EP1026464A1 - Luftzerlegungverfahren durch Tieftemperaturrektifikation - Google Patents

Luftzerlegungverfahren durch Tieftemperaturrektifikation Download PDF

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Publication number
EP1026464A1
EP1026464A1 EP00400235A EP00400235A EP1026464A1 EP 1026464 A1 EP1026464 A1 EP 1026464A1 EP 00400235 A EP00400235 A EP 00400235A EP 00400235 A EP00400235 A EP 00400235A EP 1026464 A1 EP1026464 A1 EP 1026464A1
Authority
EP
European Patent Office
Prior art keywords
column
passage
gas
installation
exchange system
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Withdrawn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
EP00400235A
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English (en)
French (fr)
Inventor
Patrick Le Bot
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.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP1026464A1 publication Critical patent/EP1026464A1/de
Withdrawn legal-status Critical Current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
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04163—Hot end purification of the feed air
    • F25J3/04169—Hot end purification of the feed air by adsorption of the impurities
    • 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
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04163—Hot end purification of the feed 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
    • 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
    • F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
    • F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
    • F25J3/04303—Lachmann expansion, i.e. expanded into oxygen producing or low pressure column
    • 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
    • F25J3/0446—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 the heat generated by mixing two different phases
    • F25J3/04466—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 the heat generated by mixing two different phases for producing oxygen as a mixing column overhead gas by mixing gaseous air feed and liquid oxygen
    • 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
    • F25J2200/04—Processes or apparatus using separation by rectification in a dual pressure main column system
    • F25J2200/06—Processes or apparatus using separation by rectification in a dual pressure main column system in a classical double column flow-sheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • 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
    • F25J2205/00—Processes or apparatus using other separation and/or other processing means
    • F25J2205/24—Processes or apparatus using other separation and/or other processing means using regenerators, cold accumulators or reversible heat exchangers
    • 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
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/50—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams the fluid being oxygen
    • 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
    • Y10S62/902—Apparatus
    • Y10S62/908—Filter or absorber
    • 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
    • Y10S62/902—Apparatus
    • Y10S62/909—Regeneration

