Method for producing pure and highly concentrated carbon dioxide from a renewable lignocellulosic biomass feedstock
US11952282B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2019 |
| Grant date | Apr 9, 2024 |
| Priority date | — |
| Expiry date | Aug 9, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A low energy production method for producing pure and highly concentrated carbon dioxide from a renewable lignocellulosic biomass feedstock comprising the steps of i) extracting lignins and hemicelluloses by putting a solid lignocellulosic raw material in the presence of a mixture of at least water and formic acid, at atmospheric pressure under conditions of temperature between 80° C. and 110° C., ii) fractionating, the primary solid fraction and the primary liquid fraction obtained at the end of the extraction step i), iii) separating the lignins from the intermediate liquid fraction, iv) producing a synthetic gas by feeding a gasification equipment with at least part of said primary solid fraction and/or at least part of said residual liquid fraction, and v) producing carbon dioxide and water by introducing dioxygen, or dioxygen enriched air, or air in said gasification equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.