Upflow catalytic reaction apparatus with anti- fluidization...

Details Upflow catalytic reaction apparatus with anti- fluidization... Upflow catalytic reaction apparatus with anti- fluidization...

B - Operations, Transporting

01

J

23/426

B01J 15/00 (2006.01) B01J 8/02 (2006.01) B01J 8/06 (2006.01) C01B 3/38 (2006.01)

Patent

CA 1107039

UPFLOW CATALYTIC REACTION APPARATUS WITH ANTI-FLUIDIZATION MEANS ABSTRACT OF THE DISCLOSURE An anti-fluidization device, such as for preventing fluidization of a vertically extending catalyst bed having upward gas flow therethrough, includes a perforated plate which rests on top of the bed by its own weight and moves upwardly and downwardly as the bed expands and contracts while remaining in continuous contact with the top surface of the bed. A restraint is positioned above the plate to limit the expansion of the bed to a preselected volume. As long as the plate remains in contact with the top layer of particles and as long as the bed is not permitted to expand more than a small amount, fluidization does not occur.

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