JP2019044100A - Organic material removal device - Google Patents

Abstract

To provide an organic material removal method capable of efficiently removing an organic material from a composite material and a treating liquid from an inorganic material.SOLUTION: An apparatus for removing an organic material includes: a vessel for housing a composite material containing an inorganic material and an organic material decomposed with a treatment liquid; a treatment tank having a housing part for housing the vessel, a treatment liquid inflow part provided to the housing part, and a treatment liquid drain part provided to the housing part; temperature management means for heating or cooling the treatment liquid; means for circulating the treatment liquid for flowing in the treatment liquid from the treatment liquid inflow part to the inside of the treatment tank, and flowing out the treatment liquid in the treatment tank from the treatment liquid drain part; and means for air current circulating means for flowing in the air flow from the treatment liquid drain part into the treatment tank, and flowing out the air flow in the treatment tank from the treatment liquid inflow part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an organic material removing apparatus.

  Composite materials in which an organic material such as resin and an inorganic material such as carbon fiber are combined are used in various fields. Such composite materials include carbon fiber reinforced plastic (CFRP) containing resin and carbon fiber, glass fiber reinforced plastic (GFRP) containing resin and glass fiber, resin and metal parts And a prepreg for producing a CFRP, a GFRP, and the like.

Since the amount of discarded CFRP, GFRP, prepreg, molded coil, motor coil, etc., which are composite materials, is enormous, various technologies have been researched and developed for the purpose of recycling.
For example, JP2013-82850A discloses a continuous dissolution treatment apparatus. Furthermore, JP-A-2013-82850 discloses a batch-type dissolution treatment apparatus as a conventional example.

JP2013-82850A JP2013-82850A

  However, in both the continuous dissolution treatment apparatus and the batch dissolution treatment apparatus disclosed in JP2013-82850A, it may be difficult to bring the treatment liquid into contact with the entire composite material. In this case, the organic material is insufficiently dissolved, and a part of the organic material remains attached to the inorganic material recovered from the composite material, and the quality of the recovered inorganic material may be inferior. Moreover, in order to eliminate the problem that the organic material remains in the inorganic material, the processing time may increase.

  Furthermore, when removing the treatment liquid from the dissolved inorganic material, most of the treatment liquid remains in the inorganic material, and the treatment liquid may not be removed successfully.

  The present invention has been made in view of the above-described conventional problems, and an object thereof is to provide an organic material removal method capable of efficiently removing an organic material from a composite material and a treatment liquid from an inorganic material. And

The present invention relates to the following.
(1) A container that stores a composite material including an inorganic material and an organic material that is decomposed by a processing liquid, a storage section that stores the container, a processing liquid inflow section that is provided in the storage section, and a storage section that is provided in the storage section A treatment tank having a treatment liquid outflow portion, temperature management means for heating or cooling the treatment liquid, and allowing the treatment liquid to flow into the treatment tank from the treatment liquid inflow portion, and in the treatment tank A processing liquid circulating means for causing the processing liquid to flow out from the processing liquid outflow portion; and an airflow for causing an air flow to flow into the processing tank from the processing liquid outflow portion and for causing an air flow in the processing tank to flow out of the processing liquid inflow portion And an organic material removing device.
(2) The organic material removing device according to claim 1, wherein the treatment liquid inflow portion is provided below the storage portion in the vertical direction, and the treatment liquid outflow portion is provided vertically above the storage portion.
(3) The organic material removing apparatus according to claim 1 or 2, wherein the treatment tank includes a rectifying unit that rectifies the treatment liquid between the storage part and the treatment liquid inflow part.
(4) The organic material removing apparatus according to any one of claims 1 to 3, wherein the container includes a weir member that arranges the composite material along a flow direction of the processing liquid.
(5) The gas circulation unit according to any one of claims 1 to 4, wherein the gas circulation means is provided at a position where the height direction position of the part into which the gas flows in is higher than the height direction position of the part through which the gas flows out. Organic material removal equipment.

  ADVANTAGE OF THE INVENTION According to this invention, the organic material removal apparatus which can remove an organic material from a composite material efficiently can be provided. Moreover, according to this invention, the manufacturing apparatus of the recycled material which can collect | recover efficiently an inorganic material as a recycled material from a composite material can be provided.

