Offset FCC coolers with improved catalyst circulation

Details Offset FCC coolers with improved catalyst circulation Offset FCC coolers with improved catalyst circulation

1992-12-14

1994-09-06

Davis, Jr., Albert W.

Heat exchange

Intermediate fluent heat exchange material receiving and...

Solid fluent heat exchange material

16510416, 422145, 422146, 502 44, F28C 316, B01J 3832

Patent

active

053439392

ABSTRACT:
A method of heating or cooling particulate material by indirect heat exchange of the particles with the heat exchange fluid in a heat exchanger located outside and offset from the vessel that supplies the particulate material and to which the particulate material returns uses the addition of an open conduit to increase catalyst circulation through the heat exchanger. The open conduit has been found to be effective when used internally or externally. The internal use of the open conduit minimizes structural changes required to retrofit the conduit to existing back mix coolers. The use of the conduit for increased catalyst circulation allows a flow through type cooler duty to be produced in an amount of space that would ordinarily only permit the use of a backmix type cooler.

REFERENCES:
patent: 4438071 (1984-03-01), Vickers et al.
patent: 4439533 (1984-03-01), Lomas et al.
patent: 4698212 (1987-10-01), Walters et al.
patent: 4958680 (1990-09-01), Barnes et al.
patent: 4971767 (1990-11-01), Ludwigsen et al.

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