EP0989375A1 - Procédé et liquéfacteur pour produire de l'air liquide - Google Patents

Procédé et liquéfacteur pour produire de l'air liquide Download PDF

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Publication number
EP0989375A1
EP0989375A1 EP99117725A EP99117725A EP0989375A1 EP 0989375 A1 EP0989375 A1 EP 0989375A1 EP 99117725 A EP99117725 A EP 99117725A EP 99117725 A EP99117725 A EP 99117725A EP 0989375 A1 EP0989375 A1 EP 0989375A1
Authority
EP
European Patent Office
Prior art keywords
gas
warm
work
rectification
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99117725A
Other languages
German (de)
English (en)
Inventor
Erich Dipl-Ing. Hahn
Jürgen Dipl.-Phys. Voit
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linde GmbH
Original Assignee
Linde GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Linde GmbH filed Critical Linde GmbH
Publication of EP0989375A1 publication Critical patent/EP0989375A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • F25J3/044—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 using a single pressure main column system only
    • 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
    • F25J1/0012—Primary atmospheric gases, e.g. air
    • 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/0035—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by gas expansion with extraction of work
    • F25J1/0037—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by gas expansion with extraction of work of a return stream
    • 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
    • F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
    • F25J1/0045—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by vaporising a liquid return stream
    • 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0201—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using only internal refrigeration means, i.e. without external refrigeration
    • F25J1/0202—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process using only internal refrigeration means, i.e. without external refrigeration in a quasi-closed internal refrigeration 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
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
    • F25J1/0244—Operation; Control and regulation; Instrumentation
    • F25J1/0254—Operation; Control and regulation; Instrumentation controlling particular process parameter, e.g. pressure, temperature
    • F25J1/0255—Operation; Control and regulation; Instrumentation controlling particular process parameter, e.g. pressure, temperature controlling the composition of the feed or liquefied gas, e.g. to achieve a particular heating value of natural gas
    • 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
    • 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
    • F25J3/04333—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams
    • F25J3/04339—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams of air
    • F25J3/04345—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using quasi-closed loop internal vapor compression refrigeration cycles, e.g. of intermediate or oxygen enriched (waste-)streams of air and comprising a gas work expansion 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/70—Refluxing the column with a condensed part of the feed stream, i.e. fractionator top is stripped or self-rectified
    • 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
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/40—Air or oxygen enriched air, i.e. generally less than 30mol% of O2

