Vacuum/pressure swing adsorption (VPSA) for production of an oxygen enriched gas
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United States of America Patent
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Feb 16, 1999
Grant Date -
N/A
app pub date -
Jan 15, 1997
filing date -
Jan 15, 1997
priority date (Note) -
Expired
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Abstract
This invention relates to a VPSA method for the production of a product that is enriched with a more preferred gas from a mixture of the more preferred gas and a less preferred gas and, preferably to a VPSA method for the production of an oxygen-enriched product from air, using an oxygen-preferential adsorbent under equilibrium conditions. In a preferred embodiment the process uses a desorption purge at a nearly constant pressure that is selected to produce a steady stream of oxygen having a purity from 30% to 60% at a pressure in the range of 60 kPa to 20 kPa.
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