Removal of corrosive contaminants from alkanolamine absorbent process

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United States of America Patent

PATENT NO 6334886
SERIAL NO

09569732

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A process is provided for removing CO.sub.2 and/or H.sub.2 S from a gas mixture containing as impurities CO.sub.2 and/or H.sub.2 S and at least one other impurity selected from the group consisting of a cyanide and ammonia. The process includes contacting at least a portion of the reflux stream from the overhead vapor from a stripping column of an acid gas removal solvent (i.e., alkanolamine) treatment plant with an anion exchange resin to remove corrosive impurities. The ion-exchanged reflux stream is then recycled to the top of the stripping column or into the bulk circulating acid gas removal solvent (i.e., alkanolamine) passing from the bottom of the stripping column.

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Patent Owner(s)

Patent OwnerAddress
AIR PRODUCTS AND CHEMICALS INC7201 HAMILTON BLVD PATENT DEPT ALLENTOWN PA 18195-1501

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Barnes, Jr David Richard Laurys Station, PA 3 48
Bixler, Arthur Daniel Slatington, PA 2 58

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