Improved configurations and methods for effluent gas treatment

Details Improved configurations and methods for effluent gas treatment Improved configurations and methods for effluent gas treatment

C - Chemistry, Metallurgy

01

B

C01B 17/16 (2006.01) C01B 31/20 (2006.01)

Patent

CA 2561455

Sulfur oxides are removed from an oxygen-containing acid gas in configurations and methods in which oxygen is catalytically removed using hydrogen sulfide, and in which the sulfur oxides react with the hydrogen sulfide to form elemental sulfur. A first portion of the remaining sulfurous compounds is reduced to form the hydrogen sulfide for oxygen removal, while a second portion of the sulfurous compounds is further converted to elemental sulfur using a Claus reaction or catalytic direct reduction reaction.

Des oxydes de soufre sont éliminés d'un gaz sulfureux contenant de l'oxygène dans des configurations et des procédés dans lesquels l'oxygène est éliminé par catalyse en utilisant du sulfure d'hydrogène et dans lesquels les oxydes de soufre réagissent avec le sulfure d'hydrogène pour former du soufre élémentaire. Une première partie des composés sulfureux restant est réduite pour former le sulfure d'hydrogène en vue de l'élimination de l'oxygène, alors qu'une seconde partie des composés sulfureux est en outre convertie en soufre élémentaire en utilisant une réaction de Claus ou une réaction de réduction catalytique directe.

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