EP2541119A1 - Method for storing NO/N2 gaseous mixtures in aluminium vessels - Google Patents

Method for storing NO/N2 gaseous mixtures in aluminium vessels Download PDF

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Publication number
EP2541119A1
EP2541119A1 EP12170945A EP12170945A EP2541119A1 EP 2541119 A1 EP2541119 A1 EP 2541119A1 EP 12170945 A EP12170945 A EP 12170945A EP 12170945 A EP12170945 A EP 12170945A EP 2541119 A1 EP2541119 A1 EP 2541119A1
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EP
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Prior art keywords
container
less
ppm
aluminum alloy
main body
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Granted
Application number
EP12170945A
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German (de)
French (fr)
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EP2541119B1 (en
Inventor
Pierre de Villemeur
Bénédicte Levinson
Laurent Lecourt
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Air Liquide SA
Air Liquide Sante International SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Air Liquide Sante France SA
Original Assignee
Air Liquide SA
Air Liquide Sante International SA
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Air Liquide Sante France SA
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Application filed by Air Liquide SA, Air Liquide Sante International SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude, Air Liquide Sante France SA filed Critical Air Liquide SA
Priority to PL12170945T priority Critical patent/PL2541119T3/en
Publication of EP2541119A1 publication Critical patent/EP2541119A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
    • F17C1/14—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge constructed of aluminium; constructed of non-magnetic steel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0119—Shape cylindrical with flat end-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/032—Orientation with substantially vertical main axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/058—Size portable (<30 l)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0614—Single wall
    • F17C2203/0617—Single wall with one layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0646—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0634—Materials for walls or layers thereof
    • F17C2203/0636—Metals
    • F17C2203/0648—Alloys or compositions of metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0338—Pressure regulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/014—Nitrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/036—Very high pressure (>80 bar)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/011—Improving strength
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/01—Improving mechanical properties or manufacturing
    • F17C2260/012—Reducing weight
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/02—Applications for medical applications
    • F17C2270/025—Breathing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C3/00—Vessels not under pressure
    • F17C3/02—Vessels not under pressure with provision for thermal insulation
    • F17C3/025—Bulk storage in barges or on ships
    • F17C3/027—Wallpanels for so-called membrane tanks

