WO2023112937A1 - Method for converting polyvinyl-chloride-containing plastic into oil and device for converting polyvinyl-chloride-containing plastic into oil - Google Patents

Method for converting polyvinyl-chloride-containing plastic into oil and device for converting polyvinyl-chloride-containing plastic into oil Download PDF

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WO2023112937A1
WO2023112937A1 PCT/JP2022/045950 JP2022045950W WO2023112937A1 WO 2023112937 A1 WO2023112937 A1 WO 2023112937A1 JP 2022045950 W JP2022045950 W JP 2022045950W WO 2023112937 A1 WO2023112937 A1 WO 2023112937A1
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polyvinyl chloride
plastic
oil
converting
hydroxylation
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Japanese (ja)
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英紀 伊部
則夫 橋本
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株式会社湘南貿易
英紀 伊部
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C08J11/16—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
    • C10G1/10—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Definitions

  • the present invention relates to a method for converting polyvinyl chloride-containing plastics to oil and an apparatus for converting polyvinyl chloride-containing plastics to oil.
  • a melting tank that heats, melts, and holds the plastic to dechlorinate and desublimate, and the gas generated in the melting tank is cooled to condense the high boiling point fraction as oil, and the sublimate in the gas is deposited in the oil, and the gas that has passed through the spray tower is cooled and the low boiling point fraction is condensed as oil. and is proposed (see Patent Document 1).
  • the present invention has been made in view of the above problems, and a method for converting polyvinyl chloride-containing plastics to oil and an apparatus for converting polyvinyl chloride-containing plastics to oil, which are capable of obtaining hydrocarbon oil from polyvinyl chloride at a high yield. intended to provide
  • a method for producing oil from a plastic containing polyvinyl chloride A hydroxylation step of hydroxylating the polyvinyl chloride to form a hydroxide; and a thermal decomposition step of thermally decomposing the hydroxide into a hydrocarbon oil gas.
  • the polyvinyl chloride may be hydroxylated by heating the plastic in a high-temperature steam atmosphere.
  • a mixing step of mixing the plastic with an alkaline material to form an alkaline mixture In the hydroxylation step, the polyvinyl chloride is hydroxylated by heating the alkali mixture in a high-temperature steam atmosphere, and the hydrochloric acid content of the polyvinyl chloride is neutralized with the alkaline material to form a solid salt. good too.
  • a melting step of melting the plastic in the alkali mixture mixed in the mixing step In the hydroxylation step, the alkali mixture in which the plastic is melted may be heated in a high-temperature steam atmosphere.
  • the plastic includes polyethylene terephthalate
  • the organic acid content of the polyethylene terephthalate may be neutralized with the alkaline material to form a solid salt.
  • the hydroxylation unit may heat the plastic in a high-temperature steam atmosphere to hydroxylate the polyvinyl chloride to form a hydroxide.
  • a mixing unit for mixing an alkaline material into the plastic to form an alkaline mixture
  • the hydroxylation unit may heat the alkali mixture in a high-temperature steam atmosphere to hydroxylate the polyvinyl chloride, and neutralize the hydrochloric acid content of the polyvinyl chloride with the alkaline material to form a solid salt.
  • a melting section for melting the plastic in the alkali mixture mixed in the mixing section may heat the alkali mixture in which the plastic is melted in a high-temperature steam atmosphere.
  • the plastic includes polyethylene terephthalate
  • the hydroxylation part or the thermal decomposition part may neutralize the organic acid content of the polyethylene terephthalate with the alkaline material to form a solid salt.
  • polyvinyl chloride is hydroxylated and then thermally decomposed, it is possible to obtain hydrocarbon oil from polyvinyl chloride at a high yield.
  • FIG. 1 is a flow chart of a method for converting polyvinyl chloride-containing plastic to oil, showing one embodiment of the present invention.
  • 1 is a schematic diagram of a vinyl chloride-containing plastic oil converting apparatus; FIG.
  • FIGS. 1 and 2 show an embodiment of the present invention
  • FIG. 1 is a flow chart of a method for converting polyvinyl chloride-containing plastics to oil
  • FIG. 2 is a schematic diagram of an apparatus for converting vinyl chloride-containing plastics to oil.
  • polyvinyl chloride-containing plastics into oils in addition to polyvinyl chloride (PVC).
  • the polyvinyl chloride-containing plastic includes polyethylene terephthalate (PET), polypropylene (PP), polystyrene (PS) and polyethylene (PE) in addition to polyvinyl chloride (PVC).
  • step S1 mixing step
  • slaked lime is used as the alkaline material, but the alkaline material is arbitrary, and quicklime, for example, can also be used.
  • step S2 melting step
  • step S3 hydration step
  • the chloro group of polyvinyl chloride is substituted with a hydroxyl group.
  • the polyvinyl chloride is hydroxylated by heating the alkaline mixture to a predetermined hydroxylation temperature in a hot steam atmosphere.
  • the high-temperature steam referred to here includes both superheated steam and saturated steam.
  • superheated steam may be used under normal pressure
  • saturated steam may be used under high pressure.
  • the hydrochloric acid content of polyvinyl chloride is neutralized with an alkaline material to form a solid salt.
  • step S4 thermal decomposition step
  • polypropylene, polystyrene and polyethylene are thermally decomposed into hydrocarbon oil gas in the thermal decomposition step S4.
  • the organic acid content of polyethylene terephthalate is neutralized with an alkaline material to form a solid salt, which is thermally decomposed into benzene gas.
  • the cracked gas generated by the thermal decomposition is cooled and recovered as cracked oil (step S5: recovery step).
  • Fig. 2 shows an oil conversion apparatus that uses the above method for converting plastics containing polyvinyl chloride into oil.
  • this oil conversion apparatus 100 has a pressure feeding heating feeder 110 , a heating furnace 120 , a cracked gas cooling device 130 and a cracked oil recovery device 140 .
  • plastics to be oiled include polyvinyl chloride, polyethylene terephthalate, polypropylene, polystyrene, and polyethylene.
  • the pressurizing and heating feeder 110 includes a plastic supply section 111 that supplies plastic containing polyvinyl chloride, an alkali supply section 112 that supplies an alkaline material, and a mixing section 113 that mixes the plastic and the alkaline material to form an alkaline mixture. , an extrusion screw 114 that heats the alkali mixture to melt the plastic in the alkali mixture and pumps it, and a mixture delivery unit 115 that delivers the alkali mixture in which the plastic is melted to the next process device.
