Catalytic cracking with reduced emission of noxious gas

Patent · Tue Mar 06 00:00:00 EST 1984

OSTI ID:6802530

Vasalos, I A

Emissions of sulfur oxides from the regenerator of a catalytic cracking unit are reduced by selectively removing a portion of the sulfur from sulfur-containing coke deposits on deactivated cracking catalyst. This is accomplished by reaction of these deposits with limited amounts of molecular oxygen in a stripping zone at a temperature in the range from about 550/sup 0/ to about 700/sup 0/ C. Hot regenerated catalyst and/or hot effluent gas from the catalyst regeneration zone is passed to the stripping zone in an amount which is effective to maintain the temperature in said stripping zone within the range from about 550/sup 0/ to about 700/sup 0/ C.

• Assignee: Standard Oil Co.
• Patent Number(s): US 4435281
• OSTI ID: 6802530
• Resource Relation: Patent File Date: Filed date 15 Sep 1980; Other Information: PAT-APPL-187613
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
CATALYSTS
FOULING
REGENERATION
CATALYTIC CRACKING
AIR POLLUTION ABATEMENT
GASEOUS WASTES
HEAT RECOVERY
DESULFURIZATION
COKE
DEACTIVATION
FLUIDIZED BED
ORGANIC SULFUR COMPOUNDS
OXIDATION
OXYGEN
PETROLEUM PRODUCTS
REGENERATORS
REMOVAL
SULFUR OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ELEMENTS
ENERGY RECOVERY
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
PYROLYSIS
RECOVERY
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
WASTES
020800* - Petroleum- Waste Management
020400 - Petroleum- Processing