Process for removing sulfur oxides from a gas

Patent · Tue Sep 20 04:00:00 EDT 1983

OSTI ID:5479482

Bertolacini, R J; Hirschberg, E H; Modica, F S

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/sup 0/ to about 900/sup 0/ 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.

• Assignee: Standard Oil Co. (Indiana)
• Patent Number(s): US 4405443
• OSTI ID: 5479482
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800 -- Coal
Lignite
& Peat-- Waste Management
02 PETROLEUM
020800 -- Petroleum-- Waste Management
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
500300* -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ABSORPTION
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CERIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
DESULFURIZATION
DYSPROSIUM COMPOUNDS
ELEMENTS
FLUIDIZED BED REACTORS
FLUIDS
FUEL DISPERSION REACTORS
GASEOUS WASTES
GASES
HOMOGENEOUS REACTORS
LANTHANUM COMPOUNDS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
METALS
OXIDES
OXYGEN COMPOUNDS
PRASEODYMIUM COMPOUNDS
RARE EARTH COMPOUNDS
REACTORS
REMOVAL
SAMARIUM COMPOUNDS
SORPTIVE PROPERTIES
SULFUR COMPOUNDS
SULFUR OXIDES
SURFACE PROPERTIES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
WASTES
YTTRIUM
YTTRIUM COMPOUNDS
ZINC COMPOUNDS
ZINC OXIDES