Pyrolysis treatment system, pyrolysis module, shutter module, and containment container

Abstract

This invention provides a pyrolysis treatment system with excellent maintainability. [Solution] The pyrolysis treatment system of the present invention comprises the following components: a containment container, multiple pyrolysis modules, and multiple shutter modules. The containment container is a container for containing and transporting the material to be subjected to pyrolysis treatment. Multiple pyrolysis modules are installed with their transport openings side by side along the transport path of the containment container, and each module is responsible for performing the pyrolysis treatment individually. Multiple shutter modules are inserted individually at positions that shield the transport openings of the pyrolysis modules, opening when the containment container is transported and closing during the pyrolysis treatment.

Description

Technical Field

[0001] The present invention relates to the technology of pyrolysis treatment.

Background Art

[0002] Conventionally, a pyrolysis treatment system for pyrolyzing waste and the like in a furnace has been known.

[0003] For example, Patent Document 1 discloses a technology to the effect that “in a continuous furnace, while loading a waste storage container on a transfer conveyor and conveying it, a carbonization treatment apparatus (pyrolysis treatment system) that sequentially performs pyrolysis treatment” is disclosed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Generally, in a pyrolysis treatment system, oil and residue are generated along with the pyrolysis treatment of waste. The continuous furnace and the intermediate transfer path are exposed to these oil and residue and are contaminated, such as being baked on. Therefore, in order to maintain the performance of the pyrolysis treatment system, it is preferable to carefully clean the continuous furnace and the intermediate transfer path by, for example, periodically and massively disassembling the entire system.

[0006] By the way, the drawings of Patent Document 1 omit the components originally necessary for the pyrolysis treatment system and are simplified. In an actual pyrolysis treatment system, a large number of accessory devices and pipes for connecting individual furnaces are required across these multi-stage continuous furnaces. Therefore, in the actual pyrolysis treatment system, individual furnaces are complicatedly piped with respect to a large number of accessory devices, and there is room for improvement in terms of difficulty of disassembly maintenance.

[0007] Therefore, the present invention aims to provide a pyrolysis treatment system with excellent maintainability. [Means for solving the problem]

[0008] The pyrolysis treatment system of the present invention comprises the following components: a containment container, multiple pyrolysis modules, and multiple shutter modules.

[0009] The containment container is a container used to contain and transport the material to be subjected to thermal decomposition treatment. Multiple pyrolysis modules are installed with their transport openings lined up along the transport path of the containment container, and each module is responsible for performing the pyrolysis process individually.

[0010] Multiple shutter modules are individually inserted into positions that shield the transport opening of the pyrolysis module and are connected without gaps. They open when transporting the containment container and close during the pyrolysis process. [Effects of the Invention]

[0011] This invention modularizes a pyrolysis treatment system into a form in which pyrolysis modules are connected.

[0012] This modular design makes it easier to separate multiple pyrolysis modules, clean them after separation, and assemble them.

[0013] Therefore, the present invention makes it possible to provide a pyrolysis treatment system with excellent maintainability.

[0014] Further details regarding issues, configuration, and effects other than those mentioned above will be explained in the embodiments described later. [Brief explanation of the drawing]

[0015] [Figure 1] Figure 1 is an example of the appearance of the pyrolysis treatment system 100. [Figure 2]FIG. 2 is a diagram illustrating a common configuration of the pyrolysis module 300. [Figure 3] FIG. 3 is a diagram illustrating a common configuration of the shutter module 400. [Figure 4] FIG. 4 is a diagram illustrating the configuration of the storage container 200. [Figure 5] FIG. 5 is a diagram for explaining the operation (first half) of the transport mechanism 303. [Figure 6] FIG. 6 is a diagram for explaining the operation (second half) of the transport mechanism 303. [Figure 7] FIG. 7 is a diagram illustrating the piping system of the pyrolysis processing system 100.

MODE FOR CARRYING OUT THE INVENTION

[0016] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

EXAMPLE

[0017] 《External Configuration of the Pyrolysis Processing System 100》 FIG. 1 is a diagram illustrating the external appearance of the pyrolysis processing system 100. In FIG. 1, the pyrolysis processing system 100 includes a storage container 200, a pyrolysis module 300, a preheating furnace 300a, a heat dissipation furnace 300b, a shutter module 400, and shared equipment 500.

[0018] The storage container 200 is a container with a cart for storing and transporting an object to be pyrolyzed (such as organic waste).

[0019] The pyrolysis module 300 is installed with transfer ports 301 arranged side by side on the transfer path R of the storage container 200, and is a module that shares the pyrolysis process in individual units. The detailed common configuration of these pyrolysis modules 300 will be described later.

