JP3116906U - Pyrolysis oil generator - Google Patents

Abstract

Provided is a pyrolysis oil converting apparatus that can be made compact with a simple configuration by providing a support base capable of arranging a plurality of oil generating equipment through which cracked oil generated by pyrolysis flows in a plurality of stages above and below. .
A support base 24 for supporting and fixing an liquefier equipment such as a condenser that circulates cracked oil generated by thermal decomposition and oil-water separation tanks 16 and 18, wherein the support base 24 includes: At least the condenser of the liquefier equipment is arranged at the uppermost stage, and the oil / water separation tanks 16 and 18 and the gas washing tank 26 are arranged in the space below the oily equipment, and the oil recovery tanks 17 and 19 are arranged at the lowest position. It was set as the structure to arrange.
[Selection] Figure 1

Description

  The present invention relates to a pyrolysis oil converting apparatus that generates cracked oil from a raw material such as plastic.

Conventionally, in this seed oil generator, a pyrolysis kettle containing waste plastic, tires, etc. regardless of batch type or continuous operation type is heated and melted in a heating furnace having combustion heating means such as oil or gas, and the heat The dry distillation gas generated by cracking is cooled and condensed to be liquefied to produce cracked oil. However, this seed oil generator contains a pyrolysis kettle that contains raw materials and thermally decomposes, a heating furnace having heating means such as an oil burner, a condenser (cooler) that cools and liquefies dry distillation gas generated by pyrolysis, The cracked oil produced by liquefaction is taken out as a high-quality oil, and is provided with an oil-water separation tank and an oil storage tank for collecting and storing it, and further included in the so-called undecomposed gas that has not been liquefied by the condenser. In addition, a gas cleaning tank that cleans and removes impurities is provided, and a dedicated combustion furnace that combusts the undecomposed gas after cleaning is provided (see, for example, Patent Document 1).
JP 2003-277767 A

  As described above, many liquefier equipment such as condensers are often arranged adjacent to each other along the flow of generated gas and liquid, and so-called side-by-side arrangement is mainly used. In order to recover efficiently, it is a cooling liquefaction function by a condenser, and the equipment (device) is the largest in size. Moreover, while carbonized gas and the like are easy to transfer due to the generated pressure, the generated cracked oil must be provided with a pump as a means for transferring it upwards, leading to a complicated structure. As a result, the area occupied by the installation of the oil generator becomes large and a large space is required.

  In order to solve the above-described problems, an object of the present invention is to provide a pyrolysis oil making apparatus that can be made compact with a simple structure by arranging a plurality of upper and lower stages of the oil making equipment.

  In order to achieve the above object, the pyrolysis oil converting apparatus of the present invention heats a pyrolysis kettle containing waste plastic etc. in a heating furnace equipped with heating means, and the generated dry distillation gas through a condenser. A gas cleaning tank that generates cracked oil by liquefaction, stores the cracked oil in an oil recovery tank through an oil-water separation tank, and cleans and removes impurities of undecomposed gas that has not been liquefied by the condenser And a support base for supporting and fixing the liquefier equipment such as the condenser and oil / water separation tank, the support base is configured to support the liquefier equipment in a plurality of upper and lower stages. Among them, the condenser is arranged in the uppermost stage, the oil / water separation tank and the gas washing tank are arranged in the space below the condenser, and the oil recovery tank is installed in the lowermost part. Than it is.

  According to the above means, it is possible to effectively utilize the space below the condenser which is particularly large, and the generated cracked oil can be circulated using a drop, and can be made compact with a simple configuration. It is possible to provide a pyrolysis oil converting apparatus that can be expected to have a practical effect that can reduce the occupied area for installation.

Hereinafter, description will be made with reference to FIGS. 1 to 3 showing an embodiment of the pyrolysis oil converting apparatus of the present invention.
Among them, FIG. 1 shows the overall structure of a pyrolysis oil converting apparatus that also serves as an oil generation flow shown in the direction of arrow A in the figure. The pyrolysis kettle 1 for pyrolyzing raw materials such as waste plastic is shown in detail in FIG. However, it is accommodated in the heating furnace 2 so as to be able to be taken in and out, and is burned and heated by, for example, an oil burner 3 which is permanently installed as a heating source below. The combustion exhaust gas from the heating source is discharged into the atmosphere outside the furnace through an exhaust duct 5 led out from the upper part of the heating furnace 2.

