JP2002285165A - Method and apparatus for charging waste plastic into coke oven - Google Patents

Abstract

(57) [Summary] [PROBLEMS] When charging waste plastic into a coke oven 1, it is possible to clearly separate the waste plastic layer and the coal layer in the coking chamber, and the installation can be performed at low equipment cost. Provided is a method and apparatus for charging waste plastic into a coke oven, which can be performed in a short time and can be charged into a carbonization chamber. SOLUTION: A waste plastic tank 3 is disposed on a coke oven furnace, and waste plastic stored in the waste plastic tank 3 is supplied to a charging port 13 of a carbonization chamber 2 via a pressure feeding tube 5 and a branch pipe 6.
A charging method and a charging device for waste plastic, wherein the charging method is performed by charging the waste plastic into a carbonization chamber. The take-out port 17 arranged in the pressure feed pipe 5 and the branch pipe 6 are connected at the connection part 18. In the method of charging waste plastic into the coke oven 1,
A method and an apparatus for charging waste plastic, wherein waste plastic is blown into a carbonization chamber together with blowing gas from an opening 19 of a furnace lid 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for charging waste plastic into a coke oven when coke is produced by blending waste plastic with coke raw material.

[0002]

2. Description of the Related Art Conventionally, most waste plastics discharged in large quantities as plastic industrial waste and general plastic waste are landfilled or partially incinerated. Waste plastics are not decomposed by bacteria and bacteria in the soil when landfilled, and when incinerated, generate a large amount of heat and adversely affect incinerators.In the case of waste plastics containing chlorine, the treatment of chlorine in exhaust gas is a problem. It has become. It is anticipated that the landfill disposal site will be in short supply in the future, and environmental problems are increasing, and it is desired to promote recycling of waste plastic. As a recycling method, in addition to reuse as plastic, a method of utilizing heat at the time of combustion or a gas or oil obtained by thermal decomposition as a fuel or a chemical raw material can be considered.

As a method of treating waste plastic by adding it to a coke oven, for example, JP-A-48-34901 and JP-A-8-157834 disclose coke by charging waste plastic into charged coal for producing coke. A method of making is disclosed. Most of the waste plastic is thermally decomposed due to the high temperature during the coke distillation, and becomes high calorie reduction decomposition gas such as hydrogen, methane, ethane, and propane, and is reused as an energy source by being recovered and contained in the coke oven gas. You. The remaining carbon becomes part of coke and is reused in the blast furnace.

Japanese Patent Application Laid-Open No. 9-132782 discloses a pattern of mixing waste plastic in a coke oven.
A method of charging waste plastic in the lower part of the carbonization chamber, charging coal on the waste plastic and carbonizing, first charging coal, and then charging the waste plastic in the lower part of the carbonization chamber; A method of charging coal and carbonizing the waste plastic is described.

A method for storing, transporting, and charging waste plastic charged in a coke oven is disclosed in Japanese Unexamined Patent Publication No. 9-1.
No. 32780 describes a method of providing a waste plastic storage tank for charging waste plastic into the same coal charging hopper, adjacent to a coal tower storing coal to be charged into a coal charging hopper of a coal loading vehicle. I have. Waste plastic is charged into the lower part of the coal charging hopper, coal is charged into the upper part, and then coal and waste plastic are charged from the coal charging hopper into the carbonization chamber. Further, Japanese Patent Application Laid-Open No. 4-41588 discloses that, for example, a moving vehicle running on a coke oven such as a coal-equipped vehicle is provided with two upper and lower hoppers, and waste plastic stored in an upper hopper is introduced into a lower hopper. A method is disclosed in which a lower hopper is connected to a charging inlet of a carbonization chamber, and waste plastic is charged from the lower hopper into the carbonization chamber under an airtight condition.

[0006]

The coke produced by mixing a large amount of waste plastic with coal in a coke oven has a slightly lower strength or a smaller particle size than coke produced without mixing waste plastic. May be. In such a case, it is preferable that coke having sufficient strength is used as a blast furnace charge, and coke whose strength is reduced by mixing a large amount of waste plastic is removed from the blast furnace charge. In order to keep the production yield of coke for blast furnace charging in a coke oven high, it is necessary to keep the production ratio of coke containing waste plastic and having reduced strength low.