Definitions

  • the present invention relates to a method and an installation for air separation by cryogenic distillation.
  • the air can come from the exhaust of a turbine of detent as described in EP-A-698772: in this case, there is either a minimum oxygen pressure, i.e. a minimum production of liquid so that the whole is energetically optimal.
  • US-A-5 802 872 describes the use of a brazed plate heat exchanger and a reversible exchanger to cool the air intended for the middle column pressure of a double column.
  • WO 99/42773 published August 26, 1999 describes a method in which between 50 and 80% of the air intended for an air separation device is purified in water in regenerators and the rest of the air is purified by adsorption.
  • An object of the invention is to reduce the investment costs of impure oxygen producing apparatus.
  • the first air flow cools periodically and cyclically in at least a first pass of the system and in at least a third passage of the system. If the first air flow cools in at least one first pass of the system, the gas coming from a column of the installation warms up in at least one of the third passages. If the first flow air cools in at least a third pass of the system, at least part of the gas from a column in the installation regenerates the first passages and no longer circulates in at least part of the third passages.
  • the heat exchange system may include a single exchange line or can include two exchange lines separated including a first in which the first air flow cools compressed and a second in which the second air flow cools compressed. At least one of the third passes (or the third pass) in which the gas flow from the installation is heated in the first exchange line. Possibly at least one of the third passages in which the flow of gas from the installation heats up may be in the second exchange line.
  • the first flow can be lower than the second flow and, by preferably constitutes between 3 and 50% of the total air flow sent to the installation, especially between 10 and 40% of the total flow.
  • At least part of the first air flow cooled in the exchanger can supply a column operating at a pressure of at least 0.5 bar more low than medium pressure.
  • the column operating at a pressure of at least 0.5 lower than medium pressure bar is a mixing column, a column operating at an intermediate to medium and low pressure pressure or at the pressure of the low pressure column.
  • a waste gas enriched in nitrogen from the lower column pressure and / or oxygen enriched gas from the mixing column or the low pressure column and / or an argon enriched gas from an argon column warms up periodically and cyclically in the first pass where cools the first flow.
  • At least part of the first air flow can be drawn at a point intermediary of the exchange system, rather than at the cold end of it.
  • the purification can be completely or partially eliminated upstream from the heat exchange system.
  • the impure oxygen gas containing between 50 and 96 mol.% Of oxygen could serve to regenerate the first and / or second passage (s) and serve as a product while being charged water and CO 2 .
  • a gas having this composition can supply a blast furnace. So the impure oxygen is not wasted.
  • it comprises a mixing column, means to send liquid oxygen from the low pressure column to the column mixing and means for sending air from the exchange system thermal to the mixing column.
  • the necessary frigories can be produced at least in part by an insufflation turbine supplied with air from the exchanger.
  • FIG. 1 makes it possible to produce gaseous oxygen by a mixing column process in which the operating pressure of the mixing column 5 is lower than the operating pressure of column MP 1.
  • the installation includes a medium pressure column 1, a column low pressure 3 thermally connected to it and a mixing column 5.
  • the air 100 constituting between 30 and 50% of the air supplying the column of mixture 5 is compressed to a level close to the supply pressure of the oxygen 21 in the compressor 7.
  • Said air flow 100 is introduced directly into a first passage A forming part of the main exchange line 11, without being treated beforehand in a decarbonation / desiccation system.
  • this first passage A (or these first passages) and the third passage C can actually be in a exchanger and the second passage B and the third passage D can be find in another exchanger.
  • valves 1A, 1C, 2D, 2B are open and the valves 1B, 1D, 2A, 2C are closed and the air cools in the first one or more passages A before being sent to the tank of the mixing column 5.
  • the waste gas 17 is divided into two parts. A first part is sent to a third pass of the exchange system C (of the third exchange system passages) and the rest is sent to another third pass D of the exchange system (other passages of the system exchange) in the first phase.
  • valves 1A, 1C, 2D, 2B are closed and the valves 1B, 1D, 2A, 2C are open and the first part of the waste gas, constituting between 30 and 40% of the air sent to the device, is sent to first passages A, normally occupied by the air which cools and the rest waste gas is always sent to the same passages as in operation normal.
  • first passages A normally occupied by the air which cools and the rest waste gas is always sent to the same passages as in operation normal.
  • the number of passages C will be equal to the number of passages A.
  • the system goes back to the first phase and the air cools as before in the or the first passages A before being sent to the bottom of the column mixture 5.
  • the waste gas 17 is divided into two parts. Again, a first part is sent to a third pass of the exchange system C (third passages of the trading system) and the rest is sent to another third pass D of the exchange system (others passages D of the exchange system).
  • the waste gas will be used to regenerate the third passages C in which the air circulated during the second phase.
  • the circuits A of the exchange line dedicated to this untreated air and in which therefore the water vapor and the carbon dioxide snow are deposited are cyclically regenerated by one of the gases coming from the distillation or mixing columns, and therefore substantially free impurities (i.e. free of water and CO 2 ) (reversible exchanger system).
  • a residual gas from the low pressure column 3 can be sent either to regenerate the first pass of the exchanger or to a third pass where it heats up. While the regenerating gas circulates in the first passage, the first air flow cools in the third passage.
  • At least a third pass C will be part of the first exchanger where the first air flow and at least a third cool down passage D will be part of the second exchanger where the second cools air flow.
  • the air supplying the MP column is purified, either by a desiccation / décarbonatation 13, also by regenerating the second passage with a residual gas from the low pressure column (nitrogen or impure oxygen).
  • the air purified in purification 13 is partially cooled in the second passage or second passages B, part is withdrawn from the exchanger, expanded in an insufflation turbine 15 and sent to the low pressure column 3; the rest of the air continues to cool in the second pass and is sent to the medium pressure column 1.
  • Liquid oxygen pumped at below average pressure pressure supplies the head of the mixing column 5.
  • Gaseous oxygen impure containing between 60 and 96 mol%. oxygen is drawn from the head of the mixing column and is sent to the heat exchange system 11 or to the second exchanger, if there is one, where it heats up.
  • An intermediate liquid and a tank column liquid mixture are sent to the low pressure column.
  • Rich liquid is sent from the medium pressure column to the low pressure column at the same level as the air from the blowing turbine.
  • the first passage A is regenerated with all or part of the gas withdrawn at the head of the mixing column which contains at least 50% oxygen and preferably 80% oxygen which can be sent either to regenerate the first pass of the exchanger or to a third pass where it warms up. While the regenerating gas is circulating in the first pass (or the first passages), the first air flow is cools in the third pass (or third passes).
  • the part of impure oxygen wet and charged with CO 2 is mixed with the rest of the gas and sent to a blast furnace or other installation consuming wet impure oxygen.
  • At least two third passages are therefore preferably at least two third passages, at the less in the case of Figure 1.
  • Preferably at least a third passage will be part of the first exchanger where the first air flow cools and at least a third passage will be part of the second exchanger where cools the second air flow.
  • Figure 3 shows a simplified version of Figure 1 in which the first passages A and the third passages C are in a exchanger 11A and the second passages B, the heating passages of gaseous oxygen 21 and the third passages D are in a exchanger 11B.
  • Figure 4 shows a simplified version of Figure 2 in which the first passages A, and the third passages C are in a exchanger 11A and the second passages and the heating passages of the waste gas 17 from the low pressure column is in an exchanger 11B.
  • the air sent to the mixing column does not necessarily come from same compressor as the air intended for the medium pressure column.
  • one of the flows can come from the blower of a blast furnace or the compressor of a gas turbine or other air source compressed.
  • the invention is not limited to systems comprising a column mixture.
  • the first air flow can for example be intended for the lower column pressure or intermediate pressure of a triple column of the Etienne or Ha type.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP00400235A 1999-02-01 2000-01-31 Luftzerlegungverfahren durch Tieftemperaturrektifikation Withdrawn EP1026464A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9901097 1999-02-01
FR9901097A FR2789162B1 (fr) 1999-02-01 1999-02-01 Procede de separation d'air par distillation cryogenique

