EP2601472A1 - U-tube vaporizer - Google Patents

U-tube vaporizer

Info

Publication number
EP2601472A1
EP2601472A1 EP11736387.9A EP11736387A EP2601472A1 EP 2601472 A1 EP2601472 A1 EP 2601472A1 EP 11736387 A EP11736387 A EP 11736387A EP 2601472 A1 EP2601472 A1 EP 2601472A1
Authority
EP
European Patent Office
Prior art keywords
chamber
partition
liquid
vaporizer
tubes
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.)
Granted
Application number
EP11736387.9A
Other languages
German (de)
French (fr)
Other versions
EP2601472B1 (en
Inventor
Jean-Marc Peyron
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
Publication of EP2601472A1 publication Critical patent/EP2601472A1/en
Application granted granted Critical
Publication of EP2601472B1 publication Critical patent/EP2601472B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B7/00—Steam boilers of furnace-tube type, i.e. the combustion of fuel being performed inside one or more furnace tubes built-in in the boiler body
    • F22B7/16—Component parts thereof; Accessories therefor, e.g. stay-bolt connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0265—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
    • F28D2021/0064—Vaporizers, e.g. evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/0071—Evaporators

Definitions

  • the present invention relates to a vaporizer.
  • a vaporizer constituted by a heat exchanger in which a heat transfer fluid transfers heat to a liquid to be vaporized, the liquid flowing in at least one U-shaped tube connected to a plate.
  • This vaporizer may for example be a backup vaporizer, which vaporizes cryogenic liquid to a network, to compensate the flow from a cryogenic unit.
  • This system is usually powered by a cryogenic pump and the vaporized liquid in the pin is sent to the customer when the air separation unit stops.
  • a vaporizer 4 consisting of a cylindrical chamber 7 and a hemispherical dome, both being separated by a vertical plate 13 pierced with openings. These openings are connected to U-shaped pipes so that one end of the pipe is attached to an opening in the lower part of the vertical plate 13 and the other end is attached to an opening in the upper part of this plate .
  • the dome is divided in a sealed manner into an upper part 5 and a lower part 3 by a horizontal flat plate forming a partition 6.
  • a liquid to be vaporized is introduced into the lower part 3 which forms a feed chamber and circulates in tubes U-shaped 17.
  • the liquid arrives towards the upper part 5 of the dome 2, which constitutes an evacuation chamber. There it is entirely vaporized by the exchange of heat with steam 9 or other heat transfer gas sent into the chamber 7 and which circulates around the tube or tubes 17. The gas formed by vaporizing the liquid is withdrawn from the upper part 5 of the dome 2. The cooled water vapor 1 1 leaves the atmosphere at the top of the chamber 7.
  • This vaporization system has a relatively long start-up time, even when the cryogenic pump sends the full flow to this system emergency, it is necessary to wait between 30 seconds and a minute before observing the full flow of vaporization.
  • An object of the invention is to reduce the commissioning time of a vaporizer and reduce the overall cost of the apparatus incorporating the vaporizer by eliminating or reducing the size of the buffer capacity.
  • a vaporizer comprising a plurality of U-shaped tubes contained in an enclosure, each tube having two ends, the tubes being arranged in at least one plane, the enclosure being closed on one side by a plate having as many apertures as there are tube ends, the apertures comprising apertures and low apertures, each tube being connected at one end to a top aperture of the plate and at a bottom end to a low opening of the plate, a dome covering the plate on the opposite side to that of the tubes, the dome being delimited by a partition orthogonal to the plane of the tubes to form an admission chamber and an evacuation chamber characterized in that the intake chamber is divided into two parts by a partition perpendicular to the plane of the tubes and the partition to form a liquid inlet chamber between the plate and the partition and a chamber on the other side of the partition, the liquid inlet from the outside of the vaporizer opening into the inlet chamber and the auxiliary chamber being arranged to receive only liquid from the inlet chamber so that the liquid coming from the outside arriving
