Hydrofining of Oil Shale Pyrolysis Tar in the Presence of Ultradispersed Catalysts

Abstract

The results of the catalytic hydroconversion of oil shale pyrolysis tar in the presence of in situ and ex situ synthesized ultradispersed and nanosized MoS₂ particles in a flow reactor at a hydrogen pressure of 7MPa, a temperature of 430–450°C, a feed space velocity of 1–2.9 h^–1, and an H₂/feed flow ratio of 1000 L(NTP)/L with and without recycling the unconverted residue are reported. The optimum conditions of hydroconversion under which the yield of distillate fractions was 91.9 wt % on a raw material basis are proposed. It is shown that the quality of the refined synthetic oil makes it possible to use it in traditional petrochemical processes.