Gas separation using organic-vapor-resistant membranes and PSA
US6592650B2 · kind B2 · utility
23Cited by
54References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2002 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Mar 25, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D71/64
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for separating a gas from a gas mixture containing an organic compound gas or vapor by a hybrid separation combining adsorption with membrane gas separation, using membranes selective for the gas over the organic compound. The membranes use a selective layer made from a polymer having repeating units of a fluorinated cyclic structure of an at least 5-member ring, and demonstrate good resistance to plasticization by the organic components in the gas mixture under treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.