A METHOD FOR PRODUCING A LUBE OIL FROM A FISCHER-TROPSCH WAX

摘要

A method of upgrading wax feedstock product from a Fischer-Tropsch synthesis reaction comprising C5+ hydrocarbons, which comprises treating the wax feedstock by subjecting the wax feedstock and a source of hydrogen to a temperature in the range 200 to 400° C and a pressure in the range 20 to 100 bar (2 MPa to 10 MPa) at a hydrogen to hydrocarbon liquid volumetric flow rate of 100 to 1000 N1 H2 per 1 liquid hydrocarbon feed, over at least one bifunctional hydrogenation active catalyst, and subsequently fractionating the treated product to produce a base oil fraction. The feedstock comprises the entire C 5+ fraction from an FT synthesis containing at least 0.2 wt% oxygen as oxygenates and having a C5 - C9/C10+ weight ratio of at least 0.05.