Pressure driven solid electrolyte membrane gas separation...

Details Pressure driven solid electrolyte membrane gas separation... Pressure driven solid electrolyte membrane gas separation...

B - Operations, Transporting

01

D

B01D 61/42 (2006.01) B01D 53/22 (2006.01) B01D 53/32 (2006.01) B01D 71/02 (2006.01)

Patent

CA 2172301

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 Oxygen-depleted retentate is withdrawn as a product stream.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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