Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1982-03-29
1983-09-20
Gantz, Delbert E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208120, 423244, 252455Z, C10G 1102
Patent
active
044054432
ABSTRACT:
Sulfur oxides are removed from a gas by an absorbent comprising at least one inorganic oxide selected from the group consisting of the oxides of aluminum, magnesium, zinc, titanium, and calcium in association with yttrium or yttrium combined with at least one free or combined rare earth metal selected from the group consisting of lanthanum, cerium, praseodymium, samarium, and dysprosium, wherein the ratio by weight of inorganic oxide or oxides to yttrium or yttrium combined with a rare earth metal or metals is from about 0.1 to about 30,000. Absorbed sulfur oxides are recovered as a sulfur-containing gas 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 thereof.
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CRC-Handbook of Chemistry and Physics, 45th Edition, 1964, p. B 145.
Bertolacini Ralph J.
Hirschberg Eugene H.
Modica Frank S.
Brown Scott H.
Gantz Delbert E.
Magidson William H.
McClain William T.
Prezlock Cynthia A.
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