the means, and a second recovery means disposed in the sealing liquid circulation system for recovering the first metal captured by the sealing liquid. Processing equipment. 3. An airtight container for containing an object containing a first metal that is mercury; temperature adjusting means for adjusting the temperature in the airtight container; and connected to the airtight container to exhaust the airtight container. A pressure adjusting means having a first exhaust system provided with a liquid ring vacuum pump having a liquid sealing circulation system; a temperature adjusting means and a pressure adjusting means for evaporating a first metal in the object under reduced pressure; First control means for controlling the means, and first collection means disposed between the hermetic container and the first exhaust system for condensing and collecting the first metal vaporized from the object. A first liquid trapping device disposed in the liquid sealing circulation system and captured by the liquid sealing liquid;
A second recovery means for recovering the metal. 4. A first metal which is mercury and a second metal other than mercury.
An airtight container for storing the object to be treated containing the metal of the present invention; a temperature adjusting means for adjusting the temperature in the airtight container; and a liquid connected to the airtight container and having a liquid sealing circulation system for reducing the pressure in the airtight container. A first pressure adjusting means having a first exhaust system provided with a sealed vacuum pump; and a second exhaust connected to the airtight container so as to be switchable with the first pressure adjusting means and reducing the pressure in the airtight container. Pressure adjusting means having a system, and the temperature adjusting means and the first pressure adjusting means such that the first metal in the object is vaporized in the hermetic container depressurized by the first exhaust system. A temperature control unit and a second pressure adjustment unit such that a second metal in the object is vaporized in the hermetic container decompressed by a second exhaust system. Control means for controlling the airtight container, It disposed between the exhaust system of the first to recover by condensing the first metal vaporized from the object
And a second collecting means disposed in the sealing liquid circulation system for collecting the first metal trapped in the sealing liquid, and between the airtight container and the second exhaust system. A third disposed to collect and recover the second metal vaporized from the object;
And a collecting means. 5. A first metal which is mercury and a second metal other than mercury.
An airtight container for storing the object to be treated containing the metal of the present invention; a temperature adjusting means for adjusting the temperature in the airtight container; and a liquid connected to the airtight container and having a liquid sealing circulation system for reducing the pressure in the airtight container. A first pressure adjusting means having a first exhaust system provided with a sealed vacuum pump; and a second exhaust connected to the airtight container so as to be switchable with the first pressure adjusting means and reducing the pressure in the airtight container. Pressure adjusting means having a system, and the temperature adjusting means and the first pressure adjusting means such that the first metal in the object is vaporized in the hermetic container depressurized by the first exhaust system. A temperature control unit and a second pressure adjustment unit such that a second metal in the object is vaporized in the hermetic container decompressed by a second exhaust system. Second control means for controlling the liquid sealing system A second recovery means for recovering the first metal captured by the sealing liquid; and a second recovery means for recovering the second metal disposed between the airtight container and a second exhaust system. 3. A processing apparatus comprising: (3) a collection unit. 6. A first metal which is mercury and a second metal other than mercury.
A processing apparatus for processing an object containing a metal, comprising: a temperature adjusting means; and a first pressure adjusting means having a first exhaust system provided with a liquid ring vacuum pump having a liquid sealing circulation system. A first hermetic zone, separated from the first hermetic zone by an openable / closable partition,
A second hermetic region including a temperature adjusting device and a second pressure adjusting device having a second exhaust system; and a second airtight region in the object in the first airtight region depressurized by the first exhaust system. First control means for controlling the temperature control means and the first pressure control means so that the first metal is vaporized; and A second control means for controlling the temperature adjustment means and the second pressure adjustment means so that the second metal is vaporized; and a second control means disposed between the first airtight region and the first exhaust system. A first recovery unit that condenses and recovers the first metal vaporized from the object; and a second recovery unit that is disposed in the sealing liquid circulation system and recovers the first metal captured by the sealing liquid. And a second gold vaporized from the object, disposed between the second hermetic zone and the second exhaust system. Processing apparatus characterized by comprising a third collecting means for collecting and condensing the. 7. A first metal which is mercury and a second metal other than mercury.
