Downflow FCC reaction arrangement with upflow regeneration

Details Downflow FCC reaction arrangement with upflow regeneration Downflow FCC reaction arrangement with upflow regeneration

1995-06-06

1996-12-31

Bhat, Nina

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

422145, 422146, 422214, 422219, 208113, 208120, 208164, F27B 1502

Patent

active

055891390

ABSTRACT:
An FCC arrangement uses two stages upflow conduit combustion and a regenerator cyclone separator to supply catalyst particles from a dip leg directly into a downflow reaction conduit. The downflow reaction conduit provides an immediate stage of initial catalyst and gas separation at its outlet end. The arrangement and method offers an improved method of operating an FCC reactor and regeneration zone without the use of large reactor or regeneration vessels. One form of the invention also uses enlarged dip pipe conduits to provide discrete zones of catalyst stripping thereby eliminating all relatively large pressure vessels from FCC method and arrangement of this invention.

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