CA2235054A1 - System for separating a gaseous mixture by distillation - Google Patents

System for separating a gaseous mixture by distillation Download PDF

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Publication number
CA2235054A1
CA2235054A1 CA002235054A CA2235054A CA2235054A1 CA 2235054 A1 CA2235054 A1 CA 2235054A1 CA 002235054 A CA002235054 A CA 002235054A CA 2235054 A CA2235054 A CA 2235054A CA 2235054 A1 CA2235054 A1 CA 2235054A1
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CA
Canada
Prior art keywords
columns
section
column
same height
heads
Prior art date
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Abandoned
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CA002235054A
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French (fr)
Inventor
Olivier Bruder
Jean-Yves Lehman
Bernard Darredeau
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LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Individual
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Publication of CA2235054A1 publication Critical patent/CA2235054A1/en
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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
    • F25J3/04763—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
    • 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
    • F25J3/04406—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 dual pressure main column system
    • F25J3/04412—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 dual pressure main column system in a classical double column flowsheet, 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
    • 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
    • F25J3/04642—Recovering noble gases from air
    • F25J3/04648—Recovering noble gases from air argon
    • F25J3/04654—Producing crude argon in a crude argon column
    • F25J3/04666—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system
    • F25J3/04672—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser
    • F25J3/04678—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser cooled by oxygen enriched liquid from high pressure column bottoms
    • 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
    • F25J3/04642—Recovering noble gases from air
    • F25J3/04648—Recovering noble gases from air argon
    • F25J3/04654—Producing crude argon in a crude argon column
    • F25J3/04666—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system
    • F25J3/04672—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser
    • F25J3/04703—Producing crude argon in a crude argon column as a parallel working rectification column of the low pressure column in a dual pressure main column system having a top condenser being arranged in more than one vessel
    • 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
    • F25J3/04872—Vertical layout of cold equipments within in the cold box, e.g. columns, heat exchangers etc.
    • 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
    • F25J3/04872—Vertical layout of cold equipments within in the cold box, e.g. columns, heat exchangers etc.
    • F25J3/04878—Side by side arrangement of multiple vessels in a main column system, wherein the vessels are normally mounted one upon the other or forming different sections of the same 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
    • F25J2235/00—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams
    • F25J2235/02—Processes or apparatus involving steps for increasing the pressure or for conveying of liquid process streams using a pump in general or hydrostatic pressure increase
    • 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/62—Details of storing a fluid in a tank
    • 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
    • Y10S62/90—Triple column
    • 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
    • Y10S62/905—Column
    • 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
    • Y10S62/911—Portable

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

Une installation de séparation d'un mélange gazeux comprend au moins deux colonnes (1, 3, 5) ayant la même hauteur. Les têtes de deux des colonnes sont à la même hauteur.An installation for separating a gas mixture comprises at least two columns (1, 3, 5) having the same height. The heads of two of the columns are at the same height.

