Compositions – Co – s – negative element – or acid – bindant containing – Alkali-metal or alkali-metal compound containing
Patent
1989-07-21
1991-06-25
Kyle, Deborah L.
Compositions
Co, s, negative element, or acid, bindant containing
Alkali-metal or alkali-metal compound containing
252191, 252189, 423226, 423227, 423228, 4235766, C01B 1720, C01B 1704
Patent
active
050265032
ABSTRACT:
An improved aqueous catalytic oxidation-reduction 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 solution 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 granular solid that can be recovered by filtration, by centrifucation, or other similar means.
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Schick, M. J., Surfactant Science Series, vol. 1, Nonionic Surfactants, 1967, p. 1.
Amoco Corporation
Fee Valerie
Hook Fred E.
Kyle Deborah L.
Lyles Marcy M.
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