公开(公告)号：US5582033A

公开(公告)日：1996-12-10

申请号：US619382

申请日：1996-03-21

申请人： Dante P. Bonaquist ,  Michael Y. Jin

发明人： Dante P. Bonaquist ,  Michael Y. Jin

IPC分类号： F25J1/00 ,  F25J3/04

CPC分类号： F25J3/04224 ,  F25J3/04357 ,  F25J3/04393 ,  F25J3/04412 ,  F25J3/04678 ,  F25J2215/42 ,  F25J2215/44 ,  F25J2215/56 ,  F25J2220/44 ,  F25J2245/42 ,  Y10S62/924

摘要： A cryogenic rectification system for producing nitrogen having a low argon content wherein the reflux ratio in the upper portion of the higher pressure column of a double column system is modified by withdrawing nitrogen vapor from below the top of the column, liquefying the withdrawn vapor, and returning the liquefied nitrogen to the column at or near the withdrawal point and below the top of the column.

摘要翻译： 一种用于生产低氩含量的氮的低温精馏系统，其中双塔系统的高压塔上部的回流比通过从塔顶部抽出氮蒸汽来进行改性，液化所抽出的蒸气，以及 将液化的氮气返回到塔的顶部或塔顶处或其附近。

公开(公告)号：US5582032A

公开(公告)日：1996-12-10

申请号：US514291

申请日：1995-08-11

申请人： James T. Shelton, deceased ,  Bao Ha

发明人： James T. Shelton, deceased ,  Bao Ha

IPC分类号： F25J3/02 ,  C01B13/02 ,  F25J3/08 ,  F25J3/04 ,  F25J5/00

CPC分类号： F25J3/08 ,  F25J2200/02 ,  F25J2200/30 ,  F25J2200/50 ,  F25J2210/50 ,  F25J2215/56 ,  F25J2250/42 ,  F25J2250/50 ,  F25J2270/42 ,  F25J2290/90 ,  Y10S62/90

摘要： A process for producing an ultra-high purity fluid product comprising the steps of collecting in the lower portion of a cryogenic fractionation zone an ultra-high purity fluid product; providing reboil to said fractionation zone by condensing a portion of a lesser purity composition of the same fluid product by indirect heat exchange in a first reboiler; and vaporizing said portion of said lesser purity composition by indirect heat exchange with a warmer stream of an impure fluid.

摘要翻译： 一种用于生产超高纯度流体产品的方法，包括以下步骤：在低温分馏区的下部收集超高纯度流体产物; 通过在第一再沸器中通过间接热交换冷凝相同流体产物的较小纯度组合物的一部分来向所述分馏区提供再沸腾; 以及通过与不纯的流体的较热流的间接热交换来蒸发所述较小纯度组合物的所述部分。

公开(公告)号：US5267444A

公开(公告)日：1993-12-07

申请号：US864687

申请日：1992-04-07

申请人： Jean-Yves Lehman ,  Jean-Claude Colin

发明人： Jean-Yves Lehman ,  Jean-Claude Colin

IPC分类号： B01J19/32 ,  F25J3/04 ,  F25J3/02 ,  B01F3/04

CPC分类号： B01J19/32 ,  F25J3/04854 ,  F25J3/04909 ,  B01J2219/3221 ,  B01J2219/3222 ,  B01J2219/32227 ,  B01J2219/32255 ,  B01J2219/32279 ,  B01J2219/32408 ,  B01J2219/32483 ,  B01J2219/326 ,  F25J2215/56 ,  F25J2290/12 ,  F25J2290/20 ,  F25J2290/44 ,  Y10S62/905

摘要： A process for the cryogenic separation of mixtures containing oxygen to obtain a produce having a high concentration of oxygen. In this process, a heat and material exchange occurs in counter-current between a descending liquid and a rising gas in at least one transfer zone including a bundle of organized linings consisting of cross-undulated metallic layers. In at least one transfer zone where the concentration of oxygen is higher than 98%, the layers are made of a sheet of aluminum having a thickness between 0.3 and 1 mm. Additionally, the bundles of layers have a specific surface lower than 400 m.sup.2 /m.sup.3.

摘要翻译： 用于低温分离包含氧的混合物以获得具有高浓度氧的产物的方法。 在该过程中，在至少一个转移区域中的下降液体和升高气体之间的逆流中发生热和材料交换，包括由交叉波浪形金属层组成的有组织的衬垫束。 在氧浓度高于98％的至少一个转移区域中，这些层由厚度在0.3和1mm之间的铝板制成。 另外，层的层具有低于400m 2 / m 3的比表面积。

公开(公告)号：US5195324A

公开(公告)日：1993-03-23

申请号：US854094

申请日：1992-03-19

申请人： Harry Cheung

发明人： Harry Cheung

IPC分类号： F25J3/04

CPC分类号： F25J3/0443 ,  F25J2200/34 ,  F25J2200/50 ,  F25J2215/56 ,  F25J2220/52 ,  F25J2235/02 ,  F25J2250/20

摘要： A cryogenic rectification system wherein bottoms from a single column nitrogen production system are used to produce ultra high purity oxygen in a two column purification system, and bottoms from the first purification column are employed to drive the nitrogen column top condenser to generate additional nitrogen column reflux.