[0020] Of these multiple pyrolysis modules 300, the first pyrolysis module 300 is designated as the pre-furnace 300a. The pre-furnace 300a performs a deoxygenation process by filling the furnace with inert gas, thereby removing oxygen that has entered from the outside along with the containment container 200. It also performs a preheating process by using heated inert gas and a furnace heater 306 (described later) to preheat the target material prior to the subsequent pyrolysis process. Note that the pre-furnace 300a does not perform exhaust treatment associated with the pyrolysis process, as it is responsible for the preliminary operation of the pyrolysis process. Therefore, as shown in Figure 1, the pre-furnace 300a may omit the unit parts (devices, piping, etc.) necessary for exhaust treatment from the common configuration of the pyrolysis modules 300 (described later).

[0021] Furthermore, among the multiple pyrolysis modules 300, the last pyrolysis module 300 becomes a heat dissipation furnace 300b. The heat dissipation furnace 300b is responsible for dissipating heat, which cools the residue (such as charred material) that has become hot due to the pyrolysis process to a temperature where it will not spontaneously ignite due to the external oxygen environment, by circulating an unheated (e.g., room temperature) inert gas inside. Since the heat dissipation furnace 300b is responsible for the post-treatment of the pyrolysis process, it does not perform exhaust treatment associated with the pyrolysis process. Therefore, as shown in Figure 1, the heat dissipation furnace 300b may omit the unit parts (devices, piping, etc.) necessary for exhaust treatment from the common configuration of the pyrolysis modules 300 (described later).

[0022] The shutter modules 400 are individually inserted and connected to the transport opening 301 of the pyrolysis module 300 (including the pre-furnace 300a and the heat dissipation furnace 300b) at positions that shield it. The shutter modules 400 open when transporting the containment container 200 and close during the pyrolysis process. The detailed common configuration of these shutter modules 400 will be described later.

[0023] Of these multiple shutter modules 400, an entrance shutter 400a is placed at the front and an exit shutter 400b is placed at the rear. These may share a common configuration with the shutter module 400. The entrance shutter 400a and exit shutter 400b may be customized for the purpose of being combined with external loading equipment (such as loading conveyors or loading vehicles) or external unloading equipment (such as unloading conveyors or unloading vehicles) for the containment container 200.

[0024] The shared facilities 500 include a boiler 510, a nitrogen generator 520, a cooling tower 530, and a control computer 580.

[0025] The boiler 510 heats water to generate steam, which is then supplied to each pyrolysis module 300. In Example 1, the boiler 510 is provided separately as a shared facility 500, but each module of the pyrolysis module 300 may be equipped with a heater that heats water to generate steam (for example, integrated with the steam heater 305 described later).

[0026] The nitrogen generator 520 outputs nitrogen gas (a type of inert gas) and supplies it to each pyrolysis module 300. In Example 1, the nitrogen generator 520 is provided separately as a shared facility 500, but each pyrolysis module 300 may be equipped with a device that outputs inert gas.

[0027] The cooling tower 530 generates the coolant (such as water) necessary for treating the exhaust gas from the pyrolysis module 300 by circulating it.

[0028] The control computer 580 is a command center that controls the operation of each part of the pyrolysis processing system 100.

[0029] As shown in Figure 7, which will be described later, other shared equipment 500 includes a circulation pump 530a, an oil supply pump 540a, an oil tank 540, an off-gas tank 550, a condenser 560, and a wastewater treatment device 570.

[0030] The circulation pump 530a circulates the coolant from the cooling tower 530 to the cooling piping for the pyrolysis module 300.

[0031] The oil supply pump 540a recovers oil from the pyrolysis module 300. The oil tank 540 stores the oil recovered by the oil supply pump 540a. The off-gas tank 550 separates and recovers highly volatile gases from the exhaust of the pyrolysis module 300.

[0032] The condenser 560 condenses the volume of the wastewater collected via the oil-water separator 314 and the off-gas tank 550 by evaporating the water, which makes up the majority of the wastewater.

[0033] The wastewater treatment device 570 processes the wastewater that has passed through the condenser 560 into a state that can be discharged. Next, we will describe the components of the pyrolysis treatment system 100.

[0034] Common configuration of the pyrolysis module 300 Figure 2 illustrates the common configuration of the pyrolysis module 300. In Figure 2, the pyrolysis module 300 includes a processing chamber 302, a transport mechanism 303, an inert gas heater 304, a steam heater 305, a furnace heater 306, and an air supply piping unit 307 as a mechanism for pyrolyzing the target material.

[0035] The processing chamber 302 is formed as a processing space for pyrolysis by shielding the transport opening 301 with a shutter module 400 while the containment container 200 is being brought in.

