EP0864834A1 - Heat exchanger with dense fluidized bed combined with a reactor with circulating fluidized bed - Google Patents

Heat exchanger with dense fluidized bed combined with a reactor with circulating fluidized bed Download PDF

Info

Publication number
EP0864834A1
EP0864834A1 EP98400585A EP98400585A EP0864834A1 EP 0864834 A1 EP0864834 A1 EP 0864834A1 EP 98400585 A EP98400585 A EP 98400585A EP 98400585 A EP98400585 A EP 98400585A EP 0864834 A1 EP0864834 A1 EP 0864834A1
Authority
EP
European Patent Office
Prior art keywords
wall
tubes
fluidized bed
heat exchanger
dense fluidized
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
EP98400585A
Other languages
German (de)
French (fr)
Other versions
EP0864834B1 (en
Inventor
Jean Aubry
Djamel Daoud
Alain Quaranta
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.)
Alstom Power Boiler SA
Original Assignee
GEC Alsthom Stein Industrie
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 GEC Alsthom Stein Industrie filed Critical GEC Alsthom Stein Industrie
Publication of EP0864834A1 publication Critical patent/EP0864834A1/en
Application granted granted Critical
Publication of EP0864834B1 publication Critical patent/EP0864834B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0084—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed with recirculation of separated solids or with cooling of the bed particles outside the combustion bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0015—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed for boilers of the water tube type
    • F22B31/0023—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed for boilers of the water tube type with tubes in the bed
    • 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
    • F28D13/00—Heat-exchange apparatus using a fluidised bed

Definitions

  • the present invention relates to a bed heat exchanger dense fluidized intended to be associated with a bed reactor circulating fluidized.
  • a bed heat exchanger dense fluidized comprising a box whose walls vertical longitudinal sections are made up of tubes conveying a heat transfer fluid and divided in the direction of its length in rooms separated from each other by a discharge wall consisting of a wall consisting of tubes carrying a heat transfer fluid.
  • Such an exchanger is generally intended for a combustion plant comprising a bed heat exchanger circulating fluidized comprising a gas outlet opening in a separation cyclone whose solids recovered are treated in this dense fluidized bed before being at less partially reinjected into the bed heat exchanger circulating fluidized.
  • the intermediate chamber is equipped with a box lower fluidizing air supply, nozzles of fluidization air injection arranged on the wall bottom of the chamber and a heat exchanger generally consisting of a plurality of arrangements parallel tubes carrying a heat transfer fluid, by example of steam, arranged transversely to the chamber and hanging from the top wall of the chamber, each arrangement of tubes being connected at the bottom to a inlet manifold for the heat transfer fluid and in the upper part to an outlet manifold of this heated fluid.
  • Such known low walls consist of walls of vertical tubes extending over the entire height of the box and with windows spread across their width at the desired dumping height.
  • This discharge arrangement does not allow passage solids across the full width of the cabinet and windows must be of limited own width taking into account the continuity of the vertical tubes from the bottom of the wall to the top of it, this arrangement does not allow a flow continuous and optimal solids from one room to another.
  • the invention solves this problem by proposing a low wall arrangement made of tubes which can be realized over a given height and therefore allows continuous dumping undisturbed solids above the low wall.
  • said faces vertical longitudinal sections are made up of tubes horizontal and said wall is made up of extensions transverse and superimposed tubes of each of the faces vertical longitudinal, hairpin-shaped, perpendicular to said tubes and extending to the face opposite vertical longitudinal.
  • these extensions are vertically alternated from one side to the other, to allow mechanical stability and balancing of heat transfer fluid flow.
  • the low wall consisting of a double cased wall is internally reinforced with spacers.
  • a tube on two of each vertical wall has such an extension directed towards the other wall and between two such extensions, there is an extension of the other wall which is on the same horizontal plane as the tube of the other wall does not with no extension.
  • the upper part of the wall is shaped as a reducing bevel.
  • Figure 1 is a schematic perspective view of a dense fluidized bed heat exchanger box.
  • FIG. 2 is a detailed perspective view of a exchanger according to the invention.
  • Figure 3 is a partial sectional view along II-II in Figure 2.
  • FIG. 4 is a partial perspective view, partially torn off, from an exchanger conforming to the invention.
  • the vertical longitudinal walls 1A, 1B consist of horizontal tubes 11A, 12A and 11B, 12B.
  • the low wall 10 is made up of extensions transverse and superimposed of tubes 11A, 11B of each of vertical longitudinal walls 1A, 1B, pin-shaped with hair, perpendicular to said tubes and extending to the opposite vertical longitudinal face 1B, 1A.
  • one tube out of two 11A, 11B of each vertical wall 1A, 1B has such a directed extension towards the other wall 1B, 1A. Between two such extensions, there is an extension of the other wall 1B, 1A which located on the same horizontal plane as the tube 12A, 12B of the other wall 1A, 1B having no extension.
  • the upper part of the wall 10 is shaped as a bevel reducing section.
  • the holding of this tube structure is reinforced mechanically by spacers arranged inside the low wall.
  • the upper part of the wall 10 is visible in the figure 3 in cross section.
  • a high spacer 14 is shown in the figure 3. It is a bar welded between the two branches of the hairpin of an extension. Such spacers 14 are distributed over the height of the upper part and over the width of the wall, to obtain mechanical stability desired.
  • spacers distributed over the width of the wall provide mechanical stability as well as connection to the bottom wall of the box.
  • This bottom wall called sole is also consisting of horizontal tubes and, more precisely, a upper wall 15 consisting of tubes connected by horizontal fins.
  • a vertical fin 17 To each tube of this wall and below from this, another tube 16 is connected by a vertical fin 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