It is the schematic which shows the principal part of the organic material removal apparatus 1 which concerns on this embodiment. It is a figure which shows an example of the container 12 which can be used conveniently for this embodiment, Fig.2 (a) shows the front view of the container 12, FIG.2 (b) shows the top view of the container 12, respectively. 2 is a cross-sectional view of a bucket 30. FIG. 4 is a front view showing another example of the bucket 30. FIG. It is a figure explaining the method of accommodating the plate-shaped composite material 52 in the bucket 30 which has the window part 50, Fig.5 (a) is the window part 50 opened toward the outer side of the side part 33, FIG. 5B is a diagram illustrating a state in which the bucket 30 is disposed in a state where a portion of the side surface portion 33 of the bucket 30 facing the position where the window portion 50 is attached is grounded, and FIG. It is a figure which shows the state by which the bucket 30 was arrange | positioned in the state which the bottom part 31 of the bucket 30 grounded.

  Hereinafter, embodiments of the organic material removing apparatus of the present invention will be described in detail. However, the present invention is not limited to the following embodiments. In the following embodiments, the components (including element steps and the like) are not essential unless otherwise specified. The same applies to numerical values and ranges thereof, and the present invention is not limited thereto.

FIG. 1 is a schematic view showing a main part of an organic material removing apparatus 1 according to this embodiment. The organic material removing apparatus 1 includes a column 10 that is a processing tank.
The column 10 includes a cylindrical column main body, a conical conical portion formed at one end on the lower side in the vertical direction of the column main body, and a lid (not shown) that can be opened and closed to close an opening at one end on the upper side in the vertical direction of the column main body. With body.
The column main body in the column 10 accommodates a container 12 that stores a composite material including an inorganic material and an organic material that is decomposed by the treatment liquid. A portion of the column 10 in which the container 12 is accommodated is the accommodating portion 14.
A treatment liquid inflow portion 16 is provided at the apex portion of the conical portion of the column 10. The processing liquid inflow portion 16 is located on the lower side of the accommodating portion 14 in the vertical direction.
A treatment liquid outflow portion 18 is provided above the storage portion 14 of the column 10 in the vertical direction.
In the column 10, a baffle plate 22 which is one of rectifying means for rectifying the processing liquid 20 is provided at the boundary between the column main body and the conical portion.
The baffle plate 22 is not particularly limited as long as the baffle plate 22 can rectify the treatment liquid 20. For example, the baffle plate 22 may be a plate made of a material insoluble in the treatment liquid and provided with a number of holes. A rectifying plate or the like having a width in the flow direction and arranged in parallel can be used.

The organic material removing apparatus 1 includes a processing liquid circulation unit that allows the processing liquid 20 to flow into the column 10 from the processing liquid inflow portion 16 and causes the processing liquid 20 in the column 10 to flow out of the processing liquid outflow portion 18.
In the present embodiment, the processing liquid circulation means includes a storage tank 24 that stores the processing liquid 20 that flows into the column 10, a pump P that flows the processing liquid 20 stored in the storage tank 24 into the column 10, and A plurality of pipes constituting the flow path of the treatment liquid 20 and a plurality of valves provided in the middle of the pipe to regulate the flow of the treatment liquid 20 are provided.
The storage tank 24 also has a function of storing the processing liquid 20 that has flowed out of the column 10.

The organic material removing apparatus 1 includes an airflow circulation unit that allows an airflow to flow into the column 10 from the processing liquid outflow portion 18 and causes the airflow in the column 10 to flow out from the processing liquid inflow portion 16.
In the present embodiment, the airflow circulation means includes a blower 23 that circulates the airflow, a plurality of pipes that form a flow path of the airflow, and a plurality of valves that are provided in the middle of the pipe and restrict the flow of the airflow.

The organic material removing apparatus 1 includes a temperature management unit that heats or cools the treatment liquid 20.
In the present embodiment, the temperature management means includes a heating heat exchanger 26 and a cooling heat exchanger 28.

The organic material removing apparatus 1 may have a moving means for accommodating the container 12 in the accommodating portion 14 of the column 10 and taking out the container 12 from the accommodating portion 14 as necessary.
For example, a chain block can be used as the moving means. Further, the moving means may further include a frame, a guide rail, a sprocket, a chain, a drive shaft, a position sensor, and the like.
The moving means moves the container 12 in the vertical direction and the horizontal direction in FIG. 1 as necessary.

