JP3523099B2 - Waste plastic continuous treatment equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous processing apparatus for recovering oil from discarded plastic (hereinafter referred to as waste plastic), and particularly efficient recovery of fuel oil from waste plastic containing a large amount of vinyl chloride. For continuous processing equipment for waste plastics.

[0002]

2. Description of the Related Art Waste plastics are one of the wastes from industry and households. In the treatment of this waste plastic, particularly waste plastic containing vinyl chloride as a main component, solid matter containing hydrocarbon as a main component obtained after extraction of chlorine component of vinyl chloride is recycled as fuel. .

At present, the method of recycling as a solid fuel is hardly used as a fuel, and although a large amount of solid fuel is handed over to a waste treatment company and a part thereof is used for landfill, etc., They are facing the problem of being unable to dispose of it due to lack of treatment facilities, and some being illegally dumped in the wilderness.

On the other hand, there has been proposed a method for recycling waste plastic containing a large amount of vinyl chloride as fuel oil. This method cuts waste plastic into small pieces by pretreatment, melts these small pieces, then introduces them into a thermal decomposition tank and thermally decomposes them at a high temperature (about 500 ° C) to generate oil gas containing hydrocarbon as a main component, This oil gas is cooled to obtain oil.

According to this method, the fuel oil has many advantages as compared with the solid fuel, such as saving a large space for storage and being easy to handle as a fuel. It is considered to be one of the promising options for recycling.

[0006]

A waste plastic treatment apparatus for treating waste plastic to obtain fuel oil is a so-called batch treatment system for treating a quantity of waste plastic determined by the treatment method, and a continuous waste plastic treatment. , Which is a so-called continuous processing method. The batch processing method is used in a small-scale waste plastic victory device and has been put into practical use in some areas, but the viscosity of the molten waste plastic is extremely high, making it difficult to discharge the molten plastic from the storage tank. Since the thermal conductivity is low, there is a drawback that it takes a long time to cool and high efficiency cannot be maintained.

On the other hand, the continuous processing method is suitable for a large-scale waste plastic processing apparatus and is expected to maintain high efficiency. However, there are some unsolved problems and they have not been put to practical use. For example, the high temperature residue flowing out from the outlet of the thermal decomposition tank contains hydrocarbons that cannot be completely decomposed, and some of it may become oil gas immediately after it goes out of the tank and flow out to the environment. is there.
Oil gas is highly flammable by nature, and there is a risk of causing fire, explosion, etc., if oil gas that has flowed out to the environment at high temperature stays locally.

Further, the flow of the residue flowing through the outlet of the thermal decomposition tank is not always stable, and when the fluidity is lost beyond the limit, the residue is clogged at the outlet of the thermal decomposition tank and the thermal decomposition tank is operated. You may be forced to stop.

Therefore, the object of the present invention is to prevent the oil gas discharged from the high temperature residue flowing out from the outlet of the thermal decomposition tank from flowing out into the environment, and to cause the clogging of the residue at the outlet of the thermal decomposition tank. Another object of the present invention is to provide a continuous processing apparatus for waste plastic that avoids the above problem.

[0010]

In order to achieve the above object, the invention according to claim 1 is a thermal decomposition tank for thermally decomposing molten plastic, and a residue which is provided in communication with the thermal decomposition tank and flows inside. Further, there is provided a residue recovery chamber having a cooling means for blowing spray water to cool the residue, and a residue transport device for transporting the residue outside the room in the residue recovery chamber.

In the waste plastic continuous treatment apparatus having the above structure, low temperature spray water is sprayed on the residue immediately after it leaves the thermal decomposition tank to cool it, so that the hydrocarbon contained in the residue is released as oil gas. It can be suppressed, and it becomes possible to prevent the oil gas from flowing out to the environment and locally staying.

Further, by thermally decomposing so that the undecomposed hydrocarbon residue is 0.7 to 1.5 with respect to the carbon residue 1 in a weight ratio, it is possible to avoid loss of fluidity of the residue. It becomes possible to prevent clogging of residue.

