Process for recovering sulfur from fuel gases containing hydrogen sulfide, carbon dioxide, and carbonyl sulfide

摘要

Sour gas streams containing significant quantities of H.sub.2 S, CO. sub.2, and COS are contacted with an aqueous absorbent to remove the acid gases, the acid gases are described and contacted with a selective absorbent which rejects a substantial quantity of the CO.sub.2, and the H. sub.2 S enriched absorbent is stripped to produce a feed suitable for Claus units.