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Liquefaction processes and systems and liquefaction process intermediate compositions

United States Patent

July 12, 2016
View the Complete Patent at the US Patent & Trademark Office
Pacific Northwest National Laboratory - Visit the Technology Commercialization Program Website
Liquefaction processes are provided that can include: providing a biomass slurry solution having a temperature of at least C. at a pressure of at least 2000 psig; cooling the solution to a temperature of less than C.; and depressurizing the solution to release carbon dioxide from the solution and form at least part of a bio-oil foam. Liquefaction processes are also provided that can include: filtering the biomass slurry to remove particulates; and cooling and depressurizing the filtered solution to form the bio-oil foam. Liquefaction systems are provided that can include: a heated biomass slurry reaction zone maintained above C. and at least 2000 psig and in continuous fluid communication with a flash cooling/depressurization zone maintained below C. and between about 125 psig and about atmospheric pressure. Liquefaction systems are also provided that can include a foam/liquid separation system. Liquefaction process intermediate compositions are provided that can include a bio-oil foam phase separated from an aqueous biomass solids solution.
Schmidt; Andrew J. (Richland, WA), Hart; Todd R. (Kennewick, WA), Billing; Justin M. (Richland, WA), Maupin; Gary D. (Richland, WA), Hallen; Richard T. (Richland, WA), Anderson; Daniel B. (Pasco, WA)
Battelle Memorial Institute (Richland, WA)
14/ 738,563
June 12, 2015
STATEMENT REGARDING RIGHTS TO INVENTION MADE UNDER FEDERALLY-SPONSORED RESEARCH AND DEVELOPMENT This invention was made with Government support under Contract DE-ACO5-76RL01830 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.