Desulfurization of hot gas with cerium oxide

Details Desulfurization of hot gas with cerium oxide Desulfurization of hot gas with cerium oxide

1981-03-16

1982-08-24

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423244, 423263, 423539, B01D 5334

Patent

active

043460631

ABSTRACT:
A gas containing oxygen, H.sub.2 S and sulfur oxides is desulfurized by contacting same with cerium oxide at a temperature of from about 350.degree.-600.degree. C. This invention is particularly useful for desulfurizing tail gas from a Claus plant. In a preferred embodiment the cerium oxide is supported on alumina and oxygen is present in the gas in an amount more than that stoichiometrically required to convert the H.sub.2 S and SO.sub.2 to cerium oxysulfate.

REFERENCES:
patent: 3974256 (1976-08-01), Wheelock et al.
patent: 4001375 (1977-01-01), Longo
patent: 4002720 (1977-01-01), Wheelock et al.
patent: 4251496 (1981-02-01), Longo et al.

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