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FR2917490A1 - Cold box for air separation apparatus, has air cleaning unit, separated fluid processing element or air compression unit separated in distillation column, where elements are mounted on external wall of enclosure - Google Patents

Cold box for air separation apparatus, has air cleaning unit, separated fluid processing element or air compression unit separated in distillation column, where elements are mounted on external wall of enclosure Download PDF

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Publication number
FR2917490A1
FR2917490A1 FR0755699A FR0755699A FR2917490A1 FR 2917490 A1 FR2917490 A1 FR 2917490A1 FR 0755699 A FR0755699 A FR 0755699A FR 0755699 A FR0755699 A FR 0755699A FR 2917490 A1 FR2917490 A1 FR 2917490A1
Authority
FR
France
Prior art keywords
enclosure
separated
cold box
air
box according
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Withdrawn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
FR0755699A
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French (fr)
Inventor
Benoit Davidian
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.)
Air Liquide SA
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
Priority to FR0755699A priority Critical patent/FR2917490A1/en
Publication of FR2917490A1 publication Critical patent/FR2917490A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/044—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a single pressure main column system only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • 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
    • F25J3/0204—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 characterised by the feed stream
    • F25J3/0223—H2/CO mixtures, i.e. synthesis gas; Water gas or shifted synthesis gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/0228—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 characterised by the separated product stream
    • F25J3/0252—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 characterised by the separated product stream separation of hydrogen
    • 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
    • F25J3/0228—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 characterised by the separated product stream
    • F25J3/0261—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 characterised by the separated product stream separation of carbon monoxide
    • 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
    • F25J3/04254—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using the cold stored in external cryogenic fluids
    • 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
    • F25J3/0489—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
    • F25J3/04763—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
    • F25J3/04945—Details of internal structure; insulation and housing of the cold box
    • 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
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/42—Nitrogen
    • 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
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/40—Processes or apparatus involving steps for increasing the pressure of gaseous process streams the fluid being 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
    • F25J2280/00—Control of the process or apparatus
    • F25J2280/02—Control in general, load changes, different modes ("runs"), measurements
    • 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
    • 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

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

The box (1) has a distillation column (5) inside an insulated enclosure (9), and transmission units (19) transmitting fluid to be separated to the distillation column. A discharge unit (21) discharges the separated fluid from the distillation column. An air cleaning unit (11), a separated fluid processing element (13) e.g. valve, or an air compression unit (15) is separated in the distillation column, where the elements are mounted on an external wall of the enclosure.

Description

La présente invention est relative à une boîte froide d'un appareil deThe present invention relates to a cold box of an apparatus for

séparation cryogénique par distillation. En général quand un appareil de séparation cryogénique est construit sur site, il faut installer un compresseur, un appareil d'épuration, une boîte froide, un stockage de liquide et un système de vaporisation. Chaque élément est généralement installé séparément et donc doit être connecté à au moins un autre élément sur site, ce qui peut être coûteux en temps et en main d'oeuvre. Selon la présente invention, il est prévu une boîte froide d'un appareil de séparation cryogénique par distillation comprenant i) une enceinte isolée ii) une colonne de distillation contenue à l'intérieur de l'enceinte iii) des moyens pour envoyer un fluide à séparer à la colonne iv) des moyens pour sortir un fluide séparé de la colonne caractérisée en ce qu'au moins un élément de traitement d'un fluide, soit séparé dans la colonne soit à séparer dans la colonne, est monté sur une paroi extérieure de l'enceinte. Selon d'autres aspects facultatifs : - au moins un stockage de liquide cryogénique est à l'intérieur de l'enceinte. - au moins un élément de traitement d'un fluide monté sur une paroi extérieure de l'enceinte est un élément de traitement de fluide séparé. - au moins un élément est une vanne, un échangeur, un compresseur, une pompe, un instrument de mesure ou d'analyse. - au moins un élément de traitement d'un fluide monté sur une paroi extérieure de l'enceinte est un élément de traitement de fluide à séparer. - au moins un élément fait partie de ou constitue une unité d'épuration. - au moins un élément fait partie de ou constitue une unité de compression. au moins un élément est, de préférence entièrement, supporté par l'enceinte. - l'au moins un élément est monté sur une paroi latérale de l'enceinte. Selon un autre aspect de l'invention, il est prévu un appareil de séparation cryogénique comprenant une boîte froide telle que décrite ci-dessus.  cryogenic separation by distillation. In general, when a cryogenic separation apparatus is built on site, a compressor, a purifier, a cold box, a liquid storage and a vaporization system must be installed. Each element is usually installed separately and therefore must be connected to at least one other element on site, which can be costly in time and manpower. According to the present invention, there is provided a cold box of a cryogenic separation apparatus by distillation comprising i) an isolated chamber ii) a distillation column contained inside the enclosure iii) means for sending a fluid to separating in column iv) means for removing a fluid separated from the column characterized in that at least one fluid treatment element, is separated in the column or to be separated in the column, is mounted on an outer wall of the enclosure. According to other optional aspects: at least one storage of cryogenic liquid is inside the enclosure. at least one fluid treatment element mounted on an outer wall of the enclosure is a separate fluid treatment element. at least one element is a valve, an exchanger, a compressor, a pump, a measurement or analysis instrument. - At least one fluid treatment element mounted on an outer wall of the enclosure is a fluid treatment element to be separated. - at least one element is part of or constitutes a purification unit. at least one element is part of or constitutes a compression unit. at least one element is preferably entirely supported by the enclosure. - The at least one element is mounted on a side wall of the enclosure. According to another aspect of the invention, there is provided a cryogenic separation apparatus comprising a cold box as described above.