[0036] The transport mechanism 303 transports the containers 200 sequentially by bringing them into the processing chamber 302 and unloading them from the processing chamber 302. Details of the operation of the transport mechanism 303 will be described later.

[0037] The inert gas heater 304 heats and controls the inert gas according to the set temperature for each individual pyrolysis process, and then supplies it to the processing chamber 302 via the discharge nozzle 302a.

[0038] The steam heater 305 heats and controls the steam according to the set temperature for each individual pyrolysis process, and then supplies it to the processing chamber 302 via the discharge nozzle 302a.

[0039] The furnace heater 306 controls the heating of the processing chamber 302 according to the set temperature for each individual pyrolysis process.

[0040] The air supply piping unit 307 is a group of pipes attached to the inert gas heater 304 and the steam heater 305, etc., for supplying air to the treatment chamber 302. The air supply piping unit 307 is unitized so that it can be connected to and disconnected from multiple pyrolysis modules 300 and shared equipment 500 by connection plugs C (see Figure 7). The specific unit configuration of this air supply piping unit 307 is illustrated in detail in Figure 7.

[0041] Furthermore, the pyrolysis module 300 includes a catalyst filter 310, a cooling chamber 311, a gas-liquid separation unit 312, a gas supply pump 313, an oil-water separation unit 314, and an exhaust treatment piping unit 315 as components for treating the exhaust gas from the pyrolysis process.

[0042] The catalytic filter 310 takes in exhaust gas from the pyrolysis treatment from the treatment chamber 302 and performs catalytic purification treatment.

[0043] The cooling chamber 311 cools the exhaust gas that has passed through the catalytic filter 310 and outputs a gas-liquid mixture.

[0044] The gas-liquid separation unit 312 separates the gas-liquid mixture that has passed through the cooling chamber 311 into gas and liquid. This gas-liquid separation unit 312 includes a first gas-liquid separation tank 312a and a second gas-liquid separation tank 312b.

[0045] The first gas-liquid separation tank 312a precipitates terephthalic acid from the gas-liquid mixture that has passed through the cooling chamber 311 and mixes it into the liquid. Terephthalic acid in the exhaust gas, which is produced by the thermal decomposition of PET resin, changes directly to a solid phase during cooling without taking on a liquid phase. Therefore, the first gas-liquid separation tank 312a, which is adjusted to the precipitation temperature of terephthalic acid, is provided to recover the terephthalic acid.

[0046] The second gas-liquid separation tank 312b receives the residual gas from the first gas-liquid separation tank 312a and separates the remaining liquid.

[0047] The gas supply pump 313 sends the gas remaining in the gas-liquid separation section 312 (second gas-liquid separation tank 312b in Example 1) to the off-gas tank 550.

[0048] The oil-water separation unit 314 separates the liquid separated in the gas-liquid separation unit 312 into oil and water. In Example 1, the oil-water separation unit 314 includes a first oil-water separation tank 314a and a second oil-water separation tank 314b. The first oil-water separation tank 314a separates the liquid that has passed through the first gas-liquid separation tank 312a into oil and water. The second oil-water separation tank 314b separates the liquid that has passed through the second gas-liquid separation tank 312b into oil and water. Thus, by separately providing the first oil-water separation tank 314a, the terephthalic acid precipitated in the first gas-liquid separation tank 312a may be separated and recovered.

[0049] The exhaust treatment piping unit 315 is a group of pipes attached to the catalytic filter 310, cooling chamber 311, gas-liquid separation unit 312, gas supply pump 313, and oil-water separation unit 314, etc., for treating the exhaust gas from the treatment chamber 302. The exhaust treatment piping unit 315 is unitized so that it can be connected to and separated from the pyrolysis module 300 and the shared equipment 500 by connection plugs C (see Figure 7). The specific unit configuration of this exhaust treatment piping unit 315 is specifically illustrated in Figure 7.

[0050] Common configuration of Shutter Module 400 Next, we will explain the common configuration of the shutter module 400. Figure 3 is a diagram illustrating a common configuration of the shutter module 400. In Figure 3, the shutter module 400 comprises an outer frame unit 401, an inner frame unit 403, an inner frame drive mechanism 404, and a widening mechanism 405.

[0051] The outer frame unit 401 consists of an outer frame that surrounds the hollow internal space S. This outer frame is provided with an opening that serves as a passage 402, corresponding to the transport path R (see Figure 1) of the containment container 200.

[0052] The inner frame unit 403 opens and closes the passageway 402 by moving through the internal space S of the outer frame unit 401.