  • the pressure feeding and heating feeder 110 serves as a mixing section that mixes the plastic with an alkaline material to form an alkaline mixture, and a melting section that melts the plastic in the alkaline mixture.
  • the plastic and the alkaline material supplied from each supply unit 111 are pulverized and mixed in the mixing unit 113 and heated to a predetermined melting temperature T1.
  • the melting temperature T1 is set to a temperature at which each component of the plastic does not initiate thermal decomposition, and can be set to 200-250° C., for example.
  • the alkali mixture in which the plastic is melted is kneaded by the extrusion screw 114 and is pressure-fed and delivered from the mixture delivery section 115 to the heating furnace 120 .
  • the mixture delivery unit 115 is configured so that gas does not enter and exit the pressurizing and heating feeder 110 , and the gas generated in the heating furnace 120 described later does not flow back into the pressurizing and heating feeder 110 .
  • the heating furnace 120 includes a mixture supply section 121 to which an alkali mixture in which plastic is melted is supplied, a steam supply section 122 to which high-temperature steam is supplied, and a furnace body into which the alkali mixture is introduced and high-temperature steam is introduced. 123, a residue discharge unit 124 for discharging residue generated in the furnace main body 123, and a cracked gas delivery unit 125 for sending the cracked gas produced in the furnace main body 123 to the next process apparatus.
  • the heating furnace 120 serves as a hydroxylation unit for hydroxylating polyvinyl chloride to form a hydroxide, and a thermal decomposition unit for thermally decomposing the hydroxide into a hydrocarbon oil gas. .
  • the alkali mixture is heated within the furnace body 123 by high-temperature steam from the steam supply section 122 .
  • a predetermined hydroxylation temperature T2 the polyvinyl chloride is hydroxylated to form a hydroxide, and the hydrochloric acid content of the polyvinyl chloride is neutralized with the alkaline material to form a first solid salt.
  • slaked lime is used as the alkaline material, calcium chloride is obtained as the first solid salt.
  • the hydroxide reaches a predetermined thermal decomposition temperature T3, it is thermally decomposed into the first hydrocarbon oil gas.
  • the hydroxylation temperature T2 is 200 to 400°C, and 400°C in this embodiment.
  • the thermal decomposition temperature T3 is set to a temperature at which polyvinyl chloride hydroxide thermally decomposes, and can be set to 480 to 500° C., for example.
  • the polyethylene terephthalate in the alkaline mixture is thermally decomposed into benzene gas by neutralizing the organic acid content with the alkaline material to form a second solid salt before reaching the thermal decomposition temperature T3.
  • slaked lime is used as the alkaline material
  • calcium benzoate is obtained as the second solid salt.
  • the polypropylene, polystyrene and polyethylene in the alkali mixture are thermally decomposed into the second hydrocarbon oil gas, the third hydrocarbon oil gas and the fourth hydrocarbon oil gas, respectively, before reaching the thermal decomposition temperature T3.
  • the first and second solid salts generated in the furnace body 123 are discharged from the residue discharging section 124 as residues. Further, the first to fourth hydrocarbon oil gases and benzene gas generated in the furnace body 123 are delivered as cracked gas from the cracked gas delivery section 125 to the device for the next process. In this embodiment, the cracked gas is delivered with the hot steam. The cracked gas and high-temperature steam sent out from the heating furnace 120 are cooled by the cracked residue cooling device 130 and then recovered as cracked oil and water by the cracked oil recovery device 140 .
  • polyvinyl chloride is hydroxylated and then thermally decomposed, so that hydrocarbon oil can be obtained from polyvinyl chloride at a high yield. Further, prior to the hydroxylation of the polyvinyl chloride, the alkali mixture in which the plastic is melted is kneaded, so that the plastic and the alkaline material can be evenly mixed, and the polyvinyl chloride can be appropriately hydroxylated. can be done.
  • plastics to be oiled include, in addition to polyvinyl chloride, other plastic materials such as polyethylene terephthalate, polypropylene, polystyrene, and polyethylene. Of course, the plastic material need not be included.
  • the hydroxylation of polyvinyl chloride and the thermal decomposition of the hydroxide are performed in one heating furnace 120, but the hydroxylation and thermal decomposition are performed in separate heating furnaces. good too.
  • the alkali mixture is kneaded while the plastic in the alkali mixture is melted, the polyvinyl chloride and the alkaline material are dispersed in the alkali mixture to the extent that the hydroxylation of the polyvinyl chloride is not hindered. If so, there is no need to melt the plastic in the alkaline mixture or knead the alkaline mixture.
  • the alkaline material may be added to the pressurized heating feeder 110 and additionally fed from the heating furnace 120 , or the alkaline material may be fed from the heating furnace 120 instead of the pressurized heating feeder 110 .

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Sustainable Development (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
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Abstract

Provided are a method for converting polyvinyl-chloride-containing plastic into oil and a device for converting polyvinyl-chloride-containing plastic into oil that make it possible to obtain hydrocarbon oil at a high yield from polyvinyl chloride. The method for converting a plastic that includes polyvinyl chloride into an oil has a hydroxylation step S3 for hydroxylating polyvinyl chloride to form a hydroxide and a thermal decomposition step S4 for converting the hydroxide into hydrocarbon oil gas through thermal decomposition, the method making it possible to obtain hydrocarbon oil from polyvinyl chloride. The device for converting a plastic that includes polyvinyl chloride into an oil has a hydroxylation unit for hydroxylating polyvinyl chloride to form a hydroxide and a thermal decomposition unit for converting the hydroxide into hydrocarbon oil gas through thermal decomposition, the device making it possible to obtain hydrocarbon oil from polyvinyl chloride.

Description

ポリ塩化ビニル含有プラスチックの油化方法及びポリ塩化ビニル含有プラスチックの油化装置Method for converting polyvinyl chloride-containing plastic to oil and apparatus for converting polyvinyl chloride-containing plastic to oil
　本発明は、ポリ塩化ビニル含有プラスチックの油化方法及びポリ塩化ビニル含有プラスチックの油化装置に関する。 The present invention relates to a method for converting polyvinyl chloride-containing plastics to oil and an apparatus for converting polyvinyl chloride-containing plastics to oil.
