Method of filtration using semi-fluidized beds

Details Method of filtration using semi-fluidized beds Method of filtration using semi-fluidized beds

B - Operations, Transporting

01

D

183/82

B01D 24/36 (2006.01)

Patent

CA 1202577

METHOD OF FILTRATION USING SEMIFLUIDIZED BEDS ABSTRACT A method of filtering fine solids from a fluid (gas or liquid) flowing upwardly through a chamber containing a semifluidized bed of discrete filter particles. During a filtering operation, the upper or packed section of the bed is immobilized by a porous retainer at the top of the chamber and, as the operation proceeds, the packed bed section gradually expands downwardly, and the fluidized bed section below it progressively decreases in size, thereby extending the duration of the filtration run and yielding a more uniform distribution of solids throughout the filter medium. -1-

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