Patent ID: 8450543

Claim:
An integrated process for preparing renewable hydrocarbons, comprising: (a) providing renewable isobutanol and renewable ethanol; (b) dehydrating the renewable isobutanol, thereby forming a renewable butene mixture comprising one or more renewable linear butenes and renewable isobutene; (c) dehydrating the renewable ethanol, thereby forming renewable ethylene; (d) reacting at least a portion of the renewable butene mixture and at least a portion of the renewable ethylene to form one or more renewable C 3 -C 16 olefins; (e) forming renewable hydrogen by one or more of: (e1) isolating and dehydrogenating at least a portion of the linear butenes formed in step (b) and/or one or more renewable C 4 -C 16 olefins formed in step (d) thereby forming one or more renewable C 4 -C 16 dienes and renewable hydrogen; (e2) isolating and dehydrocyclizing at least a portion of one or more renewable C 6 -C 16 olefins formed in step (d), thereby forming one or more renewable C 6 -C 16 aromatics and renewable hydrogen; (e3) isolating and dehydrocyclizing at least a portion of one or more renewable C 6 -C 16 dienes formed in step (e1) to form one or more renewable C 6 -C 16 aromatics and renewable hydrogen; and (f) hydrogenating at least a portion of the renewable C 3 -C 16 olefins with the renewable hydrogen formed in step (e), thereby forming a renewable saturated hydrocarbon fuel or fuel additive, wherein the amount of said dehydrogenating and/or dehydrocyclizing in step (e), and/or the amount of hydrogenating in step (f) are controlled so that the amount of renewable hydrogen formed in step (e) is essentially completely consumed in step (f).