　ポリ塩化ビニル（ＰＶＣ）及びポリエチレンテレフタレート（ＰＥＴ）が混在するプラスチックの油化装置として、プラスチックを加熱・溶融・保持して脱クロル・脱昇華物工程を行う溶融槽と、溶融槽で発生したガスを冷却して高沸点留分を油として凝縮させるとともに、ガス中の昇華物を油中に析出させるスプレー塔と、スプレー塔を通過したガスを冷却して低沸点留分を油として凝縮させるコンデンサーとを備えたものが提案されている（特許文献１参照）。 A melting tank that heats, melts, and holds the plastic to dechlorinate and desublimate, and the gas generated in the melting tank is cooled to condense the high boiling point fraction as oil, and the sublimate in the gas is deposited in the oil, and the gas that has passed through the spray tower is cooled and the low boiling point fraction is condensed as oil. and is proposed (see Patent Document 1).
特開２００２－８０８６１号公報JP-A-2002-80861
　しかしながら、特許文献１に記載の油化装置では、脱クロル後のポリ塩化ビニルの油化率が低いため、ポリ塩化ビニルから高収率で炭化水素油を得ることができない。 However, in the oil conversion apparatus described in Patent Document 1, the oil conversion rate of polyvinyl chloride after dechlorination is low, so hydrocarbon oil cannot be obtained from polyvinyl chloride at a high yield.
　本発明は、上記問題に鑑みてなされたものであり、ポリ塩化ビニルから高収率で炭化水素油を得ることのできるポリ塩化ビニル含有プラスチックの油化方法及びポリ塩化ビニル含有プラスチックの油化装置を提供することを目的とする。 The present invention has been made in view of the above problems, and a method for converting polyvinyl chloride-containing plastics to oil and an apparatus for converting polyvinyl chloride-containing plastics to oil, which are capable of obtaining hydrocarbon oil from polyvinyl chloride at a high yield. intended to provide
　上記目的を達成するため、本発明では、
　ポリ塩化ビニルを含むプラスチックの油化方法であって、
　前記ポリ塩化ビニルを水酸化させて水酸化物とする水酸化工程と、
　熱分解により前記水酸化物を炭化水素油ガスとする熱分解工程と、を有するポリ塩化ビニル含有プラスチックの油化方法が提供される。 In order to achieve the above object, in the present invention,
A method for producing oil from a plastic containing polyvinyl chloride,
A hydroxylation step of hydroxylating the polyvinyl chloride to form a hydroxide;
and a thermal decomposition step of thermally decomposing the hydroxide into a hydrocarbon oil gas.
　上記ポリ塩化ビニル含有プラスチックの油化方法において、
　前記水酸化工程にて、前記プラスチックを高温蒸気雰囲気で加熱することにより、前記ポリ塩化ビニルを水酸化させてもよい。 In the method for converting polyvinyl chloride-containing plastic to oil,
In the hydroxylation step, the polyvinyl chloride may be hydroxylated by heating the plastic in a high-temperature steam atmosphere.
　上記ポリ塩化ビニル含有プラスチックの油化方法において、
　前記プラスチックにアルカリ性材料を混合させてアルカリ混合物とする混合工程を有し、
　前記水酸化工程にて、前記アルカリ混合物を高温蒸気雰囲気で加熱することにより、前記ポリ塩化ビニルを水酸化するとともに、前記ポリ塩化ビニルの塩酸分を前記アルカリ性材料で中和して固体の塩としてもよい。 In the method for converting polyvinyl chloride-containing plastic to oil,
A mixing step of mixing the plastic with an alkaline material to form an alkaline mixture,
In the hydroxylation step, the polyvinyl chloride is hydroxylated by heating the alkali mixture in a high-temperature steam atmosphere, and the hydrochloric acid content of the polyvinyl chloride is neutralized with the alkaline material to form a solid salt. good too.
　上記ポリ塩化ビニル含有プラスチックの油化方法において、
　前記混合工程にて混合されたアルカリ混合物中の前記プラスチックを溶融する溶融工程を有し、
　前記水酸化工程にて、前記プラスチックが溶融した前記アルカリ混合物を高温蒸気雰囲気で加熱してもよい。 In the method for converting polyvinyl chloride-containing plastic to oil,
a melting step of melting the plastic in the alkali mixture mixed in the mixing step;
In the hydroxylation step, the alkali mixture in which the plastic is melted may be heated in a high-temperature steam atmosphere.
　上記ポリ塩化ビニル含有プラスチックの油化方法において、
　前記プラスチックは、ポリエチレンテレフタレートを含み、
　前記ポリ塩化ビニルの前記水酸化工程又は前記熱分解工程の際に、前記ポリエチレンテレフタレートの有機酸分を前記アルカリ性材料で中和して固体の塩としてもよい。 In the method for converting polyvinyl chloride-containing plastic to oil,
The plastic includes polyethylene terephthalate,
During the hydroxylation step or the thermal decomposition step of the polyvinyl chloride, the organic acid content of the polyethylene terephthalate may be neutralized with the alkaline material to form a solid salt.
　また、上記目的を達成するため、本発明では、
　ポリ塩化ビニルを含むプラスチックの油化装置であって、
　前記ポリ塩化ビニルを水酸化させて水酸化物とする水酸化部と、
　熱分解により前記水酸化物を炭化水素油ガスとする熱分解部と、を有するポリ塩化ビニル含有プラスチックの油化装置が提供される。 In addition, in order to achieve the above object, in the present invention,
A device for producing oil from plastic containing polyvinyl chloride,
a hydroxylated portion for hydroxylating the polyvinyl chloride to form a hydroxide;
and a thermal decomposition unit for thermally decomposing the hydroxide into hydrocarbon oil gas.
　上記ポリ塩化ビニル含有プラスチックの油化装置において、
　前記水酸化部は、前記プラスチックを高温蒸気雰囲気で加熱し前記ポリ塩化ビニルを水酸化させて水酸化物としてもよい。 In the apparatus for converting polyvinyl chloride-containing plastic to oil,
The hydroxylation unit may heat the plastic in a high-temperature steam atmosphere to hydroxylate the polyvinyl chloride to form a hydroxide.