  • the partition includes an opening towards its bottom edge to allow a circulation of liquid between the partition and the dome.
  • the volume of the inlet chamber is smaller than that of the auxiliary chamber.
  • the volume of the inlet chamber is at least two times smaller than that of the auxiliary chamber.
  • the lower openings are arranged at different distances from the partition.
  • the vaporizer comprises an inlet of circulating fluid opening into the chamber.
  • the chamber of ad dition and the evacuation chamber have substantially the same shape and volume
  • the partition is a flat plate.
  • the liquid from the outside can enter the auxiliary chamber only through an opening in the partition or passing over the partition.
  • the liquid inlet is formed in the enclosure.
  • the liquid inlet is arranged so that in use the liquid enters the bottom of the vaporizer.
  • a cryogenic distillation separation apparatus comprising a vaporizer according to one of the preceding claims and means for supplying it with cryogenic liquid.
  • a method of vaporizing a liquid in a vaporizer in which a heat-generating gas is sent to the chamber, a liquid to be vaporized is introduced into the inlet chamber and evacuates the liquid vaporized by the evacuation chamber.
  • the improvement device according to the invention is therefore a weir system which preferentially feeds the tubes of the exchanger to the rise in production of the vaporization system.
  • This spillway consists of a solid plate open at the top and equipped with a deconcentration hole for hydrocarbon safety located at the bottom of the tank.
  • Figure 2 illustrates a vertical section of the vaporizer
  • Figure 3 shows a side view of the interior of the vaporizer of Figure 2.
  • the vaporizer of FIG. 2 differs from that of FIG. 1 in that a solid plate 21 forms a partial partition dividing the lower part 3 of the dome 2 into two unequal parts.
  • the left part of FIG. 1 corresponds to the left part of the vaporizer of FIG. 2.
  • the partition 21 is arranged substantially vertically, so that about one third of the volume of the lower part 3 is located between this partition 21 and the plate 13.
  • the partition 21 does not extend to the horizontal plate of the partition 6 and an opening 23 is formed in the middle of the partition 21 at its bottom edge.
  • the liquid enters from the outside into the space of the lower part 3 only through an inlet disposed between the plate 13 and the partition 21.
  • the opening 23 is small, the liquid accumulates in this space and the liquid level rises so that all the pipes 17 opening into the plate 13 are fed.
  • the liquid flows to the other side of the plate 21.
  • the liquid can also pass into the opening 23.
  • the plate 13 is seen, the openings being not illustrated for the sake of simplification.
  • the plate 21 has a horizontal edge and a curved edge that matches the interior of the lower part 3 of the dome 2.
  • the invention is also applicable to the vaporization of liquids which condense at temperatures above cryogenic temperatures.

Abstract

A vaporizer comprises a number of U-shaped tubes (17) contained in a vessel (7), each tube having two ends, the tubes being arranged in at least one plane, the vessel being closed at one end by a plate (13) having as many openings as there are tube ends, a dome (2) covering the plate on the opposite side to the tubes, the dome being bounded by a wall (6) orthogonal to the plane of the tubes to form an inlet chamber (3) and an outlet chamber (5), the inlet chamber being split into two parts by a partition (21) perpendicular to the plane of the tubes and to the wall to form a chamber for admitting liquid between the plate and the partition and an auxiliary chamber on the other side of the partition, the admission of liquid from outside the vaporizer opening into the admission chamber and the auxiliary chamber being designed to receive only liquid from the admission chamber such that liquid from the outside arriving in the admission chamber enters the tubes via the bottom openings only.

