FCC arrangement with externally suspended catalyst separation zo

Details FCC arrangement with externally suspended catalyst separation zo FCC arrangement with externally suspended catalyst separation zo

1994-12-28

1997-01-14

McMahon, Timothy

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

422143, B01J 808

Patent

active

055936431

ABSTRACT:
This FCC process suspends a layer of catalyst in a riser outside an FCC reactor vessel at a location above a primary riser outlet. The density at the riser outlets is higher than the flowing density in the riser. The suspended catalyst provides a disengagement zone that enhances the separation of catalyst from product vapors. The riser operates in a manner that prevents any discharge of catalyst from its end. The arrangement also provides a convenient method for venting stripping vapors into a closed reactor cyclone system.

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