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EP0086162A1 - High temperature heat exchanger with a metallic pipe bundle - Google Patents

High temperature heat exchanger with a metallic pipe bundle Download PDF

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Publication number
EP0086162A1
EP0086162A1 EP83400271A EP83400271A EP0086162A1 EP 0086162 A1 EP0086162 A1 EP 0086162A1 EP 83400271 A EP83400271 A EP 83400271A EP 83400271 A EP83400271 A EP 83400271A EP 0086162 A1 EP0086162 A1 EP 0086162A1
Authority
EP
European Patent Office
Prior art keywords
gas
enclosure
tubes
pipes
tubular
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
EP83400271A
Other languages
German (de)
French (fr)
Other versions
EP0086162B1 (en
Inventor
Paul Landet
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.)
Creusot Loire SA
Original Assignee
Creusot Loire SA
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 Creusot Loire SA filed Critical Creusot Loire SA
Publication of EP0086162A1 publication Critical patent/EP0086162A1/en
Application granted granted Critical
Publication of EP0086162B1 publication Critical patent/EP0086162B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • 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
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • 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
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F28D7/0083—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids with units having particular arrangement relative to a supplementary heat exchange medium, e.g. with interleaved units or with adjacent units arranged in common flow of supplementary heat exchange medium
    • F28D7/0091—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids with units having particular arrangement relative to a supplementary heat exchange medium, e.g. with interleaved units or with adjacent units arranged in common flow of supplementary heat exchange medium the supplementary medium flowing in series through the units
    • 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
    • F28D7/16—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 being arranged in parallel spaced relation
    • F28D7/1607—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 being arranged in parallel spaced relation with particular pattern of flow of the heat exchange media, e.g. change of flow direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/26—Safety or protection arrangements; Arrangements for preventing malfunction for allowing differential expansion between elements