The composite material applicable to the organic material removing apparatus 1 includes an inorganic material and an organic material that is decomposed by the treatment liquid (hereinafter sometimes referred to as “first organic material”). The composite material may further include an organic material that is not decomposed by the treatment liquid (hereinafter may be referred to as “second organic material”).
Specific examples of the composite material include CFRP, GFRP, a mold coil, a motor coil, a prepreg, and an aramid fiber reinforced plastic (AFRP).

  In this specification, the term “decomposes” of an organic material means that the molecular structure of the organic material changes due to the action of the treatment liquid, and the molecular weight becomes small enough to be taken into the treatment liquid. .

  Examples of the first organic material include a resin. When the first organic material is a resin, it may be a thermosetting resin or a thermoplastic resin. The resin may be in a completely cured or solidified state or may not be completely cured or solidified.

  When the first organic material is a resin, the type is not particularly limited, and conditions such as a component of the processing liquid, a processing temperature, and a processing time are selected depending on the type of the resin. From the viewpoint of ease of decomposition by the treatment liquid, a resin containing an ester bond is preferable. Examples of the resin containing an ester bond include a polyester resin (unsaturated polyester resin or saturated polyester resin), an epoxy resin containing an ester bond (an acid anhydride-cured epoxy resin, a glycidyl ester type epoxy resin, and the like). The first organic material contained in the composite material may be only one type or two or more types.

  An example of the second organic material is a thermoplastic resin. Even if the second organic material is dispersed in the first organic material, mixed with the first organic material, formed as a member different from the first organic material, etc. It may be in the state.

When the second organic material is a thermoplastic resin, the type is not particularly limited. For example, polyolefin resin, acrylic resin, polyamide resin and the like can be mentioned. The second organic material contained in the composite material may be only one type or two or more types.
Examples of the polyolefin resin include polypropylene and polyethylene.
Examples of the acrylic resin include polymethyl methacrylate and polymethyl methacrylate.
Examples of the polyamide resin include nylon 6,6, nylon 6, nylon 11, nylon 12, and the like.

  When the second organic material is a thermoplastic resin, the softening point is not particularly limited. From the viewpoint of efficiently removing the second organic material from the composite material, for example, it may be 235 ° C. or lower, and preferably 150 ° C. or lower. When the second organic material contains two or more thermoplastic resins having different softening points, the highest softening point is set as the softening point of the second organic material.

  In this embodiment, the softening point of the resin refers to a value measured according to JIS K 7206: 1999.

  Examples of the inorganic material included in the composite material include carbon, glass, ceramics, metal, and semiconductor. The state of the inorganic material in the composite material is not particularly limited, and examples thereof include a fiber shape, a cloth shape, a particle shape, a layer shape, a plate shape, and a rod shape. The inorganic material contained in the composite material may be only one type or two or more types.

The shape of the composite material is not particularly limited. For example, it may be a sheet or a molded body having an arbitrary shape. The composite material may be cut according to the desired length or size of the inorganic material to be separated.
In an embodiment, the sheet-like composite material may be cut into a substantially square shape. By making the shape of the sheet-like composite material approximately square, when the recovered inorganic material is a fiber material such as carbon fiber, the fiber lengths tend to be substantially uniform. Therefore, it is useful when the recovered fiber material is reused for producing a nonwoven fabric or the like.

  In some embodiments, the composite material includes a fibrous inorganic material (eg, carbon fiber), the first organic material includes a resin containing an ester bond (eg, an epoxy resin), and the second organic material includes an ester. A thermoplastic resin containing no bond (for example, a polyolefin resin) is included.

  The treatment liquid 20 used in the organic material removing apparatus 1 is not particularly limited as long as it can decompose the first organic material contained in the composite material. For example, when the first organic material includes a resin containing an ester bond, it is preferable to use a treatment liquid that causes the ester bond to decompose. Examples of the treatment liquid that causes decomposition of the ester bond include a treatment liquid containing an organic solvent and a decomposition catalyst.