  However, in this embodiment as an oil converting apparatus, so-called dry distillation is performed in which, for example, waste plastic as a raw material supplied into the pyrolysis kettle 1 is heated and melted to gasify, and the dry distillation gas generated by the thermal decomposition is removed. A so-called primary oil generation line (a line indicated by an arrow A1 to be described later) that generates cracked oil by cooling and condensing and liquefying, and a secondary oil generation line (a line indicated by an arrow A2) that undergoes the same process. ). That is, the dry distillation gas (flow in the direction of the broken arrow A0) derived from the upper part of the pyrolysis kettle 1 flows into the reforming tank 6. Although not described in detail, the reforming tank 6 is loaded with a catalyst, and is subjected to catalytic reaction with a dry distillation gas to reduce the number of carbon atoms and impurities such as odors, thereby reforming to a high quality one. It has a function.

The dry distillation gas reformed in the reforming tank 6 is indicated by broken line arrows A1 and A2 through one of the first and second on-off valves 7 and 8 that open and close in response to operation control described later. It is configured such that it can be introduced into the primary condensing tank 9 or the secondary condensing tank 10 which functions as a condenser by following different routes branched in the direction. However, the cooling jackets 12 and 13 in which the cooling medium circulates in the directions of the arrows B1 and B2 by using, for example, the cooling tower 11 as cooling means in the condenser are externally mounted on the outer periphery of the cylindrical ventilation tanks 14 and 15. It consists of a structure and it is made to cool by the inside of the tanks 14 and 15 for ventilation | gas_flowing by circulating a dry distillation gas.
For example, the aeration tanks 14 and 15 shown in the present embodiment have three compartments 14a, 14b, 14c and 15a, 15b, 15c, which are each divided into three in the cylindrical longitudinal direction, all of which have one upper end portion. It is possible to circulate the gas by communicating the department. In the present embodiment, the condensing tanks 9 and 10 are arranged side by side in the longitudinal direction and connected and fixed to each other.

  Therefore, the cracked oil produced by cooling and condensing the dry distillation gas flowing into the condenser and liquefying the oil component is liquefied and collected on the primary side for each stage passing through each of the compartments 14a, 14b, and 14c. The oil flows out in the direction of the solid arrow A1 along the distribution line 20 and is stored in the primary oil recovery tank 17 disposed further down from the primary oil / water separation tank 16 disposed below through the oil distribution line 21. It is assumed to be configured. On the other hand, the cracked oil that has flowed out in the direction of the solid arrow A2 through the same process in the secondary compartments 15a, 15b, and 15c flows into the secondary oil / water separation tank 18 through the oil distribution line 22, and It is configured to be stored in the secondary oil recovery tank 19 via the distribution pipe 23.

  As is apparent from the above, the cracked oil produced through the condensation tanks 9 and 10 flows into the next oil / water separation tanks 16 and 18 by using the head in the subsequent flows, and the oil recovery tanks 17 and 18 19 is collected and stored. For this reason, the support base 24 is provided so as to arrange these oil generating devices in a plurality of upper and lower stages to achieve compactness. That is, the plurality of support portions 24b provided on the uppermost stage of the support base 24 (indicated by reference numeral H2 in the figure) are provided with each of the condensation tanks 9 and 10 that are the largest condensers among the oiling devices. A cylindrical outer diameter portion that is connected and integrated is supported and fixed. In this case, the dry distillation gas flowing into the condensation tanks 9 and 10 has a high temperature and high pressure even if the pyrolysis kettle 1 is installed at a low position. It can be transported regardless of whether there is any problem. Although the installation configuration of the reforming tank 6 will not be described in detail, the reforming tank 6 is supported at an appropriate position, such as being arranged and fixed next to the condensation tanks 9 and 10 at the uppermost stage H2 position of the support base 24. Can be fixed.

  Next, the oil / water separation tanks 16 and 18 are arranged on the shelf-like support portion 24a of the middle stage (reference numeral H1) of the support base 24 and with a predetermined drop in the space space below the condensing tanks 9 and 10. It is arranged and supported and fixed. In the present embodiment, which is the lowest level (symbol H0), the oil recovery tanks 17 and 19 are arranged on the installation surface 25 with a considerable drop. However, the lowermost oil recovery tanks 17, 19, etc. are not necessarily limited to being disposed within the occupation range of the support base 25 for subsequent use and handling, or conversely at the lowermost positions. It is good also as a structure which provides a shelf-like part and mounts on this.