L'appareil peut être un appareil de séparation d'air . L'invention sera décrite en plus de détail en se référant à la figure qui illustre un appareil de séparation d'air pour la production d'azote selon l'invention.  The apparatus may be an air separation apparatus. The invention will be described in more detail with reference to the figure which illustrates an air separation apparatus for the production of nitrogen according to the invention.

L'appareil est dans ce cas précis tenu en froid, non pas par une turbine, mais par injection d'azote liquide en tête de colonne, de manière connue, appelée communément biberonnage . L'appareil comprend une boîte froide 1 constituée par une enceinte allongée 9 d'axe vertical dans laquelle se trouvent une colonne de distillation d'air 5 munie d'un condenseur de tête, une ligne d'échange 6, servant à refroidir de l'air comprimé et épuré par échange de chaleur avec de l'azote et un gaz résiduaire, et un stockage d'azote liquide 7. La boîte froide est isolée en étant perlitée et mise sous vide. Alternativement elle peut contenir de la perlite seule ou un autre isolant. L'enceinte 9 peut être à section circulaire ou rectangulaire.  In this case, the apparatus is in fact kept cold, not by a turbine, but by injecting liquid nitrogen at the top of the column, in a known manner, commonly known as biberonnage. The apparatus comprises a cold box 1 constituted by an elongated enclosure 9 of vertical axis in which there is an air distillation column 5 provided with a head condenser, an exchange line 6, for cooling the compressed and purified air by heat exchange with nitrogen and a waste gas, and storage of liquid nitrogen 7. The cold box is isolated by being pearled and placed under vacuum. Alternatively it may contain perlite alone or another insulator. The enclosure 9 may be circular or rectangular section.

La boîte froide est posée sur le sol 3 et maintenue en place par une jupe 17 (ou par des pieds). Divers éléments 11, 13, 15 de l'appareil de séparation cryogénique sont fixés à la paroi latérale extérieure de la boîte froide. Ces éléments peuvent traiter au moins une partie de l'air à séparer ou au moins une partie de l'azote séparé ou du résiduaire. Par exemple, l'unité d'épuration d'air 11 comprenant les bouteilles d'adsorbant, le réchauffeur électrique et les vannes et tuyaux associés peut être fixée à la paroi extérieure de l'enceinte 9. L'unité d'épuration est connectée lors de la fixation à la colonne pour permettre le passage d'air épuré à la colonne à travers la conduite 19 et de gaz résiduaire de la colonne à l'épuration pour la régénération (non-illustré). Une unité de traitement 13 d'un produit de la distillation dans la colonne de l'appareil est également fixée à la paroi extérieure. Elle peut comprendre une unité d'analyse et/ou une unité de mesure (tel qu'un débitmètre) et/ou une vanne de détente et/ou une pompe et/ou un échangeur et/ou une turbine et/ou un compresseur d'azote et/ou un tuyau, en particulier de mise à l'air. L'unité de traitement est connectée par une conduite d'azote 21 ou de gaz résiduaire (non-illustré) à la colonne, lors de la fixation.  The cold box is placed on the floor 3 and held in place by a skirt 17 (or feet). Various elements 11, 13, 15 of the cryogenic separation apparatus are attached to the outer side wall of the cold box. These elements can treat at least a portion of the air to be separated or at least a portion of the separated nitrogen or waste. For example, the air cleaning unit 11 comprising the adsorbent bottles, the electric heater and the associated valves and pipes can be attached to the outer wall of the enclosure 9. The purification unit is connected when attached to the column to allow the passage of purified air to the column through the pipe 19 and waste gas from the column to the purification for regeneration (not shown). A treatment unit 13 of a distillation product in the column of the apparatus is also attached to the outer wall. It may comprise an analysis unit and / or a measuring unit (such as a flow meter) and / or an expansion valve and / or a pump and / or exchanger and / or a turbine and / or a compressor. nitrogen and / or a pipe, in particular venting. The processing unit is connected by a nitrogen pipe 21 or waste gas (not shown) to the column, during attachment.

