Brief description of the catalytic desulfurization of a gas containing the compounds h2s and so2 and optionally cos and / or cs2, with recovery of the compounds in the form of sulphur and a catalyst for implementing said method

摘要

A gas to be desulphurized is contacted with a catalyst containing a catalytic phase associated with a silicon carbide carrier in order to conduct a sulphur-forming reaction between H2S and SO2, and, optionally, a reaction that hydrolyses the COS and CS2 compounds into H2S, at temperatures which, in accordance with the selected implementation method, may be higher or lower than the dew point of the sulphur formed in the reaction gases. The invention is useful for recovering as sulphur H2S and SO2 compounds contained in gases from various sources, such as Claus process gases, and for hydrolysing to H2S the COS and CS2 compounds that the gases may contain.