In the figure, a broken line arrow A indicates a gas flow, and a solid line arrow A indicates an oil flow.
However, in the respective condensation tanks 9 and 10, some of the low-molecular gases are not liquefied, so that this so-called undecomposed gas flows in the directions of the broken arrows A1 and A2, and both are not condensed and have a common gas cleaning. It is configured to flow into the tank 26.
The gas cleaning tank 26 removes harmful components contained in the undecomposed gas, the details of which will be described later, and its configuration is enlarged as shown in FIG. Is supplied to a predetermined water level, and the water level is adjusted so that a slight space layer S is always formed above the water layer of the liquid W. With respect to such a gas cleaning tank 26, the tip of the gas flow conduit 27 led out from each of the condensation tanks 9 and 10 is in the liquid W and has a plurality of small holes 27a that are open. Yes.

  On the other hand, a gas flow conduit 28 on the discharge side is connected to the upper portion of the space layer S, and the other end is introduced into a gas pressure adjusting tank 29 as a gas pressure adjusting means as shown in FIG. The gas burner 4 is connected to the gas burner 4 through a gas supply pipe 30, thereby constituting a gas sending means for sending the undecomposed gas passed through the gas cleaning tank 26 to the heating furnace 2. However, the gas pressure adjusting tank 29 has a control function of detecting the gas pressure of the undecomposed gas after cleaning and sending the gas to the heating furnace 2 and burning it by the gas burner 4 when the gas pressure reaches a predetermined value. .

That is, the undecomposed gas after cleaning that has been removed from the liquid W flows from a low pressure state that is slightly higher than the atmospheric pressure, and the gas pressure has reached a predetermined value (for example, 1.0 kg / cm ² ) or more. Is detected, the gas burner 4 is operated to burn based on the detection signal. Here, the gas burner 4 will be described in detail with reference to FIG. 3. As shown in the figure, the gas burner 4 is combined with a blower 31, and the blower 31 has a cylindrical discharge port body 32 on its discharge side. The nozzle 33 connected to the gas supply pipe 30 is arranged at the center, and the tip thereof is provided facing the heating furnace 2.

  Therefore, when the gas pressure adjusting tank 29 detects the gas pressure reaching the predetermined value, the undecomposed gas is supplied to the nozzle 33 and the blower 31 is driven. Then, the air blown out from the discharge port body 32 around the nozzle 33 toward the inside of the heating furnace 2 receives the action of inducing the release of gas from the nozzle 33. Thereby, the combustion of the gas by the gas burner 4 becomes a flame blown inward vigorously and effectively heats the pyrolysis kettle 1 located substantially in the center. As described above, the gas pressure adjusting tank 29 is provided with a control means for controlling the operation of the gas burner 4 while adjusting the gas pressure to burn the undecomposed gas in the heating furnace 2 and to obtain a stable and effective thermal power. .

  On the other hand, the liquid W in the gas cleaning tank 26 can be replaced with a clean liquid at any time. For this reason, the water supply pipe 26a disposed in the upper portion is connected to a makeup water tank 34 through a water supply pump (not shown). A drainage tank 35 is connected to the lower part via a drainage pipe 26b that discharges the liquid W. The drain tank 35 is provided with a neutralizer storage section 35a that stores an alkaline neutralizer, for example, caustic soda (slaked lime), and can be charged into the drain tank 35 at any time. The drain tank 35 is connected to the evaporation tank 38 through water supply means including a water supply pipe 37 provided with a water supply pump 36, and is controlled so that an appropriate amount of water in the drain tank 35 can be supplied to the evaporation tank 38. Is done.

However, the schematic configuration of the evaporation tank 38 will be described. As shown in FIG. 1, this is attached to the vertical portion of the cylindrical exhaust duct 5 led out from the heating furnace 2 in a close contact state, and the upper end is a trumpet shape. It has a hollow cylindrical shape with a bottom expanded to be provided adjacent to the outer periphery of the exhaust duct 5. The hollow interior is capable of storing water, has an air vent 38a communicating with the outside at the upper end surface, is connected to one end of the water supply pipe 37 at the upper side, and is used for residual water treatment at the lower portion. The drain 39 and other liquid level gauges are provided. With this configuration, the water supplied into the evaporation tank 38 receives a heat from the exhaust duct 5 to evaporate and has a so-called vaporization function for releasing it into the atmosphere.
In FIG. 1, a rotatable stirrer 40 is provided in the vicinity of the inner bottom of the above-described pyrolysis kettle 1 and is driven by a motor 41 disposed on the outer top. Moreover, the recessed part 1a hollowed inwardly is formed in the outer bottom part of the thermal decomposition pot 1, and it is set as the structure which should expand a heat-transfer area.

