Method for removing pollutants from catalyst regenerator flue gas

Patent · Tue Sep 19 04:00:00 EDT 1978

OSTI ID:6780204

Flanders, R L; Blanton, Jr, W A

Carbon monoxide and sulfur oxides are removed from flue gas produced in a catalyst regenerator in an FCC system and sulfur from the flue gas is shifted to form hydrogen sulfide. The hydrogen sulfide is recovered in the gases removed from the cracking reactor in the system by introducing sufficient molecular oxygen into the catalyst regenerator to provide an atmosphere therein having a molecular oxygen concentration of at least 0.1 volume percent, reacting carbon monoxide in the regenerator flue gas with oxygen in contact with a particulate carbon monoxide combustion promoter physically admixed with the cracking catalyst, reacting sulfur oxides in the regenerator flue gas with silica-free alumina included as a discrete phase in the FCC catalyst to form a sulfur-containing solid in the catalyst, and forming hydrogen sulfide in the cracking reactor by contacting the sulfur-containing solid with the hydrocarbon feed.

• Assignee: Chevron Research Co.
• Patent Number(s): US 4115250
• OSTI ID: 6780204
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020800 -- Petroleum-- Waste Management
42 ENGINEERING
424000* -- Engineering-- Pollution Control Equipment-- (1980-1989)
AIR POLLUTION CONTROL
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYTIC CRACKING
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
CRYOGENIC FLUIDS
DECARBONIZATION
DECOMPOSITION
DESIGN
DESULFURIZATION
ELEMENTS
EQUIPMENT
FLUE GAS
FLUIDS
GASEOUS WASTES
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INDUSTRIAL PLANTS
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PETROLEUM REFINERIES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
PYROLYSIS
REMOVAL
SULFIDES
SULFUR COMPOUNDS
SULFUR OXIDES
THERMOCHEMICAL PROCESSES
WASTES