Back to results
US 2013/0252292 A1Published application
Biomass extraction process
AssigneeLignol Innovations Ltd.
InventorsAlex BERLIN, Mikhail Y. BALAKSHIN
Life of this patent
Estimating the term…
Abstract
This present invention relates to an organosolv process for the extraction of materials from lignocellulosic biomass. This invention further relates to the chemicals and their derivatives extracted from biomass, uses, apparatus, methods, and the like. In an embodiment of the invention the material extracted from the lignocellulosic biomass is levulinic acid.
Claims22
1-27. (canceled)
A process of producing levulinic acid, said process comprising:
- a. placing a lignocellulosic biomass in an extraction vessel;
- b. mixing the lignocellulosic material with an organic solvent to form an extraction mixture;
- c. subjecting the mixture to an elevated temperature and pressure;
- d. maintaining the elevated temperature and pressure for a period of time;
- and
- e. recovering levulinic acid from the spent solvent;
- wherein the stoichiometric yield of levulinic acid is about 20% or greater.
4 more elements
An extraction process comprising:
- a. placing a lignocellulosic biomass in an extraction vessel;
- b. mixing the lignocellulosic material with an organic solvent to form an extraction mixture;
- c. subjecting the mixture to a temperature and pressure such that a slurry is formed, wherein the slurry has a viscosity of 1500 cps or less;
- d. maintaining the temperature and pressure for a period of time;
- e. recovering aromatic compounds from the spent solvent;
- wherein the yield of aromatic compounds is 35% or greater of loaded dry weight biomass.
3 more elements
An extraction process comprising:
- a. placing a lignocellulosic biomass in an extraction vessel;
- b. mixing the lignocellulosic material with an organic solvent to form an extraction mixture;
- c. subjecting the mixture to a temperature and pressure such that a slurry is formed, wherein the slurry has a viscosity of 1500 cps or less;
- d. maintaining the elevated temperature and pressure for a period of time;
- e. recovering process-derived aromatic compounds from the spent solvent;
- wherein the yield of aromatic compounds is at least about 90% of the theoretical maximum yield of lignin from the biomass.
3 more elements
Dependencies are inferred from the claim text.