Definitions

  • the invention relates to a method for producing liquid air with a Oxygen content between 16 and 21 mol% in a low-temperature process, where atmospheric air is used as the feed gas in a warm part of the Process water vapor, carbon dioxide and airborne contaminants can be removed by cleaning, by compaction and work Relaxing process streams generated cold and in a cold part of the Process by low temperature rectification the liquid air is obtained.
  • the invention also relates to a condenser for performing the method according to one of claims 1 to 9 with a cleaning station, with at least one Device for compressing process gas, with at least one device for work-relieving expansion of process gas and with a rectification column separation stages, head cooling and one installed in the rectification column Sump heating.
  • Air becomes one Low-temperature process liquefied, subjected to a low-temperature rectification and one liquid air product with an oxygen content between 16.5 and 21% oxygen manufactured.
  • This air is made up of an oxygen and a nitrogen product mixed (Synthetic Liquid Air, SLA).
  • SLA Synthetic Liquid Air
  • the object of the invention is therefore, the liquid air with less effort to manufacture as it is required as a product.
  • the liquid air under Use less than four theoretical plates as a liquid top product is generated in the rectification and that also a liquid bottom product of the rectification, used exergetically and as warm residual gas to the Atmosphere or at least partially used in cleaning. So far, one had to use an order of magnitude more theoretical floors producing an oxygen and a nitrogen product is now only a small one To do a fraction of the cutting work.
  • the extraction of liquid air as Top product also saves intermediate storage of liquid oxygen and liquid nitrogen.
  • impurities for example hydrocarbons. The exergy content of the bottom product is largely used and the residual gas generated after use can be used be used for further use.
  • the Cleaning carried out adsorptively, the residual gas as regeneration and / or Purge gas can be used. Because the liquid bottom product from the rectification is taken to an accumulation of hydrocarbons at the Avoid rectification and in the air product and there for the adsorptive cleaning Purge and regeneration gas is required, the use of the residual gas saves one otherwise providing regeneration and purge gas.
  • the atmospheric air can be a warmed gas stream from the cold part of the Process mixed and the resulting warm mixed flow to one Initial pressure compressed for work-related relaxation and then cleaned become.
  • the atmospheric air can be precompressed and a warmed gas flow out mixed into the cold part of the process and the resulting warm mixed flow compressed at an initial pressure for work-related relaxation and afterwards getting cleaned.
  • the most favorable configuration of the compression and cleaning is by Optimizing the process and thereby determining which compressors are on the market are available.
  • the purified warm mixed stream compressed to the initial pressure is preferred Countercurrent to a cold gas and the liquid bottom product of the rectification part to an initial temperature for work-related relaxation pre-cooled and further cooled by the work-relieving relaxation during a other part of said warm mixed flow in countercurrent both pre-cooled as well as further cooled, at least partially liquefied and then isenthalp relaxed and fed to the rectification as a choke flow.
  • a head gas from the Rectification fed and both together as the cold gas for cooling in the Counterflow can be used. This configuration of the inventive method when both gas flows at the same pressure available.
  • the liquid bottom product can cool the warm mixed stream evaporated and warmed.
  • the cold content of the bottom product used in a cheap way.
  • liquid bottom product for indirect cooling of the warm mixed stream evaporated, heated to an inlet temperature of a residual gas turbine over the Residual gas turbine directed, thereby cooled back and again for cooling the warm mixed current used.
  • Work relaxation in the Residual gas turbine has advantages if there is a sufficiently large pressure difference between the Rectification pressure and the atmosphere or use in cleaning is present.
  • Characteristic of the liquefier according to the invention is that the sump heater the rectification column as indirect heating with an electric heater or with a heating tube arrangement is executed, the heating tube arrangement being a suitable one leads warm fluid, preferably a warm process gas, and that the number of Separation stages of a theoretical number of plates of less than four theoretical plates corresponds.
  • the electric heater is particularly suitable for small systems where a correspondingly higher power consumption is not significant compared to one Effort for installing a heating tube arrangement with associated Process gas lines.
  • the small number of separation stages guarantees one low total pressure drop for the gas conversion in the rectification column.
  • On Top condenser is omitted, since liquid from the reactor flow leads to the column return forms.
  • columns are included Capacitors and used with a variety of isolators. The The condenser according to the invention thus requires less investment and because of low pressure drop in the column less energy.
  • the cleaning station is preferably designed with switchable Molsiebadsorbem, wherein at least one adsorber with process gas to be cleaned and at least one further adsorber are charged with regeneration gas or purge gas, whereby as Regeneration gas or purge gas residual gas from the condenser can be used.
  • the compression devices are preferably designed as turbo compressors. she can in the design of the method with a pre-compression of the air and post-compression (see above) via a common shaft and only one Be motor driven.
  • the devices for work relaxation are preferred as turbines executed, the turbines particularly preferably in a turbine / booster arrangement or are integrated in a turbine / generator arrangement.
  • the invention is explained in more detail using an embodiment with a figure.
  • the Figure shows an inventive method with admixing a heated Gas flow to atmospheric air.
  • the figure shows a schematic representation of an embodiment of the inventive method and the liquefier according to the invention.
  • Atmospheric air 1 together with a warmed partial stream 2 from the cold part of the process as a warm mixed stream 3 via a compressor 4, usually with Intercooling between compressor stages (not shown in the figure), and one After cooler 5 with water separator and a cleaning 6 with switchable Molsiebadsorbern directed.
  • a partial flow 7 is in a heat exchanger 8 an inlet temperature of a generator turbine 9 is pre-cooled and in the turbine 9 cooled further.
  • Another part of the warm mixed stream 3 is in the Heat exchanger 8 further cooled, at least partially liquefied, as stream 10 expanded in a throttle 11 and as stream 12 of a rectification column 13 fed.
  • a top gas 14 of the rectification column 13 forms together with the Via the turbine 9 relaxed partial flow 7, a cold gas 15 is the Heat exchanger 8 passes and forms as a heated gas stream 2 with the atmospheric air 1 the mixed flow 3.
  • a liquid formed in the throttle 11 Phase is partly used in the rectification column 13 as reflux and one other part at the top of the rectification column as a liquid air product 16 taken.
  • a bottom liquid obtained in the column is used to generate Heated steam rising in the rectification column 17.
  • Part 18 of the Bottom liquid is evaporated in the heat exchanger 8, warmed as residual gas 19 at least partially used in cleaning 6 as a purge and regeneration gas and on guided the atmosphere.
  • the rectification column 13 has internals 20 equipped that correspond to a theoretical number of trays less than 4. Bell bottoms are preferred.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP99117725A 1998-09-23 1999-09-08 Procédé et liquéfacteur pour produire de l'air liquide Withdrawn EP0989375A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843629 1998-09-23
DE19843629A DE19843629A1 (de) 1998-09-23 1998-09-23 Verfahren und Verflüssiger zur Erzeugung von flüssiger Luft

