초록

Hydrocarbon synthesis is carried out in a two stage process wherein the pressure in the first stage is relatively higher and the pressure in the second stage is relatively lower and the second stage catalyst comprises cobalt on alumina.

대표청구항 ▼

A two stage hydrocarbon synthesis process comprising: (a) reacting in a first stage, hydrogen and carbon monoxide in the presence of a supported cobalt or ruthenium catalyst and obtaining a CO conversion to C2+hydrocarbons of at least 50% at reaction conditions including a pressure of at least 10 at

A two stage hydrocarbon synthesis process comprising: (a) reacting in a first stage, hydrogen and carbon monoxide in the presence of a supported cobalt or ruthenium catalyst and obtaining a CO conversion to C2+hydrocarbons of at least 50% at reaction conditions including a pressure of at least 10 atmospheres; (b) recovering a reaction product comprising hydrogen and carbon monoxide and separating liquid therefrom; (c) reacting in a second stage, at a pressure below 10-12 atmospheres and no greater than the outlet pressure of the first stage, the remaining reaction products in the presence of a catalyst comprising catalytically effective amounts of cobalt supported on alumina at reaction conditions; and (d) wherein the second stage catalyst is at least as active for CO conversion to C2+hydrocarbons as the first stage catalyst at second stage reaction pressure.