KR100345761B1 - Emulsification reduction device of waste plastic - Google Patents

Abstract

The present invention is an emulsification reduction apparatus of waste plastic (P) by pyrolysis having a pyrolysis tank (2) comprising a tank body (3).

The interior of the tank body (3) is divided into a pyrolysis chamber (Rf) at the front and a dissolution chamber (Rr) at the rear by the partition portion (7), the pyrolysis chamber (Rf) provided below the partition portion (7) and The communication space Rc which connects through the melting chamber Rr continuously is provided. By providing the heating tubes in the tank body, hot air is advanced from the pyrolysis chamber to the dissolution chamber through the connection space. This configuration allows the pyrolysis chamber, the connection space and the melting chamber to be maintained at a temperature suitable for pyrolysis and melting, thereby simplifying and minimizing the device, significantly reducing costs and facilitating maintenance, and increasing productivity and economy. have.

Description

Emulsifying and Reducing Device of Waste Plastic

The present invention relates to an emulsification reduction apparatus for waste plastics for recycling the waste plastics.

BACKGROUND ART Conventionally, an emulsion reduction apparatus is known in which waste plastic (polymer waste) is heated to pyrolyze and then reduced to heavy oil (corresponding to A heavy oil).

In this type of emulsion reduction apparatus, solid waste plastics such as polyethylene, polyesterol, and vinyl chloride are dissolved in a dissolution tank heated to about 250 ° C (70 ° C for vinyl chloride) at a relatively low temperature, and then 400 Pyrolysis of the waste plastic dissolved by a pyrolysis tank heated to a high temperature of about 170 ° C (vinyl chloride) and cooling of the vaporized decomposition gas yields heavy oil. In addition, when the solid waste plastic is directly injected into the pyrolysis tank, the waste plastic is carbonized, and the reduction efficiency is greatly reduced, and the treatment of carbides is very large. Solid waste plastic is dissolved.

However, the above-mentioned conventional waste plastics emulsification reduction apparatus has a problem to be solved as follows.

First, since a separate dissolution tank is required in addition to the pyrolysis tank, it leads to the complexity and size of the apparatus as a whole, and to a significant increase in cost, and also to a significant disadvantage in maintainability.

Second, the processing speed for waste plastics is slowed, the productivity of heavy oil is lowered, and the economics of production are inferior.

SUMMARY OF THE INVENTION The present invention solves the problems existing in the prior art, and realizes a simplification and compact compactness of the entire apparatus, which can significantly reduce costs and facilitate maintenance, and at the same time, significantly increase productivity and economy. An object of the present invention is to provide an emulsification reduction apparatus for waste plastics.

1 is a cross-sectional side view of a pyrolysis tank constituting a main part of a constitution (1) and an emulsion reduction apparatus according to Example 1,

2 is a cross-sectional front view of the X-X ray in FIG.

3 is a partial sectional view of a heating tube in the pyrolysis tank;

Figure 4 is a block diagram showing the overall configuration of the oil reduction apparatus,

5 is a block system diagram of a thermostat provided in the oil reduction apparatus,

6 is a cross-sectional side view showing the configuration of a pyrolysis tank constituting a main part of the emulsion reduction apparatus according to the configuration (2) and the second embodiment;

7 is a sectional plan view of a tank body showing a state in which a screw conveyor is installed in Example 3-1;

8 is a cross-sectional plan view of the tank body showing a state in which the rotary blades according to Example 3-2 are installed.

<Explanation of symbols for main parts of drawing>

1: Emulsification Reduction Device 2: Pyrolysis Tank

3: tank body 3f: front part of the tank body

3d: bottom part 4a of the tank main body; : Heating tube

4b... : Heating tube 4c... : Heating tube

4d… : Heating tube 4f... : Heating tube

7: partition section 8: aeration

P… : Waste Plastic Rf: Pyrolysis Chamber

Rr: Melting chamber Rc: Connecting space

L: Dissolved waste plastic H: Hot air

In order to achieve the above object, the constitution of the present invention is the tank body in the emulsification reduction apparatus (1) of waste plastic (P ...) having a pyrolysis tank (2) for heating and thermally decomposing waste plastic (P ...). By installing the partition portion 7 inside (3), the front of the partition portion 7 is made into the pyrolysis chamber Rf, and the rear portion of the partition portion 7 is made into the melting chamber Rr. The lower portion of the diaphragm 7 is formed as a connection space Rc between the pyrolysis chamber Rf and the dissolution chamber Rr, and the heating tubes 4a, 4b, 4c, 4d, 4e are respectively formed. ..., 4f ...) consists of a pyrolysis chamber from a hot air generator, a connecting space from a pyrolysis chamber, a melting chamber from a connecting space, and a communication from the dissolving chamber to the outside. .

