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    Air separation device and air separation method
    1.
    发明授权
    Air separation device and air separation method 有权

    公开(公告)号：US12123647B2

    公开(公告)日：2024-10-22

    申请号：US17624707

    申请日：2019-07-10

    Applicant: TAIYO NIPPON SANSO CORPORATION

    Inventor： Hiroshi Tachibana

    IPC: F25J3/04

    CPC classification number: F25J3/04478 ,  F25J3/04018 ,  F25J3/04448 ,  F25J3/04715 ,  F25J3/04787 ,  F25J3/048 ,  F25J2200/08 ,  F25J2210/40 ,  F25J2215/04 ,  F25J2215/42 ,  F25J2215/50 ,  F25J2215/58

    Abstract: An air separation device for distilling air at a low temperature, includes a high-pressure column to separate high-pressure raw material air into high-pressure nitrogen gas and high-pressure oxygen-enriched liquefied air; a low-pressure column to separate the high-pressure oxygen-enriched liquefied air into low-pressure nitrogen gas, low-pressure liquefied oxygen, and argon-enriched liquefied oxygen; an argon column to separate the argon-enriched liquefied oxygen having a pressure higher than the pressure into argon gas and medium-pressure liquefied oxygen; first and second indirect heat-exchangers; first and second gas-liquid separation chambers; a first/second passage which communicates the gas/liquid phase of the low-pressure column and the gas phase of the second gas-liquid separation chamber; and a first/second opening/closing mechanism located on the first/second passage.

    SYSTEM AND METHOD FOR GENERATION OF OXYGEN BY LOW-TEMPERATURE AIR SEPARATION
    6.
    发明申请
    SYSTEM AND METHOD FOR GENERATION OF OXYGEN BY LOW-TEMPERATURE AIR SEPARATION 有权
    通过低温空气分离产生氧气的系统和方法

    公开(公告)号：US20160265841A1

    公开(公告)日：2016-09-15

    申请号：US15059708

    申请日：2016-03-03

    Applicant: Tobias Lautenschlager ,  Stefan Lochner

    Inventor： Tobias Lautenschlager ,  Stefan Lochner

    IPC: F25J3/04

    CPC classification number: F25J3/04412 ,  F25J3/04084 ,  F25J3/0409 ,  F25J3/0429 ,  F25J3/04296 ,  F25J3/04387 ,  F25J3/04393 ,  F25J3/04448 ,  F25J3/04648 ,  F25J3/04654 ,  F25J3/0466 ,  F25J3/04666 ,  F25J3/04678 ,  F25J3/04872 ,  F25J3/04878 ,  F25J3/04884 ,  F25J2200/32 ,  F25J2205/30 ,  F25J2240/10 ,  F25J2245/58

    Abstract: A system and method serve generate oxygen by low-temperature air separation in a distillation column system having a high-pressure column and a low-pressure column, a main condenser which is constructed as a condenser-evaporator, and an auxiliary column. A gaseous oxygen-containing fraction is introduced into the auxiliary column. A nitrogen-containing liquid stream from the high-pressure column, the main condenser or the low-pressure column is applied as reflux to the top of the auxiliary column. An argon-rich stream from an intermediate site of the low-pressure column is introduced into an argon removal column that has an argon removal column top condenser. The low-pressure column is arranged beside the high-pressure column, the main condenser is arranged over the high-pressure column, the auxiliary column is arranged over the main condenser, the argon removal column is arranged over the auxiliary column and the argon removal column top condenser is arranged over the argon removal column.

    Abstract translation: 在具有高压塔和低压塔，构成冷凝器 - 蒸发器的主冷凝器和辅助塔的蒸馏塔系统中，通过低温空气分离产生氧气的方法和方法。 将含氧气体的馏分引入辅助塔中。 将来自高压塔，主冷凝器或低压塔的含氮液流作为回流施加到辅助塔的顶部。 将来自低压塔的中间部位的富氩流引入到具有除氩塔顶冷凝器的氩除去塔中。 低压塔位于高压塔旁边，主冷凝器设置在高压塔上，辅助柱设置在主冷凝器的上方，除氩塔设置在辅助塔上，除去氩气 塔顶冷凝器布置在氩气除去塔上。

