FR2962799A1 - COOLING ASSEMBLY AND APPARATUS FOR AIR SEPARATION BY CRYOGENIC DISTILLATION COMPRISING SUCH A COOLING ASSEMBLY - Google Patents

COOLING ASSEMBLY AND APPARATUS FOR AIR SEPARATION BY CRYOGENIC DISTILLATION COMPRISING SUCH A COOLING ASSEMBLY Download PDF

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FR2962799A1
FR2962799A1 FR1055722A FR1055722A FR2962799A1 FR 2962799 A1 FR2962799 A1 FR 2962799A1 FR 1055722 A FR1055722 A FR 1055722A FR 1055722 A FR1055722 A FR 1055722A FR 2962799 A1 FR2962799 A1 FR 2962799A1
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Prior art keywords
tower
exchange
line
nitrogen
air
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Granted
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FR1055722A
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French (fr)
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FR2962799B1 (en
Inventor
Patrice Cavagne
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Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Air Liquide SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Priority to FR1055722A priority Critical patent/FR2962799B1/en
Priority to US13/808,946 priority patent/US20130111950A1/en
Priority to PCT/FR2011/051670 priority patent/WO2012007691A2/en
Priority to EP11741665.1A priority patent/EP2593739B1/en
Priority to JP2013519137A priority patent/JP5902161B2/en
Priority to CN201180034155.1A priority patent/CN103299147B/en
Publication of FR2962799A1 publication Critical patent/FR2962799A1/en
Application granted granted Critical
Publication of FR2962799B1 publication Critical patent/FR2962799B1/en
Expired - Fee Related 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
    • F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
    • F25J3/04218—Parallel arrangement of the main heat exchange line in cores having different functions, e.g. in low pressure and high pressure cores
    • 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
    • F25J2205/30—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes
    • F25J2205/34—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes as evaporative cooling tower to produce chilled water, e.g. evaporative water chiller [EWC]
    • 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
    • F25J2290/12—Particular process parameters like pressure, temperature, ratios
    • 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
    • F25J2290/42—Modularity, pre-fabrication of modules, assembling and erection, horizontal layout, i.e. plot plan, and vertical arrangement of parts of the cryogenic unit, e.g. of the cold box

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

Un ensemble de refroidissement est constituée par une tour de refroidissement (1) permettant l'échange de chaleur et de masse entre de l'eau à refroidir envoyée en haut de la tour et de l'azote provenant d'un système de colonnes de distillation d'air (9), la partie inférieure de la tour comprenant une entrée reliée à une conduite d'azote et la conduite d'azote étant reliée à au moins un corps d'échangeur d'une ligne d'échange (3A,3B) capable de réchauffer l'azote provenant du système de colonnes par échange de chaleur avec de l'air à refroidir destiné au système de colonnes et la tour est disposée au-dessus d'au moins une partie de la ligne d'échange.A cooling assembly is constituted by a cooling tower (1) allowing the exchange of heat and mass between the water to be cooled sent to the top of the tower and the nitrogen coming from a system of distillation columns. of air (9), the lower part of the tower comprising an inlet connected to a nitrogen line and the nitrogen line being connected to at least one exchanger body of an exchange line (3A, 3B ) capable of heating the nitrogen from the column system by heat exchange with air to be cooled for the column system and the tower is disposed above at least a portion of the exchange line.