1 and 6 show embodiments of means for solving the above problems, respectively.

And in the embodiment shown in FIG. 1, several heating tubes 4a ..., 4b ..., 4c ..., 4d ..., 4e ..., 4f ... along the up-down direction which has the ventilation path 8 in the front-back direction, Between the front connection space Cf of the tank body 3 which is blocked from the outside (4a…, 4b…), and the rear connection space Cr and the diaphragm 7 of the tank body blocked from the outside. ) Between (4e ..., 4f ...) and the outer connection space (Cf) of the tank body blocked from the outside and the connection space (Cr) behind the tank body (blocked) (C) and 4d, respectively, and a heating tube between the front connection space Cf of the tank body and the partition portion 7 is connected to the hot air generator 21, and is located at the rear of the tank body. The heating tube between the connection space Cr and the partition portion 7 (4e ..., 4f ...) is connected to external communication.

On the other hand, in the embodiment of Fig. 6, one or several heating tubes 4a, 4b, 4c, 4d, 4e, 4f, etc. are connected in a bent state in the order of hot air generator → melting chamber → communication. It is.

According to the connection situation by embodiment as shown in FIG. 1 and FIG. 6, the heating tube of a pyrolysis chamber is set to the temperature suitable for thermal decomposition, the heating tube of a melting chamber is set to the temperature suitable for melting, and a connection space About the heating tube in, it can set to the intermediate temperature.

Based on the above temperature setting, the solid waste plastics P… introduced into the melting chamber Rr are heated and dissolved by relatively low-temperature heating tubes 4e…, 4f…, 4c…, 4d…. . Meanwhile, the dissolved waste plastic L reaches the pyrolysis chamber Rf through the connection space Rc. As the dissolved waste plastic L increases, the liquid level reaches the upper part of the pyrolysis chamber Rf, so that the liquid level is applied to the high temperature heating tube 4a... Arranged on the upper part of the pyrolysis chamber Rf. When it reaches | attains, it heats by the said heating tube 4a ..., and vaporizes by pyrolysis. The vaporized cracked gas is cooled to liquefy to heavy oil (corresponding to A heavy oil).

Therefore, since the pyrolysis tank 2 is also used as a melting tank, simplification and compact compactness of the whole apparatus can be realized, and the cost can be drastically reduced, and the management is easy and the processing speed for waste plastics is also achieved. This increases the productivity of heavy oil and the economics of production.

In FIG. 1, the tank body 3 is narrowed at the bottom surface by inclining the front portion 3f. However, this keeps the molten waste plastic L at the bottom of the bottom surface even when the apparatus is not operated. In order to reduce the amount of heat required to keep warm by designing a small area of the bottom surface, the molten waste plastic moving through the connection space Rc from the front pyrolysis chamber Rf at the stage of operation of the apparatus. After (L) reaches the pyrolysis chamber (Rf), the specific gravity decreases as it changes from the dissolved state to the pyrolysis state, and it is derived from considering that the volume expands as it rises.

In Fig. 6, the front part 3f is in the vertical direction, and in particular, although the bottom part is not narrowly set, it is of course possible to adopt the design shown in Fig. 1.

However, such a design does not correspond to an essential configuration requirement of the present invention.

<Example 1>

The embodiment shown in FIG. 1 will be described based on FIGS. 2 to 5.

In the figure, reference numeral 2 denotes a pyrolysis tank constituting a main part of the oil reduction apparatus 1. The pyrolysis tank 2 is provided with the tank main body 3 which has the front part 3f, the back part 3r, and the bottom part 3d, as shown to FIG. 1 and FIG.

In addition, a partition portion 7 is provided between the left surface portion 3p and the right surface portion 3q at the intermediate position in the front and rear direction inside the tank body 3. This partitioning part 7 is comprised as a sealed body of internal hollow. The partition 9 is provided inside the partition 7, and the front space Sf and the rear space Sr are formed before and after the partition 9. Therefore, a pyrolysis chamber Rf is formed in front of the partition portion 7, and a dissolution chamber Rr is formed at the rear of the partition portion 7, and a connection space below the partition portion 7. (Rc) is formed.