Definitions

  • the invention relates to a method for conditioning NO / N 2 mixtures in a container comprising a main body made of aluminum or an aluminum alloy, in particular a cylinder of cylindrical gas.
  • Gaseous NO / N 2 mixtures are commonly used to treat pulmonary vasoconstriction in adults or children, particularly in neonates with primary pulmonary hypertension or in patients undergoing cardiac surgery.
  • these bottles typically contain 100 to 1000 ppm by volume of NO and nitrogen (N 2 ) for the rest. These bottles usually have a water capacity of 2 to 50 liters, which allows to introduce a total load of up to 15 m 3 of NO / N 2 mixture.
  • the packaging that is to say the bottling of these mixtures, is done in gas conditioning centers.
  • packaging containers must also not be overweight and especially withstand shocks and gas pressure of up to several hundred bar, typically 200 to 300 bar, and corrosion.
  • the object of the present invention is to solve these problems, that is to say to minimize said difference in capacity by obtaining a final load as close as possible to the load reference, that is to say a difference of the order of +/- 1.5% or lower, while using a packaging container resistant to shocks and high pressures, as well as corrosion, but without presenting too much weight.
  • the aluminum alloy must be chosen carefully so as not to cause excessive fragility of the bottles. This fragility can be avoided or minimized by controlling in particular the lead content of the alloy and incidentally the grain size of the alloy.
  • the invention also relates to the use of a container comprising an internal volume of between 2 and 30 liters, and whose main body is formed of an aluminum alloy comprising aluminum and a mass proportion of Pb less than or equal to 50 ppm, Si between 0.1 and 1.5%, Mn less than 0.5% and Mg between 0.1 and 2%, to form a gaseous mixture NO / N 2 containing 1 to 1000 ppm by volume of NO and nitrogen for the rest.
  • the NO / N2 mixture can be used to supply gas, a NO / N 2 mixture distribution facility that can be used in the context of a treatment of pulmonary hypertension in adults. child or newborn, comprising a ventilator delivering an oxygen-containing gas, such as air, oxygen enriched air or an oxygen / nitrogen mixture, comprising a patient circuit connecting said ventilator to a patient interface , for example a breathing mask or a cannula, characterized in that the patient circuit is supplied with gas by a container according to the invention, in particular a gas bottle.
  • the gas passes through a control device, such as the device Opti Kinox Air Liquide Health, arranged between the (or) container and the patient circuit.
  • the attached figure mounts a container according to the invention (sectional view), namely a conditioning bottle of gas mixtures NO / nitrogen. It consists of a main body 1 of generally cylindrical shape including a throat or collar 2 at the level which is the gas passage opening 5 and, at its other end, a flat bottom 3 on which the bottle rests when it is placed on a support, such as the ground 6.
  • This bottle comprises an internal volume 7 having a typical capacity of 5 liters (in water), for a diameter of about 14 cm and a height of about 63 cm, or 20 liters (in water), for a diameter of 21 cm. approximately, and a height of about 108 cm.
  • a lower capacity bottle for example of only 2 liters, or of different sizes.
  • a NO / nitrogen mixture containing up to 1000 ppm by volume of NO and nitrogen for the remainder, for example 225, 450 or 800 ppm vol., Is packaged in the bottle at a pressure of more than 150 bar, by example of 180 bar.
  • a valve 4 or an integrated pressure reducer valve is mounted, for example screwed, at the neck 2 of the bottle so as to control the flow rate and / or the pressure of the gas leaving the container.
  • the body 1 of the bottle is formed of an aluminum alloy, examples of which are given in the following Table.
  • Table ⁇ / u> elements Mass ratio of the alloy Pb ⁇ 30 ppm Fe ⁇ 0.7% Yes 0.4 to 0.8% Cu 0.15 to 0.40% mn ⁇ 0.15% mg 0.8 to 1.2% Cr 0.04 to 0.35% Zn ⁇ 0.25% Ti ⁇ 0.15% impurities 0,15% maximum al rest

Abstract

The method involves providing a main body (1) that comprises an internal volume (7) with capacity ranging between 2 and 30 l. The main body is made of aluminum alloy including a mass proportion of lead lower or equal to 50 ppm, silicon between 0.1 and 1.5 percent, manganese lower than 0.5 percent, and magnesium between 0.1 and 2 percent. Mixture of nitric oxide/nitrogen with pressure greater than atmospheric pressure is introduced into the internal volume of a container i.e. steel bottle.

Description

L'invention concerne un procédé de conditionnement de mélanges NO/N2 dans un récipient comprenant un corps principal formé d'aluminium ou d'un alliage d'aluminium, en particulier une bouteille de gaz de forme cylindrique.The invention relates to a method for conditioning NO / N 2 mixtures in a container comprising a main body made of aluminum or an aluminum alloy, in particular a cylinder of cylindrical gas.

Les mélanges gazeux NO/N2 sont couramment utilisés pour traiter les vasoconstrictions pulmonaires chez l'adulte ou l'enfant, en particulier chez les nouveaux nés souffrant d'hypertension pulmonaire primitive ou chez les patients subissant une opération de chirurgie cardiaque.Gaseous NO / N 2 mixtures are commonly used to treat pulmonary vasoconstriction in adults or children, particularly in neonates with primary pulmonary hypertension or in patients undergoing cardiac surgery.

Ces mélanges NO/N2 sont classiquement conditionnés dans des bouteilles de gaz en acier.These NO / N 2 mixtures are conventionally packaged in steel gas cylinders.

Typiquement, ces bouteilles contiennent de 100 à 1000 ppm en volume de NO et de l'azote (N2) pour le reste. Ces bouteilles ont habituellement une contenance en eau de 2 à 50 litres, ce qui permet d'y introduire une charge totale pouvant aller jusqu'à 15 m3 de mélange NO/N2.Typically, these bottles contain 100 to 1000 ppm by volume of NO and nitrogen (N 2 ) for the rest. These bottles usually have a water capacity of 2 to 50 liters, which allows to introduce a total load of up to 15 m 3 of NO / N 2 mixture.

