METHOD FOR TREATING WASTE PLASTICS

PURPOSE: To provide a method for treating a waste plastics by which chlorine is nearly completely removed from the waste plastics and the dechlorinated waste plastics is further decomposed and recovered as useful products. CONSTITUTION: This method for treating a waste plastics comprises the first s...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WASAKA SADAO, HANEDA MORIYA, KAMEYAMA MITSUO, TATSUMOTO KATSUMITSU
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON CRACKING HYDROCARBON OILS DISPOSAL OF SOLID WASTE FUELS GENERAL PROCESSES OF COMPOUNDING LUBRICANTS METALLURGY MINERAL WAXES ORGANIC MACROMOLECULAR COMPOUNDS PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECLAMATION OF CONTAMINED SOIL SOIL RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE: To provide a method for treating a waste plastics by which chlorine is nearly completely removed from the waste plastics and the dechlorinated waste plastics is further decomposed and recovered as useful products. CONSTITUTION: This method for treating a waste plastics comprises the first step for mixing the waste plastics with one or more oils selected from a petroleum-based oil and a coal-based oil and swelling the waste plastics, the second step for heating the resultant mixture at 150-350 deg.C and removing chlorine in the waste plastics, the third step for mixing the mixture after dechlorination with a medium oil and/or a heavy oil to be recovered in the fourth step and then heating the prepared mixture at 400-485 deg.C under 30-80kg/m pressure and the fourth step for recovering gases and a light oil from the heated mixture, providing a mixture containing the medium oil, heavy oil and solids and circulating the mixture or all or a part of the medium oil and heavy oil separated therefrom through the mixing in the third step.