Further, the invention according to claim 2 is a first decomposition tank for thermally decomposing molten plastic, and a first tank provided in communication with the thermal decomposition tank for cooling the residue with low temperature water stored therein. And a second tank for receiving the high temperature water sent from the first tank through the duct, and the second tank and the first tank are provided in communication with each other, and the high temperature extracted from the inside of the second tank Circulation system including a heat exchanger for cooling the water in the first tank and a circulation pump for returning the cooled low-temperature water to the first tank, and residue recovery means for recovering the residue carried in the water in the duct. And with.

In the waste plastic continuous processing apparatus having the above structure, the residue and the low temperature water are brought into direct contact with each other to cool immediately after leaving the thermal decomposition tank, so that the hydrocarbon contained in the residue is released as oil gas. Can be suppressed,
It is possible to prevent oil gas from flowing out to the environment and locally staying.

Loss of fluidity of the residue can be avoided and clogging of the residue can be prevented.

Further, the invention according to claim 3 is a thermal decomposition tank for thermally decomposing molten plastic, and is provided in communication with this thermal decomposition tank. The residue is filled with an inert gas filling the interior under an inert gas atmosphere. In addition, it is provided with a cooling and conveying means which is indirectly cooled by water and is conveyed to the outside of the container through a wiggle-shaped conveying path.

In the waste plastic continuous processing apparatus having the above structure, the residue immediately after leaving the thermal decomposition tank is cooled by the low-temperature cooling water, so that the hydrocarbon contained in the residue is prevented from being released as oil gas. It is possible to prevent the oil gas from flowing out to the environment and staying locally.

Further, it is possible to avoid loss of fluidity of the residue, and it is possible to prevent clogging of the residue at the outlet of the thermal decomposition tank 1.

Further, the invention according to claim 4 is characterized in that an extruding transfer means for forcibly transferring the residue from the thermal decomposition tank is provided.

In the waste plastic continuous processing apparatus having the above structure, since the residue is forced out by the extrusion transfer means, it is possible to eliminate the retention or clogging of the residue at the outlet of the thermal decomposition tank.

Further, the invention according to claim 5 is characterized in that a heating furnace for heating the residue from the thermal decomposition tank to dry it is provided.

In the waste plastic continuous processing apparatus having the above structure, a larger amount of fuel can be recovered from the residue by the dry distillation operation in the heating furnace, and the oil recovery rate can be further improved.

[0023]

[0024]

[0025]

[0026]

[0027]

[0028]

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, the waste plastic continuous processing apparatus comprises a thermal decomposition tank 1 for receiving molten plastic through an upper opening (not shown). The thermal decomposition tank 1 is surrounded by an adiabatic partition wall 2 except the upper portion thereof, and the inside of the thermal decomposition tank 1 is kept at a high temperature by the flame of the burner 3 during operation. An oil gas system 4 is connected to the upper part of the thermal decomposition tank 1 for guiding an oil gas produced by thermal decomposition of hydrocarbons contained in the molten plastic to a condenser (not shown), and a residue of the molten plastic is connected to the lower part. Is connected to the residue system 5.

Further, from the outlet of the thermal decomposition tank 1 to the residue system 5
A residue recovery chamber 6 is provided for receiving the residue of molten plastic flowing therethrough. The residue recovery chamber 6 has a closed space in which each surface is surrounded by a partition plate. Further, a belt conveyor 8 is provided in the residue recovery chamber 6. The belt conveyor 8 comprises two sets of rollers 9 and a belt 10 wound around the rollers 9. At the end of the belt conveyor 8, a bucket 11 for receiving the carried residue is provided.

Further, spray water systems 13a and 13b are provided so as to communicate with the upper space in the residue recovery chamber 6. The spray water systems 13a and 13b are nozzles 14 for blowing water to the residue dropped on the belt conveyor 8, respectively.
Is equipped with. Further, the residue recovery chamber 6 is connected to a steam system 15 for guiding the steam generated there to a heat exchanger (not shown). A steam valve 16 is interposed in the steam system 15. In the figure, reference numeral 12 is a belt conveyor 8
It shows a recovery valve that is opened when the residue is sent to.

The present embodiment has the above-mentioned structure, and the molten plastic is supplied to the thermal decomposition tank 1 during the operation of the waste plastic continuous processing apparatus and heated to a higher temperature in the tank kept at a high temperature by the burner 3. To be done. By this heating, the molten plastic is thermally decomposed, and oil gas consisting of hydrocarbon is generated.

