Apparatus for venting a catalyst cooler

摘要

The apparatus herein provide a catalyst cooler with a vent that communicates fluidizing gas to a lower chamber of a regenerator. Air that is used as fluidizing gas can then be consumed in the regenerator without promoting after burn in the upper chamber.

主权项

1. In a catalyst regenerator comprising a regenerator vessel having an inlet for catalyst and combustion gas, a regenerated catalyst outlet, a cooler catalyst outlet, a flue gas outlet, an upper chamber and a lower chamber; a catalyst cooler having a hot catalyst inlet in communication with the cooler catalyst outlet of said regenerator vessel, said catalyst cooler having a gas distributor, a vent provided at a top of said catalyst cooler so catalyst disengages from fluidizing gas before exiting the vent, a cooled catalyst exit and a plurality of heat exchange tubes in said catalyst cooler for carrying heat exchange fluid; a vent pipe communicating said vent with said regenerator vessel; the improvement of said vent pipe communicating said vent with said lower chamber of said regenerator vessel and a cooled catalyst pipe communicating said cooled catalyst exit with said regenerator vessel.