Chemistry of inorganic compounds – Sulfur or compound thereof – Elemental sulfur
Patent
1977-10-31
1979-02-06
Peters, G. O.
Chemistry of inorganic compounds
Sulfur or compound thereof
Elemental sulfur
423576, C01B 1704
Patent
active
041384733
ABSTRACT:
A process for recovering sulfur from sour gas, and providing valuable byproducts, the sour gas consisting principally of hydrogen sulfide and carbon dioxide, and the process consisting of the steps of combusting a portion of the hydrogen sulfide with pure oxygen to produce a mixture of H.sub.2 S and SO.sub.2, reacting the mixture successively over a series of catalytic converter beds wherein they react to produce water and elemental sulfur, the elemental sulfur being condensed after each converter, and the gaseous output of each converter being repressurized and reheated before entering the next successive converter to improve the yield of sulfur therein, combusting the gaseous output of the final converter of the series with pure oxygen in a final catalytic converter to convert any remaining H.sub.2 S to SO.sub.2, and treating the H.sub.2 O, SO.sub.2 and CO.sub.2 mixture emerging from said converter to remove therefrom the water and CO.sub.2, which are in themselves valuable byproducts and recycling the SO.sub.2 to the beginning step of the process, both to permit further recovery of the its sulfur content, and also to reduce the oxygen requirement in the first step of the process.
REFERENCES:
patent: 2415904 (1947-02-01), Odell
patent: 3532468 (1970-10-01), Beavon
patent: 3681204 (1972-08-01), Hujsak et al.
patent: 3822341 (1974-07-01), Smith
patent: 3895101 (1975-07-01), Tsuruta
Hamilton John A.
Peters G. O.
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