US 12,460,139 B2
Solvent extraction system and process for hydrothermal liquefaction
David B. Spry, Prairieville, LA (US); Emily N. Diaz, Kennewick, WA (US); Uriah J. Kilgore, Kennewick, WA (US); and Michael R. Thorson, Richland, WA (US)
Assigned to Battelle Memorial Institute, Richland, WA (US)
Filed by Battelle Memorial Institute, Richland, WA (US)
Filed on Aug. 23, 2023, as Appl. No. 18/454,695.
Prior Publication US 2025/0066678 A1, Feb. 27, 2025
Int. Cl. C10G 21/28 (2006.01); C10G 33/04 (2006.01)
CPC C10G 21/28 (2013.01) [C10G 33/04 (2013.01); C10G 2300/1011 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4081 (2013.01); C10G 2300/44 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
in a heat exchanger, cooling a biocrude oil emulsion stream received from a biocrude oil emulsion source, the biocrude oil emulsion stream comprising an emulsion including a biocrude oil phase, an aqueous phase, and solids;
in a first mixing vessel, mixing the emulsion with a solvent to dissolve the biocrude oil phase and form a biocrude-solvent solution;
in a first separator assembly, separating the biocrude-solvent solution from the aqueous phase and the solids;
in a solvent recovery apparatus, recovering solvent from the biocrude-solvent solution;
in a second mixing vessel, mixing the recovered solvent with the aqueous phase and the solids received from the first separator assembly to dissolve biocrude oil remaining in the aqueous phase and the solids; and
providing the recovered solvent and dissolved biocrude oil to the first mixing vessel as the solvent.