Next, the operation of the pyrolysis oil converting apparatus having the above configuration will be described.
First, a general embodiment for converting waste plastic to oil will be described. A pyrolysis kettle 1 into which waste plastic that has been crushed as a raw material is placed and held in a heating furnace 2 is initially stored only in an oil burner 3. It is ignited and operation is started. As a result, a pyrolysis operation in which so-called dry distillation is performed to heat and melt waste plastic to gasify is started, and high-temperature combustion exhaust gas is discharged from the exhaust duct 5 to the outside of the furnace. However, the rotation operation of the stirring body 40 by driving the motor 41 promotes the thermal decomposition action by stirring and mixing the waste plastic and heating and melting it uniformly.

  In this pyrolysis operation, first, as a primary pyrolysis based on a control means (not shown), a thermal decomposition based on a temperature control up to, for example, 400 ° C. is executed, and the generated dry distillation gas is circulated in the upper part of the pyrolysis kettle 1. It flows in the direction of the broken line arrow A0 that rises in the pipeline. The dry distillation gas is then introduced into the reforming tank 6 where it is contacted with the catalyst loaded therein to reduce the number of carbons and remove unnecessary components such as odors and reformed to a high quality. The

  However, the reformed dry distillation gas flows only in the direction of the dashed arrow A1 because the first on-off valve 7 is controlled to open and the other second on-off valve 8 is closed in this primary pyrolysis, It is led to the primary condensing tank 9 which is a condenser arranged on the uppermost stage H2 of the support base 24. In the condensing tank 9, the oil component is liquefied by cooling and condensing the dry distillation gas while circulating in the aeration tank 14 surrounded by the cooling jacket 12. The cracked oil generated here hangs down the oil circulation pipe 20 in the direction of the solid arrow A1, passes through the primary oil / water separation tank 16, and further passes through the oil circulation pipe 21 to be a primary oil recovery tank as a high-quality cracked oil. 17 and is effectively used as a resource such as fuel. In this case, the decomposed oil liquefied in the aeration tank 14 uses a drop to dispose the primary oil / water separation tank 16 disposed and fixed in the lower middle stage H1, and further, the primary oil recovery tank located at the lowest H0. 17 easily recovered.

  On the other hand, the low molecular gas that could not be liquefied in the primary condensing tank 9 passes through the primary condensing tank 9 as it is, and is introduced into the gas washing tank 26 through the gas distribution pipe 27. The small hole 27a formed at the end of the gas flow pipe 27 (see FIG. 2) is opened in the liquid W of the gas cleaning tank 26, so that the gas goes underwater and escapes to the upper space layer S. There is sufficient contact with water in between. As a result, impurities such as chlorine, nitrogen and sulfur contained in the gas are replaced by water and removed, and so-called gas cleaning operation is performed. In this case, since the gas flow line 27 introduced into the gas cleaning tank 26 is opened in the liquid W, the gas is taken into the gas flow line 28 after passing through the liquid W and the air layer S. Accordingly, the communication connection between the pipes 27 and 28 is released, and the gas flows backward from the outflow side gas flow pipe 28 to the inflow side gas flow pipe 27 side in the reverse direction accompanying the fluctuation of pressure. There is nothing.

Thus, the cleaned gas is fed into the gas pressure adjusting tank 29 via the gas flow line 28 as indicated by the broken line arrow A1. However, since the gas flow pipes 27 and 28 are isolated from each other by the liquid W as described above, the gas pressure decreases and moves in a state slightly exceeding atmospheric pressure at the beginning. Therefore, the heating furnace having the gas burner 4 is detected only when the undecomposed gas that has reached the gas pressure adjusting tank 29 has been detected to have reached a predetermined pressure (predetermined value: 1.0 kg / cm ² ) from the initial low pressure. It is sent to the 2 side as fuel.