[0007] As disclosed in Japanese Patent Application Laid-Open No. 9-132780, waste plastic is charged into a lower portion of a coal charging hopper of a coal loading vehicle, coal is charged into an upper portion of the hopper, and then the coal charging hopper is supplied from the coal charging hopper into a coking chamber. In the method of charging coal and waste plastic into the coal, a mixed region is generated at the boundary between the waste plastic and coal in the coal charging hopper, and the contents of the coal charging hopper are loaded into the carbonization chamber. Upon entering, the mixing of coal and waste plastics proceeds further. This is because waste plastic has a specific gravity lower than that of coal, and thus has an effect of causing waste plastic to float above coal. For this reason, as shown in FIG. 5B, the lower waste plastic layer 27
And the upper coal layer 26 are not clearly separated, and a mixed layer 28 in which waste plastic and coal are mixed is generated in the middle. The coke produced in the mixed layer 28 has a lower strength than the coke produced solely with coal, and thus may not have sufficient quality as a blast furnace charge. It is necessary to exclude the coke produced in such a mixed region from the blast furnace charging material. However, if the mixed layer 28 extends over a wide area, the blast furnace charging material production yield is reduced. On the other hand, coke with insufficient strength is mixed in a wide range,
Since the powder is not pulverized in the cooling process of the CDQ, the coke produced in the mixing region is insufficiently selected, and coke having insufficient strength is mixed in the blast furnace charge.

[0008] In the coal charging by the coal charging hopper, the entire content in the hopper may not remain in the carbonization chamber in one charge and may remain in the hopper. in this case,
The residue is charged to another carbonization chamber in the next charge.
In the case of a method in which waste plastic and coal are simultaneously charged by a coal charging hopper as disclosed in Japanese Patent Application Laid-Open No. Hei 9-132780, the remaining charge is mainly coal and remains at the bottom of the hopper. Waste plastics cannot be placed at the bottom of the coal charging hopper.

As disclosed in Japanese Patent Application Laid-Open No. 4-41588, by separately providing a coal charging hopper and a waste plastic charging hopper on a coal loading vehicle, waste plastic and coal are clearly separated in the carbonization chamber. Can be charged. However, when trying to dispose a waste plastic charging hopper equal to the number of charging ports on a coal-carrying car as described in the publication, a normal coke oven has 4 to 5 charging ports per carbonization chamber. Therefore, it is necessary to arrange a large number of waste plastic charging hoppers on the coal-filled vehicle, which leads to an increase in equipment costs, and it may not be possible to secure an installation space for the charging hopper on the coal-loaded vehicle. Also,
When loading waste plastic, it is necessary to connect the lower hopper of the waste plastic loading hopper to the loading inlet, and waste plastic cannot be charged in a short time.

According to the present invention, when charging the waste plastic into the coke oven, the waste plastic layer and the coal layer in the carbonization chamber can be clearly separated, and the installation can be performed at low equipment cost. It is an object of the present invention to provide a method and a device for charging waste plastic into a coke oven, which can charge the carbonization chamber in a short time.

[0011]

