公开(公告)号：EP2713128A1

公开(公告)日：2014-04-02

申请号：EP12306195.4

申请日：2012-10-01

申请人： L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE

发明人： Davidian, Benoit ,  Dubettier-Grenier, Richard ,  Peyron, Jean-Marc ,  Saulnier, Bernard

IPC分类号： F25J3/04

CPC分类号： F25J3/04175 ,  F25J1/0015 ,  F25J1/0037 ,  F25J1/004 ,  F25J1/0202 ,  F25J1/0234 ,  F25J3/04054 ,  F25J3/0406 ,  F25J3/04084 ,  F25J3/0409 ,  F25J3/04224 ,  F25J3/04315 ,  F25J3/04357 ,  F25J3/04393 ,  F25J3/04412 ,  F25J3/04448 ,  F25J3/04496 ,  F25J2200/20 ,  F25J2270/06 ,  F25J2290/12

摘要： A process for the separation of air by cryogenic distillation operates either with a product ratio greater than 2.5 in which case nitrogen enriched liquid is sent from a storage tank (27) to the column system and feed air or nitrogen enriched gas (29) from the column system is compressed in a first compressor (33) having an inlet temperature of less than -50°C and then sent to the heat exchanger, or with a product ratio less than 2.5 in which case a second nitrogen rich gas removed from the column system is expanded in a turbine (73) having an inlet temperature lower than the ambient temperature or liquefied in a liquefier and nitrogen enriched liquid (57) is sent to the storage tank from the outlet of the turbine and/or from the column system and/or from the liquefier.

摘要翻译： 通过低温蒸馏分离空气的方法可以以大于2.5的产物比例进行操作，在这种情况下，富氮液体从储罐（27）输送到塔系统，并从空气或富氮气体（29）进料 柱系统在入口温度低于-50℃的第一压缩机（33）中被压缩，然后被送入热交换器，或者以小于2.5的产物比率输送，在这种情况下，从塔中除去第二富氮气体 系统在具有低于环境温度的入口温度或在液化器中液化的涡轮机（73）中膨胀，并且富氮液体（57）从涡轮机的出口和/或从​​塔系统和 /或来自液化器。

公开(公告)号：EP2598815A2

公开(公告)日：2013-06-05

申请号：EP10737899.4

申请日：2010-07-28

申请人： Air Products and Chemicals, Inc.

发明人： HIGGINBOTHAM, Paul ,  TOPHAM, Anthony, Knut, James ,  TAPSFIELD, Kevin, David, Thomas ,  ROSSMAN, John, Crawford

IPC分类号： F25J1/00

CPC分类号： F25J1/0012 ,  F25J1/0005 ,  F25J1/0007 ,  F25J1/001 ,  F25J1/0015 ,  F25J1/0017 ,  F25J1/002 ,  F25J1/0022 ,  F25J1/0027 ,  F25J1/0035 ,  F25J1/0037 ,  F25J1/004 ,  F25J1/0202 ,  F25J1/0234 ,  F25J1/0254 ,  F25J1/0288 ,  F25J3/04224 ,  F25J3/04357 ,  F25J3/04393 ,  F25J2215/14 ,  F25J2215/32 ,  F25J2215/62 ,  F25J2245/90 ,  F25J2270/06 ,  F25J2290/62

摘要： A system and process for liquefying a gas, comprising introducing a feed stream into a liquefier comprising at least a warm expander and a cold expander; compressing the feed stream in the liquefier to a pressure greater than its critical pressure and cooling the compressed feed stream to a temperature below its critical temperature to form a high pressure dense-phase stream; removing the high pressure dense-phase stream from the liquefier, reducing the pressure of the high pressure dense-phase stream in an expansion device to form a resultant two-phase stream and then directly introducing the resultant two-phase stream into a storage tank; and combining a flash portion of the resultant two-phase stream with a boil-off vapor from a liquid in the storage tank to form a combined vapor stream, wherein the temperature of the high pressure dense-phase stream is lower than the temperature of a discharge stream of the cold expander.

公开(公告)号：EP2307835B1

公开(公告)日：2012-03-07

申请号：EP09773952.8

申请日：2009-05-12

申请人： Praxair Technology, Inc.