Description

La présente invention concerne un ensemble de refroidissement et appareil de séparation d'air par distillation d'air comprenant un tel ensemble de refroidissement. Il est connu de « Industrial Gas Handbook » de Frank Kerry, CRC Press, pages 112 à 113, d'utiliser une tour de refroidissement pour refroidir l'air destiné à la séparation d'air, dans un système de distillation, par contact direct avec de l'eau dans une première tour. L'air est ensuite envoyé à un système d'épuration pour le sécher et l'épurer en dioxyde de carbone. L'eau utilisée pour le refroidissement est évidemment chauffée dans la première tour. Pour la refroidir et ainsi pouvoir la recycler à la première tour, l'eau est refroidie dans une deuxième tour par contact direct avec de l'azote provenant du système de distillation d'air. En amont de la deuxième tour, l'azote est réchauffé dans la ligne d'échange où se refroidit l'air à distiller. Comme signalé par Kerry, ce débit d'azote peut constituer un pourcentage considérable de l'air distillé. The present invention relates to a cooling assembly and apparatus for separating air by air distillation comprising such a cooling assembly. It is known from Frank Kerry's Industrial Gas Handbook, CRC Press, pages 112-113, to use a cooling tower to cool air for air separation, in a distillation system, by direct contact with water in a first round. The air is then sent to a purification system to dry and purify it with carbon dioxide. The water used for cooling is obviously heated in the first tower. To cool it and thus be able to recycle it in the first tower, the water is cooled in a second tower by direct contact with nitrogen from the air distillation system. Upstream of the second tower, the nitrogen is heated in the exchange line where the air to be distilled is cooled. As reported by Kerry, this nitrogen flow can be a considerable percentage of the distilled air.

EP-A-1666822 montre la première et la deuxième tour disposées sur le sol, la deuxième tour étant à proximité de la sortie de la ligne d'échange principale. Des pompes permettant le transfert de l'eau glacée obtenue dans la deuxième tour vers la première tour sont généralement installées au sol à coté de la deuxième tour. Cette deuxième tour peut être réalisée en acier ou en béton, de section ronde ou carré. Dans le cas du procédé produisant de l'azote à basse pression, par exemple un appareil de séparation d'air devant fournir l'oxygène pour une oxycombustion, les pertes de charges dans la ligne d'azote résiduaire sortant de la ligne d'échange vers cette deuxième tour sont critiques car elles fixent la pression de la colonne basse pression (et donc du compresseur d'air) qui est uniquement liée à la deuxième tour où s'effectue l'échange de chaleur entre l'azote et l'eau. La tour, de section ronde ou carré, sera installée en hauteur, par exemple sur la toiture de la ligne d'échange principale afin de permettre à la ligne d'azote résiduaire de rentrer directement dans la tour sans coudes et avec un minimum de longueur de tuyauterie, ceux-ci étant générateurs de perte de 35 charge. EP-A-1666822 shows the first and second tower disposed on the ground, the second tower being close to the exit of the main exchange line. Pumps for transferring chilled water obtained in the second tower to the first tower are usually installed on the ground next to the second tower. This second tower can be made of steel or concrete, of round or square section. In the case of the process producing low pressure nitrogen, for example an air separation apparatus for supplying oxygen for oxycombustion, the pressure losses in the waste nitrogen line leaving the exchange line towards this second tower are critical because they fix the pressure of the low pressure column (and thus of the air compressor) which is only related to the second tower where the heat exchange between the nitrogen and the water takes place . The tower, of round or square section, will be installed in height, for example on the roof of the main exchange line to allow the residual nitrogen line to enter directly into the tower without bends and with a minimum of length of piping, these being generators of loss of load.

Cette tour pourra être en acier, en béton ou en plastique. La tour sera de préférence supportée par un prolongement de la structure de l'enveloppe dans laquelle est installée la ligne d'échange ou par tout autre moyen de support adéquat. This tower may be steel, concrete or plastic. The tower will preferably be supported by an extension of the structure of the envelope in which the exchange line is installed or by any other suitable support means.

Selon un objet de l'invention, il est prévu un ensemble de refroidissement constituée par une tour de refroidissement permettant l'échange de chaleur et de masse entre de l'eau à refroidir envoyée en haut de la tour et de l'azote provenant d'un système de colonnes de distillation d'air, la partie inférieure de la tour comprenant une entrée reliée à une conduite d'azote et la conduite d'azote étant reliée à au moins un corps d'échangeur d'une ligne d'échange capable de réchauffer l'azote provenant du système de colonnes par échange de chaleur avec de l'air à refroidir destiné au système de colonnes caractérisé en ce que la tour est disposée au-dessus d'au moins une partie de la ligne d'échange. According to an object of the invention, there is provided a cooling assembly constituted by a cooling tower allowing the exchange of heat and mass between water to be cooled sent to the top of the tower and nitrogen from a system of air distillation columns, the lower part of the tower comprising an inlet connected to a nitrogen line and the nitrogen line being connected to at least one exchanger body of a line of exchange capable of heating the nitrogen from the column system by heat exchange with air to be cooled for the column system, characterized in that the tower is disposed above at least part of the exchange line .