A processing apparatus for processing an object containing a metal, comprising: a temperature adjusting means; and a first pressure adjusting means having a first exhaust system provided with a liquid ring vacuum pump having a liquid sealing circulation system. A first hermetic zone, separated from the first hermetic zone by an openable / closable partition,
A second hermetic region including a temperature adjusting device and a second pressure adjusting device having a second exhaust system; and a second airtight region in the object in the first airtight region depressurized by the first exhaust system. First control means for controlling the temperature control means and the first pressure control means so that the first metal is vaporized; and A second control means for controlling the temperature adjusting means and the second pressure adjusting means so that the second metal is vaporized, and the second metal is caught by the sealing liquid provided in the sealing liquid circulation system. Second recovery means for recovering the first metal; and condensing the second metal vaporized from the object, which is disposed between the second hermetic zone, the airtight container, and the second exhaust system. And a third collecting means for collecting the waste water. 8. The apparatus according to claim 4, further comprising a gas cooling means disposed between the second recovery system and the second exhaust system, for cooling gas vaporized from the object. A processing device according to any one of the above. 9. The sealing liquid circulation system further includes a sealing liquid cooling unit for cooling the sealing liquid, and a pH adjusting unit for adjusting the pH of the sealing liquid.
A processing device according to any one of the above. 10. The apparatus according to claim 1, further comprising gas neutralizing means disposed between said hermetic container and said first exhaust system for neutralizing gas vaporized from said object. A processing device according to any one of the above. 11. The apparatus according to claim 1, further comprising a gas cooling unit disposed between the airtight container and the first exhaust system, for cooling gas evaporated from the object. A processing device according to any one of the above. 12. The processing apparatus according to claim 1, further comprising an oxygen concentration adjusting means for adjusting an oxygen concentration in said airtight container. 13. A first extraction step of heating an object containing a first metal, which is mercury, and extracting a gas containing the first metal in an airtight container decompressed by a first exhaust system connected thereto. A first gas from the gas between the hermetic container and a first exhaust system;
A first recovery step of condensing and recovering the metal. 14. An object containing a first metal, which is mercury, is heated in an airtight container decompressed by a first exhaust system equipped with a liquid ring vacuum pump to extract a gas containing the first metal. A processing method comprising: a first extraction step; and a second recovery step of capturing and recovering a first metal from the gas with a liquid sealed by the liquid ring vacuum pump. 15. An object containing a first metal, which is mercury, is heated in an airtight container decompressed by a first exhaust system equipped with a liquid ring vacuum pump to extract a gas containing the first metal. A first extraction step; a first recovery step of condensing and recovering a first metal from the gas between the hermetic container and the exhaust system; and And a second recovery step of capturing and recovering the first metal from the first method. 16. A dry battery having water, mercury and resin as constituents is heated in a hermetically sealed container decompressed by a first exhaust system equipped with a liquid ring vacuum pump to thermally decompose the resin and heat the dry battery. A first extraction step of extracting a gas containing water and the mercury; and a recovery step of capturing and recovering water and mercury in the gas by sealing the liquid-sealed vacuum pump. Characteristic processing method. 17. A first exhaust system provided with a temperature control means, a liquid ring vacuum pump, and a second exhaust system switchable to the first exhaust system.
Accommodating an object containing a first metal that is mercury and a second metal other than mercury in an airtight container having an exhaust system of A first extraction step of heating the object so that the first metal is vaporized and extracting a gas containing the first metal, and a second extraction step in the hermetic container depressurized by a second exhaust system. A second extraction step of heating the object so that the metal is vaporized and extracting a gas containing a second metal; and condensing the first metal between the hermetic container and the first exhaust system. A first recovery step of recovering, a second recovery step of capturing and recovering the first metal by sealing the liquid with the liquid ring vacuum pump, and a second recovery step between the airtight container and the second exhaust system. A third recovery step of condensing and recovering the second metal. 18. A first exhaust system provided with a temperature control means, a liquid ring vacuum pump, and a second exhaust system switchable with the first exhaust system.
