EP2220434B1 - Appareil de combustion à lit fluidisé - Google Patents

Appareil de combustion à lit fluidisé Download PDF

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Publication number
EP2220434B1
EP2220434B1 EP08865868A EP08865868A EP2220434B1 EP 2220434 B1 EP2220434 B1 EP 2220434B1 EP 08865868 A EP08865868 A EP 08865868A EP 08865868 A EP08865868 A EP 08865868A EP 2220434 B1 EP2220434 B1 EP 2220434B1
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EP
European Patent Office
Prior art keywords
bed
fluidised
heat exchange
fluidized bed
arrangement
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.)
Expired - Fee Related
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EP08865868A
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German (de)
English (en)
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EP2220434A1 (fr
Inventor
Michael Kaden
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Individual
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Individual
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Priority claimed from DE200720018018 external-priority patent/DE202007018018U1/de
Priority claimed from DE102007062390A external-priority patent/DE102007062390B3/de
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Priority to PL08865868T priority Critical patent/PL2220434T3/pl
Publication of EP2220434A1 publication Critical patent/EP2220434A1/fr
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Publication of EP2220434B1 publication Critical patent/EP2220434B1/fr
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
    • F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone

Definitions

  • the invention relates to a fluidized bed combustion.
  • Such fluidized bed combustion systems are used in various embodiments in order to burn fuels, in particular also waste materials, and thus to generate hot gas, which can be used for further processes.
  • Such fluidized bed combustors are typically integrated in a furnace and have at least one fluidized bed containing inert material, such as sand, limestone or ash, to which gas, in particular air, is supplied via a nozzle arrangement. Further, the furnace to be fired fuels are supplied via a feeder. By spraying with the nozzle assembly, the inert material is fluidized and mixed with the fuel to be fired. The ignition during the heating of the combustion process by means of a burner.
  • inert material such as sand, limestone or ash
  • a circulating fluidized bed combustion is generally possible by the return of the fluidized material stirred up from the fluidized bed via heat exchangers an adjustable heat output.
  • the disadvantage of circulating fluidized-bed furnaces is the high constructional complexity which arises, in particular, due to the return of the wound-up material. Also problematic are the high particle velocities within the fluidized bed combustion, which leads to an increased wear of components within the fluidized bed combustion and requires the high power requirement of the fan.
  • a fluidized bed combustion which has a first fluidized bed and a laterally arranged next to this second fluidized bed. During operation, a transfer of bed material from the first fluidized bed to the second fluidized bed takes place. Via a feed line and an injector cooled bed material from the second fluidized bed is recycled to the first fluidized bed.
  • a corresponding fluidized bed furnace is from the US 5,060,599 A known.
  • the invention has for its object to provide a stationary fluidized bed with improved functionality.
  • the invention relates to a fluidized bed combustion with a first stationary fluidized bed, which are supplied to fuels to be fired.
  • the first Fluidized bed is associated with a second stationary fluidized bed with Tauchsammlung vom.
  • a heat output from the first fluidized bed is obtained by excess bed material is automatically guided from the first fluidized bed to the second fluidized bed.
  • cooled bed material is traceable to the first fluidized bed in the second fluidized bed.
  • the fluidized bed furnace has an oven and is integrated in this.
  • a cyclone disposed on a side wall of the furnace is provided, by means of which a circulating flow directed above the fluidized bed is generated in the interior of the furnace in a horizontal direction.
  • a portion of the hot gases discharged from the furnace by means of the cyclone are returned to the furnace by means of a secondary air injector and / or mixed air or flue gas denitration gases are injected into the cyclone to enhance the circulating flow in the furnace.
  • hot gas is generated on the one hand by the combustion of fuels.
  • This hot gas can be used for different processes.
  • the heat discharged via the immersion heating surface from the first fluidized bed can also be used for external processes.
  • the immersion heating surfaces are formed by the surfaces of a heat exchanger arrangement.
  • heat exchange fluids in particular thermal oil, are heated by the heat discharged from the first fluidized bed.
  • An essential advantage of the invention is that an adjustable heat output is made possible for the fluidized bed combustion, whereby an optimal combustion process is obtained at different process parameters.
  • the setting of the heat output can be completely independent of the setting of the temperature of the hot gas generated by the fluidized bed combustion.
  • the setting of the hot gas temperature is carried out by the specification of the air / fuel ratio, that is, the ratio of the air volume supplied to the first fluidized bed and the amount of fuel supplied.
