CLEANING METHOD FOR CONTAINER AND MEMBER CONTAINING ORGANIC CHLORINE COMPOUND PCB OIL

摘要

PROBLEM TO BE SOLVED: To provide a new cleaning method which makes containers and members containing PCB, i.e., organic chlorine compounds, harmless and is simple, economical, and capable of treating in a short time.;SOLUTION: An apparatus is used which comprises tank A, tank B, a vacuum pump, tank C, and an ultrasonic apparatus, an electrostatic induction apparatus, and an electric heater installed at the bottom of tank A. An object to be treated, i.e., a container or member containing a PCB oil, is opened and is put into tank A. While the object is being heated at 60-80°C by the electric heater, the PCB oil is sucked from tank A into tank B with the vacuum pump, and the valve of tank B is opened to send the oil into tank C and simultaneously a carbon dioxide gas is injected into tank A. Then, an ultrasonic wave is applied to clean the object.;COPYRIGHT: (C)2002,JPO