Fluid catalytic cracking process and apparatus for more effectiv

Details Fluid catalytic cracking process and apparatus for more effectiv Fluid catalytic cracking process and apparatus for more effectiv

1986-09-03

1989-03-21

Caldarola, Glenn

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Solids contacting and mixing

208113, 208156, 208164, 208120, 422142, 422146, G01J 826, C10G 1104

Patent

active

048140686

ABSTRACT:
A multistage process and apparatus for regenerating fluid catalytic cracking catalyst is disclosed. Each stage preferably has a successively higher temperature, and flue gas is removed after each stage. The process may regenerate a single phase catalyst or, preferably, a dual phase catalyst system, wherein an intermediate pore zeolite catalyst contained within a less elutriatable catalyst particle and a larger pore zeolite catalyst contained within a more elutriatable catalyst particle, thereby separating the intermediate pore zeolite catalysts from the larger pore zeolite catalysts prior to a final regeneration step.

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