That is, the gist of the present invention is as follows. (1) In the method of charging the waste plastic into the coke oven 1, the waste plastic tank 3 is disposed on the coke oven furnace, and the waste plastic stored in the waste plastic tank 3 is transferred to the coking chamber 2 via the pressure feeding tube 5. A method for charging waste plastics, wherein charging is performed from a charging inlet 13 into a carbonization chamber. (2) The method for charging waste plastic according to the above (1), wherein a branch pipe 6 for distributing and charging the waste plastic fed from the waste plastic tank 3 to each of the inlets 13 is used. (3) The method for charging waste plastic according to the above (2), wherein the branch pipe 6 is installed in the coal-carrying car 11. (4) Prior to loading waste plastic into the carbonization chamber 2,
The branch pipe 6 is arranged at the charging inlet 13 of the coking chamber 2, the pumping pipe 5 is connected to the branch pipe 6, and after the waste plastic is charged, the connection between the pumping pipe 5 and the branch pipe 6 is removed, and the branch pipe 6 is removed. The method for charging waste plastic according to the above (2) or (3), wherein the method is removed from the charging inlet 13. (5) A method for charging waste plastic into the coke oven 1, wherein the waste plastic is blown into the carbonization chamber together with the blowing gas from the opening 19 of the furnace lid 10. (6) The method for charging waste plastic according to the above (5), wherein a blower 8 for blowing the waste plastic into the carbonization chamber is arranged on the support structure 7 of the extruder. (7) Waste plastic is charged into the carbonization chamber, and then coal is charged into the carbonization chamber from the coal charging hopper 12 of the coal loading vehicle 11 via the charging inlet 13. (6) The method for charging waste plastic according to any of (6).

(8) In an apparatus for charging waste plastic into the coke oven 1, a waste plastic tank 3 disposed on the coke oven furnace, a pressure feeding tube 5 for feeding waste plastic stored in the waste plastic tank 3, and a waste pipe And a branch pipe 6 for distributing the waste plastic pumped from the plastic tank 3 to each of the charging ports 13 of the carbonization chamber and feeding the waste plastic under pressure. (9) The device for charging waste plastic according to the above (8), wherein the branch pipe 6 is installed in the coal-equipped car 11. (10) The branch pipe 6 is movable between the coking chambers, and the connection between the pumping pipe 5 and the branch pipe 6 is detachable before and after charging the waste plastic into the coking chamber 2. (8)
Or the waste plastic charging device according to (9). (11) In an apparatus for charging waste plastic into the coke oven 1, a waste plastic tank 3 for storing waste plastic, a blower 8 for blowing the waste plastic stored in the waste plastic tank 3 together with blowing gas into a carbonization chamber, An opening 19 provided in the furnace lid 10 for blowing the waste plastic into the carbonization chamber. (12) The waste plastic charging device according to the above (11), wherein a blower 8 for blowing the waste plastic into the carbonization chamber is arranged on the support structure 7 of the extruder.

In the above (1) and (8) of the present invention, the waste plastic stored in the waste plastic tank 3 is fed into the pressure feeding tube 5.
And is charged into the coking chamber from the charging inlet 13 of the coking chamber 2. For this reason, the charging of the waste plastic into the carbonization chamber 2 and the charging of the coal can be performed separately.
As shown in the figure, the thickness of the mixed layer 28 between the waste plastic layer 27 and the coal layer 26 charged in the carbonization chamber 2 can be reduced, and the waste plastic layer 27 and the coal layer 26 can be clearly separated. it can. Further, in the above (2) and (8), instead of having a waste plastic storage tank at each charging port of the carbonization chamber 2, waste plastic pumped from the waste plastic tank 3 is distributed and charged to each charging port. The use of the branch pipe 6 eliminates the necessity of installing a large number of waste plastic storage tanks, enables installation at low cost of equipment, and allows the charging into the carbonization chamber to be performed in a short time. Furthermore, according to the present invention,
Even if the pre-charged coal remains in the coal charging hopper, the waste plastic and the coal can be charged in layers in the carbonization chamber without any problem.

In the above (1) and (8) of the present invention, the waste plastic tank 3 is placed on a coke oven. This makes it possible to load the waste plastic into each of the carbonization chambers at the required timing without time delay.