Le conditionnement, c'est-à-dire la mise en bouteille de ces mélanges, se fait dans des centres de conditionnement de gaz.The packaging, that is to say the bottling of these mixtures, is done in gas conditioning centers.

Or, on a constaté en pratique une imprécision lors du conditionnement des mélanges gazeux NO/N2 dans ces bouteilles en acier.However, it has been found in practice imprecision during the conditioning of gas mixtures NO / N 2 in these steel bottles.

En effet, on a noté un écart entre le volume interne de chaque bouteille disponible pour le conditionnement du NO par rapport au volume théorique en eau de ces bouteilles ; cet écart est appelé ci-après « écart de contenance ».Indeed, there was a difference between the internal volume of each bottle available for the conditioning of the NO with respect to the theoretical volume of water of these bottles; this difference is hereinafter referred to as the "capacity gap".

Cet écart de contenance n'a pas d'influence sur la teneur en NO finale mais se répercute sur la charge finale de la bouteille qui est alors soit supérieure, soit inférieure à la charge désirée, c'est-à-dire par rapport à la charge de consigne.This difference in capacity has no influence on the final NO content but has repercussions on the final charge of the bottle, which is then either greater or less than the desired load, that is to say with respect to the setpoint charge.

Toutefois, cet écart de contenance n'est pas négligeable puisque qu'il peut atteindre environ 5% de la charge totale en gaz de chaque bouteille.However, this difference in capacity is not negligible since it can reach about 5% of the total gas load of each bottle.

Par ailleurs, les récipients de conditionnement doivent en outre ne pas être de poids excessif et surtout résister à des chocs et à une pression gazeuse pouvant atteindre plusieurs centaines de bar, typiquement de 200 à 300 bar, ainsi qu'à la corrosion.In addition, the packaging containers must also not be overweight and especially withstand shocks and gas pressure of up to several hundred bar, typically 200 to 300 bar, and corrosion.

Le but de la présente invention est de résoudre ces problèmes, c'est-à-dire de minimiser ledit écart de contenance en obtenant une charge finale aussi proche que possible de la consigne de charge, c'est-à-dire un écart de l'ordre de +/-1,5% ou inférieur, tout en utilisant un récipient de conditionnement résistant aux chocs et aux hautes pressions, ainsi qu'à la corrosion, mais sans présenter un poids trop élevé.The object of the present invention is to solve these problems, that is to say to minimize said difference in capacity by obtaining a final load as close as possible to the load reference, that is to say a difference of the order of +/- 1.5% or lower, while using a packaging container resistant to shocks and high pressures, as well as corrosion, but without presenting too much weight.

La solution de l'invention est un procédé de conditionnement d'un mélange NO/N2 dans un récipient de conditionnement, comprenant un corps principal comprenant un volume interne de contenance comprise entre 2 et 30 litres, dans lequel :

  1. a) on utilise un récipient dont le corps principal est formé d'un alliage d'aluminium comprenant de l'aluminium et une proportion massique de Pb inférieure ou égale à 50 ppm, Si entre 0,1 et 1,5%, Mn inférieure à 0,5% et Mg entre 0,1 et 2%, et
  2. b) on introduit dans le volume interne dudit récipient, un mélange NO/N2 à une pression supérieure à la pression atmosphérique.
The solution of the invention is a method of conditioning a NO / N 2 mixture in a conditioning container, comprising a main body comprising an internal volume of between 2 and 30 liters, in which:
  1. a) using a container whose main body is formed of an aluminum alloy comprising aluminum and a mass proportion of Pb less than or equal to 50 ppm, Si between 0.1 and 1.5%, lower Mn at 0.5% and Mg between 0.1 and 2%, and
  2. b) is introduced into the internal volume of said container, a NO / N 2 mixture at a pressure above atmospheric pressure.

Dans le cadre de la présente invention, il a été mis en évidence que l'écart de charge, c'est-à-dire l'imprécision de volume de charge, était en fait liée aux bouteilles utilisées pour conditionner les mélanges NO/N2.In the context of the present invention, it has been demonstrated that the load difference, that is to say the imprecision of the volume of charge, was in fact related to the bottles used to condition the NO / N mixtures. 2 .

