Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1989-02-17
1990-04-03
Spitzer, Robert
Gas separation
Means within gas stream for conducting concentrate to collector
55 58, 55 62, 55 68, 55 73, 55 74, 55 75, B01D 5304
Patent
active
049137093
ABSTRACT:
An improved pressure swing adsorption process is disclosed for the recovery of high-purity primary and secondary components from a multicomponent gas mixture. The process utilizes a first group of absorbent beds selective for the secondary component and a second group of adsorbent beds selective for retention of tertiary impurities in the mixture. The gas mixture is passed through a first and second bed in series, very high purity primary component product is discharged from the second bed, and high purity secondary component product is recovered by desorption from the first bed. A low-pressure purge of the first bed with high-purity secondary component product is utilized to minimize compression power and improve purity of the secondary product component. Several novel pressure equalization steps improve primary product recovery and reduce power consumption. Further increased product recovery is realized by recycling depressurization and purge streams from the first bed. The process can be used to recover high-purity hydrogen and carbon dioxide from a gas mixture containing these components along with minor amounts of methane, carbon monoxide, and nitrogen.
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Fernbacher John M.
Marsh William F.
Simmons James C.
Spitzer Robert
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