Accommodating an object containing a first metal that is mercury and a second metal other than mercury in an airtight container having an exhaust system of A first extraction step of heating the object so that the first metal is vaporized and extracting a gas containing the first metal, and a second extraction step in the hermetic container depressurized by a second exhaust system. A second extraction step of heating the object so that the metal is vaporized and extracting a gas containing the second metal; and a second step of capturing and recovering the first metal by sealing the liquid with the liquid ring vacuum pump. 2. A processing method comprising: a collecting step of No. 2; and a third collecting step of condensing and collecting a second metal between the hermetic container and a second exhaust system. 19. An airtight container comprising a first exhaust system provided with a liquid ring vacuum pump, a second exhaust system switchably connected to the first exhaust system, and heating means, A step of housing a dry battery having a first metal, which is water, resin, and mercury, and a second metal other than mercury as constituents, and heating the dry battery in the hermetic container which is depressurized by a first exhaust system A first extraction step of thermally decomposing the resin and extracting a gas containing the water and the first metal; and condensing the first metal between the hermetic container and a first vacuum pump. A first collecting step of collecting and collecting the water and the first metal by sealing the liquid with the liquid ring vacuum pump; and a second evacuation system. A second extraction step of heating the dry battery in the hermetic container and vaporizing a second metal. Processing method being characterized in that comprising a third recovery step of recovering by condensing the second metal between the airtight container and the second exhaust system. 20. An airtight container comprising a first exhaust system provided with a liquid ring vacuum pump, a second exhaust system switchably connected to the first exhaust system, and heating means, A step of housing a dry battery having a first metal, which is water, a resin and mercury, and a second metal other than mercury as constituents, A first extraction step of thermally decomposing the resin and extracting a gas containing the water and the first metal; and capturing the water and the first metal with a liquid sealed by the liquid ring vacuum pump. A second collecting step of heating the dry battery in the hermetic container decompressed by a second exhaust system to vaporize a second metal; and a second extracting step of evaporating a second metal. A third recovery step of condensing and recovering the second metal with the exhaust system. Process wherein the. 21. An airtight container comprising a first exhaust system provided with a liquid ring vacuum pump, a second exhaust system switchably connected to the first exhaust system, and a heating means, A step of accommodating a dry battery having water, a resin, and a second metal as constituents; heating the dry battery in the hermetic container depressurized by a first exhaust system to thermally decompose the resin and to form the water; A first extraction step of extracting a gas containing: a second collection step of capturing and collecting the water with a liquid sealed by the liquid ring vacuum pump; and a hermetic container depressurized by a second exhaust system. A second extraction step of heating the dry battery inside to evaporate a second metal, and a third recovery step of condensing and recovering the second metal between the hermetic container and a second exhaust system. A processing method characterized by comprising: 22. The processing method according to claim 17, further comprising a cooling step of cooling the gas vaporized in the second extraction step immediately after the third recovery step. . 23. The method further comprises a neutralization step of neutralizing the gas vaporized in the first extraction step between the airtight container and the first exhaust system while maintaining a vaporized state of the first metal. The processing method according to any one of claims 13 to 22, wherein: 24. The method according to claim 13, further comprising a cooling step of cooling the gas vaporized in the first extraction step between the airtight container and the first exhaust system. The processing method described in 1. 25. The method according to claim 13, further comprising a step of exhausting the exhaust gas exhausted from the first exhaust system or the second exhaust system after performing an adsorption treatment with activated carbon. The processing method described. 26. The processing method according to claim 13, wherein the first extraction step is performed by adjusting the oxygen concentration. 27. The processing method according to claim 13, wherein the first extraction step is performed at 10 Torr or less. 28. The processing method according to claim 13, wherein the first extraction step is performed at 150 ° C. or lower.