Process for producing oxygen-enriched gas
US3930814A · kind A · utility
67Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1974 |
| Grant date | Jan 6, 1976 |
| Priority date | — |
| Expiry date | Nov 27, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2313/18
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Membrane permeation processes to produce oxygen-enriched gas from atmospheric air are improved by feeding the air to membrane cells divided into two groups, independently withdrawing the permeate output from the two groups of cells into two conduits containing restrictions, and referencing the pressure of one output against the other. A subsequent imbalance of pressure between the two permeate outputs indicates a membrane leakage in one of the two groups of cells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.