Fluidized bed reactor with back-mixing for dehydrogenation of light paraffins
AssigneeUop LLC
InventorsBryan K. Glover, Julie A. Zarraga, Michael A. Schultz
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Abstract
An improved process and system for the endothermic dehydrogenation of an alkane stream is described. The process and system for catalytic dehydrogenation comprise a back-mixed fluidized bed reactor. The alkane stream is dehydrogenated in a single reactor stage by contacting the alkane stream with a back-mixed fluidized bed of catalyst. Deactivated catalyst is withdrawn from the back-mixed fluidized reactor and heated to produce hot regenerated catalyst. The hot regenerated catalyst is returned to the back-mixed fluidized bed reactor at a rate sufficient to maintain the back-mixed fluidized bed reactor at substantially isothermal conditions.
Claims4
A catalytic dehydrogenation system for dehydrogenating a stream of alkanes comprising:
- a) a back-mixed fluidized bed reactor for contacting the stream of alkanes with a fluidized bed of catalyst;
- b) a first conduit for withdrawing deactivated catalyst from the back-mixed fluidized bed reactor;
- c) a regenerator in which the deactivated catalyst is heated to produce hot regenerated catalyst;
- and
- d) a second conduit for returning the hot regenerated catalyst to the back-mixed fluidized bed reactor;
- wherein the back-mixed fluidized bed reactor comprises an upper zone and a lower zone and the lower zone is more back-mixed than the upper zone.
Dependencies are inferred from the claim text.