When the treatment liquid 20 contains an organic solvent, the type of the organic solvent is not particularly limited. Examples of the organic solvent include alcohol solvents, ketone solvents, ether solvents, and amide solvents.
Examples of alcohol solvents include benzyl alcohol, 1,4-butanediol, methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, iso-butanol, tert-butanol, 1-pentanol, 2- Pentanol, 3-pentanol, 2-methyl-1-butanol, iso-pentyl alcohol, tert-pentyl alcohol, 3-methyl-2-butanol, neopentyl alcohol, 1-hexanol, 2-methyl-1-pentanol 4-methyl-2-pentanol, 2-ethyl-1-butanol, 1-heptanol, 2-heptanol, 3-heptanol, cyclohexanol, 1-methylcyclohexanol, 2-methylcyclohexanol, 3-methylcyclohexanol , 4-methylcyclohexanol, ethylene glycol, ethylene glycol monomethyl ether, ethylene glycol Monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, triethylene glycol, polyethylene glycol (molecular weight 200-400), 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, 1 1,3-butanediol, 1,4-butanediol, 2,3-butanediol, glycerin, dipropylene glycol and the like.
Examples of ketone solvents include diisobutyl ketone, methylcyclohexanone, acetone, methyl ethyl ketone, 2-pentanone, 3-pentanone, 2-hexanone, methyl isobutyl ketone, 2-heptanone, 4-heptanone, diisobutyl ketone, cyclohexanone, methylcyclohexanone, holon, isophorone. Etc.
Examples of ether solvents include dipropyl ether, dibenzyl ether, phenyl benzyl ether, diisopropyl ether, dibutyl ether, dihexyl ether, anisole, phenetole, dioxane, tetrahydrofuran, acetal, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, ethylene glycol diethyl ether, and the like. It is done.

  Of these, alcohol solvents are preferred from the standpoint of no alteration, benzyl alcohol, 1,4-butanediol and the like are more preferred, and benzyl alcohol is even more preferred. The organic solvent contained in the treatment liquid 20 may be only one type or two or more types.

  The boiling point of the treatment liquid 20 is not particularly limited, and is selected according to the type of organic material included in the composite material. That is, the boiling point of the treatment liquid 20 is selected from a temperature that is equal to or higher than the temperature at which the first organic material contained in the composite material decomposes and is equal to or higher than the softening point of the second organic material.

  When the treatment liquid 20 contains a decomposition catalyst, examples of the decomposition catalyst include phosphates and metal hydroxides. Examples of the phosphate include tripotassium phosphate, trirubium phosphate, trisodium phosphate, and trilithium phosphate. Examples of the metal hydroxide include rubidium hydroxide, potassium hydroxide, sodium hydroxide, lithium hydroxide and the like.

  Among these, metal hydroxides are preferable and sodium hydroxide is more preferable from the viewpoint of good solubility in organic solvents and high catalytic effect. The decomposition catalyst contained in the treatment liquid 20 may be only one type or two or more types. The concentration of the decomposition catalyst when the treatment liquid 20 includes a decomposition catalyst is not particularly limited. For example, the range of 0.4 mass%-20 mass% may be sufficient.

The shape of the container 12 for storing the composite material is not particularly limited, and can be appropriately selected depending on the shape of the treatment tank. When the processing tank is a rectangular parallelepiped, the shape of the container 12 is preferably a rectangular parallelepiped.
On the other hand, when the processing tank is the column 10 according to this embodiment including a cylindrical column main body, the shape of the container 12 is preferably cylindrical according to the shape of the column main body of the column 10.

The airflow used in the organic material removing apparatus is not particularly limited, but is preferably an inert gas, more preferably nitrogen or argon, and even more preferably nitrogen. The airflow may be composed of only one kind or may be composed of two or more kinds of elements.
The inert gas here refers to a gas having low reactivity, and includes a rare gas group element such as helium and nitrogen.

  2A and 2B are views showing a container 12 that can be suitably used in the present embodiment. FIG. 2A shows a front view of the container 12 and FIG. 2B shows a plan view of the container 12.