Definitions

  • the present invention relates to a static heat exchanger with a metal tube bundle making it possible to recover the heat from a gas or smoke stream to heat a second gas stream.
  • This exchanger is in particular intended for the recovery at high temperature of the heat of combustion fumes from ovens or gasifiers to allow the heating of combustion or drying air.
  • the present invention further aims to provide a heat exchanger provided with several outlets for taking the gas heated at different temperatures. It leads to a circulation of the gas to be heated such that there is: a cooling of the tubular plates, a symmetrical evolution of the temperatures starting from the tubular plates towards the central outlet of the gas to be heated, a uniform circumferential distribution of the temperatures in any plane perpendicular to the axis of the exchanger. This results in the use of thin tubular plates, limited thermal stresses and the use of steels with little or no refractory.
  • the exchanger comprises a plurality of metal tubes, the ends of which terminate in tubular plates and which channel a first stream of hot gas, these tubes being housed in an enclosure closed by said tubular plates and provided with '' an inlet and an outlet for a stream of gas which circulates around the tubes and it is essentially characterized in that the enclosure has lateral inlets located near the tubular plates and lateral outlets located between said inlets so that the enclosure is crossed by two streams of gas flowing in opposite directions from the tubular plates to the said outlets and on the other hand from the internal partitions traversed by the tubes and forming baffles for the flow of the gas which passes alternately in the center and on the periphery of the enclosure.
  • the exchanger has intermediate outlets making it possible to draw gas between the inlets and the outlets.
  • each tubular plate is joined to the rest of the enclosure by a compensator.
  • At least one partition is held to a deflector having a shape of revolution and that the gas to be heated.
  • the single figure is a longitudinal section of the exchanger according to the invention.
  • the exchanger according to the invention comprises a plurality of metal tubes 1 which extend parallel to the longitudinal axis 11 of the exchanger.
  • the ends of these tubes end on tubular plates 21 and 22 to which they are welded.
  • Sleeves 6 are mounted at the ends of the tubes to protect the welds.
  • the tubular plates 21 and 22 form part of a closed enclosure 2 in which is housed the bundle of tubes 1.
  • a current of hot gas or hot smoke is brought by a conduit 31 to the entrances of the tubes flush with the upstream tubular plate 21.
  • the outlets of the tubes flush with the downstream tubular plate 22 open into a conduit 32 which channels the gas at the outlet of the exchanger to evacuate.
  • the enclosure is composed of ferrules 25, 26, 27 welded together so as to form a conduit or a chamber closed at its ends by the tubular plates 21 and 22.
  • Each tubular plate 21 or 22 is joined to the ferrule 25 or 26 of the enclosure by means of a bellows expansion compensator 23 or 24.
  • the enclosure 2 comprises, near the upstream tubular plate 21, a first set of inlet pipes 41 which are mounted laterally and open inside by inlet orifices 411. It also comprises near the tubular plate downstream 22, a second set of inlet pipes 42 which are mounted laterally and which open inside through inlet openings 421. These inlet pipes 41 and 42 serve to introduce a second current into the enclosure. gas intended to be heated by convection. Between the sets of inlet pipes, in the middle part, the enclosure comprises a set of outlet pipes 43 which are mounted laterally and open out through orifices 431. Between each set of inlet pipes 41 or 42 and the set of outlet pipes 43, the enclosure comprises a set of intermediate pipes 44 and 45 which are mounted laterally and which open inside through orifices 441 and 451. These intermediate pipes allow the heated gas to be taken at intermediate temperatures.
  • each set has three tubes arranged at 120 ° one from the other.
  • Partitions 51 and 52 are mounted inside the enclosure, perpendicular to the tubes which pass through them.
  • Each partition marked 51 provides a central opening and has the shape of a flat ring crossed by a part of the bundle tubes.
  • Each partition marked 52 provides an annular opening with the enclosure for the passage of gas.
  • the partitions 51 and 52 are arranged alternately so as to form baffles for the flow of gas which passes alternately through the central openings of the partitions 51 and through the peripheral annular openings formed by the partitions 52.
  • Each end partition 51 with central opening is located closer to the nearest tube plate 21 than the inlet pipes 31.
  • This partition is integral with a deflector 53 which is fixed to the enclosure 2 beyond the pipes d 'Inlets 41.
  • This deflector forms an annular space into which open the orifices 411. This space is open towards the tubular plate 21 so as to deflect the gas flow towards the space between the partition 51 and said tubular plate.
  • One of the partitions 52 providing an annular opening for the gas is joined to a flange 54 of flared shape, in the direction of flow of the gas, and which is fixed inside the enclosure.
  • This collar forms an annular chamber into which the lateral orifices 441 of the intermediate tubes 44 open.
  • This collar is provided with lateral orifices 541 which allow the passage of gas towards the outlet tubes 43.
  • partitions are integral with ferrules of revolution such as the deflectors 53 or 54, these ferrules, welded to the enclosure, allowing the expansions.
  • Other partitions are held by fasteners allowing radial expansions.
  • the tubes pass with clearance in the partitions 51 and 52.
  • the tube bundle is not supported by the tubular plates but it is supported by the partitions 51 and 52 which are vertical.
  • the conduits 31 and 32 are insulated by a layer of insulation.
  • the exchanger is also insulated by an insulating layer 4 enveloping it externally.
  • the enclosure 2 can be protected internally, in its middle part, by an insulating sleeve of metallic or refractory insulation 5 fixed on the internal wall.
  • the relatively cold gas that one seeks to heat is brought into the enclosure by the pipes. inlet 41 and 42. It flows around the tubes 1 in two opposite currents (shown by the arrows). Each current flows in a zigzag fashion, from the tubular plate towards the middle of the exchanger, passing alternately through the central openings formed in the partitions 51 and through the peripheral openings formed by the partitions 52. After reheating in contact with the tubes 1, the hot gas is evacuated through the outlet pipes 43. In the process, gas at intermediate temperature is taken off through the intermediate pipes 44 and 45.
  • the two tubular plates 21 and 22 are, on the inner side, in contact with cold gas and the expansions are carried out symmetrically from the median plane passing through the axes of the outlet pipes.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

1. Heat exchanger incorporating an enclosure (2) provided with an entry (41) and an exit (43) for a gas, in which are housed metal tubes (1) channelling a hot gas and the ends of which terminate in tube plates (21, 22) which close the said enclosure (2) in which are housed internal partitions (51, 52) compelling the gas to circulate alternately at the centre and at the periphery of the enclosure, characterised in that it incorporates a set of entry pipes (41, 42) which is situated near each tube plate (21, 22) and a set of exit pipes (43) which is situated between the said sets of entry pipes so that there shall be two gas streams flowing in opposite directions.