En effet, il a été remarqué que l'utilisation de bouteilles en acier ne permettait pas d'obtenir une précision de charge désirée mais qu'à l'inverse, de manière surprenante, l'utilisation de bouteilles en aluminium permettait d'obtenir la précision désirée.Indeed, it was noticed that the use of steel bottles did not make it possible to obtain a desired load accuracy, but that, conversely, surprisingly, the use of aluminum bottles made it possible to obtain the desired desired accuracy.

Or, si le fait de réaliser les bouteilles en aluminium permet également d'apporter une relative légèreté, il a été constaté que l'alliage d'aluminium doit être choisi avec soin pour ne pas engendrer une fragilité trop importante des bouteilles. Cette fragilité peut être évitée ou minimisée en contrôlant notamment la teneur en plomb de l'alliage et accessoirement la taille des grains de l'alliage.However, if the fact of making the aluminum bottles also makes it possible to bring about a relative lightness, it has been found that the aluminum alloy must be chosen carefully so as not to cause excessive fragility of the bottles. This fragility can be avoided or minimized by controlling in particular the lead content of the alloy and incidentally the grain size of the alloy.

Par ailleurs, l'invention porte également sur l'utilisation d'un récipient comprenant un volume interne de contenance comprise entre 2 et 30 litres, et dont le corps principal est formé d'un alliage d'aluminium comprenant de l'aluminium et une proportion massique de Pb inférieure ou égale à 50 ppm, Si entre 0,1 et 1,5%, Mn inférieure à 0,5% et Mg entre 0,1 et 2%, pour conditionner un mélange gazeux NO/N2 contenant de 1 à 1000 ppm en volume de NO et d'azote pour le reste.Furthermore, the invention also relates to the use of a container comprising an internal volume of between 2 and 30 liters, and whose main body is formed of an aluminum alloy comprising aluminum and a mass proportion of Pb less than or equal to 50 ppm, Si between 0.1 and 1.5%, Mn less than 0.5% and Mg between 0.1 and 2%, to form a gaseous mixture NO / N 2 containing 1 to 1000 ppm by volume of NO and nitrogen for the rest.

Selon le cas, le procédé de conditionnement de l'invention ou l'utilisation selon l'invention peut comprendre l'une ou plusieurs des caractéristiques techniques suivantes :