  • the heat release can be advantageously adjusted by adjusting the amount of bed material returned to the first fluidized bed. If there is an excess of bed material in the first fluidized bed, this flows over to the second fluidized bed and is cooled by the contact with the immersion heating surface. The more of the cooled bed material returned from the second fluidized bed to the first fluidized bed, the greater the excess bed material, the more bed material is passed from the first to the second fluidized bed. As a result, the greater the amount of heat released, the greater the amount of bed material returned to the first fluidized bed.
  • a pipe system with at least one nozzle is preferably provided, which is controlled by a control unit.
  • a control unit so the amount of recycled bedding material can be precisely specified.
  • the quantity control of the recycled bed material can be integrated into a control loop, wherein the recycled amount of the bed material can be predetermined depending on the temperature of the guided in the heat exchangers thermal oil.
  • the heat removal via the second fluidized bed is independent of the setting of the hot gas temperature, which is predetermined by the specification of the air-fuel ratio, the efficiency of the fluidized bed combustion can be optimally adjusted within wide ranges.
  • the first fluidized bed has a significantly lower height in comparison to known fluidized beds with immersion heating surfaces, since the immersion heating surfaces are displaced into the second fluidized bed.
  • the required pressure of the combustion air which increases linearly with the fluidized bed height, in the first fluidized bed of fluidized bed combustion according to the invention is considerably lower than in known fluidized beds with immersion heating surfaces integrated there.
  • the low pressure required leads to a significant reduction of the required fan power and thus to a significant reduction in operating costs.
  • a high pressure of the combustion air is required for the second fluidized bed, however, the second fluidized bed is considerably smaller than the first fluidized bed and the gas velocity is lower than in the first fluidized bed, so that overall a considerable saving effect remains.
  • the area of the second fluidized bed with the fluidized bed combustion is spatially separated from the furnace with the first fluidized bed.
  • the gas velocities in the second fluidized bed are advantageously considerably lower than in the first fluidized bed.
  • the heat exchanger arrangement forming the immersion heating surfaces is particularly advantageously designed as a modular, exchangeable unit, whereby the fluidized bed combustion according to the invention can be converted quickly and easily.
  • the heat exchanger tubes of the heat exchanger assembly are mounted in holders which have irregular distances from one another.
  • vibrations of the heat exchanger tubes can be effectively damped during operation of the fluidized bed combustion. Due to the different distances of the brackets to each other namely vibrations of the heat exchanger tubes are avoided in the form of standing waves, whereby the life of the heat exchanger tubes is specifically increased.
  • a nozzle arrangement is associated with the second fluidized bed, which allows the individual segments of the heat exchanger tubes between the individual brackets separately to apply air, whereby the cherriesaustrag can be specifically controlled with the heat exchanger assembly.
  • the fluidized bed combustion according to the invention can generally be modified or extended so that instead of a first fluidized bed and a second fluidized bed, a plurality of first fluidized bed and / or a plurality of second fluidised bed can be provided, wherein different geometric arrangements of the fluidized bed are possible.
  • An essential aspect of the invention consists in that a cyclone arranged on a side wall of the furnace is provided for the outlet of hot gas from the furnace of the fluidized bed furnace, by means of which a circulating, circulating flow above the fluidized bed directed in the horizontal direction is generated in the interior of the furnace.
  • Another advantage of this arrangement is that the cyclone can be arranged on the outside of the furnace, that is, in the furnace no corresponding components must be installed.
  • part of the hot gases discharged from the furnace by means of the cyclone are returned to the furnace by means of a secondary air injection device, so that the circulating flow in the furnace is intensified.
  • a further variant of the invention provides that mixed air or gases for flue gas denitration are blown into the cyclone itself.
  • the injection is preferably carried out so that the horizontal circulating flow is thereby enhanced in the oven.
  • the injection of mixed air thereby promotes the afterburning of carbon monoxide and / or hydrocarbons contained in the hot gas stream.
  • the blowing of gases with ammonia or urea for flue gas denitrification is particularly efficient in the area of the cyclone, since There by a strong Verwverwirbelung the necessary chemical reactions run particularly well.
  • FIG. 1 shows a schematic representation of an embodiment of the fluidized bed combustion according to the invention 1.
  • the fluidized bed furnace 1 has a furnace 2, the masonry walls 3 are sealed on the outside with tiles.
