Stage catalyst concentric annular stripper

Details Stage catalyst concentric annular stripper Stage catalyst concentric annular stripper

1992-04-24

1993-11-09

Housel, James C.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

422140, 422141, 422144, B01J 826, F27B 1500

Patent

active

052600343

ABSTRACT:
A process and apparatus for rapid stripping of fluid cracking catalyst is disclosed. A series of concentric annular beds provide rapid initial removal of hydrocarbons from the interstices of the catalyst particles. Successive stages of stripping allow time for hydrocarbon diffusion from catalyst's pores while maintaining low hydrocarbon partial pressure. Residence times increase as the catalyst passes to the different catalyst beds.

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"New Fluid Bed Retort Exchanges Solids but not Gases," Synthetic Fuels Report, Jun. 1985, pp. 2-14 through 2-15.

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