Pyrolysis-type processing system and pyrolysis-type processing method

Abstract

This pyrolysis-type processing system comprises: a fluidized bed furnace (40) having a pyrolysis furnace (1) that generates a pyrolysis gas by subjecting a processing object to pyrolysis, and a medium regeneration furnace (44) that burns residues of the processing object having undergone pyrolysis; a condensation device (7) that condenses an oil component and moisture in the pyrolysis gas and separately recovers an oil-water mixture and a light gas; a gas separation device (15) that recovers a reducing gas from the light gas; a reducing gas transfer line (17) through which the reducing gas recovered by the gas separation device (15) is transferred to the pyrolysis furnace; and a fuel line (21) through which the light gas, from which the reducing gas has been separated, is transferred to the medium regeneration furnace (44).

Description

Pyrolysis-type processing system and pyrolysis-type processing method

[0001] The present invention relates to a pyrolysis treatment system and a pyrolysis treatment method for pyrolyzing an oxygen-containing treatment target, such as biomass or municipal waste, and recovering oil from the generated pyrolysis gas.

[0002] Development of material recycling and chemical recycling, which treats and reuses materials containing oxygen atoms such as biomass and municipal waste, is progressing. In particular, chemical recycling, which uses a pyrolysis furnace to recover oil from biomass, is attracting attention.

[0003] Fluidized bed furnaces used in chemical recycling have a structure in which the interior of the furnace is divided into a pyrolysis furnace and a media regeneration furnace by a partition wall. The bed material circulates between the pyrolysis furnace and the media regeneration furnace, while the material to be treated, such as biomass, is fed into the pyrolysis furnace. The material to be treated is heated by the bed material in the pyrolysis furnace, and most of it is gasified through pyrolysis. The residue of the material to be treated is transported by the bed material to the media regeneration furnace. The residue of the material to be treated is burned in the media regeneration furnace, heating the bed material. The heated bed material moves into the pyrolysis furnace, where it functions as a heat source.

[0004] The material to be treated generates pyrolysis gas through thermal decomposition. The gaseous hydrocarbons contained in this pyrolysis gas are condensed to recover cracked oil. The above-mentioned internal circulating fluidized bed gasification system is expected to be a technology that can pyrolyze the material to be treated and recover cracked oil and cracked gas from the material as pyrolysis products.

[0005] Patent No. 6933577

[0006] However, the cracked oil recovered by pyrolysis of the material being treated contains a large amount of oxygen atoms, making it of low quality as a chemical feedstock or fuel, making it difficult to use as a basic chemical product or in engines or high-efficiency power generation equipment. Bio-oil, in particular, obtained by pyrolysis of biomass, has a high oxygen atom content and a calorific value less than half that of petroleum-based fuel oil. Furthermore, water and acid by-products can corrode equipment, leading to increased coke production and fouling of equipment and catalysts.

[0007] Therefore, the present invention provides a pyrolysis-type processing system and a pyrolysis-type processing method that can recover high-quality oil from a processing object containing oxygen atoms, such as biomass.

[0008] In one aspect, a pyrolysis-type treatment system for treating a treatment object containing oxygen atoms is provided, comprising a fluidized bed furnace having a pyrolysis furnace that generates pyrolysis gas by pyrolyzing the treatment object, and a media regeneration furnace that burns the residue of the pyrolyzed treatment object; a condensation device that condenses the oil components and moisture in the pyrolysis gas to separately recover an oil-water mixture and light gas; a gas separation device that recovers reducing gas from the light gas; a reducing gas transfer line that transfers the reducing gas recovered by the gas separation device to the pyrolysis furnace; and a fuel line that transfers the light gas from which the reducing gas has been separated to the media regeneration furnace.

