Filtration systems and methods

Details Filtration systems and methods Filtration systems and methods

B - Operations, Transporting

01

D

B01D 61/14 (2006.01) A23L 2/74 (2006.01) B01D 29/11 (2006.01) B01D 35/12 (2006.01) B01D 46/40 (2006.01) B01D 61/20 (2006.01) B01D 61/22 (2006.01)

Patent

CA 2345265

A filtration system comprising a plurality of filters (14, 16, 18, 20). Each filter (14, 16, 18, 20) defines a respective filter flowpath extending adjacent a respective filtration medium (24) for tangential filtration by the filtration medium (24) of fluid passing through the filter flowpath. The system also comprises a manifold (32) connected to each filter (14, 16, 18, 20), the system being selectively operable in a first state in which the manifold (32) and the filter flowpaths form part of a first continuous flowpath (92, 36, 38, 40, 42, 44, 101, 56, 48, 50, 52, 54, 58, 88) around which fluid circulates passing in parallel through the filter flowpaths and a second state in which fluid circulates around a second continuous flowpath (94, 82, 86, 98, 101, 48, 58) including the filter flowpath of at least one (14) but not all of the filters, the second continous flowpath having a lower volume than the first continous flowpath and fluid passing into the second continuous flowpath from the manifold (32) responsive to tangential filtration in the second state.

Ce dispositif de filtration comporte plusieurs filtres (14, 16, 18, 20). Chaque filtre (14, 16, 18, 20) définit un circuit d'écoulement respectif de filtre, adjacent au milieu filtrant respectif (24), aux fins de la filtration tangentielle par ledit milieu filtrant (24) d'un fluide passant par ledit circuit d'écoulement de filtre. Le dispositif, qui comprend également un collecteur (32) relié à chaque filtre (14, 16, 18, 20), peut fonctionner de manière sélective dans un premier état dans lequel le collecteur (32) et les circuits d'écoulement de filtre constituent un premier circuit d'écoulement en continu (92, 36, 38, 40, 42, 44, 101, 56, 48, 50, 52, 54, 58, 88) autour duquel le fluide circule, passant en parallèle, par les circuits d'écoulements de filtre, et un second état dans lequel le fluide circule autour d'un second circuit d'écoulement en continu (94, 82, 86, 98, 101, 48, 58), y compris le circuit d'écoulement de filtre d'au moins un (14) des filtres mais non la totalité de ceux-ci. Le second circuit d'écoulement en continu est d'un volume inférieur à celui du premier et le fluide, en provenance du collecteur (32), pénètre dans le second circuit d'écoulement en continu en réaction à la filtration tangentielle effectuée dans le second état.

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