Description

Vaporiseur à tubes en forme de U  U-shaped tube vaporizer
La présente invention est relative à un vaporiseur. En particulier elle concerne un vaporiseur constitué par un échangeur de chaleur dans lequel un fluide calorigène cède de la chaleur à un liquide à vaporiser, le liquide circulant dans au moins un tube en forme de U raccordé à une plaque. Ce vaporiseur peut par exemple être un vaporiseur de secours, qui vaporise du liquide cryogénique vers un réseau, afin de compenser le débit venant d'une unité cryogénique. The present invention relates to a vaporizer. In particular, it relates to a vaporizer constituted by a heat exchanger in which a heat transfer fluid transfers heat to a liquid to be vaporized, the liquid flowing in at least one U-shaped tube connected to a plate. This vaporizer may for example be a backup vaporizer, which vaporizes cryogenic liquid to a network, to compensate the flow from a cryogenic unit.
Ce système est généralement alimenté par une pompe cryogénique et le liquide vaporisé dans l'épingle est envoyé vers le client quand l'unité de séparation d'air s'arrête.  This system is usually powered by a cryogenic pump and the vaporized liquid in the pin is sent to the customer when the air separation unit stops.
Ainsi dans la Figure 1 , on voit un vaporiseur 4 constitué par une enceinte cylindrique 7 et un dôme hémisphérique, les deux étant séparés par une plaque verticale 13 percée d'ouvertures. Ces ouvertures sont reliées à des tuyaux en forme de U de sorte qu'une extrémité du tuyau est rattachée à une ouverture dans la partie inférieure de la plaque verticale 13 et l'autre extrémité est rattachée à une ouverture dans la partie supérieure de cette plaque. Le dôme est divisé de manière étanche en une partie supérieure 5 et une partie inférieure 3 par une plaque plane horizontale formant une cloison 6. Un liquide à vaporiser est introduit dans la partie inférieure 3 qui forme une chambre d'alimentation et circule dans des tubes en forme de U 17. Certaines ouvertures de tubes dans la plaque 13 sont plus élevées que d'autres, de sorte que le liquide rentre dans les tubes à des niveaux différents. Le liquide arrive vers la partie supérieure 5 du dôme 2 qui constitue une chambre d'évacuation. Là il se trouve entièrement vaporisé grâce à l'échange de chaleur avec de la vapeur d'eau 9 ou autre gaz calorigène envoyé dans l'enceinte 7 et qui circule autour du ou des tubes 17. Le gaz formé 15 en vaporisant le liquide est soutiré de la partie supérieure 5 du dôme 2. La vapeur d'eau refroidie 1 1 sort à l'atmosphère en tête de l'enceinte 7.  Thus in Figure 1, we see a vaporizer 4 consisting of a cylindrical chamber 7 and a hemispherical dome, both being separated by a vertical plate 13 pierced with openings. These openings are connected to U-shaped pipes so that one end of the pipe is attached to an opening in the lower part of the vertical plate 13 and the other end is attached to an opening in the upper part of this plate . The dome is divided in a sealed manner into an upper part 5 and a lower part 3 by a horizontal flat plate forming a partition 6. A liquid to be vaporized is introduced into the lower part 3 which forms a feed chamber and circulates in tubes U-shaped 17. Some tube openings in the plate 13 are higher than others, so that the liquid enters the tubes at different levels. The liquid arrives towards the upper part 5 of the dome 2, which constitutes an evacuation chamber. There it is entirely vaporized by the exchange of heat with steam 9 or other heat transfer gas sent into the chamber 7 and which circulates around the tube or tubes 17. The gas formed by vaporizing the liquid is withdrawn from the upper part 5 of the dome 2. The cooled water vapor 1 1 leaves the atmosphere at the top of the chamber 7.
Ce système de vaporisation a un temps de mise en marche relativement long, même quand la pompe cryogénique envoie le plein débit vers ce système de secours, il faut attendre entre 30 secondes et une minute avant de constater le plein débit de vaporisation. This vaporization system has a relatively long start-up time, even when the cryogenic pump sends the full flow to this system emergency, it is necessary to wait between 30 seconds and a minute before observing the full flow of vaporization.
