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System and process for efficient separation of biocrudes and water in a hydrothermal liquefaction system

Patent ·
OSTI ID:1281062
A system and process are described for clean separation of biocrudes and water by-products from hydrothermal liquefaction (HTL) product mixtures of organic and biomass-containing feedstocks at elevated temperatures and pressures. Inorganic compound solids are removed prior to separation of biocrude and water by-product fractions to minimize formation of emulsions that impede separation. Separation may be performed at higher temperatures that reduce heat loss and need to cool product mixtures to ambient. The present invention thus achieves separation efficiencies not achieved in conventional HTL processing.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830;
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Number(s):
9,404,063
Application Number:
14/534,010
OSTI ID:
1281062
Country of Publication:
United States
Language:
English

References (2)

Process development for hydrothermal liquefaction of algae feedstocks in a continuous-flow reactor journal October 2013
Thermochemical biofuel production in hydrothermal media: A review of sub- and supercritical water technologies journal January 2008