At this time, fluidity is lost when the residue flowing out from the tank after thermal decomposition is thermally decomposed so that the undecomposed hydrocarbon residue is 0.7 to 1.5 with respect to the carbon residue 1 in a weight ratio. Not desirable.

The oil gas generated by the thermal decomposition reaches the condenser (not shown) through the oil gas system 4, is cooled there to be in a liquid state, and is collected in an oil container (not shown).

On the other hand, the residue of the molten plastic falls to the bottom of the thermal decomposition tank 1, passes through the recovery valve 12 and drops onto the belt 10 of the belt conveyor 8 in the residue recovery chamber 6. When the high temperature residue drops, an operation signal is output and the spray water main valve (not shown) is fully opened to open the spray water systems 13a and 13b.
The low temperature water flowing through the nozzles blows out from each nozzle 14. This spray water directly contacts the residue that has fallen on the belt 10 of the belt conveyor 8, and the hot residue is cooled.

While the residue is cooled, water evaporates and steam is generated. This steam flows through the steam system 15 with the steam valve 16 fully open to the heat exchanger where it is cooled and condensed. The water treatment device can be omitted if the total amount of spray water is determined to contribute to the cooling by the latent heat of vaporization.

Thereafter, the residue is gradually solidified while being conveyed on the belt conveyor 8 and drops into the bucket 11 through the outlet of the residue recovery chamber 6. The residue obtained by this solidification contains a large amount of hydrocarbons and can be used as a solid fuel.

Thus, the high temperature residue immediately after leaving the thermal decomposition tank 1 can be cooled by the low temperature spray water,
It is possible to prevent oil and gas from being released from the hot residue for a long time.

As described above, according to this embodiment, low temperature spray water is sprayed on the residue immediately after leaving the thermal decomposition tank 1 to cool it, so that the hydrocarbon contained in the residue is released as an oil gas. It is possible to prevent the oil and gas from flowing out to the environment and locally staying.

Further, by thermally decomposing so that the undecomposed hydrocarbon residue is 0.7 to 1.5 with respect to the carbon residue 1 in a weight ratio, it is possible to avoid loss of fluidity of the residue. It is possible to prevent clogging of residues at the outlet of the thermal decomposition tank 1.

Further, different embodiments of the present invention will be described. In FIG. 2, the waste plastic continuous treatment device is a first tank 1 connected to a thermal decomposition tank 1 via a residue system 5.
7 and a second tank 19 connected to the first tank 17 via a duct 18. The first and second tanks 17 and 19 are hermetically-sealed containers and always store water therein. In addition, the first tank 17 and the second
Circulation system 2 for circulating water between the tank 19 and
0 is connected. A circulation pump 2 is provided in this circulation path.
1 and a heat exchanger 22 are provided.

Further, the duct 18 is arranged so as to be inclined by an angle θ so that the first tank 17 side becomes higher. Further, near the outlet of the duct 18, there is provided a residue collecting means, which will be described in detail later, such as a collecting plate 24 and an inclined plate 25 which rotate about a pivot 23. In the figure, reference numerals 26 and 27 represent an outlet valve and an inlet valve, respectively.

FIG. 3 shows details of the recovery plate 24 and the inclined plate 25. The collecting plate 24 is formed in a lattice shape, and water flows through the eyes of the collecting plate 24. Inclined plate 25
Is properly tilted on the plane of the collecting plate 24,
The residue carried in the duct 18 can be captured.

The present embodiment has the above-described structure, and during operation, high temperature residue drops from the thermal decomposition tank 1 through the recovery valve 12 into the first tank 17. This residue contacts the low temperature water stored in the first tank 17 and is cooled. The residue is carried on the water flowing through the further inclined duct 18 toward the outlet, and is caught by the inclined plate 25 when reaching the grid-shaped recovery plate 24. During this transportation, the residue is cooled by contact with low temperature water.

Thereafter, the trapped residue is collected in a bucket or the like at the position shown in the figure (shown by the chain double-dashed line) by rotating the collecting plate 24 about the pivot 23.

On the other hand, the water that has passed through the recovery plate 24 flows into the second tank 19 and drops to the bottom of it. This water is extracted by the circulation pump 21, flows into the heat exchanger 22, and is cooled by the cooling water. The water having the lowered temperature flows into the first tank 17 and is stored there.