In the above (5) and (11) of the present invention,
Waste plastic is blown into the carbonization chamber together with the blown gas from the opening 19 of the furnace lid 10. Therefore, the above (1)
(8) Similarly, the charging of the waste plastic into the carbonization chamber and the charging of the coal can be performed separately, so that the waste plastic layer and the coal layer charged into the carbonization chamber can be clearly separated. it can. Further, since the waste plastic is collectively blown into the coking chamber from the opening 19 of the furnace lid 10, compared with the case where waste plastic is charged from each charging port of the coking chamber, the waste plastic is collectively loaded with a single blowing device. You can enter.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The above (1) to (4) and (8) to
The invention of (10) will be described with reference to FIGS. Figure 1
As shown in (1), the waste plastic tank 3 for storing waste plastic can be used as a pressure vessel to pressurize the inside of the tank, and the waste plastic cut out from the bottom of the waste plastic tank at a constant speed can be directly supplied to the pressure feeding tube 5. However, the waste plastic tank 3 generally has a large capacity, and it is generally not advisable to use this as an expensive pressure vessel. Usually Figure 3
A pressurized bottle 22 as a pressure vessel is prepared below the waste plastic tank 3 as described above, and one-time waste plastic to be charged into the carbonization chamber 2 is cut out from the waste plastic tank 3 and charged into the pressurized bin 22. Next, it is preferable that after the pressurizing bin 22 is pressurized, the waste plastic in the pressurizing bin is supplied to the pressure feeding tube 5 and pressure-fed.

In the pressure feeding of the waste plastic using the pressurizing bin 22, the upper shut-off valve 24 on the pressurizing bin is opened,
The waste plastic is cut out using a fixed amount cutout device such as a rotary valve 23 provided at the bottom of the waste plastic tank 3, and is put into the pressurized bottle 22 via the upper shutoff valve 24. When the injection of a predetermined amount of waste plastic is completed, the upper shut-off valve 24 is closed, the inside of the pressurizing bin is pressurized using a compressor or the like, and the lower shut-off valve 25 provided at the lower part of the pressurizing bin is opened, and the lower shut-off valve 25 is opened. The waste plastic is pumped through the pumping tube 5 connected to the pipe.

Each coking chamber 2 of the coke oven 1 has 4
There are up to five charging ports 13 through which coal and waste plastic are charged into the carbonization chamber. In the above (2) and (8) of the present invention, as shown in FIG. 1, the number of branch pipes 15 equal to the number of loading ports 13 is equalized by the number of the inlets 13 through the branch pipes 6.
The waste plastic is charged into the charging inlet from the tip of each branch pipe 15.

The charging of coal into each of the coking chambers 2 is performed by a coal loading car 11 movably installed on a coke oven furnace. The coal is received by the coal loading hopper 12 on the coal loading car 11, and then the coal loading car 1 is moved to the coking chamber position where coal is to be charged.
1 and the coal is charged from the charging inlet 13 of the coking chamber 2. Since the coke oven 1 usually has the coal-equipped car 11 having such a function, in the above (3) and (9) of the present invention, as shown in FIG.
A branch pipe 6 for charging from 3 is placed on a coal-charging car 11,
Pumping of waste plastic is carried out on the coke truck 11 on the coke oven furnace.
It is preferable to feed to

Since the charcoal truck 11 moves on the rail 20 on the coke oven, the pumping tube 5 for pumping the waste plastic onto the charcoal truck also needs to cope with the movement of the charcoal truck 11. In the above (4) and (10) of the present invention, prior to charging the waste plastic into the carbonization chamber, the charging port 1 of the carbonization chamber is used.
The branch pipe 15 of the branch pipe 6 is installed in 3, and the outlet 17 provided in the pressure feed pipe 5 and the branch pipe 6 are connected by the connecting portion 18. As shown in FIG. 1A, the pressure feed pipe 5 is provided with a plurality of outlets 17 corresponding to the respective carbonization chambers. When the loading of the waste plastic is completed, the connection between the outlet 17 of the pressure feed pipe 5 and the branch pipe 6 is disconnected, and the branch pipe 6 is connected to the loading port 13.
Remove from The same applies to the case where the branch pipe 6 is not installed on a coal-carrying car.

In the present invention, the pumping tube connected to the coal-carrying vehicle 11 is more preferably a cable bear (registered trademark). The cable bear can cope with the movement of the coal truck 11 while maintaining a certain shape. Further, the branch pipe on the coal-equipped car and the cable bear can be fixedly connected.

