Method and apparatus for recovering a solvent
US6710216B1 · kind B1 · utility
2Cited by
9References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2000 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Jan 28, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11B9/025
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a closed-loop biomass extraction apparatus (10), strategies for purifying HFC solvents used therein include:(i) contacting an adsorbent and a desiccant, e.g. in a container (26) with contaminated HFC solvent branched from the main flow loop; and, optionally,(ii) washing contaminated HFC solvent with water, e.g. in a vessel (34) to separate a co-solvent or entrainer, such as ethanol, thereform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.