Publications (1)

Publication Number Publication Date
EP0989375A1 true EP0989375A1 (fr) 2000-03-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99117725A Withdrawn EP0989375A1 (fr) 1998-09-23 1999-09-08 Procédé et liquéfacteur pour produire de l'air liquide

Country Status (3)

Country Link
US (1) US6230518B1 (fr)
EP (1) EP0989375A1 (fr)
DE (1) DE19843629A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1050729A1 (fr) * 1999-05-04 2000-11-08 Praxair Technology, Inc. Système cryogénique de séparation des gaz de l'air comprenant un déphlegmateur
WO2013185783A1 (fr) 2012-06-11 2013-12-19 Arano-Trade Ltd. Système de transformation d'énergie
EP3552971A3 (fr) * 2018-03-23 2020-02-12 United Technologies Corporation Commande de refroidissement d'un système de propulsion

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Publication number Priority date Publication date Assignee Title
US5979440A (en) * 1997-06-16 1999-11-09 Sequal Technologies, Inc. Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator
US7086231B2 (en) * 2003-02-05 2006-08-08 Active Power, Inc. Thermal and compressed air storage system
US7314059B2 (en) * 2004-09-17 2008-01-01 Active Power, Inc. Systems and methods for controlling pressure of fluids
US20060059936A1 (en) * 2004-09-17 2006-03-23 Radke Robert E Systems and methods for providing cooling in compressed air storage power supply systems
US8333330B2 (en) * 2004-09-17 2012-12-18 Active Power, Inc. Systems and methods for controlling temperature and pressure of fluids
CA2708154A1 (fr) * 2007-12-07 2009-06-11 Dresser-Rand Company Systeme et procede de compression pour un systeme de liquefaction de gaz
US7821158B2 (en) * 2008-05-27 2010-10-26 Expansion Energy, Llc System and method for liquid air production, power storage and power release
US20100024478A1 (en) * 2008-07-29 2010-02-04 Horst Corduan Process and device for recovering argon by low-temperature separation of air
US8907524B2 (en) 2013-05-09 2014-12-09 Expansion Energy Llc Systems and methods of semi-centralized power storage and power production for multi-directional smart grid and other applications
US10655913B2 (en) 2016-09-12 2020-05-19 Stanislav Sinatov Method for energy storage with co-production of peaking power and liquefied natural gas
US11835270B1 (en) 2018-06-22 2023-12-05 Booz Allen Hamilton Inc. Thermal management systems
US11408649B1 (en) 2018-11-01 2022-08-09 Booz Allen Hamilton Inc. Thermal management systems
US11313594B1 (en) 2018-11-01 2022-04-26 Booz Allen Hamilton Inc. Thermal management systems for extended operation
US11333402B1 (en) 2018-11-01 2022-05-17 Booz Allen Hamilton Inc. Thermal management systems
US11761685B1 (en) 2019-03-05 2023-09-19 Booz Allen Hamilton Inc. Open cycle thermal management system with a vapor pump device and recuperative heat exchanger
US11629892B1 (en) 2019-06-18 2023-04-18 Booz Allen Hamilton Inc. Thermal management systems
US11752837B1 (en) 2019-11-15 2023-09-12 Booz Allen Hamilton Inc. Processing vapor exhausted by thermal management systems
US11561030B1 (en) 2020-06-15 2023-01-24 Booz Allen Hamilton Inc. Thermal management systems

