External fluid catalytic cracking unit regenerator plenum...

Details External fluid catalytic cracking unit regenerator plenum... External fluid catalytic cracking unit regenerator plenum...

C - Chemistry, Metallurgy

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C10G 11/14 (2006.01) B01D 45/12 (2006.01) B01J 8/28 (2006.01) C10G 11/18 (2006.01)

Patent

CA 1057223

EXTERNAL FLUID CATALYTIC CRACKING UNIT REGENERATOR PLENUM MANIFOLD Abstract of the Disclosure In a fluid catalytic cracking unit which incorpor- ates a reactor where a finely divided particulate catalyst is intimately contacted with a feed stock to undergo a specified reaction and the reaction creates at least some coke or other residual carbonaceous coating on the catalyst, an improvement in a regenerator which incorporates an external plenum on the exterior of the regenerator apparatus for receiving and collecting the flue gases separated from regenerated catalyst by a plurality of cyclone separators or other separating apparatus is disclosed. The external plenum communicates by means of stand pipes through the wall of the regenerator. This supports the cyclone separators or other separating means mechanically and avoids certain thermal stresses which would otherwise occur in the plenum if it were placed on the interior of the regeneration chamber.

225511

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