Thus, the high temperature residue immediately after leaving the thermal decomposition tank 1 can be cooled by the water kept at a low temperature,
It is possible to prevent oil and gas from being released from the hot residue for a long time.

According to the present embodiment, the residue immediately after leaving the thermal decomposition tank 1 is cooled by spraying low-temperature spray water, so that the hydrocarbon contained in the residue is prevented from being released as oil gas. Therefore, it is possible to prevent the oil gas from flowing out to the environment and locally staying.

Further, it is possible to avoid loss of fluidity of the residue, and it is possible to prevent clogging of the residue at the outlet of the thermal decomposition tank 1.

Further, different embodiments of the present invention will be described. In FIG. 4, the waste plastic continuous processing apparatus is equipped with a cooling and conveying means 28 having a spiral conveying path connected to the thermal decomposition tank 1 via the residue system 5. The cooling / conveying means 28 has a screw 30 directly connected to a motor 29, and the residue is conveyed from the inlet to the outlet by the rotation of the screw 30.

Further, the cooling transfer means 28 has a jacket 31 arranged outside the heat transfer wall thereof. Further, the cooling and conveying means 28 is connected to an inert gas system 7 for introducing an inert gas, such as nitrogen gas, into the container. Further, a bucket 11 for receiving the carried residue is provided at the outlet of the cooling transfer means 28.

On the other hand, a circulation system 20 for circulating water is connected to the jacket 31. A circulation pump 21 and a heat exchanger 22 are provided in this circulation path.

The present embodiment has the above-mentioned configuration, and during operation, the high temperature residue drops from the thermal decomposition tank 1 through the recovery valve 12 into the cooling and conveying means 28. The residue is carried while being stirred by the screw 30 rotating at a low speed, and falls into the bucket 11 from the outlet of the cooling and carrying means 28. During this period, the residue is cooled while coming into contact with low-temperature water flowing in the jacket 31 while being conveyed on the screw 30, and gradually solidifies to reach the outlet of the cooling and conveying means 28.

During the transportation, part of the hydrocarbon contained in the high temperature residue becomes oil gas. The inside of the cooling and conveying means 28 is filled with nitrogen gas, and the oil gas diffuses into the nitrogen gas. This can prevent the highly flammable oil and gas from flowing out to the environment and locally staying.

On the other hand, the water flowing in the jacket 31 takes heat from the residue and rises in temperature, and when it reaches the outlet of the jacket 31, a part of it is evaporated to become a gas-liquid two-phase flow. This two-phase flow passes through the circulation system 20 and is recovered and condensed in a condenser (not shown). After this, the condensate is extracted by the circulation pump 21 and flows to the heat exchanger 22, where it is cooled by the low-temperature cooling water, becomes low-temperature water, and is supplied again to the jacket 31 for circulation.

Although the screw 30 of the present embodiment is described as having no drive shaft directly connected to the motor 29, a screw may be provided on the drive shaft directly connected to the motor 29.

According to the present embodiment, since the residue immediately after leaving the thermal decomposition tank 1 is cooled with low-temperature cooling water, it is possible to prevent the hydrocarbon contained in the residue from being released as oil gas. Therefore, it becomes possible to prevent the oil gas from flowing out to the environment and locally staying.

Further, it is possible to avoid loss of fluidity of the residue, and it is possible to prevent clogging of the residue at the outlet of the thermal decomposition tank 1.

Further, different embodiments of the present invention will be described. In FIG. 5, extrusion transfer means 32 is provided at the outlet of the thermal decomposition tank 1. This extrusion transfer means 32
Is composed of an extruder 35 having a built-in piston 34 for pushing out residues in a straight line via a three-way valve 33, and a transfer pipe 36 for receiving the residues and guiding them to a predetermined place.

The present embodiment has the above-described structure, and when the high temperature residue flows from the thermal decomposition tank 1 to the three-way valve 33 during operation, the three-way valve 33 is switched so that the tip of the piston 34 of the extruder 35 remains as the residue. The fluid pressure is applied to the back surface of the piston 34 in the state of being directed to the. When the fluid pressure acts, the piston 34 moves from the left side to the right side in the drawing, and the piston 34
The residue that has been pushed by and flows into the three-way valve 33 is transferred to the transfer pipe 36.