[0053] The inner frame drive mechanism 404 is a mechanism for moving the inner frame unit 403. In Embodiment 1, the inner frame drive mechanism 404 comprises a drive motor 404a, a slide conversion mechanism 404b, and an upper and lower arm 404c. The forward / reverse rotational motion of the drive motor 404a is converted into an upward / downward sliding motion via the slide conversion mechanism 404b. This sliding motion is transmitted to the inner frame unit 403 via the upper and lower arm 404c, causing the inner frame unit 403 to rise / fall.

[0054] The widening mechanism 405 widens the inner frame unit 403 when the inner frame unit 403 closes the passage 402. In Embodiment 1, a cam mechanism is used as the widening mechanism 405. With the lower end of the inner frame unit 403 in contact with the inner bottom surface 406 of the outer frame unit 401, the upper and lower arms 404c descend further, causing the cam mechanism (widening mechanism 405) to act and widen the inner frame unit 403. This widening operation of the widening mechanism 405 causes the inner frame unit 403 to brace against the opening of the passage 402 in the internal space S of the outer frame unit 401, thereby sealing the transport port 301 of the pyrolysis module 300.

[0055] 《Configuration of the containment container 200》 Next, we will explain the configuration of the containment container 200. Figure 4 is a diagram illustrating the configuration of the containment container 200. In Figure 4, the containment container 200 comprises a bottom portion 202, a frame portion 203, a perforated basket portion 204, a heat circulation box 205, a front engaging portion 210a, and a rear engaging portion 210b.

[0056] The bottom portion 202 supports a tray 201 at the bottom of the container 200, which receives the residue that falls off during the thermal decomposition process.

[0057] The frame section 203 is erected from the periphery of the bottom section 202 and constitutes the housing framework of the containment container 200.

[0058] The perforated cage section 204 surrounds the sides and bottom with its perforated surface and is attached to the frame section 203 while suspended above the bottom section 202, and contains the material to be subjected to thermal decomposition treatment.

[0059] The heat circulation boxes 205 are placed at one or more partition positions in the porous cage section 204. The number of heat circulation boxes 205 is adjusted according to the internal volume of the porous cage section 204. The inside of the heat circulation box 205 has a hollow space 205s. Such a heat circulation box 205 has a porous side wall 205a on the side portion that is in contact with the object, and a sealing wall 205b on the top portion.

[0060] Superheated steam or superheated inert gas is injected into the hollow space 205s of the heat circulation box 205 from discharge nozzles 302a on the left and right inner walls of the processing chamber 302. The injected superheated steam or superheated inert gas is blown out from the porous side wall 205a when its top surface is sealed by the sealing wall 205b. The blown-out superheated steam or superheated inert gas circulates by passing through the inner part of the object contained in the porous cage section 204, thereby accelerating the thermal decomposition treatment of the object.

[0061] Furthermore, the amount of air blown out of the porous side wall 205a may be increased by sealing the bottom surface of the heat circulation box 205 as well.

[0062] 《Operation Description of the Conveyor Mechanism 303》 Next, we will explain the operation of the transport mechanism 303, which is provided in each module of the pyrolysis module 300.

[0063] Figures 5 and 6 illustrate the operation of the transport mechanism 303. The operation of the transport mechanism 303 will be described below in the order of the operation steps shown in these figures.

[0064] Step S1: In the processing chamber 302, which contains the front half of the containment container 200 (approximately half of the front half in Figure 5), the control computer 580 engages the transport mechanism 303 with the front engagement portion 210a.

[0065] Step S2: With the transport mechanism 303 engaged with the front engagement portion 210a, the control computer 580 moves the transport mechanism 303 forward until the entire containment container 200 is placed in the processing chamber 302. The control computer 580 closes the open shutter module 400 to form the processing space for the pyrolysis treatment. In this state, the control computer 580 supplies heated steam and inert gas to the processing chamber 302 to perform the pyrolysis treatment, and also performs the associated exhaust treatment.

[0066] Step S3: In the processing chamber 302 during or after the pyrolysis process, the control computer 580 moves the transport mechanism 303 backward, thereby moving it away from the front engagement portion 210a and towards the rear engagement portion 210b.

[0067] Step S4: The transport mechanism 303 engages with the rear engaging portion 210b by being flipped up at the front end of the rear engaging portion 210b and moving backward. The control computer 580 opens the shutter module 400 after the exhaust treatment is complete.

[0068] Step S5: With the transport mechanism 303 engaged with the rear engagement portion 210b, the control computer 580 sequentially advances the transport mechanism 303, so that the front side of the container 200 (approximately half of the front side in Figure 6) is advanced to the next processing chamber 302.

[0069] Step S6: In the next processing chamber 302, the transport mechanism 303 is flipped up by the front end of the front engagement portion 210a, turns around to the rear, and engages with the front engagement portion 210a.

