Apparatus and method involving supercritical fluid extraction
US4493797A · kind A · utility
27Cited by
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10Claims
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Key dates
| Filing date | Dec 22, 1983 |
| Grant date | Jan 15, 1985 |
| Priority date | — |
| Expiry date | Dec 22, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An autoclave extraction apparatus using supercritical fluid is used for supercritical fluid extraction of one or several compounds. The supercritical fluid containing the compound(s) may then be processed in a pressurized bed reactor under supercritical conditions. The bed being a fluidizable catalytic bed to carry out a catalytic reaction of the compound(s). The method is particularly applicable to recover valuable lignin and other extractable components from kraft black liquor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.