EP0091353A1 - Method and apparatus for increasing and realizing heat exchanges on a pulverulent material having a large granulometric distribution - Google Patents

Method and apparatus for increasing and realizing heat exchanges on a pulverulent material having a large granulometric distribution Download PDF

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Publication number
EP0091353A1
EP0091353A1 EP83400637A EP83400637A EP0091353A1 EP 0091353 A1 EP0091353 A1 EP 0091353A1 EP 83400637 A EP83400637 A EP 83400637A EP 83400637 A EP83400637 A EP 83400637A EP 0091353 A1 EP0091353 A1 EP 0091353A1
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EP
European Patent Office
Prior art keywords
tube
fluidization
base
column
pulverulent material
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Granted
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EP83400637A
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German (de)
French (fr)
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EP0091353B1 (en
Inventor
Frédéric Berckmoes
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Krebs & Co Sa SA
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Krebs & Co Sa SA
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Priority to AT83400637T priority Critical patent/ATE14924T1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/10—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material
    • F28C3/12—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid
    • F28C3/16—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid the particulate material forming a bed, e.g. fluidised, on vibratory sieves

Definitions

  • the present invention aims to overcome this difficulty and intends to provide a solution to the problem of upward vertical transport and of a concomitant heat exchange of a pulverulent material having a spread distribution of its particle size.
  • heat exchange is meant either reheating or, preferably, cooling of the material with essentially the outside.
  • the method according to the invention is characterized in that one carries out, in the same enclosure, a fluidization of the pulverulent material; this fluidization being ensured to a certain degree and flight of the part corresponding to said degree of said pulverulent material and a pneumatic drive of the remaining particles from the lower part of the fluidized bed.
  • the desired heat exchanges are carried out, on the one hand, on the fluidized bed and, on the other hand, on the pneumatic drive.
  • the fluidization of the pulverulent material up to a certain degree in order to ensure the flight of the particles located inside said degree.
  • up to a certain degree it is meant that one will predetermine the proportion of the pulverulent material introduced into the enclosure which will be fluidized and this according to the dimensions of the particles of said pulverulent material.
  • the pulverulent material used has a Gaussian particle size distribution with particles of average dimensions of the order of 0.1 mm and particles of average dimensions of the order of 4 mm, it will be decided to carry out the fluidization of all the particles of said material which will have average dimensions of less than 2 mm, and an enclosure and a suitable fluidizing gas flow rate will be used for this.
  • said fluidization ensures the flight of said particles.
  • a pneumatic drive device for these large particles is produced from this lower part.
  • This pneumatic drive consists of an open tube into which, thanks to a suitable nozzle, a quantity of air is introduced sufficient to entrain said large particles.
  • This tube preferably crosses the fluidized bed and emerges from it.
  • the present invention also relates to the devices which can be used for implementing the invention; it more particularly relates to an elevation and cooling device of a powdery material with a large particle size distribution.
  • This device consists of a column provided at its base with a fluidization grid, under which is provided a wind box, an inlet for the material above said grid and a central tube whose base is located. at a certain adjustable distance from an air injection nozzle towards the tube.
  • the aforementioned column communicates at its upper part with a product collector, while the central tube opens into an auxiliary sensor and retarder itself connected to said collector.
  • the aforesaid nozzle is guided relative to the aforementioned fluidizing grid and constitutes a means of adjusting the distance separating it from the base of the central tube.
  • FIG. 1 there is seen a column 1 at the base of which a perforated plate 2 separates the interior volume la from the column of a wind box 3 connected to a source of compressed gas not shown .
  • This perforated plate constitutes a fluidization grid above which, by a conduit 4, the divided product to be raised and cooled is brought.
  • the upper part of column 1 is in communication so not shown with a manifold 5 located at the desired altitude.
  • This collector can be of the cyclone or other known type.
  • a transfer tube 6 In the center of column 1, a transfer tube 6 has been placed, the base 6a of which communicates with the internal space la of the column. This base 6a is located at a distance d from a nozzle 7 for injecting an air stream into the tube.
  • the upper end 6b of the tube 6 opens into an auxiliary sensor 8 which also acts as a retarder and which is itself connected to the main manifold 5.
  • the representation of the nozzle 7 is entirely schematic. It should be easily accessible to adjust said distance d but also its diameter and its location relative to the grid 2. It may also be advantageous for the tube 6 to be movable if one wishes to modify in another way the above distance.
  • annular pipe 9 can be seen, the lower part of which is provided with orifices for spraying a liquid (water) for cooling the wall of the column 1, this water being collected by an annular tank 10 of drainage. There is symbolized at 11 a cooling device separate from the tube 6.
  • Figure 2 which is a detailed view of an embodiment of Figure 1, at the fluidization grid and the tube 6, there are some of the elements already described with the same references.
  • the nozzle 7 is axially aligned with the tube 6 (guides 12 make it possible to keep this alignment). It places the wind box 3 in direct communication with the interior of the column.
  • the pressure drop of the nozzle is much lower than that of the grid 2, there is a flow of air or gas which reaches the base 6a of the tube 6 by creating an aspiration of the ambient atmosphere around the elements 6 and 7.
  • the distance d separating the end of the nozzle from the end of the tube 6, the suction effect and therefore the role of the tube 6 are adjusted.
  • the nozzle 7 can also be supplied by a source of compressed air independent of the wind boot.
  • the product brought to the grid 2 being of a particle size distributed over a wide range (in particular according to a distribution of gauss), the pressure of the wind box is adjusted so that the main part of the grains is transported pneumatically in column 6 according to a speed determined by the cooling rate that is desired.
  • the heaviest particles tend to remain in the space la, or even to concentrate at the level of the grid 2.
  • the suction effect described above creates a sweeping of this space of sufficient force to cause these heavy particles which are rapidly propelled into the auxiliary sensor 8.
  • the transfer is carried out to the detriment of the cooling, which can then be compensated, if necessary, by more vigorous cooling at 11 or by lengthening the length of the transfer channels.
  • the calorific incidence can be neglected.
  • the invention finds an interesting application in the field of treatment of finely divided materials.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Coke Industry (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