[0070] Step S7: The control computer 580 moves the transport mechanism 303, which has advanced the containment container 200, backward.

[0071] Step S8: The transport mechanism 303 is flipped up by the front end of the front engaging portion 210a, turns around to the rear, and engages with the front engaging portion 210a.

[0072] By repeating the above-described operations (steps S1 to S8) for each processing chamber 302, the transport mechanism 303 achieves the function of transporting the containment containers 200 sequentially, independently of each module of the pyrolysis module 300.

[0073] Description of the air supply piping unit 307 and the exhaust piping unit 315. Next, we will describe the piping units (air supply piping unit 307 and exhaust piping unit 315) that are configured as modules of the pyrolysis module 300.

[0074] Figure 7 is an example diagram illustrating the piping system of the pyrolysis treatment system 100. The piping units of the pyrolysis module 300 will be described below, system by system, with reference to Figure 7.

[0075] (1) Piping system of boiler 510 The piping of the boiler 510 is connected to the corresponding connection plug C of the air supply treatment piping unit 307 of the multiple pyrolysis modules 300. Steam from the boiler 510 is heated by the steam heater 305 via the piping of this air supply treatment piping unit 307 and injected as superheated steam from the discharge nozzle 302a in the treatment chamber 302.

[0076] (2) Piping system for nitrogen generator 520 The piping of the nitrogen generator 520 is connected to the corresponding connection plug C of the air supply treatment piping unit 307 of the multiple pyrolysis modules 300. Nitrogen gas (a type of inert gas) from the nitrogen generator 520 is heated by the inert gas heater 304 via the piping of this air supply treatment piping unit 307 and injected as heated inert gas from the discharge nozzle 302a in the treatment chamber 302.

[0077] (3) Piping system of cooling tower 530 The piping of the cooling tower 530 is connected to the corresponding connection plugs C of the exhaust treatment piping units 315 of the multiple pyrolysis modules 300. The cooling tower 530 cools the coolant by circulating outside air and by the heat of vaporization. This coolant circulates through the cooling piping of the exhaust treatment piping unit 315 to the cooling chamber 311 and the gas-liquid separation unit 312 (first gas-liquid separation tank 312a and second gas-liquid separation tank 312b). After circulating, the coolant returns to the cooling tower 530 by the circulation pump 530a after passing through the corresponding connection plugs C of the exhaust treatment piping unit 315.

[0078] (4) Exhaust piping system of processing chamber 302 The exhaust pipes of the processing chamber 302 are connected to the corresponding pipes of the exhaust treatment piping units 315 of the multiple pyrolysis modules 300. The steam exhausted from the processing chamber 302 contains water and oil generated by the pyrolysis treatment of the target material. These steams are purified by the catalytic filter 310 via the piping of the exhaust treatment piping unit 315. The purified exhaust then enters the cooling chamber 311 via the piping of the exhaust treatment piping unit 315. In the cooling chamber 311, the heat of the steam is cooled by the coolant, and then it enters the first gas-liquid separator 312a via the exhaust treatment piping unit 315. In the first gas-liquid separator 312a, the steam is cooled by the coolant to the precipitation temperature of terephthalic acid. Inside the first gas-liquid separator 312a, the precipitated terephthalic acid mixes with the liquid. Meanwhile, the gas remaining in the first gas-liquid separator 312a enters the second gas-liquid separator 312b. In the second gas-liquid separation tank 312b, the gas is further cooled by a cooling liquid and separated into gas and liquid.

[0079] (5) Exhaust piping system for the second gas-liquid separation tank 312b The gas remaining in the second gas-liquid separation tank 312b is drawn into the gas supply pump 313 via the corresponding piping of the exhaust treatment piping unit 315. The output of the gas supply pump 313 is connected to the off-gas tank 550 via the corresponding connection plugs C of the exhaust treatment piping units 315 of the multiple pyrolysis modules 300. In the off-gas tank 550, highly volatile gases are extracted and stored. Such highly volatile gases may be used as fuel for the boiler 510, etc. Meanwhile, the moisture stored in the off-gas tank 550 is sent to the condenser 560.

[0080] (6) Liquid piping system of the first gas-liquid separator 312a and the second gas-liquid separator 312b The liquids separated in the first gas-liquid separator 312a and the second gas-liquid separator 312b enter the first oil-water separator 314a and the second oil-water separator 314b, respectively, via the corresponding piping of the exhaust treatment piping unit 315. In the first oil-water separator 314a and the second oil-water separator 314b, the liquids are separated into oil and water based on their specific gravity.