Ce délai ne présente pas d' inconvénient dans des procédés où une capacité tampon contenant du gaz assure le débit transitoire entre l'arrêt de l'unité et la pleine production du système de vaporisation. Par contre, ce type de capacité tampon est chère spécialement quand les pressions de fonctionnement sont élevées.  This delay is not disadvantageous in processes where a buffer capacity containing gas provides the transient flow between the shutdown of the unit and the full production of the vaporization system. On the other hand, this type of buffer capacity is expensive especially when the operating pressures are high.
Une analyse plus fine de ce temps de réponse montre une réponse linéaire du débit de production en fonction du temps à la montée de la production mais également à la descente de la production. De cette courbe, nous pouvons déduire que la réponse du système est très fortement corrélée à l'inertie liquide de la calandre d'alimentation 3. En effet la production du vaporiseur sera maximale quand tous les tubes 17 seront alimentés, donc quand la calandre d'alimentation 3 sera remplie de liquide.  A more detailed analysis of this response time shows a linear response of the production rate as a function of time to the rise in production but also to the decrease in production. From this curve, we can deduce that the response of the system is very strongly correlated with the liquid inertia of the supply grille 3. Indeed the production of the vaporizer will be maximum when all the tubes 17 will be fed, so when the calender of feed 3 will be filled with liquid.
Un but de l'invention est de réduire le temps de mise en service d'un vaporiseur et de réduire le coût global de l'appareil incorporant le vaporiseur en éliminant ou en réduisant la taille des capacités tampon.  An object of the invention is to reduce the commissioning time of a vaporizer and reduce the overall cost of the apparatus incorporating the vaporizer by eliminating or reducing the size of the buffer capacity.
Selon un objet de l' invention, il est prévu un vaporiseur comprenant plusieurs tubes en forme de U contenus dans une enceinte, chaque tube ayant deux extrémités, les tubes étant disposés dans au moins un plan, l'enceinte étant fermée sur un côté par une plaque ayant autant d'ouvertures qu'il y a d'extrémités de tube, les ouvertures comprenant des ouvertures hautes et des ouvertures basses, chaque tube étant relié par une extrémité haute à une ouverture haute de la plaque et par une extrémité basse à une ouverture basse de la plaque, un dôme recouvrant la plaque du côté opposé à celui des tubes, le dôme étant délimité par une cloison orthogonale au plan des tubes pour former une chambre d'adm ission et une chambre d'évacuation caractérisé en ce que la chambre d'admission est divisée en deux parties par une partition perpendiculaire au plan des tubes et à la cloison pour former une chambre d'entrée de liquide entre la plaque et la partition et une chambre auxiliaire de l'autre côté de la partition, l'entrée de liquide provenant de l'extérieur du vaporiseur débouchant dans la chambre d'entrée et la chambre auxiliaire étant agencée pour recevoir uniquement du liquide provenant de la chambre d'entrée de sorte que le liquide provenant de l'extérieur arrivant dans la chambre d'entrée transite dans les tubes par les ouvertures basses uniquement. According to one object of the invention, there is provided a vaporizer comprising a plurality of U-shaped tubes contained in an enclosure, each tube having two ends, the tubes being arranged in at least one plane, the enclosure being closed on one side by a plate having as many apertures as there are tube ends, the apertures comprising apertures and low apertures, each tube being connected at one end to a top aperture of the plate and at a bottom end to a low opening of the plate, a dome covering the plate on the opposite side to that of the tubes, the dome being delimited by a partition orthogonal to the plane of the tubes to form an admission chamber and an evacuation chamber characterized in that the intake chamber is divided into two parts by a partition perpendicular to the plane of the tubes and the partition to form a liquid inlet chamber between the plate and the partition and a chamber on the other side of the partition, the liquid inlet from the outside of the vaporizer opening into the inlet chamber and the auxiliary chamber being arranged to receive only liquid from the inlet chamber so that the liquid coming from the outside arriving in the entrance chamber passes through the tubes through the low openings only.