[0009] In one aspect, the fluidized bed furnace is an internal circulating fluidized bed gasification system in which a fluidizing medium circulates between the pyrolysis furnace and the medium regeneration furnace. In one aspect, the pyrolysis-type treatment system further includes a solid-gas separator disposed between the pyrolysis furnace and the condenser, which separates particles from the pyrolysis gas discharged from the pyrolysis furnace. In one aspect, the condenser includes an oil scrubber and a water scrubber. In one aspect, the pyrolysis-type treatment system further includes an oil-water separator that separates the oil-water mixture discharged from the water scrubber into oil and water. In one aspect, the pyrolysis-type treatment system further includes a hydrocracker that hydrotreats the oil recovered from the oil-water mixture.

[0010] In one aspect, there is provided a pyrolysis-type treatment method for treating a treatment object containing oxygen atoms, the method comprising: thermally decomposing the treatment object in a pyrolysis furnace of a fluidized bed furnace to generate a pyrolysis gas; condensing the oil component and water in the pyrolysis gas using a condenser to separately recover an oil-water mixture and a light gas; recovering a reducing gas from the light gas using a gas separation device; transporting the reducing gas recovered by the gas separation device to the pyrolysis furnace; subjecting the treatment object containing oxygen atoms and the pyrolysis gas in the pyrolysis furnace to hydrogenation treatment using hydrogen contained in the reducing gas; and transporting the light gas from which the reducing gas has been separated as fuel to a medium regeneration furnace of the fluidized bed furnace to combust the pyrolyzed residue of the treatment object.

[0011] In one aspect, the fluidized bed furnace is an internal circulating fluidized bed gasification system in which a fluidizing medium circulates between the pyrolysis furnace and the medium regeneration furnace. In one aspect, the pyrolysis-type treatment method further includes separating particles from the pyrolysis gas discharged from the pyrolysis furnace by a solid-gas separator disposed between the pyrolysis furnace and the condenser. In one aspect, the condenser includes an oil scrubber and a water scrubber. In one aspect, the pyrolysis-type treatment method further includes separating the oil-water mixture discharged from the water scrubber into oil and water.

[0012] The gas separation unit separates reducing gas containing hydrogen from the pyrolysis gas. The reducing gas is sent to the pyrolysis furnace, where the hydrogen contained in the reducing gas reacts with oxygen atoms contained in the pyrolysis gas in the pyrolysis furnace, thereby allowing the pyrolysis gas to be hydrotreated. The water produced by the hydrotreatment is condensed in the condenser. The liquid oil and water are separated, allowing the oil to be recovered. In particular, hydrotreatment in the pyrolysis furnace can directly utilize the high heat of the pyrolysis gas.

[0013] Fig. 1 is a block diagram showing one embodiment of a pyrolytic processing system; Fig. 2 is a block diagram showing another embodiment of a pyrolytic processing system; Fig. 3 is a block diagram showing yet another embodiment of a pyrolytic processing system; Fig. 4 is a block diagram showing yet another embodiment of a pyrolytic processing system; Fig. 5 is a block diagram showing yet another embodiment of a pyrolytic processing system;

[0014] Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of a pyrolysis-type treatment system for treating a treatment target containing oxygen atoms. The treatment target treated by the pyrolysis-type treatment system is a substance containing oxygen atoms, such as biomass or municipal waste. In the embodiment described below, biomass, which is an example of a treatment target, is treated by the pyrolysis-type treatment system.

[0015] 1, the pyrolysis treatment system includes a fluidized-bed furnace 40 that pyrolyzes and combusts biomass, an example of an oxygen-containing material to be treated. The fluidized-bed furnace 40 includes a pyrolysis furnace 1 that pyrolyzes the biomass and generates pyrolysis gas, and a media regeneration furnace 44 that combusts the pyrolyzed biomass residue.

[0016] The pyrolysis furnace 1 and the media regeneration furnace 44 are formed within a single fluidized bed furnace 40. That is, the interior of the fluidized bed furnace 40 is separated into the pyrolysis furnace 1 and the media regeneration furnace 44 by a partition wall 45. Biomass, which is the material to be treated, is supplied into the pyrolysis furnace 1 by a raw material supply device (not shown). The overall shape of the fluidized bed furnace 40 is not particularly limited, but may be, for example, cylindrical or rectangular.