In this extrusion transfer means 32, it is possible to eliminate clogging of the residue, which is likely to occur especially at the outlet of the thermal decomposition tank 1. That is, although the molten residue has a relatively high fluidity, if the fluidity of the residue decreases for some reason, the flow of the residue is delayed at the outlet of the thermal decomposition tank 1. Even in such a case, the piston 34 of the extruder 35
By forcibly pushing out the residue with, the stagnation or clogging of the residue there can be eliminated.

Further, if the amount of residue flowing through the three-way valve 33 is controlled by appropriately maintaining the switching timing of the three-way valve 33, the number of operations of the extruder 35 is integrated to obtain an approximate amount of discharged residue. It is also possible.

The extrusion transfer means 32 of the present embodiment is the residue recovery chamber 6 (see FIG. 1) having the above-mentioned cooling means, the first tank 17 (see FIG. 2), and the cooling transfer means 28 (see FIG. 4).
See) can be used in combination.

According to the present embodiment, the residue is forcibly pushed out by the pushing and transferring means, so that the thermal decomposition tank 1
It is possible to eliminate the clogging of the residue at the outlet of the.

Further, different embodiments of the present invention will be described. In FIG. 6, the thermal decomposition tank 1 is an extrusion transfer means 3
Equipped with 2. The push-out transfer means 32 is a three-way valve 3.
It is composed of an extrusion 35 and a transfer pipe 36 which are arranged in a straight line through the line 3. Further, a heating furnace 38 having a rotating drum 37 for receiving the residue is provided in communication with the outlet of the transfer pipe 36. The heating furnace 38 is provided with the burner 3 so that the inside of the furnace can be maintained at a high temperature. The rotary drum 37 is rotated by the rotation of a drive shaft connected to a motor (not shown).

A drum outlet pipe 39 is connected to the side of the rotary drum 37 opposite to the transfer pipe 36. Further, a push-out transfer means 32 is provided at the outlet of the drum outlet pipe 39. The push-out transfer means 32 also comprises an extruder 35 having a built-in piston 34 that pushes out residues in a straight line via a three-way valve 33, and a transfer pipe 36 for receiving the residues and guiding them to a predetermined place.

The present embodiment has the above-mentioned structure, and during operation, the residue flowing from the outlet of the pyrolysis furnace 1 into the three-way valve 33 is pushed by the piston 34 of the extruder 35 and sent to the transfer pipe 36. This residue passes through the transfer pipe 36 and the rotary drum 3
It is thrown into 7. Here, the residue that receives the heat of the heating furnace 38 is dry-distilled in a substantially dry state, and the oil is recovered from the uncracked hydrocarbons remaining in the residue. After this, the residue reaches the three-way valve 33 through the drum outlet pipe 39, from which it is pushed by the piston 34 of the extruder 35 and transferred to the transfer pipe 36.

The heating furnace 38 for obtaining the dry distillation effect described herein can be used in combination with any of the cooling means for the residue described above.

According to the present embodiment, in addition to the effects of the above-described embodiment (see FIG. 5), a larger amount of fuel oil can be recovered from the residue by the dry distillation action in the heating furnace 38, and the oil recovery rate can be improved. Can be further improved.

Further, another embodiment of the present invention will be described. In each of the embodiments described above, the thermal decomposition tank 1 is applied as an application example.
However, this is equally applicable to a melting vessel that further melts the plastic in the molten state via a blending process.

For example, a residue recovery chamber 6 may be provided at the outlet of the melting tank via the residue system 5 of FIG. 1 and the spray water systems 13a and 13b may be connected thereto.

A cooling and conveying means 28 having a screw 30 may be provided at the outlet of the melting tank via the residue system 5 of FIG.

Further, the extrusion transfer means 32 shown in FIG. 5 may be provided at the outlet of the melting tank. The term "residue" in this melting vessel is improper, and the "residue" portion explained above is replaced with molten plastic.

In the present embodiment, the molten plastic is cooled at the point where it exits the melting tank, so that it solidifies there and is recovered as solid fuel. Since the molten plastic to be cooled contains a high proportion of hydrocarbons, a high quality solid fuel having a high hydrocarbon content can be obtained.

