Method for removing hydrogen sulfide

Details Method for removing hydrogen sulfide Method for removing hydrogen sulfide

C - Chemistry, Metallurgy

25

B

204/80

C25B 1/22 (2006.01) B01D 53/52 (2006.01) C01F 11/46 (2006.01)

Patent

CA 1069463

ABSTRACT OF THE DISCLOSURE A method for removing hydrogen sulfide from a hydrogen sulfide entrained gas comprises the steps of bringing the hydrogen sulfide entrained gas into contact with an alkaline absorption solution with a pH of 10 to 14 to cause hydrogen sulfide in the gas to be absorbed into an alkaline absorption solution, subjecting the resultant absorption solution to a DC electrolytic treatment whereby an alkaline solution is separated into a cathode chamber and sulfur and sulfuric acid are separated into an anode chamber, and circulating as the alkaline absorption solution the alkaline solution produced within the cathode chamber. This constitutes a closed system, thereby completely eliminating a cause for public nuisance.

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