JP2003321681A - Apparatus for converting waste resin into oil - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for converting a waste resin into an oil preventing an explosion caused by abnormal combustion by adopting a structure controlling the pressure of a pyrolysis furnace to some extent, further enhancing the treatment efficiency and reducing the time and labor during treatment. <P>SOLUTION: The apparatus for converting the waste resin into the oil comprises the pyrolysis furnace 110 equipped with a charging part 112 having a water-sealed structure and a body provided with a combustion chamber 114 and a pyrolysis chamber 115. An air intake port 117a having an air conditioning valve 113 is installed in an ash band chamber 117 under the body. Thereby, air in a volume controlled so as to be kept under a negative pressure with an exhauster arranged on the downstream side of an oil recovering passage connected to a gas release port 116 is introduced into the pyrolysis furnace 110. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste resin oilification device, and more particularly to a structure suitable as a device for recovering oil from gas generated by burning a waste tire.

[0001]

2. Description of the Related Art Generally, waste tires include general wastes discharged from general households as sorted wastes and industrial wastes discharged from traders. For both general waste and industrial waste, waste tires are usually disposed of by incineration or landfill, but due to high treatment costs and lack of landfill sites, etc. The current situation is that illegal dumping is endless.

In recent years, as a method of disposing of waste tires, a method of recovering oil content by thermal decomposition and reusing it as fuel has been proposed, and this method has come to be implemented in various places. This method requires an oilification plant equipped with a pyrolysis furnace that melts and thermally decomposes a waste tire that is a raw material, and a cooling recovery device that cools the pyrolysis gas generated in the pyrolysis furnace.

In the above-mentioned oilification plant, waste tires are put into a pyrolysis furnace, and the waste tires are heated while blowing air into the pyrolysis furnace with a blower. There is known a relatively large oil plant that is configured to recover oil from oil.

In addition, a predetermined amount of waste tires is put into the pyrolysis furnace, the pyrolysis furnace is sealed, and the pyrolysis gas generated by heating the waste tires is cooled to recover oil. There is also a relatively small oil plant.

[0005]

However, of the above conventional oilification plants, in the former relatively large oilification plant, the internal pressure of the pyrolysis furnace is always operated in a state higher than atmospheric pressure. Therefore, if the gas inside the furnace comes into contact with the outside air, or if abnormal combustion occurs in a waste tire, the amount of gas generated cannot be controlled and the pressure inside the pyrolysis furnace may rise rapidly, causing an explosion. As a result, most plants are currently shut down.

Further, in the latter relatively small oil plant, the efficiency of treatment cannot be improved because it is basically operated in batch processing and it is difficult to increase the size of the pyrolysis furnace. There is. In addition, it is necessary to open and close the pyrolysis furnace for each treatment, and the inside of the furnace must be cleaned for each treatment, which is very troublesome during the treatment and it is difficult to reduce the treatment cost.

Therefore, the present invention solves the above-mentioned problems, and its object is to prevent an explosion due to abnormal combustion by adopting a structure capable of controlling the pressure of the pyrolysis furnace to some extent. An object of the present invention is to provide an oil liquefaction device for waste resin that can be prevented. Another object of the present invention is to provide an oiling device for waste resin, which can improve processing efficiency and can reduce the time and effort required for processing.

[0008]

In order to solve the above-mentioned problems, the waste resin oilification apparatus of the present invention is a waste for recovering oil from gas generated by burning waste resin in a pyrolysis furnace. In the resin oilification device, an air regulating valve is provided at the air inlet of the pyrolysis furnace, and an exhaust means is provided on the downstream side of an oil recovery path for recovering oil from the gas generated in the pyrolysis furnace. It is provided that the inside of the pyrolysis furnace and the oil recovery path are held at a negative pressure by the exhaust means.

According to the present invention, since the exhaust means is configured to keep the inside of the pyrolysis furnace and the oil recovery passageway at a negative pressure, the generation of gas from the waste resin inside the pyrolysis furnace. Since the state is indirectly controlled, abnormal gas generation due to abnormal combustion, etc. is suppressed, and the rise in pressure in the pyrolysis furnace and oil recovery path is also suppressed, reducing the risk of explosion, etc. be able to. Further, since the air regulating valve is provided at the air inlet of the pyrolysis furnace, the amount of air flowing into the pyrolysis furnace is regulated, so that the negative pressure state can be controlled more reliably. The stable operation can be performed.

