Gas separation
US5490871A · kind A · utility
18Cited by
11References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1994 |
| Grant date | Feb 13, 1996 |
| Priority date | — |
| Expiry date | Jan 28, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/40009
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
During a purge step of a PSA plant the waste gas being vented is analyzed to identify when a preselected volume of the waste gas contains purge gas after which the purge step is stopped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.