Description

La présente invention se rapporte à un échangeur thermique statique à faisceau tubulaire métallique permettant de récupérer la chaleur d'un courant de gaz ou de fumées pour réchauffer un second courant de gaz. Cet échangeur est notamment destiné à la récupération à haute température de la chaleur des fumées de combustion des fours ou des gazogènes pour permettre le réchauffage d'air de combustion ou de séchage.The present invention relates to a static heat exchanger with a metal tube bundle making it possible to recover the heat from a gas or smoke stream to heat a second gas stream. This exchanger is in particular intended for the recovery at high temperature of the heat of combustion fumes from ovens or gasifiers to allow the heating of combustion or drying air.

La présente invention a pour but en outre de fournir un échangeur de chaleur muni de plusieurs sorties permettant de prélever le gaz réchauffé à différentes températures. Elle conduit à une circulation du gaz à réchauffer telle qu'il y ait : un refroidissement des plaques tubulaires, une évolution symétrique des températures en partant des plaques tubulaires vers la sortie centrale du gaz à réchauffer, une répartition circonférentielle uniforme des températures dans tout plan perpendiculaire à l'axe de l'échangeur. Ceci se traduit par la mise en oeuvre de plaques tubulaires de faibles épaisseurs, des contraintes thermiques limitées et l'utilisation d'aciers pas ou peu réfractaires.The present invention further aims to provide a heat exchanger provided with several outlets for taking the gas heated at different temperatures. It leads to a circulation of the gas to be heated such that there is: a cooling of the tubular plates, a symmetrical evolution of the temperatures starting from the tubular plates towards the central outlet of the gas to be heated, a uniform circumferential distribution of the temperatures in any plane perpendicular to the axis of the exchanger. This results in the use of thin tubular plates, limited thermal stresses and the use of steels with little or no refractory.

Conformément à l'invention, l'échangeur comporte une pluralité de tubes métalliques dont les extrémités se terminent dans des plaques tubulaires et qui canalisent un premier courant de gaz chaud, ces tubes étant logés dans une enceinte fermée par les dites plaques tubulaires et pourvue d'une entrée et d'une sortie d'un courant de gaz qui circule autour des tubes et il est essentiellement caractérisé par le fait que l'enceinte comporte des entrées latérales situées près des plaques tubulaires et des sorties latérales situées entre lesdites entrées de manière que l'enceinte soit traversée par deux courants de gaz s'écoulant en sens opposés des plaques tubulaires jusqu'aux dites sorties et d'autre part des cloisons internes traversées par les tubes et formant des chicanes pour l'écoulement du gaz qui passe alternativement au centre et à la périphérie de l'enceinte.According to the invention, the exchanger comprises a plurality of metal tubes, the ends of which terminate in tubular plates and which channel a first stream of hot gas, these tubes being housed in an enclosure closed by said tubular plates and provided with '' an inlet and an outlet for a stream of gas which circulates around the tubes and it is essentially characterized in that the enclosure has lateral inlets located near the tubular plates and lateral outlets located between said inlets so that the enclosure is crossed by two streams of gas flowing in opposite directions from the tubular plates to the said outlets and on the other hand from the internal partitions traversed by the tubes and forming baffles for the flow of the gas which passes alternately in the center and on the periphery of the enclosure.

Selon une caractéristique de l'invention, l'échangeur comporte des sorties intermédiaires permettant de prélever du gaz entre les entrées et les sorties.According to a characteristic of the invention, the exchanger has intermediate outlets making it possible to draw gas between the inlets and the outlets.

Selon une autre caractéristique, chaque plaque tubulaire est réunie au reste de l'enceinte par un compensateur.According to another characteristic, each tubular plate is joined to the rest of the enclosure by a compensator.

Selon une caractéristique, au moins une cloison est tenue à un déflecteur ayant une forme de révolution et quidéuLs le gaz à réchauffer.According to one characteristic, at least one partition is held to a deflector having a shape of revolution and that the gas to be heated.

L'invention va maintenant être décrite avec plus de détails en se référant à un mode de réalisation donné à titre d'exemple et représenté par les dessins annexés.The invention will now be described in more detail with reference to an embodiment given by way of example and represented by the accompanying drawings.

La figure unique est une coupe longitudinale de l'échangeur selon l'invention.The single figure is a longitudinal section of the exchanger according to the invention.

