Patent ID: 6277352
Filing Date: 2001-08-21
Classification: B01D,C01B

Abstract:
A method for processing a gas containing at least hydrogen sulfide (H.sub.2 S) and at least sulfur dioxide (SO.sub.2), comprising:contacting said gas with a liquid solvent containing at least one catalyst in a contacting stage;recovering gaseous effluent substantially containing no hydrogen sulfide and no sulfur dioxide, and a mixture containing liquid sulfur, liquid solvent and solid by-products resulting from degradation of the catalyst;separating the liquid sulfur from the liquid solvent in a decantation zone;extracting a liquid fraction F containing at least the solid by-products from a layer between the liquid solvent and the liquid sulfur in the decantation zone;sending said liquid fraction F to a processing stage distinct from the contacting stage; andrecovering at least a stream F. comprising most of the solid by-products and a stream F.sub.2 mostly comprising solvent nearly free of the solid by-products from the processing stage.