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    Cryogenic Distillation Method and Installation for Air Separation
    2.
    发明申请
    Cryogenic Distillation Method and Installation for Air Separation 审中-公开
    低温蒸馏法和空气分离装置

    公开(公告)号：US20080223076A1

    公开(公告)日：2008-09-18

    申请号：US10585834

    申请日：2005-01-07

    申请人： Patrick Le Bot

    发明人： Patrick Le Bot

    IPC分类号： F25J3/04

    CPC分类号： F25J3/04303 ,  F25J3/04054 ,  F25J3/0409 ,  F25J3/04175 ,  F25J3/0429 ,  F25J3/04296 ,  F25J3/04387 ,  F25J3/04393 ,  F25J3/0446 ,  F25J3/04466 ,  F25J2200/06 ,  F25J2215/52 ,  F25J2215/54 ,  F25J2235/50 ,  F25J2240/04 ,  F25J2240/10

    摘要： The invention relates to a method and installation for separation of air by means of cryogenic distillation. According to the invention, all of the air is brought to a high pressure greater than the medium pressure and purified. Part of the purified air flow (11) is cooled in an exchange line (9) and, subsequently, divided into two fractions (13, 15). Each of the fractions expands in a turbine (17, 19), the intake pressure of the two turbines being greater than the medium pressure by at least 5 bars. Moreover, the discharge pressure of at least one of the two turbines is essentially equal to the medium pressure. At least part of the air that was expanded in at least one of the turbines is conveyed to the medium pressure column (100) of a double or triple column. Subsequently, a cold booster (23), which is mechanically connected to one (19) of the expansion turbines, draws the air which was cooled in the main exchange line and releases said air at a temperature greater than the intake temperature. The fluid thus compressed is reintroduced into the main exchange line, in which at least one part of the fluid condenses. In addition, at least one pressurised liquid (25) originating from one of the columns (200) is vaporised in the exchange line at an evaporating temperature and the turbine (17) which is not connected to the cold booster is connected to a booster (5) followed by a cooler.

    摘要翻译： 本发明涉及通过低温蒸馏分离空气的方法和装置。 根据本发明，所有的空气都被带到高于中压的高压并被净化。 净化空气流（11）的一部分在交换管线（9）中冷却，然后分成两部分（13,15）。 每个部件在涡轮机（17,19）中膨胀，两个涡轮机的进气压力大于中压至少5巴。 此外，两个涡轮机中的至少一个的排出压力基本上等于介质压力。 在至少一个涡轮机中膨胀的空气的至少一部分被输送到双柱或三列的中压塔（100）。 随后，机械地连接到一个（19）膨胀涡轮机的冷增压器（23）抽取在主换热管线中冷却的空气，并以大于进气温度的温度释放所述空气。 如此压缩的流体被重新引入主交换管线，其中至少一部分流体冷凝。 此外，源自塔（200）中的一个的至少一个加压液体（25）在蒸发温度下在交换管线中蒸发，并且未连接到冷增压器的涡轮机（17）连接到增压器（ 5），然后是一个冷却器。

    Process for obtaining gaseous and liquid nitrogen with a variable proportion of liquid product
    3.
    发明授权
    Process for obtaining gaseous and liquid nitrogen with a variable proportion of liquid product 失效
    用可变比例的液体产品获得气态和液氮的方法

    公开(公告)号：US06477860B2

    公开(公告)日：2002-11-12

    申请号：US09810340

    申请日：2001-03-19

    申请人： Dietrich Rottmann ,  Christian Kunz

    发明人： Dietrich Rottmann ,  Christian Kunz

    IPC分类号： F25J304

    CPC分类号： F25J3/0486 ,  F25J3/04018 ,  F25J3/0403 ,  F25J3/0409 ,  F25J3/04145 ,  F25J3/04206 ,  F25J3/04212 ,  F25J3/04321 ,  F25J3/04351 ,  F25J3/04357 ,  F25J3/04393 ,  F25J3/044 ,  F25J3/0443 ,  F25J3/04812 ,  F25J2200/32 ,  F25J2200/76 ,  F25J2215/44 ,  F25J2215/52 ,  F25J2215/56 ,  F25J2220/42 ,  F25J2220/50 ,  F25J2220/52 ,  F25J2230/42 ,  F25J2235/50 ,  F25J2240/46 ,  F25J2245/42 ,  F25J2250/42 ,  F25J2250/50

    摘要： In a single column distillation system for obtaining gaseous and liquid nitrogen with a variable proportions of liquid product by low-temperature separation from air, a first portion (12, 13) of nitrogen-rich fraction (5, 7, 8) is fed downstream of circulation compressor (9) to the liquefaction chamber of a condenser-evaporator (14) associated with the single column and condensed under a pressure higher than the operating pressure of the single column (4). A liquid oxygen-enriched fraction (228, 231) from the distillation column system is at least partially evaporated in the evaporation chamber of condenser-evaporator (14). A portion (18) of nitrogen-rich liquid (15, 16) from condenser-evaporator (14) is drawn off at least at times as liquid product. A second oxygen-enriched gas (221, 521) is removed from one of columns (546) of the distillation system and/or from the evaporation chamber of condenser-evaporator (14), machine expanded(23), and heated in main heat exchanger (2).

