Global to push GA events into
skip to main content

Title: Liquefaction processes and systems and liquefaction process intermediate compositions

Liquefaction processes are provided that can include: providing a biomass slurry solution having a temperature of at least 300.degree. C. at a pressure of at least 2000 psig; cooling the solution to a temperature of less than 150.degree. 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 300.degree. C. and at least 2000 psig and in continuous fluid communication with a flash cooling/depressurization zone maintained below 150.degree. 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.
Inventors:
; ; ; ; ;
Issue Date:
OSTI Identifier:
1261631
Assignee:
Battelle Memorial Institute (Richland, WA) PNNL
Patent Number(s):
9,388,364
Application Number:
14/738,563
Contract Number:
AC05-76RL01830
Resource Relation:
Patent File Date: 2015 Jun 12
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 09 BIOMASS FUELS

Works referenced in this record:

Hydrothermal liquefaction of biomass: Developments from batch to continuous process
journal, February 2015

Numerical Simulation of CO2 Gas Microbubble of Foamy Oil
journal, January 2014

Thermochemical biofuel production in hydrothermal media: A review of sub- and supercritical water technologies
journal, January 2008
  • Peterson, Andrew A.; Vogel, Frédéric; Lachance, Russell P.
  • Energy & Environmental Science, Vol. 1, Issue 1, p. 32-65
  • DOI: 10.1039/B810100K

Hydrothermal liquefaction of biomass: A review of subcritical water technologies
journal, May 2011

Supercritical water gasification of an aqueous by-product from biomass hydrothermal liquefaction with novel Ru modified Ni catalysts
journal, September 2011
  • Zhang, Linghong; Champagne, Pascale; (Charles) Xu, Chunbao
  • Bioresource Technology, Vol. 102, Issue 17, p. 8279-8287
  • DOI: 10.1016/j.biortech.2011.06.051