[0081] (7) Piping system for the oil in the first oil-water separator 314a and the second oil-water separator 314b The oil separated in the first oil-water separator 314a and the second oil-water separator 314b is drawn into the oil supply pump 540a via the corresponding connection plug C of the exhaust treatment piping unit 315. The oil supply pump 540a draws in the oil each time the amount of oil in an individual pyrolysis module 300 reaches a predetermined accumulation amount and stores it in the oil tank 540.

[0082] (8) Piping system for moisture in the first oil-water separator 314a and the second oil-water separator 314b The water separated in the first oil-water separator 314a and the second oil-water separator 314b is discharged to the condenser 560 and collected via the corresponding connection plugs C of the exhaust treatment piping unit 315. The condenser 560 reduces the volume of water collected from multiple pyrolysis modules 300 by evaporation. The water whose volume has been reduced in the condenser 560 is treated in the wastewater treatment device 570 and then discharged.

[0083] Effects of Example 1 Example 1 achieves the following effects through the configuration and operation described above.

[0084] (1) In Example 1, the pyrolysis treatment system 100 is configured by connecting multiple pyrolysis modules 300 in modular units. This modularization makes it easy to separate the multiple pyrolysis modules 300, clean the modules after separation, and assemble them. Therefore, Example 1 is superior in that it realizes a pyrolysis treatment system 100 with good maintainability.

[0085] (2) In Example 1, the shutter module 400 is configured as a modular unit that can be connected to and separated from each of the pyrolysis modules 300, thereby realizing the pyrolysis treatment system 100. By modularizing the shutter module 400 as an independent unit from the pyrolysis module 300 in this way, it becomes easy to separate the shutter module 400 from the pyrolysis module 300, and it becomes possible to clean both modules separately after separation. Therefore, Example 1 is superior in that the shutter module 400 is also easy to maintain.

[0086] (3) In Example 1, the leading pyrolysis module 300 is designated as a preliminary furnace 300a, which is responsible for deoxygenation and preheating. In the deoxygenation process, oxygen that has entered from the outside along with the containment container 200 is removed from the furnace by filling the preliminary furnace 300a with inert gas. Furthermore, in the preheating process, the heated inert gas is circulated around the object to preheat it in advance of the subsequent pyrolysis process. Thus, Example 1 is superior in that the leading pyrolysis module 300 takes on the role of the preliminary furnace 300a, allowing the pyrolysis process to be started smoothly and without delay in a pipeline manner.

[0087] (4) In Example 1, the pyrolysis module 300 located at the rear is designated as a heat dissipation furnace 300b, which is responsible for the heat dissipation process. In this heat dissipation process, the residue, which has become hot due to the pyrolysis process, is cooled in a deoxygenated environment by circulating an unheated inert gas inside. This prevents situations such as spontaneous combustion of the residue (carbonized material) after it is discharged due to contact with the external oxygen environment. Thus, Example 1 is superior in that the pyrolysis module 300 located at the rear takes on the role of the heat dissipation furnace 300b, allowing the pyrolysis process to be completed smoothly and without delay in a pipeline manner.

[0088] (5) In conventional pyrolysis processes, the piping between continuous furnaces is complex, so changing the number of processing stages in the pyrolysis process requires a complex rearrangement of the piping between the continuous furnaces. In contrast, in Example 1, the intermediate pyrolysis module 300 and shutter module 400 can be separated into module units. Therefore, Example 1 is superior in that the number of processing stages in the pyrolysis process can be easily changed by inserting or removing these modules.

[0089] (6) In Example 1, the pyrolysis module 300 includes a processing chamber 302, a transport mechanism 303, an inert gas heater 304, a steam heater 305, a furnace heater 306, and an air supply piping unit 307. In particular, the air supply piping unit 307 is a group of pipes attached to the inert gas heater 304 and the steam heater 305 for supplying air to the processing chamber 302. These piping groups are unitized so that they can be connected and separated between multiple pyrolysis modules 300 via corresponding connection plugs C (see Figure 7). By unitizing the air supply piping group into units of the pyrolysis module 300 in this way, it becomes easier to separate the piping of each pyrolysis module 300, and to clean and assemble the piping of each module after separation. Therefore, Example 1 is superior in that it also has good maintainability for the air supply piping group.

[0090] (7) In Example 1, the pyrolysis module 300 includes a catalyst filter 310, a cooling chamber 311, a gas-liquid separation unit 312, a gas supply pump 313, an oil-water separation unit 314, and an exhaust gas treatment piping unit 315. In particular, the exhaust gas treatment piping unit 315 is attached to the catalyst filter 310, the cooling chamber 311, the gas-liquid separation unit 312, the gas supply pump 313, and the oil-water separation unit 314, and is a group of pipes for treating the exhaust gas from the treatment chamber 302. These pipe groups are unitized so that they can be connected and separated between multiple pyrolysis modules 300 via corresponding connection plugs C (see Figure 7). By unitizing the exhaust gas treatment piping group into units of the pyrolysis module 300 in this way, it becomes easier to separate the piping of each pyrolysis module 300, and to clean and assemble the piping of each module after separation. Therefore, Example 1 is superior in that it also has good maintainability for the exhaust gas treatment piping group.

