US3339370A - Process for the separation of nitrogen and oxygen from air by fractional distillation - Google Patents

Process for the separation of nitrogen and oxygen from air by fractional distillation Download PDF

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US3339370A
US3339370A US37597964A US3339370A US 3339370 A US3339370 A US 3339370A US 37597964 A US37597964 A US 37597964A US 3339370 A US3339370 A US 3339370A
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nitrogen
air
heat exchanger
conduit
oxygen
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Martin F M R Streich
Tutton Ralph Charles
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Conch International Methane Ltd
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Conch International Methane Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04254—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using the cold stored in external cryogenic fluids
    • F25J3/0426—The cryogenic component does not participate in the fractionation
    • F25J3/04266—The cryogenic component does not participate in the fractionation and being liquefied hydrocarbons
    • F25J3/04272—The cryogenic component does not participate in the fractionation and being liquefied hydrocarbons and comprising means for reducing the risk of pollution of hydrocarbons into the air fractionation
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    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • F17C9/04—Recovery of thermal energy
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    • F25J3/0406—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams of nitrogen
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    • F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of oxygen
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    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/62—Liquefied natural gas [LNG]; Natural gas liquids [NGL]; Liquefied petroleum gas [LPG]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/02—Compressor intake arrangement, e.g. filtering or cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/08—Cold compressor, i.e. suction of the gas at cryogenic temperature and generally without afterstage-cooler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/12—External refrigeration with liquid vaporising loop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/42—Quasi-closed internal or closed external nitrogen refrigeration cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2270/00—Refrigeration techniques used
    • F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
    • F25J2270/904—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration by liquid or gaseous cryogen in an open loop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00—Refrigeration
    • Y10S62/912—External refrigeration system