    摘要翻译： 在用于通过与空气进行低温分离从而获得具有不同比例的液体产物的气态和液氮的单塔蒸馏系统中，将富氮馏分（5,7,8）的第一部分（12,13）进料到下游 的循环压缩机（9）连接到与单塔相关联的冷凝器 - 蒸发器（14）的液化室，并在高于单塔（4）的操作压力的压力下冷凝。 来自蒸馏塔系统的液体富氧馏分（228,231）在冷凝器 - 蒸发器（14）的蒸发室中至少部分蒸发。 至少有时作为液体产物抽出来自冷凝器 - 蒸发器（14）的富氮液体（15,16）的一部分（18）。 第二个富氧气体（221,521）从蒸馏系统的一个塔（546）和/或从冷凝器 - 蒸发器（14）的蒸发室，机器膨胀（23）中的一个中除去，并在主热中加热 交换器（2）。

    Method and apparatus for the low-temperature fractionation of air
    4.
    发明授权
    Method and apparatus for the low-temperature fractionation of air 失效
    用于低温分馏空气的方法和装置

    公开(公告)号：US5669237A

    公开(公告)日：1997-09-23

    申请号：US614974

    申请日：1996-03-11

    申请人： Jurgen Voit

    发明人： Jurgen Voit

    IPC分类号： F25J3/04

    CPC分类号： F25J3/04709 ,  F25J3/04018 ,  F25J3/04139 ,  F25J3/04157 ,  F25J3/04169 ,  F25J3/04303 ,  F25J3/04381 ,  F25J3/04387 ,  F25J3/04418 ,  F25J3/04442 ,  F25J3/04448 ,  F25J3/04678 ,  F25J3/04878 ,  F25J3/04884 ,  F25J2200/54 ,  F25J2200/90 ,  F25J2205/32 ,  F25J2205/62 ,  F25J2215/52 ,  F25J2230/24 ,  F25J2235/02 ,  F25J2240/10

    摘要： For the method, air (103, 104) is fractionated in a medium-pressure column (6) and a low-pressure column (5). The sump heating (3) of the low-pressure column (5) is carried out with a second airflow (204), which is liquefied at the same time. An intermediate fraction (18) is taken from the low-pressure column (5) and evaporated in the head condenser (10) of the medium-pressure column (6). The thereby resulting vapor (19) is returned to the low-pressure column. In the event that impure oxygen is obtained, the second airflow (203, 204) is recompressed (202) upstream from the sump heating (3), external energy being supplied, to a pressure above that of the medium-pressure column, the pressure being relieved downstream from the sump heating (3) in a first pressure relief valve (208) to the pressure of the medium-pressure column (6). If pure oxygen is recovered, the sump heating of the low-pressure column is operated with an airflow, which at the same time is condensed at least partially and is under a pressure, which is less than the pressure of the medium-pressure column. If oxygen of high and low purity is to be recovered, a portion of the evaporated first intermediate fraction and/or a fraction obtained below the second intermediate site are recovered from the low-pressure column as oxygen product of lower purity.

    摘要翻译： 对于该方法，空气（103,104）在中压塔（6）和低压塔（5）中分馏。 低压塔（5）的贮槽加热（3）用同时液化的第二气流（204）进行。 中间馏分（18）从低压塔（5）取出并在中压塔（6）的头冷凝器（10）中蒸发。 由此产生的蒸气（19）返回到低压塔。 在获得不纯的氧气的情况下，将第二气流（203,204）从容器加热器（3）的上游再次压缩（202），外部能量被供给到高于中压塔的压力的压力，压力 在第一减压阀（208）中的贮槽加热（3）的下游释放到中压塔（6）的压力。 如果回收纯氧，低压塔的贮槽加热是以气流的形式运行的，气流同时被冷凝至少部分并处于小于中压塔压力的压力下。 如果要回收高纯度和低纯度的氧气，则从低压塔中回收一部分蒸发的第一中间馏分和/或低于第二中间位点的馏分作为较低纯度的氧产物。