  • l'alliage d'aluminium du récipient comprend (% en masse) : Cr entre 0,01 et 0,8%, Fe entre 0,001 et 1 %, Cu entre 0,01 et 1%, Zn entre 0,001 et 0,5% et/ou Ti entre 0,001 et 0,5%.
  • l'alliage d'aluminium du récipient comprend (% en masse) au plus 30 ppm de Pb, entre 0,2 et 1 % de Si, moins de 0,4 % de Mn, entre 0,5 et 1,5% de Mg, entre 0,02 et 0,6% de Cr, moins de 0,8 % de Fe, entre 0,05 et 0,5% de Cu, moins de 0,4% de Zn et/ou moins de 0,3% de Ti.
  • la teneur en plomb de l'alliage d'aluminium du récipient est inférieure ou égale à 30 ppm en masse.
  • la teneur en aluminium de l'alliage d'aluminium du récipient est comprise entre 92 et 98% en masse, de préférence d'au moins 94% en masse.
  • l'alliage d'aluminium du récipient comprend (% en masse) une proportion de Mn inférieure à 0,3%, de préférence inférieure à 0,2%, de préférence encore inférieure ou égale à 0,15%.
  • l'alliage d'aluminium du récipient comprend (% en masse) une proportion de Fe inférieure à 0,7%.
  • l'alliage d'aluminium du récipient comprend (% en masse) une proportion de Zn inférieure à 0,3%, de préférence inférieure ou égale à 0,25%.
  • l'alliage d'aluminium du récipient comprend (% en masse) une proportion de Ti inférieure à 0,2%, de préférence inférieure ou égale à 0,15%.
  • la taille maximale du grain de l'alliage du récipient ne doit normalement pas dépasser 1 mm, voire 0,56 mm dans certains cas (bouteilles de 2 litres par exemple). L'exigence de taille du grain s'applique à tous les grains et non pas à la taille moyenne du grain.
  • le récipient est une bouteille de gaz comprenant un corps principal de forme cylindrique.
  • le récipient a une contenance (volume en eau) comprise entre 2 et 25 litres.
  • le récipient a un diamètre compris entre 10 et 30 cm, et une hauteur comprise entre 50 et 120 cm.
  • le corps principal du récipient comprend un col avec un orifice de sortie au niveau duquel est fixé un dispositif de contrôle du passage de gaz et/ou de réduction de pression.
  • le corps du récipient comprend une paroi périphérique ayant une épaisseur entre 2 et 20 mm.
  • le mélange NO/N2 contient de 1 à 1000 ppm en volume de NO et de l'azote (N2) pour le reste.
  • la pression dans le récipient est comprise entre 2 et 350 bar.
Depending on the case, the packaging method of the invention or the use according to the invention may comprise one or more of the following technical characteristics:
  • the aluminum alloy of the container comprises (% by mass): Cr between 0.01 and 0.8%, Fe between 0.001 and 1%, Cu between 0.01 and 1%, Zn between 0.001 and 0.5% and / or Ti between 0.001 and 0.5%.
  • the aluminum alloy of the container comprises (% by mass) at most 30 ppm of Pb, between 0.2 and 1% of Si, less than 0.4% of Mn, between 0.5 and 1.5% of Mg, between 0.02 and 0.6% Cr, less than 0.8% Fe, between 0.05 and 0.5% Cu, less than 0.4% Zn and / or less than 0, 3% Ti.
  • the lead content of the aluminum alloy of the container is less than or equal to 30 ppm by weight.
  • the aluminum content of the aluminum alloy of the container is between 92 and 98% by weight, preferably at least 94% by weight.
  • the aluminum alloy of the container comprises (% by mass) a proportion of Mn of less than 0.3%, preferably less than 0.2%, more preferably less than or equal to 0.15%.
  • the aluminum alloy of the container comprises (% by weight) a proportion of Fe less than 0.7%.
  • the aluminum alloy of the container comprises (% by mass) a proportion of Zn of less than 0.3%, preferably less than or equal to 0.25%.
  • the aluminum alloy of the container comprises (% by mass) a proportion of Ti less than 0.2%, preferably less than or equal to 0.15%.
  • the maximum grain size of the alloy of the container should not normally exceed 1 mm, or even 0.56 mm in some cases (2 liter bottles for example). The grain size requirement applies to all grains and not to the average grain size.
  • the container is a gas cylinder comprising a cylindrical main body.
  • the container has a capacity (volume in water) of between 2 and 25 liters.
  • the container has a diameter of between 10 and 30 cm, and a height of between 50 and 120 cm.
  • the main body of the container comprises a neck with an outlet orifice at which is fixed a device for controlling the passage of gas and / or pressure reduction.
  • the body of the container comprises a peripheral wall having a thickness between 2 and 20 mm.
  • the NO / N 2 mixture contains 1 to 1000 ppm by volume of NO and nitrogen (N 2 ) for the remainder.
  • the pressure in the container is between 2 and 350 bar.

Dans le cadre de l'invention, le mélange NO/N2 peut être utilisé pour alimenter en gaz, une installation de distribution de mélanges NO/N2 utilisable dans le cadre d'un traitement de l'hypertension pulmonaire chez l'adulte, l'enfant ou le nouveau né, comprenant un ventilateur délivrant un gaz contenant de l'oxygène, tel de l'air, de l'air enrichi en oxygène ou un mélange oxygène/azote, comportant un circuit patient reliant ledit ventilateur à une interface patient, par exemple un masque respiratoire ou une canule, caractérisée en ce que le circuit patient est alimenté en gaz par un récipient selon l'invention, en particulier une bouteille de gaz. De préférence, le gaz transite par un dispositif de régulation, tel le dispositif Opti Kinox de Air Liquide Santé, agencé entre le (ou les) récipient et le circuit patient.In the context of the invention, the NO / N2 mixture can be used to supply gas, a NO / N 2 mixture distribution facility that can be used in the context of a treatment of pulmonary hypertension in adults. child or newborn, comprising a ventilator delivering an oxygen-containing gas, such as air, oxygen enriched air or an oxygen / nitrogen mixture, comprising a patient circuit connecting said ventilator to a patient interface , for example a breathing mask or a cannula, characterized in that the patient circuit is supplied with gas by a container according to the invention, in particular a gas bottle. Preferably, the gas passes through a control device, such as the device Opti Kinox Air Liquide Health, arranged between the (or) container and the patient circuit.