  • the furnace 2 has a main space 4, in which fuel can be introduced via inlets 5 to be fired.
  • a first fluidized bed 6 is furthermore located in the main chamber 4 for forming a stationary fluidized bed furnace 1.
  • This comprises a first nozzle arrangement 7 with a flat field of nozzles 8, preferably extending over the entire area of the main chamber 4, which are connected to the nozzle chambers 9 with gas. in particular air are applied.
  • bed material 10 in the form of sand, ash or the like.
  • the nozzle arrangement 7 is mounted on a frame 11.
  • the term nozzle arrangement 7 is generally the entire air supply system for the fluidized bed 6, namely a nozzle box 9 for the introduction of air and a downstream arrangement of tubes 22, to which the individual nozzles 8 are arranged.
  • the combustion process is ignited by means arranged in the furnace 2 burners 12, such as gas burners or oil burners.
  • the fuel hot gas is generated, which is discharged through an outlet 13 from the furnace 2.
  • the hot gas is then available as an energy source for performing externally running processes.
  • the temperature of the hot gas can be set by the air-fuel ratio, that is, the ratios of the amounts of air added through the nozzle assembly 7 and the amount of fuel supplied.
  • the outlet in the form of an involute or the like is formed, through which a tangential air flow is generated in the region of the outlet, which causes conditionally contained by the centrifugal forces acting in the air flow particles are guided to the edge of the outlet.
  • the outlet is designed so that the accumulating particles can fall back into the oven.
  • the furnace 2 has, in addition to the main space 4, an adjoining space 14, which is partially separated by a partition wall 15 extending vertically from the bottom of the furnace 2 in front of the main space 4.
  • the ceiling of the furnace 2 in the area of the auxiliary space 14 is considerably lower than the ceiling of the furnace 2 in the region of the main space 4.
  • a second nozzle assembly 16 with an array of nozzles 17 and nozzle boxes 18, which are also mounted on a frame 19.
  • This nozzle assembly 16 is lower than the nozzle assembly 7 in the main space 4.
  • a heat exchanger assembly 20 is arranged, the elements form Tauchsammlung vom.
  • the nozzle arrangement 7 with the heat exchanger arrangement 20 serves to form a second fluidized bed 6 ', wherein this bed material 21 also comprises inert material.
  • FIG. 1 it is evident that the upper side of the nozzle arrangement 7 of the first fluidized bed 6 is at least approximately flush with the upper side of the heat exchanger arrangement 20, wherein the upper edge of the intermediate wall 15 lies approximately at the same height. Accordingly, the upper edges of the bed materials 10, 21 are at the same level.
  • the height of the intermediate wall 15, is chosen so that a passage between the secondary 14 and main space 4 is given, through which the bed material 10 in the direction indicated by the arrow in FIG. 1 can flow over inclined direction.
  • bed material 10, 21 can be supplied from the second fluidized bed 6 'to the first fluidized bed 6 by means of a recirculation unit.
  • the recirculation unit in the present case comprises a tube 22 which leads from the underside of the second fluidized bed 6 'to the underside of the first fluidized bed 6.
  • a vertically extending pipe section terminates at the second fluidized bed 6 'and is adjoined by a horizontal pipe section, from which finally a further vertical pipe section leads to the first fluidized bed 6.
  • an injector nozzle 23 of a not shown Control unit is controlled.
  • FIG. 2 shows a detailed view of the structure of the heat exchanger assembly 20.
  • the heat exchanger assembly 20 consists of an arrangement of heat exchanger tubes 24, in which thermal oil is performed as a heat transfer medium.
  • the heat exchanger tubes 24 are mounted in plate-shaped holders 25a-d.
  • input and output ports 26 of the heat exchanger assembly 20 are provided on a front-side support 25d input and output ports 26 of the heat exchanger assembly 20 are provided.
  • the planes of the brackets 25a-d are oriented perpendicular to the longitudinal directions of the heat exchanger tubes 24.
  • the heat exchanger tubes 24 are fixed in position in bores of the holders 25a-d.
  • the amount of recirculated bed material 21 can be arbitrary via the control unit be specified. The return can be done continuously or temporally discrete. Particularly advantageous is a controlled return as a function of the temperature of the thermal oil in the heat exchanger assembly 20th
  • the thermal oil in the heat exchanger arrangement 20 is heated.
  • the heat generated in this way can be used for external processes.
