Process for the production of sulphur with increased energy reco

Details Process for the production of sulphur with increased energy reco Process for the production of sulphur with increased energy reco

1981-11-12

1984-03-13

Thomas, Earl C.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423247, 423248, C01B 1704

Patent

active

044367163

ABSTRACT:
Improved process for the production of sulphur from a gas containing H.sub.2 S, SO.sub.2, H.sub.2 and/or CO, in which the gas is caused to pass through a CLAUS catalyst in a primary catalytic stage operating at between 200.degree. and 460.degree. C. in order to form sulphur, and thereafter the sulphur contained in the reaction mixture issuing from this stage is condensed through indirect heat exchange with water to produce steam.
The improved process consists in constituting at least the final eighth of the catalyst volume in this stage by a composite mass formed from a refractory oxide on which is fixed a transition metal compound, for example Co and/or Mo, and in entering into contact the gas with this composite mass at between 300.degree. and 460.degree. C. in order to oxidize H.sub.2 and CO.
The energy resulting from this oxidation is recovered in the form of a supplementary quantity of steam during the sulphur condensation.

REFERENCES:
patent: 3845197 (1974-10-01), Renault et al.
patent: 4138473 (1979-02-01), Gieck

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