As an embodiment, it is preferable to use molten plastic.
A melting furnace that melts at a very high temperature and communicates with this melting furnace.
The molten plastic that flows inside is sprayed.
-Melting plus having cooling means for cooling by blowing water
Inside the tic recovery chamber and this molten plastic recovery chamber
Melt plastic to transport the molten plastic outside the room.
It may be provided with a transport means. To do so
The molten plastic without chlorine content exits the melting tank.
The low temperature spray water blows off and cools down
The solidification of molten plastic with high hydrocarbon content
Can be made. This results in a high hydrocarbon content
It is possible to obtain high quality solid fuel. Also melt
Melting furnace that melts molten plastic while keeping it at a higher temperature
And, it is installed in communication with this melting furnace and fills the inside
Place the residue in an inert gas atmosphere with a neutral gas while
Indirectly cooled by means of a spiral path
A cooling transport means for transporting to the outside
You can also By doing so, the melting process without chlorine is removed.
The plastic is cooled by water as it exits the melting tank.
Since the molten plastic remains high in hydrocarbon components,
Can be solidified. This results in a hydrocarbon content
It is possible to obtain a solid fuel of high quality and high quality.

Furthermore, in each of the above embodiments,
Forcibly transfer the molten plastic from the melting furnace
You may make it provide the extrusion transfer means to send. This
As a result, the molten plastic residue is extruded by
Forced extrusion and melting plus at the outlet of the melting tank
To eliminate tic retention or clogging
become.

[0077]

As described above, according to the present invention, it is possible to prevent the oil gas discharged from the high temperature residue flowing out from the outlet of the thermal decomposition tank from flowing out to the environment, and to prevent the oil gas from accumulating. It is possible to eliminate the risk of fire and explosion.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a waste plastic continuous processing apparatus according to the present invention.

FIG. 2 is a configuration diagram showing another embodiment of the present invention.

FIG. 3 is a perspective view showing a recovery plate and an inclined plate shown in FIG.

FIG. 4 is a configuration diagram showing another embodiment of the present invention.

FIG. 5 is a configuration diagram showing another embodiment of the present invention.

FIG. 6 is a configuration diagram showing another embodiment of the present invention.

FIG. 7 is a configuration diagram showing another embodiment of the present invention.

[Explanation of symbols]

1 Pyrolysis tank 6 residue collection room 8 belt conveyor 13a, 13b Spray water system 14 nozzles 17 First Tank 18 ducts 19 Second tank 28 Cooling and conveying means 30 screws 33 three-way valve 34 Extruder 38 heating furnace

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masayoshi Kaneko 2-4 Suehiro-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Inside Keihin Office, Toshiba Corporation (72) Eiichi Sugiyama 1-1-1, Shibaura, Minato-ku, Tokyo No. 1 in Toshiba Head Office (56) References JP 10-140167 (JP, A) JP 8-157833 (JP, A) JP 11-57659 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) C10G 1/10

Claims (5)

(57) [Claims] 1. A thermal decomposition tank for thermally decomposing molten plastic, a residue recovery chamber provided in communication with the thermal decomposition tank and having cooling means for blowing spray water to the residue flowing inside to cool the residue. A continuous waste plastic processing device comprising a residue transport device that is in the residue recovery chamber and transports the residue to the outside of the room. 2. A thermal decomposition tank for thermally decomposing molten plastic, a first tank provided in communication with the thermal decomposition tank for cooling the residue with low temperature water stored therein, and the first tank.
A second tank for receiving the high temperature water sent from the tank of No. 2 through the duct, the second tank and the first tank are provided in communication with each other, and the high temperature water extracted from the inside of the second tank is A circulation system including a heat exchanger for cooling and a circulation pump for returning cooled low-temperature water to the first tank, and a residue recovery means for recovering a residue carried in water in the duct. Waste plastic continuous processing equipment equipped with. 3. A thermal decomposition tank for thermally decomposing molten plastic, and a thermal decomposition tank which is provided in communication with the thermal decomposition tank and places the residue under an inert gas atmosphere with an inert gas filling the inside and indirectly by water. The continuous processing apparatus for waste plastics, which is provided with a cooling and conveying means which is cooled and conveyed to the outside of the container through a spiral conveying path. 4. The waste plastic continuous processing apparatus according to claim 1, further comprising an extrusion transfer means for forcibly transferring the residue from the thermal decomposition tank. 5. A heating furnace for heating the residue from the thermal decomposition tank to dry it is provided.
The waste plastic continuous processing device according to any one of 1.