L'unité de compression d'air 15 peut être fixée à la paroi extérieure de l'enceinte ou être posée sur le sol sans être attaché à l'enceinte. Au moment où l'unité de compression d'air 15 est fixée à l'enceinte, elle est également rattachée à l'unité d'épuration 11 pour permettre le passage d'air comprimé de l'unité 15 à l'unité 11. On comprendra que comme la ou les connexion(s) entre la colonne et au moins une unité fixée à l'enceinte est (sont) effectuée(s) au moment où l'unité est fixée à l'enceinte, ces connexions n'ont plus besoin d'être effectuées sur site, ainsi simplifiant l'installation.  The air compression unit 15 may be attached to the outer wall of the enclosure or placed on the floor without being attached to the enclosure. At the moment when the air compression unit 15 is attached to the enclosure, it is also attached to the purification unit 11 to allow the passage of compressed air from the unit 15 to the unit 11. It will be understood that since the connection (s) between the column and at least one unit attached to the enclosure is (are) performed at the moment the unit is attached to the enclosure, these connections have not been made. no need to be done on site, thus simplifying the installation.

Cette méthode de fixation des éléments peut également simplifier la mise en conteneur de l'appareil pour le transport de celui-ci. Par contre, un ou plusieurs éléments, destiné à être attaché à l'enceinte 9 quand la boîte froide fonctionne, peut être transporté sans être attaché à l'enceinte, la fixation à l'enceinte étant effectuée une fois arrivé sur site.  This method of fixing the elements can also simplify the containerization of the apparatus for the transport thereof. On the other hand, one or more elements, intended to be attached to the enclosure 9 when the cold box is operating, can be transported without being attached to the enclosure, the fixing to the enclosure being carried out once on site.

L'invention s'applique à d'autres types de distillation que la séparation d'air, par exemple, les séparations de mélanges riches en hydrogène ou monoxyde de carbone et les mélanges riches en dioxyde de carbone. Il sera compris que l'invention peut s'appliquer à des appareils tenus en froid autrement que par biberonnage et que, même pour un appareil biberonné, le stockage de liquide n'est pas nécessairement à l'intérieur de l'enceinte. Le positionnement des unités montré sur la figure n'est qu'un exemple et les unités peuvent être disposées autrement. De même, la disposition spatiale des éléments à l'intérieur de l'enceinte ne représente pas forcément la réalité physique. Par exemple, la ligne d'échange peut être à côté de la colonne ou au-dessus de la colonne. En particulier, au moins un élément de traitement d'un fluide monté sur une paroi extérieure de l'enceinte est un élément de traitement de fluide séparé autre qu'un échangeur.  The invention is applicable to other types of distillation than air separation, for example separations of mixtures rich in hydrogen or carbon monoxide and mixtures rich in carbon dioxide. It will be understood that the invention can be applied to cold-held devices other than by biberonnage and that even for a bottle-fed device, the storage of liquid is not necessarily inside the chamber. The positioning of the units shown in the figure is only an example and the units can be arranged differently. Similarly, the spatial arrangement of the elements inside the enclosure does not necessarily represent the physical reality. For example, the trading line may be next to the column or above the column. In particular, at least one fluid treatment element mounted on an outer wall of the enclosure is a separate fluid treatment element other than an exchanger.

