C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/332
C01B 17/04 (2006.01)
Patent
CA 1290138
PROCESS FOR THE TREATMENT OF SULFUR CONTAINING GASES ABSTRACT Process of treating sulfur containing gas streams by the Claus reaction in which a recycle stream containing a reactive component is employed in a negative feedback mode to maintain the sulfur producing Claus reaction at approximately equilibrium conditions. The feedstream may contain hydrogen sulfide or sulfur dioxide in a minor amount in an inert gas background. In one embodiment the feedstream to the reaction zone contains a stoichiometrically excess amount of sulfur dioxide for the Claus reaction. Effluent from the reaction zone is passed to a hydrogenation zone where the sulfur dioxide is converted to hydrogen sulfide. Hydrogen sulfide is extracted from the hydrogenation zone effluent and recycled to the Claus reaction zone. In another embodiment the feedsteam may contain a stoichiometrically excess amount of hydrogen sulfide. Effluent from the reaction zone is treated to produce a hydrogen sulfide containing recycle stream which is then subject to at least partial oxidation to produce a converted stream containing sulfur dioxide. The converted stream is recycled to the reaction zone. The invention may be employed in the high pressure processing of hydrocarbon gases containing sulfur.
520467
Denk Lawrence T.
Lawrence James M.
Taggart George W.
Denk Lawrence T.
Gowling Lafleur Henderson Llp
Incorporated Ford Bacon & Davis
Lawrence James M.
Taggart George W.
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