La Figure ci-jointe monte un récipient selon l'invention (vue en coupe), à savoir une bouteille de conditionnement de mélanges gazeux NO/azote. Elle se compose d'un corps principal 1 de forme générale cylindrique comprenant un étranglement ou col 2 au niveau duquel se trouve l'ouverture 5 de passage du gaz et, à son autre extrémité, d'un fond 3 plat sur lequel repose la bouteille lorsqu'elle est posée sur un support, tel le sol 6.The attached figure mounts a container according to the invention (sectional view), namely a conditioning bottle of gas mixtures NO / nitrogen. It consists of a main body 1 of generally cylindrical shape including a throat or collar 2 at the level which is the gas passage opening 5 and, at its other end, a flat bottom 3 on which the bottle rests when it is placed on a support, such as the ground 6.

Cette bouteille comprend un volume interne 7 ayant une contenance typique soit de 5 litres (en eau), pour un diamètre de 14 cm environ et une hauteur de 63 cm environ, soit de 20 litres (en eau), pour un diamètre de 21 cm environ, et une hauteur de 108 cm environ. Il est toutefois également possible d'avoir une bouteille de contenance inférieure, par exemple de 2 litres seulement, ou de dimensions différentes.This bottle comprises an internal volume 7 having a typical capacity of 5 liters (in water), for a diameter of about 14 cm and a height of about 63 cm, or 20 liters (in water), for a diameter of 21 cm. approximately, and a height of about 108 cm. However, it is also possible to have a lower capacity bottle, for example of only 2 liters, or of different sizes.

Un mélange NO/azote contenant jusqu'à 1000 ppm en volume de NO et d'azote pour le reste, par exemple de 225, 450 ou 800 ppm vol., est conditionné dans la bouteille à une pression de plus de 150 bar, par exemple de 180 bar.A NO / nitrogen mixture containing up to 1000 ppm by volume of NO and nitrogen for the remainder, for example 225, 450 or 800 ppm vol., Is packaged in the bottle at a pressure of more than 150 bar, by example of 180 bar.

Un robinet 4 ou un robinet à détendeur intégré est monté, par exemple vissé, au niveau du col 2 de la bouteille de manière à contrôler le débit et/ou la pression du gaz sortant du récipient.A valve 4 or an integrated pressure reducer valve is mounted, for example screwed, at the neck 2 of the bottle so as to control the flow rate and / or the pressure of the gas leaving the container.

Conformément à l'invention, le corps 1 de la bouteille est formé d'un alliage d'aluminium dont des exemples de compositions sont donnés dans le Tableau suivant. Tableau Eléments Proportion en masse de l'alliage Pb < 30 ppm Fe <0,7 % Si 0,4 à 0,8 % Cu 0,15 à 0,40 % Mn <0,15 % Mg 0,8 à 1,2 % Cr 0,04 à 0,35 % Zn <0,25 % Ti <0,15 % Impuretés 0,15 % maxi Al reste According to the invention, the body 1 of the bottle is formed of an aluminum alloy, examples of which are given in the following Table. <U> Table </ u> elements Mass ratio of the alloy Pb <30 ppm Fe <0.7% Yes 0.4 to 0.8% Cu 0.15 to 0.40% mn <0.15% mg 0.8 to 1.2% Cr 0.04 to 0.35% Zn <0.25% Ti <0.15% impurities 0,15% maximum al rest

En utilisant une bouteille avec corps 1 en un alliage d'aluminium, tel que donné notamment le Tableau précédent, il est possible de minimiser l'écart de contenance susmentionné en obtenant une charge finale aussi proche que possible de la consigne de charge, c'est-à-dire un écart de l'ordre de +/- 1,5% ou inférieur, tout en ayant un récipient résistant aux chocs, aux hautes pressions et à la corrosion.By using a bottle with a body 1 made of an aluminum alloy, such as given in particular in the preceding table, it is possible to minimize the difference in the aforementioned capacity by obtaining a final charge as close as possible to the charging setpoint. that is to say a deviation of the order of +/- 1.5% or less, while having a container resistant to shocks, high pressures and corrosion.

