CATALYSTS

摘要

A process for regenerating a spent particulate wax-containing cobalt-based Fischer-Tropsch synthesis catalyst is provided. The process includes subjecting the spent wax-containing catalyst sequentially to a dewaxing treatment, an oxidation treatment and a reduction treatment. During the dewaxing treatment, the spent wax-containing catalyst is at least partially dewaxed, with dewaxed catalyst particles being produced. During the oxidation treatment, an oxygen-containing gas is passed through a bed of the dewaxed catalyst particles at an operating temperature T°C where 150<T<450, and the operating temperature is controlled by removing heat from the catalyst particle bed using a cooling device, to obtain oxidized catalyst particles. During the reduction treatment, the oxidized catalyst particles are reduced, thereby regenerating the catalyst.