公开(公告)号：US5049173A

公开(公告)日：1991-09-17

申请号：US490017

申请日：1990-03-06

申请人： Thomas E. Cormier, Sr. ,  Rakesh Agrawal ,  Alan L. Prentice ,  Donald W. Woodward

发明人： Thomas E. Cormier, Sr. ,  Rakesh Agrawal ,  Alan L. Prentice ,  Donald W. Woodward

IPC分类号： F25J3/04

CPC分类号： F25J3/04709 ,  F25J3/04284 ,  F25J3/04303 ,  F25J3/04321 ,  F25J3/04412 ,  F25J3/0443 ,  F25J3/04454 ,  F25J3/04715 ,  F25J3/04872 ,  F25J3/04878 ,  F25J2200/06 ,  F25J2200/32 ,  F25J2200/34 ,  F25J2200/50 ,  F25J2200/90 ,  F25J2205/02 ,  F25J2215/50 ,  F25J2215/56 ,  F25J2245/02 ,  F25J2245/58 ,  F25J2250/20 ,  Y10S62/924 ,  Y10S62/939

摘要： The present invention relates to an improvement for the production of ultra-high purity oxygen from cryogenic air separation processes which produce nitrogen and/or commercial purity oxygen products. In particular, the improvement comprises removing or producing an oxygen-containing but heavy contaminant-lean (free, stream from one of the distillation columns of a single or multiple column cryogenic air separation facility and further stripping the removed or produced oxygen-containing stream in a fractionator to produce ultra-high purity oxygen (i.e., contaminant concentration

公开(公告)号：US4977746A

公开(公告)日：1990-12-18

申请号：US467768

申请日：1990-01-19

申请人： Maurice Grenier ,  Philippe Mazieres

发明人： Maurice Grenier ,  Philippe Mazieres

IPC分类号： F25J3/04

CPC分类号： F25J3/04715 ,  F25J3/04412 ,  F25J2200/06 ,  F25J2200/34 ,  F25J2200/90 ,  F25J2215/52 ,  F25J2215/56 ,  F25J2245/02 ,  Y10S62/924

摘要： Oxygen from the bottom of a low pressure column (4) is purified from hydrocarbons in a first auxiliary column (12), and the vapor at the top of this column is distilled in a second auxiliary column (17) heated at the base thereof with air at medium pressure. Ultra-pure oxygen is produced at the bottom of the second auxiliary column. Application in the production of ultra-pure oxygen for the electronic industry.

摘要翻译： 从第一辅助塔（12）中的烃纯化来自低压塔（4）的底部的氧气，并且在该塔顶部的蒸汽在其底部加热的第二辅助塔（17）中蒸馏， 空气中等压力。 在第二辅助塔的底部产生超纯氧。 应用于生产超纯氧为电子工业。

公开(公告)号：US20240353173A1

公开(公告)日：2024-10-24

申请号：US18644654

申请日：2024-04-24

申请人： L'Air Liquide, Societe Anonyme pour l'Etude et l’Exploitation des Procedes Georges Claude

发明人： Kenji HIROSE

IPC分类号： F25J3/04

CPC分类号： F25J3/0443 ,  F25J3/0426 ,  F25J3/04321 ,  F25J3/04781 ,  F25J2200/04 ,  F25J2200/72 ,  F25J2210/50 ,  F25J2215/56 ,  F25J2240/12 ,  F25J2240/20 ,  F25J2270/50

摘要： An ultra-high-purity oxygen production method and apparatus are provide, in which the method can include a step in which feed oxygen comprising low-boiling-point components as impurities is introduced from a warm end of a main heat exchanger and cooled, then introduced into an oxygen rectification column, and product ultra-high-purity oxygen from which the low-boiling-point components have been removed is drawn as a gas or a liquid from a lower portion of the oxygen rectification column.

