Catalytic cracking

Patent · Tue Jul 29 00:00:00 EDT 1980

OSTI ID:7090393

Dight, L; Kennedy, J

In a process for continuous cyclic fluid catalytic cracking of hydrocarbons with a zeolitic cracking catalyst in the absence of added hydrogen in a reaction zone to produce lower boiling hydrocarbons wherein cracking results in the deposition on the fluid cracking catalyst particles of a solid deposit of combustible hydrocarbons, the catalyst particles containing said deposit are regenerated in a regeneration zone by oxidation in the presence of air at elevated temperature to burn off said deposit, and the catalyst is recycled to said reaction zone where it is used to crack hydrocarbons in the absence of added hydrogen, the improvement which comprises cycling said particles of cracking catalyst through said reduction and regeneration zones in physical admixture with a minor amount relative to the quantity of said particles of cracking catalyst of fluidizable particles consisting essentially of calcined spray dried microspheres of kaolin clay impregnated with a minor amount of a platinum compound, said platinum compound being present in amount sufficient to promote the oxidation of carbon monoxide to carbon dioxide in a said regeneration zone, said impregnated microspheres having a low surface area as measured by the B.E.T. Nitrogen absorption method.

• Assignee: Engelhard Minerals and Chemicals Corp
• Patent Number(s): US 4214978
• OSTI ID: 7090393
• Resource Relation: Patent File Date: Filed date 29 May 1979
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
CATALYTIC CRACKING
CATALYSTS
PLATINUM COMPOUNDS
CATALYTIC EFFECTS
ZEOLITES
ABSORPTIVITY
ALUMINIUM SILICATES
BOILING POINTS
CARBON DIOXIDE
CARBON MONOXIDE
COMBUSTION
DEPOSITION
HYDROGEN
KAOLIN
MICROSPHERES
NITROGEN
RECYCLING
SURFACE AREA
ALUMINIUM COMPOUNDS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CLAYS
CRACKING
DECOMPOSITION
ELEMENTS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
NONMETALS
OPTICAL PROPERTIES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PYROLYSIS
SILICATES
SILICON COMPOUNDS
SURFACE PROPERTIES
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
020400* - Petroleum- Processing
020900 - Petroleum- Environmental Aspects