[0091] (8) In Embodiment 1, the shutter module 400 is equipped with a widening mechanism 405. This widening mechanism 405 widens the inner frame unit 403 when the inner frame unit 403 closes the passage 402. The widened inner frame unit 403 braces itself in the internal space S of the outer frame unit 401, thereby sealing the transport opening 301 of the pyrolysis module 300 without any gaps. By sealing the transport opening 301 in this way, the vapor (including oil) from the pyrolysis process does not leak into the shutter module 400 (especially the internal space S of the outer frame unit 401), and the accumulation of internal dirt in the shutter module 400 is reduced. Therefore, Embodiment 1 is superior in that the shutter module 400 is equipped with a widening mechanism 405, resulting in a shutter module 400 with good maintainability.

[0092] (9) In conventional pyrolysis processes, the object being contained is heated from the outside, so the inside of the object is not heated easily, and the pyrolysis process takes a long time. Therefore, in Example 1, a heat circulation box 205 is provided at the partition position of the porous cage section 204. This heat circulation box 205 has a hollow space 205s inside, with the partition side portion made of a porous side wall 205a and the top portion made of a sealing wall 205b. In this heat circulation box 205, heated steam and heated inert gas that enter the hollow space 205s are ejected from the partition position and pass through the inside of the object. Therefore, Example 1 is superior in that it is possible to heat the entire object more quickly because the object being contained is heated from the partition position, and the time required for the pyrolysis process of the object can be shortened.

[0093] 《Other supplementary information》 In the embodiments described above, the explanation of the backflow prevention valves for the piping groups, such as the air supply piping unit 307 and the exhaust piping unit 315, has been omitted for the sake of simplicity. However, the present invention is not limited thereto. It is preferable to place backflow prevention valves in these piping groups at locations where backflow is possible.

[0094] Furthermore, in the embodiments described above, nitrogen gas is used as the inert gas. However, the present invention is not limited thereto. Any fluid that can thermally decompose the target material without combustion may be used as the inert gas.

[0095] The present invention is not limited to the embodiments described above, and various modifications are possible.

[0096] For example, the embodiments described above are detailed explanations of the entire invention in order to make it easier to understand, and the invention is not necessarily limited to comprising all of the described configurations or steps.

[0097] Furthermore, the present invention is not limited to individual configurations. For example, individual configurations may be replaced with other types of configurations having equivalent functions.

[0098] Furthermore, individual elements of the embodiment may be combined in part. Additionally, other configurations or steps may be added or replaced to the embodiment. Also, some configurations or steps may be removed from the embodiment. [Explanation of Symbols]

[0099] 100...Pyrolysis treatment system, 200...Containment container, 201...Tray, 202...Bottom, 203...Frame section, 204...Perforated cage section, 205...Heat circulation box, 205a...Perforated side wall, 205b...Sealing wall, 205s...Hollow space, 210a...Front engagement section, 210b...Rear engagement section, 300...Pyrolysis module, 300a...Preparation furnace, 300b...Heat dissipation furnace, 301. ...Conveyor port, 302...Processing chamber, 302a...Discharge nozzle, 303...Conveyor mechanism, 304...Inert gas heater, 305...Steam heater, 306...In-furnace heater, 307...Air supply processing piping unit, 310...Catalytic filter, 311...Cooling chamber, 312...Gas-liquid separation section, 312a...First gas-liquid separation tank, 312b...Second gas-liquid separation tank, 313...Gas supply pump, 314... Oil-water separation unit, 314a...First oil-water separation tank, 314b...Second oil-water separation tank, 315...Exhaust treatment piping unit, 400...Shutter module, 400a...Inlet shutter, 400b...Outlet shutter, 401...Outer frame unit, 402...Through passage, 403...Inner frame unit, 404...Inner frame drive mechanism, 404a...Drive motor, 404b...Slide conversion mechanism, 404c...Upper and lower arms, 405...Wide-out mechanism, 406...Inner bottom surface, 500...Shared equipment, 510...Boiler, 520...Nitrogen generator, 530...Cooling tower, 530a...Circulation pump, 540...Oil tank, 540a...Oil transfer pump, 550...Off-gas tank, 560...Condenser, 570...Waste treatment device, 580...Control computer, C...Connecting plug, R...Conveyor path, S...Internal space

Claims

1. A container for containing and transporting materials to be subjected to pyrolysis treatment, Multiple pyrolysis modules are installed in a line along the transport path of the container, each responsible for carrying out the pyrolysis process on an individual unit. Multiple shutter modules are individually inserted into positions that shield the transport opening of the pyrolysis module, opening when the containment container is transported and closing during the pyrolysis process, A thermal decomposition treatment system characterized by having the following features.

