METHOD OF AND APPARATUS FOR REGENERATING WASTE POLYVINYL CHLORIDE.

摘要

A method of regenerating waste polyvinyl chloride according to the present invention includes the steps of bringing polyvinyl chloride-containing industrial waste into contact with a solvent in which polyvinyl chloride can be dissolved, to elute polyvinyl chloride from the industrial waste, removing substances which cannot be dissolved in this solvent from a polyvinyl chloride solution consisting of the solvent and the polyvinyl chloride dissolved therein, and recovering regenerated polyvinyl chloride as a substance left over when the solvent is removed from the polyvinyl solution. The industrial waste to be regenerated includes polyvinyl chloride chips obtained from waste electric wires, polyvinyl chloride-impregnated wall paper and used agricultural polyvinyl chloride sheets. The solvent used in the present invention consists of at least one kind of organic solvent selected from the group composed of methyl ethyl ketone, methyl isobutyl ketone and dioctyl phthalate.