1. Device for lifting and cooling a finely divided material whose granulometry spreads over a wide range, characterized in that it is constituted by a column (1) provided at its base with a fluidization grate (2), under which is provided an air-chamber (3) whose upper part communicates with a collector (5) for the material, with admission means (4) for the material placed above said grate (2) and with a central transfer tube (6) whose base (6a) is situated at an adjustable distance (d) from a gas injecting nozzle (7) directed towards the tube, said central tube emerging into an auxiliary collecting and speed reducing chamber (8) itself being connected to said collector (5).

Description

On a déjà préconisé de réaliser simultanément le transport vertical et des échanges thermiques sur un matériau pulvérulent en utilisant la technique du lit fluidisé. Mais, pour que les deux opérations puissent être simultanément effectuées avec une grande efficacité en employant ladite technique, il convient de n'avoir à manipuler qu'un matériau pulvérulent présentant une granulométrie à plage de distribution étroite. Dès que le matériau pulvérulent possède une granulométrie large, la technique du lit fluidisé présente des difficultés à la fois quant aux possibilités de transport du matériau et quant à la réalisation d'échanges thermiques convenables pour l'ensemble du matériau.It has already been recommended to carry out vertical transport and heat exchanges simultaneously on a pulverulent material using the fluidized bed technique. However, so that the two operations can be carried out simultaneously with great efficiency using the said technique, it is advisable to have to handle only a pulverulent material having a particle size with a narrow distribution range. As soon as the pulverulent material has a wide particle size, the fluidized bed technique presents difficulties both as regards the possibilities of transporting the material and as regards the achievement of suitable heat exchanges for the whole of the material.

La présente invention vise à surmonter cette difficulté et entend fournir une solution au problème du transport vertical ascendant et d'un échange thermique concomitant d'un matériau pulvérulent présentant une distribution étalée de sa granulométrie.The present invention aims to overcome this difficulty and intends to provide a solution to the problem of upward vertical transport and of a concomitant heat exchange of a pulverulent material having a spread distribution of its particle size.

Par distribution étalée de la granulométrie, on entend une distribution plus large que celle qui serait admissible pour l'utilisation pure et simple de la technique du lit fluidisé.By spread distribution of the particle size means a wider distribution than that which would be admissible for the pure and simple use of the fluidized bed technique.

Par échange thermique, on entend soit le réchauffage, soit, de préférence, le refroidissement du matériau avec essentiellement l'extérieur.By heat exchange is meant either reheating or, preferably, cooling of the material with essentially the outside.

