Porous media for dissipating electrical charge

B - Operations – Transporting – 01 – D

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Details

B01D 39/16 (2006.01) B01D 39/20 (2006.01)

Patent

CA 2391015

Disclosed are porous media, including filter media, that dissipate electrical charges that are generated when a fluid such as a non-polar fluid moves through the porous media. The porous media include a non-conductive glass, polymeric, or ceramic fiber and a conductive polymer fiber, a non-conductive glass or ceramic fiber and a conductive material-coated fiber, a non-conductive glass fiber and a metal-impregnated conductive fiber, a non-conductive synthetic polymeric fiber and a metal-coated fiber, a non-conductive natural polymeric fiber and a conductive material-impregnated fiber, or a non-conductive glass, ceramic, or synthetic polymeric fiber and a metal fiber. A composite filter medium comprises a conductive or nonconductive fiber layer laid on and bonded to an electrically conductive substrate.

L'invention concerne des milieux poreux, notamment des milieux filtrants, dissipant les charges électriques générées lorsqu'un fluide tel qu'un fluide non polaire passe à travers les milieux poreux. Les milieux poreux comprennent une fibre de verre, polymère ou céramique non conductrice ainsi qu'une fibre polymère conductrice, une fibre de verre ou céramique non conductrice ainsi qu'une fibre revêtue d'un matériau conducteur, une fibre de verre non conductrice ainsi qu'une fibre conductrice imprégnée de métal, une fibre polymère synthétique non conductrice ainsi qu'une fibre revêtue de métal, une fibre polymère naturelle non conductrice et une fibre imprégnée d'un matériau conducteur ou une fibre de verre, céramique ou polymère synthétique non conductrice ainsi qu'une fibre métallique. Un milieu filtrant composite comprend une couche de fibres conductrices ou non conductrices posée sur et liée à un substrat électroconducteur.

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