Treatment of gas streams

Details Treatment of gas streams Treatment of gas streams

C - Chemistry, Metallurgy

01

B

23/332, 23/385

C01B 17/04 (2006.01) B01D 53/34 (2006.01)

Patent

CA 1337318

An acid gas stream comprising hydrogen sulphide is passed through a train of at least three stages 50, 60 and 70 of a process in which in each stage a portion of the hydrogen sulphide is burned using oxygen to support combustion, resulting sulphur dioxide reacts at a temperature greater than 800°C with residual hydrogen sulphide and the resulting sulphur vapour is condensed out of the gas mixture. Typically, more than 90 mole% of the hydrogen sulphide is thus converted catalytically thus reducing or eliminating the need for downstream catalytic stages.

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