利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

10 条记录 (耗时 0.018 秒)

    Temperature swing adsorption process
    2.
    发明授权
    Temperature swing adsorption process 失效
    变温吸附过程

    公开(公告)号：US06409800B1

    公开(公告)日：2002-06-25

    申请号：US09648982

    申请日：2000-08-28

    申请人： Adeola F. Ojo ,  Frank R. Fitch ,  Martin Bülow

    发明人： Adeola F. Ojo ,  Frank R. Fitch ,  Martin Bülow

    IPC分类号： B01D5304

    CPC分类号： B01D53/02 ,  B01D53/0462 ,  B01D2253/108 ,  B01D2253/1085 ,  B01D2257/404 ,  B01D2257/504 ,  B01D2257/702 ,  B01D2257/80 ,  B01D2259/4143 ,  B01D2259/4146 ,  B01D2259/416 ,  Y02C10/08 ,  Y10S95/902

    摘要： Nitrogen oxides and low molecular weight hydrocarbons are removed from air by subjecting the air to a temperature swing adsorption process using as the adsorbent a composite zeolite product containing both zeolite A and zeolite X. The composite zeolite product is preferably prepared by forming a mixture of an agglomerate of silica and sodium zeolite X having a Si/Al atomic ratio in the range of about 0.9 to less than about 1.2 and a water-soluble sodium aluminate salt; maintaining the mixture at a temperature in the range of about 25 to about 100° C. for a period of time sufficient to convert at least 50% of the silica to sodium zeolite A; and at least partially exchanging the zeolite A-containing product with divalent cations, preferably calcium ions.

    摘要翻译： 通过使空气进行变温吸附方法从空气中除去氮氧化物和低分子量烃，使用含有沸石A和沸石X的复合沸石产物作为吸附剂。复合沸石产物优选通过形成 Si / Al原子比在约0.9至小于约1.2范围内的二氧化硅和钠沸石X的附聚物和水溶性铝酸钠盐; 将混合物保持在约25至约100℃范围内的温度下足以将至少50％的二氧化硅转化为沸石A的时间; 并且至少部分地将含沸石A的产物与二价阳离子，优选钙离子交换。

    Temperature swing adsorption process
    3.
    发明授权
    Temperature swing adsorption process 失效
    变温吸附过程

    公开(公告)号：US06416569B1

    公开(公告)日：2002-07-09

    申请号：US09648802

    申请日：2000-08-28

    申请人： Martin Bülow ,  Adeola F. Ojo ,  Frank R. Fitch ,  Baldur Unger ,  Alfons Brandt

    发明人： Martin Bülow ,  Adeola F. Ojo ,  Frank R. Fitch ,  Baldur Unger ,  Alfons Brandt

    IPC分类号： B01D5304

    CPC分类号： C01B39/023 ,  B01J20/186 ,  B01J2220/42 ,  Y02C10/08 ,  Y02C20/10

    摘要： Nitrogen oxides and low molecular weight hydrocarbons are removed from air by subjecting the air to a temperature swing adsorption process using as the adsorbent a composite zeolite product containing both zeolite type A and zeolite type X. The composite zeolite product is prepared by crystallizing a sodium ion- or sodium ion- and potassium ion-containing alumina-silica hydrogel under conditions which result in the production of a zeolitic composite which contains both zeolite type A and zeolite type X crystal domains. In a preferred embodiment, calcium ions constitute a substantial number of the composite's exchangeable cations and the type X portion of the composite zeolite product has a silicon-to-aluminum atomic ratio in the range of 0.9 to less than 1.15. The nitrogen oxide- and hydrocarbon-selective adsorbent can be incorporated into an atmospheric air prepurification plant downstream of a water vapor-selective adsorbent and a carbon dioxide-selective adsorbent.

    摘要翻译： 通过使空气进行变温吸附方法，从空气中除去氮氧化物和低分子量烃，使用含有沸石A型和沸石型X的复合沸石产物作为吸附剂。复合沸石产物通过使钠离子 - 或含钠离子和钾离子的氧化铝 - 二氧化硅水凝胶在导致生成含有A型沸石和X型晶体结构域的沸石复合材料的条件下进行。 在优选的实施方案中，钙离子构成了大量的复合材料的可交换阳离子，并且复合沸石产品的X型部分的硅 - 铝原子比在0.9至小于1.15的范围内。 氮氧化物和烃选择性吸附剂可以并入到水蒸汽选择性吸附剂和二氧化碳选择性吸附剂下游的大气空气预纯化装置中。

    Synthesis of low silicon sodium X zeolite
    4.
    发明授权
    Synthesis of low silicon sodium X zeolite 失效
    低硅钠X沸石的合成

    公开(公告)号：US06596256B1

    公开(公告)日：2003-07-22

    申请号：US09648798

    申请日：2000-08-28

    申请人： Adeola F. Ojo ,  Frank R. Fitch ,  Martin Bülow ,  Craig S. Gittleman ,  Sudhakar R. Jale

    发明人： Adeola F. Ojo ,  Frank R. Fitch ,  Martin Bülow ,  Craig S. Gittleman ,  Sudhakar R. Jale

    IPC分类号： C01B3922

    CPC分类号： C01B39/22 ,  B01D2257/102 ,  B01D2257/11 ,  B01D2257/402 ,  B01D2257/404 ,  B01D2257/504 ,  B01D2257/702 ,  B01J20/18 ,  B01J20/186 ,  Y02C10/08 ,  Y02C20/10 ,  Y10S423/21

    摘要： Low silicon sodium X zeolite containing little or no sodium A zeolite as by-product, is prepared by direct synthesis from sodium ion-containing hydrogels, the crystallization step being carried out by maintaining the hydrogels at a temperature below about 70° C., and preferably in the range of about 50 to about 70° C. for the duration of the crystallization step. Preferably, the ratios of components in the solutions used to make the hydrogel are such that in the hydrogel the silica/alumina molar ratio will be in the range of about 2.25:1 to about 2.4:1; the sodium oxide to silica molar ratio will be in the range 1.6:1 to about 1.9:1; and the water to sodium oxide molar ratio will be greater than about 60:1.

    摘要翻译： 通过从含钠离子的水凝胶直接合成制备含有很少或不含有钠A沸石的低硅钠X沸石，结晶步骤通过将水凝胶保持在低于约70℃的温度下进行，和 优选在约50至约70℃的范围内，在结晶步骤的持续时间内。 优选地，用于制备水凝胶的溶液中组分的比例使得在水凝胶中二氧化硅/氧化铝的摩尔比将在约2.25:1至约2.4:1的范围内; 氧化钠与二氧化硅的摩尔比将在1.6:1至约1.9:1的范围内; 并且水与氧化钠的摩尔比将大于约60:1。