Preparation of normally liquid hydrocarbons and a synthesis...

Details Preparation of normally liquid hydrocarbons and a synthesis... Preparation of normally liquid hydrocarbons and a synthesis...

C - Chemistry, Metallurgy

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48/27, 260/678.6

C07C 1/04 (2006.01) B01J 23/44 (2006.01) C01B 3/38 (2006.01) C01B 3/48 (2006.01) C01C 1/04 (2006.01) C07C 29/15 (2006.01) C07C 31/04 (2006.01)

Patent

CA 1217504

ABSTRACT OF THE DISCLOSURE A process for preparing a hydrogen and carbon monoxide con- taining synthesis gas for hydrocarbon synthesis includes auto- thermally reforming a natural gas (CH4) feed with oxygen, steam and recycled carbon dioxide and, optionally, recycled hydrocarbon by-products from the hydrocarbon synthesis step. The reforming is carried out in an autothermal reformer comprising a first monolithic catalyst zone utilizing a palladium and platinum containing catalyst followed by a second platinum group metal steam reforming zone. The product of the autothermal reformer comprises hydrogen, carbon oxides and water. Carbon dioxide and water are removed from the reformer effluent and recycled to the reformer. The resulting synthesis gas comprises hydrogen and carbon monoxide in a selected ratio for passage to,e.g., a Fischer-Tropsch synthesis process. Light and heavy hydrocarbon by-products of the Fischer-Tropsch process may be recycled to the autothermal reformer.

437919

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