Method for withdrawing a particulate solid from a packed, fluidi

Details Method for withdrawing a particulate solid from a packed, fluidi Method for withdrawing a particulate solid from a packed, fluidi

1988-12-16

1992-03-24

Lacey, David L.

Conveyors: fluid current

Intake to fluid current conveyor

Load receptacle type

422145, 422219, 422232, 422233, 406146, 406197, B01J 808, B65G 5310

Patent

active

050982303

ABSTRACT:
A method is disclosed for withdrawing particulate spent catalyst particles from a packed, non-fluidized bed of such particles in contact with a liquid medium within a vessel having a withdrawal conduit or pipe which has an inlet that opens within the bottom of the bed and faces generally downwardly so that a first section extends upwardly from the inlet, and a second section extends downwardly, and the spent catalyst particles exits the packed bed through a uniform and continuous flow path opening into a solids recovery vessel whose pressure is controlled to regulate flow of such spent catalyst from the reaction vessel independent of the rate of flow through the withdrawal conduit.

REFERENCES:
patent: 3336217 (1967-08-01), Meaux
patent: 4738770 (1988-04-01), Hastings et al.

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