Argon purification
    11.
    发明授权
    Argon purification 失效
    氩气净化

    公开(公告)号:US5019145A

    公开(公告)日:1991-05-28

    申请号:US443529

    申请日:1989-11-30

    IPC分类号: F25J3/04

    摘要: A process and apparatus for air separation by low temperature rectification are described in which argon is obtained exclusively by rectification. A crude argon column (24) is equipped with at least 150 theoretical plates in the form of low pressure drop packing so that, in it, a substantially complete separation of the oxygen is possible, e.g., less than about 10 ppm, preferably less than 1 ppm oxygen.

    摘要翻译: 描述了通过低温精馏进行空气分离的方法和装置,其中仅通过精馏获得氩气。 粗氩塔(24)配备有至少150个低压降填料形式的理论塔板,因此在其中基本上完全分离氧是可能的,例如小于约10ppm,优选小于 1 ppm氧气。

    Process and apparatus for recovery of pure argon
    12.
    发明授权
    Process and apparatus for recovery of pure argon 失效
    回收纯氩的工艺和设备

    公开(公告)号:US5590544A

    公开(公告)日:1997-01-07

    申请号:US393389

    申请日:1995-02-23

    IPC分类号: C01B23/00 F25J3/00 F25J3/04

    摘要: A process and apparatus for recovery of pure argon from air utilize a rectification system comprising at least one air separating column (9) and a pure argon column (25). An argon-enriched mixture (24) of air gases is introduced into the pure argon column (25) in the lower region of which an essentially nitrogen-free argon product (26) is recovered. The head fraction (28) of the pure argon column (25), is liquefied at least partly by indirect heat exchange (29) using the evaporating cooling medium (11, 30). The condensate (28a) formed thereby is returned into the pure argon column. The indirect heat exchange (29) is carried out by means of a cooling medium (11, 30) which has an oxygen content of at least 10%. Independently thereof, the lower region of the pure argon column (25) is heated by indirect heat exchange (27) by means of a heating medium (11) in a liquid state, for example, with sump liquid from a pressure column (8).

    摘要翻译: 用于从空气中回收纯氩气的方法和装置利用包括至少一个空气分离塔(9)和纯氩塔(25)的整流系统。 将富氩气体的混合物(24)引入到纯氩塔(25)中,其中回收基本上无氮的氩产物(26)的下部区域。 至少部分地通过使用蒸发冷却介质(11,30)的间接热交换(29)将纯氩塔(25)的头部分(28)液化。 由此形成的冷凝物(28a)返回到纯氩塔中。 间接热交换(29)通过具有至少10%的氧含量的冷却介质(11,30)进行。 独立地,纯氩塔(25)的下部区域通过液体状态的加热介质(11)的间接热交换(27)加热,例如来自压力塔(8)的贮槽液体, 。

    Process and an apparatus for recovering argon
    13.
    发明授权
    Process and an apparatus for recovering argon 失效
    回收氩气的方法和装置

    公开(公告)号:US5426946A

    公开(公告)日:1995-06-27

    申请号:US250511

    申请日:1994-05-27

    IPC分类号: F25J3/04

    摘要: For extracting argon, air is separated in a rectifying system comprising at least one air separating column and one crude argon column. An argon-containing oxygen fraction is taken from the air separating column and is introduced into a crude argon column. In the upper area of the crude argon column, a crude argon fraction is removed and a first reflux liquid is charged. A first residual fraction is taken from the lower area of the crude argon column. The crude argon fraction is introduced into the lower area of a semipure column. In the upper area of the semipure column, an argon fraction is taken which has reduced oxygen, and a second reflux liquid is charged. From the lower area of the semipure column, a second residual fraction is taken which forms the first reflux liquid for the crude argon column.

