Oxygen production process by pressure swing adsorption separation
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United States of America Patent
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-
Nov 16, 1999
Issued Date -
N/A
app pub date -
Apr 7, 1998
filing date -
Jun 2, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In order to provide a pressure-swing-adsorption oxygen production process which can maintain the product recovery at a high level while enhancing the oxygen productivity and reducing the unit power consumption, a pressure recovery step is carried out in which communication is provided between an outlet end of an adsorption column which has completed an adsorption step and an outlet end of an adsorption column which has completed a regeneration step, and in which gas remaining in the adsorption column which has completed the adsorption step is collected within the adsorption column which has completed the regeneration step; and simultaneously with the pressure recovery step, a gas mixture which has approximately the same composition as feed gas mixture is introduced into at least one of the adsorption column which has completed the adsorption step and the adsorption column which has completed the regeneration step through the inlet end thereof.
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