This process is a catalytic cracking process for waste plastics, which refers to the cracking of plastics such as polyvinyl chloride (PVC), polyethylene (PE), and polypropylene (PP) into fuels including dry gas, liquefied gas, hydrogen, and petrol under high temperature and high pressure conditions, while by-products such as chlorine, sodium hypochlorite, and dilute hydrochloric acid are also generated. Exhaust gases are generated from facilities and equipment such as the raw material pretreatment unit, pyrolysis unit, wastewater treatment plant, and circulating water plant, mainly consisting of NMVOCs, particulate matter, sulfur dioxide, and certain heavy metal pollutants. Wastewater is primarily produced from the pyrolysis unit and waste salt decomposition unit. Waste metals and salt sludge generated during the treatment process are classified as general industrial waste and are sold externally for recycling and treatment. Spent activated carbon and spent catalysts/slag are hazardous wastes, which are handed over to qualified enterprises for disposal.