Le procédé selon l'invention est caractérisé en ce que l'on réalise, dans une même enceinte, une fluidisation du matériau pulvérulent; cette fluidisation étant assurée jusqu'à un certain degré et envol de la partie correspondant audit degré dudit matériau pulvérulent et un entraînement pneumatique des particules restantes à partir de la partie basse du lit fluidisé. Bien évidemment, les échanges thermiques recherchés sont réalisés, d'une part, sur le lit fluidisé et, d'autre part, sur l'entraînement pneumatique.The method according to the invention is characterized in that one carries out, in the same enclosure, a fluidization of the pulverulent material; this fluidization being ensured to a certain degree and flight of the part corresponding to said degree of said pulverulent material and a pneumatic drive of the remaining particles from the lower part of the fluidized bed. Obviously, the desired heat exchanges are carried out, on the one hand, on the fluidized bed and, on the other hand, on the pneumatic drive.

Il convient donc tout d'abord de réaliser la fluidisation du matériau pulvérulent jusqu'à un certain degré afin d'assurer l'envol des particules situées à l'intérieur dudit degré. Par jusqu'à un certain degré, on entend que l'on prédéterminera la proportion du matériau pulvérulent introduit dans l'enceinte qui sera fluidisé et ceci en fonction des dimensions des particules dudit matériau pulvérulent. Ainsi, par exemple, si le matériau pulvérulent utilisé a une répartition granulométrique gaussienne avec des particules de dimensions moyennes de l'ordre de 0,1 mm et des particules de dimensions moyennes de l'ordre de 4 mm, on décidera de réaliser la fluidisation de toutes les particules dudit matériau qui auront des dimensions moyennes inférieures à 2 mm et on utilisera pour cela une enceinte et un débit de gaz fluidisant convenable. De plus, il faut que ladite fluidisation assure l'envol desdites particules.It is therefore first of all necessary to carry out the fluidization of the pulverulent material up to a certain degree in order to ensure the flight of the particles located inside said degree. By up to a certain degree, it is meant that one will predetermine the proportion of the pulverulent material introduced into the enclosure which will be fluidized and this according to the dimensions of the particles of said pulverulent material. Thus, for example, if the pulverulent material used has a Gaussian particle size distribution with particles of average dimensions of the order of 0.1 mm and particles of average dimensions of the order of 4 mm, it will be decided to carry out the fluidization of all the particles of said material which will have average dimensions of less than 2 mm, and an enclosure and a suitable fluidizing gas flow rate will be used for this. In addition, it is necessary that said fluidization ensures the flight of said particles.

Lorsque l'on réalise une fluidisation de ce type, il se trouve que les plus grosses particules (celles dont les dimensions moyennes sont comprises entre environ 2 et 4 mm dans l'exemple ci-dessus) restent dans l'enceinte et très généralement se déplacent dans la partie basse du lit fluidisé. Selon l'invention, on réalise à partir de cette partie basse un dispositif d'entraînement pneumatique de ces grosses particules. Cet entraînement pneumatique est constitué d'un tube ouvert dans lequel, grâce à un ajutage convenable, on introduit une quantité d'air suffisante pour entraîner lesdites grosses particules. Ce tube traverse de préférence le lit fluidisé et débouche hors de celui-ci.When carrying out a fluidization of this type, it turns out that the largest particles (those whose average dimensions are between about 2 and 4 mm in the example above) remain in the enclosure and very generally move in the lower part of the fluidized bed. According to the invention, a pneumatic drive device for these large particles is produced from this lower part. This pneumatic drive consists of an open tube into which, thanks to a suitable nozzle, a quantity of air is introduced sufficient to entrain said large particles. This tube preferably crosses the fluidized bed and emerges from it.

En ce qui concerne les échanges thermiques que l'on réalise sur les particules, il va de soi que ces échanges sont effectués, d'une part, au niveau du lit fluidisé pour toutes les particules situées dans ce lit (et tous les moyens connus et utilisables pour réaliser des échanges thermiques sur les lits fluidisés peuvent être mis en oeuvre) et, d'autre part, au niveau du dispositif d'entraînement pneumatique, dans la partie dudit dispositif située hors du lit fluidisé, pour les particules entraînées par le dispositif pneumatique. Cette possibilité de réaliser les échanges thermiques à deux niveaux est intéressante car lesdits échanges peuvent être spécialement adaptés en tenant compte des dimensions des particules qui doivent subir ces échanges.With regard to the heat exchanges that are carried out on the particles, it goes without saying that these exchanges are carried out, on the one hand, at the level of the fluidized bed for all the particles located in this bed (and all known means and usable for carrying out heat exchanges on the fluidized beds can be implemented) and, on the other hand, at the level of the pneumatic drive device, in the part of said device located outside the fluidized bed, for the particles entrained by the pneumatic device. This possibility of carrying out heat exchanges at two levels is advantageous because said exchanges can be specially adapted taking into account the dimensions of the particles which must undergo these exchanges.

