Catalytic cracking catalyst
An improved fluid catalytic cracking process comprises a method for the regeneration of the fluidizable hydrocarbon conversion catalyst, particularly of the molecular sieve type, which has been deactivated with coke deposits while employed in a hydrocarbon catalytic cracking process. The coke containing hydrocarbon conversion catalyst is contacted with an oxygen-containing gas to burn the coke from the catalyst under conditions providing substantially complete combustion of carbon monoxide and substantially complete combustion of the coke on the catalyst. In the regenerator, particles of the hydrocarbon conversion catalyst are in association with particles of a platinum group metal or rhenium oxidation catalyst which promotes the combustion of carbon monoxide to carbon dioxide. The catalyst composite contains a mixture of cracking catalyst particles and particles having the platinum group metal or rhenium oxidation catalyst supported on a substrate. Evolved heat is recovered by direct heat transfer to the catalyst, for example within a dilute or dense phase zone in the regenerator vessel. The gaseous effluent from the regenerator has a low content of carbon monoxide and may be discharged directly to the atmosphere with little discernible effect upon ambient air quality. The regenerated hydrocarbon conversion catalyst may have less than about 0.05 weight percent coke thereon.
- Assignee:
- Standard Oil Co (Indiana)
- Patent Number(s):
- US 4341660
- OSTI ID:
- 6984731
- Country of Publication:
- United States
- Language:
- English
Similar Records
Catalytic cracking using a mixture of cracking catalyst particles with particles of platinum group metal or rhenium on inert substrates regenerated to up to about 0. 1% coke
Catalytic cracking with reduced emission of noxious gases
Related Subjects
020400* -- Petroleum-- Processing
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ADSORBENTS
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CATALYSTS
CATALYTIC CRACKING
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
COKE
CRACKING
DEACTIVATION
DECOMPOSITION
ELEMENTS
ENERGY TRANSFER
FLUIDIZATION
HEAT TRANSFER
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
METALS
MINERALS
MOLECULAR SIEVES
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
POROSITY
PROMOTERS
PYROLYSIS
REGENERATION
RHENIUM
SILICATES
SILICON COMPOUNDS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
ZEOLITES