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US 8,546,627 B2Granted
Renewable compositions
AssigneeGevo, Inc.
InventorsPatrick R. Gruber, Matthew W. Peters, Josefa M. Griffith, Yassin Al Obaidi, Leo E. Manzer, Joshua D. Taylor, David E. Henton
Life of this patent
Estimating the term…
Abstract
The present invention is directed to renewable compositions derived from fermentation of biomass, and integrated methods of preparing such compositions.
Claims21
A process for preparing a renewable jet fuel comprising:
- (a) treating biomass to form a feedstock;
- (b) fermenting the feedstock with one or more species of microorganism, thereby forming one or more C2-C6 alcohols;
- (c) dehydrating at least a portion of the one or more C2-C6 alcohols obtained in step (b), thereby forming a product comprising one or more C2-C6 olefins;
- (d) isolating the one or more C2-C6 olefins;
- (e) oligomerizing at least a portion of the one or more C2-C6 olefins isolated in step
- (d), thereby forming a product comprising one or more C6-C24 unsaturated oligomers;
- (f) optionally hydrogenating at least a portion of the product of step (e) in the presence of hydrogen, thereby forming a product comprising one or more C6-C24 saturated alkanes;
- and
- (g) combining the product of step (f) with one or more C10-C14 aromatic hydrocarbons, thereby forming a jet fuel;
- whereby the product of step (g) meets the requirements of ASTM D1655.
7 more elements
A process for preparing a renewable aromatic compound, comprising:
- (i) treating biomass to form a feedstock;
- (ii) fermenting the feedstock with one or more species of microorganism, thereby forming one or more C2-C6 alcohols;
- (iii) dehydrating at least a portion of the one or more C2-C6 alcohols obtained in step (ii), thereby forming a product comprising one or more C2-C6 olefins;
- (iv) isolating the one or more C2-C6 olefins;
- (v) optionally oligomerizing the one or more C2-C6 olefins to one or more dimers and/or one or more trimers of the C2-C6 olefins;
- (vi) aromatizing one or more C2-C6 olefins from step (iv) or one or more dimers and/or one or more trimers of the C2-C6 olefins of step (v), thereby forming a product comprising C6-C14 aromatic hydrocarbons, and hydrogen;
- and
- (vii) optionally oligomerizing the product of step (vi) in the presence of the one or more C2-C6 olefins of step (v) to form a product comprising one or more C8-C16 aromatic hydrocarbons.
5 more elements
A renewable jet fuel or jet fuel precursor comprising a mixture of aromatic hydrocarbons and C11-C14 aliphatic hydrocarbons.
Dependencies are inferred from the claim text.