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US4169361A (en) * 1975-10-28 1979-10-02 Linde Aktiengesellschaft Method of and apparatus for the generation of cold
DE4303670A1 (de) * 1993-02-09 1994-08-11 Foerster Hans Dr Verfahren zur Abscheidung von dampfförmigen Inhaltsstoffen aus Luft und technischen Gasen
US5373699A (en) * 1989-08-18 1994-12-20 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes George Claude Process for the production of nitrogen by cryogenic distillation of atmospheric air
US5507147A (en) * 1994-05-05 1996-04-16 Foerster; Hans Method of separating vaporous substances from air saturated with high proportions of components having a low boiling point
US5546765A (en) * 1994-09-14 1996-08-20 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Air separating unit
EP0774634A2 (fr) * 1995-11-17 1997-05-21 The BOC Group plc Fabrication de gaz
EP0856713A2 (fr) * 1997-01-31 1998-08-05 The BOC Group plc Préparation de mélanges liquides cryogéniques

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US5379598A (en) * 1993-08-23 1995-01-10 The Boc Group, Inc. Cryogenic rectification process and apparatus for vaporizing a pumped liquid product
FR2714721B1 (fr) * 1993-12-31 1996-02-16 Air Liquide Procédé et installation de liquéfaction d'un gaz.
US5454227A (en) * 1994-08-17 1995-10-03 The Boc Group, Inc. Air separation method and apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4169361A (en) * 1975-10-28 1979-10-02 Linde Aktiengesellschaft Method of and apparatus for the generation of cold
US5373699A (en) * 1989-08-18 1994-12-20 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes George Claude Process for the production of nitrogen by cryogenic distillation of atmospheric air
DE4303670A1 (de) * 1993-02-09 1994-08-11 Foerster Hans Dr Verfahren zur Abscheidung von dampfförmigen Inhaltsstoffen aus Luft und technischen Gasen
US5507147A (en) * 1994-05-05 1996-04-16 Foerster; Hans Method of separating vaporous substances from air saturated with high proportions of components having a low boiling point
US5546765A (en) * 1994-09-14 1996-08-20 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Air separating unit
EP0774634A2 (fr) * 1995-11-17 1997-05-21 The BOC Group plc Fabrication de gaz
EP0856713A2 (fr) * 1997-01-31 1998-08-05 The BOC Group plc Préparation de mélanges liquides cryogéniques

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1050729A1 (fr) * 1999-05-04 2000-11-08 Praxair Technology, Inc. Système cryogénique de séparation des gaz de l'air comprenant un déphlegmateur
WO2013185783A1 (fr) 2012-06-11 2013-12-19 Arano-Trade Ltd. Système de transformation d'énergie
EP3552971A3 (fr) * 2018-03-23 2020-02-12 United Technologies Corporation Commande de refroidissement d'un système de propulsion
US11299279B2 (en) 2018-03-23 2022-04-12 Raytheon Technologies Corporation Chilled working fluid generation and separation for an aircraft
US11305879B2 (en) 2018-03-23 2022-04-19 Raytheon Technologies Corporation Propulsion system cooling control
US11542016B2 (en) 2018-03-23 2023-01-03 Raytheon Technologies Corporation Cryogenic cooling system for an aircraft

Also Published As

Publication number Publication date
DE19843629A1 (de) 2000-03-30
US6230518B1 (en) 2001-05-15

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