　上記ポリ塩化ビニル含有プラスチックの油化装置において、
　前記プラスチックにアルカリ性材料を混合させてアルカリ混合物とする混合部を有し、
　前記水酸化部は、前記アルカリ混合物を高温蒸気雰囲気で加熱し、前記ポリ塩化ビニルを水酸化するとともに、前記ポリ塩化ビニルの塩酸分を前記アルカリ性材料で中和して固体の塩としてもよい。 In the apparatus for converting polyvinyl chloride-containing plastic to oil,
a mixing unit for mixing an alkaline material into the plastic to form an alkaline mixture;
The hydroxylation unit may heat the alkali mixture in a high-temperature steam atmosphere to hydroxylate the polyvinyl chloride, and neutralize the hydrochloric acid content of the polyvinyl chloride with the alkaline material to form a solid salt.
　上記ポリ塩化ビニル含有プラスチックの油化装置において、
　前記混合部で混合されたアルカリ混合物中の前記プラスチックを溶融する溶融部を有し、
　前記水酸化部は、前記プラスチックが溶融した前記アルカリ混合物を高温蒸気雰囲気で加熱してもよい。 In the apparatus for converting polyvinyl chloride-containing plastic to oil,
a melting section for melting the plastic in the alkali mixture mixed in the mixing section;
The hydroxylation unit may heat the alkali mixture in which the plastic is melted in a high-temperature steam atmosphere.
　上記ポリ塩化ビニル含有プラスチックの油化装置において、
　前記プラスチックは、ポリエチレンテレフタレートを含み、
　前記水酸化部又は前記熱分解部は、前記ポリエチレンテレフタレートの有機酸分を前記アルカリ性材料で中和して固体の塩としてもよい。 In the apparatus for converting polyvinyl chloride-containing plastic to oil,
The plastic includes polyethylene terephthalate,
The hydroxylation part or the thermal decomposition part may neutralize the organic acid content of the polyethylene terephthalate with the alkaline material to form a solid salt.
　本発明によれば、ポリ塩化ビニルを水酸化させてから熱分解するようにしたので、ポリ塩化ビニルから高収率で炭化水素油を得ることができる。 According to the present invention, since polyvinyl chloride is hydroxylated and then thermally decomposed, it is possible to obtain hydrocarbon oil from polyvinyl chloride at a high yield.
本発明の一実施形態を示すポリ塩化ビニル含有プラスチックの油化方法のフローチャートである。1 is a flow chart of a method for converting polyvinyl chloride-containing plastic to oil, showing one embodiment of the present invention. 塩化ビニル含有プラスチックの油化装置の模式図である。1 is a schematic diagram of a vinyl chloride-containing plastic oil converting apparatus; FIG.
　図１及び図２は本発明の一実施形態を示し、図１はポリ塩化ビニル含有プラスチックの油化方法のフローチャート、図２は塩化ビニル含有プラスチックの油化装置の模式図である。 FIGS. 1 and 2 show an embodiment of the present invention, FIG. 1 is a flow chart of a method for converting polyvinyl chloride-containing plastics to oil, and FIG. 2 is a schematic diagram of an apparatus for converting vinyl chloride-containing plastics to oil.
　このポリ塩化ビニル含有プラスチックの油化方法は、ポリ塩化ビニル（ＰＶＣ）の他に、ポリエチレンテレフタレート（ＰＥＴ）が含まれるプラスチックの油化に好適に用いることができる。具体的に、本実施形態においては、ポリ塩化ビニル含有プラスチックは、ポリ塩化ビニル（ＰＶＣ）の他に、ポリエチレンテレフタレート（ＰＥＴ）、ポリプロピレン（ＰＰ）、ポリスチレン（ＰＳ）及びポリエチレン（ＰＥ）を含んでいる。 This method of converting polyvinyl chloride-containing plastics into oils can be suitably used for converting plastics containing polyethylene terephthalate (PET) into oils in addition to polyvinyl chloride (PVC). Specifically, in this embodiment, the polyvinyl chloride-containing plastic includes polyethylene terephthalate (PET), polypropylene (PP), polystyrene (PS) and polyethylene (PE) in addition to polyvinyl chloride (PVC). there is
　図１に示すように、ポリ塩化ビニルを含むプラスチックの油化にあたり、まず、ポリ塩化ビニル含有プラスチックにアルカリ性材料を混合させてアルカリ混合物とする（ステップＳ１：混合工程）。本実施形態においては、アルカリ性材料として消石灰が用いられるが、アルカリ性材料は任意であり、例えば生石灰を用いることもできる。そして、アルカリ混合物を所定の溶融温度まで加熱して、アルカリ混合物中のプラスチックを溶融する（ステップＳ２：溶融工程）。 As shown in FIG. 1, when converting a polyvinyl chloride-containing plastic into an oil, first, an alkaline material is mixed with the polyvinyl chloride-containing plastic to form an alkaline mixture (step S1: mixing step). In this embodiment, slaked lime is used as the alkaline material, but the alkaline material is arbitrary, and quicklime, for example, can also be used. Then, the alkali mixture is heated to a predetermined melting temperature to melt the plastic in the alkali mixture (step S2: melting step).
　次に、プラスチックが溶融したアルカリ混合物中のポリ塩化ビニルを水酸化させて水酸化物とする（ステップＳ３：水酸化工程）。具体的には、ポリ塩化ビニルのクロロ基を水酸基に置換する。本実施形態においては、アルカリ混合物を高温蒸気雰囲気にて所定の水酸化温度まで加熱することにより、ポリ塩化ビニルを水酸化する。ここでいう高温蒸気には、過熱蒸気と飽和蒸気の両方が含まれ、例えば、常圧下で過熱蒸気を用いてもよいし、高圧下で飽和蒸気を用いてもよい。このとき、ポリ塩化ビニルの塩酸分は、アルカリ性材料で中和されて固体の塩となる。 Next, the polyvinyl chloride in the alkali mixture in which the plastic is melted is hydroxylated to form a hydroxide (step S3: hydration step). Specifically, the chloro group of polyvinyl chloride is substituted with a hydroxyl group. In this embodiment, the polyvinyl chloride is hydroxylated by heating the alkaline mixture to a predetermined hydroxylation temperature in a hot steam atmosphere. The high-temperature steam referred to here includes both superheated steam and saturated steam. For example, superheated steam may be used under normal pressure, and saturated steam may be used under high pressure. At this time, the hydrochloric acid content of polyvinyl chloride is neutralized with an alkaline material to form a solid salt.