In the present invention, it is preferable that a water sealing structure is provided at an inlet of the waste resin in the thermal decomposition furnace. By providing the water sealing structure at the input port of the pyrolysis furnace, it is possible to prevent the reverse flow of the gas in the furnace and to cut off the gas in the furnace and the outside air, so that the risk of explosion or the like can be reduced. In addition, even if waste resin is continuously added, the negative pressure state of the pyrolysis furnace can be maintained, and the pyrolysis state inside the pyrolysis furnace can be stabilized, so continuous operation is possible. It is possible to improve the processing efficiency. Further, abnormal combustion is less likely to occur, and the operating state of the pyrolysis furnace can be further stabilized.

In the present invention, it is preferable that the air regulating valve operates so as to suppress fluctuations in pressure difference between the inside and outside of the pyrolysis furnace. By operating the air control valve to suppress the fluctuation of the pressure difference between the inside and outside of the pyrolysis furnace, it is possible to stabilize the internal pressure of the pyrolysis furnace even if the amount of gas generated inside the pyrolysis furnace fluctuates. it can. In addition, when the amount of gas generated inside the pyrolysis furnace fluctuates, the amount of air taken in will fluctuate accordingly, so fluctuations in the amount of gas generated inside the pyrolysis furnace are indirectly suppressed. To be done. Therefore, it becomes possible to avoid an abnormal pressure rise, and a safer operation can be realized.

In the present invention, the negative pressure is 0.80 to
It is preferably a value within the range of 0.95 atm. When the negative pressure is a value within the range of 0.80 to 0.95 atm (about 80 to 95 kPa), it is possible to achieve both processing efficiency and safety. If the pressure is less than 0.80 atm, the amount of gas generated from the waste resin decreases, and the processing efficiency decreases. Further, when the pressure exceeds 0.95 atm, the difference from the atmospheric pressure becomes small, which makes it difficult to control the pressure itself.
The abnormal occurrence of gas is likely to occur. Particularly, it is desirable that the pressure is within the range of 0.85 to 0.90 atm among the above ranges.

In the present invention, it is preferable that, in addition to the oil recovery path, a bypass path that connects the inside of the thermal decomposition furnace and the middle of the oil recovery path is provided. By providing the bypass path, it is possible to reduce temporal fluctuations in the internal pressure of the pyrolysis furnace. For example, even if the pressure rises abnormally in the pyrolysis furnace, the pressure can be released in the middle of the oil recovery route via the bypass route, making it easier to maintain the negative pressure state by the exhaust means, and Can be suppressed.

In the present invention, the oil recovery route includes:
A separator for removing solid substances and a cooler arranged on the downstream side of the separator are provided, and the bypass path communicates the inside of the pyrolysis furnace with the cooler. It is preferable. Since the pressure decreases due to the gas being cooled inside the cooler, the bypass path is connected to the cooler, so that the pressure in the pyrolysis furnace can be released more efficiently.

In the present invention, the thermal decomposition furnace has a combustion region in which the waste resin burns, and a thermal decomposition region in which the gas generated from the combustion region is thermally decomposed. Is preferably smaller than the in-furnace cross-sectional area of the pyrolysis region. Since the in-furnace cross-sectional area of the combustion area is smaller than the in-furnace cross-sectional area of the pyrolysis area, the amount of waste resin in the combustion area can be limited, so that the occurrence of gas abnormalities can be prevented, and more It can be operated in a stable state.

In the present invention, it is preferable that the in-reactor cross-sectional area of the combustion region is within a range of 36 to 64% of the in-reactor cross-sectional area of the pyrolysis region. This makes it possible to achieve both the processing efficiency of waste resin (gas generation amount) and the suppression of abnormal combustion. If it exceeds the above range, the amount of thermal decomposition of the waste resin in the combustion region increases, and abnormal combustion easily occurs.If it falls below the range, the amount of thermal decomposition of the waste resin in the combustion region decreases. As a result, the amount of gas generated tends to decrease, and the processing efficiency decreases.

