Pressure swing adsorption apparatus
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United States of America Patent
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Feb 16, 1999
Grant Date -
N/A
app pub date -
Jun 16, 1997
filing date -
Jun 16, 1997
priority date (Note) -
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Abstract
A pressure swing adsorption apparatus to vary selectively the concentration of at least one constituent of a gaseous mixture by sending a gaseous mixture into an adsorber to generate a particular product gas while delivering to another adsorber both a predetermined portion of the product gas to purge the other adsorber of its adsorbed gas and a selected amount of the product gas, independent of the flow rate and in addition to the predetermined portion, to produce a desired relative concentration of the constituents of the product gas from a range of relative concentrations.
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