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1. 发明申请

WO2012136939A3 METHOD AND DEVICE FOR SEPARATING AIR BY CRYOGENIC DISTILLATION 审中-公开
标题翻译：通过低温蒸馏分离空气的方法和装置
公开(公告)号：WO2012136939A3
公开(公告)日：2015-01-22
申请号：PCT/FR2012050742
申请日：2012-04-05
申请人： AIR LIQUIDE , DAVIDIAN BENOIT , DUBETTIER-GRENIER RICHARD , JOLY LOÏC
发明人： DAVIDIAN BENOIT , DUBETTIER-GRENIER RICHARD , JOLY LOÏC
IPC分类号： F25J3/04
CPC分类号： F25J3/04 , F25J3/0406 , F25J3/0409 , F25J3/04181 , F25J3/04206 , F25J3/04224 , F25J3/04254 , F25J3/04309 , F25J3/04351 , F25J3/04418 , F25J3/04454 , F25J3/0486 , F25J2200/34 , F25J2200/54 , F25J2210/42 , F25J2215/52 , F25J2250/40 , F25J2250/50
摘要： The invention relates to a method for separating air by cryogenic distillation in a separation unit including a medium-pressure column (23) and a low-pressure column (25), in which a flow of oxygen-rich liquid is sent to the top of the column of pure oxygen, having a vessel reboiler (61), in which said flow is purified in order to form a vessel liquid containing at least 98 mol % of oxygen and the vessel liquid is drawn off as a product; a supercharged airflow at a second pressure higher than the first pressure is sent to the vessel reboiler of the pure oxygen column and to a liquid oxygen vaporiser (51); a nitrogen-rich gas is drawn from the top of the medium-pressure column; said gas is sent to an intermediate reboiler of the low-pressure column and the condensed gas is sent to the top of the medium-pressure column; and a nitrogen-rich gas or air is sent to a vessel reboiler (36) of the low-pressure column and the liquid that condenses therein is sent to the medium-pressure column.
摘要翻译：本发明涉及一种在包括中压塔（23）和低压塔（25）的分离单元中通过低温蒸馏分离空气的方法，其中富氧液体流被送到所述纯氧塔具有容器再沸器（61），其中所述流被净化以形成含有至少98mol％氧的容器液体，并且将容器液体作为产物抽出; 将高于第一压力的第二压力的增压气流送至纯氧塔的容器再沸器和液氧蒸发器（51）; 从中压塔的顶部抽出富氮气体; 所述气体被送到低压塔的中间再沸器，冷凝的气体被送到中压塔的顶部; 并且将富氮气体或空气送到低压塔的容器再沸器（36），并将其中冷凝的液体送至中压塔。