If there is no room for disposing the cable bearer on the coke oven, a coal drum 11 is moved while using a take-up drum while winding or unwinding the pressure feeding tube using the flexible tube. be able to.

The pattern of charging the waste plastic into the carbonization chamber includes a pattern in which the waste plastic is charged into the bottom of the carbonization chamber, a pattern in which coal is charged below the waste plastic at the bottom of the carbonization chamber, and an upper part of the carbonization chamber. It is necessary to cope with the pattern of loading waste plastic into the equipment. In the present invention, any of the above charging patterns can be realized by patterning coal cutting and waste plastic blowing from a coal charging hopper on a coal loading vehicle. Preferably, waste plastic is charged into the coking chamber as in (7) above, and then coal is charged into the coking chamber from the coal charging hopper of the coal loading vehicle via the charging inlet.

It is also possible to use a specific carbonization chamber as a kiln dedicated to waste plastic processing, and charge only the waste plastic into this carbonization chamber or mix the waste plastic mainly with coal. Also in this case, the waste plastic charging apparatus of the present invention can be used for charging the specific carbonization chamber mainly with waste plastic.

The optimum conditions for pressurizing and pumping waste plastics cannot be determined unequivocally because they vary depending on the shape and density of waste plastics in the pretreatment of waste plastics. Average bulk density of waste plastic is 0.3 to
n / m ³ and average particle size of about 10 mm, pressurizing pressure 2k
g / cm ² , weight ratio between waste plastic and gas (solid-gas ratio)
Pressure can be stably fed at about 1 to 3. It is preferable to use air economically as the pumping gas. It is preferable to use nitrogen gas as the pumping gas because combustion of waste plastic or the like near the nozzle for blowing waste plastic into the charging port can be prevented.

When the waste plastic is blown into the carbonization chamber, the carrier gas is naturally blown into the carbonization chamber. The carbonization chamber of the coke oven has a riser for treating the generated coke oven gas, and a safe water ejector. When blowing waste plastic and carrier gas into the coking chamber, the gas in the coking chamber can be sucked and the carrier gas can be exhausted by activating this water ejector. There is no need to provide separate dust collection equipment.

The waste plastic is loaded and carried on a waste plastic transport vehicle such as a truck. The loaded waste plastic is transferred to a waste plastic tank 3 on a coke oven furnace.
Need to be sent to The waste plastic discharged from the waste plastic transport vehicle is received by the receiving hopper. It is preferable to adopt a pumping method using a pumping tube also for the transfer from the receiving hopper to the waste plastic tank 3 on the coke oven furnace.

The inventions (5), (6), (11) and (12) will be described in detail with reference to FIG. The waste plastic is charged into the coking chamber by blowing from the opening 19 of the furnace lid 10 arranged on the extruder side of the coking chamber. Since the length of the carbonization chamber is usually about 15 m, the higher the position of the opening 19 provided in the furnace lid 10, the better the uniform charging of the waste plastic to the furnace end opposite to the extruder. The upper part of the furnace lid may be provided with an openable / closable opening called a small lid. By opening this small lid, an opening 19 for blowing waste plastic is provided.
It can be.

The waste plastic is blown into the carbonization chamber together with the carrier gas. It is preferable to use air as the carrier gas because it is inexpensive. While the air is being pumped by the blower 8, the rotary valve 23 is removed from the waste plastic tank 3.
The waste plastic is quantitatively cut out by the above method and the waste plastic is conveyed to the compressed air. A centrifugal blower can be used as the blower 8.

In order to distribute the waste plastic over the entire length of the carbonization chamber 2, it is effective to make the initial velocity of the waste plastic in the opening 19 as fast as possible and to delay the start of the drop of the waste plastic in the carbonization chamber as much as possible. is there.
In order to secure the initial velocity of the waste plastic in the opening 19, the discharge pressure of the carrier gas by the blower 8 is set to 200.
mmH ₂ O is preferable. In addition, it is effective to open the charging port 13 at the upper part of the carbonization chamber and to collect dust from the upper part of the charging port when blowing the waste plastic. As a result, an upward airflow is formed in the carbonization chamber, and the falling speed of the waste plastic in the carbonization chamber can be reduced, and as a result, the waste plastic can be sprayed over the entire length of the carbonization chamber.

