Chemistry of inorganic compounds – Sulfur or compound thereof – Elemental sulfur
Patent
1979-04-27
1981-07-21
Thomas, Earl C.
Chemistry of inorganic compounds
Sulfur or compound thereof
Elemental sulfur
423576, C01B 1704
Patent
active
042798825
ABSTRACT:
Sulfur is produced by contacting, in a catalytic selective oxidation zone, a feed gas comprising an acid gas stream containing from about 1 to 100 percent by volume in admixture with about 70 to 130 percent of the stoichiometric amount of oxygen required for conversion of hydrogen sulfide to sulfur and a recycle gas which is a portion of the gas resulting from condensing sulfur from the effluent of the catalytic selective oxidation zone, with a catalyst selectively capable of oxidizing hydrogen sulfide to sulfur dioxide substantially without formation of sulfur trioxide to form a gas stream comprising hydrogen sulfide, sulfur dioxide and sulfur at a temperature between the kindling temperature of the catalyst and about 850.degree. F. Formed sulfur is condensed from the effluent gas stream and a portion of the substantially sulfur-free effluent returned as recycle gas.
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Ralph M. Parsons Company
Thomas Earl C.
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