[0017] The pyrolysis furnace 1 is configured to heat biomass and pyrolyze the biomass to generate pyrolysis gas. A decomposition catalyst may be added to the pyrolysis furnace 1 to promote pyrolysis.

[0018] The pyrolysis type processing system includes a hydrogen gas supply source 10 that supplies hydrogen gas to the pyrolysis furnace 1. The hydrogen gas supply source 10 is connected to the pyrolysis furnace 1. An example of the hydrogen gas supply source 10 is a hydrogen gas cylinder.

[0019] A fluidized medium (e.g., silica sand) is contained in the pyrolysis furnace 1 and the media regeneration furnace 44. A fluidizing gas is supplied to the pyrolysis furnace 1 and the media regeneration furnace 44 to fluidize the fluidized medium. The fluidizing gas supplied to the pyrolysis furnace 1 is composed of a reducing gas containing hydrogen gas recovered in the gas separation device 15 (described later) and fresh hydrogen gas supplied from the hydrogen gas supply source 10. That is, the reducing gas containing hydrogen gas recovered in the gas separation device 15 is introduced into the pyrolysis furnace 1 through the reducing gas transfer line 17 together with the fresh hydrogen gas, and serves as the fluidizing gas to fluidize the fluidized medium. Compressed air is supplied to the media regeneration furnace 44 as the fluidizing gas.

[0020] Biomass is fed into the pyrolysis furnace 1 while the bed material circulates between the pyrolysis furnace 1 and the media regeneration furnace 44. The biomass is heated by the bed material in the pyrolysis furnace 1 and pyrolyzed to produce pyrolysis gas. The biomass residue is transported by the bed material to the media regeneration furnace 44. The biomass residue is combusted in the media regeneration furnace 44 to heat the bed material. The heated bed material moves into the pyrolysis furnace 1 and functions as a heat source for pyrolysis in the pyrolysis furnace 1. The fluidized bed furnace 40, in which the bed material circulates within the furnace in this manner, is an internal circulating fluidized bed gasification system.

[0021] The pyrolysis treatment system further includes a solid-gas separator 50 that separates particles from the pyrolysis gas discharged from the pyrolysis furnace 1. Specific examples of particles removed by the solid-gas separator 50 include polymers and coke residues produced during the pyrolysis of biomass, fluidized media (e.g., silica sand fine powder), and catalyst fines. An example of the solid-gas separator 50 is a cyclone-type solid-gas separator that separates particles from the pyrolysis gas by centrifugal force.

[0022] The pyrolysis gas discharged from the pyrolysis furnace 1 is led to the solid-gas separator 50. The particles removed by the solid-gas separator 50 are returned to the media regeneration furnace 44. In one embodiment, the particles removed by the solid-gas separator 50 may be returned to the pyrolysis furnace 1. The particles in the pyrolysis gas are removed by the solid-gas separator 50, and as a result, the quality of the oil recovered in the oil reservoir 12 at the subsequent stage can be improved.

[0023] The pyrolysis treatment system includes a condenser 7 that condenses oil components and moisture in the pyrolysis gas generated in the pyrolysis furnace 1 and separately recovers an oil-water mixture and light gas. The condenser 7 is disposed downstream of the pyrolysis furnace 1. In the embodiment shown in FIG. 1 , the condenser 7 is disposed downstream of the solid-gas separator 50. The condenser 7 is configured to cool the pyrolysis gas and condense the oil components and moisture in the pyrolysis gas. Specific examples of the condenser 7 include a heat exchanger (specific examples include a multi-tube type, a spiral type, a plate type, etc.), an oil scrubber, a water scrubber, and combinations thereof.

