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    Air purification process
    3.
    发明授权
    Air purification process 失效
    空气净化过程

    公开(公告)号：US5906675A

    公开(公告)日：1999-05-25

    申请号：US940319

    申请日：1997-09-30

    申请人： Ravi Jain ,  James K. Tseng

    发明人： Ravi Jain ,  James K. Tseng

    IPC分类号： B01D53/047 ,  B01D53/26

    CPC分类号： B01D53/0462 ,  B01D53/047 ,  B01D53/261 ,  F25J3/04163 ,  F25J3/04169 ,  B01D2253/104 ,  B01D2253/108 ,  B01D2257/504 ,  B01D2257/80 ,  B01D2259/403 ,  B01D2259/4146 ,  B01D2259/416 ,  F25J2205/64 ,  F25J2205/82 ,  F25J2215/44 ,  Y02C10/08

    摘要： An air prepurification process carried out in a battery of three adsorption vessels arranged in parallel. The process includes three steps: a first step in which non-steady state PSA is carried out in the first and second vessels operated in alternating adsorption and bed regeneration mode while the adsorbent in the third vessel undergoes thermal regeneration; a second step in which non-steady state PSA is carried out in the second and third vessels operated in alternating adsorption and bed regeneration modes while the adsorbent in the first vessel undergoes thermal regeneration; and a third step in which non-steady state PSA is carried out in the first and third vessels operated in alternating adsorption and bed regeneration modes while the adsorbent in the second vessel undergoes thermal regeneration. Each vessel contains at least two adsorbent layers, including a first layer of activated alumina, which adsorbs substantially all moisture and some carbon dioxide from the feed air, and a second layer of zeolite, which adsorbs substantially all of the remaining carbon dioxide in the feed air. The feed air may be passed through beds of hydrogen oxidation and carbon monoxide oxidation catalysts positioned between the first and second layers, to convert any hydrogen and carbon monoxide in the feed air to water vapor and carbon dioxide, respectively, these components being removed from the feed air as it passes through the layer of zeolite.

    摘要翻译： 空气预净化过程是在三个并联布置的吸附容器的电池中进行的。 该方法包括三个步骤：在第三容器中的吸附剂经受热再生的同时，在交替吸附和床再生模式下操作的第一和第二容器中进行非稳态PSA的第一步骤; 在第二容器和第三容器中以不同的吸附和床再生模式运行的非稳态PSA进行第二步骤，同时第一容器中的吸附剂进行热再生; 以及第三步骤，其中在第一和第三容器中以不同的吸附和床再生模式运行的第一和第三容器中进行非稳态PSA，而第二容器中的吸附剂经历热再生。 每个容器包含至少两个吸附剂层，其包括第一层活性氧化铝，其从进料空气中吸收基本上所有的水分和一些二氧化碳，以及第二层沸石，其吸附进料中基本上所有剩余的二氧化碳 空气。 进料空气可以通过位于第一和第二层之间的氢氧化和一氧化碳氧化催化剂床，以将进料空气中的任何氢和一氧化碳分别转化成水蒸汽和二氧化碳，这些组分从 进料空气通过沸石层。

    Apparatus for preparing ultra-pure nitrogen
    5.
    发明授权
    Apparatus for preparing ultra-pure nitrogen 失效
    超纯氮制备装置

    公开(公告)号：US5478534A

    公开(公告)日：1995-12-26

    申请号：US101984

    申请日：1993-08-04

    申请人： Jean Louise ,  Bertrand Mollaret ,  Jean-Yves Thonnelier ,  Daniel Gary

    发明人： Jean Louise ,  Bertrand Mollaret ,  Jean-Yves Thonnelier ,  Daniel Gary

    IPC分类号： B01D53/02 ,  B01D53/04 ,  B01J20/02 ,  B01J20/18 ,  C01B21/04 ,  F25J3/08 ,  B01J8/04 ,  C01B31/18

    CPC分类号： F25J3/04163 ,  C01B21/0422 ,  F25J3/04169 ,  C01B2210/005 ,  C01B2210/0053 ,  F25J2205/82 ,  F25J2215/44 ,  Y02C10/08 ,  Y02P20/152