    摘要翻译: 为了提取氩气,在包括至少一个空气分离塔和一个粗氩塔的精馏系统中分离空气。 从空气分离塔中取出含氩的氧馏分,并将其引入粗氩塔中。 在粗氩塔的上部区域中,除去粗氩馏分并加入第一回流液。 从粗氩塔的下部区域获取第一残留馏分。 将粗氩馏分引入半柱的下部区域。 在半定量柱的上部区域,取出具有还原氧的氩气馏分,并加入第二回流液体。 从半定量柱的下部区域,取第二残余馏分,形成粗氩塔的第一回流液。

    PROCESS AND APPARATUS FOR GENERATING A PRESSURIZED PRODUCT BY LOW-TEMPERATURE AIR FRACTIONATION
    14.
    发明申请
    PROCESS AND APPARATUS FOR GENERATING A PRESSURIZED PRODUCT BY LOW-TEMPERATURE AIR FRACTIONATION 审中-公开
    通过低温空气分解产生加压产品的方法和装置

    公开(公告)号:US20080047298A1

    公开(公告)日:2008-02-28

    申请号:US11735171

    申请日:2007-04-13

    IPC分类号: F25J3/00

    摘要: The process serves for generating a pressurized product by low-temperature air fractionation. Feed air (1) is compressed (2), purified (4), cooled (9) and fed to a distillation column system (12) for nitrogen-oxygen separation (11, 23). A liquid product stream (13) is taken off from the distillation column system (12) for nitrogen-oxygen separation, brought (14) in the liquid state to an elevated pressure (PIV) and at this elevated pressure (PIV) vaporized or pseudovaporized (9). The (pseudo)vaporized product stream (16) is fed (17) as pressurized product to a gas pressure reservoir (19) which has a variable pressure (PA). The elevated pressure (PIV) is varied. The elevated pressure (PIV) is varied as a function of the pressure (PA) of the gas pressure reservoir (19).

    摘要翻译: 该方法用于通过低温空气分馏产生加压产物。 进料空气(1)被压缩(2),纯化(4),冷却(9)并进料到用于氮 - 氧分离的蒸馏塔系统(12)中(11,23)。 从蒸馏塔系统(12)中取出液体产物流(13)进行氮 - 氧分离,使液体状态(14)处于升高的压力(PIV),并将该升高的压力(PIV)汽化或假蒸发 (9)。 (假)气化产物流(16)作为加压产物进料(17)到具有可变压力(PA)的气体压力储存器(19)。 升高的压力(PIV)是不同的。 升高的压力(PIV)作为气体压力储存器(19)的压力(PA)的函数而变化。

    Process and apparatus for the variable production of a gaseous
pressurized product
    15.
    发明授权
    Process and apparatus for the variable production of a gaseous pressurized product 失效
    用于气态加压产品可变生产的方法和设备

    公开(公告)号:US5953937A

    公开(公告)日:1999-09-21

    申请号:US983572

    申请日:1998-03-23

    IPC分类号: F25J3/04

    摘要: Feed air is fed to a rectifying system (14, 15) for low-temperature separation, from which a liquid fraction (31, 32) is taken off and introduced into a first reservoir tank (33). The pressure of a variable rate of the liquid fraction (34) is increased (35). The liquid fraction (36) is evaporated under the elevated pressure by indirect heat exchange (12) and obtained as a gaseous pressurized product (37). A heat-transport medium circulates in a refrigeration cycle which has a cycle compressor (41, 42). A first partial stream (45) of the heat-transport medium (44) compressed in the cycle compressor (41, 42) is fed to the indirect heat exchange (12) to evaporate the liquid fraction (36) and is liquefied, at least in part, in the course of this. A second partial stream (59) of the heat-transport medium (44) compressed in the cycle compressor (41, 42) is expanded (43) so as to perform work. Liquefied heat-transport medium (45, 48) is buffered in a second reservoir tank (49).

    摘要翻译: PCT No.PCT / EP96 / 03175 Sec。 371日期:1998年3月23日 102(e)1998年3月23日PCT PCT 1996年7月18日PCT公布。 公开号WO97 / 04279 日期1997年2月6日将进料空气供给到用于低温分离的精馏系统(14,15),从其中取出液体馏分(31,32)并引入第一储存罐(33)。 液体馏分(34)的可变速率的压力增加(35)。 液体馏分(36)在升高的压力下通过间接热交换(12)蒸发并作为气体加压产物(37)获得。 热传输介质在具有循环压缩机(41,42)的制冷循环中循环。 将在循环压缩机(41,42)中压缩的热传输介质(44)的第一部分流(45)送入间接热交换器(12)以蒸发液体馏分(36),至少液化 在一定程度上,在这个过程中。 在循环压缩机(41,42)中压缩的热传输介质(44)的第二部分流(59)被扩展(43)以进行工作。 液化的热输送介质(45,48)被缓冲在第二储罐(49)中。