Selon d'autres aspects facultatifs :  According to other optional aspects:
la partition comprend une ouverture vers son bord bas pour permettre une circulation de liquide entre la partition et le dôme.  the partition includes an opening towards its bottom edge to allow a circulation of liquid between the partition and the dome.
une espace est formée entre l'extrémité de la partition et la cloison, le volume de la chambre d'entrée est plus petit que celui de la chambre auxiliaire.  a space is formed between the end of the partition and the partition, the volume of the inlet chamber is smaller than that of the auxiliary chamber.
le volume de la chambre d'entrée est au moins deux fois plus petit que celui de la chambre auxiliaire.  the volume of the inlet chamber is at least two times smaller than that of the auxiliary chamber.
les ouvertures basses sont disposées à des distances différentes de la cloison.  the lower openings are arranged at different distances from the partition.
les branches des tubes sont disposées dans des plans horizontaux. I e vaporiseur comprend une arrivée de fluide calorigène débouchant dans l'enceinte.  the branches of the tubes are arranged in horizontal planes. The vaporizer comprises an inlet of circulating fluid opening into the chamber.
la cham bre d' ad m iss i on et la chambre d'évacuation ont substantiellement la même forme et le même volume,  the chamber of ad dition and the evacuation chamber have substantially the same shape and volume,
la cloison est une plaque plane.  the partition is a flat plate.
en usage, le liquide provenant de l'extérieur ne peut pénétrer dans la chambre auxiliaire qu'en passant à travers une ouverture dans la partition ou en passant au dessus de la partition.  in use, the liquid from the outside can enter the auxiliary chamber only through an opening in the partition or passing over the partition.
l'entrée de liquide est formée dans l'enceinte.  the liquid inlet is formed in the enclosure.
l'entrée de liquide est agencée de sorte qu'en usage, le liquide rentre par le bas du vaporiseur.  the liquid inlet is arranged so that in use the liquid enters the bottom of the vaporizer.
Selon un autre objet de l'invention, il est prévu un appareil de séparation par distillation cryogénique comprenant un vaporiseur selon l'une des revendications précédentes et des moyens pour l'alimenter en liquide cryogénique.  According to another object of the invention, there is provided a cryogenic distillation separation apparatus comprising a vaporizer according to one of the preceding claims and means for supplying it with cryogenic liquid.
Selon un autre objet de l'invention, il est prévu un procédé de vaporiser un liquide dans un vaporiseur selon l'une des revendications 1 à 13 dans lequel on envoie un gaz calorigène à l'enceinte, on introduit un liquide à vaporiser dans la chambre d'entrée et on évacue le liquide vaporisé par la chambre d'évacuation. Le dispositif d'amélioration selon l'invention est donc un système de déversoir qui alimente préférentiellement les tubes de l'échangeur à la montée en production du système de vaporisation. Ce déversoir se compose d'une plaque pleine ouverte en haut et muni d'un trou de déconcentration pour la sécurité hydrocarbure situé au plus bas de la cuve. According to another object of the invention, there is provided a method of vaporizing a liquid in a vaporizer according to one of claims 1 to 13 in which a heat-generating gas is sent to the chamber, a liquid to be vaporized is introduced into the inlet chamber and evacuates the liquid vaporized by the evacuation chamber. The improvement device according to the invention is therefore a weir system which preferentially feeds the tubes of the exchanger to the rise in production of the vaporization system. This spillway consists of a solid plate open at the top and equipped with a deconcentration hole for hydrocarbon safety located at the bottom of the tank.