Since the air used as the carrier gas contains oxygen, the waste plastic blown in the high-temperature carbonization chamber may burn. Also, the carbon adhering to the furnace wall of the carbonization chamber is burned by the carrier air. Here, by using a gas such as nitrogen instead of air as the carrier gas, combustion of the waste plastic can be prevented.

The coke oven has a large number of coking chambers 2 as shown in FIG. 1 (a), and the waste plastic charging apparatus of the present invention is quickly moved to the target coking chamber 2 for charging. Need to be implemented. Therefore, in the present invention, FIG.
As described in (6) and (12) above, it is preferable to dispose a blower 8 for blowing waste plastic into the carbonization chamber on the support structure 7 of the extruder. The extruder is for extruding the coke that has been completely carbonized from the carbonization chamber. In order to perform extrusion from a large number of carbonization chambers, the support mechanism 7 of the extruder is provided movably on the rail 20, It can move between the coking chambers. Therefore, by disposing the blower on the support structure of the extruder, the waste plastic can be blown into any carbonization chamber 2 by moving the support structure 7.

The waste plastic tank 3 for storing waste plastic to be blown into the carbonization chamber may be provided on a support mechanism of the extruder, or may be fixed and installed at a predetermined position on a coke oven furnace. Or in another location near the coke oven. Apart from a waste plastic tank for storing a large amount of waste plastic,
It is also possible to provide a tank 9 for storing around one waste plastic charged in one carbonization chamber. The transfer of the waste plastic from the waste plastic tank 3 to the tank 9 preferably employs a pressure feed system. It is preferable to dispose the tank 9 directly above the air flow discharged from the blower 8 in that a fixed amount of waste plastic is cut out from the tank 9 and conveyed to the discharge air flow, which is simple in equipment.

Since the support mechanism 7 of the extruder moves between the coking chambers, the supply of the waste plastic from a fixed position other than the extruder to the extruder is not limited to the branch pipe on the coal-equipped car in the invention of (1). The same mechanism as that used to supply the waste plastic can be adopted.

When charging waste plastic into the carbonization chamber according to the present invention (1) to (12), for example, in the case of coal alone, in a carbonization chamber for charging 20 tons of coal, waste plastic is placed under the carbonization chamber. Is charged, and 19 tons of coal are charged on the top. Thereafter, carbonization is performed to produce coke. The coke extruded from the coking chamber is CD
In the process of being charged into the Q facility (coke dry fire extinguishing facility) and cooled, coke having low strength becomes fine coke and is collected by the dust collecting facility. The recovered coke breeze is used as a raw material for sintering.

[0036]

According to the present invention, the waste plastic stored in the waste plastic tank is charged into the coking chamber from the charging port of the coking chamber via the pressure feed pipe. Since the charging and the charging can be performed separately, it is possible to clearly separate the waste plastic layer and the coal layer charged in the carbonization chamber. In addition, since a branch pipe is used for distributing and charging the waste plastic pumped from the waste plastic tank to each loading port, it is not necessary to install a large number of waste plastic storage tanks, and the equipment can be installed at low equipment cost. The charging into the carbonization chamber can be performed in a short time.
Furthermore, according to the present invention, even if the pre-charged coal remains in the coal charging hopper, the waste plastic and the coal can be charged in layers in the carbonization chamber without any problem.

Since the waste plastic tank is arranged on the coke oven, it becomes possible to charge the waste plastic to each carbonization chamber at a required timing without delay.

According to the present invention, since waste plastic is blown into the carbonization chamber together with the blowing gas from the opening of the furnace lid, charging of waste plastic into the carbonization chamber and charging of coal can be performed separately. It is possible to clearly separate the waste plastic layer and the coal layer charged in the coking chamber. In addition, since the waste plastics are blown into the coking chamber from the opening of the furnace lid at a time, waste plastics are collectively loaded with a single blowing device as compared with the case where waste plastics are loaded from each charging port of the carbonization chamber. be able to.