    Rare gases recovery process for triple column oxygen plant
    7.
    发明授权
    Rare gases recovery process for triple column oxygen plant 有权
    三柱氧气厂的稀有气体回收过程

    公开(公告)号：US08978413B2

    公开(公告)日：2015-03-17

    申请号：US12796816

    申请日：2010-06-09

    Applicant: Bao Ha

    Inventor： Bao Ha

    IPC: F25J3/02 ,  F25J3/04

    CPC classification number: F25J3/04448 ,  F25J3/0429 ,  F25J3/04745 ,  F25J2200/08 ,  F25J2200/32 ,  F25J2215/52

    Abstract: The present invention is a process for recovering rare gases from a multiple column oxygen plant, wherein the multiple column oxygen plant comprises a higher pressure column, a lower pressure column, a middle pressure intermediate column, and a low pressure intermediate column, said middle pressure intermediate column comprising a first bottom reboiler and said low pressure intermediate column comprising a second bottom reboiler. The process includes providing a first oxygen rich liquid stream containing rare gases from the higher pressure column, wherein said first oxygen rich liquid stream is introduced to the first bottom reboiler. The process also includes removing a second oxygen rich liquid stream rich in rare gases from the bottom of the middle pressure intermediate column, wherein said second oxygen rich liquid stream is introduced to the low pressure intermediate column. The process also includes removing a first liquid purge stream concentrated in rare gases is removed from the low pressure intermediate column, wherein said first liquid purge stream is further concentrated downstream. And the process includes removing a third oxygen rich liquid stream lean in rare gases at a location that is at least one tray above the first bottom reboiler, wherein said third oxygen rich liquid stream is introduced to the lower pressure column.

    Abstract translation: 本发明是一种从多塔氧气装置回收稀有气体的方法，其中多塔氧气装置包括高压塔，低压塔，中压中间塔和低压中间塔，所述中压 中间塔包括第一底部再沸器和所述低压中间塔，其包括第二底部再沸器。 该方法包括从高压塔提供含有稀有气体的第一富氧液体流，其中所述第一富氧液流引入第一底部再沸器。 该方法还包括从中压中间塔的底部除去富含稀有气体的第二富氧液体流，其中所述第二富氧液流引入低压中间塔。 该方法还包括去除从低压中间塔中除去浓缩在稀有气体中的第一液体吹扫流，其中所述第一液体吹扫流进一步在下游浓缩。 并且该方法包括在位于第一底部再沸器上方的至少一个塔板的位置处去除稀有气体中的贫的第三富氧液流，其中所述第三富氧液体流被引入低压塔。

    Method and device for obtaining compressed oxygen and compressed nitrogen by the low-temperature separation of air
    8.
    发明申请
    Method and device for obtaining compressed oxygen and compressed nitrogen by the low-temperature separation of air 有权

    公开(公告)号：US20130205831A1

    公开(公告)日：2013-08-15

    申请号：US13816809

    申请日：2011-08-09

    Applicant: Dirk Schwenk ,  Alexander Alekseev ,  Frances Masterson ,  Dimitri Goloubev

    Inventor： Dirk Schwenk ,  Alexander Alekseev ,  Frances Masterson ,  Dimitri Goloubev

    IPC: F25J3/04

    CPC classification number: F25J3/04018 ,  F25J3/04084 ,  F25J3/0409 ,  F25J3/04175 ,  F25J3/0423 ,  F25J3/04296 ,  F25J3/04351 ,  F25J3/04357 ,  F25J3/04387 ,  F25J3/04406 ,  F25J3/04412 ,  F25J3/04448 ,  F25J3/04812 ,  F25J3/04884 ,  F25J3/04933 ,  F25J2200/52 ,  F25J2240/10 ,  F25J2240/12 ,  F25J2240/44

