Pumped catalyst heat exchanger

Details Pumped catalyst heat exchanger Pumped catalyst heat exchanger

1992-12-24

1993-12-28

Davis, Jr., Albert W.

Heat exchange

Intermediate fluent heat exchange material receiving and...

Solid fluent heat exchange material

422145, 422146, 502 44, B01J 3832

Patent

active

052731073

ABSTRACT:
A method of heating or cooling particulate material by indirect heat exchange of the particles with a heat exchange fluid in a heat exchanger is improved by the use of a gas vent that operates to pump catalyst into and out of a heat exchanger through a single opening. The build-up of a fluidizing medium in a particle cycling zone cycles catalyst into and out of a heat exchanger by opening and closing the single vent line. The method and apparatus of this invention are particularly useful for the cooling of FCC catalyst and simplifies the addition of a cooler by allowing the use of small size catalyst transfer lines. In addition, the method allows the catalyst cooler to be located a greater distance away from the FCC unit than possible in previous catalyst cooler designs.

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