Claims (10)

Procédé de conditionnement d'un mélange NO/N2 dans un récipient de conditionnement, comprenant un corps principal (1) comprenant un volume interne (7) de contenance comprise entre 2 et 30 litres, dans lequel : a) on utilise un récipient dont le corps principal (1) est formé d'un alliage d'aluminium comprenant de l'aluminium et une proportion massique de Pb inférieure ou égale à 50 ppm, Si entre 0,1 et 1,5%, Mn inférieure à 0,5% et Mg entre 0,1 et 2%, et b) on introduit dans le volume interne (7) dudit récipient, un mélange NO/N2 à une pression supérieure à la pression atmosphérique. A method for conditioning a NO / N 2 mixture in a conditioning container, comprising a main body (1) comprising an internal volume (7) of between 2 and 30 liters, in which: a) using a container whose main body (1) is formed of an aluminum alloy comprising aluminum and a mass proportion of Pb less than or equal to 50 ppm, Si between 0.1 and 1.5% , Mn less than 0.5% and Mg between 0.1 and 2%, and b) is introduced into the internal volume (7) of said container, a NO / N 2 mixture at a pressure above atmospheric pressure. Procédé selon la revendication précédente, caractérisé en ce que l'alliage d'aluminium du récipient comprend (% en masse) entre 0,01 et 0,8% de Cr, entre 0,001 et 1 % de Fe, entre 0,01 et 1% de Cu, entre 0,001 et 0,5% de Zn et/ou entre 0,001 et 0,5% de Ti.Process according to the preceding claim, characterized in that the aluminum alloy of the container comprises (% by mass) between 0.01 and 0.8% of Cr, between 0.001 and 1% of Fe, between 0.01 and 1 % Cu, between 0.001 and 0.5% Zn and / or between 0.001 and 0.5% Ti. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'alliage d'aluminium du récipient comprend (% en masse) au plus 30 ppm de Pb, entre 0,2 et 1 % de Si, moins de 0,4 % de Mn, entre 0,5 et 1,5% de Mg, entre 0,02 et 0,6% de Cr, moins de 0,8 % de Fe, entre 0,05 et 0,5% de Cu, moins de 0,4% de Zn et/ou moins de 0,3% de Ti.Process according to one of the preceding claims, characterized in that the aluminum alloy of the container comprises (% by mass) at most 30 ppm of Pb, between 0.2 and 1% of Si, less than 0.4% of Mn, between 0.5 and 1.5% Mg, between 0.02 and 0.6% Cr, less than 0.8% Fe, between 0.05 and 0.5% Cu, less than 0.4% Zn and / or less than 0.3% Ti. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'alliage d'aluminium du récipient présente un grain dont la taille de grain est inférieure à 1 mm.Method according to one of the preceding claims, characterized in that the aluminum alloy of the container has a grain whose grain size is less than 1 mm. Procédé selon l'une des revendications précédentes, caractérisé en ce que récipient est une bouteille de gaz comprenant un corps principal (1) de forme cylindrique et ayant un fond plat et ayant un diamètre compris entre 10 et 30 cm, et une hauteur comprise entre 50 et 120 cm.Method according to one of the preceding claims, characterized in that the container is a gas cylinder comprising a main body (1) of cylindrical shape and having a flat bottom and having a diameter of between 10 and 30 cm, and a height between 50 and 120 cm. Procédé selon l'une des revendications précédentes, caractérisé en ce que le corps (1) comprend une paroi périphérique ayant une épaisseur (E) entre 2 et 20 mm.Method according to one of the preceding claims, characterized in that the body (1) comprises a peripheral wall having a thickness (E) of between 2 and 20 mm. Procédé selon l'une des revendications précédentes, caractérisé en ce que le corps principal (1) comprend un col (2) avec un orifice (5) de sortie au niveau duquel est fixé un dispositif (4) de contrôle du passage de gaz et/ou de réduction de pression.Method according to one of the preceding claims, characterized in that the main body (1) comprises a neck (2) with an outlet orifice (5) at the level of which is fixed a device (4) for controlling the passage of gas and / or pressure reduction. Procédé selon l'une des revendications précédentes, caractérisé en ce que le mélange gazeux NO/N2 contient de 1 à 1000 ppm en volume de NO et de l'azote (N2) pour le reste.Process according to one of the preceding claims, characterized in that the gaseous mixture NO / N 2 contains from 1 to 1000 ppm by volume of NO and nitrogen (N 2 ) for the remainder. Procédé selon l'une des revendications précédentes, caractérisé en ce que le récipient (1) a un volume interne (7) de contenance (volume en eau) comprise entre 2 et 25 litres.Method according to one of the preceding claims, characterized in that the container (1) has an internal volume (7) of capacity (volume in water) of between 2 and 25 liters. Utilisation d'un récipient comprenant un volume interne (7) de contenance comprise entre 2 et 30 litres, et dont le corps principal (1) est formé d'un alliage d'aluminium comprenant de l'aluminium et une proportion massique de Pb inférieure ou égale à 50 ppm, Si entre 0,1 et 1,5%, Mn inférieure à 0,5% et Mg entre 0,1 et 2%, pour conditionner un mélange gazeux NO/N2 contenant de 1 à 1000 ppm en volume de NO et d'azote pour le reste.Use of a container comprising an internal volume (7) of between 2 and 30 liters, and whose main body (1) is formed of an aluminum alloy comprising aluminum and a mass proportion of lower Pb or equal to 50 ppm, Si between 0.1 and 1.5%, Mn less than 0.5% and Mg between 0.1 and 2%, to condition a gaseous mixture NO / N 2 containing from 1 to 1000 ppm by NO and nitrogen volume for the rest.
EP12170945.5A 2011-06-29 2012-06-06 Method for storing NO/N2 gaseous mixtures in aluminium vessels Active EP2541119B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12170945T PL2541119T3 (en) 2011-06-29 2012-06-06 Method for storing NO/N2 gaseous mixtures in aluminium vessels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1155788A FR2977297B1 (en) 2011-06-29 2011-06-29 ALUMINUM BOTTLE FOR MIXTURE GAS NO / NITROGEN

