Vented stripper section for a fluid catalytic cracking unit appa

Details Vented stripper section for a fluid catalytic cracking unit appa Vented stripper section for a fluid catalytic cracking unit appa

1987-12-22

1990-08-07

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

422145, 422147, 422310, F27B 1502, F27B 1509

Patent

active

049466569

ABSTRACT:
Disclosed is a process and apparatus for fluid catalytic cracking (FCC). Output of an FCC riser feeds a riser cyclone. A downstream end of the riser and the riser cyclone are located within a reactor vessel (disengaging vessel) having sidewalls. Cracked hydrocarbons in the output pass from the riser into a riser cyclone and discharge from the reactor vessel without being added to a reactor vessel atmosphere. A stripper cap divides the reactor vessel atmosphere into upper and lower portions. The stripper cap and a lower portion of the reactor vessel sidewalls define a stripping zone. A riser cyclone dipleg extends through an opening in the stripper cap into the stripping zone. A chimney vent conduit is provided for conducting stripped hydrocarbons out of the stripping zone without being added to the atmosphere of the reactor vessel above the stripper cap.

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