B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
252/10
B01J 21/20 (2006.01) B01J 23/90 (2006.01)
Patent
CA 1225075
ABSTRACT OF THE DISCLOSURE Used catalyst containing carbon and sulfur deposits is continously regenerated by staged burnoff of the carbon and sulfur using a multiple zone treatment vessel containing thin beds of catalyst. The catalyst is exposed to successively increased temperatures and oxygen concentrations to effectively remove substantially all the carbon and sulfur deposits. The used catalyst can be that removed from hydroconversion processes, such as from "H-Oil",TM "H-Coal"TM and fluid catalytic cracking processes, and processed in a multizone treatment vessel in combination with proper auxi- liary heating equipment for continuous step-wise regeneration of the catalyst. Operating conditions of catalyst temperature, oxygen concentration of gas, and catalyst resi- dence time in each stage of the catalyst regeneration process are carefully controlled to provide staged burnoff of carbon and sulfur deposits for superior regenerated catalyst results. The hot regenerated catalyst withdrawn from the last zone is cooled against make-up air to improve the overall thermal efficiency of the process.
464401
Gowling Lafleur Henderson Llp
Hri Inc.
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