In the present invention, it is preferable that the residue take-out portion provided in the lower portion of the pyrolysis furnace has a water sealing structure. Since the residue extraction part has a water sealing structure, the residue can be extracted without stopping the thermal decomposition furnace, and it is possible to prevent excessive air from being introduced into the thermal decomposition furnace. Therefore, the residue can be arbitrarily taken out during the continuous operation, so that the continuous operation can be performed more easily and continuously for a long time.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Next, with reference to the accompanying drawings, an embodiment of an oily-oiling apparatus for waste resin according to the present invention will be described in detail. FIG. 1 is a schematic cross-sectional view schematically showing the structure of a pyrolysis furnace in a waste resin oilification apparatus according to the present invention,
FIG. 2 is a schematic configuration diagram showing the overall configuration of the waste resin oilification device according to the present invention.

First, referring to FIG. 2, the overall structure of the oiling apparatus 100 according to the present invention will be described. Oilification device 1
A pyrolysis furnace 110 is provided at 00. The thermal decomposition furnace 110 generates gas by burning and thermally decomposing waste resin such as waste tires. In the pyrolysis furnace 110, a carry-in conveyor 111 for supplying waste resin such as cut tires, and the carry-in conveyor 1
Input section 11 for receiving waste resin supplied by 11
2 and an air regulating valve 113 provided at the air intake for taking in air from the outside. Input section 1
Reference numeral 12 has a water-sealing structure as will be described later, and shuts off the gas inside the furnace from the outside air, so that the gas inside the furnace is released from the charging part 112, or the outside air enters the pyrolysis furnace 110. It is configured not to.

A cyclone 120, which is a separator for separating solid substances, is connected to the downstream side of the pyrolysis furnace 110. The cyclone 120 is for separating the solid content from the gas generated in the pyrolysis furnace 110 into a recovery container 121,
For example, carbon (fine carbon particles) in the gas is separated. As the cyclone 120, it is preferable that the cyclone 120 is configured by a double cyclone in order to collect the solid content more reliably.

Further, an indirect cooler 130, which is a cooler for cooling the gas, is connected to the downstream side thereof. By being cooled by the indirect cooler 130, tar is separated from the gas and discharged into the recovery container 131.

On the further downstream side, a heat exchanger group 140 as a cooler is connected. A plurality of heat exchangers 141, 142, 143, 144 are connected in series to the heat exchanger group 140. Oil heat separation tank 1 for each heat exchanger
45, 146, 147, 148 are connected. These oil / water separation tanks 145, 146, 147, 148 separate oil and water by utilizing the difference in specific gravity, and the separated water is recovered from the gas and discharged into a recovery container 149, and oil (kerosene ) Is collected. This oil is pump 1
It is collected in the collecting container 155 by 54. The oiling capacity of the cooler can be adjusted by the amount of water supplied.

The heat exchanger group 140 is connected to the exhaust fan 151 which is an exhaust means. The air blower 151 is the pyrolysis furnace 1
It is configured to exhaust the oil recovery path formed between the air conditioner 10 and the air exhauster 151. A water sealing tank (bubbling tank) 152 is connected to the exhaust fan 151. The water sealing tank 152 prevents outside air from invading (backflowing) the oil recovery path from the downstream side. The water sealing tank 152 is further connected to the smoke washing tower 153. The smoke washing tower 153 discharges the gas discharged from the oil recovery path through the exhaust fan 151 and the water sealing tank 152 to the outside air.

In the oil refining apparatus 100, the thermal decomposition furnace 11
Only the air controlled by the air regulating valve 113 is introduced into the 0. In addition, the outside air is not introduced into the oil recovery path. For this reason,
By the exhaust fan 151 exhausting the oil recovery path,
The pyrolysis furnace 110 and the oil recovery path on the downstream side thereof are always kept at a negative pressure (that is, a pressure lower than the external pressure). In the present embodiment, basically, the operating state of the oilification device is controlled by adjusting the amount of exhaust air of the exhaust fan 151. Therefore,
Since the oilification device cannot be operated when the exhaust fan 151 is stopped, it is preferable to always have a spare exhaust fan 151.

A bypass path 132 for adjusting the internal pressure is formed between the thermal decomposition furnace 110 and the indirect cooler 130 which is a cooler. Therefore, the blower 151
Not only exhausts the inside of the thermal decomposition furnace 110 via the oil recovery path, but also directly exhausts the thermal decomposition furnace 110 from the indirect cooler 130 via the bypass path 132.