2. 发明申请

WO2012164220A2 APPARATUS AND INTEGRATED PROCESS FOR SEPARATING A MIXTURE OF CARBON DIOXIDE AND AT LEAST ONE OTHER GAS AND FOR SEPARATING AIR BY CRYOGENIC DISTILLATION 审中-公开
标题翻译：用于分离二氧化碳和至少一种其他气体和用于通过低温蒸馏分离空气的装置和综合方法
公开(公告)号：WO2012164220A2
公开(公告)日：2012-12-06
申请号：PCT/FR2012051203
申请日：2012-05-29
申请人： AIR LIQUIDE , COGNARD MARIE , DARDE ARTHUR , DAVIDIAN BENOIT , DUBETTIER-GRENIER RICHARD , LOCKWOOD FREDERICK , SZAMLEWSKI CHRISTOPHE , TRAVERSAC XAVIER
发明人： COGNARD MARIE , DARDE ARTHUR , DAVIDIAN BENOIT , DUBETTIER-GRENIER RICHARD , LOCKWOOD FREDERICK , SZAMLEWSKI CHRISTOPHE , TRAVERSAC XAVIER
IPC分类号： F25J3/02 , F25J3/04
CPC分类号： F25J3/0204 , B01D53/002 , B01D53/62 , B01D2257/102 , B01D2257/108 , B01D2257/11 , B01D2257/404 , B01D2257/502 , B01D2257/504 , B01D2257/7025 , B01D2258/0283 , B01D2258/06 , F25J3/0223 , F25J3/0252 , F25J3/0266 , F25J3/04157 , F25J3/04533 , F25J3/04563 , F25J2205/32 , F25J2205/34 , F25J2210/70 , F25J2220/82 , F25J2240/80 , F25J2245/02 , F25J2260/44 , F25J2260/80 , F25J2270/90 , Y02C10/04 , Y02C10/12 , Y02C20/20
摘要： An integrated apparatus for separating a mixture of carbon dioxide and at least one other gas and for separating air by air distillation comprises a unit (CPU) for separating a gaseous mixture comprising carbon dioxide and at least one other gas in order to produce a carbon dioxide-enriched gas and a carbon dioxide depleted gas and an air separation unit (ASU) for separating air by cryogenic distillation in order to produce at least one nitrogen-enriched gas stream (17), a water cooling tower that operates by direct contact and also a line for sending water to the top of the tower, a line for sending at least one portion of the nitrogen-enriched gas stream to a lower level of the tower, a cooled water line (15) for withdrawing cooled water from the tower and means for cooling the air (1) upstream of the air separation unit, the cooled water line being connected to means for cooling the air upstream of the air separation unit and to the inlet and/or to the outlet of the unit for separating the gaseous mixture.
摘要翻译：用于分离二氧化碳和至少一种其它气体的混合物并用于通过空气蒸馏分离空气的集成设备包括用于分离包含二氧化碳和至少一种其它气体的气体混合物的单元（CPU），以产生二氧化碳富含二氧化碳的气体和用于通过低温蒸馏分离空气的空气分离单元（ASU），以产生至少一种富氮气流（17），通过直接接触操作的水冷却塔用于将水输送到塔顶部的管线，用于将至少一部分富氮气流输送到塔的下层的管线，用于从塔抽出冷却水的冷却水管线（15），以及用于冷却空气分离单元上游的空气（1）的装置，冷却的水管线连接到用于冷却空气分离单元上游的空气以及用于分离的单元的入口和/或出口的装置混合气体。

3. 发明申请

WO2012127148A3 DEVICE AND METHOD FOR SEPARATING AIR BY CRYOGENIC DISTILLATION 审中-公开
标题翻译：通过低温蒸馏分离空气的装置和方法
公开(公告)号：WO2012127148A3
公开(公告)日：2014-12-04
申请号：PCT/FR2012050500
申请日：2012-03-09
申请人： AIR LIQUIDE , COGNARD MARIE , DAVIDIAN BENOIT , DUBETTIER-GRENIER RICHARD
发明人： COGNARD MARIE , DAVIDIAN BENOIT , DUBETTIER-GRENIER RICHARD
IPC分类号： F25J3/04
CPC分类号： F25J3/0228 , F25J3/0409 , F25J3/04103 , F25J3/04206 , F25J3/04218 , F25J3/04303 , F25J3/04412 , F25J3/04418 , F25J3/04824 , F25J3/04836 , F25J3/0486 , F25J2200/54 , F25J2215/50 , F25J2250/40 , F25J2250/50 , F25J2290/62
摘要： Device for separating air comprises a pipe for withdrawing liquid oxygen from the low-pressure column and for sending it to a first pump (39), a pipe for sending liquid oxygen that has been pressurized to a pressure of below 9 bar abs from the first pump to a vaporizer (41), a pipe for sending gaseous oxygen from the vaporizer to a main exchanger (21) where it is heated up, a pipe for sending liquid oxygen for purging from the vaporizer to a second pump (63) to pressurize it and a pipe for sending the pressurized oxygen from the second pump to an exchanger where it vaporizes to form gaseous oxygen.
摘要翻译：用于分离空气的装置包括用于从低压塔排出液态氧并将其送到第一泵（39）的管道，用于将已经被加压至低于9巴绝对压力的液氧的管从第一泵泵送到蒸发器（41），用于将气态氧从蒸发器送到其被加热的主交换器（21）的管道，用于将液体氧气从蒸发器排出到第二泵（63）以加压的管它和用于将加压氧气从第二泵送到其中蒸发以形成气态氧气的交换器的管道。

