Installation for the fluidized-bed catalytic cracking of a hydro

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Fluidized bed

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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.

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