On the other hand, the lower portion of the outer surface of the tank body 3 is surrounded by the outer plate 4, the heat insulating portion 32 having a closed space between the outer plate 14 and the tank body (3) is formed. The heat insulating oil 32 is supplied to the heat insulating portion 32 from a heater 31 to be described later. In Example 1, as illustrated in FIG. 1, the tank body 3 including the outer plate 14, the front connecting space Cf and the rear connecting space Cr are covered by the outer housing 13. The front connecting space Cf is located between the front part 3f of the tank body 3 and the outer housing 13, and the rear connecting space Cr is the rear part 3r of the tank body 3 and the outer housing. It is located between (13).

Four heating tubes 4a, which are arranged at predetermined intervals in the left and right directions, are installed at the uppermost end of the pyrolysis chamber Rf, and the openings of the front ends of the heating tubes 4a, are directed to the outside of the outer housing 13. At the same time, the rear end opening (inner end opening) is connected so as to be connected to the front space Sf in the partition 7. In addition, four heating tubes 4b… are arranged at the third stage on the pyrolysis chamber Rf at predetermined intervals in the left and right directions, and the front end openings of the heating tubes 4b… face the front connection space Cf. At the same time, the rear end opening (inner end opening) is connected to connect to the front space Sf. Further, four heating tubes 4c... And 4d... Which are arranged at predetermined intervals in the left and right directions on the third stage and the lowest stage on the pyrolysis chamber Rf are respectively provided. In this case, the heating tubes 4c… and 4d… penetrate through the pyrolysis chamber Rf, the connection space Rc and the melting chamber Rr, and openings at both ends of each heating tube 4c… and 4d… are shown in FIG. As shown in the drawing, the front connection space Cf and the rear connection space Cr are respectively directed.

In addition, four heating tubes 4f..., Arranged at predetermined intervals in the left and right directions at the top end of the melting chamber Rr, are provided, and the front end opening (inner end opening) of the heating tube 4f. At the same time, the rear end opening is directed toward the outside of the outer housing 13. In addition, four heating tubes 4e..., Arranged at predetermined intervals in the left and right directions at the second end of the melting chamber Rr, are provided, and the front end opening (inner end opening) of the heating tube 4e. At the same time as connecting to the rear space Sr in (7), the rear end opening is directed toward the rear connection space Cr. On the other hand, the mutual spacing of each heating tube 4a ..., 4b ..., 4c ..., 4d ..., 4e ..., 4f ... is set to about 10-15 cm.

Accordingly, in the case of the configuration of (1), as shown in Fig. 1, the heating tube 4a .. → the front space Sf. → the heating tube 4b. → the front connecting space Cf. → the heating tube ( 4c... And 4d...... (A), and a convection passage 8 that is continuous in the path of the rear coupling space Cr. The heating tube 4e .. the rear space Sr.

In Fig. 1, in the pyrolysis chamber and the dissolution chamber, heating tubes 4a, 4f, respectively, which are located at the top, are connected to the hot air generator 21 and the communication 22, respectively. It does not correspond to the constituent requirements of the present invention, and may be, for example, a connected state at an appropriate temperature in the pyrolysis chamber, the dissolution chamber, and the lens space.

Moreover, the hopper 12 for inject | pouring solid waste plastic P ... inside is installed in the upper end of the dissolution chamber Rr. Reference numeral 15 denotes a cover covering the upper surface of the tank body 3, and a duct 16 for recovering the decomposition gas is connected to the upper end of the center of the cover 15. This duct 16 is connected to the scrubber 52 mentioned later.

On the other hand, the outer end opening of the heating tube 4a... Arranged at the top is connected to the hot air generator 21, and the outer end opening of the heating tube 4f. 22). As a result, the hot air H supplied from the hot air generator 21 is discharged from the communication 22 to the outside via the air passage 8. At this time, the temperature of the heating tube 4a... Arranged above the pyrolysis chamber Rf increases with respect to the heating tube 4d... 4c... 4e..., 4f... That is, with respect to the temperature of the heating tube 4a ... arranged on the upstream side, the temperature of the heating tube 4f ... arranged on the downstream side is heat dissipation when the hot air H passes through the air passage 8…. Is gradually lowered.

