Process for removing sulfur oxides from a gas

Details Process for removing sulfur oxides from a gas Process for removing sulfur oxides from a gas

1981-07-31

1983-01-18

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208113, 208122, 252411S, 252417, 423244, C10G 1105, C10G 1118

Patent

active

043691080

ABSTRACT:
Sulfur oxides are removed from a gas by an absorbent which comprises alumina in association with free or combined lanthanum, wherein the ratio by weight of alumina to lanthanum is from about 0.1 to about 30,000. Absorbed sulfur oxides are recovered as a sulfur-containing gas comprising hydrogen sulfide by contacting the spent absorbent with a hydrocarbon in the presence of a hydrocarbon cracking catalyst at a temperature from about 375.degree. to about 900.degree. C. The absorbent can be circulated through a fluidized catalytic cracking process together with the hydrocarbon cracking catalyst to reduce sulfur oxide emissions from the regeneration zone.

REFERENCES:
patent: 4146463 (1979-03-01), Radford et al.
patent: 4206039 (1980-06-01), Vasalos
patent: 4252636 (1981-02-01), Mooi
Russell et al., "Alumina Properties" 1956 pp. 6-40.

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