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    • 3. 发明申请
    • SPIRAL WOUND ELEMENT WITH IMPROVED FEED SPACER
    • 螺旋元件与改进的进料间隔
    • WO2003092872A1
    • 2003-11-13
    • PCT/US2003/011084
    • 2003-04-11
    • FILMTEC CORPORATIONJOHNSON, Jon, E.
    • JOHNSON, Jon, E.
    • B01D65/08
    • B01D63/10Y10T428/24058Y10T428/24132
    • The present invention is an improved feed spacer, spiral wound element incorporating said feed spacer, filtration system and a method for making and using the same. In one embodiment the present invention includes an improved spiral wound element having: a central collection tube with a plurality of openings along its length to receive permeate; at least one filtration envelope extending outwardly from and wound about the tube and at least one feed spacer sheet wound about the collection tube wherein the feed spacer sheet being in planar contact with the outer surface of at least one filtration envelope. The feed spacer sheet is a net comprising a first set of substantially parallel filaments crossed with a second set substantially parallel filaments to form a plurality of parallelograms having an acute angle less than 70°, the net oriented such that a line bisecting said acute angle is approximately parallel to the axis of the central collection tube and wherein the net has a strand thinning parameter greater than 1.3.
    • 本发明是一种改进的进料间隔物,包含所述进料间隔物的螺旋缠绕元件,过滤系统及其制备和使用方法。 在一个实施例中,本发明包括一种改进的螺旋缠绕元件,其具有:中心收集管,其沿其长度具有多个开口以容纳渗透物; 至少一个从所述管向外延伸并围绕所述管缠绕的至少一个过滤封套和围绕所述收集管缠绕的至少一个进料间隔片,其中所述进料隔离片与至少一个过滤封套的外表面平面接触。 馈送间隔片是包括第一组基本上平行的细丝的网,其与第二组基本上平行的细丝交叉,以形成具有小于70°的锐角的多个平行四边形,网取向为使得将所述锐角平分的线是 大致平行于中央收集管的轴线,并且其中网具有大于1.3的股线变薄参数。