Heavy oil catalytic cracking apparatus

Details Heavy oil catalytic cracking apparatus Heavy oil catalytic cracking apparatus

1990-01-12

1992-07-07

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

208113, 208 48R, 208 48Q, 422145, 422146, 422147, F27B 1512, F27B 1516, B01J 826

Patent

active

051281090

ABSTRACT:
A fluidized catalytic cracking process and apparatus operates with a two stage hot stripper between the reactor and catalyst regenerator. Addition of hot, regenerated catalyst to spent catalyst from the reactor heats the spent catalyst in the first stripping stage, which preferably uses steam stripping gas. The second stage of stripping occurs about a heat removal stab-in heat exchanger tube bundle, which removes heat from the catalyst during the second stage of stripping. Steam or flue gas may be used in the second stripping stage to fluidize catalyst, improve heat transfer and simultaneously strip the catalyst.

REFERENCES:
patent: 2584391 (1952-02-01), Leffer
patent: 4353812 (1982-10-01), Lomas et al.
patent: 4587010 (1986-05-01), Blaser et al.
patent: 4820404 (1989-04-01), Owen
patent: 4946656 (1990-08-01), Ross et al.
patent: 4961907 (1990-10-01), Herbst et al.
patent: 4990314 (1991-02-01), Herbst et al.
patent: 5000841 (1991-03-01), Owen

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