Selon d'autres caractéristiques facultatives : - la tour est supportée sur au moins une partie de la ligne d'échange ; - la tour est supportée par une structure montée sur au moins une partie de la ligne d'échange ; - le point le plus bas de la tour est au-dessus du ou des corps d'échangeur ; - la conduite d'azote est reliée à un point au-dessus de la cuve de la tour de refroidissement ; - l'ensemble comprend deux lignes d'échange, chacune comprenant plusieurs corps d'échange, les deux lignes d'échange ayant de préférence substantiellement la même hauteur ; - la tour est supportée par une structure montée sur les deux lignes d'échange ; - la tour est disposée au-dessus d'une espace entre les deux lignes d'échange ; - au moins une conduite d'arrivée d'air reliée aux deux lignes d'échange passe dans l'espace en dessous de la tour. Selon un autre objet de l'invention, il est prévu un appareil de séparation d'air par distillation cryogénique comprenant un ensemble tel que décrit ci-dessus un système de colonnes, une conduite d'envoi d'air à la ligne d'échange, une conduite d'envoi d'air de la ligne d'échange, une conduite d'envoi d'air de la ligne d'échange au système de colonnes et la conduite d'azote étant reliée au système de colonnes. L'invention sera décrite en plus de détail en se référant à la figure, qui représente un ensemble selon l'invention incorporée dans une unité de séparation d'air par distillation cryogénique. L'ensemble de refroidissement comprend une tour 1, deux lignes d'échange basse pression 3A, 3B, une ligne d'échange haute pression 5. L'appareil de séparation d'air comprend en plus des turbines d'air 7, des colonnes de distillation et un ensemble de tuyauteries et de vannes 9, 11. L'air est refroidi épuré dans une unité d'épuration, refroidi dans les lignes d'échange 3A, 3B, détendu dans au moins une turbine 7 et envoyé à une colonne 9 pour être séparé. L'azote produit se réchauffe dans les lignes d'échange 3A, 3B et est envoyé à la tour de refroidissement 1 où il refroidit l'eau destinée à refroidir l'air. Les lignes d'échange 3A, 3B sont les échangeurs de fluides à basse pression et sont séparées par un espace. Chaque ligne d'échange comprend un certain nombre de corps (ici huit) qui reçoivent de l'air à refroidir et de l'azote à réchauffer. According to other optional features: - the tower is supported on at least part of the exchange line; the tower is supported by a structure mounted on at least a part of the exchange line; - the lowest point of the tower is above the exchanger body or bodies; - the nitrogen line is connected to a point above the tank of the cooling tower; the set comprises two exchange lines, each comprising several exchange bodies, the two exchange lines preferably having substantially the same height; - the tower is supported by a structure mounted on the two exchange lines; the tower is disposed above a space between the two exchange lines; - At least one air supply line connected to the two exchange lines passes into the space below the tower. According to another object of the invention, there is provided an apparatus for separating air by cryogenic distillation comprising an assembly as described above a column system, a pipe for sending air to the exchange line. , an air supply line of the exchange line, an air supply line from the exchange line to the column system and the nitrogen line being connected to the column system. The invention will be described in more detail with reference to the figure, which shows an assembly according to the invention incorporated in an air separation unit by cryogenic distillation. The cooling assembly comprises a tower 1, two low-pressure exchange lines 3A, 3B, a high-pressure exchange line 5. The air separation apparatus further comprises air turbines 7, columns distillation unit and a set of pipes and valves 9, 11. The air is cooled purified in a purification unit, cooled in the exchange lines 3A, 3B, expanded in at least one turbine 7 and sent to a column 9 to be separated. The nitrogen produced heats up in the exchange lines 3A, 3B and is sent to the cooling tower 1 where it cools the water intended to cool the air. The exchange lines 3A, 3B are the fluid exchangers at low pressure and are separated by a space. Each exchange line comprises a number of bodies (here eight) which receive air to cool and nitrogen to heat.

