Patent ID: 7432310
Filing Date: 2008-10-07
Classification: C07C,C10G

Abstract:
1. A process for synthesizing hydrocarbons, which process includes feeding a gaseous feedstock comprising hydrogen and carbon monoxide, into a first Fischer-Tropsch reaction stage which is a three-phase low temperature catalytic Fischer-Tropsch reaction stage operating at a temperature less than 280° C. and a pressure in the range 10 to 50 bar; allowing the hydrogen and carbon monoxide partially to react catalytically in the first reaction stage to form hydrocarbons; feeding at least a portion of a tail gas which includes unreacted hydrogen and carbon monoxide obtained from the first reaction stage, into a second Fischer-Tropsch reaction stage which is a two-phase high temperature catalytic Fischer-Tropsch reaction stage operating at a temperature of at least 320° C. and a pressure in the range 10 to 50 bar; and allowing the hydrogen and carbon monoxide at least partially to react catalytically in the second reaction stage to form gaseous hydrocarbons.