B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
252/30, 23/332
B01D 53/34 (2006.01) B01D 53/14 (2006.01) B01D 53/52 (2006.01) B01D 53/86 (2006.01) C01B 17/05 (2006.01)
Patent
CA 2003010
ABSTRACT An improved aqueous catalytic oxidation-reduc- tion composition for oxidizing hydrogen sulfide to produce elemental sulfur and a method of removing hydrogen sulfide from a gas stream whereby a gas stream containing hydrogen sulfide is brought into contact with an aqueous catalytic oxidizing reaction composition containing a water soluble polyvalent metal salt having metal in the highest valence state and at least one nonionic surfactant having an HLB of from about 8 to about 10, preferably about 8.5 to about 9, which is adapted to wet the elemental sulfur formed. The nonionic surfactant is present in the reaction sol- ution in an amount sufficient to substantially prevent formation of sulfur froth at the surface of the reaction solution and to cause the sulfur to precipitate as a gran- ular solid that can be recovered by filtration, by centri- fucation, or other similar means.
Stewart Robert C. Jr.
Amoco Corporation
Gowling Lafleur Henderson Llp
Stewart Robert C. Jr.
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