Removal of hydrogen sulfide from fluid streams

U.S. Patent Number: 5338778

Abstract: H.sub.2 S is removed from a fluid stream by contacting the stream with an aqueous solution having at least two components: an effective amount of an iron (III) chelate to oxidize H.sub.2 S to sulfur and, an amount of a water soluble anionic polymer containing sulfonic acid groups, carboxyl groups or mixtures thereof which is effective to stabilize the chelate. During the removal process the iron chelate is reduced to iron(II) chelate, and sulfur particles are produced.

Inventors: Bedell; Stephen A. (Lake Jackson, TX), Myers; John D. (Clute, TX)

Assignee: The Dow Chemical Company (Midland, MI)

Application Number: 07/592,402

Issued: 1994-08-16

Expired: 2006-08-16

Classes: 423/220 ; 423/226; 423/230; 423/243.07; 423/573.1

Field of search: 423/220,226,228,229,230,231,573.1,243.07

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