Back to results
US 12,644,055 B2Granted
Carbon dioxide enhanced hydrothermal liquefaction
AssigneeBattelle Memorial Institute
InventorsAlan H. Zacher, Lisa A. Middleton-Smith, Todd R. Hart, Andrew J. Schmidt, Michael R. Thorson, Samuel P. Fox, Dylan J. Cronin
Life of this patent
Estimating the term…
Abstract
A process where a liquid or supercritical CO2 co-solvent is used in a hydrothermal liquefaction (HTL) process. The process improves yield of the HTL process.
Claims18
A method of producing liquid biocrude comprising:
- providing an aqueous biomass slurry comprising biomass and water;
- adding liquid CO2 or supercritical CO2 to the slurry to form a slurry with CO2 cosolvent;
- heating and pressurizing the slurry;
- reacting the slurry in a HTL process in the presence of the CO2 cosolvent under conditions where the CO2 cosolvent is in the form of a liquid or is supercritical;
- forming a product mixture from the step of reacting;
- cooling the product mixture to form a cooled product mixture;
- subjecting the cooled product mixture to a separation process;
- and
- recovering a liquid product from the separation process.
6 more elements
Dependencies are inferred from the claim text.