Process for the conversion of a solid lignocellulosic material
US11578046B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2019 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Jul 24, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E50/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process includes the following steps: a) converting a solid material containing hemicellulose, cellulose and lignin, by: (i) hydrolyzing at least part of the hemicellulose of the solid material with a first aqueous hydrochloric acid solution, yielding a remaining solid material and a hydrochloric acid-containing, aqueous, first hydrolysate product solution; (ii) hydrolyzing at least part of the cellulose of the remaining solid material with a second aqueous hydrochloric acid solution, yielding a residue and a hydrochloric acid-containing, aqueous, second hydrolysate product solution; (b) forwarding to step (c) a, hydrochloric acid-containing, aqueous intermediate product solution comprising: a part of or the whole of the hydrochloric acid-containing, aqueous first and/or second hydrolysate product solution of step (a); and (c) heating at least part of the hydrochloric acid-containing, aqueous intermediate product solution to yield a product solution containing 5-(chloromethyl)furfural, and extracting the 5-(chloromethyl)furfural from the product solution into an extraction solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.