Ce faisant en réduisant la distance entre le déversoir et l'entrée des tubes, on peut réduire le temps d'alimentation des tubes par un facteur de 10 et donc le temps de démarrage de la vaporisation de secours et donc supprimer les capacités tampon. Ce type de dispositif peut être appliqué à tous les liquides, en particulier CO, CO2, O2, N2, Ar, ... By doing this by reducing the distance between the weir and the inlet of the tubes, it is possible to reduce the feeding time of the tubes by a factor of 10 and thus the start-up time of the evacuation and thus to eliminate the buffer capacities. This type of device can be applied to all liquids, in particular CO, CO2, O2, N 2 , Ar, etc.
L'invention sera décrite en plus de détail en se référant aux Figures 2 et 3. La Figure 2 illustre une coupe verticale du vaporiseur et la Figure 3 montre une vue de côté de l'intérieur du vaporiseur de la Figure 2.  The invention will be described in more detail with reference to Figures 2 and 3. Figure 2 illustrates a vertical section of the vaporizer and Figure 3 shows a side view of the interior of the vaporizer of Figure 2.
Le vaporiseur de la Figure 2 diffère de celui de la Figure 1 en ce qu'une plaque pleine 21 forme une partition partielle divisant la partie inférieur 3 du dôme 2 en deux parties inégales. La partie gauche de la Figure 1 correspond à la partie gauche du vaporiseur de la Figure 2. La partition 21 est disposée substantiellement verticalement, de sorte qu'environ un tiers du volume de la partie inférieur 3 se trouve entre cette partition 21 et la plaque 13. La partition 21 ne s'étend pas jusqu'à la plaque horizontale de la cloison 6 et une ouverture 23 est formée au milieu de la partition 21 à son bord bas.  The vaporizer of FIG. 2 differs from that of FIG. 1 in that a solid plate 21 forms a partial partition dividing the lower part 3 of the dome 2 into two unequal parts. The left part of FIG. 1 corresponds to the left part of the vaporizer of FIG. 2. The partition 21 is arranged substantially vertically, so that about one third of the volume of the lower part 3 is located between this partition 21 and the plate 13. The partition 21 does not extend to the horizontal plate of the partition 6 and an opening 23 is formed in the middle of the partition 21 at its bottom edge.
En usage, le liquide pénètre de l'extérieur dans l'espace de la partie inférieure 3 uniquement par une entrée disposée entre la plaque 13 et la partition 21 . Comme l'ouverture 23 est petite, le liquide s'accumule dans cette espace et le niveau de liquide monte de sorte que tous les tuyaux 17 débouchant dans la plaque 13 sont alimentés. Quand le niveau plus haut de la plaque 21 est atteint, le liquide se déverse de l'autre côté de la plaque 21 . Pour éviter l'accumulation d'impuretés, telles que des hydrocarbures, le liquide peut également passer dans l'ouverture 23.  In use, the liquid enters from the outside into the space of the lower part 3 only through an inlet disposed between the plate 13 and the partition 21. As the opening 23 is small, the liquid accumulates in this space and the liquid level rises so that all the pipes 17 opening into the plate 13 are fed. When the higher level of the plate 21 is reached, the liquid flows to the other side of the plate 21. To avoid the accumulation of impurities, such as hydrocarbons, the liquid can also pass into the opening 23.
Dans la F ig ure 3, on vo it la plaque 13, les ouvertures n'étant pas illustrées dans un souci de simplification. La plaque 21 a un bord horizontal et un bord courbe qui épouse l'intérieur de la partie inférieure 3 du dôme 2.  In FIG. 3, the plate 13 is seen, the openings being not illustrated for the sake of simplification. The plate 21 has a horizontal edge and a curved edge that matches the interior of the lower part 3 of the dome 2.
L'invention s'applique également à la vaporisation de liquides qui se condensent à des tem pératures au-dessus de températures cryogéniques.  The invention is also applicable to the vaporization of liquids which condense at temperatures above cryogenic temperatures.

