Process for recovering elemental sulfur by selective oxidation o

Details Process for recovering elemental sulfur by selective oxidation o Process for recovering elemental sulfur by selective oxidation o

1995-08-29

1997-08-05

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423224, 423576, C01B 1702

Patent

active

056539533

ABSTRACT:
The present invention discloses a method of selectively oxidizing hydrogen sulfide to elemental sulfur, in which a H.sub.2 S-containing gas mixture contacts with an oxygen-containing gas at 50.degree.-500.degree. C. in the presence of a mixed-metal catalyst. The reaction product mixture contains substantially no sulfur dioxide. The mixed-metal catalyst contains vanadium atom and molybdenum atom or magnesium atom.

REFERENCES:
patent: 3725531 (1973-04-01), Pearson et al.
patent: 4427576 (1984-01-01), Dupin
patent: 4605546 (1986-08-01), Vorin
J.A. Lagas and J. Borsboom, "Selective-oxidation catalyst improves Claus process", Oil and Gas Journal, 86(41), pp. 68-71, (Oct. 10, 1988).
P.F.M.T. van Nisselrooy and J.A. Lagas, "SuperClaus reduces SO.sub.2 emission by the use of a new selective oxidation catalyst", Catalysis Today, 16, pp. 263-271, 1993.

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