Apparatus and methods for removing solvent residues
US6676838B2 · kind B2 · utility
5Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2002 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Feb 27, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D11/028
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus (10′) for extracting biomass includes an extractor (11), evaporator (12), compressor (13) and condenser (14) connected in series by pipework (17) to define a closed loop extraction circuit. A transfer line (18) selectively supplies hot solvent vapor from the outlet side of the compressor (13) to the interior of the extractor (11), where the solvent vapor heats the biomass. This causes stripping of solvent from the biomass. The transfer line (18) includes control elements (19,20) for controlling the flow of solvent vapor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.