METHOD FOR OPERATING DECHLORINATION TREATMENT APPARATUS OF WASTE PLASTIC

摘要

PROBLEM TO BE SOLVED: To operate a dechlorination treatment apparatus of a waste plastic with a properly adjusted chlorine concentration after dechlorination in a waste plastic by readily and accurately measuring a chlorine concentration in the waste plastic. SOLUTION: The method for operating an apparatus for a dechlorination treatment of a waste plastic, comprising a preheating apparatus 1 for plasticizing a waste plastic P containing a chlorine-containing polymer and transporting while raising the temperature thereof, and a dechlorination apparatus 2 where the melted waste plastic is fed from the preheating apparatus 1 and is separated into a treated waste plastic F and a chlorine compound, comprises obtaining a sample A from the treated waste plastic F, measuring a chlorine content in each sample A, and controlling on the basis of the chlorine content at least one of a residence time and a temperature of the waste plastic in the dechlorination treatment apparatus.