4. 发明申请

WO2010109149A3 APPARATUS AND METHOD FOR SEPARATING AIR BY CRYOGENIC DISTILLATION 审中-公开
标题翻译：通过低温蒸馏分离空气的装置和方法
公开(公告)号：WO2010109149A3
公开(公告)日：2011-09-15
申请号：PCT/FR2010050550
申请日：2010-03-25
申请人： AIR LIQUIDE , COGNARD MARIE , DUBETTIER-GRENIER RICHARD , LEMANT FRANCOIS-XAVIER
发明人： COGNARD MARIE , DUBETTIER-GRENIER RICHARD , LEMANT FRANCOIS-XAVIER
IPC分类号： F25J3/04 , F04D17/02
CPC分类号： F25J3/0486 , F04D25/04 , F04D25/06 , F25J3/04018 , F25J3/04024 , F25J3/0409 , F25J3/04133 , F25J3/04145 , F25J3/04206 , F25J3/04303 , F25J3/04418 , F25J3/04878 , F25J2250/40 , F25J2250/50
摘要： The invention relates to equipment for separating air, including a double column including a medium pressure column (27) and a low pressure column (29), a main exchanger (21), a main compressor (4), and a means (39, 41) for producing gaseous oxygen at a pressure of less than 5 bar abs, a means for sending all the air to be processed in the double column to an axial portion (3) of the main compressor for producing air that is substantially at the pressure P1 of the medium pressure column, a means for sending part of the air substantially at the pressure of the medium pressure column to a second radial or centrifugal portion (5) of the main compressor to bring the air up to a high pressure P2, a means for sending the high pressure air to the main exchanger and then optionally to a vaporizer (41), the first portion and the second portion of the compressor being on the same shaft, in the same frame, and driven by the same driving means (M).
摘要翻译：本发明涉及用于分离空气的设备，包括一个包括中压塔（27）和一个低压塔（29）的双塔，一个主交换器（21），一个主压缩机（4） 41），用于在小于5巴绝压的压力下产生气态氧，用于将所述待处理的空气全部送到主压缩机的轴向部分（3）的装置，用于产生基本处于压力中压塔的P1，用于将基本上处于中压塔的压力的一部分空气送到主压缩机的第二径向或离心部分（5）的装置，以使空气达到高压P2，用于将高压空气发送到主交换器然后可选地到达蒸发器（41）的装置，压缩机的第一部分和第二部分在相同的框架中在相同的轴上，并由相同的驱动装置 M）。

5. 发明申请

WO2007099246A2 METHOD OF INTEGRATING A BLAST FURNACE WITH AN AIR GAS SEPARATION UNIT 审中-公开
标题翻译：用气体分离单元整合一个高炉的方法
公开(公告)号：WO2007099246A2
公开(公告)日：2007-09-07
申请号：PCT/FR2007050804
申请日：2007-02-15
申请人： AIR LIQUIDE , DEVAUX MICHEL , DUBETTIER-GRENIER RICHARD
发明人： DEVAUX MICHEL , DUBETTIER-GRENIER RICHARD
IPC分类号： C21B5/00 , F25J3/04
CPC分类号： F25J3/04969 , C21B5/00 , F25J3/04557 , F25J3/046 , F25J3/04606 , F25J3/04781 , F25J3/04812 , F25J3/04824 , F25J3/04957 , F25J2230/24 , F25J2230/40
摘要： The invention relates to a method of integrating a plurality of blast furnaces with a plurality of air gas separation units, in which the replacement blower available on the blast furnace site is used to feed compressed air into an air gas separation unit making it possible to enrich the blast-furnace blast with oxygen, this unit being stopped when one of the blowers of the blast furnaces has to be replaced with the blower used by the air gas separation unit.
摘要翻译：本发明涉及一种将多个高炉与多个气体分离单元整合的方法，其中高炉位置可用的更换鼓风机用于将压缩空气送入空气气体分离单元，使得可以富集具有氧气的高炉爆炸，当高炉的鼓风机中的一个必须用气体分离单元使用的鼓风机代替时，该单元停止。

