Patent ID: 8373012

Claim:
A process for preparing renewable jet fuel blendstock comprising: (a) treating biomass to form a feedstock; (b) fermenting the feedstock with one or more species of microorganism, thereby forming isobutanol; (c) dehydrating at least a portion of the isobutanol obtained in step (b), thereby forming a dehydration product comprising isobutene; (d) oligomerizing at least a portion of the dehydration product, thereby forming a product comprising one or more C 8 , one or more C 12 , and one or more C 16 unsaturated oligomers; and (e) hydrogenating at least a portion of the product of step (d) in the presence of hydrogen, thereby forming a renewable jet fuel blendstock comprising one or more C 12 and one or more C 16 saturated alkanes; (f) adjusting the ratio of C 12 and C 16 saturated alkanes provided by step (e) to form a renewable jet fuel blendstock which meets or exceeds the requirements of ASTM D7566-10a for hydroprocessed synthesized paraffinic kerosene (SPK).