　そして、ポリ塩化ビニルから生成された水酸化物を所定の熱分解温度まで加熱することにより炭化水素油ガスとする（ステップＳ４：熱分解工程）。本実施形態においては、熱分解工程Ｓ４において、ポリプロピレン、ポリスチレン及びポリエチレンは、熱分解により炭化水素油ガスとされる。また、ポリエチレンテレフタレートは、ポリ塩化ビニルの水酸化工程Ｓ３又は熱分解工程Ｓ４の際に、有機酸分がアルカリ性材料で中和されて固体の塩とされ、熱分解によりベンゼンガスとされる。この後、熱分解により生じた分解ガスは、冷却された後、分解油として回収される（ステップＳ５：回収工程）。 Then, the hydroxide produced from polyvinyl chloride is heated to a predetermined thermal decomposition temperature to obtain hydrocarbon oil gas (step S4: thermal decomposition step). In this embodiment, polypropylene, polystyrene and polyethylene are thermally decomposed into hydrocarbon oil gas in the thermal decomposition step S4. Further, in the polyvinyl chloride hydroxylation step S3 or thermal decomposition step S4, the organic acid content of polyethylene terephthalate is neutralized with an alkaline material to form a solid salt, which is thermally decomposed into benzene gas. Thereafter, the cracked gas generated by the thermal decomposition is cooled and recovered as cracked oil (step S5: recovery step).
　以上のポリ塩化ビニルを含むプラスチックの油化方法を用いた油化装置を図２に示す。図２に示すように、この油化装置１００は、圧送加熱フィーダ１１０と、加熱炉１２０と、分解ガス冷却装置１３０と、分解油回収装置１４０と、を有する。前述のように、油化対象のプラスチックは、ポリ塩化ビニルと、ポリエチレンテレフタレートと、ポリプロピレンと、ポリスチレンと、ポリエチレンと、を含んでいる。 Fig. 2 shows an oil conversion apparatus that uses the above method for converting plastics containing polyvinyl chloride into oil. As shown in FIG. 2 , this oil conversion apparatus 100 has a pressure feeding heating feeder 110 , a heating furnace 120 , a cracked gas cooling device 130 and a cracked oil recovery device 140 . As mentioned above, plastics to be oiled include polyvinyl chloride, polyethylene terephthalate, polypropylene, polystyrene, and polyethylene.
　圧送加熱フィーダ１１０は、ポリ塩化ビニルを含むプラスチックが供給されるプラスチック供給部１１１と、アルカリ性材料が供給されるアルカリ供給部１１２と、プラスチックとアルカリ性材料を混合してアルカリ混合物とする混合部１１３と、アルカリ混合物を加熱してアルカリ混合物中のプラスチックを溶融しつつ圧送する押出スクリュー１１４と、プラスチックが溶融されたアルカリ混合物を次工程の装置へ送出する混合物送出部１１５と、を有している。本実施形態においては、圧送加熱フィーダ１１０が、プラスチックにアルカリ性材料を混合させてアルカリ混合物とする混合部、及び、アルカリ混合物中のプラスチックを溶融する溶融部をなしている。具体的に、各供給部１１１から供給されたプラスチック及びアルカリ性材料は、混合部１１３で粉砕しつつ混合されて、所定の溶融温度Ｔ１まで加熱される。溶融温度Ｔ１は、プラスチックの各成分が熱分解を開始しない温度に設定され、例えば２００～２５０℃とすることができる。プラスチックが溶融したアルカリ混合物は、押出スクリュー１１４で混錬されつつ圧送され混合物送出部１１５から加熱炉１２０へ送出される。混合物送出部１１５は、圧送加熱フィーダ１１０の内外で気体が出入しないよう構成されており、後述する加熱炉１２０で生じるガスが圧送加熱フィーダ１１０内に逆流することはない。 The pressurizing and heating feeder 110 includes a plastic supply section 111 that supplies plastic containing polyvinyl chloride, an alkali supply section 112 that supplies an alkaline material, and a mixing section 113 that mixes the plastic and the alkaline material to form an alkaline mixture. , an extrusion screw 114 that heats the alkali mixture to melt the plastic in the alkali mixture and pumps it, and a mixture delivery unit 115 that delivers the alkali mixture in which the plastic is melted to the next process device. In this embodiment, the pressure feeding and heating feeder 110 serves as a mixing section that mixes the plastic with an alkaline material to form an alkaline mixture, and a melting section that melts the plastic in the alkaline mixture. Specifically, the plastic and the alkaline material supplied from each supply unit 111 are pulverized and mixed in the mixing unit 113 and heated to a predetermined melting temperature T1. The melting temperature T1 is set to a temperature at which each component of the plastic does not initiate thermal decomposition, and can be set to 200-250° C., for example. The alkali mixture in which the plastic is melted is kneaded by the extrusion screw 114 and is pressure-fed and delivered from the mixture delivery section 115 to the heating furnace 120 . The mixture delivery unit 115 is configured so that gas does not enter and exit the pressurizing and heating feeder 110 , and the gas generated in the heating furnace 120 described later does not flow back into the pressurizing and heating feeder 110 .
