Abstract: The increase amount of waste plastic products brings about increasingly serious environmental pollution problems. Using pyrolysis technology to treat waste plastics can not only reduce environmental pollution, but also is an important way to realize chemical recovery of waste plastics. The source of waste plastics is extensive, which leads to many impurities in waste plastic pyrolysis oil, and limits the direct utilization of waste plastics pyrolysis oil. Therefore, it is necessary to adopt the post-treatment process of pyrolysis oil of waste plastics to promote the high-value utilization of waste plastics. In addition, it is very important to analyze the composition of waste plastic pyrolysis oil, which is helpful to adopt the targeted processing technolgy. In this paper, the research progress of the composition analysis of waste plastics pyrolysis oil in recent years was reviewed, processing technology of waste plastic pyrolysis oil, such as dechlorination and hydrofining, was introduced, and the prospect of processing technology of waste plastic pyrolysis oil was put forward.

Key words: plastic wastes, plastics pyrolysis, analysis of composition, deichlorination, hydrorefining