Definitions

  • This invention provides -a process for the sepa-ration of nitrogen and oxygen from air by fractional distillatlon, first at a higher pressure and then at a lower pressure, in which gaseous nitrogen separated in a lower .pressure fractionation column is used to cool air flowing to a higher pressure fractionation column and gaseous nitrogen separated in the higher pressure fractionation column is compressed at a temperature below minus 50 C. and cooled -by indirect heat exchange with an external refrigerant and is then expanded 4back into the higher pressure fractionation column.
  • This process is particularly applicable when a large volume of a cold liquid, such as liquefied methane or liquefied oxygen, is available and requires gasification.
  • a cold liquid such as liquefied methane or liquefied oxygen
  • the available liquefied gas is regasified for use, for example in the case of liquelied methane for use as towns gas or for towns gas enrichment or for reforming to towns gas.
  • the gaseous nitrogen separated in the higher pressure fractionation column may be cooled by an external refrigerant in any one of a number of ways.
  • the cooling by the external refrigerant may take place before or after the compression of this gaseous nitrogen stream or both before and after such compression.
  • the said cooling may also take place between the stages.
  • the external refrigerant is a hydrocarbon such as liquefied methane
  • an inert gas such as nitrogen, argon or helium
  • Such heat transfer medium may itself operate in a closed gas expansion refrigeration cycle.
  • the use of such an inert gas as heat transfer medium .between the ultimate external refrigerant and the circulating nitrogen stream minimizes the possibility of hydrocarbon leakage into the fractionation tower should there be any leakage in any of the heat exchangers utilizing the hydrocarbon.
  • Such -a system is simply a more complicated conception of the invention as defined above, since the inert gas operating in a closed gas expansion refrigeration cycle can itself be looked upon as the external refrigerant cooling the nitrogenflowing from the higher pressure fractionation column.
  • FIG. 1 is a ilow diagram illustrating the principle of the invention.
  • FIG. 2 shows an alternative form of the invention.
  • heat exchanger 4 the air is cooled by indirect heat exchange with cold water and in heat exchanger 5 it is cooled by indirect heat exchange with cold natural gas flowing through conduit 6 as will 'be described in more detail below. Any water condensing out of the -air in heat exchangers 4 and 5 is removed via valves 7 and ⁇ 8 respectively.
  • Heat exchanger 5 may be a reversing heat exchanger or one of a pair of regenerating heat exchangers so that freezing of air humidity can be dealtwith.
  • the air leaving heat exchanger 5 is at a temperature of about minus C. and then passes through a silica .gel bed 9 to remove any remaining humidity. It then passes through heat exchanger 10 in which it is cooled to minus C. by heat exchange with cold natural Agas flowing through conduit 11 as will be described in more detail below.
  • Heat exchanger 13 may be a reversing exchanger in one of a pair of regenerating heat exchangers so that carbon dioxide freezing out at this stage will be removed; however, heat exchanger 13 may alternatively be a nonreversing heat exchanger and in this case the carbon dioxide would be removed either by low temperature adsorption or by caustic scrubbing after blower 2 or by any other conventional carbon dioxide removal system.
  • the air at minus 172 C. then passes through a hydrocarbon absorber 16 to remove any hydrocarbon contaminants, and then passes into higher pressure fractionation column 17 operating at about 5.5 atmospheres. Above column 17 is a lower pressure column 29. From the top of column 17 a stream of gaseous nitrogen at minus 178 C. is taken off through conduit 1'8, part of which stream flows Via conduit .15 through heat exchanger 13 to cool the air stream as described above, and the other part flows via conduit 19 through heat exchanger 20 in which it cools compressed gaseous nitrogen as will be described below. The two parts of the said stream rejoin one another in conduit 21 at a temperature of about minus 73 C. and are cooled in heat exchanger 22 to minus 153 C. by heat exchange with natural gas as will be described below.
  • the stream of nitrogen at minus 153 C. is compressed to 19 atmospheres in compressor 23, cooled again in heat exchanger 24 against natural gas, as will be described below, compressed to 71 ⁇ atmospheres in compressor 25 and cooled again partly in heat exchanger 20 against the cold nitrogen gas in conduit 19 and partly in heat exchanger 26 against natural gas, as will be described below.
  • the compressed nitrogen stream then has a temperature of about minus 158 C. in conduit 27, which feeds it back to the higher pressure fr-actionation column 17 through expansion valve 2'8.
  • the expansion through valve 28 causes a large drop in temperature providing refrigeration for the operation of column 17.
  • liquid oxygen collects at the bottom and is drawn off as product via conduit 36, while gaseous nitrogen is taken off overhead via conduit 14 and used to cool the incoming air in heat exchanger 13.
  • conduit 40 From conduit 40 the natural gas is divided into three streams in conduits ⁇ 41, 42 and 43, the first two of which are used to cool the circulating nitrogen stream in heat exchangers 22 and 24 and then are fed back via conduit 6b into conduit 6 downstream of heat exchanger 5, and the third of which is used to cool air in heat exchanger 10 and is then fed back via conduit 6c into conduit ⁇ 6 upstream of heat exchanger 5.
  • the natural gas exits from the plant via conduit 6 at about 70 atmospheres pressure, and is available vfor pipeline distribution to its point of use, if necessary, after warming to ambient temperature.
  • a plant, as in the accompanying drawing, producing 500 metric tons of liquid oxygen per day would have a power requirement of 4,630 kilowatts.
  • 102 million standard cubic feet per day of liquefied natural gas would be gasifed.
  • a conventional plant producing 500 metric tons ⁇ of liquid oxygen per day would have a power requirement of about 15,000 kilowatts, demonstrating the considerable savings afforded by the present invention.
