Process and apparatus for cooling during regeneration of fluid cracking catalyst

Patent · Tue Oct 06 00:00:00 EDT 1987

OSTI ID:5852175

Walters, P W; Raiche, H A; Harness, R L; Quodala, G M

This patent describes an apparatus for the regeneration of coke contaminated fluid cracking catalyst. The combination comprises: A. an elongated upflow regeneration vessel, containing a dense bed of catalyst and a regeneration gas grid located within the bed; B. a vertical heat exchanger mounted to the lower side of the vessel adapted to receive hot catalyst directly from the regeneration vessel and adapted to cool the hot catalyst as it passes downwardly through the exchanger; C. a Y junction positioned below the lower end of the heat exchanger; D. a first conduit means for passing cool catalyst downwardly to the Y junction; E. second conduit means for passing cool catalyst from the Y junction upwardly into the dense bed of catalyst in the regeneration vessel, and F. regeneration gas supply means, separate from the second conduit means, for supplying regeneration gas to the gas grid; G. lift gas supply means, separate from the regeneration gas supply means, for introducing lift gas into the second conduit means so as to lift the cool catalyst up through the second conduit means to the regenerator.

• Assignee: Ashland Oil, Inc., Ashland, KY
• Patent Number(s): US 4698212
• OSTI ID: 5852175
• Resource Relation: Patent File Date: Filed date 16 Dec 1985
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CATALYSTS
REGENERATION
CATALYTIC CRACKING
CHEMICAL REACTORS
COKE
CONTAINERS
COOLING
DUCTS
GAS FLOW
HEAT EXCHANGERS
JUNCTIONS
PACKED BED
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
FLUID FLOW
PYROLYSIS
THERMOCHEMICAL PROCESSES
400201* - Chemical & Physicochemical Properties