Removal of gases from a feed

Details Removal of gases from a feed Removal of gases from a feed

2006-02-14

2006-02-14

Johnson, Edward M. (Department: 1754)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

C423S220000, C423S237000, C423S245200

Reexamination Certificate

active

06998098

ABSTRACT:
A process is presented for separating and removing acid gases or base gases from a feed gas by use of a gas permeable membrane and a permeate comprising a treatment solution. The treatment solution in the permeate is caustic or acidic and reacts with the base or acid gases respectively to form salts so as to facilitate their removal from the feed gas. The acid gas in an acid feed gas may include HCN, H2S, CO2, COS and/or NOx. The base gas in a base feed gas may include NH3. In another aspect of the present invention, an apparatus for treating a feed gas containing an acid or a base gas comprises a feed gas passage; a treatment solution container containing a treatment solution; and a gas permeable membrane.

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