Description

CA 0223CiOci4 1998-04-08 La présente invention est relative à une installation de séparation d'un mélange gazeux par distillation et, en particulier, par distillation cryogénique.
Dans les installations de distillation cryogénique, un ensemble de colonnes de distillation est enfermé dans une boîte froide afin de l'isoler de la chaleur ambiante. La hauteur de la boîte froide est généralement déterminée par la hlauteur de la colonne la plus longue. De nos jours, pour produire de l'argon de moins de 1 ppm cl'oxygène par voie cryogénique, il faut installer jusqu'à 250 plateaux dans la colonne argon ce qui rend la boîte froide très haute et pose des problèmes d'instabilité. Elle contient de plus beaucoup o d'espaces vides qui doivent êb-e remplis de matière isolante.
DE-A-2633272 décrit une double colonne avec une colonne basse pression en deux tronçons, la lête des deux tronçons étant à la même hauteur.
Le but de la présente invention est de rendre les boîtes froides plus compacl:es et de réduire les espaces vides à l'intérieur.
Selon un objet de l'invention, il est prévu une installation de séparation d'un mélange gazeux par distillation comprenant au moins deux colonnes, les têtes de deux des colonnes étant à la même hauteur, caractérisée en ce.qu'au moins deux des colonnes ont la même hauteur.
Selon d'autres aspects de l'invention, il est prévu que:
- deux des colonnes Ollt la même hauteur et les têtes de ces colonnes sont à la même hauteur ~- les têtes de trois des colonnes sont à la même hauteur.
~- Ies têtes de toutes les colonnes sont à la même hauteur.
~ Ies colonnes sont aclaptées à la séparation de l'air et comprennent une première colonne capalble d'opérer à une moyenne pression, une deuxième colonne comprenant deux tronçons capables d'opérer à une basse pression, la première colonne et le premier tronçon étant reliés thermiquement par un rebouilleur-condenseul-, des moyens pour envoyer des fluides de la première colonne au deuxième tronçon et des moyens pour envoyer un gaz de tête du premier tronçon à la cuve du deuxième tronçon et un liquide de cuve du deuxième tronçon à la tête du premier tronçon, le deuxième tronçon (3B) ayant CA 0223~0~4 1998-04-08 éventuellement la même hauteur que la hauteur du premier tronçon et de la premièn3 colonne.
- quatre colonnes sont adaptées à la séparation de l'air dont deux colonnes adaptées à la séparation d'un mélange enrichi en argon.
- une des colonnes esl plus courte qu'au moins une des autres et en ce qu'un stockage est localisé dans l'espace en dessous de celle-là.
Un exemple de mise en oeuvre de l'invention va maintenant être décrit en regard des dessins annexés sur lesquels:
- la figure 1 représente! schématiquement une installation de production o d'oxygène et d'argon selon l'invention.
- la figure 2 représente schématiquement une installation de production d'azote et d'oxygène selon l'invention.
ILa figure 1 montre unle double colonne 1 constituée par une colonne moyenne pression 2 et une colonne basse pression 3, reliées thermiquement par un rebouilleur-condenseur. Une colonne argon en deux tronçons 5A, 5B
est alimentée en un fluide enrichi en argon provenant de la colonne basse pression. Les têtes des deux tronçons de la colonne argon 5 et la colonne basse pression 3 se trouvent au même niveau.
Cette disposition correspond à celle de EP-A-628 777, ce document ne divulguant pas cependant que les têtes des colonnes sont toutes au même niveau.
IJn stockage d'azote liquide 7 est situé dans l'espace en dessous de la colonne argon.
I a boîte froide 9 contient la double colonne 1, la colonne argon 5 et le stockage 7.
I a figure 2 montre une double colonne 1, dont la colonne basse pression est en deux tronçons 3A, 3B.
I es têtes des deux tronçons 3A, 3B sont au même niveau. La cuve du deuxième tronçon 3B est alimentée par du gaz de tête du premier tronçon 3A
et du liquide est renvoyé de la cuve du deuxième tronçon à la tête du premier tronçon.