6. 发明申请

WO2010142894A2 APPARATUS AND METHOD FOR SEPARATING AIR BY CRYOGENIC DISTILLATION 审中-公开
标题翻译：通过低温蒸馏分离空气的装置和方法
公开(公告)号：WO2010142894A2
公开(公告)日：2010-12-16
申请号：PCT/FR2010051101
申请日：2010-06-04
申请人： AIR LIQUIDE , DUBETTIER-GRENIER RICHARD , COGNARD MARIE
发明人： DUBETTIER-GRENIER RICHARD , COGNARD MARIE
IPC分类号： F25J3/04
CPC分类号： F25J3/04206 , F25J3/0409 , F25J3/04418 , F25J3/04878 , F25J3/04884 , F25J3/04915 , F25J2200/34 , F25J2200/54 , F25J2235/50 , F25J2250/02 , F25J2250/04
摘要： The invention relates to equipment for separating air that includes a first average pressure distillation column (1), a second low-pressure distillation column (2), a third low-pressure distillation column (3), a first condenser-vaporizer (9, 9A), a second condenser-vaporizer (5) arranged in the tank of the second column, a pipe (33) for supplying air to the first column, a pipe (35) for supplying a nitrogen-enriched liquid from the head of the first column to the head of the third column, at least one pipe (23) for supplying the liquid from the tank of the third column to the first condenser-vaporizer, a pipe (25) for supplying a liquid of the tank from the first column to the third column, a pipe (21) for supplying the liquid from the first condenser-vaporizer to the second column, a pipe (15, 19) for supplying gas from the head of the second column to the tank of the third column, wherein the first, second, and third columns are arranged side by side.
摘要翻译：本发明涉及用于分离空气的设备，其包括第一平均压力蒸馏塔（1），第二低压蒸馏塔（2），第三低压蒸馏塔（3），第一冷凝器蒸发器（9， 9A），布置在第二塔的罐中的第二冷凝器 - 蒸发器（5），用于向第一塔供应空气的管（33），用于从第一塔的头部供应富氮液体的管（35）用于将液体从第三塔的罐供给到第一冷凝器蒸发器的至少一个管道（23），用于从第一塔的第一塔提供液体的管道（25）将第一冷凝器蒸发器的液体供给到第二塔的管道（21），用于将第二塔的头部的气体供给到第三塔的罐的管道（15,19），其中所述第一，第二和第三列并排排列。

7. 发明申请

WO2011030050A2 METHOD AND FACILITY FOR PRODUCING OXYGEN THROUGH AIR DISTILLATION 审中-公开
标题翻译：通过空气净化生产氧气的方法和设备
公开(公告)号：WO2011030050A2
公开(公告)日：2011-03-17
申请号：PCT/FR2010051854
申请日：2010-09-07
申请人： AIR LIQUIDE , COGNARD MARIE , DUBETTIER-GRENIER RICHARD
发明人： COGNARD MARIE , DUBETTIER-GRENIER RICHARD
IPC分类号： F25J3/04
CPC分类号： F25J3/04169 , F25J3/04018 , F25J3/0409 , F25J3/04121 , F25J3/04133 , F25J3/04145 , F25J3/04206 , F25J3/04296 , F25J3/04309 , F25J3/04412 , F25J3/04533 , F25J3/04557 , F25J3/04618 , F25J3/04957 , F25J2205/62 , F25J2230/06 , F25J2230/24 , F25J2230/40 , F25J2250/40 , F25J2250/42
摘要： In a method for producing oxygen through the distillation of air supplied by air at atmospheric pressure so as to produce a first and second compressed air flow, and through a first purification unit (5) and a second purification unit (7), the first and second compressed air flows being discharged from the compression means at a first and second pressure, the first and second pressures being different pressures of at least 0.5 bar: the first compressed air flow is sent from a first outlet of the compression means to the first purifying unit at the first pressure so as to produce a first purified air flow; the first purified air flow is sent from the first purifying unit to a column of the column system (15); the second purified air flow is sent, in an at least partially condensed form, from the second purifying unit to a column of the column system; an oxygen-rich liquid is bled off from the column system; said oxygen-rich liquid is vaporized through heat exchange with at least the second purified air flow; and said oxygen-rich liquid is provided as a material.
摘要翻译：在通过蒸馏由大气压下的空气供给的空气以产生第一和第二压缩空气流而产生氧气的方法中，通过第一净化单元（5）和第二净化单元（7），第一和第二净化单元第二压缩空气流在第一和第二压力下从压缩装置排出，第一和第二压力是至少0.5巴的不同压力：第一压缩空气流从压缩装置的第一出口被送至第一净化在第一压力下单元以产生第一净化空气流; 第一净化空气流从第一净化单元输送到塔系统（15）的塔中; 第二净化空气流以至少部分冷凝的形式从第二净化单元输送到塔系统的塔; 从柱系统中排出富氧液体; 所述富氧液体通过与至少第二净化空气流的热交换而蒸发; 并且提供所述富氧液体作为材料。