  • the process described above with reference to the accompanying drawing can readily be adapted for the production of gaseous oxygen instead -of liquefied oxygen.
  • gaseous oxygen at about 16 atmospheres pressure is required as product
  • the liquefied oxygen, leaving through conduit 36 can be pumped up to, say, 19 atmospheres pressure, used to assist in cooling the circulating nitrogen stream by passing the pressurized liquid oxygen through heat exchanger 20 in which it would ⁇ be vaporized and converted to gaseous oxygenat the required pressure.
  • less liquefied natural gas would be required to operate the -process as compared with the case when liquid oxygen is being produced.
  • gaseous oxygen may be withdrawn from the lower part of column 29 and then pass through heat exchanger 13 or 20 and then compressed to about 16 atmospheres with or Without inter-cooling.
  • the cooling medium could be cold nitrogen in one of heat exchangers 22, 24 or 26.
  • FIG. 2 illustrates an alternative manner of carrying out the process of the present invention, in which the external refrigerant is a hydrocarbon and an inert gas, such as nitrogen, is used as heat exchange medium between the hydrocarbon and the nitrogen stream from the higher pressure fractionation column.
  • the additional nitrogen line is depicted in FIG. 2 by -a heavier line than the rest of the flow circuit merely in order to show more clearly the portion which has been changed.
  • the flow of air and of oxygen and nitrogen from the fractionation columns is the safme as in FIG. 1, but heat exchangers 10, 22, 24 and 26 are replaced by evaporative heat exchangers, in which the air and the nitrogen from the high pressure fractionation column respectively are cooled against evaporating liquid nitrogen operating in a vapor compression refrigeration cycle as follows:
  • Liquid nitrogen in conduit 50 is divided into four streams in conduits 51, 52, 53 and 54.
  • conduit 51 it flows through expansion valve 55 and then through evaporative heat exchanger 26a, in which it cools the nitrogen stream circulating from and back to column 17 and then is fed into heat exchanger 5.
  • the liquid nitrogen in conduits 52 and 53 pass through expansion valves 56 and 57 respectively and hence through evaporative heat exchangers 24a and 22a respectively, in which it cools the circulating nitrogen stream from column 17 and from which it is then fed back into conduit ⁇ 6 downstream of heat exchanger 5.
  • the liquid nitrogen in conduit 54 passes through expansion valve 58 and thence through evaporative heat exchanger 10a, in which it cools air and is then fed back into conduit 6 upstream of heat exchanger 5.
  • the present invention can be applied to a three-stage fractionation column ⁇ wherein the nitrogen is withdrawn from the Ihighest pressure column.
  • a heat exchange system similar to that described with reference to the accompanying drawings, but wherein the nitrogen, 'before compression, is under a pressure of about 10 atmospheres.
  • step (e) wherein the gaseous nitrogen separated in the higher pressure fractionation column is divided into two streams prior to said compression, and is heat exchanged in one of said streams with incoming air feed for the system, and is heat-exchanged in the other of said two streams with compressed and cooled gaseous nitrogen from step (d), after which the two streams are reunited prior to said compression, said compression being in at least two stages with a heat exchange prior to and intermediate the stages, the external natural gas refrigerant being in parallel low in the latter heat exchange.
  • step (e) wherein the gaseous nitrogen separated in the higher fractionation col-umn is divided into two streams 'prior to Isaid compression, and is heatexchanged in one of said streams with incoming air feed for the system, and is heat-exchanged in the other of said two streams with compressed and cooled gaseous nitrogen from step (d), after which the two streams are reunited prior to said compression, said com-pression being in at least two stages with a lheat exchange prior to and intermediate the stages, the external methane refrigerant being in parallel ow in the latter heat exchange.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Separation By Low-Temperature Treatments (AREA)
US37597964 1963-11-12 1964-06-15 Process for the separation of nitrogen and oxygen from air by fractional distillation Expired - Lifetime US3339370A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707849A (en) * 1969-03-07 1973-01-02 Linde Ag Fractionation of air by using refrigeration from open cycle evaporation of external cryogenic liquid
US3813890A (en) * 1969-07-02 1974-06-04 B Bligh Process of continuous distillation
US3886758A (en) * 1969-09-10 1975-06-03 Air Liquide Processes for the production of nitrogen and oxygen
JPS5216480A (en) * 1975-07-30 1977-02-07 Nippon Sanso Kk Process for production of liquefied air using chilling of liquefied na tural gas
US4617040A (en) * 1983-03-08 1986-10-14 Daidousanso Co., Ltd. Highly pure nitrogen gas producing apparatus
US4957524A (en) * 1989-05-15 1990-09-18 Union Carbide Corporation Air separation process with improved reboiler liquid cleaning circuit
US5611218A (en) * 1995-12-18 1997-03-18 The Boc Group, Inc. Nitrogen generation method and apparatus
US5903688A (en) * 1994-08-25 1999-05-11 Leica Lasertechnik Gmbh Device for feeding a UV laser into a confocal laser scanning microscope
US6131407A (en) * 1999-03-04 2000-10-17 Wissolik; Robert Natural gas letdown liquefaction system
EP1055894A1 (fr) * 1999-05-26 2000-11-29 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procédé et installation de séparation d'air
US20040083756A1 (en) * 2002-11-01 2004-05-06 Jean-Pierre Tranier Combined air separation natural gas liquefaction plant
US20060169000A1 (en) * 2005-01-14 2006-08-03 Frederic Judas Process and apparatus for the separation of air by cryogenic distillation
EP2050999A1 (fr) 2007-10-19 2009-04-22 Air Products and Chemicals, Inc. Système pour compression froide d'un flux d'air utilisant une réfrigération au gaz naturel
FR2990500A1 (fr) * 2012-05-11 2013-11-15 Air Liquide Procede et appareil de separation d'air par distillation cryogenique