[0024] In one example, the pyrolysis gas is cooled to 40°C by the condenser 7. Therefore, oil components and water with boiling points of 40°C or higher are condensed in the condenser 7 and discharged as an oil-water mixture. The oil-water mixture and light gas are discharged separately from the condenser 7. The oil-water mixture is sent to the oil reservoir 12. The oil-water mixture is separated into oil and water in the oil reservoir 12. The oil is recovered as cracked oil or reformed oil, and the water is discharged from the bottom of the oil reservoir 12.

[0025] The light gas discharged from the condenser 7 is, for example, hydrogen (H ２ ), methane (CH ４ ), ethane (C ２ H ６ ), liquefied petroleum gas (LPG), carbon monoxide (CO), carbon dioxide (CO ２ ) is included.

[0026] The pyrolysis treatment system further includes a gas separation device 15 that recovers reducing gas containing hydrogen gas from the light gas discharged from the condensation device 7, and a reducing gas transfer line 17 that transfers the reducing gas containing hydrogen gas to the pyrolysis furnace 1.

[0027] The gas separation device 15 is disposed downstream of the condenser 7, and the light gas discharged from the condenser 7 is sent to the gas separation device 15. The specific configuration of the gas separation device 15 is not particularly limited, but for example, a pressure swing adsorption device (PSA) or a gas separation membrane can be used for the gas separation device 15. The reducing gas separated from the pyrolysis gas by the gas separation device 15 is transferred to the pyrolysis furnace 1 through a reducing gas transfer line 17.

[0028] The gas separation device 15 is configured to recover (separate) reducing gases containing small molecular weight hydrogen gas, methane, ethane, and carbon monoxide gas from light gases. The reducing gases containing hydrogen gas are sent to the pyrolysis furnace 1, which can suppress the generation of coke during the pyrolysis of biomass in the pyrolysis furnace 1.

[0029] In the pyrolysis furnace 1, the hydrogen gas contained in the reducing gas is added to the pyrolysis gas at high temperatures, and the biomass and pyrolysis gas in the pyrolysis furnace 1 are subjected to hydrotreating. That is, oxygen atoms contained in the biomass and pyrolysis gas react with hydrogen to form moisture. As a result, oxygen atoms are removed from the biomass and pyrolysis gas. Because the pyrolysis gas in the pyrolysis furnace 1 is at a high temperature (e.g., 400 to 600°C), the high heat of the pyrolysis gas can be used directly to hydrotreat the pyrolysis gas. The condenser 7 cools the pyrolysis gas hydrotreated in the pyrolysis furnace 1 and condenses the oil components and moisture in the pyrolysis gas. The liquid oil and water are separated, allowing the oil to be recovered.

[0030] The hydrogen gas supply source 10 is connected to a reducing gas transfer line 17. The reducing gas transfer line 17 extends from the gas separation device 15 to the pyrolysis furnace 1. Therefore, the hydrogen gas supply source 10 is connected to the pyrolysis furnace 1 via the reducing gas transfer line 17. The hydrogen gas sent to the pyrolysis furnace 1 also functions as a purge gas within the pyrolysis furnace 1. The purge gas is a gas for discharging pyrolysis gas remaining in the pyrolysis furnace 1 downstream, and may be used to adjust the residence time of the pyrolysis gas.

[0031] The hydrogen gas contained in the light gas discharged from the condenser 7 is recovered by the gas separator 15 and used again for the hydrotreating in the pyrolysis furnace 1. That is, the hydrogen gas required for the hydrotreating is consumed while circulating between the pyrolysis furnace 1 and the gas separator 15. According to this embodiment, the consumption of hydrogen gas required for the hydrotreating can be reduced. Hydrogen gas is supplied to the pyrolysis furnace 1 from the hydrogen gas supply source 10 through the reducing gas transfer line 17 according to the amount of hydrogen gas required for the hydrotreating in the pyrolysis furnace 1.

