Process for removing sulfur oxides from a gas

Patent · Tue Dec 27 04:00:00 EST 1983

OSTI ID:6863078

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

Sulfur oxides are removed from a gas by an absorbent which comprises a physical mixture of (1) a particulate cracking catalyst comprising from about 0.5 to about 50 weight percent of a crystalline aluminosilicate zeolite which is distributed throughout a porous matrix wherein said matrix comprises from about 70 to about 100 weight percent of alumina and (2) a particulate solid other than cracking catalyst which comprises at least one inorganic oxide selected from the group consisting of the oxides of aluminum and magnesium in association 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 rare earth metal or metals is from about 1.0 to about 1,000. Absorbed sulfur oxides are recovered as a sulfur-containing gas comprising hydrogen sulfide by contacting the spent absorbent with a hydrocarbon at a temperature from about 375/sup 0/ to about 900/sup 0/ C. The absorbent can be circulated through a catalytic cracking process to reduce sulfur oxide emissions from the regeneration zone.

• Assignee: Standard Oil Company (Indiana)
• Patent Number(s): US 4423019
• OSTI ID: 6863078
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020800* -- Petroleum-- Waste Management
42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
ABSORPTION
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ALUMINIUM SILICATES
CATALYSTS
CATALYTIC CRACKING
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DESULFURIZATION
ELEMENTS
GASEOUS WASTES
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
METALS
MINERALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
POROUS MATERIALS
PROCESSING
PYROLYSIS
RARE EARTHS
RECOVERY
REGENERATION
REMOVAL
SILICATES
SILICON COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
SULFUR OXIDES
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
ZEOLITES