Patent ID: 6800261
Filing Date: 2004-10-05
Classification: B01D,C01B

Abstract:
Process for the selective catalytic reduction of sulphur dioxide content of a gas mixture comprising sulfur dioxide, sulfur vapor, and at least 10 vol. % of water, in which process the gas mixture is passed over a sulphur resistant hydrogenation catalyst in sulphidic form, at a space velocity of at least 2000 hâˆ’1, in the presence of a reducing component, in a molar ratio of reducing component to sulphur dioxide of more than 10 up to 100, at a temperature of 125Â° C. to 300Â° C., so as to produce a resulting gas mixture comprising less than 1.2 vol. % H2S, followed by passing the gas mixture, after the said reduction, through a dry oxidation bed for the oxidation of sulphur compounds to elemental sulphur.