The container 12 shown in FIG. 2 is configured by integrating three cylindrical buckets 30 that are connected in the height direction of the bucket 30.
FIG. 3 is a cross-sectional view of the bucket 30. The bucket 30 includes a bottom portion 31 and a side surface portion 33 provided so as to rise from the outer peripheral portion of the bottom portion 31 in the thickness direction of the bottom portion 31. The direction in which the side surface portion 33 rises is the height direction of the bucket 30. Note that the number of buckets is not limited to three. Further, the shape is not limited to a cylindrical shape, and may be a rectangular parallelepiped or the like.
As shown in FIG. 2, the three buckets 30 are integrated by a connecting member 36 having a connecting rod 32 that passes through the three buckets 30 and a support plate 34 that supports the bottom 31 of the lowermost bucket 30. . In addition, a handle 38 is attached to the upper side of the connecting member 36 via an attachment member 40, and the container 12 can be easily moved by hooking a hook of a chain block as an example of a moving means to the handle 38. It has been made possible.
Further, a plate-like lid 42 is disposed on the upper side of the uppermost bucket 30. A hole 44 is provided at the center of the lid 42 so that the flow of the processing liquid 20 is not hindered.

In the bucket 30, a punching metal, an expanded metal, a wire mesh, or the like is attached to the frame, so that the processing liquid 20 can easily pass through the bucket 30. Note that the mesh size, the aperture ratio, and the like of the bucket 30 are appropriately set according to the shape, size, and the like of the composite material and the inorganic material.
Further, the lid 42 may be configured by a punching metal, an expanded metal, a wire net, or the like attached to the frame, in addition to the plate-shaped member provided with the hole 44.

As shown in FIG. 3, a plurality of partition plates 46, which are one of dam members for arranging the composite material along the flow direction of the processing liquid 20, may be provided inside the bucket 30. By providing the partition plate 46 inside the bucket 30, when the plate-shaped composite material is stored in the bucket 30, the surface direction of the plate-shaped composite material is set to the height direction of the bucket 30, that is, the processing liquid 20. The composite material can be arranged so as to be along the flow direction.
By causing the surface direction of the plate-shaped composite material to be along the flow direction of the processing liquid 20, the flow of the processing liquid 20 is hardly hindered. Therefore, the treatment liquid 20 comes into contact with the composite material efficiently, and the organic material can be efficiently removed from the composite material.
The dam member may be a plate-like member such as the partition plate 46, may be a rod-like member extending from a predetermined position of the bottom 31 in the height direction of the bucket 30, or other shape member The composite member is not particularly limited as long as the composite member can be disposed along the flow direction of the treatment liquid 20.

  FIG. 4 is a front view showing another example of the bucket 30. A window 50 is attached to the side surface 33 of the bucket 30 in FIG. The window portion 50 can be opened and closed outside the side surface portion 33.

  FIG. 5 is a diagram for explaining a method of storing the plate-shaped composite material 52 in the bucket 30 having the window portion 50. In FIG. 5A, the window portion 50 is opened toward the outside of the side surface portion 33, and the bucket 30 is in a state where the portion of the side surface portion 33 of the bucket 30 that faces the position where the window portion 50 is attached is grounded. In FIG. 5B, the bucket 30 is arranged with the window portion 50 closed and the bottom 31 of the bucket 30 grounded. Note that, in FIG. 5, a part of the side surface portion 33 of the bucket 30 is cut out in order to easily explain the state of the plate-like composite material 52.

As shown in FIG. 5A, the window portion 50 in the bucket 30 is opened toward the outside of the side surface portion 33, and the portion of the side surface portion 33 of the bucket 30 that faces the position where the window portion 50 is attached is The plate-shaped composite material 52 is accommodated in the bucket 30 through the window portion 50 in a grounded state. Since the portion of the side surface 33 of the bucket 30 that faces the position where the window 50 is attached is grounded, if the plate-shaped composite material 52 is stored in the bucket 30 through the window 50, the plate The composite material 52 is easily flattened in a direction along the height direction of the bucket 30.
Thereafter, the window portion 50 is closed, the bucket 30 is tilted in the direction of the arrow, and the bucket 30 is disposed so that the bottom 31 of the bucket 30 is grounded (FIG. 5B), so that the surface of the plate-shaped composite material 52 is obtained. A plate-shaped composite material 52 can be disposed in the bucket 30 such that the direction is along the height direction of the bucket 30.

  The material of the column 10 is not particularly limited, and stainless steel (SUS303, SUS316, etc.), Hastelloy (Hastelloy B, Hastelloy B-2, Hastelloy C276, etc.) having excellent corrosion resistance against the heated treatment liquid 20 is used. Can be used.

  In this embodiment, a column 10 having a cylindrical column main body and a conical conical portion formed at one end on the lower side in the vertical direction of the column main body is used as the processing tank. In addition, the shape of a processing tank is not limited to a cylindrical shape, A rectangular parallelepiped etc. may be sufficient.

