Patent ID: 6872753

Claim:
A process for producing hydrocarbons, comprising: (a) producing a synthesis gas stream in a syngas production process where inlet materials to the syngas production process are substantially free of carbon dioxide, and wherein the synthesis gas comprises primarily hydrogen and carbon monoxide; (b) forming a reactant-stream for a hydrocarbon synthesis process comprising at least a portion of the synthesis gas from step (a), wherein the ratio of hydrogen to carbon monoxide in the reactant-stream is not preferred for synthesis to hydrocarbons such that one component is a lean component; (c) providing from a feedstock which is substantially free of carbon dioxide a second stream which is rich in the lean component of the hydrocarbon synthesis process reactant-stream of step (b); (d) adding an amount of said second stream to the reactant-stream to form an adjusted reactant-stream which has a hydrogen to carbon monoxide ratio more desirable for hydrocarbon synthesis; (e) catalytically converting the adjusted reactant-stream from step (d) in a synthesis reaction to produce hydrocarbons.