Development of a Catalytic Reduction System for Waste Plastics to Petrochemicals

摘要

The catalytic degradation of waste plastics using H-gallosilicates was examined by the equipment of continuous feeding (1.0kg/hr) using three kinds of polyolefin plastics (high-density polyethylene pellets, polyethylene pellets from industrial waste, polyolefin (PRF) pellets from the Containers and Packaging Recycling Law). The main products were benzene, toluene, and xylenes (BTX), total amount of which was about 50 wt% and does not depend the type of plastics except RPF. Gases of C_3 to C_5 from RPF were more than those from others. After the operation of 40 days, coking and sintering of catalyst were observed, showing that the optimization of regeneration conditions was needed for long-term operations.