公开(公告)号：US20230168030A1

公开(公告)日：2023-06-01

申请号：US17995456

申请日：2021-04-06

申请人： Linde GmbH

发明人： Dimitri GOLUBEV

IPC分类号： F25J3/04

CPC分类号： F25J3/04351 ,  F25J3/04315 ,  F25J3/04412 ,  F25J3/04018 ,  F25J3/0403 ,  F25J3/0409 ,  F25J3/04096 ,  F25J3/04145 ,  F25J3/04715 ,  F25J3/04727 ,  F25J3/04878 ,  F25J3/04963 ,  F25J2200/20 ,  F25J2200/06 ,  F25J2200/34 ,  F25J2215/52 ,  F25J2215/56 ,  F25J2235/04 ,  F25J2245/42 ,  F25J2245/50

摘要： The invention relates to a process for cryogenic fractionation of air using an air fractionation plant comprising a rectification column system comprising a high-pressure column operated at a pressure level of 9 to 14.5 bar, a low-pressure column operated at a pressure level of 2 to 5 bar, and an argon column. It is envisaged that a recirculating stream is formed using the second tops gas or a portion thereof, which is heated, compressed, cooled again, and after partial or complete liquefaction or in the unliquefied state is introduced partially or completely, or in fractions, into the first rectification column and/or into the second rectification column. The present invention also relates to a corresponding system.

公开(公告)号：US20170205142A1

公开(公告)日：2017-07-20

申请号：US15397890

申请日：2017-01-04

申请人： Stefan Lochner ,  Ralph Spöri ,  Christian Zimmermann

发明人： Stefan Lochner ,  Ralph Spöri ,  Christian Zimmermann

IPC分类号： F25J3/04

CPC分类号： F25J3/04848 ,  F25J3/04018 ,  F25J3/04048 ,  F25J3/0409 ,  F25J3/04163 ,  F25J3/04284 ,  F25J3/04309 ,  F25J3/04321 ,  F25J3/04381 ,  F25J3/0443 ,  F25J3/04478 ,  F25J3/04484 ,  F25J3/04496 ,  F25J3/04787 ,  F25J3/04872 ,  F25J3/0489 ,  F25J2200/30 ,  F25J2200/94 ,  F25J2215/42 ,  F25J2215/52 ,  F25J2215/56 ,  F25J2220/02 ,  F25J2220/50 ,  F25J2230/08 ,  F25J2230/40 ,  F25J2235/50 ,  F25J2245/02 ,  F25J2250/20 ,  F25J2280/20 ,  F25J2290/12 ,  F25J2290/34 ,  F25J2290/60 ,  F25J2290/62

摘要： A method for obtaining an air product from an air separation plant having a distillation column system and a tank system. The tank system includes a first tank and a second tank. Cryogenic liquid is withdrawn from the distillation column system, stored in the tank system, and used as the air product. The cryogenic liquid is supplied to the first tank and withdrawn from the second tank during a first period, and is supplied to the second tank and withdrawn from the first tank during a second period. The tank system has a third tank to which cryogenic liquid withdrawn from the first tank and the second tank is transferred unheated. The air product is withdrawn from the third tank in liquid state, vaporized and discharged. Alternatively, the cryogenic liquid can be withdrawn from the third tank and stored in the liquid state in a fourth tank.

公开(公告)号：US20090120128A1

公开(公告)日：2009-05-14

申请号：US12257675

申请日：2008-10-24

申请人： Stefan LOCHNER

发明人： Stefan LOCHNER

IPC分类号： F25J3/00

CPC分类号： F25J3/0443 ,  F25J3/04048 ,  F25J3/0409 ,  F25J3/0426 ,  F25J3/04284 ,  F25J2200/90 ,  F25J2215/50 ,  F25J2215/56 ,  F25J2220/50 ,  F25J2245/02 ,  F25J2250/02 ,  F25J2250/20 ,  F25J2290/62

摘要： In low-temperature air fractionation, feed air (8) is cooled in a main heat exchanger (9) and introduced into a distillation column system for nitrogen-oxygen separation (11, 43), which system has at least one single column (12). At least one nitrogen-enriched or oxygen-enriched product stream (15, 16, 17; 53; 51, 56, 57; 19, 60) is withdrawn from the distillation column system for nitrogen-oxygen separation and warmed in the main heat exchanger (9). A fluid from an external source is passed at least at times into a liquid tank (70). At least at times fluid (71) is withdrawn in the liquid state from the liquid tank (70), vaporized in the main heat exchanger (9) and is obtained as gaseous additional product (72, 73).

摘要翻译： 在低温空气分馏中，进料空气（8）在主热交换器（9）中冷却，并引入用于氮 - 氧分离的蒸馏塔系统（11,43），该系统具有至少一个单塔（12 ）。 从蒸馏塔系统中取出至少一个富氮或富氧产物流（15,16,17; 53; 51,56,57; 19,60）以进行氮 - 氧分离，并在主热交换器 （9）。 来自外部源的流体至少有时进入液体罐（70）。 至少有时液体（71）以液体状态从液体罐（70）中排出，在主热交换器（9）中蒸发并作为气体附加产物（72,73）获得。