  The shape of the baffle plate 22 provided at the boundary between the column main body and the conical portion in the column 10 is not particularly limited. The baffle plate 22 may be, for example, a disk-shaped plate that covers one end of the cylindrical column body on the lower side in the vertical direction and is provided with a plurality of holes. By providing the baffle plate 22 in the column 10, the flow of the processing liquid 20 is adjusted before the processing liquid 20 reaches the accommodating portion 14, and there is a biased flow toward the processing liquid 20 flowing into the column 10 from the processing liquid inflow portion 16. It can be prevented from occurring. Therefore, the treatment liquid 20 comes into contact with the composite material more efficiently, and the organic material can be more efficiently removed from the composite material.

  In order to prevent a biased flow in the processing liquid 20 in the column 10, the area of the container 14 and the area occupied by the container 12 can be as small as possible when observed from the flow direction of the processing liquid 20 in the column 10. It is preferable that they match. By matching the area of the container 14 with the area occupied by the container 12, the amount of the processing liquid 20 that flows out of the column 10 without passing through the container 12 can be reduced. Therefore, the amount of the processing liquid 20 that does not contribute to the processing of the composite material is reduced, and the organic material can be more efficiently removed from the composite material.

  It is more preferable that the area occupied by the container 12 is 80 or more when the area of the container 14 is 100 when observed from the flow direction of the treatment liquid 20 in the column 10.

  Furthermore, it is preferable that the composite material accommodated in the container 12 is arranged without being biased when observed from the flow direction of the treatment liquid 20 in the column 10. By suppressing the bias in the arrangement of the composite material stored in the container 12, it is possible to prevent a biased flow from occurring in the processing liquid 20 in the container 12. Therefore, the treatment liquid 20 comes into contact with the composite material efficiently, and the organic material can be efficiently removed from the composite material.

The temperature management means included in the organic material removing apparatus 1 includes a heating heat exchanger 26 and a cooling heat exchanger 28.
By circulating the heat transfer oil (HM) in the heat exchanger 26 for heating, the treatment liquid 20 can be heated. Further, the treatment liquid 20 can be cooled by circulating cooling water (CW) through the cooling heat exchanger 28.
Therefore, at the time of starting up the organic material removing apparatus 1 or during normal operation, the processing liquid 20 can be heated by the heat exchanger 26 for heating, and the temperature of the processing liquid 20 can be stabilized. Further, when the organic material removing apparatus 1 is lowered or in an emergency, the temperature of the processing liquid 20 can be lowered to a predetermined temperature by the cooling heat exchanger 28 and the organic material removing apparatus 1 can be safely stopped.
Note that the heating means of the treatment liquid 20 in the temperature management means is not limited to the heat exchanger 26 for heating, and a heater, microwave heating, dielectric heating, or the like can be used. Further, the cooling means of the treatment liquid 20 in the temperature management means is not limited to the cooling heat exchanger 28, and water cooling, air cooling, or the like can be used.

The processing liquid circulation means included in the organic material removing apparatus 1 controls the circulation of the processing liquid 20 by starting and stopping the pump P and opening and closing a plurality of valves provided in the middle of the piping to regulate the flow of the processing liquid 20. . The starting and stopping of the pump P and the opening and closing of the valve are controlled by control means (not shown).
The volume of the storage tank 24 is not particularly limited, and can be appropriately selected in consideration of the volume of the column 10.

  Next, in the organic material removing apparatus 1, an example of the operation of the organic material removing apparatus 1 from a state where the container 12 is not accommodated in the column 10 and the processing liquid 20 is not filled in the column 10 will be described. To do.

  First, a lid (not shown) in the column 10 is opened, and a container 12 containing a composite material containing an inorganic material and an organic material that is decomposed by the treatment liquid is received in the receiving portion 14 in the column 10 by a moving means (not shown). Thereafter, a lid (not shown) in the column 10 is closed.

  The processing liquid 20 is introduced into the storage tank 24 along the arrow R, and the processing liquid 20 is stored in the storage tank 24. The treatment liquid 20 may be an unused one, a recycled one, or a combination of an unused one and a recycled one.