[0032] The thermal decomposition type treatment system further includes a fuel line 21 that supplies the light gas from which the reducing gas has been separated by the gas separation device 15 to the medium regeneration furnace 44 of the fluidized bed furnace 40. The light gas from which the reducing gas has been separated includes, for example, liquefied petroleum gas (LPG) such as propane and butane, which have larger molecular weights, and carbon dioxide (CO ２ ), which is combusted as fuel in the media regeneration furnace 44. The biomass residue pyrolyzed in the pyrolysis furnace 1 is sent to the media regeneration furnace 44 and combusted in the media regeneration furnace 44. The heat generated by the combustion heats a fluidized medium, and the heated fluidized medium is sent to the pyrolysis furnace 1 and used as a heat source for pyrolysis in the pyrolysis furnace 1.

[0033] Figure 2 is a block diagram showing another embodiment of a thermal cracking treatment system. The configuration and operation of this embodiment, which are not specifically described, are the same as those of the embodiment described with reference to Figure 1, and therefore, redundant description will be omitted. The thermal cracking treatment system of the embodiment shown in Figure 2 further includes a hydrocracker 25 connected to the oil reservoir 12 and a distillation column 28 connected to the hydrocracker 25.

[0034] A portion or all of the oil in the oil reservoir 12 is transferred by a pump 30 to a hydrocracker 25. The hydrocracker 25 is configured to further hydrotreat the oil recovered in the oil reservoir 12 at high temperatures (e.g., 400 to 600°C) and under pressure (e.g., 1 MPa or more). Hydrogen gas used in the hydrotreating in the hydrocracker 25 is supplied from a hydrogen gas supply source 10. Trace amounts of oxygen atoms, sulfur atoms, nitrogen atoms, etc. contained in the oil are removed by the hydrotreating in the hydrocracker 25.

[0035] The oil hydrotreated by the hydrocracker 25 is sent to a distillation column 28, where it is separated into light oil and heavy oil. The hydrogen, hydrogen sulfide, and ammonia discharged from the distillation column 28 are sent to the gas separation unit 15. The water condensed and separated in the distillation column 28 is discharged from an auxiliary facility of the distillation column 28.

[0036] The hydrocracker 25 and distillation column 28 shown in FIG. 2 are appropriately provided depending on the quality required for the oil recovered in the oil reservoir 12.

[0037] 3 is a block diagram showing yet another embodiment of a pyrolysis-type processing system. The configuration and operation of this embodiment, which will not be specifically described, are the same as those of the embodiment described with reference to FIG. 2, and therefore, redundant description will be omitted.

[0038] The pyrolysis-type treatment system of the embodiment shown in Figure 3 further includes an oil-water separator 53 disposed between the condenser 7 and the oil reservoir 12. The oil-water mixture produced by the condenser 7 is sent to the oil-water separator 53, which is configured to separate the oil from the water. The specific configuration of the oil-water separator 53 is not particularly limited, and for example, a coalescer or a sedimentation tank can be used as the oil-water separator 53. The oil separated by the oil-water separator 53 is sent to the oil reservoir 12 and stored therein. The water separated from the oil by the oil-water separator 53 is discharged from the oil-water separator 53.

[0039] 4 is a block diagram showing yet another embodiment of a pyrolysis-type processing system. The configuration and operation of this embodiment, which will not be specifically described, are the same as those of the embodiment described with reference to FIG. 3, and therefore, redundant description will be omitted.

[0040] The pyrolysis treatment system of the embodiment shown in FIG. 4 further includes a scrubbing device 55 disposed between the condenser 7 and the gas separation device 15. The scrubbing device 55 is configured to scrub the light gas with a scrubbing liquid by bringing the scrubbing liquid into contact with the light gas passing through the interior of the scrubbing device 55. A liquid such as water can be used as the scrubbing liquid. The specific configuration of the scrubbing device 55 used is not particularly limited, and a known scrubbing device such as a scrubber can be used. For example, a scrubbing tower having a gas passage formed therein and spray nozzles for spraying water onto the gas flowing through the passage can be used as the scrubbing device 55.