L'échangeur selon l'invention comporte une pluralité de tubes métalliques 1 qui s'étendent parallèlement à l'axe longitudinal 11 de l'échangeur. Les extrémités de ces tubes se terminent sur des plaques tubulaires 21 et 22 auxquelles ils sont soudés. Des manchons 6 sont montés aux extrémités des tubes pour protéger les soudures.The exchanger according to the invention comprises a plurality of metal tubes 1 which extend parallel to the longitudinal axis 11 of the exchanger. The ends of these tubes end on tubular plates 21 and 22 to which they are welded. Sleeves 6 are mounted at the ends of the tubes to protect the welds.

Les plaques tubulaires 21 et 22 font partie d'une enceinte fermée 2 dans laquelle est logé le faisceau de tubes 1. Un courant de gaz chaud ou de fumées chaudes est amené par un conduit 31 jusqu'aux entrées des tubes affleurant la plaque tubulaire amont 21. Les sorties des tubes affleurant la plaque tubulaire aval 22 débouchent dans un conduit 32 qui canalise le gaz à la sortie de l'échangeur pour r évacuer.The tubular plates 21 and 22 form part of a closed enclosure 2 in which is housed the bundle of tubes 1. A current of hot gas or hot smoke is brought by a conduit 31 to the entrances of the tubes flush with the upstream tubular plate 21. The outlets of the tubes flush with the downstream tubular plate 22 open into a conduit 32 which channels the gas at the outlet of the exchanger to evacuate.

L'enceinte est composée de viroles 25, 26, 27 soudés entre elles de manière à former un conduit ou une chambre fermée à ses extrémités par les plaques tubulaires 21 et 22. Chaque plaque tubulaire 21 ou 22 est réunie à la virole 25 ou 26 de l'enceinte par l'intermédiaire d'un compensateur de dilatation à soufflet 23 ou 24.The enclosure is composed of ferrules 25, 26, 27 welded together so as to form a conduit or a chamber closed at its ends by the tubular plates 21 and 22. Each tubular plate 21 or 22 is joined to the ferrule 25 or 26 of the enclosure by means of a bellows expansion compensator 23 or 24.

L'enceinte 2 comporte près de la plaque tubulaire amont 21, un premier jeu de tubulures d'entrée 41 qui sont montées latéralement et débouchent à l'intérieur par des orifices d'entrée 411.-Elle comporte par ailleurs près de la plaque tubulaire aval 22, un second jeu de tubulures d'entrée 42 qui sont montées latéralement et qui débouchent à l'intérieur par des orifices d'entrée 421. Ces tubulures d'entrée 41 et 42 servent à introduire dans l'enceinte un second.courant de gaz destiné à être réchauffé par convection. Entre les jeux de tubulures d'entrée, en partie médiane, l'enceinte comporte un jeu de tubulures de sortie 43 qui sont montées latéralement et débouchent par des orifices 431. Entre chaque jeu de tubulures d'entrée 41 ou 42 et le jeu de tubulures de sortie 43, l'enceinte comporte un jeu de tubulures intermédiaires 44 et 45 qui sont montées latéralement et qui débouchent à l'intérieur par des orifices 441 et 451. Ces tubulures intermédiaires permettent de prélever le gaz réchauffé, à des températures intermédiaires.The enclosure 2 comprises, near the upstream tubular plate 21, a first set of inlet pipes 41 which are mounted laterally and open inside by inlet orifices 411. It also comprises near the tubular plate downstream 22, a second set of inlet pipes 42 which are mounted laterally and which open inside through inlet openings 421. These inlet pipes 41 and 42 serve to introduce a second current into the enclosure. gas intended to be heated by convection. Between the sets of inlet pipes, in the middle part, the enclosure comprises a set of outlet pipes 43 which are mounted laterally and open out through orifices 431. Between each set of inlet pipes 41 or 42 and the set of outlet pipes 43, the enclosure comprises a set of intermediate pipes 44 and 45 which are mounted laterally and which open inside through orifices 441 and 451. These intermediate pipes allow the heated gas to be taken at intermediate temperatures.

Les tubulures d'un même jeu, par exemple les tubulures 41, sont situées dans un même plan. La disposition rayonnante d'un jeu de tubulures permet une bonne répartition lors de l'introduction ou du prélèvement du gaz à réchauffer. Par exemple chaque jeu comporte trois tubulures disposées à 120° l'une de l'autre.The pipes of the same set, for example the pipes 41, are located in the same plane. The radiating arrangement of a set of tubes allows good distribution during the introduction or removal of the gas to be heated. For example, each set has three tubes arranged at 120 ° one from the other.

