Method of determining the purity of oxygen present in an oxygen-enriched gas produced from an oxygen delivery system
US7722698B2 · kind B2 · utility
17Cited by
125References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2008 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Nov 15, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/4541
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of determining the purity of oxygen present in an oxygen-enriched gas produced from an oxygen delivery system is disclosed. The oxygen delivery system includes at least one sieve bed having a nitrogen-adsorbing material disposed therein and configured to adsorb nitrogen from a feed gas introduced into the at least two sieve beds via a pressure-swing adsorption cycle. The method includes determining a quantity of nitrogen adsorbed by the nitrogen-adsorbing material by inferring an effective volume of the at least one sieve bed based on a pressure change of the at least one sieve bed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.