Patent ID: 9399739
Filing Date: 2016-07-26
CPC Classification: C07C,C10G,Y02P

Claim Text:
1. A process for producing a distillate boiling range transportation fuel stream from a syngas feedstream derived from a biomass, which syngas feedstream is comprised of hydrogen and carbon monoxide, up to about 40 mol. % of other moieties including water and greater than 5 volume percent carbon dioxide, and has a hydrogen to carbon monoxide ratio of greater than 1.5 to 2, which process comprising: a) conducting said syngas feedstream to a first carbon dioxide removal zone wherein carbon dioxide is removed to result in a carbon dioxide lean syngas stream having less than 5 volume percent carbon dioxide; b) conducting said carbon dioxide lean syngas stream to a Fischer Tropsch reaction zone wherein said carbon dioxide lean syngas stream is reacted in the presence of a Fischer-Tropsch catalyst and under Fisher-Tropsch conditions to result in a Fischer-Tropsch product stream; c) conducting said Fischer-Tropsch product stream to a first separation zone resulting in an aqueous-containing stream, a gaseous stream containing unreacted syngas, and a first Fisher-Tropsch product hydrocarbon-containing stream; d) conducting said Fischer-Tropsch hydrocarbon-containing product stream to a hydroconversion zone wherein said Fischer-Tropsch hydrocarbon-containing product stream is reacted in the presence of hydrogen and a hydroconversion catalyst and under hydroconversion reaction conditions to result in a hydroconversion gaseous stream and a distillate boiling range stream; e) collecting said distillate boiling range stream; f) conducting said gaseous stream from step d) above and the stream containing any remaining unreacted syngas from step c above to a second separation zone resulting in an aqueous-containing stream, a hydrocarbon stream comprised of hydrocarbons having 5 or more carbon atoms, and a tail-gas stream; g) collecting said hydrocarbon stream comprised of hydrocarbons having 5 or more carbon atoms; h) conducting said tail-gas stream to a reforming zone wherein said tail-gas stream is reformed in the presence of hydrogen and a reforming catalyst at reforming conditions to result in a reformer syngas stream having a hydrogen to carbon monoxide ratio equal to or greater than that of said syngas feedstream having a carbon dioxide level greater than 5 volume percent; i) conducting at least a portion of said syngas stream from said reforming zone to a second carbon dioxide removal zone wherein carbon dioxide is removed to result in a carbon dioxide lean tail-gas stream having less than 5 volume percent carbon dioxide; j) conducting at least a portion of said tail-gas stream to said FischerTropsch reaction zone.