Uop Lcc

Jagjit Singh Lall

Paolo Palmas

Sathit Kulprathipanja

Michael S Sandacz

Dharmesh Chunilal Panchal

Mohammad Reza Mostofi-Ashtiani

A method for fluidizing a spent catalyst in a regenerator during a combustion process. The combustor includes a vessel and an air distributor. The air distributor includes an air grid and a plurality of first nozzles extending from the air grid. Spent catalyst is introduced into the vessel. Air is provided to the vessel via the plurality of first nozzles at a base combustion air rate. Additional air is provided to the vessels via a plurality of second nozzles of a fluffing air distributor at a fluffing air rate that is between 0.5 wt % and 10 wt % of the base combustion air rate to fluidize the catalyst. The second nozzles have outlets that are disposed below the air grid and above a bottom head of the vessel.

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Guildford, United Kingdom

Jagjit Singh Lall