PROCESS FOR THE REMOVAL OF SULFUR COMPOUNDS FROM GAS STREAMS

摘要

A method of reducing sulfur compounds from an incoming gas stream, comprising: i. flowing the gas stream over a hydrolysis catalyst to convert COS and CS2 to H2S and reduce SO2 to elemental sulfur to form an effluent stream; providing an acidic gas removal unit comprising an absorbent ; iii. flowing said effluent stream over said absorbent to produce a stream free of acidic gases; iv. applying an acidic-gas desorption mode to said acidic-gas rich absorbent to produce an acidic gas stream; v. introducing oxygen to said acidic gas-rich stream; vi. providing a direct oxidation vessel containing catalyst suitable for catalyzing the oxidation of the H2S to sulfur wherein the temperature of the vessel is at or above the sulfur dew point at the reaction pressure, and flowing said acidic gas-rich stream over said catalyst to produce a processed stream having a reduced level of sulfur compounds.