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    Process and installation for the production of ultra-pure nitrogen by distillation of air
    2.
    发明授权
    Process and installation for the production of ultra-pure nitrogen by distillation of air 失效
    通过蒸馏蒸馏生产超纯氮的工艺和安装

    公开(公告)号：US5440885A

    公开(公告)日：1995-08-15

    申请号：US182331

    申请日：1994-01-18

    申请人： Pascal Arriulou

    发明人： Pascal Arriulou

    IPC分类号： F25J3/04 ,  F25J3/00

    CPC分类号： F25J3/04781 ,  F25J3/04296 ,  F25J3/04351 ,  F25J3/0443 ,  F25J3/04642 ,  F25J2200/52 ,  F25J2200/54 ,  F25J2215/10 ,  F25J2215/44 ,  F25J2240/10 ,  F25J2240/42 ,  F25J2245/40 ,  F25J2250/20 ,  F25J2250/42 ,  F25J2250/50 ,  Y10S62/939

    摘要： Process and installation for the production of ultrapure nitrogen by distillation of air, wherein the air to be treated is separated in a first column (6) into nitrogen at the head and liquid at the bottom rich in oxygen. The nitrogen in the head is used to circulate in a refrigeration cycle, a flow of high pressure cycle nitrogen being purified from hydrogen in a second column (7) comprising a bottom vaporizer (11) which ensures the condensation of this nitrogen before its introduction into this second column, and a head condenser (10) cooled by the bottom liquid of the first column (6). The ultra-pure production nitrogen is withdrawn (at 24) from the bottom of the second column (7), and a second high pressure cycle nitrogen flow is condensed (in 10; 10A) by vaporization of the bottom liquid of the first column (6). At least a portion of the nitrogen condensed by vaporization of bottom liquid of the first column (6) is purified of hydrogen in the second column (7), and at least a portion of the nitrogen condensed by vaporization of bottom liquid in the first column (6) is introduced as reflux into the head of the first column (6).

    摘要翻译： 用于通过蒸馏空气生产超纯氮的方法和装置，其中待处理的空气在第一塔（6）中分离成头部的氮气和富含氧的底部的液体。 头部中的氮气用于在制冷循环中循环，在包括底部蒸发器（11）的第二塔（7）中从氢气中纯化氢气循环的氮气流，其确保在将氮气引入之前将其冷凝 该第二塔和由第一塔（6）的底部液体冷却的头部冷凝器（10）。 从第二塔（7）的底部排出超纯生产氮（在24℃），第二高压循环氮气通过第一塔底部液体的蒸发（在10; 10A）中冷凝 6）。 通过蒸发第一塔（6）的底部液体而冷凝的至少一部分氮被净化为第二塔（7）中的氢气，并且至少一部分氮气通过第一塔底部液体的蒸发而冷凝 （6）作为回流引入第一塔（6）的头部。

    Ultra-high purity nitrogen generating method and unit
    5.
    发明授权
    Ultra-high purity nitrogen generating method and unit 失效
    超高纯氮生成方法和单位

    公开(公告)号：US5682761A

    公开(公告)日：1997-11-04

    申请号：US684057

    申请日：1996-07-19

    申请人： Takashi Nagamura ,  Takao Yamamoto ,  Shinji Tomita

    发明人： Takashi Nagamura ,  Takao Yamamoto ,  Shinji Tomita

    IPC分类号： B01D53/04 ,  B01D53/86 ,  F25J3/04 ,  F25J3/08 ,  F25J1/00

    CPC分类号： F25J3/04357 ,  B01D53/0423 ,  F25J3/04157 ,  F25J3/04254 ,  F25J3/04321 ,  F25J3/04636 ,  F25J3/04642 ,  B01D2256/10 ,  B01D2257/504 ,  B01D2257/80 ,  B01D2259/40001 ,  F25J2200/04 ,  F25J2200/90 ,  F25J2205/60 ,  F25J2205/82 ,  F25J2210/42 ,  F25J2215/30 ,  F25J2215/44 ,  F25J2220/42 ,  F25J2220/44 ,  F25J2230/42 ,  F25J2245/42 ,  F25J2270/90 ,  Y02C10/08 ,  Y10S62/913

    摘要： Ultra-high purity nitrogen is generated by removing, from feed air, carbon dioxide, moisture and catalyst poisons of an oxidation catalyst contained therein by a decarbonating drier (4). The feed air is then introduced into a low-pressure rectification column (6), where it is roughly rectified to further remove the carbon dioxide, moisture and catalyst poison. Then raw nitrogen gas obtained in the low-pressure rectification column (6) is introduced into an oxidation column (8) so that carbon monoxide in the raw nitrogen gas is converted to carbon dioxide and hydrogen also contained therein to water. Thereafter the raw nitrogen gas is introduced into an adsorption column (10) so that carbon dioxide and water are removed by adsorption to provide feed raw nitrogen gas, which is fed into an intermediate-pressure rectification column (11), where it is rectified. Nitrogen gas from the top portion of the intermediate-pressure rectification column is condensed by a reboiler-condenser (6RC) to provide high purity liquid nitrogen; and the liquid nitrogen is returned to the intermediate-pressure rectification column (11), whereby a part of this high purity liquid nitrogen is used as a reflux liquid and the remaining part thereof is taken out of a rectifying stage that is several stages below the rectifying stage in the top portion of the intermediate-pressure rectification column as an ultra-high purity nitrogen gas product or ultra-high purity liquid nitrogen product.

