Patent ID: 8859631
Filing Date: 2014-10-14
Classification: C07C,C10G

Abstract:
1. A process for the conversion of synthesis gas into hydrocarbons comprising the steps of; (i) passing a synthesis gas comprising hydrogen and carbon monoxide over a cobalt catalyst at a temperature in the range 210-225° C. to produce a first reaction product mixture comprising hydrocarbons, steam, carbon monoxide and hydrogen of a first reaction stage, (ii) condensing and separating water from the first reaction product mixture to produce a de-watered first reaction product mixture, (iii) passing the de-watered first reaction product mixture over a supported ruthenium catalyst at a temperature in the range 230-265° C. and a pressure in the range 35-55 bar abs, to produce a second reaction product mixture containing hydrocarbons of a second reaction stage, and (iv) recovering the hydrocarbons from the second reaction product mixture wherein the pressure of the second reaction stage is higher than that of the first reaction stage, and the pressure of the first reactor stage is at least 5 bar abs.