Des cloisons 51 et 52 sont montées à l'intérieur de l'enceinte, perpendiculairement aux tubes qui les traversent. Chaque cloison repérée 51 ménage une ouverture centrale et a la forme d'un anneau plan traversé par une partie des tubes du faisceau. Chaque cloison repérée 52 ménage avec l'enceinte une ouverture annulaire pour le passage du gaz. Les cloisons 51 et 52 sont rangées en alternance de manière à former des chicanes pour l'écoulement du gaz qui passe alternativement par les ouvertures centrales des cloisons 51 et par les ouvertures annulaires périphériques ménagées par les cloisons 52.Partitions 51 and 52 are mounted inside the enclosure, perpendicular to the tubes which pass through them. Each partition marked 51 provides a central opening and has the shape of a flat ring crossed by a part of the bundle tubes. Each partition marked 52 provides an annular opening with the enclosure for the passage of gas. The partitions 51 and 52 are arranged alternately so as to form baffles for the flow of gas which passes alternately through the central openings of the partitions 51 and through the peripheral annular openings formed by the partitions 52.

Chaque cloison extrême 51 à ouverture centrale est située plus près de la plaque tubulaire 21 la plus proche que les tubulures d'entrées 31. Cette cloison est solidaire d'un déflecteur 53 qui est fixé à l'enceinte 2 au-delà des tubulures d'entrées 41. Ce déflecteur forme un espace annulaire dans lequel débouchent les orifices 411. Cet espace est ouvert vers la plaque tubulaire 21 de manière à dévier le courant de gaz vers l'espace compris entre la cloison 51 et ladite plaque tubulaire.Each end partition 51 with central opening is located closer to the nearest tube plate 21 than the inlet pipes 31. This partition is integral with a deflector 53 which is fixed to the enclosure 2 beyond the pipes d 'Inlets 41. This deflector forms an annular space into which open the orifices 411. This space is open towards the tubular plate 21 so as to deflect the gas flow towards the space between the partition 51 and said tubular plate.

Une des cloisons 52 ménageant une ouverture annulaire pour le gaz est réunie à une collerette 54 de forme évasée, dans le sens d'écoulement du gaz, et qui est fixée à l'intérieur de l'enceinte. Cette collerette forme une chambre annulaire dans laquelle débouchent les orifices latéraux 441 des tubulures intermédiaires 44. Cette collerette est pourvue d'orifices latéraux 541 qui permettent le passage du gaz vers les tubulures de sortie 43.One of the partitions 52 providing an annular opening for the gas is joined to a flange 54 of flared shape, in the direction of flow of the gas, and which is fixed inside the enclosure. This collar forms an annular chamber into which the lateral orifices 441 of the intermediate tubes 44 open. This collar is provided with lateral orifices 541 which allow the passage of gas towards the outlet tubes 43.

Certaines des cloisons sont solidaires de viroles de révolution telles que les déflecteurs 53 ou 54, ces viroles, soudées à l'enceinte, permettant les dilatations. D'autres cloisons sont tenues par des attaches permettant les dilatations radiales.Some of the partitions are integral with ferrules of revolution such as the deflectors 53 or 54, these ferrules, welded to the enclosure, allowing the expansions. Other partitions are held by fasteners allowing radial expansions.

Les tubes passent avec jeu dans les cloisons 51 et 52. Le faisceau tubulaire n'est pas supporté par les plaques tubulaires mais il est supporté par les cloisons 51 et 52 qui sont verticales.The tubes pass with clearance in the partitions 51 and 52. The tube bundle is not supported by the tubular plates but it is supported by the partitions 51 and 52 which are vertical.

Les conduits 31 et 32 sont isolés par une couche d'isolant. L'échangeur est également calorifugé par une couche d'isolant 4 l'enveloppant extérieurement. L'enceinte 2 peut être protégée intérieurement, dans sa partie médiane, par un manchon isolant de calorifuge métallique ou réfractaire 5 fixé sur la paroi interne.The conduits 31 and 32 are insulated by a layer of insulation. The exchanger is also insulated by an insulating layer 4 enveloping it externally. The enclosure 2 can be protected internally, in its middle part, by an insulating sleeve of metallic or refractory insulation 5 fixed on the internal wall.