The fluidised bed exchanger has a casing (1) whose longitudinal vertical walls (1A,1B) are formed from tubes which transport a fluid. The tubes are divided lengthways into chambers separated from each other by a low wall (10) of liquid circulating tubes. The longitudinal walls comprise horizontal tubes (11A,11B,12A,12B) and the low wall extends from the inner wall of the casing to a height less than that of the casing. This low wall is made up of superposed, transversal extensions of the tubes (11A,11B) for each of the faces of the longitudinal vertical walls, in the form of hair clips, perpendicular to the tubes and extending upto the opposite longitudinal face.

Description

La présente invention concerne un échangeur à lit fluidisé dense destiné à être associé à un réacteur à lit fluidisé circulant.The present invention relates to a bed heat exchanger dense fluidized intended to be associated with a bed reactor circulating fluidized.

Elle concerne plus précisément un échangeur à lit fluidisé dense comportant un caisson dont les parois longitudinales verticales sont constituées de tubes véhiculant un fluide caloporteur et divisé dans le sens de sa longueur en chambres séparées l'une de l'autre par un muret de déversement constitué d'une paroi constituée de tubes véhiculant un fluide caloporteur.It relates more precisely to a bed heat exchanger dense fluidized comprising a box whose walls vertical longitudinal sections are made up of tubes conveying a heat transfer fluid and divided in the direction of its length in rooms separated from each other by a discharge wall consisting of a wall consisting of tubes carrying a heat transfer fluid.

Un tel échangeur est en général destiné à une installation de combustion comprenant un échangeur à lit fluidisé circulant comportant une sortie des gaz débouchant dans un cyclone de séparation dont les solides récupérés sont traités dans ce lit fluidisé dense avant d'être au moins partiellement réinjectés dans l'échangeur à lit fluidisé circulant.Such an exchanger is generally intended for a combustion plant comprising a bed heat exchanger circulating fluidized comprising a gas outlet opening in a separation cyclone whose solids recovered are treated in this dense fluidized bed before being at less partially reinjected into the bed heat exchanger circulating fluidized.

De façon classique, l'échangeur à lit fluidisé dense comporte dans un caisson un certain nombre de chambres:

  • une chambre de réception des solides dans laquelle sont introduits des solides par un orifice,
  • au moins une chambre intermédiaire dans laquelle se déversent les solides après leur passage au-dessus d'un premier muret,
  • une chambre de sortie des solides recevant les solides après leur passage au-dessus d'un second muret et comportant un orifice d'évacuation des solides.
Conventionally, the dense fluidized bed exchanger has a number of chambers in a box:
  • a solid receiving chamber into which solids are introduced through an orifice,
  • at least one intermediate chamber into which the solids are discharged after their passage over a first wall,
  • a solids outlet chamber receiving the solids after their passage over a second low wall and comprising a solids evacuation orifice.

