METHOD FOR PYROLYTICALLY REDUCING PLASTIC WASTES TO OIL AND APPARATUS THEREFOR

PROBLEM TO BE SOLVED: To provide a method for pyrolytically reducing plastic wastes to oil wherein agglomeration of residues in a pyrolizing furnace can be prevented, the gasifying rate of high boiling-point refluxing liquid components can be increased, and the energy consumed for heating can be red...

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Hauptverfasser:	YAMADA RYOKICHI, KOYAMA SHUNTARO, YAMASHITA HISAO, MATSUSHIMA TOKUNORI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT COMPOSITIONS BASED THEREON CRACKING HYDROCARBON OILS FUELS GENERAL PROCESSES OF COMPOUNDING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS LUBRICANTS METALLURGY MINERAL WAXES ORGANIC MACROMOLECULAR COMPOUNDS PEAT PETROLEUM, GAS OR COKE INDUSTRIES PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA TECHNICAL GASES CONTAINING CARBON MONOXIDE TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for pyrolytically reducing plastic wastes to oil wherein agglomeration of residues in a pyrolizing furnace can be prevented, the gasifying rate of high boiling-point refluxing liquid components can be increased, and the energy consumed for heating can be reduced. SOLUTION: Plastic wastes are pyrolytically gasified in the pyrolizing furnace heated by a heater. The pyrolyzed gas thus formed is cooled and condensed in a first cooler to liquefy high boiling-point components. Low boiling-point gas components are separated from the high boiling-point liquid components in a refluxing vessel. The low boiling-point gas components separated in the refluxing vessel are subjected to cooling/condensing in a second cooler located downstream of the refluxing vessel to form an oil. The high boiling-point components are gasified through decomposition in a refluxed liquid decomposition/gasification furnace located between the pyrolizing furnace and the refluxing vessel, and then refluxed to the first cooler. COPYRIGHT: (C)2004,JPO