Processes for deionization and demineralization of fluids
    3.
    发明授权
    Processes for deionization and demineralization of fluids 失效
    流体去离子和去矿物质的过程

    公开(公告)号:US5863438A

    公开(公告)日:1999-01-26

    申请号:US856897

    申请日:1997-05-15

    IPC分类号: B01J39/04 B01J47/10 C02F1/42

    CPC分类号: B01J47/105 B01J39/046

    摘要: Processes for deionization and demineralization of a fluid containing ions comprising:(a) Loading an amine or ammonia buffer onto a first weakly acidic cation exchange resin to occupy cation exchange sites and to form a first bed comprising a first amine-buffered resin;(b) Passing said fluid containing ions through said first bed comprising said first amine-buffered resin and exchanging cations of said fluid for amine cations of said first amine-buffered resin to form a first effluent comprising an anion-buffer salt complex;(c) Passing said anion-buffer salt complex through a first weakly basic anion exchange resin where an anion portion of said anion-buffer salt complex is split from said anion-buffer salt complex by adsorption of said anion portion onto said weakly basic anion exchange resin to form a second effluent comprising buffer in free hydrated base form;(d) Passing said buffer in free hydrated base form to a second weakly acidic cation exchange resin where said buffer loads onto said second weakly acidic cation exchange resin as in step (a) and repeating the process of steps (b)-(d); and(e) Regenerating said first weakly acidic cation exchange resin with an organic acid.

    摘要翻译: 含离子流体的去离子和去矿物质的方法包括:(a)将胺或氨缓冲剂加载到第一弱酸性阳离子交换树脂上以占据阳离子交换位点并形成包含第一胺缓冲树脂的第一床; (b)使含有离子的所述流体通过包含所述第一胺缓冲树脂的所述第一床和所述流体的阳离子交换所述第一胺缓冲树脂的胺阳离子,以形成包含阴离子 - 缓冲盐络合物的第一流出物; (c)使所述阴离子 - 缓冲盐络合物通过第一弱碱性阴离子交换树脂,其中所述阴离子 - 缓冲盐络合物的阴离子部分从所述阴离子 - 缓冲盐络合物中分离,通过将所述阴离子部分吸附到所述弱碱性阴离子交换 树脂以形成包含游离水合碱形式的缓冲液的第二流出物; (d)将所述缓冲液以游离水合碱形式通入第二弱酸性阳离子交换树脂,其中如步骤(a)中所述缓冲剂负载在所述第二弱酸性阳离子交换树脂上,并重复步骤(b) - (d)的方法, ; 和(e)用有机酸再生所述第一弱酸性阳离子交换树脂。

    FORMATION AND IMMOBILIZATION OF SMALL PARTICLES BY USING POLYELECTROLYTE MULTILAYERS
    5.
    发明申请
    FORMATION AND IMMOBILIZATION OF SMALL PARTICLES BY USING POLYELECTROLYTE MULTILAYERS 有权
    使用聚电解质多层的小颗粒的形成和固定

    公开(公告)号:US20130224378A1

    公开(公告)日:2013-08-29

    申请号:US13405866

    申请日:2012-02-27

    摘要: A method for forming and immobilizing small particles on a filter substrate using a first and second polymer solution, a solution of sodium bromide and a solution of a metal salt. The method adjusts the pH of at least one of the first and second polymer solutions, immersing the filter substrate in the first polymer solution and immersing the filter substrate in the second polymer solution. The method includes repeating the steps of immersing the filter substrate in the first solution and the second solution alternately until desired number of layers is achieved. The method allows for the filter substrate to be immersed in the solution of the metal salt and subsequently in the solution of sodium bromide.

