Chemistry of inorganic compounds – Sulfur or compound thereof – Elemental sulfur
Patent
1978-01-04
1979-05-22
Peters, G. O.
Chemistry of inorganic compounds
Sulfur or compound thereof
Elemental sulfur
48272, 423567R, C01B 1702, C10K 120
Patent
active
041559908
ABSTRACT:
Hydrogen sulfide is removed from coal gas for gas turbine power generation and recovered as elemental sulfur by contacting a coal gas formed by gasification of coal with an iron oxide catalyst, thereby removing hydrogen sulfide from the coal gas and obtaining a desulfurized coal gas; regenerating the iron oxide catalyst of lowered desulfurization activity, thereby obtaining a regeneration off-gas containing sulfur dioxide; converting a portion of said desulfurized coal gas to reducing gas containing hydrogen; reacting the hydrogen of the resulting reducing gas with the sulfur dioxide in a portion of said regeneration off-gas, thereby producing hydrogen sulfide; reacting the resulting hydrogen sulfide with the sulfur dioxide in the remaining portion of the regeneration off-gas in the presence of a catalyst, thereby producing a gas containing elemental sulfur, and recovering the elemental sulfur from the gas.
REFERENCES:
patent: 2747968 (1956-05-01), Pigache
patent: 3061421 (1962-10-01), Landau et al.
patent: 3867110 (1975-02-01), Schora
patent: 3969089 (1976-07-01), Moss et al.
patent: 4035474 (1977-07-01), Kunkel et al.
Kimura Shoichi
Takahashi Toshihiko
Beall, Jr. Thomas E.
Hitachi , Ltd.
Peters G. O.
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