Process for the removal of h.sub.2s from a sour...

Details Process for the removal of h.sub.2s from a sour... Process for the removal of h.sub.2s from a sour...

B - Operations, Transporting

01

D

252/30, 23/346

B01D 53/34 (2006.01) B01D 53/14 (2006.01) C01B 17/05 (2006.01)

Patent

CA 1221673

K 7453 A B S T R A C T PROCESS FOR THE REMOVAL OF H2S FROM A SOUR H2S-CONTAINING GASEOUS STREAM Process for the removal of H2S from a sour H2S-containing gaseous stream comprising: (a) contacting the sour gaseous stream in a contacting zone with an aqueous reaction solution at a temperature below the melting point of sulphur, the solution comprising an oxidizing polyvalent metal chelate and both phosphate and thiosulphate ions or precursors thereof, and producing a purified gaseous stream and an aqueous solution containing crystalline sulphur and reduced polyvalent metal chelate; (b) removing crystalline sulphur from the aqueous solution and regenerating latter solution in a regenerating zone to produce a regenerated solution containing oxidizing poly- valent metal chelate; and (c) returning the regenerated solution to the contacting zone. EFRH04/MF

468769

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