    摘要： Process for preparing ultra-pure nitrogen containing less than 100 ppb (parts per billion) impurities, characterized in that at least the impurities consisting of carbon monoxide (CO) and/or hydrogen (H.sub.2) are removed by passing the gas from which at least one of these two components has to be removed, over a bed of particles including a metallic element namely copper (Cu) and/or ruthenium (Ru) and/or rhodium (Rh) and/or palladium (Pd) and/or osmium (Os) and/or iridium (Ir) and/or platinum (Pt) supported on a particulate support, by the technique of ion exchange and/or by the technique of impregnation. This technique enables to produce ultra-pure nitrogen by using it either with nitrogen obtained by distillation, or air to be distilled as an additional step for the removal of CO.sub.2 and H.sub.2 O. A device for carrying out the process constitutes another object of the invention.

    摘要翻译： 制备含有少于100ppb（十亿分之十）的杂质的超纯氮的方法，其特征在于至少由一氧化碳（CO）和/或氢（H 2）组成的杂质通过使至少 在包括金属元素即铜（Cu）和/或钌（Ru）和/或铑（Rh）和/或钯（Pd）和/或锇（Cu）的金属元素的床上必须除去这两种组分之一， Os）和/或负载在颗粒载体上的铱（Ir）和/或铂（Pt），通过离子交换技术和/或通过浸渍技术。 该技术能够通过使用通过蒸馏获得的氮气或要蒸馏的空气作为除去CO 2和H 2 O的附加步骤来生产超纯氮。 用于执行该过程的装置构成本发明的另一个目的。

    AIR SEPARATION METHOD
    9.
    发明申请
    AIR SEPARATION METHOD 审中-公开
    空气分离方法

    公开(公告)号：US20160123663A1

    公开(公告)日：2016-05-05

    申请号：US14994708

    申请日：2016-01-13

    申请人： Henry Edward Howard

    发明人： Henry Edward Howard

    IPC分类号： F25J3/04

    CPC分类号： F25J3/04012 ,  F25J3/04018 ,  F25J3/0409 ,  F25J3/04163 ,  F25J3/0423 ,  F25J3/04303 ,  F25J3/04412 ,  F25J3/04424 ,  F25J3/04654 ,  F25J3/04666 ,  F25J3/04672 ,  F25J3/04678 ,  F25J3/04709 ,  F25J3/04715 ,  F25J3/04721 ,  F25J2200/54 ,  F25J2210/58 ,  F25J2215/40 ,  F25J2220/40 ,  F25J2250/20 ,  F25J2250/40 ,  F25J2250/52 ,  F25J2270/02 ,  F25J2290/34

    摘要： A cryogenic air separation method and apparatus in which first and second liquid streams are produced. The first liquid stream has a higher oxygen content than air and can consist of a higher pressure distillation column bottoms and the second liquid stream, for instance, air, has a lower oxygen content than the first liquid stream and an argon content no less than the air. The second liquid stream is subcooled through indirect heat exchange with the first liquid stream and both of such streams are introduced into the lower pressure column. The second liquid stream is introduced into the lower pressure column above that point at which the crude liquid oxygen column bottoms or any portion thereof is introduced into the lower pressure column to increase a liquid to vapor ratio below the introduction of the second liquid stream and therefore, reduce the oxygen present within the column overhead.

    摘要翻译： 一种生产第一和第二液体流的低温空气分离方法和装置。 第一液体流具有比空气更高的氧含量，并且可以由较高压力的蒸馏塔底部和第二液体流（例如空气）组成，具有比第一液体流更低的氧含量，并且氩含量不低于 空气。 通过与第一液体流的间接热交换将第二液体流过冷，并且将这两个流引入低压塔。 将第二液体物流引入低于该粗液柱氧塔底部或其任何部分被引入低压塔的点以将液体与蒸汽的比例增加到低于引入第二液流的点 ，减少塔顶内存在的氧气。