B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 63/06 (2006.01) B01D 63/00 (2006.01) B01D 69/02 (2006.01) B01D 71/32 (2006.01) B01D 71/36 (2006.01) C02F 1/44 (2006.01) C02F 3/12 (2006.01)
Patent
CA 2703799
Provided is a separation membrane element for filtration which has excellent filtration performance and is excellent in terms of chemical resistance and mechanical strength and with which a stable permeation flow rate can be obtained over a long period of time. A separation membrane element for filtration is configured to perform solid-liquid separation treatment by being immersed in a liquid to be treated which contains a suspended component, and includes a cylindrical filtration membrane obtained by forming a porous sheet including at least an expanded porous PTFE (polytetrafluoroethylene) membrane into a cylindrical shape and in which a hollow surrounded by the porous sheet serves as a treated-liquid passage; a support member for maintaining the hollow serving as the treated-liquid passage; and sealing parts which seal both axial-direction ends of the cylindrical filtration membrane so as to leave at least one treated-liquid takeout opening open.
L'invention concerne un élément de membrane de séparation destiné au filtrage, qui présente une excellente efficacité de filtrage et d'excellentes propriétés de résistance chimique et mécanique et permet d'obtenir un débit stable de perméation sur de longues périodes. Cet élément de membrane de séparation destiné au filtrage est immergé dans un liquide à traiter contenant un suspensoïde, et sert à mettre en oevre une séparation solide-liquide. Cet élément comprend: une membrane de filtrage cylindrique ayant été produite par le façonnage en forme cylindrique d'une feuille poreuse comprenant un film poreux étiré de PTFE (polytétrafluoroéthylène), et dans laquelle la partie creuse entourée par la feuille poreuse sert de passage pour le liquide traité; une matière de support pour maintenir ladite partie creuse; et des éléments d'étanchéité qui scellent les extrémités axiales de la membrane de filtrage cylindrique de manière à laisser au moins une ouverture de sortie pour le liquide traité.
Marks & Clerk
Sumitomo Electric Fine Polymer Inc.
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