Three-stage counter-current FCC regenerator

Details Three-stage counter-current FCC regenerator Three-stage counter-current FCC regenerator

2011-03-29

2011-03-29

Lorengo, Jerry (Department: 1731)

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

C502S040000, C502S041000, C502S043000, C502S047000, C502S052000, C208S155000, C208S156000, C208S164000

Reexamination Certificate

active

07915191

ABSTRACT:
This invention is directed to a method and apparatus for regenerating a catalyst used in an FCC unit, including providing a spent catalyst into an upper portion of a regenerator, maintaining a calcination phase, a gasification phase, and a combustion phase of fluidized catalyst in the regenerator, combusting carbon in the combustion phase and producing a combustion flue gas, reacting carbon in the gasification phase with the combustion flue gas to form a carbon monoxide rich flue gas, and calcining the spent catalyst with the carbon monoxide rich flue gas.

REFERENCES:
patent: 5013425 (1991-05-01), Cetinkaya
patent: 2009/0264279 (2009-10-01), Hedrick

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