La présente invention concerne également les dispositifs utilisables pour la mise en oeuvre de l'invention; elle a plus particulièrement pour objet un dispositif d'élévation et de refroidissement d'un matériau pulvérulent à large répartition granulométrique. Ce dispositif est constitué par une colonne pourvue à sa base d'une grille de fluidisation, sous laquelle est ménagée une boîte à vent, d'une arrivée du matériau au-dessus de ladite grille et d'un tube central dont la base est située à une certaine distance réglable d'une buse d'injection d'air en direction du tube.The present invention also relates to the devices which can be used for implementing the invention; it more particularly relates to an elevation and cooling device of a powdery material with a large particle size distribution. This device consists of a column provided at its base with a fluidization grid, under which is provided a wind box, an inlet for the material above said grid and a central tube whose base is located. at a certain adjustable distance from an air injection nozzle towards the tube.

En outre, la colonne susdite communique à sa partie supérieure avec un collecteur du produit, tandis que le tube central débouche dans un capteur et ralentisseur auxiliaire lui-même connecté audit collecteur. De manière préférée, la buse susdite est guidée par rapport à la grille de fluidisation susdite de manière libre et constitue un moyen de réglage de la distance la séparant de la base du tube central.In addition, the aforementioned column communicates at its upper part with a product collector, while the central tube opens into an auxiliary sensor and retarder itself connected to said collector. Preferably, the aforesaid nozzle is guided relative to the aforementioned fluidizing grid and constitutes a means of adjusting the distance separating it from the base of the central tube.

On notera :

  • - d'une part, que l'arrivée du matériau dans la colonne doit être convenablement positionnée et éventuellement aménagée pour que les particules soient soumises au flux gazeux de fluidisation avant d'atteindre le tube central d'entraînement pneumatique,
  • - d'autre part, que la paroi extérieure de la colonne est équipée d'un système de refroidissement qui peut être par pulvérisation d'eau, tandis que le tube central peut également être équipé d'un système de refroidissement séparé.
We will note :
  • on the one hand, that the arrival of the material in the column must be suitably positioned and possibly arranged so that the particles are subjected to the gaseous fluidization flow before reaching the central pneumatic drive tube,
  • - on the other hand, that the outer wall of the column is equipped with a cooling system which can be by spraying with water, while the central tube can also be equipped with a separate cooling system.

L'invention sera mieux comprise au cours de la description donnée ci-après à titre d'exemple purement indicatif et non limitatif qui permettra d'en dégager les avantages et les caractéristiques secondaires.The invention will be better understood during the description given below by way of purely indicative and nonlimiting example which will make it possible to identify the advantages and the secondary characteristics thereof.

Il sera fait référence aux dessins annexés, dans lesquels :

  • - la figure 1 est un schéma de principe de l'invention;
  • - la figure 2 est une vue de détail de la figure 1.
Reference will be made to the accompanying drawings, in which:
  • - Figure 1 is a block diagram of the invention;
  • - Figure 2 is a detail view of Figure 1.

En se reportant tout d'abord à la figure 1, on voit une colonne 1 à la base de laquelle une plaque perforée 2 sépare le volume intérieur la de la colonne d'une boîte à vent 3 connectée à une source de gaz comprimé non représentée. Cette plaque perforée constitue une grille de fluidisation au-dessus de laquelle, par un conduit 4, le produit divisé à élever et refroidir est amené. La partie supérieure de la colonne 1 est en communication de manière non représentée avec un collecteur 5 situé à l'altitude désirée. Ce collecteur peut être du type cyclone ou autre connu.Referring first to Figure 1, there is seen a column 1 at the base of which a perforated plate 2 separates the interior volume la from the column of a wind box 3 connected to a source of compressed gas not shown . This perforated plate constitutes a fluidization grid above which, by a conduit 4, the divided product to be raised and cooled is brought. The upper part of column 1 is in communication so not shown with a manifold 5 located at the desired altitude. This collector can be of the cyclone or other known type.

