Gas circulation method for moving bed catalyst regeneration...

Details Gas circulation method for moving bed catalyst regeneration... Gas circulation method for moving bed catalyst regeneration...

C - Chemistry, Metallurgy

10

G

252/1.D

C10G 35/12 (2006.01) B01J 8/12 (2006.01) B01J 23/96 (2006.01) B01J 38/26 (2006.01) B01J 38/42 (2006.01)

Patent

CA 1265502

"GAS CIRCULATION METHOD FOR MOVING BED CATALYST REGENERATION ZONES" ABSTRACT A method is disclosed for continuously regenerating particulate catalyst used in a hydrocarbon conversion process such as catalytic reform- ing. The method is especially applicable to a moving bed regeneration zone. The catalyst being regenerated is passed into the top of the zone and slowly moves downward as a dense bed which is contacted with different gas streams at different elevations within the regeneration zone. A key feature involves employing a portion of relatively hot combustion gas with- drawn from one portion of the zone as a heating gas stream in a different portion of the zone, with the remainder of the combustion gas being cooled and recycled to the combustion zone. This eliminates the need to employ a heater to provide a suitable heating gas stream.

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