[Brief description of the drawings]

FIG. 1 is a view showing a waste plastic charging device of the present invention, wherein (a) is a perspective view including a cross section of a carbonization chamber, and (b) is a side cross sectional view.

FIG. 2 is a side sectional view showing the waste plastic charging device of the present invention.

FIG. 3 is a partial view showing a waste plastic charging device of the present invention.

FIG. 4 is a side sectional view showing a waste plastic charging device of the present invention.

FIGS. 5A and 5B are diagrams showing charging states of coal and waste plastic in a carbonization chamber, wherein FIG. 5A is an example of the present invention and FIG. 5B is a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coke oven 2 Carbonization chamber 3 Waste plastic tank 4 Combustion chamber 5 Pumping tube 6 Branch pipe 7 Extruder support structure 8 Blower 9 Tank 10 Furnace lid 11 Coal truck 12 Coal charging hopper 13 Loading inlet 15 Branch pipe 16 Nozzle 17 Take out Mouth 18 Connection part 19 Opening (small lid) 20 Rail 21 Coal 22 Pressure bin 23 Rotary valve 24 Upper shut-off valve 25 Lower shut-off valve 26 Coal layer 27 Waste plastic layer 28 Mixed layer

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4H012 HB02 HB09 LA02 MA00

Claims (12)

[Claims] In a method of charging waste plastic into a coke oven, a waste plastic tank is disposed on the coke oven furnace, and the waste plastic stored in the waste plastic tank is charged into a coking chamber through a pressure feeding tube. A method for charging waste plastic, which is charged into a carbonization chamber from the beginning. 2. The method for charging waste plastic according to claim 1, wherein a branch pipe for distributing and charging the waste plastic pumped from the waste plastic tank to each charging port is used. 3. The method for charging waste plastic according to claim 2, wherein the branch pipe is installed in a coal-carrying car. 4. Prior to loading the waste plastic into the carbonization chamber, the branch pipe is disposed at a charging inlet of the carbonization chamber, the pumping pipe and the branch pipe are connected, and after loading the waste plastic, the branch pipe is connected to the branch pipe. The method for charging waste plastic according to claim 2 or 3, wherein the connection between the pumping pipe and the branch pipe is removed, and the branch pipe is removed from the charging port. 5. A method for charging waste plastic into a coke oven, wherein the waste plastic is blown into a carbonization chamber together with blowing gas from an opening of a furnace lid. 6. The method for charging waste plastic according to claim 5, wherein a blower for blowing the waste plastic into the carbonization chamber is arranged on a support structure of the extruder. 7. The method according to claim 1, wherein waste plastic is charged into the coking chamber, and then coal is charged into the coking chamber from a coal charging hopper of the coal loading vehicle via a charging inlet.
7. The method for charging waste plastic according to any one of claims 6 to 6. 8. An apparatus for charging waste plastic into a coke oven, comprising: a waste plastic tank disposed on the coke oven furnace; a pressure feed pipe for pressure-feeding waste plastic stored in the waste plastic tank; A branch pipe for distributing the pumped waste plastic to each of the inlets of the carbonization chamber and feeding the waste plastic under pressure. 9. The waste plastic charging apparatus according to claim 8, wherein the branch pipe is installed in a coal-carrying vehicle. 10. The branch pipe is movable between each carbonization chamber, and the connection between the pumping pipe and the branch pipe is detachable before and after loading waste plastic into the carbonization chamber. Item 10. An apparatus for charging waste plastic according to Item 8 or 9. 11. An apparatus for charging waste plastic into a coke oven, comprising: a waste plastic tank for storing waste plastic; a blower for blowing waste plastic stored in the waste plastic tank together with blowing gas into a carbonization chamber; An opening provided in a furnace lid for blowing plastic into the carbonization chamber. 12. The waste plastic charging device according to claim 11, wherein a blower for blowing the waste plastic into the carbonization chamber is arranged on a support structure of the extruder.