Therefore, when the temperature of the heating tube 4a, which is disposed at the top, becomes the temperature (normally 400 ° C and vinyl chloride is 170 ° C) that thermally decomposes the waste plastic L, the heating tube 4c. The temperature of 4d ... is set to the temperature at which the waste plastic (P ...) is dissolved (typically 250 ° C, vinyl chloride is 70 ° C), so that the heating tubes 4a ..., 4b ..., 4c ..., 4d ..., 4e ..., 4f…) select conditions such as diameter, length, number and spacing.

In particular, in the pyrolysis chamber, not only the temperature but also a large amount of heat is required, and other heating tubes 4c…, 4d…, 4e…, 4f… are different from the heating tubes 4a…, 4b… of the pyrolysis chamber. In addition, it is also possible to design the diameter so that it may be bent in a zigzag shape in order to enlarge the diameter and the contact area with respect to the heating tubes 4a ..., 4b ... of the pyrolysis chamber.

And the outer peripheral surface of the heating tube 4a ..., the waste plastic L in which the inner surface of the tank main body 3, etc. melt | dissolve, and the surface which a decomposition gas touches apply | coat the liquefied glass (room temperature glass) which has heat resistance. Since the heating tube 4a, the tank main body 3, and the like are usually made of a metal material such as steel, corrosion is likely to occur due to oxidation or the like caused by heating. In particular, when vinyl chloride is used as waste plastic, corrosion and oxidation of the metal proceed at a high rate by chlorine generated. For this reason, the surfaces, such as heating tube 4a ..., are coated with the liquefied glass 25a ..., and chemical resistance, corrosion resistance, durability, etc. are improved. In this case, as shown in FIG. 3, for example, it is preferable to apply | coat the liquefied glass 25a, 25b ... on the surface of the heating tube 4a, and to form a multilayer glass layer.

In addition, a thermal insulation device 30 shown in Fig. 5 is attached to the pyrolysis tank 2. The thermal insulation device 30 includes a heating device 31. The heating device 31 is provided with a heating part 33, and as shown in FIGS. 2 and 5, the discharge part of the heating part 33 is connected to the heat insulating part through a pipe 35 having a valve 34. The suction part of the heating part 33 is connected to the upper other side of the said heat insulation part 32 via the piping 37 which has the valve 36 at the same time as it is connected to the upper one side of the 32. Accordingly, the heat insulating oil W is heated by the heating part 33 and then into the space between the outer plate 14 and the tank body 3 constituting the heat insulating part 32 through the pipe 35. At the same time as the supply, the heat insulating oil W in the space is configured to return to the heating section 33 through the pipe 37. Reference numeral 38 denotes an oil tank connected to the heating unit 33 through a valve 39, 40 a control unit responsible for various operations such as operation of the heating unit 33 and heating temperature, and 41 a vaporization. It is an extension including a function of liquefying the insulating oil.

4 shows the overall configuration of an emulsification reduction apparatus 1 having a pyrolysis tank 2. In the figure, 51 is a crusher for crushing a large waste plastic small, 52 is a scrubber for neutralizing chlorine gas, 53 is a PH adjustment tank installed in the scrubber, 54 is a cracked gas A condenser for liquefaction, 55 is a cooler (cooling tower) for cooling the condenser 54, 56 is a pump, 57 is an oil water separation tank for separating the obtained heavy oil and water, and 58 is A filter 59 is a heavy oil storage tank.

Next, the whole operation | movement of the emulsification reduction apparatus 1 including the function of the pyrolysis tank 2 which comprises the principal part of this Embodiment 1 is demonstrated with reference to each figure.

First, the hot air H is supplied to the heating tube 4a... Arranged at the top by the hot air generator 21. The path of hot air H is shown by the arrow in FIG. Thereby, the heating tube 4a ... is heated to around 400 degreeC (170 degreeC of vinyl chloride). In addition, the heating tubes 4c ..., 4d ... arrange | positioned at the lowest part are heated around 250 degreeC (70 degreeC in the case of vinyl chloride). Moreover, the hot air H which passed the ventilation path 8 is discharged | emitted from the communication 22 to the exterior. At this time, it is taken in by the blower 23.