Publications (1)

Publication Number Publication Date
EP1026464A1 true EP1026464A1 (de) 2000-08-09

Family

ID=9541435

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00400235A Withdrawn EP1026464A1 (de) 1999-02-01 2000-01-31 Luftzerlegungverfahren durch Tieftemperaturrektifikation

Country Status (5)

Country Link
US (1) US6295835B1 (de)
EP (1) EP1026464A1 (de)
JP (1) JP2000230776A (de)
CA (1) CA2297475A1 (de)
FR (1) FR2789162B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2400249A1 (de) * 2010-06-25 2011-12-28 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Verfahren und Anlage zur Trennung von Luft durch kryogene Destillation

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2854579B1 (fr) * 2003-05-09 2005-06-17 Air Liquide Installation de distillation comprenant des colonnes a garnissages structures ondules-croises et procede d'augmentation de capacite d'une installation de distillation
FR2861841B1 (fr) * 2003-11-04 2006-06-30 Air Liquide Procede et appareil de separation d'air par distillation cryogenique
FR2862128B1 (fr) * 2003-11-10 2006-01-06 Air Liquide Procede et installation de fourniture d'oxygene a haute purete par distillation cryogenique d'air
WO2011061459A2 (fr) * 2009-11-23 2011-05-26 L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Procede et appareil de compression et de refroidissement d'air
US8528363B2 (en) * 2009-12-17 2013-09-10 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and apparatus for the separation of air by cryogenic distillation