    Abstract: The invention relates to a method and device for obtaining compressed oxygen and compressed nitrogen by the low-temperature separation of air in a distillation column system for nitrogen-oxygen separation, said distillation column system having at least one high-pressure column (8) and one low-pressure column (460), wherein the low-pressure column (460) is in a heat-exchanging connection with the high-pressure column (8) by means of a main condenser (461) designed as a condenser-evaporator. Feed air is compressed in an air compressor (2). The compressed feed air (6, 734, 802, 840) is cooled down in a main heat exchanger (20) and at least partially introduced into the high-pressure column (8). An oxygen-enriched liquid (462, 465) is removed from the high-pressure column (8) and fed to the low-pressure column (460) at a first intermediate position (464, 467, 906). A nitrogen-enriched liquid (468, 470) is removed from the high-pressure column (8) and/or the main condenser (461) and fed to the head of the low-pressure column (460). A liquid oxygen flow (11, 12) is removed from the distillation column system for nitrogen-oxygen separation, brought to an elevated pressure in the liquid state (13), introduced into the main heat exchanger (20) at said elevated pressure, evaporated or pseudo-evaporated and heated to approximately ambient temperature in the main heat exchanger (20), and finally obtained as a gaseous compressed oxygen product (14). A high-pressure process flow (34, 734) is brought into indirect heat exchange with the oxygen flow in the main heat exchanger (20) and then depressurized (36, 38; 736, 738), wherein the depressurized high-pressure flow (37, 737) is introduced at least partially in the liquid state into the distillation column system for nitrogen-oxygen separation. A gaseous circuit nitrogen flow (18, 19) is drawn from the high-pressure column and at least partially (21) compressed in a circuit compressor (22). A first sub-flow (45, 46; 244, 242, 230; 845, 846) of the circuit nitrogen flow is removed from the circuit compressor (22, 322), cooled down in the main heat exchanger (20), at least partially condensed in the bottom evaporator (9, 209) of the high-pressure column (8) in indirect heat exchange with the bottom liquid of the high-pressure column (8), and conducted back into the distillation column system for nitrogen-oxygen separation. A second sub-flow of the circuit nitrogen flow is branched off upstream and/or downstream of the circuit compressor and/or from an intermediate stage of the circuit compressor at a product pressure (P, P1, P2, P3, P4) and obtained as a compressed nitrogen product (27, 29, 53, 564, 565). The circuit compressor (22, 322) is designed as a hot compressor and is driven by means of external energy.

    Process and apparatus for the cryogenic separation of air
    10.
    发明授权
    Process and apparatus for the cryogenic separation of air 失效
    空气低温分离的方法和装置

    公开(公告)号：US06651460B2

    公开(公告)日：2003-11-25

    申请号：US10282406

    申请日：2002-10-29

    Applicant: Declan P. O'Connor

    Inventor： Declan P. O'Connor

    IPC: F25J302

    CPC classification number: F25J3/04412 ,  F25J3/04303 ,  F25J3/04448 ,  F25J3/04454 ,  F25J3/04872 ,  F25J3/04939 ,  F25J2200/32 ,  F25J2200/34 ,  F25J2200/96 ,  F25J2205/30 ,  F25J2245/40 ,  F25J2245/42 ,  F25J2290/10 ,  Y10S62/90

    Abstract: Oxygen-containing gas comprising no more than about 50 mol % oxygen is fed (150) to an auxiliary separation column (40) in a multiple column cryogenic air distillation system comprising at least a higher pressure (“HP”) column (10) and a lower pressure (“LP”) column (30) for separation into nitrogen-rich overhead vapor and oxygen-rich liquid. Oxygen-rich liquid is fed (154) from the auxiliary column (40) to an intermediate location in the LP column (30). The auxiliary column (40) is refluxed with a liquid stream from or derived from the HP column (10). One advantage of the invention is that the diameter of the upper sections (II, III) of the LP column (30) need no longer be larger than the diameter of the rest of the column system thereby increasing the capacity of the column system (under the constraint of a defined maximum column section diameter).

    Abstract translation: 包含不超过约50mol％氧气的含氧气体在包括至少较高压力（“HP”）塔（10）的多塔低温空气蒸馏系统中被供给（150）到辅助分离塔（40）和 用于分离成富氮塔顶蒸气和富氧液体的较低压力（“LP”）塔（30）。 富氧液体（154）从辅助塔（40）进入LP塔（30）的中间位置。 辅助塔（40）与来自HP塔（10）的液流一起回流。 本发明的一个优点是，LP塔（30）的上部（II，III）的直径不需要大于塔系统的其余部分的直径，从而增加塔系统的容量（下 定义的最大柱截面直径的约束）。

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