Patent ID: 8106102
Filing Date: 2012-01-31
Classification: B01J,C01B,C10G,C10K,Y02P

Abstract:
1. A process for the preparation and conversion of synthesis gas which includes in a feed gas reforming stage, reforming a feed gas which includes methane to produce synthesis gas which includes hydrogen and carbon monoxide; in a Fischer-Tropsch hydrocarbon synthesis stage, converting some of the hydrogen and carbon monoxide into a Fischer-Tropsch product; separating a tail gas which includes unreacted hydrogen and carbon monoxide, methane and carbon dioxide, from the Fischer-Tropsch product; in a tail gas treatment stage which includes methane reforming and water gas shift catalyst, and carbon dioxide sorbent, treating the tail gas by reforming the methane in the tail gas in the presence of steam to produce hydrogen and carbon dioxide, with at least some of the carbon dioxide being absorbed or adsorbed by the carbon dioxide sorbent to produce a hydrogen rich gas; and from time to time, desorbing the carbon dioxide from the carbon dioxide sorbent and feeding the carbon dioxide to the feed gas reforming stage in which the feed gas is reformed.