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1117616B (de) * 1960-10-14 1961-11-23 Linde Eismasch Ag Verfahren und Einrichtung zum Gewinnen besonders reiner Zerlegungsprodukte in Tieftemperaturgaszerlegungsanlagen
FR1426146A (fr) * 1963-03-29 1966-01-28 Lindes Eismaschinen Ag Procédé de fabrication d'oxygène, installation pour la mise en oeuvre du procédé et produits conformes à ceux obtenus par le présent procédé ou procédé similaire
EP0229803A1 (de) * 1985-07-15 1987-07-29 Air Liquide Verfahren und vorrichtung für luftdestillation.
EP0531182A1 (de) * 1991-08-07 1993-03-10 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren und Einrichtung zur Luftdestillation und die Verwendung bei der Zuführung von Gas in Stahlwerken
US5471843A (en) * 1993-06-18 1995-12-05 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and installation for the production of oxygen and/or nitrogen under pressure at variable flow rate
EP0698772A1 (de) * 1994-08-25 1996-02-28 The Boc Group, Inc. Verfahren und Vorrichtung zur Herstellung von Sauerstoff
EP0757217A1 (de) * 1995-08-03 1997-02-05 The BOC Group plc Lufttrennung
US5778700A (en) * 1997-04-30 1998-07-14 The Boc Group, Inc. Method of producing gaseous oxygen at variable rate
US5802872A (en) * 1997-07-30 1998-09-08 Praxair Technology, Inc. Cryogenic air separation with combined prepurifier and regenerators

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
CA785475A (en) * 1968-05-21 Jakob Fritz Process for heat exchange or for heat exchange and cleansing of gases in periodically reversible regenerators
US4131155A (en) * 1975-01-28 1978-12-26 Air Products And Chemicals, Inc. Reversible heat exchanger or regenerator systems
JPS51111950A (en) * 1975-03-28 1976-10-02 Kobe Steel Ltd Temperature control method of a change-over type heat exchanger for ai r separator
JPS6019439B2 (ja) * 1981-12-25 1985-05-16 株式会社日立製作所 切替式熱交換器群の温度制御法
US5740683A (en) * 1997-03-27 1998-04-21 Praxair Technology, Inc. Cryogenic rectification regenerator system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1117616B (de) * 1960-10-14 1961-11-23 Linde Eismasch Ag Verfahren und Einrichtung zum Gewinnen besonders reiner Zerlegungsprodukte in Tieftemperaturgaszerlegungsanlagen
FR1426146A (fr) * 1963-03-29 1966-01-28 Lindes Eismaschinen Ag Procédé de fabrication d'oxygène, installation pour la mise en oeuvre du procédé et produits conformes à ceux obtenus par le présent procédé ou procédé similaire
EP0229803A1 (de) * 1985-07-15 1987-07-29 Air Liquide Verfahren und vorrichtung für luftdestillation.
EP0531182A1 (de) * 1991-08-07 1993-03-10 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Verfahren und Einrichtung zur Luftdestillation und die Verwendung bei der Zuführung von Gas in Stahlwerken
US5471843A (en) * 1993-06-18 1995-12-05 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and installation for the production of oxygen and/or nitrogen under pressure at variable flow rate
EP0698772A1 (de) * 1994-08-25 1996-02-28 The Boc Group, Inc. Verfahren und Vorrichtung zur Herstellung von Sauerstoff
EP0757217A1 (de) * 1995-08-03 1997-02-05 The BOC Group plc Lufttrennung
US5778700A (en) * 1997-04-30 1998-07-14 The Boc Group, Inc. Method of producing gaseous oxygen at variable rate
US5802872A (en) * 1997-07-30 1998-09-08 Praxair Technology, Inc. Cryogenic air separation with combined prepurifier and regenerators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2400249A1 (de) * 2010-06-25 2011-12-28 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Verfahren und Anlage zur Trennung von Luft durch kryogene Destillation

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CA2297475A1 (en) 2000-08-01
JP2000230776A (ja) 2000-08-22
US6295835B1 (en) 2001-10-02
FR2789162B1 (fr) 2001-11-09
FR2789162A1 (fr) 2000-08-04

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