Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1982-11-12
1985-10-29
Valentine, Donald R.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502330, 502346, 423230, 423573G, 252191, 252192, B01J 2104, B01J 2378, C01B 1704, B01D 5334
Patent
active
045500983
ABSTRACT:
Methods are disclosed for the purification of mixed gas streams containing hydrogen sulfide, carbon dioxide, carbon monoxide, sulfur, hydrogen, and methane and other hydrocarbon gases, and mixtures thereof, by the use of an oxidizing reactive solid. In one method, the oxidizing reactive solid is, in a first step, contacted with the mixed gas stream which may contain, among other gases, hydrogen sulfide and carbon dioxide. The reactive solid removes the hydrogen sulfide in the form of elemental sulfur with no detectable formation of sulfur oxide. The reactive solid also partially removes the carbon dioxide from the mixed gas stream. In the second step of the first method, the oxidizing reactive solid is regenerated by flowing air. In a second method of the present invention, mixed gas streams, containing hydrogen sulfide and oxygen in an approximate stoichiometric amount, are contacted with the solid, and hydrogen sulfide is converted directly to sulfur with minimal formation of compounds of sulfur. The oxidizing reactive solid has the general formula D-M-O, wherein D is chosen from the alkali metals or alkaline earth metals comprising sodium, potassium, lithium, calcium or magnesium; M represents a transition metal selected from the group comprising manganese, copper, and iron, and groups IB, VB, VIB, VIIB or VIII from the Periodic Table; and O designates oxygen.
REFERENCES:
patent: 1912877 (1933-06-01), Woodhouse
patent: 1922872 (1933-08-01), Thompson
patent: 1971168 (1934-08-01), Weiss
patent: 2200529 (1940-09-01), Baehr et al.
patent: 2273297 (1942-02-01), Szayna
patent: 2594149 (1952-04-01), Gamson
patent: 2747968 (1956-05-01), Pigache
patent: 2992884 (1961-07-01), Bienstock et al.
patent: 3199946 (1965-08-01), Fujita et al.
patent: 3374270 (1968-03-01), Hausen et al.
patent: 3579293 (1971-05-01), Shultz et al.
patent: 3914389 (1975-10-01), Haacke
patent: 4001371 (1977-01-01), Remeika et al.
patent: 4088736 (1978-05-01), Courty et al.
patent: 4164545 (1979-08-01), Scott
patent: 4171347 (1979-10-01), Hass
patent: 4233175 (1980-11-01), Delmon et al.
patent: 4252778 (1981-02-01), Yang et al.
patent: 4299719 (1981-11-01), Aoki et al.
patent: 4370161 (1983-01-01), Turkdogan
Gamson and Elkins, Sulfur from Hydrogen Sulfide, Chem. Eng. Prog., 49, 203-15 (1953).
Grekel, H.sub.2 S to S . . . by Direct Oxidation, Oil and Gas Journal, 57, 76-79 (1959).
Goar, Today's Gas-Treating Processes-2, Oil and Gas Journal, 84, 86 (1971).
Slack and James, Ammonia, Part II, p. 338 (1974).
Chowdhury and Datta, Recovery of Elementary Sulphur from Gases Containing Sulphuretted Hydrogen, Ind. Chem. Soc., 20, 253 (1943).
Herbstein, Ron and Weissman, The Thermal Decomposition of Potassium Permanganate and Related Substances, J. Chem. Soc. (A), 1821 (1971).
Thorne and Roberts, Inorganic Chemistry, Interscience Publishers, Inc., New York, (2949) (pp. 482-485) (1949).
Brendel and Klemm, Weitere Versuche zur Darstellung von Kaliumcobaltat(V), Zeitschrift fur anorganische und allgemeine Chemie, 320, 59 (1963).
Scholder and Protzer, Uber Alkalimanganate(III) bis(V), Zeitschrift fur anorganische und allgemeine Chemie, 369, 313 (1969).
Scholder, Schwochow and Schwarz, Uber Alkalichromate(V), Zeitschrift fur anorganische und allgemeine Chemie, 363, 10 (1968).
Cassett Larry R.
Rae David L.
The BOC Group Inc.
Valentine Donald R.
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