Process for obtaining gaseous and liquid nitrogen with a variable proportion of liquid product
    1.
    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

    IPC分类号: F25J304

    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)。

    Process for obtaining gaseous nitrogen
    2.
    发明授权
    Process for obtaining gaseous nitrogen 失效
    获得气态氮的方法

    公开(公告)号:US06470707B2

    公开(公告)日:2002-10-29

    申请号:US09810708

    申请日:2001-03-19

    IPC分类号: F25J304

    摘要: For obtaining gaseous nitrogen by low-temperature separation from air, a distillation column system has a single column (4). Compressed air (1) is cooled in a main heat exchanger (2) and fed (3) to single column (4). A nitrogen-rich fraction (5, 7, 8) is drawn off from the distillation column system and compressed at least in part in a circulation compressor (9, 1063). A first part (12, 13) of nitrogen-rich fraction (5, 7, 8) is fed downstream from circulation compressor (9) to the liquefaction chamber of a condenser-evaporator (14) and is condensed under a pressure higher than the operating pressure of single column (4), so to form nitrogen-rich liquid (15, 16). A liquid oxygen-enriched fraction (231) from the distillation column system is at least partially evaporated in the evaporation chamber of condenser-evaporator (14). A first oxygen-enriched gas (234, 533) formed in the evaporation chamber of condenser-evaporator (14), is introduced into single column (4). A second portion (19, 20, 1064) of the nitrogen-rich fraction (5, 7, 8) is drawn off at least at times as gaseous nitrogen product. A second oxygen-enriched gas (221, 521) is removed from the evaporation chamber of condenser-evaporator (14), work expanded (23), and heated in main heat exchanger (2).

    摘要翻译: 为了通过与空气进行低温分离获得气态氮,蒸馏塔系统具有单柱(4)。 压缩空气(1)在主热交换器(2)中冷却,并将(3)供给单塔(4)。 将富氮馏分(5,7,8)从蒸馏塔系统中排出并至少部分压缩在循环压缩机(9,1063)中。 将富氮馏分(5,7,8)的第一部分(12,13)从循环压缩机(9)的下游供给到冷凝器 - 蒸发器(14)的液化室,并在高于 单塔(4)的操作压力,从而形成富氮液体(15,16)。 来自蒸馏塔系统的液体富氧馏分(231)在冷凝器 - 蒸发器(14)的蒸发室中至少部分蒸发。 形成在冷凝器 - 蒸发器(14)的蒸发室中的第一富氧气体(234,533)被引入单塔(4)中。 至少有时作为气态氮产物排出富氮馏分(5,7,8)的第二部分(19,20,1046)。 第二富氧气体(221,521)从冷凝器 - 蒸发器(14)的蒸发室中移出,工作膨胀(23),并在主热交换器(2)中加热。

    Process and apparatus for separating air by cryogenic distillation
    3.
    发明授权
    Process and apparatus for separating air by cryogenic distillation 失效
    通过低温蒸馏分离空气的方法和装置

    公开(公告)号:US06463758B1

    公开(公告)日:2002-10-15

    申请号:US09280081

    申请日:1999-03-29

    申请人: Patrick Le Bot

    发明人: Patrick Le Bot

    IPC分类号: F25J304

    摘要: A first air stream is expanded in a first turbine (D1) before being mixed with a second air stream (104) in order to form a third stream (105). At least part of the third stream is sent to a second turbine (D2) and then to the double column. The stream expanded in the first turbine is smaller than the stream expanded in the second turbine.

    摘要翻译: 在与第二气流(104)混合之前,第一气流在第一涡轮(D1)中膨胀,以形成第三流(105)。 第三流的至少一部分被发送到第二涡轮机(D2),然后被送到双塔。在第一涡轮机中膨胀的气流小于在第二涡轮机中膨胀的气流。

    Process and device for production of oxygen and nitrogen
    5.
    发明授权
    Process and device for production of oxygen and nitrogen 失效
    用于生产氧气和氮气的方法和装置

