Prevention of membrane degradation
US4881953A · kind A · utility
88Cited by
16References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Sep 15, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/402
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In the separation of gases in a membrane system, degradation of membrane permeability is prevented by passing the feed gas mixture through a bed of adsorbent material, preferably activated carbon, to adsorb the heavier hydrocarbon contaminants responsible for degradation without removal of lighter hydrocarbons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.