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR968603A (fr) * 1950-01-30 1950-12-01 Procédé pour refroidir un gaz contenant un constituant relativement peu volatil
US2685181A (en) * 1952-04-30 1954-08-03 Emily C Schlitt Separation of the constituents of gaseous mixtures
US3058314A (en) * 1957-08-12 1962-10-16 British Oxygen Co Ltd Process and apparatus for the low temperature separation of air
US3183677A (en) * 1960-06-16 1965-05-18 Conch Int Methane Ltd Liquefaction of nitrogen in regasification of liquid methane
US3203191A (en) * 1960-09-02 1965-08-31 Conch Int Methane Ltd Energy derived from expansion of liquefied gas
US3216206A (en) * 1961-11-29 1965-11-09 Linde Eismasch Ag Low temperature distillation of normally gaseous substances

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR968603A (fr) * 1950-01-30 1950-12-01 Procédé pour refroidir un gaz contenant un constituant relativement peu volatil
US2685181A (en) * 1952-04-30 1954-08-03 Emily C Schlitt Separation of the constituents of gaseous mixtures
US3058314A (en) * 1957-08-12 1962-10-16 British Oxygen Co Ltd Process and apparatus for the low temperature separation of air
US3183677A (en) * 1960-06-16 1965-05-18 Conch Int Methane Ltd Liquefaction of nitrogen in regasification of liquid methane
US3203191A (en) * 1960-09-02 1965-08-31 Conch Int Methane Ltd Energy derived from expansion of liquefied gas
US3216206A (en) * 1961-11-29 1965-11-09 Linde Eismasch Ag Low temperature distillation of normally gaseous substances

