Technique for sequential rotation of reactors in a multi-reactor

Details Technique for sequential rotation of reactors in a multi-reactor Technique for sequential rotation of reactors in a multi-reactor

1986-09-22

1988-12-06

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including heat exchanger for reaction chamber or reactants...

422194, 422223, 422116, 502 20, B01J 400

Patent

active

047895284

ABSTRACT:
A multi-reactor hydrocarbon catalytic conversion system includes at least three reactors, a feed source for providing hydrocarbon feed to the reactors and apparatus for sequentially backwardly rotating the reactors during process mode operation of the reactors. In each of a series of sequential cycles, at least one reactor currently operates in a regeneration mode position, while other reactors operate in process mode positions. A reactor having freshest catalyst is in a last process mode position, and a reactor having relatively least fresh catalyst is in a first process mode position. The reactor having relatively least fresh catalyst receives fresh feed first from the feed source, and the reactor having freshest catalyst receives the partially converted feed last. Method and apparatus are provided for rotation of the reactors, without the necessity of stopping operation of the catalytic conversion process while the shifting of the reactors is being performed. Heat exchangers are provided to control the inlet temperature of effluent provided to downstream reactors. The heat exchangers can occupy fixed process positions or, alternatively, can swing with the reactors in the sequential rotation process.

REFERENCES:
patent: 4259294 (1981-03-01), Van Zijll Langhout

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