Valve A is opened and valves B, C and D are closed. The pump P is driven, and the processing liquid 20 stored in the storage tank 24 passes through the valve A and the heating heat exchanger 26 and flows into the column 10 from the processing liquid inflow portion 16. When the inside of the column 10 is filled with the processing liquid 20, the excess processing liquid 20 flows out of the column 10 from the processing liquid outflow portion 18 and is stored again in the storage tank 24.
The processing liquid 20 flows into the column 10 from the processing liquid inflow portion 16, and excess processing liquid 20 flows out of the column 10 from the processing liquid outflow portion 18, so that the processing liquid 20 enters the column 10 from the processing liquid inflow portion 16. A flow of the processing liquid 20 toward the processing liquid outflow portion 18 is formed.

As the heat transfer oil (HM) is circulated through the heating heat exchanger 26, the processing liquid 20 passing through the heating heat exchanger 26 is heated. As a result, the temperature of the processing liquid 20 rises, and decomposition and removal of the organic material by the processing liquid 20 is started in the column 10. The temperature of the treatment liquid 20 is monitored by a temperature sensor (not shown), and the circulation amount of the heat transfer oil to the heat exchanger 26 for heating is adjusted according to the temperature of the treatment liquid 20. The temperature of the processing liquid 20 is adjusted by adjusting the circulation amount of the heat transfer oil to the heat exchanger 26 for heating. As the heated processing liquid 20 flows into the column 10, the decomposition of the organic material contained in the composite material is promoted, and the decomposition product of the organic material is dispersed or dissolved in the processing liquid 20, and the organic material is removed from the composite material. Removed. Moreover, the inorganic material contained in the composite material remains in the container 12.
The temperature of the treatment liquid 20 is appropriately selected depending on the type and amount of the organic material contained in the composite material. Further, the processing time by the processing liquid 20 is also appropriately selected depending on the type and amount of the organic material contained in the composite material.

  After a predetermined time has elapsed, the circulation of the heat transfer oil (HM) to the heat exchanger 26 for heating is stopped. On the other hand, cooling water (CW) is circulated through the cooling heat exchanger 28. Then, the valve A is closed and the valve B is opened. As a result, the temperature of the processing liquid 20 decreases.

After the temperature of the processing liquid 20 is lowered to a temperature safe for extraction, the circulation of the cooling water (CW) to the cooling heat exchanger 28 is stopped, and the operation of the pump P is stopped. Thereafter, the valve C and the valve E are opened, an air flow is sent from the blower 23, and flows into the column 10 from the valve E and the processing liquid flow-out portion 18. When the inside of the column 10 is filled with the airflow, the excess airflow flows out of the column 10 from the processing liquid inflow portion 16, passes through the blower 23 again, and circulates in the system.
An air flow is flowed into the column 10 from the processing liquid outflow portion 18 and an excess air flow is flowed out of the column 10 from the processing liquid inflow portion 16, so that the processing liquid inflow portion from the processing liquid outflow portion 18 into the column 10. A flow of airflow toward 16 is formed.
The treatment liquid 20 in the column 10 is discharged along the arrow S along with the flow of the air current, so that the inorganic material remaining in the container 12 is drained. In this way, a separation step of separating the inorganic material as a recycled material from the treatment liquid 20 containing the decomposition product of the organic material is performed.

  After the treatment liquid 20 in the organic material removing apparatus 1 is discharged, a lid (not shown) in the column 10 is opened, and the container 12 is taken out from the accommodating portion 14 in the column 10 by a moving means (not shown). The inorganic material remaining in the container 12 is collected and reused.

The decomposition product of the organic material is dispersed or dissolved in the treatment liquid 20 discharged from the organic material removing apparatus 1. Furthermore, a low boiling point component such as moisture may be included in the processing liquid 20. In order to reuse the treatment liquid 20, decomposition products of organic materials, low-boiling components such as moisture may be removed from the treatment liquid 20 as necessary.
The method for reusing the treatment liquid 20 is not particularly limited. For example, an evaporation process for removing a decomposition product of an organic material from the treatment liquid 20, and a low-boiling component is removed from the treatment liquid 20 obtained through the evaporation process. The treatment solution can be regenerated through a catalyst preparation step in which a catalyst is added to the distillation step to be performed and, if necessary, the treatment solution 20 obtained through the distillation step.
Note that the decomposition product of the organic material obtained in the evaporation step can be reused as an auxiliary fuel (for example, mixed with a solid fuel).