    公开(公告)号:US06490884B2

    公开(公告)日:2002-12-10

    申请号:US09990365

    申请日:2001-11-23

    IPC分类号: F25J304

    摘要: Oxygen and nitrogen are produced by low-temperature separation of air in a rectification system that has a pressure column (4) and a low-pressure column (5). Charging air (1, 3) is introduced into pressure column (4). An oxygen-containing liquid fraction (8, 10) is removed from pressure column (4) and fed into low-pressure column (5). Gaseous nitrogen (17) from low-pressure column (5) is at least partially condensed in a top condenser (7) by indirect heat exchange with an evaporating cooling fluid (15). A nitrogen product stream (19) is removed from low-pressure column (5) and/or pressure column (4). An oxygen product stream (61, 62, 63) is pulled off from low-pressure column (5). The cooling fluid for top condenser (7) of low-pressure column (5) is formed by an intermediate liquid (15) that is drawn off from an intermediate point on low-pressure column (5).

    摘要翻译: 在具有压力塔(4)和低压塔(5)的精馏系统中通过空气的低温分离产生氧气和氮气。 将充气空气(1,3)引入压力塔(4)。 将含氧液体馏分(8,10)从压力塔(4)中取出并进料到低压塔(5)中。 来自低压塔(5)的气态氮(17)通过与蒸发冷却流体(15)的间接热交换在顶部冷凝器(7)中至少部分地冷凝。 氮气产物流(19)从低压塔(5)和/或压力塔(4)中移出。 将氧气产物流(61,62,63)从低压塔(5)中拉出。 用于低压塔(5)的顶部冷凝器(7)的冷却流体由从低压塔(5)上的中间点排出的中间液体(15)形成。

    Process and apparatus for producing pressurized oxygen and krypton/xenon by low-temperature fractionation of air
    7.
    发明授权
    Process and apparatus for producing pressurized oxygen and krypton/xenon by low-temperature fractionation of air 失效
    通过空气的低温分馏产生加压氧和氪/氙的方法和装置

    公开(公告)号:US06301929B1

    公开(公告)日:2001-10-16

    申请号:US09452167

    申请日:1999-12-01

    申请人: Stefan Lochner

    发明人: Stefan Lochner

    IPC分类号: F25J304

    摘要: The process and the apparatus serve for producing pressurized oxygen and krypton/xenon by low-temperature fractionation of air. The rectifying system has a low-pressure column (3) for the nitrogen-oxygen separation and a krypton-xenon enrichment column (15). Compressed and prepurified feed air (4) is introduced into the rectifying system. A first oxygen fraction (11) is taken off from the low-pressure column (3), brought (12) to an elevated pressure in the liquid state, vaporized and removed as gaseous pressurized oxygen product (24). In addition, a second oxygen fraction (16) is taken off from the low-pressure column (3) and passed (18) into the lower or central region of the krypton-xenon enrichment column (15). The first oxygen fraction (11) is taken off at least one actual or theoretical plate above the bottom of the low-pressure column (3) and, after the pressure elevation (12) is introduced (14) in the liquid state into the upper region of the krypton-xenon enrichment column (15). A krypton-enriched and/or xenon-enriched fraction (19) is taken off from the lower region of the krypton-xenon enrichment column (15). The pressurized oxygen product (24) is withdrawn in the gaseous state from the upper region of the krypton-xenon enrichment column (15).

    摘要翻译: 该方法和装置用于通过空气的低温分馏产生加压氧和氪/氙。 整流系统具有用于氮 - 氧分离的低压塔(3)和氪 - 氙浓缩塔(15)。 将压缩和预净化的进料空气(4)引入整流系统。 第一氧气馏分(11)从低压塔(3)中取出,使(12)处于液态的升高的压力下,作为气体加压氧产物(24)蒸发并除去。 此外,第二氧分数(16)从低压塔(3)中取出并通过(18)进入氪 - 氙浓缩塔(15)的下部或中心区域。 第一氧气馏分(11)从低压塔(3)底部的至少一个实际或理论塔板上取出,并且在压力升高(12)以液体状态引入(14)之后,上部 氪 - 氙浓缩柱(15)的区域。 从氪 - 氙浓缩塔(15)的下部区域取出富氪和/或氙浓缩馏分(19)。 加压氧产物(24)以气态从氪 - 氙浓缩塔(15)的上部区域排出。