Claims

REVENDICATIONS
1 . Vaporiseur comprenant plusieurs tubes (17) en forme de U contenus dans une enceinte (7), chaque tube ayant deux extrémités, les tubes étant disposés dans au moins un plan, l'enceinte étant fermée sur un côté par une plaque (13) ayant autant d'ouvertures qu'il y a d'extrémités de tube, les ouvertures comprenant des ouvertures hautes et des ouvertures basses, chaque tube étant relié par une extrémité haute à une ouverture haute de la plaque et par une extrémité basse à une ouverture basse de la plaque, un dôme (2) recouvrant la plaque du côté opposé à celui des tubes, le dôme étant délimité par une cloison (6) orthogonale au plan des tubes pour former une chambre d'admission (3) et une chambre d'évacuation (5) caractérisé en ce que la chambre d'admission est divisée en deux parties par une partition (21 ) perpendiculaire au plan des tubes et à la cloison pour former une chambre d'entrée de liquide entre la plaque et la partition et une chambre auxiliaire de l'autre côté de la partition , l'entrée de liquide provenant de l'extérieur du vaporiseur débouchant dans la chambre d'entrée et la chambre auxiliaire étant agencée pour recevoir uniquement du liquide provenant de la chambre d'entrée de sorte que le l iqu ide provenant de l'extérieur arrivant dans la chambre d'entrée transite dans les tubes par les ouvertures basses uniquement. 1. Vaporizer comprising a plurality of tubes (17) U-shaped contained in an enclosure (7), each tube having two ends, the tubes being arranged in at least one plane, the enclosure being closed on one side by a plate (13) having as many openings as there are tube ends, the openings comprising high openings and low openings, each tube being connected by a high end to a top opening of the plate and a low end to a low opening of the plate, a dome (2) covering the plate on the side opposite to that of the tubes, the dome being delimited by a partition (6) orthogonal to the plane of the tubes to form an intake chamber (3) and a chamber of discharge (5) characterized in that the inlet chamber is divided into two parts by a partition (21) perpendicular to the plane of the tubes and the partition to form a liquid inlet chamber between the plate and the partition and a auxiliary room on the other side of the partition, the liquid inlet from the outside of the vaporizer opening into the inlet chamber and the auxiliary chamber being arranged to receive only liquid from the inlet chamber so that the The liquid from the outside entering the inlet chamber passes through the tubes through the lower openings only.
2. Vaporiseur selon la revendication 1 dans lequel la partition (21 ) comprend une ouverture (23) vers son bord bas pour permettre une petite circulation de liquide entre la partition (21 ) et le dôme (2). 2. Vaporizer according to claim 1 wherein the partition (21) comprises an opening (23) to its lower edge to allow a small flow of liquid between the partition (21) and the dome (2).
3. Vaporiseur selon la revendication 1 ou 2 dans lequel une espace est formée entre l'extrémité de la partition (21 ) et la cloison (6). 3. Vaporizer according to claim 1 or 2 wherein a space is formed between the end of the partition (21) and the partition (6).
4. Vaporiseur selon l'une des revendications précédentes dans lequel le volume de la chambre d'entrée est plus petit que celui de la chambre auxiliaire. 4. Vaporizer according to one of the preceding claims wherein the volume of the inlet chamber is smaller than that of the auxiliary chamber.
5. Vaporiseur selon la revendication 4 dans lequel le volume de la chambre d'entrée est au moins deux fois plus petit que celui de la chambre auxiliaire. 5. Vaporizer according to claim 4 wherein the volume of the inlet chamber is at least two times smaller than that of the auxiliary chamber.
6. Vaporiseur selon l'une des revendications précédentes dans lequel les ouvertures basses sont disposées à des distances différentes de la cloison (6). 6. Vaporizer according to one of the preceding claims wherein the lower openings are arranged at different distances from the partition (6).
