Chemistry of inorganic compounds – Sulfur or compound thereof – Elemental sulfur
Patent
1976-06-28
1981-01-06
Peters, G. O.
Chemistry of inorganic compounds
Sulfur or compound thereof
Elemental sulfur
C01B 1704
Patent
active
042436478
ABSTRACT:
A process for the removal of H.sub.2 S from a feed gas, and the production of sulfur therefrom, is effected by oxidation with oxygen and/or SO.sub.2 at temperatures between 250.degree. and 450.degree. F. The oxidation is conducted in the presence of an extremely stable oxidation catalyst comprising an oxide and/or sulfide of vanadium supported on a non-alkaline porous refractory oxide. Sulfur deposition and consequent catalyst deactivation are prevented by maintaining the partial pressure of free sulfur in the oxidation reactor below that necessary for condensation. H.sub.2, CO, and light hydrocarbons present in the feed gas are not oxidized. Typical uses of the process include the removal of H.sub.2 S and the production of sulfur from sour natural gases or gases obtained from the gasification of coal.
Feed gases which contain SO.sub.2 and H.sub.2 S in mole ratios greater than 0.5, or which contain other gaseous sulfur compounds such as COS, CS.sub.2, SO.sub.3 and mercaptans, can be desulfurized by hydrogenating all of such sulfur components to H.sub.2 S and subsequently removing the H.sub.2 S from the hydrogenated feed gas by the oxidation process of the invention. This hydrogenation-oxidation combination is especially contemplated for the desulfurization of Claus tail gases and stack gas effluents.
REFERENCES:
patent: 349981 (1886-09-01), Claus
patent: 1695285 (1928-12-01), Jaeger et al.
patent: 2083894 (1937-06-01), Connolly
patent: 2083895 (1937-06-01), Connolly
patent: 2697064 (1954-12-01), Brown
patent: 2889207 (1959-06-01), Eliot
patent: 2958586 (1960-11-01), Barber
patent: 3438721 (1969-04-01), Innes
patent: 3798315 (1974-03-01), Nicklin
patent: 3848071 (1974-11-01), Groenendaal
Norton Co., "Bulletin Z50", Norton Process Products Div., Akron, Ohio, 1970.
Hansford Rowland C.
Hass Robert H.
Peters G. O.
Sandford Dean
Union Oil Company of California
Wirzbicki Gregory F.
LandOfFree
Process for removal of hydrogen sulfide from gas streams does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for removal of hydrogen sulfide from gas streams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for removal of hydrogen sulfide from gas streams will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-284930