发明人： PARSNICK, David, Ross ,  SKARE, Todd, Alan

IPC分类号： F25J3/04

CPC分类号： F25J3/0489 ,  F25J3/04224 ,  F25J3/04345 ,  F25J3/04351 ,  F25J3/04357 ,  F25J3/04393 ,  F25J3/04412 ,  F25J3/04678 ,  F25J3/04703 ,  F25J3/04715 ,  F25J3/04969 ,  F25J2200/34 ,  F25J2215/56 ,  F25J2290/10

摘要： A method is disclosed for increasing liquid production involving retrofitting an existing air separation plant with a nitrogen liquefier. The nitrogen liquefier liquefies a nitrogen-rich vapor stream (130) withdrawn from the higher pressure column (44) to return a nitrogen-rich liquid stream (132) to the higher pressure column. This increases liquid nitrogen reflux to the higher pressure column to in turn increase the production of liquid oxygen containing column bottoms of the higher pressure column and therefore, the production of oxygen-rich liquid (96) in the lower pressure column (46). The increased production of the oxygen-rich liquid allows a liquid oxygen product to be taken at an increased rate or for the liquid oxygen product to be taken in the first instance, if the plant is not designed to produce such a product. Also liquid nitrogen and argon products can be produced at an increased rate as a result of the retrofit.

公开(公告)号：EP2331899A2

公开(公告)日：2011-06-15

申请号：EP09789851.4

申请日：2009-06-19

申请人： Praxair Technology, Inc.

发明人： HOWARD, Henry, Edward

IPC分类号： F25J3/04

CPC分类号： F25J1/0234 ,  F25J1/0015 ,  F25J1/0037 ,  F25J1/004 ,  F25J1/0202 ,  F25J3/0409 ,  F25J3/04224 ,  F25J3/04254 ,  F25J3/04296 ,  F25J3/04357 ,  F25J3/04393 ,  F25J3/04412 ,  F25J3/04963 ,  F25J2210/42 ,  F25J2270/06

摘要： A method of supplying refrigeration to air separation plants within an air separation plant facility in which a refrigerant stream is produced at cryogenic temperature within a centralized refrigeration system. Streams of the refrigerant at the cryogenic temperature are introduced into the air separation plants such that all or a part of the refrigeration requirements of the air separation plants are supplied by the streams of the refrigerant.

摘要翻译： 一种向空气分离设备设备内的空气分离设备供应制冷的方法，其中在集中制冷系统内制冷剂流在低温下产生。 低温下的制冷剂流被引入空气分离装置，使得空气分离装置的全部或部分制冷要求由制冷剂流提供。

公开(公告)号：EP2307835A2

公开(公告)日：2011-04-13

申请号：EP09773952.8

申请日：2009-05-12

申请人： Praxair Technology, Inc.

发明人： PARSNICK, David, Ross ,  SKARE, Todd, Alan

IPC分类号： F25J3/04

CPC分类号： F25J3/0489 ,  F25J3/04224 ,  F25J3/04345 ,  F25J3/04351 ,  F25J3/04357 ,  F25J3/04393 ,  F25J3/04412 ,  F25J3/04678 ,  F25J3/04703 ,  F25J3/04715 ,  F25J3/04969 ,  F25J2200/34 ,  F25J2215/56 ,  F25J2290/10

摘要： A method is disclosed for increasing liquid production involving retrofitting an existing air separation plant with a nitrogen liquefier. The nitrogen liquefier liquefies a nitrogen-rich vapor stream (130) withdrawn from the higher pressure column (44) to return a nitrogen-rich liquid stream (132) to the higher pressure column. This increases liquid nitrogen reflux to the higher pressure column to in turn increase the production of liquid oxygen containing column bottoms of the higher pressure column and therefore, the production of oxygen-rich liquid (96) in the lower pressure column (46). The increased production of the oxygen-rich liquid allows a liquid oxygen product to be taken at an increased rate or for the liquid oxygen product to be taken in the first instance, if the plant is not designed to produce such a product. Also liquid nitrogen and argon products can be produced at an increased rate as a result of the retrofit.