La chambre intermédiaire est équipée d'une boíte inférieure d'alimentation en air de fluidisation, de buses d'injection d'air de fluidisation disposées sur la paroi inférieure de la chambre et d'un échangeur de chaleur constitué en général d'une pluralité d'agencements parallèles de tubes véhiculant un fluide caloporteur, par exemple de la vapeur, disposés transversalement à la chambre et suspendus à la paroi supérieure de la chambre, chaque agencement de tubes étant relié en partie basse à un collecteur d'entrée du fluide caloporteur et en partie haute à un collecteur de sortie de ce fluide chauffé.The intermediate chamber is equipped with a box lower fluidizing air supply, nozzles of fluidization air injection arranged on the wall bottom of the chamber and a heat exchanger generally consisting of a plurality of arrangements parallel tubes carrying a heat transfer fluid, by example of steam, arranged transversely to the chamber and hanging from the top wall of the chamber, each arrangement of tubes being connected at the bottom to a inlet manifold for the heat transfer fluid and in the upper part to an outlet manifold of this heated fluid.

Dans cette chambre a donc lieu la fluidisation dense des solides et une récupération de chaleur par l'échangeur.In this chamber therefore takes place the dense fluidization solids and heat recovery by the exchanger.

Il est connu de réaliser les parois longitudinales du caisson et les murets de déversement au moyen de tubes véhiculant un fluide caloporteur afin d'augmenter l'échange thermique, la récupération de chaleur et donc le rendement de l'installation.It is known to produce the longitudinal walls of the casing and low walls by means of tubes conveying a heat transfer fluid in order to increase the exchange thermal, heat recovery and therefore efficiency of the installation.

De tels murets connus sont constitués de parois de tubes verticaux s'étendant sur toute la hauteur du caisson et comportant des fenêtres réparties sur leur largeur à la hauteur de déversement désirée.Such known low walls consist of walls of vertical tubes extending over the entire height of the box and with windows spread across their width at the desired dumping height.

Cet agencement de déversement ne permet pas le passage des solides sur toute la largeur du caisson et, les fenêtres devant être de largeur propre limitée compte-tenu de la continuité des tubes verticaux du bas du muret jusqu'au haut de celui-ci, cet agencement ne permet pas un écoulement continu et optimal des solides d'une chambre à l'autre.This discharge arrangement does not allow passage solids across the full width of the cabinet and windows must be of limited own width taking into account the continuity of the vertical tubes from the bottom of the wall to the top of it, this arrangement does not allow a flow continuous and optimal solids from one room to another.

L'invention résout ce problème en proposant un agencement de muret constitué de tubes qui peut être réalisé sur une hauteur donnée et permet donc un déversement continu et non perturbé des solides au-dessus du muret.The invention solves this problem by proposing a low wall arrangement made of tubes which can be realized over a given height and therefore allows continuous dumping undisturbed solids above the low wall.

Pour ce faire, selon l'invention, lesdites faces longitudinales verticales sont constituées de tubes horizontaux et ladite paroi est constituée de prolongements transversaux et superposés de tubes de chacune des faces longitudinales verticales, en forme d'épingle à cheveux, perpendiculaires auxdits tubes et s'étendant jusqu'à la face longitudinale verticale opposée.To do this, according to the invention, said faces vertical longitudinal sections are made up of tubes horizontal and said wall is made up of extensions transverse and superimposed tubes of each of the faces vertical longitudinal, hairpin-shaped, perpendicular to said tubes and extending to the face opposite vertical longitudinal.

Il est ainsi possible de réaliser un muret de hauteur voulue.It is thus possible to make a low wall wanted.

Selon le mode de réalisation préféré, ces prolongements sont verticalement alternés d'une face à l'autre, afin de permettre une stabilité mécanique et un équilibrage de débit du fluide caloporteur.According to the preferred embodiment, these extensions are vertically alternated from one side to the other, to allow mechanical stability and balancing of heat transfer fluid flow.

Afin de réaliser la tenue hydrostatique, de préférence, le muret constitué d'une double paroi tubée est renforcé intérieurement d'entretoises.In order to achieve hydrostatic resistance, preferably, the low wall consisting of a double cased wall is internally reinforced with spacers.

