Filtration method and apparatus

Details Filtration method and apparatus Filtration method and apparatus

B - Operations, Transporting

01

D

182/19

B01D 37/00 (2006.01) B01D 24/10 (2006.01) B01D 29/11 (2006.01) B01D 37/03 (2006.01)

Patent

CA 1218312

ABSTRACT FILTRATION METHOD AND APPARATUS A method for filtering a fluid medium containing solids, in a filtration zone having a filter, comprises maintaining a pressure difference across the filter, thereby obtaining a fluid filtrate, and introducing into the filtration zone a second fluid which is substantially immiscible with, and has a density different from, the fluid medium, in which the filtration zone is closed and in which the method is operated under conditions such that solids are maintained in suspension substantially throughout the filtration zone. The method may be conducted by introducing the fluid medium into a duct 1 having a filter 2, removing the filtrate through a transport line 3, e.g. under the influence of a vacuum pump 6. The second fluid is air introduced via a Venturi pump 7.

421351

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