Method for removing hydrogen sulfide from gas streams

Details Method for removing hydrogen sulfide from gas streams Method for removing hydrogen sulfide from gas streams

B - Operations, Transporting

01

D

23/344

B01D 53/34 (2006.01) B01D 53/52 (2006.01) C01B 17/05 (2006.01) C10K 1/12 (2006.01)

Patent

CA 1212818

"METHOD FOR REMOVING HYDROGEN SULFIDE FROM GAS STREAMS" Abstract For the simultaneous absorption and oxidation of hydrogen sulfide, gaseous mixtures are treated with an aqueous, alkaline scrubbing agent containing pentavalent vanadium as the oxidizing medium. The hydrogen sulfide is absorbed by the scrubbing agent and oxidized to elemental sulfur with reduction of pentavalent vanadium to tetravalent vanadiu. The thus-reduced scrubbing agent is then regenerated in the presence of a promoter by reoxidation of the tetravalent vanadium, and reused, the novelty of the process being the use of a source of an organic nitrogen compound, e.g., hexamethylenediamine, an inorganic amine, or a carbohydrate, e.g., sucrose, as the promoter.

438786

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