Methods and systems for processing lignin during hydrothermal digestion of cellulosic biomass solids
US9284242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2013 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Oct 30, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Digestion of cellulosic biomass solids may be complicated by release of lignin therefrom. Methods for digesting cellulosic biomass solids may comprise: providing cellulosic biomass solids in a digestion solvent; at least partially converting the cellulosic biomass solids into a phenolics liquid phase comprising lignin, an aqueous phase comprising an alcoholic component derived from the cellulosic biomass solids, and an optional light organics phase; combining at least the phenolics liquid phase and the aqueous phase with one another, thereby forming a combined phase; and separating at least a portion of the alcoholic component from at least a portion of the combined phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.