[0041] The light gas discharged from the condenser 7 is led to the scrubbing device 55. The hydrogen, hydrogen sulfide, and ammonia discharged from the distillation column 28 are also sent to the scrubbing device 55. The scrubbing device 55 removes water-soluble substances such as fine particles and ammonia from the light gas. The light gas that has passed through the scrubbing device 55 is sent to the gas separation device 15.

[0042] 5 is a block diagram showing yet another embodiment of a pyrolysis-type processing system. The configuration and operation of this embodiment, which will not be specifically described, are the same as those of the embodiment described with reference to FIG. 3, and therefore, redundant description will be omitted.

[0043] In the embodiment shown in Fig. 5, a combination of an oil scrubber 60 and a water scrubber 56 is used as the condenser 7. That is, the oil scrubber 60 and the water scrubber 56 as the condenser 7 cool the hydrotreated pyrolysis gas in two stages to condense the oil component and moisture. The oil scrubber 60 is arranged downstream of the pyrolysis furnace 1. In the embodiment shown in Fig. 5, the oil scrubber 60 is arranged downstream of the solid-gas separation device 50. The oil scrubber 60 is connected to the pyrolysis furnace 1, the water scrubber 56, and the oil reservoir 12. The pyrolysis gas hydrotreated in the pyrolysis furnace 1 is led to the oil scrubber 60 via the solid-gas separation device 50.

[0044] The oil scrubber 60 cools the recovered heavy oil at its bottom and then sprays the heavy oil into the pyrolysis gas, thereby cooling the pyrolysis gas and condensing the gaseous oil component in the pyrolysis gas. In one embodiment, oil supplied from an external source may be sprayed in the oil scrubber 60 instead of the recovered heavy oil.

[0045] In one example, the pyrolysis gas is cooled to 150°C by the oil scrubber 60. Therefore, oil components with a boiling point of 150°C or higher are condensed in the oil scrubber 60. The condensed oil and the sprayed oil are discharged from the oil scrubber 60 as heavy oil and stored in the oil reservoir 12. The specific configuration of the oil scrubber 60 to be used is not particularly limited, and a known oil scrubber can be used. For example, a wash tower having a gas passage formed therein and equipped with spray nozzles that spray oil into the gas flowing through the passage can be used as the oil scrubber 60.

[0046] The water scrubber 56 is disposed between the oil scrubber 60 and the gas separation device 15. The water scrubber 56 is further connected to the oil-water separator 53. The water scrubber 56 brings water into contact with the pyrolysis gas that has passed through the oil scrubber 60, thereby further cooling the pyrolysis gas. In this embodiment, the water scrubber 56 brings alkaline water into contact with the pyrolysis gas. The pyrolysis gas is cooled by contact with water (alkaline water in this embodiment). For example, the pyrolysis gas is cooled from 150°C to 40°C by the water scrubber 56. Therefore, the water scrubber 56 condenses oil components and moisture, whose boiling points are generally within the range of 150°C to 40°C. The oil-water mixture is discharged from the water scrubber 56 and sent to the oil-water separator 53. The oil-water separator 53 is configured to separate oil (e.g., light oil at 40°C) from the alkaline water. The pyrolysis gas from which the oil components and water have been removed by the water scrubber 56 is sent to the gas separation unit 15 as a light gas.

[0047] According to this embodiment, the oil contained in the pyrolysis gas is recovered by the oil scrubber 60 and the water scrubber 56, so that fine particles and water-soluble substance gases in the pyrolysis gas are removed and the overall oil yield is improved.

[0048] The hydrocracker 25 and the distillation column 28 shown in Figures 2 to 5 may be omitted. The embodiments described with reference to Figures 1 to 5 may be combined as appropriate. For example, the condenser 7 shown in Figure 5, which is a combination of the oil scrubber 60 and the water scrubber 56, may be applied to the embodiment described with reference to Figure 1 or 2.