Selon un mode de construction préféré, un tube sur deux de chaque paroi verticale comporte un tel prolongement dirigé vers l'autre paroi et entre deux tels prolongements, s'intercale un prolongement de l'autre paroi qui se trouve sur le même plan horizontal que le tube de l'autre paroi ne comportant pas de prolongement.According to a preferred construction method, a tube on two of each vertical wall has such an extension directed towards the other wall and between two such extensions, there is an extension of the other wall which is on the same horizontal plane as the tube of the other wall does not with no extension.

Avantageusement, la partie haute du muret est conformée en biseau de section se réduisant.Advantageously, the upper part of the wall is shaped as a reducing bevel.

L'invention est décrite ci-après plus en détail à l'aide de figures ne représentant qu'un mode de réalisation préféré de l'invention.The invention is described below in more detail at using figures representing only one embodiment preferred of the invention.

La figure 1 est une vue schématique en perspective d'un caisson d'échangeur à lit fluidisé dense.Figure 1 is a schematic perspective view of a dense fluidized bed heat exchanger box.

La figure 2 est une vue en perspective de détail d'un échangeur conforme à l'invention.Figure 2 is a detailed perspective view of a exchanger according to the invention.

La figure 3 est une vue en coupe partielle selon II-II de la figure 2.Figure 3 is a partial sectional view along II-II in Figure 2.

La figure 4 est une vue partielle en perspective, partiellement arrachée, d'un échangeur conforme à l'invention.FIG. 4 is a partial perspective view, partially torn off, from an exchanger conforming to the invention.

De façon classique, un échangeur à lit fluidisé dense schématisé sur la figure 1 comporte dans un caisson 1 un certain nombre de chambres:

  • une chambre de réception 2 des solides dans laquelle sont introduits des solides par un orifice 3,
  • au moins une chambre 4, 5 dans laquelle se déversent les solides après leur passage au-dessus d'un premier muret 10A et séparées l'une de l'autre par un muret du même type 10B,
  • une chambre de sortie 6 des solides recevant les solides après leur passage au-dessus d'un autre muret 10C et comportant un orifice 7 d'évacuation des solides.
Conventionally, a dense fluidized bed exchanger shown diagrammatically in FIG. 1 has in a box 1 a certain number of chambers:
  • a receiving chamber 2 for solids into which solids are introduced through an orifice 3,
  • at least one chamber 4, 5 into which the solids are discharged after their passage over a first low wall 10A and separated from each other by a low wall of the same type 10B,
  • an outlet chamber 6 for the solids receiving the solids after they have passed over another low wall 10C and comprising an orifice 7 for discharging the solids.

Comme visible sur la figure 2, selon l'invention, les parois longitudinales verticales 1A, 1B sont constituées de tubes horizontaux 11A, 12A et 11B, 12B.As can be seen in FIG. 2, according to the invention, the vertical longitudinal walls 1A, 1B consist of horizontal tubes 11A, 12A and 11B, 12B.

Le muret 10 est constituée de prolongements transversaux et superposés de tubes 11A, 11B de chacune des parois longitudinales verticales 1A, 1B, en forme d'épingle à cheveux, perpendiculaires auxdits tubes et s'étendant jusqu'à la face longitudinale verticale opposée 1B, 1A.The low wall 10 is made up of extensions transverse and superimposed of tubes 11A, 11B of each of vertical longitudinal walls 1A, 1B, pin-shaped with hair, perpendicular to said tubes and extending to the opposite vertical longitudinal face 1B, 1A.

Plus précisément, un tube sur deux 11A, 11B de chaque paroi verticale 1A, 1B comporte un tel prolongement dirigé vers l'autre paroi 1B, 1A. Entre deux tels prolongements, s'intercale un prolongement de l'autre paroi 1B, 1A qui se trouve sur le même plan horizontal que le tube 12A, 12B de l'autre paroi 1A, 1B ne comportant pas de prolongement.More precisely, one tube out of two 11A, 11B of each vertical wall 1A, 1B has such a directed extension towards the other wall 1B, 1A. Between two such extensions, there is an extension of the other wall 1B, 1A which located on the same horizontal plane as the tube 12A, 12B of the other wall 1A, 1B having no extension.

La partie haute du muret 10 est conformée en biseau de section se réduisant.The upper part of the wall 10 is shaped as a bevel reducing section.

