Patent ID: 6596781
Filing Date: 2003-07-22
Classification: C07C,C10G,Y02P

Abstract:
An integrated process for making upgraded Fischer-Tropsch products and a carbonylation product comprising one or more of acetic acid, methyl acetate, and acetic anhydride from synthesis gas comprising the steps of:(a) separating the synthesis gas into a first portion and a second portion; (b) reacting the hydrogen and carbon monoxide from the first synthetic gas portion in a reaction zone in the presence of a catalyst under conditions preselected to form methanol; (c) recovering an intermediate product mixture comprising methanol, hydrogen and carbon monoxide from the reaction zone of step (b), wherein said intermediate reaction mixture contains at least 25% by volume of hydrogen; (d) contacting the intermediate product mixture recovered in step (c) in a carbonylation reaction zone under vapor phase conditions with a carbonylation catalyst containing one or more of a active metal selected from the group consisting of rhodium, iridium, osmium, and cobalt on an inert support and a halide promoter under carbonylation conditions to produce a carbonylation product is formed comprising one or more of acetic acid, methyl acetate, and acetic anhydride; (e) recovering separately hydrogen and the carbonylation product from the carbonylation reaction zone of step (d); (f) contacting the second synthetic gas portion of step (a) with a Fischer-Tropsch catalyst in a Fischer-Tropsch reaction zone under conditions preselected to produce Fischer-Tropsch products; (g) feeding the hydrogen recovered from step (e) into a hydroprocessing zone for upgrading Fischer-Tropsch products; (h) upgrading the Fischer-Tropsch products of step (f) in the hydroprocessing zone of step (g); and (i) recovering an upgraded Fischer-Tropsch product.