Au centre de la colonne 1, on a disposé un tube de transfert 6 dont la base 6a communique avec l'espace interne la de la colonne. Cette base 6a est située à une distance d d'une buse 7 d'injection d'une veine d'air dans le tube. L'extrémité supérieure 6b du tube 6 débouche dans un capteur auxiliaire 8 qui fait également office de ralentisseur et qui est lui-même connecté au collecteur principal 5. La représentation de la buse 7 est tout à fait schématique. Il convient que celle-ci soit facilement accessible pour régler ladite distance d mais également son diamètre et sa situation par rapport à la grille 2. Il peut également être intéressant que le tube 6 soit mobile si l'on veut modifier d'une autre manière la distance d susdite.In the center of column 1, a transfer tube 6 has been placed, the base 6a of which communicates with the internal space la of the column. This base 6a is located at a distance d from a nozzle 7 for injecting an air stream into the tube. The upper end 6b of the tube 6 opens into an auxiliary sensor 8 which also acts as a retarder and which is itself connected to the main manifold 5. The representation of the nozzle 7 is entirely schematic. It should be easily accessible to adjust said distance d but also its diameter and its location relative to the grid 2. It may also be advantageous for the tube 6 to be movable if one wishes to modify in another way the above distance.

Enfin, sur cette figure, on voit une canalisation annulaire 9 dont la partie inférieure est pourvue d'orifices de pulvérisation d'un liquide (eau) de refroidissement de la paroi de la colonne 1, cette eau étant recueillie par un bac annulaire 10 de drainage. On a symbolisé en 11 un dispositif de refroidissement séparé du tube 6.Finally, in this figure, an annular pipe 9 can be seen, the lower part of which is provided with orifices for spraying a liquid (water) for cooling the wall of the column 1, this water being collected by an annular tank 10 of drainage. There is symbolized at 11 a cooling device separate from the tube 6.

Sur la figure 2, qui est une vue de détail d'un mode de réalisation de la figure 1, au niveau de la grille de fluidisation et du tube 6, on retrouve certains des éléments déjà décrits avec les mêmes références. On voit sur cette figure que la buse 7 est axialement alignée avec le tube 6 (des guides 12 permettent de garder cet alignement). Elle met en communication directe la boîte à vent 3 avec l'intérieur la de la colonne. Comme la perte de charge de la buse est beaucoup plus faible que celle de la grille 2, il se produit un flux d'air ou de gaz qui atteint la base 6a du tube 6 en créant une aspiration de l'atmosphère ambiante autour des éléments 6 et 7. En réglant la distance d séparant l'extrémité de la buse de l'extrémité du tube 6, on règle l'effet d'aspiration et donc le r6le du tube 6. Ce réglage est avantageusement réalisé en montant sur la grille 2 des buses de différentes longueurs axiales. On peut également alimenter la buse 7 par une source d'air comprimé indépendante de la botte à vent. On peut également prévoir sans sortir du cadre de l'invention tout autre système de buse 7 accessible directement par l'extérieur et dont il est possible également de faire varier le diamètre pour un réglage du fonctionnement de l'appareil.In Figure 2, which is a detailed view of an embodiment of Figure 1, at the fluidization grid and the tube 6, there are some of the elements already described with the same references. It can be seen in this figure that the nozzle 7 is axially aligned with the tube 6 (guides 12 make it possible to keep this alignment). It places the wind box 3 in direct communication with the interior of the column. As the pressure drop of the nozzle is much lower than that of the grid 2, there is a flow of air or gas which reaches the base 6a of the tube 6 by creating an aspiration of the ambient atmosphere around the elements 6 and 7. By adjusting the distance d separating the end of the nozzle from the end of the tube 6, the suction effect and therefore the role of the tube 6 are adjusted. This adjustment is advantageously carried out by mounting on the grid 2 nozzles of different axial lengths. The nozzle 7 can also be supplied by a source of compressed air independent of the wind boot. We can also plan without going outside the framework of the invention any other nozzle system 7 accessible directly from the outside and the diameter of which can also be varied to adjust the operation of the device.

