Abstract: In order to realize the circular economy of plastics, the catalytic cracking reaction rule, product distribution and composition characteristics of pyrolysis oil from waste plastics were explored by using the catalyst CGP and DMMC-2, respectively. The results showed that the pyrolysis oil of waste plastics had good performance in the production of gasoline or/and the raw chemicals by catalytic cracking. When aiming at increasing gasoline production, the gasoline yield can reach 52.37%, and the liquefied gas yield is 19.01%, of which the propylene yield is 7.82%; when the production of raw chemicals is the goal, the total yield of low carbon olefins and benzene, toluene and xylene (BTX) can reach 47.82%, of which the ethylene, propylene and butane yield is 32.51% and the propylene yield is 16.67%, and the yield of BTX reaches 15.31%, in which xylene is the dominate. The research results can provide a guidance for the development of high-value utilization technology of waste plastic pyrolysis oil.

Key words: waste plastic pyrolysis oil, catalytic cracking, gasoline, light olefins, light aromatics