Patent ID: 7214636
Filing Date: 2007-05-08
Classification: B01J,C10G,Y02P

Abstract:
1. A process for regenerating catalyst, wherein the process comprises the steps of: (a) receiving a coked catalyst in a regeneration zone from a reactor, (b) contacting the coked catalyst with a regeneration medium in the regeneration zone at a first superficial velocity and under conditions effective to convert at least a portion of the coked catalyst to regenerated catalyst and forming gaseous products; (c) directing the gaseous products and entrained catalyst from the regeneration zone to a separation zone, wherein the entrained catalyst flows in the separation zone at a second superficial velocity; (d) separating a majority of the gaseous products in the separation zone from a majority of the entrained catalyst in the separation zone; (e) returning the majority of the entrained catalyst to the regeneration zone; and (f) directing the regenerated catalyst from the regeneration zone to the reactor, wherein the ratio of the first superficial velocity to the second superficial velocity is at least 1.2.