Maintaining the separation efficiency of immobilized liquid membranes in gas separation methods and apparatus
US4174374A · kind A · utility
25Cited by
9References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 16, 1978 |
| Grant date | Nov 13, 1979 |
| Priority date | — |
| Expiry date | Aug 16, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D61/38
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed are an improved method and apparatus employing at least one immobilized liquid membrane separated from a liquid sweep by a gas-permeable barrier for removing a gaseous component from a gaseous mixture. The improvements include use of one or more liquid-filled passages extending through the gas-permeable barrier to effect diffusive transfer of active carrier species from the liquid sweep into the membrane, thereby maintaining the separation efficiency of each membrane. In a preferred embodiment, the improvements are applied to removal of hydrogen sulfide from mixtures thereof with carbon dioxide as found in gasified coal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.