Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1985-05-24
1987-02-24
Spitzer, Robert
Gas separation
Means within gas stream for conducting concentrate to collector
55 26, 55 62, 55 68, 55 70, B01D 5322, B01D 5304
Patent
active
046455167
ABSTRACT:
In the purification of gas streams by contact with a permeable membrane selective for the separation of desired components from impurities, harmful gas stream components are removed by means of a pressure swing adsorption system prior to passage of said gas streams to the permeable membrane. Where the harmful components nevertheless comprise valuable components of said gas streams, the purified portion of said gas stream, either the permeate or the non-permeate from said membrane, is used to supply purge gas to the pressure swing adsorption system for desorption and recovery of said harmful components together with said desired components purified upon contact with said membrane. Where said harmful components are not valuable components of said gas streams, the impurity portion of said gas stream, either permeate or non-permeate from said membrane, is used to supply purge gas to said pressure swing adsorption system for desorption and discard of said impurities and said harmful components from the gas purification operation.
REFERENCES:
patent: 3430418 (1969-03-01), Wagner
patent: 4172885 (1979-10-01), Perry
patent: 4180552 (1979-12-01), Graham et al.
patent: 4229188 (1980-10-01), Intille
patent: 4238204 (1980-12-01), Perry
patent: 4367135 (1983-01-01), Posey, Jr.
patent: 4398926 (1983-08-01), Doshi
Reinisch Morris N.
Spitzer Robert
Union Carbide Corporation
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