Process for removing sulphur compounds from a residual gas

Details Process for removing sulphur compounds from a residual gas Process for removing sulphur compounds from a residual gas

1991-03-25

1993-02-09

Breneman, R. Bruce

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

422171, 422172, 422173, 422190, C01B 1704

Patent

active

051851407

ABSTRACT:
Process for removing sulphur-containing compounds from a residual gas with recovery of said compounds in the form of sulphur, wherein the residual gas is subjected to a treatment comprising a hydrogenation and a hydrolysis phase to provide the sulphur-containing compounds in the unique form of H.sub.2 S, a cooling step with water condensation, a catalytic oxidation of H.sub.2 S in CLAUS stoechiometry and a catalytic CLAUS reaction phase with deposition of sulphur on the CLAUS catalyst and periodic regeneration of the sulphur-laden catalyst and cooling of the regenerated catalyst. The gas used for the regeneration and for the cooling is tapped from the gas effluent supplied to the catalytic oxidation and the gas issued from the regeneration is reintroduced at least in part into said gas effluent after separation of the sulphur containing therein. Application to the purification of residual gases issued from CLAUS sulphur units.

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