In addition, the temperature profile of the processing liquid 20 at the time of decomposing | disassembling and removing organic materials, such as the temperature of the processing liquid 20 and the processing time by the processing liquid 20, is not specifically limited, It processes at a fixed temperature for a fixed time. Alternatively, the temperature of the treatment liquid 20 may be set in at least two stages.
For example, when processing the composite material containing an inorganic material, a 1st organic material, and a 2nd organic material with the organic material removal apparatus 1, the temperature of the process liquid 20 shall be more than the softening point of a 2nd organic material. May be provided. By setting the temperature of the treatment liquid 20 to be equal to or higher than the softening point of the second organic material, the second organic material that is not decomposed by the treatment liquid 20 is softened and easily removed from the inorganic material.
When setting the temperature of the processing liquid 20 when decomposing and removing the first organic material in two stages, as an example of the temperature profile of the processing liquid 20, the temperature of the processing liquid 20 is the softening point of the second organic material. The first stage in which the first organic material is maintained at a temperature lower than the temperature at which the first organic material is decomposed by the processing liquid 20, and the temperature at which the temperature of the processing liquid 20 is decomposed by the processing liquid 20 It is preferable that the second stage maintained in the above state is included in this order. When the temperature profile of the treatment liquid 20 includes the first stage and the second stage in this order, an effect that the first organic material and the second organic material can be separated and recovered can be obtained.

  When the temperature profile of the treatment liquid 20 includes the first stage and the second stage in this order, the temperature and treatment time of the treatment liquid 20 in each stage are the types and states of the first organic material and the second organic material. It can be selected according to the amount and the like, and is not particularly limited. For example, the temperature of the treatment liquid 20 in the first stage can be in the range of 30 ° C. to 190 ° C., the treatment time in the first stage can be in the range of 1 minute to 180 minutes, The temperature of the treatment liquid 20 in the stage can be in the range of 100 ° C. to 235 ° C., and the treatment time in the second stage can be in the range of 1 minute to 720 minutes.

  In the above example, the processing liquid 20 is discharged from the organic material removing apparatus 1 after the temperature of the processing liquid 20 is lowered to a safe temperature for taking out, but the composite material contains the second organic material. In such a case, the treatment liquid 20 may be discharged in a state where the temperature is equal to or higher than the softening point of the second organic material. By discharging the treatment liquid 20 from the organic material removing apparatus 1 in a state where the temperature of the treatment liquid 20 is equal to or higher than the softening point of the second organic material, it is possible to prevent the second organic material from reattaching to the inorganic material. .

  Further, after the processing liquid 20 is discharged from the organic material removing apparatus 1, the above-described series of operations may be repeated in order to remove the organic material remaining in the composite material using the fresh processing liquid 20 again. .

  All documents, patent applications, and technical standards mentioned in this specification are to the same extent as if each individual document, patent application, and technical standard were specifically and individually stated to be incorporated by reference, Incorporated herein by reference.

Claims (5)

  A container that stores a composite material including an inorganic material and an organic material that is decomposed by the processing liquid, a storage section that stores the container, a processing liquid inflow section that is provided in the storage section, and a processing liquid that is provided in the storage section A treatment tank having an outflow part; temperature management means for heating or cooling the treatment liquid; and allowing the treatment liquid to flow into the treatment tank from the treatment liquid inflow part, and allowing the treatment liquid in the treatment tank to flow A processing liquid circulation means for flowing out from the processing liquid outflow section; and an airflow circulation means for causing an airflow to flow into the processing tank from the processing liquid outflow section, and for causing an airflow in the processing tank to flow out of the processing liquid inflow section. , Having an organic material removing device.   The organic material removing apparatus according to claim 1, wherein the processing liquid inflow portion is provided below the storage portion in the vertical direction, and the processing liquid outflow portion is provided in the vertical direction above the storage portion.   The organic material removing apparatus according to claim 1, wherein the treatment tank includes a rectifying unit that rectifies the treatment liquid between the storage part and the treatment liquid inflow part.   The organic material removing apparatus according to claim 1, wherein the container includes a weir member that arranges the composite material along a flow direction of the processing liquid.   The organic material according to any one of claims 1 to 4, wherein the gas circulation means is provided at a position where the position in the height direction of the part into which the gas flows in is higher than the position in the height direction of the part through which the gas flows out. Removal device.

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