L'azote réchauffé est collecté dans des conduites 15 qui débouchent quelques mètres au-dessus du fond de la tour 1. La conduite d'azote 15 est plus élevée que les autres conduites et par ce fait est plus facile à relier à la tour 1. La tour 1 est soutenue par une structure 13 qui repose sur les bouts des deux lignes d'échange 3A, 3B. Dans le cas où il n'y a qu'une seule ligne d'échange, la structure 13 se reposera sur le sol ou un autre élément. Les conduites d'arrivée et de départ d'eau ne sont pas illustrées sur la figure. The heated nitrogen is collected in pipes 15 which open a few meters above the bottom of the tower 1. The nitrogen pipe 15 is higher than the other pipes and therefore is easier to connect to the tower 1 The tower 1 is supported by a structure 13 which rests on the ends of the two exchange lines 3A, 3B. In the case where there is only one exchange line, the structure 13 will rest on the ground or another element. The water inlet and outlet pipes are not shown in the figure.

Claims (10)

REVENDICATIONS1. Ensemble de refroidissement constitué par une tour de refroidissement (1) permettant l'échange de chaleur et de masse entre de l'eau à refroidir envoyée en haut de la tour et de l'azote provenant d'un système de colonnes de distillation d'air (9), la partie inférieure de la tour comprenant une entrée reliée à une conduite d'azote et la conduite d'azote étant reliée à au moins un corps d'échangeur d'une ligne d'échange (3A,3B) capable de réchauffer l'azote provenant du système de colonnes par échange de chaleur avec de l'air à refroidir destiné au système de colonnes caractérisé en ce que la tour est disposée au-dessus d'au moins une partie de la ligne d'échange. REVENDICATIONS1. Cooling unit consisting of a cooling tower (1) allowing the exchange of heat and mass between water to be cooled sent to the top of the tower and nitrogen from a distillation column system. air (9), the lower part of the tower comprising an inlet connected to a nitrogen pipe and the nitrogen pipe being connected to at least one exchanger body of an exchange line (3A, 3B) capable of of heating the nitrogen from the column system by heat exchange with air to be cooled for the column system, characterized in that the tower is disposed above at least a part of the exchange line. 2. Ensemble selon la revendication 1 dans lequel la tour (1) est supportée sur au moins une partie de la ligne d'échange (3A,3B). 2. The assembly of claim 1 wherein the tower (1) is supported on at least a portion of the exchange line (3A, 3B). 3. Ensemble selon la revendication 1 ou 2 dans lequel la tour (1) est supportée par une structure (13) montée sur au moins une partie de la ligne d'échange (3A,3B). 20 3. An assembly according to claim 1 or 2 wherein the tower (1) is supported by a structure (13) mounted on at least a portion of the exchange line (3A, 3B). 20 4. Ensemble selon l'une des revendications précédentes dans lequel le point le plus bas de la tour (1) est au-dessus du ou des corps d'échangeur. 4. Assembly according to one of the preceding claims wherein the lowest point of the tower (1) is above the exchanger body or bodies. 5. Ensemble selon l'une des revendications précédentes dans lequel la conduite d'azote est reliée à un point au-dessus de la cuve de la tour de 25 refroidissement (1). 5. An assembly according to one of the preceding claims wherein the nitrogen line is connected to a point above the tank of the cooling tower (1). 6. Ensemble selon l'une des revendications précédentes comprenant deux lignes d'échange, (3A,3B) chacune comprenant plusieurs corps d'échange, les deux lignes d'échange ayant de préférence substantiellement la 30 même hauteur. 