    摘要翻译: 使用第一和第二聚合物溶液,溴化钠溶液和金属盐溶液在过滤器基材上形成和固定小颗粒的方法。 该方法调节第一和第二聚合物溶液中的至少一种的pH,将过滤基材浸入第一聚合物溶液中并将过滤基材浸入第二聚合物溶液中。 该方法包括重复以下步骤:将滤色器基板交替浸入第一溶液和第二溶液中,直到获得所需数量的层数。 该方法允许将过滤基材浸入金属盐溶液中,随后浸入溴化钠溶液中。

    Processes for deionization and demineralization of fluids
    8.
    发明授权
    Processes for deionization and demineralization of fluids 失效
    流体去离子和去矿物质的过程

    公开(公告)号:US5665239A

    公开(公告)日:1997-09-09

    申请号:US585821

    申请日:1996-01-16

    IPC分类号: B01J39/04 B01J47/10 B01D15/08

    CPC分类号: B01J47/105 B01J39/046

    摘要: Processes for deionization and demineralization of a fluid containing ions comprising:(a) Loading an amine or ammonia buffer onto a first weakly acidic cation exchange resin to occupy cation exchange sites and to form a first bed comprising a first amine-buffered resin;(b) Passing said fluid containing ions through said first bed comprising said first amine-buffered resin and exchanging cations of said fluid for amine cations of said first amine-buffered resin to form a first effluent comprising an anion-buffer salt complex;(c) Passing said anion-buffer salt complex through a first weakly basic anion exchange resin where an anion portion of said anion-buffer salt complex is split from said anion-buffer salt complex by adsorption of said anion portion onto said weakly basic anion exchange resin to form a second effluent comprising buffer in free hydrated base form;(d) Passing said buffer in free hydrated base form to a second weakly acidic cation exchange resin where said buffer loads onto said second weakly acidic cation exchange resin as in step (a) and repeating the process of steps (b)-(d); and(e) Regenerating said first weakly acidic cation exchange resin with an organic acid.

    摘要翻译: 含离子流体的去离子和去矿物质的方法包括:(a)将胺或氨缓冲剂加载到第一弱酸性阳离子交换树脂上以占据阳离子交换位点并形成包含第一胺缓冲树脂的第一床; (b)使含有离子的所述流体通过包含所述第一胺缓冲树脂的所述第一床和所述流体的阳离子交换所述第一胺缓冲树脂的胺阳离子,以形成包含阴离子 - 缓冲盐络合物的第一流出物; (c)使所述阴离子 - 缓冲盐络合物通过第一弱碱性阴离子交换树脂,其中所述阴离子 - 缓冲盐络合物的阴离子部分从所述阴离子 - 缓冲盐络合物中分离,通过将所述阴离子部分吸附到所述弱碱性阴离子交换 树脂以形成包含游离水合碱形式的缓冲液的第二流出物; (d)将所述缓冲液以游离水合碱形式通入第二弱酸性阳离子交换树脂,其中如步骤(a)中所述缓冲剂负载在所述第二弱酸性阳离子交换树脂上,并重复步骤(b) - (d)的方法, ; 和(e)用有机酸再生所述第一弱酸性阳离子交换树脂。

    Reclaiming of spent brine
    9.
    发明授权
    Reclaiming of spent brine 失效
    回收废盐水

    公开(公告)号:US5254257A

    公开(公告)日:1993-10-19

    申请号:US5668

    申请日:1993-01-19

    摘要: The method of purifying spent brine from the regeneration of ion exchange resin, for example resin in water softeners. The method comprises acidifying the spent brine to a pH of less than 3 with an acid other than sulfuric acid, which acid is preferably chosen from at least one acid which forms a calcium salt that is more water soluble than calcium sulfate. One passes the brine through a nanofiltration membrane to purify the brine by separating from it a waste stream which comprises the majority of the polyvalent ions present, so that the purified brine has most of its contaminating polyvalent ions removed.

    摘要翻译: 从离子交换树脂的再生中纯化废盐水的方法,例如水软化剂中的树脂。 该方法包括用除硫酸之外的酸将废盐水酸化至小于3的pH,该酸优选选自形成比硫酸钙更可溶于水的钙盐的至少一种酸。 一个通过盐水通过纳滤膜,通过从其中分离出包含大多数存在的多价离子的废物流来净化盐水,从而净化的盐水中除去大部分污染的多价离子。