　加熱炉１２０は、プラスチックが溶融した状態のアルカリ混合物が供給される混合物供給部１２１と、高温蒸気が供給される水蒸気供給部１２２と、アルカリ混合物が投入されるとともに高温蒸気が導入される炉本体１２３と、炉本体１２３で生じた残渣を排出する残渣排出部１２４と、炉本体１２３で生じた分解ガスを次工程の装置へ送出する分解ガス送出部１２５と、を有している。本実施形態においては、加熱炉１２０が、ポリ塩化ビニルを水酸化させて水酸化物とする水酸化部、及び、水酸化物を熱分解により炭化水素油ガスとする熱分解部をなしている。具体的に、アルカリ混合物は、炉本体１２３内にて水蒸気供給部１２２からの高温蒸気により加熱される。アルカリ混合物は、所定の水酸化温度Ｔ２へ達すると、ポリ塩化ビニルが水酸化されて水酸化物となり、ポリ塩化ビニルの塩酸分がアルカリ性材料で中和されて第１の固体の塩となる。本実施形態においては、アルカリ性材料として消石灰が用いられていることから、第１の固体の塩として塩化カルシウムが得られる。そして、水酸化物は、所定の熱分解温度Ｔ３へ達すると、第１の炭化水素油ガスに熱分解される。水酸化温度Ｔ２は、２００～４００℃であり、本実施形態においては４００℃である。また、熱分解温度Ｔ３は、ポリ塩化ビニルの水酸化物が熱分解する温度に設定され、例えば４８０～５００℃とすることができる。 The heating furnace 120 includes a mixture supply section 121 to which an alkali mixture in which plastic is melted is supplied, a steam supply section 122 to which high-temperature steam is supplied, and a furnace body into which the alkali mixture is introduced and high-temperature steam is introduced. 123, a residue discharge unit 124 for discharging residue generated in the furnace main body 123, and a cracked gas delivery unit 125 for sending the cracked gas produced in the furnace main body 123 to the next process apparatus. In the present embodiment, the heating furnace 120 serves as a hydroxylation unit for hydroxylating polyvinyl chloride to form a hydroxide, and a thermal decomposition unit for thermally decomposing the hydroxide into a hydrocarbon oil gas. . Specifically, the alkali mixture is heated within the furnace body 123 by high-temperature steam from the steam supply section 122 . When the alkali mixture reaches a predetermined hydroxylation temperature T2, the polyvinyl chloride is hydroxylated to form a hydroxide, and the hydrochloric acid content of the polyvinyl chloride is neutralized with the alkaline material to form a first solid salt. In this embodiment, since slaked lime is used as the alkaline material, calcium chloride is obtained as the first solid salt. Then, when the hydroxide reaches a predetermined thermal decomposition temperature T3, it is thermally decomposed into the first hydrocarbon oil gas. The hydroxylation temperature T2 is 200 to 400°C, and 400°C in this embodiment. The thermal decomposition temperature T3 is set to a temperature at which polyvinyl chloride hydroxide thermally decomposes, and can be set to 480 to 500° C., for example.
　また、アルカリ混合物中のポリエチレンテレフタレートは、熱分解温度Ｔ３へ達するまでに、有機酸分がアルカリ性材料で中和されて第２の固体の塩となり、ベンゼンガスに熱分解される。本実施形態においては、アルカリ性材料として消石灰が用いられていることから、第２の固体の塩として安息香酸カルシムが得られる。さらに、アルカリ混合物中のポリプロピレン、ポリスチレン及びポリエチレンは、熱分解温度Ｔ３へ達するまでに、それぞれ第２炭化水素油ガス、第３炭化水素油ガス及び第４炭化水素油ガスに熱分解される。 In addition, the polyethylene terephthalate in the alkaline mixture is thermally decomposed into benzene gas by neutralizing the organic acid content with the alkaline material to form a second solid salt before reaching the thermal decomposition temperature T3. In this embodiment, since slaked lime is used as the alkaline material, calcium benzoate is obtained as the second solid salt. Furthermore, the polypropylene, polystyrene and polyethylene in the alkali mixture are thermally decomposed into the second hydrocarbon oil gas, the third hydrocarbon oil gas and the fourth hydrocarbon oil gas, respectively, before reaching the thermal decomposition temperature T3.
　炉本体１２３で生じた第１及び第２の固体の塩は、残渣として残渣排出部１２４から排出される。また、炉本体１２３で生じた第１～第４炭化水素油ガス及びベンゼンガスは、分解ガスとして分解ガス送出部１２５から次工程の装置へ送出される。本実施形態においては、分解ガスは、高温蒸気とともに送出される。加熱炉１２０から送出された分解ガス及び高温蒸気は、分解カス冷却装置１３０で冷却された後、分解油回収装置１４０で分解油及び水として回収される。 The first and second solid salts generated in the furnace body 123 are discharged from the residue discharging section 124 as residues. Further, the first to fourth hydrocarbon oil gases and benzene gas generated in the furnace body 123 are delivered as cracked gas from the cracked gas delivery section 125 to the device for the next process. In this embodiment, the cracked gas is delivered with the hot steam. The cracked gas and high-temperature steam sent out from the heating furnace 120 are cooled by the cracked residue cooling device 130 and then recovered as cracked oil and water by the cracked oil recovery device 140 .
　以上のように構成された油化装置１００によれば、ポリ塩化ビニルを水酸化させた後に熱分解するようにしたので、ポリ塩化ビニルから高収率で炭化水素油を得ることができる。また、ポリ塩化ビニルの水酸化に先だって、プラスチックが溶融したアルカリ混合物を混錬するようにしたので、プラスチックとアルカリ性材料をムラなく混合させることができ、ポリ塩化ビニルの水酸化を的確に行うことができる。 According to the oil conversion apparatus 100 configured as described above, polyvinyl chloride is hydroxylated and then thermally decomposed, so that hydrocarbon oil can be obtained from polyvinyl chloride at a high yield. Further, prior to the hydroxylation of the polyvinyl chloride, the alkali mixture in which the plastic is melted is kneaded, so that the plastic and the alkaline material can be evenly mixed, and the polyvinyl chloride can be appropriately hydroxylated. can be done.
　また、ポリ塩化ビニルの塩酸分を第１の固体の塩として排出するようにしたので、分解時に塩化水素ガスが生じて各装置の配管等が腐食等することはない。さらに、ポリエチレンテレフタレートの有機酸分を第２の固体の塩として排出するようにしたので、分解時に安息香酸ガス等が生じて各装置の配管等が腐食等することもない。 In addition, since the hydrochloric acid content of polyvinyl chloride is discharged as the first solid salt, hydrogen chloride gas is generated during decomposition, which will not corrode the piping of each device. Furthermore, since the organic acid component of polyethylene terephthalate is discharged as a second solid salt, benzoic acid gas or the like is generated during decomposition, and the piping of each device is not corroded.
　尚、前記実施形態においては、油化対象のプラスチックとして、ポリ塩化ビニルの他に、ポリエチレンテレフタレート、ポリプロピレン、ポリスチレン、ポリエチレン等の他のプラスチック材料が含まれるものを示したが、ポリ塩化ビニル以外のブラスチック材料は含まれていなくともよいことは勿論である。 In the above-described embodiment, plastics to be oiled include, in addition to polyvinyl chloride, other plastic materials such as polyethylene terephthalate, polypropylene, polystyrene, and polyethylene. Of course, the plastic material need not be included.