6. An assembly according to one of the preceding claims comprising two exchange lines, (3A, 3B) each comprising a plurality of exchange bodies, the two exchange lines preferably having substantially the same height. 7. Ensemble selon la revendication 6 dans lequel la tour (1) est supportée par une structure (13) montée sur les deux lignes d'échange (3A,3B).15 7. The assembly of claim 6 wherein the tower (1) is supported by a structure (13) mounted on the two exchange lines (3A, 3B). 8. Ensemble selon la revendication 6 ou 7 dans lequel la tour (1) est disposée au-dessus d'une espace entre les deux lignes d'échange (3A,3B). 8. An assembly according to claim 6 or 7 wherein the tower (1) is disposed above a space between the two exchange lines (3A, 3B). 9. Ensemble selon la revendication 8 dans lequel au moins une conduite d'arrivée d'air reliée aux deux lignes d'échange (3A,3B) passe dans l'espace en dessous de la tour. 9. The assembly of claim 8 wherein at least one air supply line connected to the two exchange lines (3A, 3B) passes into the space below the tower. 10. Unité de séparation d'air par distillation cryogénique comprenant un ensemble selon l'une des revendications précédentes, un système de colonnes (9), une conduite d'envoi d'air à la ligne d'échange (3A,3B), une conduite d'envoi d'air de la ligne d'échange, une conduite d'envoi d'air de la ligne d'échange au système de colonnes et la conduite d'azote étant reliée au système de colonnes. 10. A cryogenic distillation air separation unit comprising an assembly according to one of the preceding claims, a column system (9), an air supply line to the exchange line (3A, 3B), an air supply line of the exchange line, an air supply line from the exchange line to the column system and the nitrogen line being connected to the column system.
FR1055722A 2010-07-13 2010-07-13 COOLING ASSEMBLY AND APPARATUS FOR AIR SEPARATION BY CRYOGENIC DISTILLATION COMPRISING SUCH A COOLING ASSEMBLY Expired - Fee Related FR2962799B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR1055722A FR2962799B1 (en) 2010-07-13 2010-07-13 COOLING ASSEMBLY AND APPARATUS FOR AIR SEPARATION BY CRYOGENIC DISTILLATION COMPRISING SUCH A COOLING ASSEMBLY
US13/808,946 US20130111950A1 (en) 2010-07-13 2011-07-12 Cooling unit, and apparatus for separating air by means of cryogenic distillation including such cooling unit
PCT/FR2011/051670 WO2012007691A2 (en) 2010-07-13 2011-07-12 Cooling unit, and apparatus for separating air by means of cryogenic distillation including such a cooling unit
EP11741665.1A EP2593739B1 (en) 2010-07-13 2011-07-12 Cooling unit, and apparatus for separating air by means of cryogenic distillation including such a cooling unit
JP2013519137A JP5902161B2 (en) 2010-07-13 2011-07-12 COOLING DEVICE AND AIR SEPARATION DEVICE BY CRYSTAL DRYING EQUIPPED WITH COOLING DEVICE
CN201180034155.1A CN103299147B (en) 2010-07-13 2011-07-12 Cooling unit and the equipment for being separated air by low temperature distillation comprising this cooling unit

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FR3052242B1 (en) * 2016-06-06 2019-04-19 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude CONSTRUCTION ELEMENT OF MASS AND / OR HEAT EXCHANGE APPARATUS, ASSEMBLY OF TWO ELEMENTS AND EXCHANGE METHOD USING ASSEMBLY

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JP5902161B2 (en) 2016-04-13
EP2593739B1 (en) 2017-04-12
CN103299147B (en) 2015-10-07
WO2012007691A3 (en) 2013-10-10
FR2962799B1 (en) 2014-07-04
JP2014500937A (en) 2014-01-16
CN103299147A (en) 2013-09-11
US20130111950A1 (en) 2013-05-09
EP2593739A2 (en) 2013-05-22

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