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US20130152629A1 - "Air cooling and purification apparatus intended for a cryogenic air distillation unit" - Google Patents

"Air cooling and purification apparatus intended for a cryogenic air distillation unit" Download PDF

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Publication number
US20130152629A1
US20130152629A1 US13/808,931 US201113808931A US2013152629A1 US 20130152629 A1 US20130152629 A1 US 20130152629A1 US 201113808931 A US201113808931 A US 201113808931A US 2013152629 A1 US2013152629 A1 US 2013152629A1
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United States
Prior art keywords
cylinders
air
tower
building
purification
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.)
Abandoned
Application number
US13/808,931
Inventor
Patrice Cavagne
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
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 LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Assigned to L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE reassignment L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CAVAGNE, PATRICE
Publication of US20130152629A1 publication Critical patent/US20130152629A1/en
Abandoned 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
    • 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
    • F25J3/04157—Afterstage cooling and so-called "pre-cooling" of the feed air upstream the air purification unit and main heat exchange line
    • 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
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/0489—Modularity and arrangement of parts of the air fractionation unit, in particular of the cold box, e.g. pre-fabrication, assembling and erection, dimensions, horizontal layout "plot"
    • 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
    • F25J2205/30—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes
    • F25J2205/32—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes as direct contact cooling tower to produce a cooled gas stream, e.g. direct contact after cooler [DCAC]
    • 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
    • F25J2205/60—Processes or apparatus using other separation and/or other processing means using adsorption on solid adsorbents, e.g. by temperature-swing adsorption [TSA] at the hot or cold end

Definitions

  • the present invention relates to an air cooling and purification apparatus intended for a cryogenic air distillation unit.
  • the air is compressed in a compressor and then cooled by direct exchange of heat with air in a cooling tower.
  • the cooled air is then purified.
  • the purification processes in the air separation units chiefly remove water and CO 2 from the air before it enters the cryogenic distillation unit positioned in a cold box.
  • a set of valves and pipework allow carriage of the air that is to be purified and of the impure nitrogen used for regenerating the purification cylinders. This set of valves and piping is laid “flat” on the ground where it occupies a great deal of space. The ratio of the height to the length of the set is close to 1.
  • the air cooling tower that cools by direct contact with the water is installed between the two purification cylinders.
  • One subject of the invention provides an apparatus for cooling and purifying a stream of air, comprising a cooling tower that cools by direct contact with water, two purification cylinders, each of vertical axis, a pipe for conveying water to the cooling tower, a pipe for conveying air to the cooling tower, the tower being located between the two cylinders, a pipe for conveying cooled air from the tower to the purification cylinders and a set of valves and piping connecting the two cylinders to the cooling tower, characterized in that the apparatus comprises a building, the set being situated inside the building and the two cylinders and the tower being outside the building, the two cylinders and the set being positioned on either side of a wall of the building, with the cylinders positioned along the wall.
  • Another subject of the invention provides an air separation apparatus comprising a cooling and purifying apparatus as described hereinabove.
  • the air separation apparatus may comprise a compressor inside the building which is an air compressor connected to the cooling tower and/or a turbine, inside the building, which is an air turbine connected to the purification cylinders and/or a distillation column inside the building and connected to the purification cylinders.
  • FIG. 1 represents an apparatus in accordance with an embodiment of the invention.
  • FIG. 1 illustrates an apparatus according to an embodiment of the invention.
  • the apparatus comprises a cooling tower 1 that cools by direct contact with water, two purification cylinders 3 A, 3 B for purifying the air with respect to water and with respect to CO 2 and a building 5 containing at least one set 7 of piping and valves to allow the air from the tower 1 to be conveyed to the cylinders 3 A, 3 B.
  • Some of the piping of the set 7 passes through the wall 9 of the building 5 .
  • the wall 9 is the longest wall of the building 5 which is of rectangular section. The ratio between the length of the wall 9 and the width of the building is preferably greater than 2.
  • the ratio between the dimension of the set 7 in the vertical direction and the dimension in the horizontal direction is less than 1.
  • the two cylinders 3 A, 3 B and the tower are arranged along the wall 9 in such a way that their centres, viewed from above, form a straight line parallel to the wall.
  • the tower is positioned on the mid-line between the two cylinders.
  • the tower 1 can be slightly closer to or further away from the wall 9 than the two cylinders 3 A, 3 B, so that the centres of the tower and of the two cylinders form an obtuse-angled triangle.
  • the building 5 may also contain a compressor and/or a turbine and/or a distillation column of the air separation apparatus of which the cooling and purification apparatus forms part.
  • the air separation apparatus may comprise a compressor inside the building 5 which is an air compressor connected to the cooling tower 1 and/or a turbine, inside the building 5 , which is an air turbine connected to the purification cylinders 3 A, 3 B and/or a distillation column inside the building 5 and connected to the purification cylinders 3 A, 3 B.