　また、前記実施形態においては、ポリ塩化ビニルの水酸化並びに水酸化物の熱分解を１つの加熱炉１２０で行うものを示したが、水酸化と熱分解を別個の加熱炉で行うようにしてもよい。また、アルカリ混合物中のプラスチックを溶融した状態でアルカリ混合物を混錬するものを示したが、ポリ塩化ビニルの水酸化に支障がない程度に、アルカリ混合物中でポリ塩化ビニル及びアルカリ性材料が分散されていれば、アルカリ混合物中のプラスチックを溶融したりアルカリ混合物を混錬したりする必要はない。さらには、アルカリ性材料を圧送加熱フィーダ１１０に加えて加熱炉１２０でも追加的に投入してもよいし、アルカリ性材料を圧送加熱フィーダ１１０でなく加熱炉１２０で投入するようにしてもよい。 Further, in the above embodiment, the hydroxylation of polyvinyl chloride and the thermal decomposition of the hydroxide are performed in one heating furnace 120, but the hydroxylation and thermal decomposition are performed in separate heating furnaces. good too. In addition, although the alkali mixture is kneaded while the plastic in the alkali mixture is melted, the polyvinyl chloride and the alkaline material are dispersed in the alkali mixture to the extent that the hydroxylation of the polyvinyl chloride is not hindered. If so, there is no need to melt the plastic in the alkaline mixture or knead the alkaline mixture. Furthermore, the alkaline material may be added to the pressurized heating feeder 110 and additionally fed from the heating furnace 120 , or the alkaline material may be fed from the heating furnace 120 instead of the pressurized heating feeder 110 .
　以上、本発明の実施の形態を説明したが、上記に記載した実施の形態は特許請求の範囲に係る発明を限定するものではない。また、実施の形態の中で説明した特徴の組合せの全てが発明の課題を解決するための手段に必須であるとは限らない点に留意すべきである。 Although the embodiment of the present invention has been described above, the embodiment described above does not limit the invention according to the scope of claims. Also, it should be noted that not all combinations of features described in the embodiments are essential to the means for solving the problems of the invention.
　１００  油化装置
　１１０  圧送加熱フィーダ
　１１１  プラスチック供給部
　１１２  アルカリ供給部
　１１３  混合部
　１１４  押出スクリュー
　１１５  混合物送出部
　１２０  加熱炉
　１２１  混合物供給部
　１２２  水蒸気供給部
　１２３  炉本体
　１２４  残渣排出部
　１２５  分解ガス送出部
　１３０  分解ガス冷却装置
　１４０  分解油回収装置
　Ｓ１  混合工程
　Ｓ２  溶融工程
　Ｓ３  水酸化工程
　Ｓ４  熱分解工程
　Ｓ５  回収工程 REFERENCE SIGNS LIST 100 oil conversion unit 110 pressure heating feeder 111 plastic supply unit 112 alkali supply unit 113 mixing unit 114 extrusion screw 115 mixture supply unit 120 heating furnace 121 mixture supply unit 122 steam supply unit 123 furnace body 124 residue discharge unit 125 cracked gas supply unit 130 Cracked gas cooling device 140 Cracked oil recovery device S1 Mixing process S2 Melting process S3 Hydration process S4 Thermal decomposition process S5 Recovery process

Claims (10)

  1. 　ポリ塩化ビニルを含むプラスチックの油化方法であって、
    　前記ポリ塩化ビニルを水酸化させて水酸化物とする水酸化工程と、
    　熱分解により前記水酸化物を炭化水素油ガスとする熱分解工程と、を有するポリ塩化ビニル含有プラスチックの油化方法。     A method for producing oil from a plastic containing polyvinyl chloride,
    A hydroxylation step of hydroxylating the polyvinyl chloride to form a hydroxide;
    and a thermal decomposition step of thermally decomposing the hydroxide into a hydrocarbon oil gas.
  2. 　前記水酸化工程にて、前記プラスチックを高温蒸気雰囲気で加熱することにより、前記ポリ塩化ビニルを水酸化させる請求項１に記載のポリ塩化ビニル含有プラスチックの油化方法。 The method for converting polyvinyl chloride-containing plastics to oil according to claim 1, wherein in the hydroxylation step, the polyvinyl chloride is hydroxylated by heating the plastic in a high-temperature steam atmosphere.
  3. 　前記プラスチックにアルカリ性材料を混合させてアルカリ混合物とする混合工程を有し、
    　前記水酸化工程にて、前記アルカリ混合物を高温蒸気雰囲気で加熱することにより、前記ポリ塩化ビニルを水酸化するとともに、前記ポリ塩化ビニルの塩酸分を前記アルカリ性材料で中和して固体の塩とする請求項２に記載のポリ塩化ビニル含有プラスチックの油化方法。     A mixing step of mixing the plastic with an alkaline material to form an alkaline mixture,
    In the hydroxylation step, the polyvinyl chloride is hydroxylated by heating the alkali mixture in a high-temperature steam atmosphere, and the hydrochloric acid content of the polyvinyl chloride is neutralized with the alkaline material to form a solid salt. The method for converting polyvinyl chloride-containing plastics into oil according to claim 2.
  4. 　前記混合工程にて混合されたアルカリ混合物中の前記プラスチックを溶融する溶融工程を有し、
    　前記水酸化工程にて、前記プラスチックが溶融した前記アルカリ混合物を高温蒸気雰囲気で加熱する請求項３に記載のポリ塩化ビニル含有プラスチックの油化方法。     a melting step of melting the plastic in the alkali mixture mixed in the mixing step;
    4. The method for converting polyvinyl chloride-containing plastics to oil according to claim 3, wherein in the hydroxylation step, the alkali mixture in which the plastics are melted is heated in a high-temperature steam atmosphere.