  That is, when the gas pressure adjusting tank 29 detects that the gas pressure has reached a predetermined value, the gas pressure adjusting tank 29 is allowed to flow to the gas burner 4 through the gas supply pipe 30, and the blower 31 is driven to discharge from the discharge port body 32. It is attracted by the blown air to promote the gas release from the nozzle 33 and controls to ignite and burn it. As a result, the gas is vigorously released toward the inside of the heating furnace 2 and combusts in a stable state, and the flame effectively heats the pyrolysis kettle 1 accommodated and set in the substantially central portion of the inside. When the gas pressure decreases, the gas pressure adjusting tank 29 stops the gas supply, stops the blower 31 and stops the combustion operation by the gas burner 4.

  In this way, the undecomposed gas that has not been liquefied is combusted in the heating furnace 2 at any time, contributing to the heating action of the pyrolysis kettle 1, saving fuel in the oil burner 3, and separately dedicated combustion. There is no need to provide a furnace, and this is effective in reducing the overall structure of the oil making apparatus. In addition, the undecomposed gas after cleaning can reduce the generation of harmful gas components such as dioxin during combustion, and is further burned at a high temperature in the heating furnace 2, so that it is more effective in preventing the generation of dioxin. It is.

  However, the liquid W containing impurities such as chlorine used for gas cleaning is discharged and stored in the lower drainage tank 35 through the drainage pipe 26b, while clean water from the makeup water tank 34 is supplied to the feedwater pipe 26a. Then, the water is supplied and stored in the gas cleaning tank 26, and so-called water replacement operation is performed as needed, and the liquid W in the gas cleaning tank 26 is appropriately replaced with clean water according to the degree of contamination. The water used after washing is primarily stored in the drain tank 35. In this case, a neutralizer is supplied into the drain tank 35. That is, slaked lime (caustic soda) that is effective as a neutralizing agent for impurities such as chlorine contained in the washed water is stored in the neutralizing agent storage part 35a, and is primarily stored in the drain tank 35. In the meantime, it is introduced and neutralized.

  Then, the neutralized water is sent to the evaporation tank 38 through the water supply pipe 37 based on the driving of the drain pump 36 which is a water supply means. Since the evaporation tank 38 is always heated by receiving exhaust heat from the exhaust duct 5 during the thermal decomposition operation, the water supplied to the evaporation tank 38 is promoted to evaporate. By this vaporization process, the generated steam is released into the atmosphere from the vent 38a at the upper end. In addition, when processing the residual water in the evaporation tank 38, it can discharge | emit from the drain 39 suitably.

  However, when the operation mainly consisting of oil treatment based on temperature control at 400 ° C. is completed as the primary pyrolysis, the control means continues to perform substantially the same process 2 based on temperature control raised to, for example, 800 ° C. The next pyrolysis operation is performed. The operation based on the high temperature control of 400 to 800 degrees C is performed without supplying new raw materials. Incidentally, at this time, in the pyrolysis kettle 1, undecomposed, for example, high-boiling-point non-decomposable substances and the like in the primary pyrolysis operation stay as a lump residue. Therefore, in the secondary pyrolysis operation, the residue is further thermally decomposed by high-temperature heating.

  Thus, dry distillation gas is newly generated by this high temperature thermal decomposition. This gas flows in the direction of the broken line arrow A0 and is reformed through the reforming tank 6 in the same manner as described above, and then flows to the broken line arrow A2 side based on the fact that only the second on-off valve 8 is controlled to open. Thereafter, the oil conversion process proceeds based on the same process and action as described above. That is, the dry distillation gas is generated as cracked oil through the secondary condensation tank 10 as the condenser located at the uppermost stage H2, and passes through the secondary oil / water separation tank 18 located at the middle stage H1, as shown by the solid line arrow A2. The oil is flown into and stored in the secondary oil recovery tank 19 of H0, and the cracked oil quickly circulates between these liquefied equipment using a drop, and can be arranged in a simple arrangement of upper and lower groups. .

  However, in the primary oil production line indicated by the arrow A1, the high-quality oil is produced based on the oil treatment up to 400 ° C., whereas in the secondary oil production line indicated by the arrow A2, the high temperature (400 The carbonized oil containing a large amount of carbon components by pyrolysis (˜800 degrees C) is mainly produced and stored. Therefore, since this carbonized oil is inappropriate as a general fuel, it is put into the pyrolysis vessel 1 together with, for example, waste plastic as a raw material, and utilized to promote thermal decomposition of the waste plastic. The residue in the pyrolysis kettle 1 is in a so-called powder state in which the oil is significantly removed and carbonized by thermal decomposition at a high temperature.