摘要翻译： 公开了一种用于增加液体产量的方法，涉及用氮气液化器对现有的空气分离设备进行改造。 氮液化器液化从高压塔（44）排出的富氮蒸气流（130）以将富氮液体流（132）返回到高压塔。 这增加了向高压塔的液氮回流，从而增加了高压塔的液态含氧塔底产物的产量，并由此增加了在低压塔（46）中产生富氧液体（96）。 如果工厂没有设计生产这样的产品，富氧液体的增加的生产允许以增加的速率提取液氧产品或首先提取液氧产品。 由于改造，液氮和氩产品也可以以更高的速度生产。

公开(公告)号：EP1544560A1

公开(公告)日：2005-06-22

申请号：EP04029742.6

申请日：2004-12-15

申请人： Linde BOC Process Plants LLC

发明人： Musicus, Paul

IPC分类号： F25J3/04 ,  F25J3/08

CPC分类号： F25J3/04357 ,  F25J3/04224 ,  F25J3/04236 ,  F25J3/04393 ,  F25J3/08 ,  F25J2200/02 ,  F25J2200/76 ,  F25J2215/04 ,  F25J2215/44 ,  F25J2220/44 ,  F25J2270/06 ,  F25J2270/08 ,  F25J2270/42 ,  F25J2290/34

摘要： The process and the apparatus serve for producing high-purity liquid nitrogen from an impure nitrogen feed stream. The process comprises the following steps:

introducing the feed stream (1, 3) into a single distillation column (4),
withdrawing a high-purity gaseous nitrogen stream (5) from the single distillation column (4),
compressing at least a part of the high-purity gaseous nitrogen stream in a recycle compressor (8) of a nitrogen recycle system to produce a high-pressure recycle stream (10),
work expanding (19, 36) at least a first portion (18, 35) of the high-pressure recycle stream (10) to produce a first low-pressure recycle stream (20, 37),
recycling (7) at least a portion (23, 37) of the first low-pressure recycle stream to the recycle compressor (8),
liquefying a second portion of the high-pressure recycle stream to produce a liquid recycle stream (28), and
recovering at least a first portion (29) of the second low-pressure recycle stream (28) as liquid nitrogen product stream (31).

摘要翻译： 该方法和设备用于从不纯的氮气进料流产生高纯度液氮。 该方法包括以下步骤：将进料流（1,3）引入单个蒸馏塔（4）中，从单一蒸馏塔（4）中取出高纯度气态氮气流（5），将至少一部分 在氮循环系统的再循环压缩机（8）中的高纯度气态氮气流，以产生高压循环流（10），工作膨胀（19,36）至少第一部分（18,35）为 所述高压循环流（10）以产生第一低压循环流（20,37），将所述第一低压循环流的至少一部分（23,37）再循环（7）到所述循环压缩机 液化高压再循环料流的第二部分以产生液体循环物流（28），并回收第二低压循环物流（28）的至少第一部分（29）作为液氮产物流 （31）。

公开(公告)号：EP0618415B1

公开(公告)日：1999-09-29

申请号：EP94400454.8

申请日：1994-03-03

申请人： L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE

发明人： Darredeau, Bernard ,  Garnier, Catherine ,  Guillard, Alain ,  Fraysse, Philippe ,  Lehman, Jean-Yves ,  Rieth, Norbert

IPC分类号： F25J3/04

CPC分类号： F25J3/04393 ,  F25J3/0409 ,  F25J3/04157 ,  F25J3/04175 ,  F25J3/04278 ,  F25J3/04296 ,  F25J3/04345 ,  F25J3/04357 ,  F25J3/04412 ,  F25J2205/02 ,  F25J2210/04 ,  F25J2245/02 ,  F25J2245/40 ,  F25J2270/90 ,  Y02P80/156

公开(公告)号：EP0842385A1

公开(公告)日：1998-05-20

申请号：EP96927545.0

申请日：1996-07-18

申请人： Linde Aktiengesellschaft

发明人： CORDUAN, Horst ,  ALTMEYER, Horst

IPC分类号： F25J3

CPC分类号： F25J3/04103 ,  F25J3/0409 ,  F25J3/04224 ,  F25J3/04309 ,  F25J3/04357 ,  F25J3/04393 ,  F25J3/04412 ,  F25J3/04509 ,  F25J2205/02 ,  Y10S62/913