2. A thermal decomposition treatment system according to claim 1, The pyrolysis module located at the front of the multiple units serves as a preliminary furnace, responsible for deoxygenation treatment to remove oxygen that has entered from the outside along with the containment container by filling its interior with heated inert gas, and for preheating treatment to heat the target material prior to the subsequent pyrolysis treatment. The pyrolysis module located at the rear of the multiple units acts as a heat dissipation furnace, responsible for cooling the residue, which has become hot due to the pyrolysis process, in a deoxygenated environment by circulating unheated inert gas inside. A thermal decomposition treatment system characterized by the following.

3. A thermal decomposition treatment system according to claim 2, The number of processing stages in the pyrolysis process can be increased or decreased by inserting or removing modules, in module units, the pyrolysis module and shutter module located in the middle of the multiple units. A thermal decomposition treatment system characterized by the following.

4. A pyrolysis module as a component module of the pyrolysis treatment system according to any one of claims 1 to 3, As a mechanism for thermally decomposing the aforementioned object, With the aforementioned container brought in, the transport opening is shielded by the shutter module, thereby forming a processing chamber that creates a processing space for the thermal decomposition treatment. A transport mechanism that transports the containers sequentially by bringing the containers into the processing chamber and unloading the containers from the processing chamber, An inert gas heater that heats and controls the supply of an inert gas to the processing chamber, A steam heater that heats and controls steam and supplies it to the processing chamber, A furnace heater for controlling the heating of the processing chamber, A group of piping attached to the inert gas heater and the steam heater for supplying air to the processing chamber, comprising an air supply processing piping unit that is unitized so as to be connectable and detachable between multiple pyrolysis modules, A pyrolysis module characterized by having the following features.

5. The pyrolysis module according to claim 4, As a configuration for performing exhaust treatment of the aforementioned pyrolysis process, A catalytic filter that takes in exhaust gas from the thermal decomposition treatment from the treatment chamber and performs catalytic purification treatment, A cooling chamber that cools the exhaust gas that has passed through the catalytic filter and outputs a gas-liquid mixture, A gas-liquid separation unit separates the gas-liquid mixture that has passed through the cooling chamber into gas and liquid, A gas supply pump that sends the gas separated in the gas-liquid separation unit to an off-gas tank, An oil-water separation unit separates the liquid separated in the gas-liquid separation unit into oil and water, A group of piping units attached to the catalyst filter, the cooling chamber, the gas-liquid separation unit, the gas supply pump, and the oil-water separation unit for exhaust treatment of the treatment chamber, comprising an exhaust treatment piping unit unitized to be connectable and detachable between multiple pyrolysis modules, A pyrolysis module characterized by having the following features.

6. A pyrolysis module according to claim 5, The aforementioned gas-liquid separation unit is A first gas-liquid separation tank for precipitating and separating terephthalic acid from the gas-liquid mixture that has passed through the cooling chamber, The system comprises a second gas-liquid separator for separating the remaining liquid from the residual gas in the first gas-liquid separator. A thermal decomposition module characterized by the following features.

7. A shutter module as a component module of the pyrolysis treatment system according to any one of claims 1 to 3, An outer frame unit consisting of an outer frame surrounding a hollow internal space, with a through passage provided to match the transport path of the containment container, An inner frame unit that opens and closes the through passage by moving within the internal space of the outer frame unit, An inner frame drive mechanism for moving the inner frame unit, When the inner frame unit closes the passage, the widening mechanism widens the inner frame unit and braces it in the internal space of the outer frame unit, thereby sealing the transport opening of the pyrolysis module. A shutter module characterized by having the following features.

8. A containment container comprising the pyrolysis treatment system according to any one of claims 1 to 3, The bottom of the container has a base that supports a tray for receiving the residue that falls off during the thermal decomposition process. The frame portion, which is erected from the bottom and constitutes the enclosure frame, A porous cage section is attached to the frame section, with the sides and bottom surrounded by a porous surface, and is suspended above the bottom, to contain the object to be subjected to the thermal decomposition treatment. The system includes a heat circulation box positioned at the partition of the porous cage section, The heat circulation box has a hollow space inside, with the partition side portion made of a porous side wall and the top portion made of a sealing wall, thereby allowing heated steam and heated inert gas that enter the hollow space to pass from the partition position to the inside of the object. A container characterized by the following features.

Images