Il est ainsi réalisé un pas constant entre tubes, que ce soit sur les parois verticales ou sur le muret et ceci sans intersection de tubes.There is thus achieved a constant pitch between tubes, that either on the vertical walls or on the wall and this without intersection of tubes.

De façon classique, des ailettes métalliques ferment les parois de tubes ainsi formées reliant tous les tubes adjacents et le muret est recouvert extérieurement d'une couche de béton 13 (figures 3).Conventionally, metal fins close the tube walls thus formed connecting all the tubes adjacent and the low wall is covered externally with a concrete layer 13 (Figures 3).

La tenue de cette structure de tubes est renforcée mécaniquement par des entretoises disposées à l'intérieur du muret.The holding of this tube structure is reinforced mechanically by spacers arranged inside the low wall.

La partie haute du muret 10 est visible sur la figure 3 en coupe transversale.The upper part of the wall 10 is visible in the figure 3 in cross section.

Une entretoise haute 14 est représentée sur la figure 3. Il s'agit d'une barre soudée entre les deux branches de l'épingle à cheveux d'un prolongement. De telles entretoises 14 sont réparties sur la hauteur de la partie haute et sur la largeur du muret, pour obtenir la stabilité mécanique souhaitée.A high spacer 14 is shown in the figure 3. It is a bar welded between the two branches of the hairpin of an extension. Such spacers 14 are distributed over the height of the upper part and over the width of the wall, to obtain mechanical stability desired.

En partie basse du muret 10, comme visible sur la figure 4, des entretoises réparties sur la largeur du muret assurent la stabilité mécanique ainsi que la liaison à la paroi inférieure du caisson.In the lower part of low wall 10, as visible on the Figure 4, spacers distributed over the width of the wall provide mechanical stability as well as connection to the bottom wall of the box.

Cette paroi inférieure appelée sole est également constituée de tubes horizontaux et, plus précisément, d'une paroi supérieure 15 constituée de tubes reliés par des ailettes horizontales. A chaque tube de cette paroi et au-dessous de celui-ci, est relié un autre tube 16 par une ailette verticale 17. Deux tirants 18 disposés au droit du muret et longitudinalement à celui-ci, sont soudés à la sole, traversant les ailettes verticales 17. Reliées à ces tirants 18, sont mises en place des entretoises 19 d'une hauteur maximale égale à la hauteur de la partie de section constante du muret et constituées d'une plaque ou équivalent comportant latéralement des échancrures recevant les tubes des prolongements.This bottom wall called sole is also consisting of horizontal tubes and, more precisely, a upper wall 15 consisting of tubes connected by horizontal fins. To each tube of this wall and below from this, another tube 16 is connected by a vertical fin 17. Two tie rods 18 arranged in line with the wall and longitudinally to it, are welded to the sole, crossing the vertical fins 17. Connected to these tie rods 18, are placed spacers 19 of a maximum height equal to the height of the section part constant of the wall and consist of a plate or equivalent having laterally notches receiving the tubes extensions.

Claims (5)