Le produit amené sur la grille 2 étant d'une granulométrie répartie dans une large fourchette (selon une répartition de gauss notamment), on règle la pression de la boîte à vent de manière que la principale partie des grains soit transportée pneumatiquement dans la colonne 6 selon une vitesse déterminée par le taux de refroidissement que l'on désire. Mais les particules les plus lourdes ont tendance à rester dans l'espace la, voire à se concentrer au niveau de la grille 2. L'effet d'aspiration décrit ci-dessus crée un balayage de cet espace d'une force suffisante pour entraîner ces particules lourdes qui sont rapidement propulsées dans le capteur auxiliaire 8.The product brought to the grid 2 being of a particle size distributed over a wide range (in particular according to a distribution of gauss), the pressure of the wind box is adjusted so that the main part of the grains is transported pneumatically in column 6 according to a speed determined by the cooling rate that is desired. However, the heaviest particles tend to remain in the space la, or even to concentrate at the level of the grid 2. The suction effect described above creates a sweeping of this space of sufficient force to cause these heavy particles which are rapidly propelled into the auxiliary sensor 8.

Pour ces particules lourdes, le transfert est réalisé au détriment du refroidissement, ce qui peut être ensuite compensé, si nécessaire, par un refroidissement plus énergique en 11 ou en allongeant la longueur des canaux de transfert. En tout état de cause, le pourcentage des particules concerné restant faible par rapport à la totalité du produit, l'incidence calorifique peut être négligée.For these heavy particles, the transfer is carried out to the detriment of the cooling, which can then be compensated, if necessary, by more vigorous cooling at 11 or by lengthening the length of the transfer channels. In any event, since the percentage of particles concerned remains low compared to the total product, the calorific incidence can be neglected.

L'invention trouve une application intéressante dans le domaine du traitement des matières finement divisées.The invention finds an interesting application in the field of treatment of finely divided materials.

Claims (6)

1. Procédé pour le transport vertical ascendant et la réalisation d'échanges thermiques concomitant sur un matériau pulvérulent présentant une large distribution granulométrique, caractérisé en ce que l'on réalise, dans une même enceinte, une fluidisation du matériau pulvérulent, ladite fluidisation étant assurée jusqu'à un certain degré et jusqu'à envol de la partie correspondante dudit matériau pulvérulent, et un entraînement pneumatique des particules restantes à partir de la base du lit fluidisé.1. Method for the vertical upward transport and the realization of concomitant heat exchanges on a pulverulent material having a wide particle size distribution, characterized in that one carries out, in the same enclosure, a fluidization of the pulverulent material, said fluidization being ensured to a certain degree and until the corresponding part of said pulverulent material takes off, and a pneumatic drive of the remaining particles from the base of the fluidized bed. 2. Dispositif d'élévation et de refroidissement d'un matériau finement divisé dont la granulométrie s'étend sur une plage importante, caractérisé en ce qu'il est constitué par une colonne (1) pourvue à sa base d'une grille (2) de fluidisation, sous laquelle est ménagée une botte à vent (3), d'une arrivée (4) du matériau au-dessus de ladite grille (2) et d'un tube central de transfert (6) dont la base (6a) est située à une certaine distance d réglable d'une buse (7) d'injection de gaz en direction du tube.2. Device for raising and cooling a finely divided material, the grain size of which extends over a large range, characterized in that it consists of a column (1) provided at its base with a grid (2 ) fluidization, under which is provided a wind boot (3), an inlet (4) of the material above said grid (2) and a central transfer tube (6) whose base (6a ) is located at a certain adjustable distance d from a gas injection nozzle (7) in the direction of the tube. 3. Dispositif selon la revendication 2, caractérisé en ce que la colonne (1) susdite communique à sa partie supérieure avec un collecteur (5) du produit, tandis que le tube central (6) débouche dans un capteur (8) et ralentisseur auxiliaire lui-même connecté audit collecteur (5).3. Device according to claim 2, characterized in that the above-mentioned column (1) communicates at its upper part with a collector (5) of the product, while the central tube (6) opens into a sensor (8) and auxiliary retarder itself connected to said collector (5). 4. Dispositif selon la revendication 2 ou la revendication 3, caractérisé en ce que la buse (7) susdite est portée par la grille de fluidisation (2) susdite de manière démontable et constitue un moyen de réglage de la distance (d) la séparant de la base (6a) du tube central (6).4. Device according to claim 2 or claim 3, characterized in that the said nozzle (7) is carried by the above-mentioned fluidization grid (2) and constitutes a means for adjusting the distance (d) separating it from the base (6a) of the central tube (6). 5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la paroi extérieure de la colonne (1) est équipée d'un système de refroidissement (9, 10).5. Device according to any one of the preceding claims, characterized in that the external wall of the column (1) is equipped with a cooling system (9, 10). 6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le tube central (6) est équipé d'un refroidisseur indépendant (11).6. Device according to any one of the preceding claims, characterized in that the central tube (6) is equipped with an independent cooler (11).
EP83400637A 1982-04-02 1983-03-28 Method and apparatus for increasing and realizing heat exchanges on a pulverulent material having a large granulometric distribution Expired EP0091353B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83400637T ATE14924T1 (en) 1982-04-02 1983-03-28 METHOD AND DEVICE FOR LIFTING AND REALIZING HEAT EXCHANGE FOR POWDERY MATERIAL WITH A WIDE GRANULOMETRIC DISTRIBUTION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8205806A FR2524439A1 (en) 1982-04-02 1982-04-02 DEVICE FOR LIFTING AND COOLING A DIVIDED MATERIAL WITH VARIABLE GRANULOMETRY
FR8205806 1982-04-02