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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)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

An apparatus for cooling and purifying a stream of air comprises a building, a cooling tower, for cooling by direct contact with water, two purification bottles, each of vertical axis, a pipe for sending water to the cooling tower, a pipe for sending air to the cooling tower, a pipe for sending cooled air from the tower to the purification bottles and a system of valves and piping for connecting the two bottles to the cooling tower, this assembly being located inside the building, and the two bottles and the tower being outside the building, the two bottles and the assembly being placed on either side of a wall of the building, the bottles being placed along the wall and the tower being positioned between the two bottles.

Description

    CROSS REFERENCE TO RELATED APPLICATIONS
  • This application is a §371 of International PCT Application PCT/EP2011/060417, filed Jun. 22, 2011, which claims the benefit of FR1055603, filed Jul. 9, 2010, both of which are herein incorporated by reference in their entireties.
    • TECHNICAL FIELD OF THE INVENTION
  • The present invention relates to an air cooling and purification apparatus intended for a cryogenic air distillation unit.
    • BACKGROUND
  • In an apparatus that separates air by cryogenic distillation, the air is compressed in a compressor and then cooled by direct exchange of heat with air in a cooling tower. The cooled air is then purified. The purification processes in the air separation units chiefly remove water and CO2 from the air before it enters the cryogenic distillation unit positioned in a cold box. A set of valves and pipework allow carriage of the air that is to be purified and of the impure nitrogen used for regenerating the purification cylinders. This set of valves and piping is laid “flat” on the ground where it occupies a great deal of space. The ratio of the height to the length of the set is close to 1.
  • When installing this set of valves and piping inside a new building (for reasons of excessive cold or heat or for any other reason) it is advantageous to reduce the width of this set in order to reduce the width of the building that has to be erected. Likewise, to install this set on an existing building (which tends to be somewhat long and not very wide), reducing the width of this set of pipework and valves can be of considerable help.
  • One of the ways of reducing the width of this set is, through a different design of pipework, to lengthen this set. The ratio between the height and the width of the set then becomes very much smaller than 1.
  • As a result, the inter-axis distance of these purification cylinders connected to this set will also lengthen.
  • An apparatus according to the preamble of claim 1 is described in EP-A-1672301.
    • SUMMARY OF THE INVENTION
  • According to the invention, the air cooling tower that cools by direct contact with the water is installed between the two purification cylinders.
  • One subject of the invention provides an apparatus for cooling and purifying a stream of air, comprising a cooling tower that cools by direct contact with water, two purification cylinders, each of vertical axis, a pipe for conveying water to the cooling tower, a pipe for conveying air to the cooling tower, the tower being located between the two cylinders, a pipe for conveying cooled air from the tower to the purification cylinders and a set of valves and piping connecting the two cylinders to the cooling tower, characterized in that the apparatus comprises a building, the set being situated inside the building and the two cylinders and the tower being outside the building, the two cylinders and the set being positioned on either side of a wall of the building, with the cylinders positioned along the wall.
  • According to other optional features of the apparatus:
      • the center of the tower viewed from above is situated on the mid-line between the centers of the two cylinders, viewed from above;
      • the centers of the two cylinders and of the tower when viewed from above form a straight line;
      • the centers of the two cylinders and of the tower when viewed from above form an obtuse-angled triangle;
      • the building also contains at least one compressor and/or at least one turbine and/or at least one distillation column;
      • the ratio between the dimension of the set in the vertical direction and the dimension in the horizontal direction is less than 1;
      • the wall constitutes the longest wall of the building, the building being of rectangular section.
      • the ratio between the length of the wall and the width of the building is greater than 2.
  • Another subject of the invention provides an air separation apparatus comprising a cooling and purifying apparatus as described hereinabove.
  • The air separation apparatus may comprise a compressor inside the building which is an air compressor connected to the cooling tower and/or a turbine, inside the building, which is an air turbine connected to the purification cylinders and/or a distillation column inside the building and connected to the purification cylinders.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • These and other features, aspects, and advantages of the present invention will become better understood with regard to the following description, claims, and accompanying drawings. It is to be noted, however, that the drawings illustrate only several embodiments of the invention and are therefore not to be considered limiting of the invention's scope as it can admit to other equally effective embodiments.
  • FIG. 1 represents an apparatus in accordance with an embodiment of the invention.
    •  DETAILED DESCRIPTION
  • The invention will be described in greater detail with reference to the figure. FIG. 1 illustrates an apparatus according to an embodiment of the invention.
  • The apparatus comprises a cooling tower 1 that cools by direct contact with water, two purification cylinders 3A, 3B for purifying the air with respect to water and with respect to CO2 and a building 5 containing at least one set 7 of piping and valves to allow the air from the tower 1 to be conveyed to the cylinders 3A, 3B. Some of the piping of the set 7 passes through the wall 9 of the building 5. The wall 9 is the longest wall of the building 5 which is of rectangular section. The ratio between the length of the wall 9 and the width of the building is preferably greater than 2.
  • The ratio between the dimension of the set 7 in the vertical direction and the dimension in the horizontal direction is less than 1.
  • The two cylinders 3A, 3B and the tower are arranged along the wall 9 in such a way that their centres, viewed from above, form a straight line parallel to the wall. The tower is positioned on the mid-line between the two cylinders.
  • The tower 1 can be slightly closer to or further away from the wall 9 than the two cylinders 3A, 3B, so that the centres of the tower and of the two cylinders form an obtuse-angled triangle.
  • The building 5 may also contain a compressor and/or a turbine and/or a distillation column of the air separation apparatus of which the cooling and purification apparatus forms part.
  • The air separation apparatus may comprise a compressor inside the building 5 which is an air compressor connected to the cooling tower 1 and/or a turbine, inside the building 5, which is an air turbine connected to the purification cylinders 3A, 3B and/or a distillation column inside the building 5 and connected to the purification cylinders 3A, 3B.