On the other hand, solid waste plastics (polyethylene, polyesterol, vinyl chloride, etc.) (P ...) are fed into the hopper 12. At this time, the large waste plastic is crushed small by the crusher 51. Solid waste plastic (P ...) injected into the hopper 12 is supplied into the melting chamber (Rr).

In addition, the waste plastic (P ...) supplied to the inside of the melting chamber (Rr) falls to the bottom of the melting chamber (Rr), and is heated and dissolved by relatively low-temperature heating tubes (4c ..., 4d ...). Dissolved waste plastic (L) enters the pyrolysis chamber (Rf) through the connection space (Rc) and at the same time is accumulated inside the tank body (3). Since the liquid level reaches the top of the pyrolysis chamber Rf as the dissolved waste plastic L increases, this liquid level reaches the high temperature heating tube 4a... Arranged on the top of the pyrolysis chamber Rf. It is heated by the heating tube 4a ... and vaporized by thermal decomposition.

On the other hand, vaporized decomposition gas is supplied to the scrubber 52 through the duct 16, and the mixed chlorine gas is neutralized. Further, the cracked gas is supplied from the scrubber 52 to the condenser 54 and cooled to liquefy to heavy oil (corresponding to A heavy oil). The condenser 54 is always cooled by the cooling liquid sent from the cooler 55. The obtained heavy oil is supplied to the oil water decomposition tank 57. In the oil water decomposition tank 57, water and heavy oil are separated, the heavy oil is removed by impurities in the filter 58, supplied to the storage tank 59 and stored, and at the same time, a part of the hot air generator 21 It is supplied to and used as fuel of the hot air generating device (21).

In addition, while the operation of the liquefaction reduction apparatus 1 is stopped at night or the like, the thermal decomposition tank 3 is kept warm by the thermostat 30. In this case, the heat insulating oil W is heated to a temperature of 70 to 400 ° C. by the heating part 33, and the outer plate 14 and the tank main body constituting the heat insulating part 32 through the pipe 35. At the same time as being supplied to the space between 3), the insulating oil W in the space is returned to the heating section 33 through the pipe 37. As a result, the waste plastic L remaining in the tank body 3 is kept warm, and the start-up time at the time of restarting operation can be greatly shortened.

<Example 2>

Also about embodiment shown in FIG. 6, description based on FIG. 2-FIG. 5 of Example 1 is fundamentally valid.

However, in Example 2, as shown in FIG. 6, the heating tubes 4a ..., 4b ..., 4c ..., 4d ..., 4e ..., 4f ... are connected in order in the bent state.

In FIG. 6, the heating tubes 4a..., 4b ..... Are bent while protruding from the front part 3f and the rear part 3r of the tank body 3, and at the same time as the front space of the partitioning part 7. Also in Sf) and back space Sr, although each is bent as a protruded state, it implements that a heating tube contacts outer air by this protrusion, and the temperature of a hot air is reduced sequentially.

However, such a protrusion can gradually lower the temperature of the heating tube depending on the amount and speed of the hot air even without contacting the outside air. Extruding does not correspond to the structural requirements of the present invention.

In addition, unlike the case of FIG. 6, the front space Sf and the rear space Sr of the partition portion 7 are similar to those of FIG. 1, and the heating tubes 4a..., 4b. It is naturally also possible to design a structure in which the ..., 4f ... are in an interlocked state via the front space Sf and the rear space Sr, that is, partially adopting the embodiment of FIG.

<Example 3-1>

In Example 3-1, as shown in FIG. 7, lower than the partition 7 in the tank body 3 (the position of the melting chamber Rr and the pyrolysis chamber Rf, or the connection space Rc). Position, the case where the screw conveyor 30 which conveys between the front part 3f and the back part 3r, and which melt | dissolved or started to melt is conveyed to the front side is shown.

By providing such a screw conveyor 30, the waste plastic moves from the back to the front rapidly, and also by stirring in the tank body 3 of the screw conveyor 30, the conduction of heat by each heating tube is efficient. This can further increase the efficiency of dissolution and pyrolysis of the present invention.

<Example 3-2>

As shown in FIG. 8, Example 3-2 shows the structure which provided one or several rotary blades which rotate in a horizontal direction instead of the screw conveyor of Example 3-1.

Then, by rotating the rotor blades in a concave shape with respect to the rotational direction, the rotor blades move in the tank body 3 in a manner similar to that of the screw conveyor, while moving the waste plastics that are dissolved or begin to dissolve. Therefore, an efficient effect can be achieved as in the case of Example 3-1.

