Process for treating two gas streams
Abstract
Abstract A FIRST GAS STREAM CONTAINING H2S AND A SECOND GAS STREAM CONTAINING SO2 ARE SIMULTANEOUSLY TREATED IN ORDER TO REMOVE SO2 AND H2S FROM THE RESPECTIVE STREAMS AND TO PRODUCE ELEMENTAL SULFUR BY THE STEPS OF: (A) SCRUBBING THE FIRST GAS STREAM WITH AN AQUEOUS SCRUBBING SOLUTION TO PRODUCE AN EFFLUENT STREAM CONTAINING A WATER-SOLUBLE SULFIDE COMPOUND; (B) CONTACTING THE SECOND GAS STREAM WITH AN AQUEOUS SCRUBBING SOLUTION AND WITH A REDUCNG AGENT AT REACTION CONDITIONS SELECTED TO RESULT IN AN EFFLUENT STREAM CONTAINING A WATER-SOLUBLE THIOSULFATE COMPOUND; (C) SUBJECTING A MIXTURE OF THE EFFLUENT STREAMS FROM STEP (A) AND (B) TO REDUCTION CONDITIONS SELECTED TO RESULT IN AN EFFLUENT STREAM CONTAINING A POLYSULFIDE COMPOUND; (D) DECOMPOSING THE RESULTING POLYSULFIDE COMPOUND TO FORM ELEMENTAL SULFUR, HYDROGEN SULFIDE, AND A REGENERATED SCRUBBING SOLUTION; (E) PASSING THE RESULTING HYDROGEN SULFIDE TO STEP (A); AND (F) RECIRCULATING THE REGENERATED SCRUBBING SOLUTION TO STEPS (A) AND (B).
Inventors
- 👤 Peter Urban
Bibliographic Details
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