8. 发明申请

WO2007068858A2 PROCESS FOR SEPARATING AIR BY CRYOGENIC DISTILLATION 审中-公开
标题翻译：通过低温蒸馏分离空气的过程
公开(公告)号：WO2007068858A2
公开(公告)日：2007-06-21
申请号：PCT/FR2006051350
申请日：2006-12-14
申请人： AIR LIQUIDE , DE CAYEUX OLIVIER , DUBETTIER-GRENIER RICHARD , GUILLARD ALAIN , LE BOT PATRICK
发明人： DE CAYEUX OLIVIER , DUBETTIER-GRENIER RICHARD , GUILLARD ALAIN , LE BOT PATRICK
CPC分类号： F25J3/04393 , C01B13/0248 , C01B2210/0046 , C01B2210/0051 , C01B2210/0062 , C01B2210/0082 , F25J3/04054 , F25J3/0409 , F25J3/04175 , F25J3/0429 , F25J3/04296 , F25J3/04303 , F25J3/04412 , F25J3/04466 , F25J3/04781 , F25J3/04812 , F25J3/04824 , F25J3/04951 , F25J3/04957 , F25J2200/06 , F25J2200/94 , F25J2215/52 , F25J2215/54 , F25J2230/24 , F25J2230/40 , F25J2240/04 , F25J2245/40
摘要： According to a first step in an air separation unit, all the air intended for distillation is compressed in a main compressor (1), a first stream of air, compressed in at least the main compressor, purified and cooled in a heat exchange line (6), is sent to the medium-pressure column (8) of a double column, said stream of air is divided into a nitrogen-enriched stream and an oxygen-enriched stream in the medium-pressure column, a liquid oxygen stream (16) is withdrawn from the low-pressure column, said stream is pressurized up to a high pressure and vaporized in the heat exchange line in order to form a first high-pressure oxygen-rich gas stream, at least one portion (24) of the air compressed in the main compressor is liquefied and the liquefied portion is sent to the double column, and a second oxygen-rich gas stream (115) is also produced, but at a lower pressure than the first oxygen-rich gas stream, and, in a second step, the air liquefaction pressure is increased by adjusting the blades of the main compressor (1), which set this pressure, the production of the second oxygen-rich gas stream is reduced, and the withdrawal of the first oxygen-rich gas stream is increased.
摘要翻译：根据空气分离装置中的第一步骤，所有用于蒸馏的空气在主压缩机（1）中被压缩，第一空气流至少在主压缩机中被压缩，在热交换线路中净化并冷却（ 6）送入双塔的中压塔（8），所述空气流在中压塔中被分成富氮气流和富氧气流，液氧流（16 ）从低压塔中排出，所述物流被加压至高压并在热交换管线中汽化，以形成第一高压富氧气流，所述第一高压富氧气流的至少一部分（24）在主压缩机中被压缩的空气被液化并且液化部分被输送到双塔，并且还产生第二富氧气流（115），但是在比第一富氧气流低的压力下，在第二步中，通过调节空气液化压力主压缩机（1）的设定该压力的叶片减少了第二富氧气流的产生，并且增加了第一富氧气流的排出。