As mentioned above, although each Example was demonstrated in detail, this invention is not limited to such an Example, In the structure, shape, material, quantity, technique, etc. of a detail, it changes arbitrarily in the range which does not deviate from the summary of this invention. Can be.

Thus, the waste plastic emulsification reduction apparatus according to the present invention has a tank body in which the front surface is inclined and the bottom surface portion is narrowed, and by installing a partition portion inside the tank body, the pyrolysis chamber is moved forward from this partition portion. A plurality of heating pipes are formed at the rear of the partition section and the connecting spaces are formed at the bottom of the partition section, and are arranged at predetermined intervals in the tank body at predetermined intervals in the vertical direction and the left and right directions. This is provided, and also serves as a pyrolysis tank formed by setting a high temperature of the heating tube disposed above the pyrolysis chamber with respect to the heating tube disposed in the dissolution chamber.

(1) Since the pyrolysis tank is also used as the melting tank, the overall apparatus can be simplified and compact in size, and the cost can be greatly reduced and the maintenance can be facilitated.

(2) Since the processing speed for waste plastics is increased, the productivity and economic efficiency of heavy oil can be dramatically increased.

Claims (12)

In the emulsification reduction apparatus for waste plastics having a pyrolysis tank for heating and thermally decomposing waste plastics, by installing a partition part inside the tank body, the front part of the partition part is a pyrolysis chamber, and the rear part of the partition part is a melting chamber. The lower part of the partition is formed as a connection space between the pyrolysis chamber and the melting chamber, and the heating tube is connected to the pyrolysis chamber in the hot air generator, the connection space in the pyrolysis chamber, the melting chamber in the connection space, and the communication from the melting chamber to the outside. An emulsification reduction device for waste plastics based on successive connections. According to claim 1, wherein the heating pipe in the up and down direction having a ventilator in the front and rear direction, between the upper connection space and the partition portion of the tank body is cut off from the outside, the connecting space and the diaphragm portion behind the tank body is blocked from the outside Installed between the front connection space between the outside of the tank body and the outside of the partition body and the rear connection space between the outside and the tank body, and the heating tube between the front connection space of the tank body and the partition portion is hot air And a heating tube which is connected to the generator and is connected between the connection space behind the tank body and the partition portion to external communication. The method according to claim 1, wherein one or more heating tubes are connected in a bent state in order to communicate with each other in a pyrolysis chamber in a hot air generator, a connection space in a pyrolysis chamber, a melting chamber in a connecting space, and an external connection in a melting chamber. Emulsification reduction apparatus of waste plastic, characterized in that. The apparatus for emulsifying and reducing waste plastic according to claim 1, wherein the lower side of the tank body has a shape of narrowing downward. 2. The apparatus for emulsifying and reducing waste plastic according to claim 1, wherein a screw conveyor for conveying waste plastic is provided from the rear side to the front side of the bottom of the partition portion of the tank body. 2. The apparatus for emulsifying and reducing waste plastic according to claim 1, wherein one or more rotating blades in the horizontal direction are provided below the partition portion of the tank body. 2. A waste according to claim 1, wherein an upper portion of the pyrolysis chamber is connected to a scrubber for neutralizing chlorine gas, which is connected to a condenser that cooperates with a cooling device, and the condenser is connected to an oil water separation tank. Emulsifying and Reducing Device for Plastics. The waste plastic emulsion reduction apparatus according to claim 1, wherein the oil water separation tank is connected to the storage tank and the hot air generator through a filter. 2. The emulsion reduction apparatus for waste plastics according to claim 1, wherein the metal surface to which the decomposition gas generated by thermal decomposition of the waste plastics is connected is coated with a liquefied glass having heat resistance. 9. The apparatus for emulsifying and reducing waste plastics according to claim 8, wherein the liquefied glass is applied to the metal surface on which the decomposition gas contacts, and coated by forming a multilayer glass layer. The apparatus for emulsifying and reducing plastic according to claim 1, wherein the diameter of the heating tube in the pyrolysis chamber is designed to be larger than the diameter of the heating tube in the connection space and the dissolution chamber. The waste plastic emulsion reduction apparatus according to claim 1, wherein the heating tube in the pyrolysis chamber is designed in a zigzag bent state.