Claims (15)

1-14. (canceled)
15. An apparatus for cooling and purifying a stream of air comprising:
a cooling tower that cools by direct contact with water;
two purification cylinders, each of vertical axis;
a pipe for conveying water to the cooling tower, the tower being located between the two cylinders;
a pipe for conveying air to the cooling tower;
a pipe for conveying cooled air from the tower to the purification cylinders;
a set of valves and piping connecting the two cylinders to the cooling tower; and
a building,
wherein the set of valves and piping are disposed inside the building, wherein the two purification cylinders and the cooling tower are disposed outside the building, wherein the two cylinders and the set of valves and piping are positioned on either side of a wall of the building, with the purification cylinders positioned along the wall.
16. The apparatus as claimed in claim 15, in which the center of the tower viewed from above is situated on the mid line between the centers of the two cylinders, viewed from above.
17. The apparatus as claimed in claim 15, wherein the centers of the two cylinders and of the tower when viewed from above form a straight line.
18. The apparatus as claimed in claim 15, wherein the centers of the two cylinders and of the tower when viewed from above form an obtuse angled triangle.
19. The apparatus as claimed in claim 15, in which the building further comprises a device selected from the group consisting of a compressor, a turbine, a distillation column, and combinations thereof
20. The apparatus as claimed in claim 15, in which the ratio between the dimension of the set of valves and piping in the vertical direction and the dimension in the horizontal direction is less than 1.
21. The apparatus as claimed in claim 15, in which the wall constitutes the longest wall of the building, the building being of rectangular section.
22. The apparatus as claimed in claim 21, in which the ratio between the length of the wall and the width of the building is greater than 2.
23. The apparatus as claimed in claim 15, in which the tower is closer to the wall than the two cylinders.
24. The apparatus as claimed in claim 15, in which the tower is further away from the wall than the two cylinders.
25. The apparatus as claimed in claim 15, wherein the apparatus is used to provide cooling and purification of air for an air separation apparatus.
26. The apparatus as claimed in claim 19, wherein the apparatus is used to provide cooling and purification of air for an air separation apparatus, wherein the compressor is an air compressor connected to the cooling tower.
27. The apparatus as claimed in claim 19, wherein the apparatus is used to provide cooling and purification of air for an air separation apparatus, wherein the turbine is an air turbine connected to the purification cylinders.
28. The apparatus as claimed in claim 19, wherein the apparatus is used to provide cooling and purification of air for an air separation apparatus, wherein the distillation column is an air distillation column connected to the purification cylinders.
US13/808,931 2010-07-09 2011-06-22 "Air cooling and purification apparatus intended for a cryogenic air distillation unit" Abandoned US20130152629A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1055603A FR2962526B1 (en) 2010-07-09 2010-07-09 APPARATUS FOR COOLING AND PURIFYING AIR FOR A CRYOGENIC AIR DISTILLATION UNIT
FR1055603 2010-07-09
PCT/EP2011/060417 WO2012004125A2 (en) 2010-07-09 2011-06-22 Air cooling and purification apparatus intended for a cryogenic air distillation unit

