Gas separation using C3+ hydrocarbon-resistant membranes
US6361582B1 · kind B1 · utility
100Cited by
43References
47Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 2000 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | May 19, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D71/643
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for separating a gas from a gas mixture containing the gas and a C3+ hydrocarbon vapor, using gas-separation membranes selective for the gas over the C3+ hydrocarbon vapor. The membranes use a selective layer made from a polymer having repeating units of a fluorinated polymer, and demonstrate good resistance to plasticization by the organic components in the gas mixture under treatment, and good recovery after exposure to liquid aromatic hydrocarbons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.