  On the other hand, the undecomposed gas that has not been liquefied in the secondary condensing tank 10 is introduced into the gas cleaning tank 26 via the flow conduit 27 and discharged into the liquid W water as described above. Then, while the gas passes through from the water to the upper space layer S, impurities such as chlorine are replaced by the water and removed, whereby the gas cleaning operation is performed. Subsequently, the undecomposed gas after cleaning is released from the gas burner 4 at any time by control based on the gas pressure through the gas flow line 28 and the gas pressure adjusting tank 29 constituting the gas sending means in the direction of the broken arrow A2. A stable combustion process is performed.

  On the other hand, the contaminated water containing chlorine after being used for gas cleaning is replaced with clean water according to the degree of contamination in the same manner as described above, and the contaminated water is temporarily stored in the drain tank 35 and is neutralized. After being neutralized at, the gas is sent to the evaporation tank 38 and subjected to a vaporization process by exhaust heat. Therefore, it is easy to handle the liquid treatment used for the cleaning, and it is possible to reduce the size of the apparatus and to make it compact.

As described above, the present embodiment has the following effects.
In the oiling device that cools and condenses the dry distillation gas generated by pyrolyzing waste plastics, etc., and liquefies it, and still oils through the primary and secondary condensation tanks 9 and 10 as condensers. Impurities including chlorine that are harmful to the undecomposed gas that could not be removed are removed while passing through the liquid W in the gas cleaning tank 26. Therefore, the gas from which harmful components have been removed is supplied to the gas burner 4 and completely combusted in the heating furnace 2, and can contribute to the heating action of the pyrolysis kettle 1 and is economical. In addition, it can be processed without generating harmful gas components such as dioxin in addition to the normal combustion exhaust gas during combustion, and is particularly burned at a high temperature in the heating furnace 2, thus preventing the generation of dioxins. In addition, the so-called environment-friendly undecomposed gas treatment can be performed.

  In addition, since the undissolved gas is completely disconnected from the gas circulation pipes 27 and 28 by the liquid W in the gas cleaning tank 26, the gas does not cause a reverse flow phenomenon even when the pressure fluctuates. For this reason, since the undecomposed gas that has passed through the gas cleaning tank 26 is initially at a low pressure, it is not easy to immediately send it directly to the heating furnace 2 and burn it in the gas burner 4. In other words, because of the low pressure, it is weak and inadequate as a gas flame, and it cannot reach until the pyrolysis kettle 1 is heated effectively, or there is a risk of backfire, so a stable combustion action cannot be expected. .

  However, in this embodiment, the gas pressure adjusting tank 29 provided as a gas adjusting means sends the gas pressure to the gas burner 4 and drives the blower 31 on condition that the low-pressure undecomposed gas after cleaning reaches a predetermined value. And let it burn. As a result, a stable combustion action is always obtained, and it can be effectively contributed as a heating action of the pyrolysis vessel 1 and an economical thermolysis operation can be expected.

  On the other hand, the water containing chlorine after washing the undecomposed gas is appropriately replaced with clean water, and neutralized with slaked lime (caustic soda) in the drainage tank 35 that can be primarily stored during the wastewater treatment. After neutralization with the agent, a vaporization process is performed in which the gas is sent to the evaporation tank 38, evaporated by exhaust heat, and released into the atmosphere. Incidentally, since the exhaust duct 5 provided with the evaporation tank 38 reaches, for example, about 700 to 800 ° C. by the high-temperature combustion exhaust gas, the water in the evaporation tank 38 is easily vaporized and is particularly harmful. The components can be processed without being discharged into the air, and the exhaust heat can be used effectively, which simplifies the apparatus and is advantageous in terms of cost.

  And the support base 24 which supports and fixes the condensation tanks 9 and 10 and the oil / water separation tanks 16 and 18 which are the condensers after the generation of the cracked oil is used as a flow of the cracked oil. The upper and lower condenser tanks 9 and 10 are arranged in the uppermost stage H2, and the oil-water separation tank 16 is disposed in the space below the middle stage H1. , 18 and the gas cleaning tank 26 are arranged, and the oil storage tanks 17 and 19 and the drainage tank 35 are installed at the lowest level H0, so that a so-called vertical three-stage arrangement is adopted.