Echangeur à lit fluidisé dense comportant un caisson (1) dont les parois longitudinales verticales (1A, 1B) sont constituées de tubes véhiculant un fluide caloporteur et divisé dans le sens de sa longueur en chambres séparées l'une de l'autre par un muret de déversement (10) constitué d'une paroi constituée de tubes véhiculant un fluide caloporteur, caractérisé en ce que lesdites parois longitudinales verticales (1A, 1B) sont constituées de tubes horizontaux (11A, 11B, 12A, 12B) et ledit muret s'étend à partir de la paroi inférieure du caisson (1) sur une hauteur inférieur à celle de celui-ci et est constituée de prolongements transversaux et superposés de tubes (11A, 11B) de chacune des faces longitudinales verticales (1A, 1B), en forme d'épingle à cheveux, perpendiculaires auxdits tubes et s'étendant jusqu'à la face longitudinale verticale opposée (1B, 1A).Dense fluidized bed heat exchanger comprising a box (1) whose vertical longitudinal walls (1A, 1B) consist of tubes carrying a fluid coolant and divided lengthwise into rooms separated from each other by a low wall spill (10) consisting of a wall consisting of tubes conveying a heat transfer fluid, characterized in that said vertical longitudinal walls (1A, 1B) are made of horizontal tubes (11A, 11B, 12A, 12B) and said low wall extends from the bottom wall of the box (1) at a height less than that of the latter and consists of transverse and overlapping extensions tubes (11A, 11B) on each of the longitudinal faces vertical (1A, 1B), in the form of a hairpin, perpendicular to said tubes and extending to the face opposite vertical longitudinal (1B, 1A). Echangeur à lit fluidisé dense selon la revendication 1, caractérisé en ce que ces prolongements sont verticalement alternés d'une face à l'autre.Dense fluidized bed heat exchanger according to claim 1, characterized in that these extensions are vertically alternated from one face to the other. Echangeur à lit fluidisé dense selon l'une des revendications précédentes, caractérisé en ce que le muret constitué d'une double paroi tubée est renforcé intérieurement d'entretoises (14, 19).Dense fluidized bed heat exchanger according to one of the previous claims, characterized in that the low wall consisting of a double cased wall is reinforced internally spacers (14, 19). Echangeur à lit fluidisé dense selon la revendication 2, caractérisé en ce qu'un tube sur deux (11A, 11B) de chaque paroi verticale (1A, 1B) comporte un tel prolongement dirigé vers l'autre paroi (1B, 1A) et en ce qu'entre deux tels prolongements, s'intercale un prolongement de l'autre paroi (1B, 1A) qui se trouve sur le même plan horizontal que le tube (12A, 12B) de l'autre paroi (1A, 1B) ne comportant pas de prolongement. Dense fluidized bed heat exchanger according to claim 2, characterized in that every other tube (11A, 11B) of each vertical wall (1A, 1B) has such a extension directed towards the other wall (1B, 1A) and in this that between two such extensions, one extension of the other wall (1B, 1A) which is on the same horizontal plane as the tube (12A, 12B) on the other wall (1A, 1B) with no extension. Echangeur selon l'une des revendications précédentes, caractérisé en ce que la partie haute du muret est conformée en biseau de section se réduisant.Exchanger according to one of claims previous, characterized in that the upper part of the wall is shaped as a reducing bevel.
EP98400585A 1997-03-13 1998-03-12 Heat exchanger with dense fluidized bed combined with a reactor with circulating fluidized bed Expired - Lifetime EP0864834B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9702991A FR2760829B1 (en) 1997-03-13 1997-03-13 DENSE FLUIDIZED BED EXCHANGER FOR ASSOCIATED WITH A CIRCULATING FLUIDIZED BED REACTOR
FR9702991 1997-03-13

Publications (2)

Publication Number Publication Date
EP0864834A1 true EP0864834A1 (en) 1998-09-16
EP0864834B1 EP0864834B1 (en) 2009-06-17

Family

ID=9504700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98400585A Expired - Lifetime EP0864834B1 (en) 1997-03-13 1998-03-12 Heat exchanger with dense fluidized bed combined with a reactor with circulating fluidized bed

Country Status (9)

Country Link
US (1) US5979367A (en)
EP (1) EP0864834B1 (en)
JP (1) JPH10318686A (en)
CN (1) CN1100600C (en)
AT (1) ATE434164T1 (en)
CA (1) CA2230098A1 (en)
DE (1) DE69840901D1 (en)
FR (1) FR2760829B1 (en)
ZA (1) ZA982102B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1875130B1 (en) * 2005-04-26 2016-08-31 General Electric Technology GmbH Double wall extension

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101922874B (en) * 2010-06-22 2012-07-18 四川金象赛瑞化工股份有限公司 Combined-type heat exchanger and fluidized bed reactor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893426A (en) * 1974-03-25 1975-07-08 Foster Wheeler Corp Heat exchanger utilizing adjoining fluidized beds
US4173950A (en) * 1978-07-03 1979-11-13 Combustion Engineering, Inc. Coal fired fluid bed module for a single elevation style fluid bed power plant
EP0477849A1 (en) * 1990-09-26 1992-04-01 STEIN INDUSTRIE Société Anonyme dite: Cooling arrangement for a wall in the medial region of a fluidised bed boiler
DE4135582A1 (en) * 1991-10-29 1993-05-06 Metallgesellschaft Ag, 6000 Frankfurt, De Fluid bed cooler for a system for the thermal treatment of granular solids in the fluidized bed

