Catalytic Hydroprocessing of Plastic Waste to Valuable Hydrocarbons

The possibility of hydroprocessing the plastic waste pyrolysis product to produce valuable hydrocarbons was investigated. Catalytic tests were conducted in a flow mode at T = 310°C, PH2 = 80 bar, and LHSV = 1 h–1 over a fixed bed of a macro–mesoporous CoMoNi/Al2O3 catalyst using a pyrolysis oil fraction (polyethylene–polypropylene mixture) with Tboil < 360°C as the feedstock. The hydroprocessing led to the formation of a product exhibiting the properties of kerosene, except for boiling point and cloud point. It was found that acidic additives (zeolite or zeolite-like materials) should be introduced into the catalyst for the implementation of isomerization and cracking processes.