Method of producing pyrolysis products from a mixed plastics stream

A method of producing pyrolysis products from a mixed plastics stream, the method comprising:

• (a) conducting pyrolysis of a plastic feedstock to produce a stream of plastic pyrolysis oil;
• (b) feeding the plastic pyrolysis oil to a first fractionator to separate the plastic pyrolysis oil into a distillate fraction comprising hydrocarbons boiling in the range of 36 to 370° C. and a vacuum gas oil fraction comprising hydrocarbons boiling above 370° C.;
• and
• (c) feeding the distillate fraction to a two step oligomerization operation, the two step oligomerization operation comprising:
• i. feeding the distillate fraction to a first hydrotreating unit configured and operated to remove di-olefins by hydrogenation from the distillate fraction to produce a first product stream of dediolefinized plastic pyrolysis distillate;
• and
• ii. feeding the first product stream to an olefin oligomerization reactor configured and operated to react and combine mono-olefins in the first product stream to form longer chain olefins and produce a second product stream of oligomerized plastic pyrolysis distillate.