  5. 　前記プラスチックは、ポリエチレンテレフタレートを含み、
    　前記ポリ塩化ビニルの前記水酸化工程又は前記熱分解工程の際に、前記ポリエチレンテレフタレートの有機酸分を前記アルカリ性材料で中和して固体の塩とする請求項４に記載のポリ塩化ビニル含有プラスチックの油化方法。     The plastic includes polyethylene terephthalate,
    5. The polyvinyl chloride-containing plastic according to claim 4, wherein the organic acid content of the polyethylene terephthalate is neutralized with the alkaline material to form a solid salt during the hydroxylation step or the thermal decomposition step of the polyvinyl chloride. oil conversion method.
  6. 　ポリ塩化ビニルを含むプラスチックの油化装置であって、
    　前記ポリ塩化ビニルを水酸化させて水酸化物とする水酸化部と、
    　熱分解により前記水酸化物を炭化水素油ガスとする熱分解部と、を有するポリ塩化ビニル含有プラスチックの油化装置。     A device for producing oil from plastic containing polyvinyl chloride,
    a hydroxylated portion for hydroxylating the polyvinyl chloride to form a hydroxide;
    and a thermal decomposition part for thermally decomposing the hydroxide into hydrocarbon oil gas.
  7. 　前記水酸化部は、前記プラスチックを高温蒸気雰囲気で加熱し前記ポリ塩化ビニルを水酸化させて水酸化物とする請求項６に記載のポリ塩化ビニル含有プラスチックの油化装置。 The apparatus for converting polyvinyl chloride-containing plastics to oil according to claim 6, wherein the hydroxylation unit heats the plastics in a high-temperature steam atmosphere to hydroxylate the polyvinyl chloride to form a hydroxide.
  8. 　前記プラスチックにアルカリ性材料を混合させてアルカリ混合物とする混合部を有し、
    　前記水酸化部は、前記アルカリ混合物を高温蒸気雰囲気で加熱し、前記ポリ塩化ビニルを水酸化するとともに、前記ポリ塩化ビニルの塩酸分を前記アルカリ性材料で中和して固体の塩とする請求項７に記載のポリ塩化ビニル含有プラスチックの油化装置。     a mixing unit for mixing an alkaline material into the plastic to form an alkaline mixture;
    The hydroxylation unit heats the alkali mixture in a high-temperature steam atmosphere to hydroxylate the polyvinyl chloride, and neutralizes the hydrochloric acid content of the polyvinyl chloride with the alkaline material to form a solid salt. 8. The apparatus for converting polyvinyl chloride-containing plastics to oil according to 7 above.
  9. 　前記混合部で混合されたアルカリ混合物中の前記プラスチックを溶融する溶融部を有し、
    　前記水酸化部は、前記プラスチックが溶融した前記アルカリ混合物を高温蒸気雰囲気で加熱する請求項８に記載のポリ塩化ビニル含有プラスチックの油化装置。     a melting section for melting the plastic in the alkali mixture mixed in the mixing section;
    9. The apparatus for converting polyvinyl chloride-containing plastics to oil according to claim 8, wherein said hydroxylation unit heats said alkali mixture in which said plastics are melted in a high-temperature steam atmosphere.
  10. 　前記プラスチックは、ポリエチレンテレフタレートを含み、
    　前記水酸化部又は前記熱分解部は、前記ポリエチレンテレフタレートの有機酸分を前記アルカリ性材料で中和して固体の塩とする請求項９に記載のポリ塩化ビニル含有プラスチックの油化装置。     The plastic includes polyethylene terephthalate,
    10. The equipment for converting polyvinyl chloride-containing plastics to oil according to claim 9, wherein said hydroxylation unit or said thermal decomposition unit neutralizes the organic acid content of said polyethylene terephthalate with said alkaline material to form a solid salt.
PCT/JP2022/045950 2021-12-14 2022-12-13 Method for converting polyvinyl-chloride-containing plastic into oil and device for converting polyvinyl-chloride-containing plastic into oil WO2023112937A1 (en)

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* Cited by examiner, † Cited by third party
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JPH07188674A (en) * 1993-12-27 1995-07-25 Mitsubishi Chem Corp Method for heat decomposition of synthetic halogenated resin
JPH07286063A (en) * 1994-04-15 1995-10-31 Mitsui Petrochem Ind Ltd Production of oily matter by thermal decomposition of synthetic polymer
WO1996040839A1 (en) * 1995-06-07 1996-12-19 Ngk Insulators, Ltd. Process for producing low-boiling oil from waste plastics containing phthalic polyester and/or polyvinyl chloride
JPH10101841A (en) * 1996-09-27 1998-04-21 Mitsubishi Heavy Ind Ltd Thermal treatment of waste
JP2008095024A (en) * 2006-10-13 2008-04-24 Toshiba Corp Waste plastic recycling system
JP2010155944A (en) * 2008-12-29 2010-07-15 Aasu Recycle Kk Waste plastic liquefaction device
JP2011184673A (en) * 2010-03-10 2011-09-22 Ramusa Abe:Kk Thermal decomposition method of mixed waste plastic and thermal decomposition apparatus of mixed waste plastic
JP2013028687A (en) * 2011-07-27 2013-02-07 Sumitomo Osaka Cement Co Ltd Method of liquefying waste plastic

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07188674A (en) * 1993-12-27 1995-07-25 Mitsubishi Chem Corp Method for heat decomposition of synthetic halogenated resin
JPH07286063A (en) * 1994-04-15 1995-10-31 Mitsui Petrochem Ind Ltd Production of oily matter by thermal decomposition of synthetic polymer
WO1996040839A1 (en) * 1995-06-07 1996-12-19 Ngk Insulators, Ltd. Process for producing low-boiling oil from waste plastics containing phthalic polyester and/or polyvinyl chloride
JPH10101841A (en) * 1996-09-27 1998-04-21 Mitsubishi Heavy Ind Ltd Thermal treatment of waste
JP2008095024A (en) * 2006-10-13 2008-04-24 Toshiba Corp Waste plastic recycling system
JP2010155944A (en) * 2008-12-29 2010-07-15 Aasu Recycle Kk Waste plastic liquefaction device
JP2011184673A (en) * 2010-03-10 2011-09-22 Ramusa Abe:Kk Thermal decomposition method of mixed waste plastic and thermal decomposition apparatus of mixed waste plastic
JP2013028687A (en) * 2011-07-27 2013-02-07 Sumitomo Osaka Cement Co Ltd Method of liquefying waste plastic

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