PYROLYSIS AND LIQUEFACTION OF POLYMER AND APPARATUS THEREFOR

摘要

PROBLEM TO BE SOLVED: To reduce a solid residual amount and efficiently pyrolyze a polymer compound by pyrolyzing and gasifying a thermosetting resin in the presence of an oil having higher boiling point than a temperature for gasifying the resin, condensing and then liquefying the gas. SOLUTION: In this method for pyrolyzing and gasifying a polymer compound such as a thermosetting resin or thermoplastic resin and then condensing and liquifying the resultant gas, a film or sheet-like resin contained in a polymer waste matter 30 is previously heated and cured in a pretreating tank 1 and the treated material is recovered into a recovery tank 5 and the pyrolyzed oil is separated and recovered into a pyrolyzed oil recovery tank 7 and the recovered waste plastic 200 is crushed by a crusher 9 and pyrolyzed in a first pyrolyzing tank 10 and high boiling point component of the produced gas is condensed in a first cooler 11 and pyrolyzed oil having >=300 deg.C boiling point is separated by a gas-liquid separator 12 and fed to a second pyrolyzing tank 13. A termosetting resin 14 is fed thereto and pyrolyzed and gasified in the presence of an oil having >=300 deg.C boiling point which is higher than gasification temperature of the resin and condensed and liquefied in a second cooler 15.