Next, the pyrolysis furnace 110 will be described in more detail with reference to FIG. The pyrolysis furnace 110 is provided with a charging unit 112 for receiving the waste resin from the carry-in conveyor 111, and the charging unit 112 has a charging water sealing tank 112A.
And a transfer conveyor 112B for transferring the waste resin charged into the input water sealing tank 112A to the main body of the pyrolysis furnace. Liquid such as water is stored in the input water sealing tank 112A. This liquid shuts off the outside from the inside of the main body of the pyrolysis furnace by a water sealing structure, and shuts off the gas inside the furnace and the outside air.

In the main body of the thermal decomposition furnace 110, a combustion chamber 114 is provided in the lower part and a thermal decomposition chamber 115 is provided in the upper part. Above the thermal decomposition chamber 115, a gas discharge port 116 for sending gas to the oil recovery path is formed. An ash belt chamber 117 is provided below the combustion chamber 114.
The ash belt chamber 117 is provided with an air intake 117a. At the air intake 117a, the air regulating valve 11 is provided.
3 is attached. The air regulating valve 113 is operated by natural ventilation caused by the operation of the air exhauster 151, and thus the atmospheric pressure (usually atmospheric pressure; 1 atm = about 100 kPa).
And the inside of the pyrolysis furnace 110 (that is, the internal pressure of the ash zone chamber 117) operate so that an internal / external pressure difference of a predetermined range (for example, 0.05 to 0.1 atmospheric pressure (about 5 to 10 kPa)) occurs. . That is, the valve opening is increased when the internal / external pressure difference is smaller than the above range, and is decreased when the internal / external pressure difference is larger than the above range. As such a structure of the air regulating valve 113, one having a valve body configured to always receive a stress (for example, a force due to the weight of a weight) in a closing direction and to be opened by an internal / external pressure difference. Is mentioned. Further, not only is it possible to maintain the inside / outside pressure difference within a certain range by adjusting the valve opening degree, but it is also possible to maintain the inside / outside pressure difference within a certain range simply by repeating opening / closing operations by increasing / decreasing the inside / outside pressure difference. It may be. It should be noted that a combustion burner or the like is not necessary since it is self-combustion using natural ventilation.

Inside the ash belt chamber 117, the upper rustle 11
7A and the lower roster 117B are vertically arranged, and are arranged below the combustion chamber 114. The combustion chamber 1 is provided between the upper rostrut 117A and the lower rostrut 117B.
A plurality of openings are provided with a size such that the waste resin in the initial state, which has been charged from 14, does not fall directly. In addition, in the processing state, the openings of the upper roster 117A and the opening of the lower rostrut 117B are arranged so as not to overlap each other in plan view. Upper Lostor 117A and Lower Lostor 1
17B is configured to be relatively movable so that the above state and the state in which the openings overlap each other in a plane are appropriately switched.

An ignition port 117b is provided in the ash belt chamber 117. The ignition port 117b is used when the exhaust resin in the combustion chamber 114 is ignited, but it can also be used for checking the ash belt chamber 117. The ignition port 117b is used in the pyrolysis furnace 110.
Is closed by a cap 117c during operation.

A residue take-out section is provided below the ash belt chamber 117, and a lower water sealing tank 118 is provided at this residue take-out section. A liquid such as water is contained in the lower water-sealing tank 118, and is configured so that outside air does not enter the ash belt chamber 117 from the residue extraction portion. A carry-out conveyor 119 is arranged in the lower water-sealing tank 118 so that the residue dropped from the ash belt chamber 117 to the lower water-sealing tank 118 can be carried out.

In the thermal decomposition furnace 110, the internal cross sectional area (cross sectional area) of the combustion chamber 114 is smaller than the internal cross sectional area (cross sectional area) of the thermal decomposition chamber 115. For example, the inner diameter of the cylindrical combustion chamber 114 is 60 to 80%, preferably about 70% of the inner diameter of the pyrolysis chamber 115 which is also cylindrical. That is, the in-reactor cross-sectional area of the combustion chamber 114 is 36 to 64% of the in-reactor cross-sectional area of the pyrolysis chamber 115, preferably about 49.
It is configured to be%.

The pressure in the pyrolysis furnace 110 is, for example, 0.80 to 0.95 atm (about 8 atm during normal operation).
0 to 95 kPa), preferably 0.9 atm (about 90 kP
It is configured to be about a). That is, the air regulating valve 113 has a pressure of 0.8 in the pyrolysis furnace 110.
The outside air is introduced by adjusting the pressure to be 0 to 0.9 atm, preferably about 0.9 atm.

