Patent ID: 8703084

Claim:
A method for reducing an amount COS and/or CS 2 in a gas stream that also contains combustible hydrocarbons and H 2 S, comprising: a. providing in a reaction zone catalyst means comprising active sites suitable for hydrolysis of said COS and/or CS 2 to H 2 S via reaction with water or steam present in or injected in said gas stream and without hydrogenation to form H 2 S, said reaction zone or a further reaction zone comprising oxidation catalyst means for oxidation of H 2 S to SO 2 , wherein the temperature of said reaction zone or zones is at or above the elemental sulfur dew point at the reaction pressure; b. flowing said gas stream over said catalyst means and producing an effluent stream; c. ensuring that the molar ratio of molecular oxygen to H 2 S in the reaction zone is at least 0.5:1.0 and that at least quantities of H 2 S are oxidized to SO 2 ; and d. ensuring that said gas stream contains said water or steam at levels greater than 10 vol % (water equivalent) to allow hydrolysis of said amounts of COS and/or CS 2 to H 2 S.