Le fonctionnement de l'échangeur va maintenant être expliqué.The operation of the exchanger will now be explained.

Le gaz à haute température qui arrive sur la pl3que tubulaire amont 21 pénètre dans les tubes 1 où il circule suivant le sens des flèches. Il sort des tubes 1 pour être évacué par le conduit 32. Le gaz relativement froid que l'on cherche à réchauffer est amené dans l'enceinte par les tubulures d'entrée 41 et 42. Il circule autour des tubes 1 en deux courants opposés (figurés par les flèches). Chaque courant circule en zig zag,de la plaque tubulaire vers le milieu de l'échangeur, en passant alternativement par les ouvertures centrales ménagées dans les cloisons 51 et par les ouvertures périphériques ménagées par les cloisons 52. Après réchauffage au contact des tubes 1, le gaz chaud est évacué par les tubulures de sortie 43. Au passage, du gaz à température intermédiaire est prélevé par les tubulures intermédiaires 44 et 45.The high temperature gas which arrives on pl 3 that upstream tubular 21 enters the tubes 1 where it circulates in the direction of the arrows. It leaves the tubes 1 to be evacuated via the conduit 32. The relatively cold gas that one seeks to heat is brought into the enclosure by the pipes. inlet 41 and 42. It flows around the tubes 1 in two opposite currents (shown by the arrows). Each current flows in a zigzag fashion, from the tubular plate towards the middle of the exchanger, passing alternately through the central openings formed in the partitions 51 and through the peripheral openings formed by the partitions 52. After reheating in contact with the tubes 1, the hot gas is evacuated through the outlet pipes 43. In the process, gas at intermediate temperature is taken off through the intermediate pipes 44 and 45.

Les deux plaques tubulaires 21 et 22 sont, du c8té intérieur, au contact du gaz froid et les dilatations s'effectuent symétriquement à partir du plan médian passant par les axes des tubulures de sorties.The two tubular plates 21 and 22 are, on the inner side, in contact with cold gas and the expansions are carried out symmetrically from the median plane passing through the axes of the outlet pipes.

Il est bien entendu que l'on peut, sans sortir du cadre de l'invention, imaginer des variantes et des perfectionnements de détails et de même envisager l'emploi de moyens équiva lents.It is understood that one can, without departing from the scope of the invention, imagine variants and improvements of details and even consider the use of equivalent means.

Claims (4)

1.- Echangeur thermique comportant une pluralité de tubes métalliques(l)dont les extrémités se terminent dans des plaques tubulaires(21-22) et qui canalisent un courant de gaz chaud, ces tubes(l)étant logés dans une enceinte(2) fermée par lesdites plaques tubulaires et pourvue d'une entrée et d'une sortie d'un courant de gaz qui circule autour des tubes, caractérisé par le fait que l'enceinte comporte d'une part des entrées (41 et 4Z situées près des plaques tubulaires (21-22) et des sorties (43) situées entre les dites entrées de manière que l'enceinte soit traversée par.deux courants de gaz s'écoulant en sens opposés et d'autre part des cloisons internes (51 et 52) traversées par les tubes et qui forment des chicanes pour l'écoulement du gaz qui passe alternativement au centre et à la périphérie de l'enceinte.1.- Heat exchanger comprising a plurality of metal tubes (l) the ends of which terminate in tubular plates (21-22) and which channel a stream of hot gas, these tubes (l) being housed in an enclosure (2) closed by said tubular plates and provided with an inlet and an outlet for a stream of gas which circulates around the tubes, characterized in that the enclosure comprises on the one hand inlets (41 and 4Z located near the tubular plates (21-22) and outlets (43) located between said inlets so that the enclosure is traversed by two streams of gas flowing in opposite directions and on the other hand internal partitions (51 and 52 ) crossed by the tubes and which form baffles for the flow of gas which alternately passes through the center and the periphery of the enclosure. 2.- Echangeur selon la revendication 1, caractérisé par le fait qu'il comporte des sorties intermédiaires (45) permettant de prélever du gaz entre les entrées et les sorties.2.- Exchanger according to claim 1, characterized in that it comprises intermediate outlets (45) allowing gas to be taken between the inlets and the outlets. 3.- Echangeur selon l'une quelconque des revendications précédentes, caractérisé par le fait que chaque plaque tubulaire (21,22) est réunie au reste de l'enceinte (2) par un compensateur (23,24).3.- Exchanger according to any one of the preceding claims, characterized in that each tubular plate (21,22) is joined to the rest of the enclosure (2) by a compensator (23,24). 4.- Echangeur selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'au moins une cloison (51,52) est tenue à un déflecteur (53,54) ayant une forme de révolution et qui dévie le gaz à réchauffer.4.- Exchanger according to any one of the preceding claims, characterized in that at least one partition (51,52) is held in a deflector (53,54) having a shape of revolution and which deflects the gas to be heated .
EP19830400271 1982-02-08 1983-02-08 High temperature heat exchanger with a metallic pipe bundle Expired EP0086162B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8201959A FR2521275A1 (en) 1982-02-08 1982-02-08 HEAT EXCHANGER WITH METAL TUBULAR BEAM FOR HIGH TEMPERATURES
FR8201959 1982-02-08

