PSA process using a faujasite zeolite containing metal cations as adsorbent
US6261344A · kind A · utility
11Cited by
11References
20Claims
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Key dates
| Filing date | Aug 23, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Aug 23, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S95/902
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A PSA or VSA process for separating a gas flow, such as air, containing at least one first gas compound, such as nitrogen, which is preferentially adsorbed on at least one adsorbent, and at least one second gas compound, such as oxygen, which is adsorbed less preferentially on at least the one adsorbent than the first gas compound. The adsorbent used comprises particles of faujasite zeolite having a Si/Al ratio <1.5, such as a LSX zeolite, and containing 80 to 99% Li.sup.+ cations, 0.01 to 25% Na.sup.+ cations, 0.01% to 10% Mg.sup.2 cations, 0.01% to 10% Ca.sup.2+ cations and 0 to 3% K.sup.+ cations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.