  As a result, the condenser with the largest size can be placed at the top and the lower space can be used effectively for the placement of other liquefier equipment. Can be configured. In this case, even if the condenser is at a higher position than the heating furnace 2, for example, the pressure of the dry distillation gas is high and flows while sufficiently rising. In addition, since the liquefier equipment is arranged in the order in which the cracked oil flows, the cracked oil circulation using the head flows smoothly, and a pump or the like can be provided with a simple configuration as much as possible. Further, the undecomposed gas that has not been liquefied and has passed through the gas cleaning tank 26 is combusted in the heating furnace 2, and the liquid used for the gas cleaning is finally vaporized using the exhaust heat of the evaporation tank 38. Since it did in this way, compared with the case where a processing equipment is provided separately, even if it is the whole structure of an oil-ized apparatus, it has the advantage that it can fully achieve the simplification and compactness of a structure, and handling becomes also very easy.

  The present invention is not limited to the embodiment described above and shown in the drawings. For example, the gas cleaning tank 26 is configured to come into contact with water by allowing the gas to pass through the water. It is also possible to carry out a modification so as to remove impurities by spraying (hereinafter referred to as showering method). FIG. 4 shows a schematic configuration thereof, and the gas cleaning tank 40 is disposed in the support portion 24a of the middle stage H1 of the support base 25, and the undecomposed gas flowing into the tank from the gas distribution pipe 27 is By passing through the mist-like spray blown from the plurality of spray nozzles 41 provided in the tank, it comes into contact with water, and impurities such as chlorine are removed and washed.

  The drain pipe 26b is connected in communication with the drain tank 35 positioned below, and the drainage treatment using the head is performed in the same manner as described above. Further, the cleaned gas is transferred to the gas pressure tank 29 through the gas flow pipe 28, for example. In this case, since the gas contains a lot of moisture, for example, the gas pressure tank 29 is adjusted to a dry and appropriate gas state by adding a drying function, and then sent to the heating furnace 2 to execute the combustion process. . In this manner, impurities can be removed and cleaned effectively even in the showering system, and can be provided in a compact configuration with a simple configuration including treatment of water and gas after the cleaning. The cleaning operation is such that the cleaning water is sprayed from the spray nozzle 41 while circulating the cleaning water, and can be replaced with clean water as needed. Various means for removing impurities by contact with water are available. It can be implemented with changes.

  In addition, for example, it is not necessary to configure the primary and secondary oil production lines as in the above-described embodiment, and even a primary oil production line, that is, an oil generator having one condenser may be used. Also, the form of the heating source may be an oil burner and a gas burner that are used together for thermal decomposition, and in addition to this, undecomposed gas may be combusted as needed, so that it does not depart from the gist of the present invention. Various modifications can be made within the range.

The block diagram of the whole oil-ized apparatus which shows one Example of this invention Enlarged sectional view schematically showing the configuration of the gas cleaning tank Expanded sectional view schematically showing the configuration of the gas burner FIG. 2 equivalent view showing another modified example

Explanation of symbols

  In the figure, 1 is a pyrolysis kettle, 2 is a heating furnace, 3 is an oil burner, 4 is a gas burner, 5 is an exhaust duct, 9 and 10 are primary and secondary condensation tanks (condensers), 11 is a cooling tower, 18 is a primary and secondary oil / water separation tank, 17 and 19 are primary and secondary oil recovery tanks, 24 is a support base, 26 and 40 are gas cleaning tanks, 29 is a gas pressure adjustment tank, 31 is a blower, and Reference numeral 38 denotes an evaporation tank.

Claims (1)

A pyrolysis kettle containing waste plastic is heated in a heating furnace equipped with heating means, and the generated dry distillation gas is liquefied through a condenser to produce cracked oil. It is stored in an oil recovery tank, and is equipped with a gas cleaning tank that cleans and removes impurities of undecomposed gas that has not passed through the condenser and has passed through, and is equipped with oiling equipment such as the condenser and oil-water separation tank. In those equipped with a support base to support and fix,
The support base is configured to support the oil generator equipment in a plurality of upper and lower stages, of which the condenser is disposed at the uppermost stage, and the oil / water separation tank and the gas washing tank are disposed in a space below the condenser. A pyrolysis oil converting apparatus characterized in that the oil recovery tank is installed at the lowest position.

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