[0049] The above-described embodiments have been described for the purpose of enabling a person of ordinary skill in the art to practice the present invention. Various modifications of the above-described embodiments would be obvious to a person skilled in the art, and the technical concept of the present invention may be applied to other embodiments. Therefore, the present invention is not limited to the described embodiments, but is to be interpreted in the broadest scope in accordance with the technical concept defined by the claims.

[0050] INDUSTRIAL APPLICABILITY The present invention can be used in a pyrolysis treatment system and a pyrolysis treatment method for pyrolyzing an oxygen atom-containing treatment target such as biomass or municipal waste and recovering oil from the generated pyrolysis gas.

[0051] REFERENCE SIGNS LIST 1 Pyrolysis furnace 7 Condenser 10 Hydrogen gas supply source 12 Oil reservoir 15 Gas separator 17 Reducing gas transfer line 21 Fuel line 25 Hydrocracker 28 Distillation column 40 Fluidized bed furnace 44 Media regeneration furnace 45 Partition wall 50 Solid-gas separator 53 Oil-water separator 55 Cleaning device 56 Water scrubber 60 Oil scrubber

Claims

1. A pyrolysis type treatment system for treating a treatment object containing oxygen atoms, comprising: a fluidized bed furnace having a pyrolysis furnace which generates pyrolysis gas by pyrolyzing the treatment object, and a media regeneration furnace which burns the pyrolyzed residue of the treatment object; a condensation device which condenses the oil components and moisture in the pyrolysis gas to separately recover an oil-water mixture and a light gas; a gas separation device which recovers reducing gas from the light gas; a reducing gas transfer line which transfers the reducing gas recovered by the gas separation device to the pyrolysis furnace; and a fuel line which transfers the light gas from which the reducing gas has been separated to the media regeneration furnace.

2. The pyrolysis-type treatment system according to claim 1, wherein the fluidized bed furnace is an internal circulating fluidized bed gasification system in which a fluidizing medium circulates between the pyrolysis furnace and the medium regeneration furnace.

3. The pyrolysis type treatment system according to claim 1, further comprising a solid-gas separation device disposed between the pyrolysis furnace and the condensation device for separating particles from the pyrolysis gas discharged from the pyrolysis furnace.

4. The pyrolysis-type processing system of claim 1, wherein the condensing device includes an oil scrubber and a water scrubber.

5. The pyrolysis-type treatment system according to claim 4, further comprising an oil-water separator for separating the oil-water mixture discharged from the water scrubber into oil and water.

6. The pyrolysis-type processing system according to claim 1, further comprising a hydrocracker for hydrotreating the oil recovered from the oil-water mixture.

7. A pyrolysis-type treatment method for treating a treatment object containing oxygen atoms, comprising the steps of: generating a pyrolysis gas by pyrolyzing the treatment object in a pyrolysis furnace of a fluidized bed furnace; condensing the oil components and moisture in the pyrolysis gas using a condenser to separately recover an oil-water mixture and a light gas; recovering a reducing gas from the light gas using a gas separation device; transporting the reducing gas recovered by the gas separation device to the pyrolysis furnace and performing a hydrogenation treatment on the treatment object containing oxygen atoms and the pyrolysis gas in the pyrolysis furnace using hydrogen contained in the reducing gas; and transporting the light gas from which the reducing gas has been separated as fuel to a medium regeneration furnace of the fluidized bed furnace to combust the pyrolyzed residue of the treatment object.

8. The pyrolysis-type processing method according to claim 7, wherein the fluidized bed furnace is an internal circulating fluidized bed gasification system in which a fluidizing medium circulates between the pyrolysis furnace and the medium regeneration furnace.

9. The pyrolysis-type processing method according to claim 7, further comprising separating particles from the pyrolysis gas discharged from the pyrolysis furnace by a solid-gas separator disposed between the pyrolysis furnace and the condenser.

10. The pyrolysis-type processing method according to claim 7, wherein the condensation device includes an oil scrubber and a water scrubber.

11. The pyrolytic processing method of claim 10, further comprising separating the oil-water mixture discharged from the water scrubber into oil and water.

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