Publications (2)

Publication Number Publication Date
EP0086162A1 true EP0086162A1 (en) 1983-08-17
EP0086162B1 EP0086162B1 (en) 1985-08-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830400271 Expired EP0086162B1 (en) 1982-02-08 1983-02-08 High temperature heat exchanger with a metallic pipe bundle

Country Status (3)

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EP (1) EP0086162B1 (en)
DE (1) DE3360632D1 (en)
FR (1) FR2521275A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997037189A1 (en) * 1996-04-03 1997-10-09 Cabot Corporation Improved heat exchanger
US6024960A (en) * 1998-04-17 2000-02-15 Otto Torbjorn Hansen And Marianne Hansen Rose-hip formulations as anti-inflammatory natural medicine for alleviating/reducing symptoms associated with inflammation and arthritis
WO2004113814A1 (en) * 2003-06-24 2004-12-29 Daimlerchrysler Ag Heat exchanger comprising a housing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3643303A1 (en) * 1986-12-18 1988-06-30 Uhde Gmbh DEVICE FOR HEAT EXCHANGE, ESPECIALLY BETWEEN SYNTHESIS GAS AND BOILER FEED WATER

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE301142C (en) *
DE845052C (en) * 1942-03-27 1952-07-28 Basf Ag Heat exchanger
GB1154809A (en) * 1966-06-27 1969-06-11 Waagner Biro Ag Improvements relating to Multiple-Tube Heat Exchangers
FR1585849A (en) * 1968-10-21 1970-01-30
FR2183613A1 (en) * 1972-05-12 1973-12-21 Trepaud Pierre Tubes for heat exchanger - limited to cross flow region of shell given additional support by false baffles
DE2608977A1 (en) * 1975-03-04 1976-09-16 Breda Backer Rueb Maschf Heat exchanger for hot corrosive gases - in which thermal stresses are avoided by supplementary cooling elements on shell (NL070976)

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE301142C (en) *
DE845052C (en) * 1942-03-27 1952-07-28 Basf Ag Heat exchanger
GB1154809A (en) * 1966-06-27 1969-06-11 Waagner Biro Ag Improvements relating to Multiple-Tube Heat Exchangers
FR1585849A (en) * 1968-10-21 1970-01-30
FR2183613A1 (en) * 1972-05-12 1973-12-21 Trepaud Pierre Tubes for heat exchanger - limited to cross flow region of shell given additional support by false baffles
DE2608977A1 (en) * 1975-03-04 1976-09-16 Breda Backer Rueb Maschf Heat exchanger for hot corrosive gases - in which thermal stresses are avoided by supplementary cooling elements on shell (NL070976)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997037189A1 (en) * 1996-04-03 1997-10-09 Cabot Corporation Improved heat exchanger
US7328738B2 (en) 1996-04-03 2008-02-12 Cabot Corporation Heat exchanger
US6024960A (en) * 1998-04-17 2000-02-15 Otto Torbjorn Hansen And Marianne Hansen Rose-hip formulations as anti-inflammatory natural medicine for alleviating/reducing symptoms associated with inflammation and arthritis
WO2004113814A1 (en) * 2003-06-24 2004-12-29 Daimlerchrysler Ag Heat exchanger comprising a housing

Also Published As

Publication number Publication date
DE3360632D1 (en) 1985-10-03
FR2521275B1 (en) 1984-06-01
EP0086162B1 (en) 1985-08-28
FR2521275A1 (en) 1983-08-12

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