Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Gas or vapor treating
Reexamination Certificate
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
Lorengo Jerry
Paschall James C
Smith Jennifer A
UOP LLC
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