Regeneration of a dehydrogenation catalyst slip-stream
AssigneeUop LLC
InventorsAvram M. Buchbinder, John J. Senetar, Wei Pan, Wolfgang A Spieker, Richard A. Johnson, II
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Abstract
A fluidized catalytic reactor system cycles from 0.05-5% of catalyst at a time through a rejuvenation unit to be heated in the presence of oxygen to maintain catalyst activity. The use of the rejuvenation unit that may be 2% of the size of the main catalyst regeneration unit allows for reduction in equipment size and in catalyst inventory. The catalyst that is sent to the rejuvenation unit may be spent catalyst but may be partially or fully regenerated catalyst. The rejuvenation unit may be heated by combusting fuel or by hot flue gas.
Claims15
A process for managing or controlling catalyst activity comprising sending about 0.05 to 5% of quantity of catalyst flow within a propane dehydrogenation system to a catalyst rejuvenation unit wherein said system comprises a reactor, a catalyst regeneration unit and said catalyst rejuvenation unit and catalyst piping to send catalyst to and from each of said reactor, said catalyst regeneration unit and said catalyst rejuvenation unit, wherein the catalyst sent to said rejuvenation unit is heated to a temperature above 715° C. in presence of a gas comprising more than 2 mol % O2.
Dependencies are inferred from the claim text.