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EP2541119A1 true EP2541119A1 (en) 2013-01-02
EP2541119B1 EP2541119B1 (en) 2018-11-07

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EP (1) EP2541119B1 (en)
ES (1) ES2703625T3 (en)
FR (1) FR2977297B1 (en)
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1379764A (en) * 1963-10-17 1964-11-27 Pechiney Prod Chimiques Sa New application of a light alloy
US4747890A (en) * 1986-07-24 1988-05-31 Societe Metallurgieque De Gerzat Al-base alloy hollow bodies under pressure
EP0589807A1 (en) * 1992-09-22 1994-03-30 Société Métallurgique de Gerzat Aluminium alloy for pressurised hollow bodies
US5932037A (en) * 1993-04-15 1999-08-03 Luxfer Group Limited Method of making hollow bodies
DE202006019115U1 (en) * 2006-12-19 2008-04-30 Otto Fuchs Kg pressure vessel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1379764A (en) * 1963-10-17 1964-11-27 Pechiney Prod Chimiques Sa New application of a light alloy
US4747890A (en) * 1986-07-24 1988-05-31 Societe Metallurgieque De Gerzat Al-base alloy hollow bodies under pressure
EP0589807A1 (en) * 1992-09-22 1994-03-30 Société Métallurgique de Gerzat Aluminium alloy for pressurised hollow bodies
US5932037A (en) * 1993-04-15 1999-08-03 Luxfer Group Limited Method of making hollow bodies
DE202006019115U1 (en) * 2006-12-19 2008-04-30 Otto Fuchs Kg pressure vessel

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ES2703625T3 (en) 2019-03-11
FR2977297A1 (en) 2013-01-04
EP2541119B1 (en) 2018-11-07
PL2541119T3 (en) 2019-04-30
FR2977297B1 (en) 2015-01-16
PT2541119T (en) 2019-01-11

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