SULFUR PRODUCTION USING OXYGEN AND RECYCLE IN COMBINATION WITH SCRUBBING TOWER

摘要

A gaseous feed stream comprising hydrogen sulphide is admixed with concentrated oxygen in a burner 2, where the hydrogen sulfide is partially converted to vaporous sulfur. The effluent from the burner is passed through a boiler 5, in which the temperature of the reaction mixture is reduced and steam co-generated. The effluent from the boiler is subsequently passed to a sulfur condensor 8, for recovering liquid sulfur, and then to a water condensor 10. The uncondensed gas is recycled to the burner 2. A portion of this gas is withdrawn from the recycle loop 11, pressurized by a compressor 14, and routed to a scrubbing tower 13, where the residual sulfur compounds are further reacted and the gas cleaned. Condensate from the water condenser 10 is also pumped into the scrubbing tower 13.