CA 0223~0~4 1998-04-08 -,, 3 La hauteur du deuxième tronçon 3B est identique à la hauteur totale du premier tronçon 3A et la colonne moyenne pression 2.
On pourrait envisager de combiner les concepts des figures 1 et 2 avec une installation comprenant une colonne moyenne pression 2, une colonne 5 basse pression en deux sections 3A, 3B et une colonne argon en deux sections 5A, 5B. Dans ce cas, la section 3B de la colonne basse pression pourrait être située en dessous de la section 5A de la colonne argon (ou le contraire).
La figure 2 pourrait c~videmment être adaptée pour comprendre une colonne! argon alimentée par les sections 3A, 3B de la colonne basse pression.
Evidemment, I'installation de la figure 1 pourrait comprendre un stockage d'oxygène, d'azote ou d'argon en dessous de la section 5A. CA 0223CiOci4 1998-04-08 The present invention relates to an installation for separating a gas mixture by distillation and, in particular, by cryogenic distillation.
In cryogenic distillation installations, a set of distillation columns is enclosed in a cold box in order to isolate it from the ambient heat. The height of the cold box is usually determined by the height of the longest column. Nowadays, to produce argon of less than 1 ppm of oxygen by cryogenic way, it is necessary to install up to 250 trays in the argon column which makes the cold box very high and poses instability problems. It also contains a lot o empty spaces which must be filled with insulating material.
DE-A-2633272 describes a double column with a low column pressure in two sections, the head of the two sections being at the same height.
The object of the present invention is to make the cold boxes more compacl: es and reduce the empty spaces inside.
According to an object of the invention, there is provided a separation installation of a gaseous mixture by distillation comprising at least two columns, the heads of two of the columns being at the same height, characterized in that minus two of the columns have the same height.
According to other aspects of the invention, it is intended that:
- two of the Ollt columns the same height and the heads of these columns are at the same height ~ - the heads of three of the columns are at the same height.
~ - The heads of all the columns are at the same height.
~ Ies columns are suitable for air separation and include a first column capable of operating at medium pressure, a second column comprising two sections capable of operating at a low pressure, the first column and the first section being thermally connected by a reboiler-condenseul-, means for sending fluids from the first column to the second section and means for sending gas from head of the first section to the tank of the second section and a tank liquid of the second section at the head of the first section, the second section (3B) having CA 0223 ~ 0 ~ 4 1998-04-08 possibly the same height as the height of the first section and the first column.
- four columns are suitable for air separation, two of which are columns suitable for the separation of a mixture enriched in argon.
- one of the columns is shorter than at least one of the others and in this that a storage is located in the space below that one.
An example of implementation of the invention will now be described.
opposite the attached drawings in which:
- Figure 1 shows! schematically a production facility o of oxygen and argon according to the invention.
- Figure 2 schematically shows a production facility nitrogen and oxygen according to the invention.
Figure 1 shows a double column 1 consisting of a column medium pressure 2 and a low pressure column 3, thermally connected by a reboiler-condenser. An argon column in two sections 5A, 5B
is supplied with a fluid enriched with argon from the lower column pressure. The heads of the two sections of the argon 5 column and the column low pressure 3 are on the same level.
This provision corresponds to that of EP-A-628 777, this document does not not disclosing however that the column heads are all the same level.
IJn liquid nitrogen storage 7 is located in the space below the argon column.
The cold box 9 contains the double column 1, the argon column 5 and the storage 7.
I a Figure 2 shows a double column 1, the lower column pressure is in two sections 3A, 3B.
I es the heads of the two sections 3A, 3B are at the same level. The tank of second section 3B is supplied with overhead gas from the first section 3A
and liquid is returned from the tank of the second section to the head of the first section.

CA 0223 ~ 0 ~ 4 1998-04-08 -,, 3 The height of the second section 3B is identical to the total height of the first section 3A and the medium pressure column 2.
We could consider combining the concepts of Figures 1 and 2 with an installation comprising a medium pressure column 2, a column 5 low pressure in two sections 3A, 3B and an argon column in two sections 5A, 5B. In this case, section 3B of the low pressure column could be located below section 5A of the argon column (or the opposite).
Figure 2 could c ~ obviously be adapted to include a column! argon supplied by sections 3A, 3B of the low pressure column.
Obviously, the installation of Figure 1 could include a storage of oxygen, nitrogen or argon below section 5A.

Claims (8)

