Fluid catalytic cracking

Patent · Tue Aug 17 00:00:00 EDT 1982

OSTI ID:6984772

Bartley, B H; Petty, R H

Gaseous sulfur compounds are removed from a sulfur-containing gas mixture by reacting sulfur oxides in the gas mixture with alumina in association with bismuth. The process is particularly useful in fluid catalytic cracking of sulfur-containing petroleum charge stocks wherein sulfur is contained in coke deposited on the fluidized cracking catalyst. By the process of this invention, sulfur oxides may be removed from regenerator off-gases from a fluidized catalytic cracking unit by incorporating particulate alumina impregnated with bismuth in particulate cracking catalyst whereby sulfur oxides generated in the regeneration of the catalyst are reacted with bismuth-impregnated alumina. Sulfur oxides produced during regeneration of the catalyst by burning the coke with air are captured and converted to hydrogen sulfide in the cracking reactor. The hydrogen sulfide so produced is readily separated from petroleum products of the catalytic cracking reaction process.

• Assignee: Texaco Inc
• Patent Number(s): US 4344926
• OSTI ID: 6984772
• Resource Relation: Patent File Date: Filed date 22 Aug 1980; Other Information: PAT-APPL-180357
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
PETROLEUM
CATALYTIC CRACKING
DESULFURIZATION
ALUMINIUM OXIDES
BISMUTH
FLUIDIZATION
GASEOUS WASTES
HYDROCARBONS
HYDROGEN SULFIDES
PARTICULATES
ALUMINIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
METALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PYROLYSIS
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
WASTES
020400* - Petroleum- Processing