THERMAL DECOMPOSITION METHOD AND THERMAL DECOMPOSITION APPARATUS FOR POLYMER WASTE

摘要

PROBLEM TO BE SOLVED: To provide a thermal decomposition method and a thermal decomposition apparatus for a polymer waste, improved in productivity without decreasing the reinforcement characteristics etc. of carbon black recovered from the polymer waste.SOLUTION: When the polymer waste is pyrolyzed, a circulating flow is applied to the polymer waste in a heating process of the second time or later among at least two or more heating processes.