In the negative pressure state as described above, the exhaust fan 15 is previously set.
By keeping 1 in operation, it must already be held before the pyrolysis furnace 110 is ignited. When the negative pressure state is formed, the waste resin is put into the pyrolysis furnace 110,
The waste resin in the combustion chamber 114 is ignited from the ignition port 117b. When ignition is confirmed, set the ignition port 117b to the cap 1
Closed at 17c.

During normal operation, the waste resin is not only contained in the combustion chamber 114 but also in the thermal decomposition chamber 1 in the thermal decomposition chamber 110.
About 60 to 80% of the inner volume of 15 is deposited.
However, the waste resin thus deposited is normally burned so that only the waste resin disposed in the combustion chamber 114 is operated. The waste resin in the combustion chamber 114 burns to generate gas, which is decomposed into the thermal decomposition chamber 11
While ascending inside 5, thermal decomposition occurs at high temperature and negative pressure. The gas generated by the thermal decomposition passes through the space (gas chamber) above the thermal decomposition chamber 115, exits the gas discharge port 116, and is sent to the oil content recovery path.

In the present embodiment described above, since the inside of the thermal decomposition furnace 110 and the oil recovery path are kept at a negative pressure by the exhaust fan 151, there is little risk of explosion or the like due to pressure increase, and safe operation is possible. It can be carried out. In particular,
Since the inflow amount of air into the pyrolysis furnace 110 is controlled by the air adjustment valve 113, even if the amount of gas generated inside the pyrolysis furnace 110 increases, the amount of outside air introduced by the air adjustment valve 113 decreases. As a result, the temporary increase in the pressure inside the thermal decomposition furnace 110 can also be suppressed. In particular, when the internal pressure of the pyrolysis furnace increases, the amount of air introduced decreases and the combustion degree of the waste resin also decreases, so the amount of gas generated decreases, and when the internal pressure of the pyrolysis furnace decreases, Since the amount of gas generated increases as the amount of introduction increases and the degree of combustion of the waste resin increases, the amount of gas generated in the thermal decomposition furnace 110 is always indirectly controlled by the air regulating valve 113. Therefore, the extremely stable thermal decomposition state can be continuously maintained.

Further, in this embodiment, the bypass route 13
Since No. 2 is provided, it is possible to suppress the fluctuation of the internal pressure due to the fluctuation of the gas generation amount in the thermal decomposition furnace 110. For example, even if abnormal combustion or the like temporarily occurs in the thermal decomposition furnace 110 and the pressure increases rapidly beyond the control by the air regulating valve 113, the bypass path 132 is provided, so that the thermal decomposition furnace is provided. Since the pressure in 110 can be released to the indirect cooler 130, which is a cooler, directly via the bypass path 132, safer operation can be performed.

Particularly, as described above, the internal pressure is 0.80 to 0.
If the pressure is higher than 95 atm, it becomes difficult to control the internal pressure by the air regulating valve 113, and the combustion state becomes unstable. In this case, it is considered that the risk of explosion and the like is increasing. On the other hand, when the internal pressure was lower than the above range, the combustion state deteriorated, the gas generation amount decreased, and the processing efficiency decreased.

Further, in this embodiment, since the water inlet structure and the residue outlet are provided with the water sealing structure, even if the continuous operation is performed, air is not supplied to the air intake port 117a provided with the air regulating valve 113. Since there is no portion in which P enters, the negative pressure in the thermal decomposition furnace 110 can be easily maintained. Therefore, it is not necessary to perform batch processing as in the conventional small oil plant, and the production amount can be greatly increased.

In this embodiment, since the furnace cross-sectional area of the combustion chamber 114 is smaller than the furnace cross-sectional area of the thermal decomposition chamber 115, the gas can be smoothly discharged to the oil recovery path while the waste resin is burned. By suppressing the amount to some extent,
Since the gas decomposition efficiency can be improved, it is possible to improve the processing efficiency. By setting the in-furnace cross-sectional area of the combustion chamber 114 within the range of 36 to 64% of the in-furnace cross-sectional area of the thermal decomposition chamber 115 as described above, the processing efficiency (increase in gas generation amount) and safety can be improved. Can be compatible. For example, in this embodiment, about 370 kg of oil was recovered per ton of waste tire in the above range, but if the area ratio of the combustion chamber 114 is higher than the above range, the combustion state of the waste resin becomes unstable, The amount of oil recovered is also reduced. For example, when the furnace area of the combustion chamber was made the same as that of the pyrolysis chamber, the amount of oil recovered fell to about 300 kg. Further, if the area ratio is made lower than the above range, the oil treatment efficiency also largely decreases.