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893426A (en) * 1974-03-25 1975-07-08 Foster Wheeler Corp Heat exchanger utilizing adjoining fluidized beds
US4173950A (en) * 1978-07-03 1979-11-13 Combustion Engineering, Inc. Coal fired fluid bed module for a single elevation style fluid bed power plant
EP0477849A1 (en) * 1990-09-26 1992-04-01 STEIN INDUSTRIE Société Anonyme dite: Cooling arrangement for a wall in the medial region of a fluidised bed boiler
DE4135582A1 (en) * 1991-10-29 1993-05-06 Metallgesellschaft Ag, 6000 Frankfurt, De Fluid bed cooler for a system for the thermal treatment of granular solids in the fluidized bed

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1875130B1 (en) * 2005-04-26 2016-08-31 General Electric Technology GmbH Double wall extension

Also Published As

Publication number Publication date
ZA982102B (en) 1998-10-21
ATE434164T1 (en) 2009-07-15
US5979367A (en) 1999-11-09
EP0864834B1 (en) 2009-06-17
DE69840901D1 (en) 2009-07-30
CA2230098A1 (en) 1998-09-13
CN1197689A (en) 1998-11-04
FR2760829B1 (en) 1999-05-14
CN1100600C (en) 2003-02-05
FR2760829A1 (en) 1998-09-18
JPH10318686A (en) 1998-12-04

Similar Documents

Publication Publication Date Title
EP0019508B1 (en) Thermal-exchange assembly of the plate heat exchanger type
EP0787946B1 (en) External fluidized bed for equipping a circulating fluidized bed furnace
EP0864834B1 (en) Heat exchanger with dense fluidized bed combined with a reactor with circulating fluidized bed
EP1088578A1 (en) Vaporizer-condenser with thermosiphon and corresponding air distillation plant
FR2571837A1 (en) FLUID HEATING APPARATUS
EP0477849B1 (en) Cooling arrangement for a wall in the medial region of a fluidised bed boiler
EP0694749B1 (en) Solid particle cooling device at the outlet of a treatment arrangement
EP0553340B1 (en) Plate-type heat exchanger
EP0867680B1 (en) Space saving heat exchanger
EP0171340A1 (en) Condensing hot water generator
FR2532404A1 (en) Fluidised bed combustion chamber bottom
FR2752926A1 (en) Fluid heat exchanger
CN108266713A (en) A kind of high spliced boiler group of energy utilization rate
FR2475187A1 (en) SMOKE DUCT BOILER AND PIPE FOR SUCH A BOILER
EP0885946B1 (en) Apparatus and process for the management of gaseous streams in a distillation plant
FR2735566A1 (en) ARRANGEMENT FOR HOLDING A TUBE BEAM IN PARTICULAR FOR FORMING A HEAT EXCHANGER
EP0728508A1 (en) Crystallizer
FR2495753A1 (en) HEAT EXCHANGER, AND APPARATUS COMPRISING SUCH AN EXCHANGER
EP0180497A1 (en) Fluidized-bed apparatus with heat exchanger and with a complementary-air aspiration network
BE399601A (en)
CH271216A (en) Steam boiler.
FR2694388A1 (en) Heat exchanger with a water tube layer, especially for a condensing boiler.
RU5845U1 (en) SECTIONAL WATER BOILER
BE487579A (en)
CH587442A5 (en) High capacity water superheater - has headers joined by tubes forming combustion chamber wall and convection section

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI GB GR IE IT LI LU NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

AKX Designation fees paid

Free format text: AT BE CH DE DK ES FI GB GR IE IT LI LU NL PT SE

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH DE DK ES FI GB GR IE IT LI LU NL PT SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALSTOM ENERGY SYSTEMS S.A.

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALSTOM POWER BOILERS

17P Request for examination filed

Effective date: 19990531

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FI GB GR IE IT LI LU NL PT SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REF Corresponds to:

Ref document number: 69840901

Country of ref document: DE

Date of ref document: 20090730

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090617

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090917

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090617

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090928

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090617

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20091017

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090617

26N No opposition filed

Effective date: 20100318

BERE Be: lapsed

Owner name: ALSTOM POWER BOILERS

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090918

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100312

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100331

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101001

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100331

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090617

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100312

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100312

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20170329

Year of fee payment: 20