C - Chemistry – Metallurgy – 25 – F
Patent
C - Chemistry, Metallurgy
25
F
204/122, 204/85
C25F 1/00 (2006.01) B01D 35/06 (2006.01) B01D 61/42 (2006.01) B01D 65/02 (2006.01) B01D 65/08 (2006.01) B01D 69/10 (2006.01) C25F 7/00 (2006.01)
Patent
CA 2008437
ABSTRACT FILTER CLEANING A filter comprises a composite membrane of an electrically conducting sheet, e.g. a woven mesh of metal filaments, and a porous or microporous layer, e.g. of organic polymer or of partly sintered inorganic particles. The layer may overlie the sheet or be co- planar with it. An electric current is passed through the process liquid between the sheet and a counter electrode, and acts to loosen filter cake. Particularly when operated in a cross-flow mode, with intermittent imposition of electric current, the filter has an increased service life.
Butler Colin
Davidson Alexander P.
Summers Steven W.
Thomas Michael P.
Alcan International Limited
Butler Colin
Davidson Alexander P.
Fetherstonhaugh & Co.
Summers Steven W.
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