Publications (2)

Publication Number Publication Date
EP0091353A1 true EP0091353A1 (en) 1983-10-12
EP0091353B1 EP0091353B1 (en) 1985-08-14

Family

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Application Number Title Priority Date Filing Date
EP83400637A Expired EP0091353B1 (en) 1982-04-02 1983-03-28 Method and apparatus for increasing and realizing heat exchanges on a pulverulent material having a large granulometric distribution

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EP (1) EP0091353B1 (en)
AT (1) ATE14924T1 (en)
DE (1) DE3360551D1 (en)
ES (1) ES8404660A1 (en)
FR (1) FR2524439A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104634134A (en) * 2014-12-10 2015-05-20 新奥科技发展有限公司 Fluidized bed cooler, cooling method and coal hydrogenation gasification system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1034592B (en) * 1953-12-31 1958-07-24 Haldor Frederik Axel Topsoe Di Process for carrying out chemical reactions in the gas phase in the presence of circulating contact bodies that serve as heat carriers
DE1082607B (en) * 1956-11-09 1960-06-02 Metallgesellschaft Ag Device for cooling hot, small items
FR1350734A (en) * 1962-12-04 1964-01-31 Improvements to heat exchangers
DE1551424A1 (en) * 1967-06-29 1970-10-29 Franz Jos Waeschle Fa Method and device for cooling powdery goods
FR2117314A5 (en) * 1970-12-03 1972-07-21 Polysius Ag Cooling powder material - esp for cement
GB1296057A (en) * 1969-07-09 1972-11-15
FR2229120A1 (en) * 1973-05-08 1974-12-06 Euratom

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1034592B (en) * 1953-12-31 1958-07-24 Haldor Frederik Axel Topsoe Di Process for carrying out chemical reactions in the gas phase in the presence of circulating contact bodies that serve as heat carriers
DE1082607B (en) * 1956-11-09 1960-06-02 Metallgesellschaft Ag Device for cooling hot, small items
FR1350734A (en) * 1962-12-04 1964-01-31 Improvements to heat exchangers
DE1551424A1 (en) * 1967-06-29 1970-10-29 Franz Jos Waeschle Fa Method and device for cooling powdery goods
GB1296057A (en) * 1969-07-09 1972-11-15
FR2117314A5 (en) * 1970-12-03 1972-07-21 Polysius Ag Cooling powder material - esp for cement
FR2229120A1 (en) * 1973-05-08 1974-12-06 Euratom

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104634134A (en) * 2014-12-10 2015-05-20 新奥科技发展有限公司 Fluidized bed cooler, cooling method and coal hydrogenation gasification system
CN104634134B (en) * 2014-12-10 2016-06-22 新奥科技发展有限公司 Fluidized bed cooler, cooling means and coal hydrogenation gasification system

Also Published As

Publication number Publication date
ES521075A0 (en) 1984-05-16
ATE14924T1 (en) 1985-08-15
EP0091353B1 (en) 1985-08-14
FR2524439A1 (en) 1983-10-07
ES8404660A1 (en) 1984-05-16
FR2524439B1 (en) 1984-07-13
DE3360551D1 (en) 1985-09-19

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