摘要： In the method proposed, charge air is fed to a cryogenic rectifying system (15, 16) where it is split up into its constituent gases, and a liquid fraction (31, 32) is taken off and passed into a first storage tank (33). The pressure of any suitable amount of the liquid fraction (34) is increased (35). The liquid fraction (36) is then evaporated under the increased pressure by indirect heat exchange (12) and converted into a pressurized gaseous product (37). A heat-transfer fluid circulates in a refrigeration circuit fitted with a compressor (41, 42). Part (45) of the flow of heat-transfer fluid (44) compressed in the compressor (41, 42) is fed to the indirect heat-exchange unit (12) where the liquid fraction (36) is evaporated and the heat-transfer fluid (44) at least partly liquefied. Another part (59) of the flow of heat-transfer fluid (44) compressed in the compressor (41, 42) is allowed to expand (43), doing useful work. Liquefied heat-transfer fluid (45, 48) is stored in a buffer storage tank (49).

公开(公告)号：EP0589766B1

公开(公告)日：1997-02-12

申请号：EP93402287.2

申请日：1993-09-20

申请人： L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE

发明人： Nagamura, Takashi, Harima Factory of Teisan K.K. ,  Yamamoto, Takao, Harima Factory of Teisan K.K. ,  Tomita, Shinji, Harima Factory of Teisan K.K.

IPC分类号： F25J3/04 ,  F25J3/08

CPC分类号： F25J3/04642 ,  F25J3/04157 ,  F25J3/04254 ,  F25J3/04284 ,  F25J3/04357 ,  F25J3/04636 ,  F25J2200/04 ,  F25J2200/54 ,  F25J2205/02 ,  F25J2205/60 ,  F25J2205/82 ,  F25J2205/84 ,  F25J2210/42 ,  F25J2215/30 ,  F25J2215/44 ,  F25J2220/42 ,  F25J2220/44 ,  F25J2230/42 ,  F25J2245/42 ,  F25J2250/02 ,  F25J2270/90

公开(公告)号：EP0589766A1

公开(公告)日：1994-03-30

申请号：EP93402287.2

申请日：1993-09-20

申请人： L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE

发明人： Nagamura, Takashi, Harima Factory of Teisan K.K. ,  Yamamoto, Takao, Harima Factory of Teisan K.K. ,  Tomita, Shinji, Harima Factory of Teisan K.K.

IPC分类号： F25J3/04 ,  F25J3/08

CPC分类号： F25J3/04642 ,  F25J3/04157 ,  F25J3/04254 ,  F25J3/04284 ,  F25J3/04357 ,  F25J3/04636 ,  F25J2200/04 ,  F25J2200/54 ,  F25J2205/02 ,  F25J2205/60 ,  F25J2205/82 ,  F25J2205/84 ,  F25J2210/42 ,  F25J2215/30 ,  F25J2215/44 ,  F25J2220/42 ,  F25J2220/44 ,  F25J2230/42 ,  F25J2245/42 ,  F25J2250/02 ,  F25J2270/90

摘要： An ultra-high purity nitrogen generating method comprises: feeding feed air to a carbon dioxide eliminator-drier (4) and a primary rectification column (6), thereby removing catalyst poisons for an oxidation catalyst used for oxidation of carbon monoxide and hydrogen in the feed air by means of the carbon dioxide eliminator-drier (4) and the primary rectification column (6), condensing and liquefying a part of low purity nitrogen gas separated in the primary rectification column (6) by means of a condenser (7), warming the raw nitrogen gas which has not been condensed and liquefied in the condenser to normal temperature by means of a heat exchanger (5) and compressing it by a recycle compressor (9) so that the pressure thereof is increased and the temperature thereof is raised, oxidizing carbon monoxide and hydrogen in an oxidation column (10) and removing the resulting carbon dioxide and water by an adsorption column (12).

摘要翻译： 超高纯度氮气生成方法包括：将进料空气送入二氧化碳除去器（4）和一次精馏塔（6），从而除去用于氧化一氧化碳和氢气的氧化催化剂的催化剂毒物 通过二氧化碳清除器（4）和一次精馏塔（6）进料空气，通过冷凝器（7）冷凝和液化在一次精馏塔（6）中分离的一部分低纯度氮气， 通过热交换器（5）将在冷凝器中未冷凝和液化的原始氮气加热至常温，并通过再循环压缩机（9）压缩，使其压力升高，其温度为 在氧化塔（10）中升高氧化一氧化碳和氢气，并通过吸附塔（12）除去所得到的二氧化碳和水。