9. 发明申请

WO2011110775A3 METHOD AND INTEGRATED DEVICE FOR SEPARATING AIR AND HEATING A GAS IN AIR ORIGINATING FROM AN AIR SEPARATION DEVICE 审中-公开
标题翻译：用于分离空气和加热空气分离装置中的气体的方法和集成装置
公开(公告)号：WO2011110775A3
公开(公告)日：2015-07-09
申请号：PCT/FR2011050445
申请日：2011-03-03
申请人： L AIR LIQUIDE SOCIÉTÉ ANONYME POUR L ETUDE ET L EXPL DES PROCÉDÉS GEORGES CLAUDE , DUBETTIER-GRENIER RICHARD , TRANIER JEAN-PIERRE
发明人： DUBETTIER-GRENIER RICHARD , TRANIER JEAN-PIERRE
IPC分类号： F25J3/04
CPC分类号： F25J3/04533 , F25J3/04018 , F25J3/04066 , F25J3/04157 , F25J3/04181 , F25J3/04521 , F25J3/04545 , F25J3/04612 , F25J3/04618 , F25J2205/70 , F25J2210/06 , F25J2230/06 , F25J2240/70 , F25J2260/02
摘要： The invention relates to an integrated device for separating air and heating a gas in the air resulting from said air separation, comprising: an air separation device (9); a heat exchanger (13, 43); a channel for conveying the gas in the air to the heat exchanger; and a channel for conveying water to the heat exchanger, the water-conveying channel being connected to the water inlet or water outlet of a water preheat exchanger (5) or a water deaerator (27). According to the invention, the preheat exchanger and/or the deaerator are connected to an oxy-combustion boiler (19) in order to convey water to and from the boiler, said boiler also being connected to the separation device in order to receive an oxygen-enriched gas (17).
摘要翻译：本发明涉及一种用于分离空气并加热由所述空气分离产生的空气中的气体的集成装置，包括：空气分离装置（9）; 热交换器（13,43）; 用于将空气中的气体输送到热交换器的通道; 以及用于将水输送到热交换器的通道，所述输水通道连接到水预热换热器（5）或除水器（27）的进水口或出水口。根据本发明，预热交换器和/或除氧器连接到氧化燃烧锅炉（19），以便将水输送到锅炉和从锅炉传送水，所述锅炉还连接到分离装置以接收氧气富含气体（17）。

10. 发明申请

WO2011157431A2 AIR SEPARATION PLANT AND PROCESS OPERATING BY CRYOGENIC DISTILLATION 审中-公开
标题翻译：空气分离装置和通过低温蒸馏操作的方法
公开(公告)号：WO2011157431A2
公开(公告)日：2011-12-22
申请号：PCT/EP2011002996
申请日：2011-06-17
申请人： AIR LIQUIDE , DUBETTIER-GRENIER RICHARD , GUILLARD ALAIN
发明人： DUBETTIER-GRENIER RICHARD , GUILLARD ALAIN
IPC分类号： F25J3/04
CPC分类号： F25J3/00 , F25J3/04018 , F25J3/0409 , F25J3/04121 , F25J3/04133 , F25J3/04169 , F25J3/04206 , F25J3/04418 , F25J3/04781 , F25J3/04812 , F25J3/04824 , F25J3/04957 , F25J2200/54 , F25J2205/62 , F25J2230/24 , F25J2230/40 , F25J2240/42 , F25J2245/40 , F25J2250/40 , F25J2250/50
摘要： An air separation plant comprises at least two air compressors (1, 3A, 3B) receiving air at substantially atmospheric pressure, at least two air purification units (5A, 5B, 5C) and one or more cold boxes (25, 27), at least one compressor being connected to each of the purification units so as to send compressed air thereto, the purification units being connected to the cold box or boxes, a first compressor (1) being designed to produce air at a first pressure and to send the air at the first pressure to a first purification unit (5A), the first purification unit being connected to one or more high-pressure air lines (21, 23) of the or the first cold box, a second compressor (3B, 3C) being designed to produce air at a second pressure and to send all the air at the second pressure to a second purification unit (5B, 5C), and the second purification unit being connected to one or more medium-pressure air lines (17, 19) of the or the first cold box, a means (28) for modifying the operation of the second compressor in order to increase the pressure of the air produced to a pressure above the second pressure, the second pressure being below the first pressure, and the delivery side of the second compressor being connected to the high-pressure air line or lines of the or the first cold box through the second purification unit so as to send air there to at the pressure above the second pressure.
摘要翻译：空气分离装置包括至少两个以大致压力接收空气的空气压缩机（1,3A，3B），至少两个空气净化单元（5A，5B，5C）和一个或多个冷箱（25,27）至少一个压缩机连接到每个净化单元以便向其中发送压缩空气，净化单元连接到冷箱或箱，第一压缩机（1）被设计成在第一压力下产生空气并且将将第一压力的空气送到第一净化单元（5A），第一净化单元连接到第一冷箱的一个或多个高压空气管路（21,23），第二压缩机（3B，3C）被设计成在第二压力下产生空气并将所有第二压力的空气送到第二净化单元（5B，5C），并且第二净化单元连接到一个或多个中压空气管线（17,19））或用于修改操作的装置（28）以便将产生的空气的压力增加到高于第二压力的压力，第二压力低于第一压力，并且第二压缩机的输出侧连接到高压空气管线或管线或第一冷箱通过第二净化单元以在高于第二压力的压力下将空气送到那里。

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