Publications (1)

Publication Number Publication Date
US20130152629A1 true US20130152629A1 (en) 2013-06-20

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ID=43868145

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US13/808,931 Abandoned US20130152629A1 (en) 2010-07-09 2011-06-22 "Air cooling and purification apparatus intended for a cryogenic air distillation unit"

Country Status (8)

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US (1) US20130152629A1 (en)
EP (1) EP2591299B1 (en)
CN (1) CN103299146B (en)
CA (1) CA2803147C (en)
FR (1) FR2962526B1 (en)
RU (1) RU2557151C2 (en)
UA (1) UA107597C2 (en)
WO (1) WO2012004125A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5412954A (en) * 1992-09-16 1995-05-09 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Precedes Georges Claude Apparatus for cryogenic treatment, such as air distillation
US5461871A (en) * 1993-06-03 1995-10-31 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Installation for the distillation of air
US6148637A (en) * 1998-02-06 2000-11-21 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Air-distillation plant and corresponding cold box
US20060156759A1 (en) * 2004-12-03 2006-07-20 Andreas Brox Apparatus for the low-temperature separation of a gas mixture, in particular air

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3143412A (en) * 1960-11-28 1964-08-04 Dravo Corp Method of enriching the oxygen content of air supplied to blast furnaces
DE10342788A1 (en) * 2003-09-15 2005-04-07 Linde Ag Process engineering plant for handling of application fluid has rectification columns and main heat exchanger located in cold chamber, and at least a section of warm pipes in warm chamber
FR2929385A1 (en) * 2008-03-28 2009-10-02 Air Liquide Air separation apparatus for use with distillation column, has unit sending processed air flows coming from exchangers to average or low pressure column without mixing air flows in downstream of exchangers and in upstream of double column

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5412954A (en) * 1992-09-16 1995-05-09 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Precedes Georges Claude Apparatus for cryogenic treatment, such as air distillation
US5461871A (en) * 1993-06-03 1995-10-31 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Installation for the distillation of air
US6148637A (en) * 1998-02-06 2000-11-21 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Air-distillation plant and corresponding cold box
US20060156759A1 (en) * 2004-12-03 2006-07-20 Andreas Brox Apparatus for the low-temperature separation of a gas mixture, in particular air

Also Published As

Publication number Publication date
EP2591299B1 (en) 2018-10-17
WO2012004125A2 (en) 2012-01-12
CA2803147C (en) 2018-04-17
FR2962526A1 (en) 2012-01-13
CN103299146A (en) 2013-09-11
RU2557151C2 (en) 2015-07-20
EP2591299A2 (en) 2013-05-15
RU2013105495A (en) 2014-08-20
WO2012004125A3 (en) 2013-10-10
UA107597C2 (en) 2015-01-26
FR2962526B1 (en) 2014-07-04
CN103299146B (en) 2016-02-10
CA2803147A1 (en) 2012-01-12

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Owner name: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'E

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CAVAGNE, PATRICE;REEL/FRAME:029911/0868

Effective date: 20130206

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION