Electrolysis: processes – compositions used therein – and methods – Electrolytic material treatment – Gas – vapor – or critical fluid
Patent
1997-03-05
1998-03-31
Tung, T.
Electrolysis: processes, compositions used therein, and methods
Electrolytic material treatment
Gas, vapor, or critical fluid
95 45, 95 54, 96 4, 204421, 205770, B01D 5300
Patent
active
057334358
ABSTRACT:
A process for removing oxygen from a feed stream to obtain an oxygen-depleted product stream by applying the feed stream to at least one separator including a feed zone and a permeate zone separated by a solid electrolyte mixed conductor membrane, and driving a first portion of entrained oxygen in the feed stream from the feed zone to the permeate zone via the mixed conductor membrane by applying at least one of a purge stream and a negative pressure to the permeate zone to establish a lower partial pressure of oxygen in that zone. Oxygen-depleted retentate is withdrawn as a product stream. Preferably, at least one additional solid electrolyte ionic or mixed conductor membrane is also employed in feed series with the mixed conductor membrane.
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Gottzmann Christian Friedrich
Prasad Ravi
Denninger Douglas E.
Praxair Technology Inc.
Tung T.
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