Back to results
US 9,873,836 B2Granted
Process for converting biomass to aromatic hydrocarbons
AssigneeVirent, Inc.
InventorsPaul Blommel, Andrew Held, Ralph Goodwin, Randy Cortright
Life of this patent
Estimating the term…
Abstract
The present invention provides methods, reactor systems, and catalysts for increasing the yield of aromatic hydrocarbons produced while converting biomass to hydrocarbons. The invention includes methods of using catalysts to increase the yield of benzene, toluene, and mixed xylenes in the hydrocarbon product.
Claims20
A method for producing aromatic hydrocarbons, the method comprising:
- (a) processing a raw feedstock to form an intermediate feedstock;
- (b) converting the intermediate feedstock to a feedstock stream comprising an alcohol, a carboxylic acid, or combinations thereof;
- (c) conditioning the feedstock stream to provide an oxygenate mixture having a total H:Ceff ratio of between 1.2 and 1.6;
- and
- (d) exposing the oxygenate mixture to a condensation catalyst comprising a member selected from the group consisting of aluminosilicates, silica-alumina phosphates, and aluminum phosphates to produce aromatic hydrocarbons, wherein greater than 40% of carbon in the intermediate feedstock is contained within the aromatic hydrocarbons.
2 more elements
A method for producing biomass-derived aromatic hydrocarbons, the method comprising:
- (a) processing biomass to form a biomass-derived feedstock;
- (b) converting the biomass-derived feedstock to a feedstock stream comprising an alcohol or carboxylic acid;
- (c) conditioning the feedstock stream to provide an oxygenate mixture having a total H:Ceff ratio of between 1.2 and 1.6;
- and
- (d) exposing the oxygenate mixture to a condensation catalyst comprising a member selected from the group consisting of aluminosilicates, silica-alumina phosphates, and aluminum phosphates at a condensation pressure and a condensation temperature to produce aromatic hydrocarbons, wherein greater than 40% of carbon in the feedstock stream is contained within the aromatic hydrocarbons.
2 more elements
Dependencies are inferred from the claim text.