7. Vaporiseur selon l'une des revendications précédentes dans lequel les branches des tubes (17) sont disposés dans des plans horizontaux. 7. Vaporizer according to one of the preceding claims wherein the branches of the tubes (17) are arranged in horizontal planes.
8. Vaporiseur selon l'une des revendications précédentes comprenant une arrivée de fluide calorigène débouchant dans l'enceinte (9). 8. Vaporizer according to one of the preceding claims comprising an inlet of circulating fluid opening into the chamber (9).
9. Vaporiseur selon l'une des revendications précédentes dans lequel la chambre d'admission et la chambre d'évacuation ont substantiellement la même forme et le même volume. 9. Vaporizer according to one of the preceding claims wherein the inlet chamber and the evacuation chamber have substantially the same shape and the same volume.
10. Vaporiser selon l'une des revendications précédentes dans lequel la cloison (6) est une plaque plane. 10. Spray according to one of the preceding claims wherein the partition (6) is a flat plate.
1 1 . Vaporiser selon l'une des revendications précédentes dans lequel, en usage, le liquide provenant de l'extérieur ne peut pénétrer dans la chambre auxiliaire qu'en passant à travers une ouverture dans la partition ou en passant au dessus de la partition. 1 1. Spray according to one of the preceding claims wherein, in use, the liquid from the outside can enter the auxiliary chamber only through an opening in the partition or passing over the partition.
12. Vaporiser selon l'une des revendications précédentes dans lequel l'entrée de liquide est formée dans l'enceinte. Spray according to one of the preceding claims wherein the liquid inlet is formed in the chamber.
13. Vaporiser selon la revendication 12 dans lequel l'entrée de liqui est agencée de sorte qu'en usage, le liquide rentre par le bas du vaporiseur. 13. Spray according to claim 12 wherein the liquid inlet is arranged so that in use, the liquid enters from the bottom of the vaporizer.
14. Appareil de séparation par distillation cryogénique comprenant un vaporiseur (4) selon l'une des revendications précédentes et des moyens (1 ) pour l'alimenter en liquide cryogénique. 14. Apparatus for separation by cryogenic distillation comprising a vaporizer (4) according to one of the preceding claims and means (1) for supplying cryogenic liquid.
15. Procédé de vaporiser un liquide dans un vaporiseur (4) selon l'une des revendications 1 à 13 dans lequel on envoie un gaz calorigène à l'enceinte (7), on introduit un liquide à vaporiser dans la chambre d'entrée (3) et on évacue le liquide vaporisé par la chambre d'évacuation (5). 15. A method of vaporizing a liquid in a vaporizer (4) according to one of claims 1 to 13 in which a heat-generating gas is sent to the chamber (7), a liquid to be vaporized is introduced into the inlet chamber ( 3) and the vaporized liquid is discharged through the evacuation chamber (5).
EP11736387.9A 2010-08-02 2011-07-29 U-tube vaporizer Active EP2601472B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1056376A FR2963417B1 (en) 2010-08-02 2010-08-02 U-SHAPED TUBE VAPORIZER
PCT/EP2011/063061 WO2012016915A1 (en) 2010-08-02 2011-07-29 U-tube vaporizer

Publications (2)

Publication Number Publication Date
EP2601472A1 true EP2601472A1 (en) 2013-06-12
EP2601472B1 EP2601472B1 (en) 2015-03-04

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US (1) US9109795B2 (en)
EP (1) EP2601472B1 (en)
JP (1) JP2013532815A (en)
KR (1) KR101816951B1 (en)
CN (1) CN103052861B (en)
ES (1) ES2535390T3 (en)
FR (1) FR2963417B1 (en)
WO (1) WO2012016915A1 (en)

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Also Published As

Publication number Publication date
FR2963417B1 (en) 2014-03-28
US20130125839A1 (en) 2013-05-23
CN103052861B (en) 2016-04-13
KR20140005847A (en) 2014-01-15
US9109795B2 (en) 2015-08-18
CN103052861A (en) 2013-04-17
FR2963417A1 (en) 2012-02-03
ES2535390T3 (en) 2015-05-11
WO2012016915A1 (en) 2012-02-09
JP2013532815A (en) 2013-08-19
EP2601472B1 (en) 2015-03-04
KR101816951B1 (en) 2018-01-09

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