1. Installation de séparation d'un mélange gazeux par distillation comprenant au moins deux colonnes (1, 3, 5) les têtes de deux des colonnes étant à la même hauteur, caractérisée en ce qu'au moins deux des colonnes ont la même hauteur. 1. Installation for separating a gas mixture by distillation comprising at least two columns (1, 3, 5) the heads of two of the columns being at the same height, characterized in that at least two of the columns have the same height. 2. Installation selon la revendication 1 selon laquelle deux des colonnes ont la même hauteur et les têtes de ces colonnes sont à la même hauteur. 2. Installation according to claim 1 according to which two of columns have the same height and the heads of these columns are at the same height. 3. Installation selon les revendications 1 ou 2 caractérisée en ce que les têtes de trois des colonnes (1, 5A, 5B) sont à la même hauteur. 3. Installation according to claims 1 or 2 characterized in that the heads of three of the columns (1, 5A, 5B) are at the same height. 4. Installation selon les revendications 1, 2 ou 3 caractérisée en ce que les têtes de toutes les colonnes (1, 3, 5) sont à la même hauteur. 4. Installation according to claims 1, 2 or 3 characterized in that the heads of all the columns (1, 3, 5) are at the same height. 5. Installation selon l'une des revendications précédentes caractérisée en ce que les colonnes (1, 2, 3, 5) sont adaptées à la séparation de l'air et comprennent une première colonne (2B) capable d'opérer à une moyenne pression, une deuxième colonne comprenant deux tronçons (3A, 3B) capables d'opérer à une basse pression, la colonne moyenne pression et le premier tronçon (3A) étant reliées thermiquement par un rebouilleur-condenseur, des moyens pour envoyer des fluides de la colonne moyenne pression au deuxieme tronçon et des moyens pour envoyer un gaz de tête du premier tronçon à la cuve du deuxième tronçon et un liquide de cuve du deuxième tronçon à la tête du premier tronçon. 5. Installation according to one of the preceding claims, characterized in that the columns (1, 2, 3, 5) are suitable for the separation of air and include a first column (2B) capable of operating at an average pressure, a second column comprising two sections (3A, 3B) capable to operate at low pressure, the medium pressure column and the first section (3A) being thermally connected by a reboiler-condenser, means for sending fluids from the medium pressure column to the second section and means to send an overhead gas from the first tank section of the second section and tank liquid of the second section at the head of the first section. 6. Installation selon la revendication 5 dans laquelle le deuxième tronçon (3B) a la même hauteur que le premier tronçon et la première colonne. 6. Installation according to claim 5 wherein the second section (3B) has the same height as the first section and the first column. 7. Installation selon l'une des revendications précédentes caractérisée en ce qu'elle comprend quatre colonnes (2, 3, 5A, 5B) adaptées à la séparation de l'air dont deux colonnes (5A, 5B) adaptées à la séparation d'un mélange enrichi en argon. 7. Installation according to one of the preceding claims, characterized in that it comprises four columns (2, 3, 5A, 5B) adapted to the separation air, including two columns (5A, 5B) suitable for the separation of a mixture enriched with argon. 8. Installation selon l'une des revendications précédentes caractérisée en ce qu'une des colonnes (5) est plus courte qu'au moins une des autres et en ce qu'un stockage (7) est localisé dans l'espace en dessous de celle-là. 8. Installation according to one of the preceding claims, characterized in that one of the columns (5) is shorter than at least one of the others and in that a storage (7) is located in the space below that.
CA002235054A 1997-04-11 1998-04-08 System for separating a gaseous mixture by distillation Abandoned CA2235054A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9704484A FR2761897B1 (en) 1997-04-11 1997-04-11 INSTALLATION FOR SEPARATING A GAS MIXTURE BY DISTILLATION
FR9704484 1997-04-11

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JP (1) JPH1172285A (en)
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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN102016467A (en) * 2007-03-12 2011-04-13 乔治洛德方法研究和开发液化空气有限公司 Method and device for separating air by cryogenic distillation

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US6691532B2 (en) 2001-11-13 2004-02-17 The Boc Group, Inc. Air separation units
FR2946735B1 (en) * 2009-06-12 2012-07-13 Air Liquide APPARATUS AND METHOD FOR AIR SEPARATION BY CRYOGENIC DISTILLATION.
CN102425917B (en) * 2011-08-30 2013-04-10 杭州杭氧股份有限公司 Multifunctional rectifying tower
CA2900122C (en) * 2013-03-06 2023-10-31 Linde Aktiengesellschaft Air separation plant, method for obtaining a product containing argon, and method for creating an air separation plant
EP3614084A1 (en) * 2018-08-22 2020-02-26 Linde Aktiengesellschaft Method and installation for cryogenic decomposition of air

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DE2633272A1 (en) * 1976-07-23 1978-01-26 Linde Ag Dual-pressure rectification using two columns - the first having the high-pressure stage and part of the low-pressure
DE4317916A1 (en) * 1993-05-28 1994-12-01 Linde Ag Process and apparatus for the isolation of argon

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102016467A (en) * 2007-03-12 2011-04-13 乔治洛德方法研究和开发液化空气有限公司 Method and device for separating air by cryogenic distillation

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JPH1172285A (en) 1999-03-16
FR2761897A1 (en) 1998-10-16
EP0870524A1 (en) 1998-10-14
FR2761897B1 (en) 1999-05-14

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