Installation for the fluidized-bed catalytic cracking of a hydro

Details Installation for the fluidized-bed catalytic cracking of a hydro Installation for the fluidized-bed catalytic cracking of a hydro

1989-01-26

1991-10-01

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

34 57A, 208164, 406 14, 406 94, 422145, 422241, B01J 826, F27B 1506

Patent

active

050532030

ABSTRACT:
The invention relates to an installation for the fluidized-bed cracking of a hydrocarbon feedstock.
In accordance with the invention recycling of the regenerated catalyst particles to the intake of the reactor comprise, from upstream to downstream, a preferably substantially vertical pipe (1) for the discharge of the regenerated particles from the regenerator, and a substantially straight pipe (2) connected to the vertical pipe (1) and sloping downward therefrom to the base (3) of the reactor to which it is connected, the downward-sloping pipe (2) being connected to the vertical pipe (1) and to the base (3) of the reactor through inward-curved portions or elbows which impose neither a sharp change in direction on the course of the particles nor sudden changes in the diameter of the pipes.

REFERENCES:
patent: 2219011 (1940-10-01), Kidwell et al.
patent: 2420129 (1947-05-01), Flock et al.
patent: 2781234 (1957-02-01), Boisture et al.
patent: 2943994 (1960-07-01), McCain Jr.
patent: 3692667 (1972-09-01), McKinney et al.
patent: 3927479 (1975-12-01), Stephanoff
patent: 4331533 (1982-06-01), Dean et al.
patent: 4601814 (1986-07-01), Mauleon et al.
patent: 4675099 (1987-06-01), Skraba
patent: 4728348 (1988-03-01), Nelson et al.

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