The waste resin oilification device of the present invention is not limited to the above-mentioned illustrated example, and various modifications can be made without departing from the scope of the present invention. For example, the cyclone 120 (separator for solid substances) and the indirect cooler 1 provided in the oil recovery path.
The configurations of the 30 (cooler), the heat exchanger group 140 (which is also a kind of cooler), and the like can be appropriately changed according to the type and properties of the substance to be recovered. More specifically, reverse the order of the solid substance separator and cooler,
It is also possible to omit the separator or change the configuration of the cooler.

[0041]

As described above, according to the present invention,
By keeping the inside at a negative pressure, it is possible to prevent explosion and the like due to abnormal combustion, and it is possible to operate safely. Further, since continuous processing is possible, processing efficiency can be improved and time and effort required for processing can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view schematically showing the structure of a pyrolysis furnace in an embodiment of a waste resin oilification apparatus according to the present invention.

FIG. 2 is a schematic configuration diagram showing an outline of an overall configuration of the same embodiment.

[Explanation of symbols]

100 ... waste resin oiling device, 110 ... thermal decomposition furnace, 111 ... carry-in conveyor, 112 ... loading section,
112A ... Input water sealing tank, 112B ... Transfer conveyor, 113 ... Air regulating valve, 114 ... Combustion chamber, 1
15 ... Thermal decomposition chamber, 116 ... Gas discharge port, 117
... Ash belt chamber, 120 ... Cyclone, 130 ...
Indirect cooler, 132 ... Bypass path, 140 ...
Heat exchanger group, 151 ... Exhaust fan

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3K061 AA23 AB02 AC14 BA07 CA01                       FA03 FA10 FA12 FA25 FA26                 4F301 AA03 CA09 CA25 CA26 CA41                       CA52 CA62 CA63 CA73                 4H029 CA12 CA15                 4K045 AA01 BA10 GA10 GB10 GC07                 4K063 AA01 BA13 CA06 DA23

Claims (9)

[Claims] 1. A waste resin oilification device for recovering oil from gas generated by burning waste resin in a pyrolysis furnace, wherein an air regulating valve is provided at an air intake of the pyrolysis furnace. The exhaust means is provided on the downstream side of the oil recovery path for recovering the oil content from the gas generated in the pyrolysis furnace, and the inside of the pyrolysis furnace and the oil recovery path are set to a negative pressure by the exhaust means. A waste resin oilification device, which is configured to be retained. 2. The water sealing structure is provided at a waste resin charging port of the pyrolysis furnace.
The waste resin oilification device according to [1]. 3. The waste resin oilification device according to claim 1 or 2, wherein the air regulating valve operates so as to suppress fluctuations in pressure difference between the inside and outside of the thermal decomposition furnace. 4. The negative pressure has a value within the range of 0.80 to 0.95 atm.
The waste resin oilification apparatus according to any one of 1. 5. A bypass path is provided separately from the oil recovery path, which connects the inside of the pyrolysis furnace with the middle of the oil recovery path.
The oiling apparatus for waste resin according to claim 4. 6. The oil recovery path is provided with a separator for removing solid substances, and a cooler arranged on the downstream side of the separator, and the bypass path is provided for the pyrolysis furnace. The waste resin oilification device according to claim 5, wherein the inside is communicated with the cooler. 7. The pyrolysis furnace has a combustion region in which the waste resin burns, and a pyrolysis region in which the gas generated from the combustion region is pyrolyzed, and a cross-sectional area of the combustion region in the furnace is The cross-sectional area in the furnace of the pyrolysis region is smaller than that in the furnace.
The waste resin oilification apparatus according to any one of 1. 8. The in-furnace cross-sectional area of the combustion region is configured to be within a range of 36 to 64% of the in-furnace cross-sectional area of the pyrolysis region. Of waste resin oil. 9. The waste resin oilification device according to claim 1, wherein a residue take-out portion provided at a lower portion of the pyrolysis furnace has a water sealing structure. .