    Process and installation for the production of gaseous oxygen under pressure
    5.
    发明授权
    Process and installation for the production of gaseous oxygen under pressure 失效
    在压力下生产气态氧气的过程和安装

    公开(公告)号：US5596885A

    公开(公告)日：1997-01-28

    申请号：US419555

    申请日：1995-04-10

    申请人： Maurice Grenier

    发明人： Maurice Grenier

    IPC分类号： C01B13/02 ,  F25J3/04 ,  F25J3/02

    CPC分类号： F25J3/04236 ,  F25J3/04018 ,  F25J3/04024 ,  F25J3/04054 ,  F25J3/04084 ,  F25J3/0409 ,  F25J3/04145 ,  F25J3/04296 ,  F25J3/04303 ,  F25J3/04393 ,  F25J3/04412 ,  F25J2215/52 ,  F25J2215/54 ,  F25J2290/62 ,  Y10S62/913

    摘要： An air separation process of the "pumped" type, in which liquid oxygen is removed from a double distillation column and is pumped to a higher production pressure and then vaporized under that pressure. The incoming air is divided into several streams. A first stream is compressed to the medium pressure, cooled and sent to the double distillation column (7). A second stream is compressed above about 25 bars, but below its condensation pressure during vaporization of the liquid oxygen under pressure, then cooled to an intermediate temperature, at which a portion of the air continues its cooling and is liquified (in 20A), then expanded (in 21A) and sent to the double column, while the rest is work expanded (in 4). Use in large size installations for the production of oxygen.

    摘要翻译： “泵送”型的空气分离过程，其中液体氧从双蒸馏塔中除去并被泵送到较高的生产压力，然后在该压力下蒸发。 进入的空气被分成几个流。 将第一流压缩至中压，冷却并送至双蒸馏塔（7）。 第二流在压力下在液体氧气蒸发期间被压缩在约25巴以上，但低于其冷凝压力，然后冷却至中间温度，在该温度下，一部分空气继续冷却并液化（以20A计） 扩展（在21A）并发送到双列，而其余的工作扩展（在4）。 用于大型安装用于生产氧气。

    Air separation
    6.
    发明授权
    Air separation 失效
    空气分离

    公开(公告)号：US5582031A

    公开(公告)日：1996-12-10

    申请号：US504940

    申请日：1995-07-20

    申请人： Thomas Rathbone

    发明人： Thomas Rathbone

    IPC分类号： F25J3/04 ,  F25J3/00

    CPC分类号： F25J3/04872 ,  F25J3/04084 ,  F25J3/0409 ,  F25J3/04303 ,  F25J3/04715 ,  F25J2200/08 ,  F25J2200/50 ,  F25J2200/54 ,  F25J2215/52 ,  Y10S62/924

    摘要： Air is compressed in a compressor, cooled in a main heat exchanger, partially condensed in a reboiler-condenser, introduced into a higher pressure rectifier, and separated therein into nitrogen and oxygen-enriched liquid. Resulting nitrogen is condensed in further reboiler-condensers. One part of the condensate is used as reflux in the higher pressure rectifier and another part as reflux in a lower pressure rectifier. A stream of oxygen-enriched liquid is withdrawn from the high pressure rectifier and sent to an intermediate pressure rectifier which is reboiled by one of the further reboiler-condensers and in which further nitrogen is separated. A stream of liquid further enriched in oxygen is withdrawn from the bottom of the intermediate pressure rectifier and is separated in the lower pressure rectifier and impure and pure oxygen products are withdrawn respectively therefrom. In addition an argon-enriched oxygen stream is withdrawn from the lower pressure rectifier through an outlet and separated in an argon rectifier. Further impure oxygen product is withdrawn from the bottom of the argon rectifier.

    摘要翻译： 空气在压缩机中压缩，在主热交换器中冷却，在再沸器 - 冷凝器中部分冷凝，引入高压精馏器，并将其分离成氮和富氧液体。 所得的氮气在进一步的再沸器 - 冷凝器中冷凝。 一部分冷凝物用作高压整流器中的回流，另一部分作为低压整流器中的回流。 将富氧液体流从高压精馏器排出并送入中压整流器，该中压整流器由另外的再沸器 - 冷凝器之一再沸腾，并进一步分离氮气。 进一步富含氧气的液体流从中压整流器的底部排出，并在低压精馏器中分离，不纯的和纯的氧产物分别从中抽出。 此外，富氩氧气流通过出口从低压精馏器排出并在氩气精馏器中分离。 从氩气整流器的底部排出进一步的不纯的氧气产物。