Claims (11)

REVENDICATIONS 1. Boîte froide d'un appareil de séparation cryogénique par distillation comprenant i) une enceinte isolée (9) ii) une colonne de distillation (5) contenue à l'intérieur de l'enceinte iii) des moyens (19) pour envoyer un fluide à séparer à la colonne iv) des moyens (21) pour sortir un fluide séparé de la colonne caractérisée en ce qu'au moins un élément de traitement d'un fluide (11, 13, 15), soit séparé dans la colonne soit à séparer dans la colonne, est monté sur une paroi extérieure de l'enceinte.  1. Cold box of a cryogenic separation apparatus comprising: i) an isolated chamber (9) ii) a distillation column (5) contained inside the enclosure iii) means (19) for sending a fluid to be separated in column iv) means (21) for discharging a fluid separated from the column characterized in that at least one fluid treatment element (11, 13, 15) is separated in the column is to separate in the column, is mounted on an outer wall of the enclosure. 2. Boîte froide selon la revendication 1 comprenant au moins un stockage de liquide cryogénique (7) à l'intérieur de l'enceinte.  2. Cold box according to claim 1 comprising at least one storage of cryogenic liquid (7) inside the enclosure. 3. Boîte froide selon la revendication 1 ou 2 dans laquelle au moins un élément de traitement d'un fluide monté sur une paroi extérieure de l'enceinte est un élément de traitement de fluide séparé (13). 20  3. Cold box according to claim 1 or 2 wherein at least one fluid treatment element mounted on an outer wall of the enclosure is a separate fluid treatment element (13). 20 4. Boîte froide selon la revendication 3 dans laquelle au moins un élément est une vanne, un échangeur, un compresseur, une pompe, un instrument de mesure ou d'analyse.  4. cold box according to claim 3 wherein at least one element is a valve, an exchanger, a compressor, a pump, a measuring instrument or analysis. 5. Boîte froide selon l'une des revendications précédentes dans laquelle au 25 moins un élément de traitement d'un fluide monté sur une paroi extérieure de l'enceinte est un élément de traitement de fluide à séparer (11, 15).  5. Cold box according to one of the preceding claims wherein at least one fluid treatment element mounted on an outer wall of the enclosure is a fluid treatment element to be separated (11, 15). 6. Boîte froide selon la revendication 5 dans laquelle au moins un élément (11) fait partie de ou constitue une unité d'épuration.  6. Cold box according to claim 5 wherein at least one element (11) is part of or constitutes a purification unit. 7. Boîte froide selon la revendication 5 ou 6 dans laquelle au moins un élément (15) fait partie de ou constitue une unité de compression. 30 10  7. Cold box according to claim 5 or 6 wherein at least one element (15) is part of or constitutes a compression unit. 30 10 8. Boîte froide selon l'une des revendications précédentes dans laquelle l'au moins un élément (11, 13, 15) est, de préférence entièrement, supporté par l'enceinte.  8. Cold box according to one of the preceding claims wherein the at least one element (11, 13, 15) is preferably entirely supported by the enclosure. 9. Boîte selon l'une des revendications précédentes dans laquelle l'au moins un élément (11,13,15) est monté sur une paroi latérale de l'enceinte.  9. Box according to one of the preceding claims wherein the at least one element (11,13,15) is mounted on a side wall of the enclosure. 10. Appareil de séparation cryogénique comprenant une boîte froide selon l'une des revendications précédentes.  10. Cryogenic separation apparatus comprising a cold box according to one of the preceding claims. 11. Appareil selon la revendication 10, l'appareil étant un appareil de séparation d'air cryogénique.  11. Apparatus according to claim 10, the apparatus being a cryogenic air separation apparatus.
FR0755699A 2007-06-12 2007-06-12 Cold box for air separation apparatus, has air cleaning unit, separated fluid processing element or air compression unit separated in distillation column, where elements are mounted on external wall of enclosure Withdrawn FR2917490A1 (en)

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CN110360811A (en) * 2019-06-28 2019-10-22 上海二十冶建设有限公司 The integrated installation method of overall skid-mounted formula ice chest

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