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3707849A (en) * 1969-03-07 1973-01-02 Linde Ag Fractionation of air by using refrigeration from open cycle evaporation of external cryogenic liquid
US3813890A (en) * 1969-07-02 1974-06-04 B Bligh Process of continuous distillation
US3886758A (en) * 1969-09-10 1975-06-03 Air Liquide Processes for the production of nitrogen and oxygen
JPS5216480A (en) * 1975-07-30 1977-02-07 Nippon Sanso Kk Process for production of liquefied air using chilling of liquefied na tural gas
JPS5825954B2 (ja) * 1975-07-30 1983-05-31 ニホンサンソ カブシキガイシヤ エキカテンネンガスノカンレイオリヨウシタエキタイクウキノ セイゾウホウホウ
US4617040A (en) * 1983-03-08 1986-10-14 Daidousanso Co., Ltd. Highly pure nitrogen gas producing apparatus
US4957524A (en) * 1989-05-15 1990-09-18 Union Carbide Corporation Air separation process with improved reboiler liquid cleaning circuit
US5903688A (en) * 1994-08-25 1999-05-11 Leica Lasertechnik Gmbh Device for feeding a UV laser into a confocal laser scanning microscope
US5611218A (en) * 1995-12-18 1997-03-18 The Boc Group, Inc. Nitrogen generation method and apparatus
US6131407A (en) * 1999-03-04 2000-10-17 Wissolik; Robert Natural gas letdown liquefaction system
EP1055894A1 (fr) * 1999-05-26 2000-11-29 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procédé et installation de séparation d'air
US6295837B1 (en) 1999-05-26 2001-10-02 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Apparatus for air separation
KR100674451B1 (ko) * 1999-05-26 2007-01-29 레르 리뀌드, 소시에떼 아노님 아 디렉또와르 에 꽁세예 드쉬르베양스 뿌르 레뛰드 에 렉스쁠로와따시옹 데 프로세데 죠르쥬 끌로드 공기분리장치
US7143606B2 (en) * 2002-11-01 2006-12-05 L'air Liquide-Societe Anonyme A'directoire Et Conseil De Surveillance Pour L'etide Et L'exploitation Des Procedes Georges Claude Combined air separation natural gas liquefaction plant
US20040083756A1 (en) * 2002-11-01 2004-05-06 Jean-Pierre Tranier Combined air separation natural gas liquefaction plant
US7546748B2 (en) * 2005-01-14 2009-06-16 Air Liquide Process & Construction, Inc. Process and apparatus for the separation of air by cryogenic distillation
US20060169000A1 (en) * 2005-01-14 2006-08-03 Frederic Judas Process and apparatus for the separation of air by cryogenic distillation
US20080245102A1 (en) * 2005-11-17 2008-10-09 Frederic Judas Process and Apparatus for the Separation of Air by Cryogenic Distillation
JP2009174844A (ja) * 2007-10-19 2009-08-06 Air Products & Chemicals Inc 空気流圧縮方法及び空気流圧縮装置
US20090100863A1 (en) * 2007-10-19 2009-04-23 Air Products And Chemicals, Inc. System to Cold Compress an Air Stream Using Natural Gas Refrigeration
EP2050999A1 (fr) 2007-10-19 2009-04-22 Air Products and Chemicals, Inc. Système pour compression froide d'un flux d'air utilisant une réfrigération au gaz naturel
KR100972215B1 (ko) 2007-10-19 2010-07-26 에어 프로덕츠 앤드 케미칼스, 인코오포레이티드 천연 가스 냉각을 이용하여 공기 스트림을 냉간 압축하는 시스템
CN101413750B (zh) * 2007-10-19 2013-06-19 气体产品与化学公司 利用天然气制冷对空气流进行冷压缩的系统
US8601833B2 (en) * 2007-10-19 2013-12-10 Air Products And Chemicals, Inc. System to cold compress an air stream using natural gas refrigeration
FR2990500A1 (fr) * 2012-05-11 2013-11-15 Air Liquide Procede et appareil de separation d'air par distillation cryogenique
CN104755360A (zh) * 2012-05-11 2015-07-01 乔治洛德方法研究和开发液化空气有限公司 用于通过低温蒸馏进行空气分离的方法和设备
WO2013167817A3 (fr) * 2012-05-11 2015-09-17 L'air Liquide,Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procédé et appareil de séparation d'air par distillation cryogénique
CN104755360B (zh) * 2012-05-11 2017-09-29 乔治洛德方法研究和开发液化空气有限公司 用于通过低温蒸馏进行空气分离的方法和设备

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GB975729A (en) 1964-11-18
FR1380995A (fr) 1964-12-04
ES302849A1 (es) 1964-11-01

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