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    • 2. 再颁专利
    • Regeneration of anion exchange resins
    • 阴离子交换树脂的再生
    • USRE29680E
    • 1978-06-27
    • US310383
    • 1972-11-29
    • Eli SalemDonald J. ButterworthLeo F. Ryan
    • Eli SalemDonald J. ButterworthLeo F. Ryan
    • B01D15/04B01J49/00
    • B01J49/0013
    • The invention relates to a method for converting strong-base anion exchange resins from the monovalent anion form to the hydroxide form. A .�.solution.!. .Iadd.source .Iaddend.of polyvalent anions is first passed through the resin to displace the monovalent anions. A solution of alkali metal hydroxide is then passed through the resin to convert it to the hydroxide form, and to produce an effluent solution of hydroxide ions and polyvalent anions. This effluent solution is then neutralized with an acid containing .Iadd.a source of .Iaddend.polyvalent anions, and the neutralized solution is passed through a second batch of resin in the monovalent anion form. In the preferred embodiment, a portion of the effluent is retained without neutralization and is delivered to the second batch of resin after the neutralized effluent to perform a portion of the hydroxide regeneration.
    • 1339788转换阴离子交换树脂ECODYNE CORP 1971年4月19日[1970年4月20日] 26264/71标题C3P [也在B1部分具有季铵活性基团的强碱阴离子交换树脂从一价阴离子形式(氢氧化物除外)转化为 氢氧化物形式通过使多价阴离子的水源通过第一批树脂以用多价阴离子从树脂中取代一价阴离子; 随后将碱金属氢氧化物水溶液通过树脂将树脂转化为氢氧化物形式,并制备含有氢氧根阴离子和多价阴离子的含水流出物溶液; 用含有多价阴离子源的酸中和至少一部分流出物溶液以形成中和的多价阴离子源; 并使中和源以一价阴离子形式通过第二批树脂以从其中置换一价阴离子。 “一价阴离子形式”是指氢氧化物形式以外的树脂形式。 “中和源”仅比排出液更酸性,并且可以是酸性,中性或甚至碱性。 合适的树脂是通过使叔胺与单乙烯基芳族烃和二乙烯基芳族烃的卤代甲基化交联共聚物反应而制备的树脂, 苯乙烯和二乙烯基苯的共聚物与或不与乙基乙烯基苯。 其它合适的树脂是叔胺与卤代烷基化,优选氯甲基化的乙烯基芳族化合物的共聚物的反应产物,例如乙烯基芳族化合物。 苯乙烯或乙烯基茴香醚和少量的聚烯烃化合物,例如, 二乙烯基苯,异戊二烯,丁二烯或三乙烯基苯。 在该实施例中使用氢氧化钠,硫酸钠和硫酸。
    • 4. 发明授权
    • Fluid filtration method and apparatus
    • 流体过滤方法和装置
    • US4267039A
    • 1981-05-12
    • US98522
    • 1979-11-29
    • Leo F. Ryan
    • Leo F. Ryan
    • B01D29/00B01D36/00B01D37/00
    • B01D36/001B01D29/15B01D29/52B01D29/66B01D2201/0446
    • A filter element including a perforated tubular member for supporting a filter medium, a tubular distributor core concentrically located within the support member and having a plurality of apertures in the core wall, and a plurality of dividers positioned around the tubular distributor core to prevent the unimpeded flow of liquid through the annular space between the support member and the distributor core and to provide a plurality of annular chambers between the core and the support member. The dividers are located so that the ratio of the flow of liquid through the apertures into an annular chamber to the area of the support member served by the annular chamber is the same for all chambers. In an alternative embodiment the diameter of the apertures is varied along the length of the filter element to assist in distributing the flow of liquid.
    • 一种过滤元件,包括用于支撑过滤介质的穿孔管状构件,同心地位于支撑构件内并且在芯壁中具有多个孔的管状分配器芯,以及围绕管状分配器芯定位的多个分隔件,以防止不受阻碍 液体流过支撑构件和分配器芯之间的环形空间,并且在芯和支撑构件之间提供多个环形室。 分隔件的位置使得通过孔的液体流入环形室到由环形室服务的支撑构件的区域的比率对于所有室是相同的。 在替代实施例中,孔的直径沿着过滤元件的长度变化以帮助分配液体流。