Method of producing oxygen by adsorption
US5246676A · kind A · utility
38Cited by
2References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1992 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Feb 11, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/4062
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In the process for the production of oxygen by adsorption, the following combination of steps are used: the number of adsorbers is at least three; the time of pumping y under sub-atmospheric pressure during step b) is higher than dephasing T/n, and at least equal to the time x of the production step; the phase of pumping of the column of adsorbent material is carried out by using on said adsorption column successively at least two systems of pumping wherein one is in operation from the start of the pumping operation, another one is adapted to operate until pumping is over.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.