    摘要翻译： 通过由脱碳干燥器（4）除去其中含有的氧化催化剂的二氧化碳，水分和催化剂毒物，从而从进料空气中除去超高纯氮。 然后将进料空气引入低压精馏塔（6）中，其中其大致精馏以进一步除去二氧化碳，水分和催化剂毒物。 然后，将在低压精馏塔（6）中得到的原料氮气导入氧化塔（8），将原料氮气中的一氧化碳转化为二氧化碳，氢也含有。 然后，将原料氮气引入吸附塔（10），通过吸附除去二氧化碳和水，以提供进料原料氮气，该原料氮气进料到中压精馏塔（11）中，在那里进行精馏。 来自中压精馏塔顶部的氮气通过再沸器 - 冷凝器（6RC）冷凝以提供高纯度液氮; 并将液氮返回中压精馏塔（11），由此将该部分高纯度液氮用作回流液体，其余部分被从几级下方的精馏段中取出 作为超高纯度氮气产物或超高纯度液氮产物的中压精馏塔顶部的精馏段。

    Nitrogen production method
    7.
    发明授权
    Nitrogen production method 失效
    氮生产方法

    公开(公告)号：US4617037A

    公开(公告)日：1986-10-14

    申请号：US793156

    申请日：1985-10-31

    申请人： Hidetake Okada ,  Satoshi Urata

    发明人： Hidetake Okada ,  Satoshi Urata

    IPC分类号： F25J3/04 ,  F25J3/00

    CPC分类号： F25J3/04284 ,  F25J3/04278 ,  F25J3/04351 ,  F25J3/044 ,  F25J3/04642 ,  F25J2200/50 ,  F25J2200/72 ,  F25J2200/74 ,  F25J2205/24 ,  F25J2215/30 ,  F25J2215/32 ,  F25J2250/20 ,  F25J2270/12 ,  F25J2270/40 ,  F25J2270/58

    摘要： A nitrogen production method wherein air is compressed, is removed of water and carbon dioxide contained therein, and is simultaneously cooled to a temperature close to the liquefying point, and the resultant cleaned and cooled air is fed into a rectifying column for rectification so that high purity nitrogen is withdrawn from the rectifying column overhead; and wherein the oxygen-enriched liquid air withdrawn from the rectifying column bottom is expanded and fed into a condensation step wherein it becomes a source of reflux producing cold in the above-mentioned rectifying column, and then a cold is produced by adiabatically expanding the vaporized gas, after which heat exchange with raw air is performed. In this method, there is provided a closed circulating system wherein a circulating gas which is compressed is cooled by heat exchange with a return gas of the circulating gas, and the resultant cooled gas is fed into a reboiler at the bottom of the above-mentioned rectifying column wherein it vaporizes a liquid in the bottom of the rectifying column, and after the compressed circulating gas itself is liquefied through the above described step and expanded, it is fed into the above-mentioned condenser wherein it is vaporized by heat exchange with the high purify nitrogen from the above-mentioned rectifying column, and further the resultant vaporized gas is restored to normal temperature by heat exchange with the above-mentioned compressed circulating gas and is then subjected to recompression for continued circulation.

    摘要翻译： 其中空气被压缩，除去其中所含的水和二氧化碳的氮气生产方法，并同时冷却至接近液化点的温度，并将得到的清洁和冷却的空气送入精馏塔进行精馏，使得高 从精馏塔顶部取出纯净氮; 并且其中从精馏塔底部排出的富氧液体空气膨胀并进入冷凝步骤，其中在上述精馏塔中成为冷却回流源，然后通过绝热膨胀蒸发的 气体，之后进行与原料空气的热交换。 在该方法中，提供了一种封闭的循环系统，其中通过与循环气体的返回气体的热交换来冷却被压缩的循环气体，并将所得到的冷却气体送入上述的底部的再沸器 精馏塔，其中蒸发精馏塔底部的液体，并且在压缩的循环气体本身通过上述步骤液化并膨胀之后，将其进料到上述冷凝器中，其中通过与 从上述精馏塔中净化氮气高，并且通过与上述压缩循环气体的热交换使得到的汽化气体恢复到常温，然后进行再压缩以继续循环。

    Cryogenic system for neon production
    10.
    发明申请
    Cryogenic system for neon production 审中-公开
    用于霓虹灯生产的低温系统

    公开(公告)号：US20100221168A1

    公开(公告)日：2010-09-02

    申请号：US12660563

    申请日：2010-03-01

    申请人： Joseph Theodore Bernstein

    发明人： Joseph Theodore Bernstein

    IPC分类号： C01B23/00

    CPC分类号： F25J3/04642 ,  F25J3/0409 ,  F25J3/04303 ,  F25J3/04412 ,  F25J2200/32 ,  F25J2215/32

    摘要： A method and apparatus for the recovery of crude neon in or as part of a cryogenic air separation system wherein a neon recovery tower recovers crude neon from a nitrogen product stream originating from the top of the high pressure tower, and wherein the cooling for condensing in the neon recovery tower is provided by evaporating the liquefied nitrogen product from the bottom of the neon tower after the nitrogen liquid passes through a pressure reducing valve.

    摘要翻译： 一种用于在低温空气分离系统中或作为低温空气分离系统的一部分回收粗氖的方法和装置，其中氖回收塔从源自高压塔顶部的氮产物流回收粗氖，并且其中冷凝用于冷凝 在氮气液体通过减压阀之后，通过从氖塔的底部蒸发液化氮产物来提供氖回收塔。