  • the removal of heat via the heat exchanger assembly 20 can be carried out independently of the combustion process, that is in particular without reducing the efficiency of the combustion process.
  • the gas velocities in the first fluidized bed 6 are significantly higher than the gas velocities in the second fluidized bed 6 ', which is achieved by the amount of air per unit area in the nozzle assembly 7 of the first fluidized bed 6 is considerably larger than in the nozzle assembly 16 of the second fluidized bed 6' ,
  • the gas velocities in the first fluidized bed 6 are in the range of 1 to 3 m / s and in the second fluidized bed 6 'in the range of 0.5 to 1.5 m / s.
  • the heat exchanger tubes 24 of the heat exchanger assembly 20 are thus exposed only to particles with low flow velocity, they are subjected to only little wear. This effect is exacerbated by the fact that only in the main room 4 with the first fluidized bed 6, a significant combustion of fuel, but not in the adjoining room 14 with the second fluidized bed 6 ', so there are significantly less pollutants.
  • the heat exchanger tubes 24 preferably have protective coatings, in particular Inconel coatings.
  • the middle brackets 25a-d of the heat exchanger assembly 20 are arranged asymmetrically, so that they share in the longitudinal direction of the heat exchanger assembly 20 extending heat exchanger tubes 24 into segments of different lengths.
  • the brackets 25a-d are arranged in the present case so that the lengths of the first segments of the heat exchanger tubes 24 between the brackets 25a and 25b about 15% of the total length of the heat exchanger tubes 24 between the brackets 25a and 25d, the lengths of second segments of the heat exchanger tubes 24 between the brackets 25b and 25c are about 35% of the total length and the lengths of the third segments are about 50% of the total length.
  • the nozzle assembly 16 is formed so that the individual segments of the heat exchanger tubes 24 are selectively acted upon with air from the nozzle assembly 16. Thereby, the choiraustrag can be adjusted with the heat exchanger assembly 20 in a simple manner.
  • FIG. 3 shows a detailed view of the heat exchanger assembly 20 according to FIG. 2 .
  • the heat exchanger tubes 24 are in the form of several, in the present case of three individual strands 24a-c formed, each of which forms a multiple between the front-side brackets 25a and 25d back and forth piping arrangements.
  • the single strands are shown pulled apart.
  • On the input side and output side control valves 27a-c, 28a-c are provided on the individual strands to form the input and output ports.
  • first temperature sensors 29a-c are provided on the input side of the individual strands, and second temperature sensors 30a-c are provided on the output side.
  • the aperture 31 a-c are provided on the output side.
  • FIG. 4 shows an external view of a variant of the fluidized bed combustion 1 according to FIG. 1 .
  • the components of the fluidized bed 1 within the Furnace 2, in particular the formation of the first fluidized bed 6 and the second fluidized bed 6 'with the associated Tauchsammlung vom correspond to the embodiment according to FIG. 1 ,
  • In the main area 2 a of the furnace 2 is the first fluidized bed 6, while in the subsequent, smaller side area 2 b of the furnace 2, the second fluidized bed 6 'is located.
  • FIG. 4 differs from the fluidized bed 1 according to FIG. 1 only in that instead of the outlet 13 at the top of the furnace 2 on the outside of a side wall of the furnace 2, a laterally arranged outlet device is provided which has a cyclone 27 as an essential part. Between the side wall and the cyclone 27 is a funnel-shaped hollow body 28th FIG. 5 shows a perspective view of the hollow body 28 and the cyclone 27 from the interior of the furnace 2 from. As a connection for the outlet device, a hollow cylindrical collar plate 29 is inserted into an opening in the side wall of the furnace 2.
  • a spiral gas flow is generated, which continues into the interior of the furnace 2.
  • This circulating flow is directed along the longitudinal side of the cyclone 27 and thus in the horizontal direction, wherein this flow is above the fluidized bed 6, 6 '.
  • the horizontal flow prevents unwanted fluidization of bed material on the fluidized beds 6, 6 '.
  • the circular flow is enhanced by the shape of the furnace 2 with a rounded, semi-cylindrical roof.
  • a Sekundär Kunststoffeinblasvorraum In order to at least partially lead the dust particles back into the furnace 2 and then burn them there in a second combustion process, a Sekundär Kunststoffeinblasvorectomy is provided.
  • This Sekundär Kunststoffeinblasvorectomy has at the lower end of the funnel-shaped hollow body an injector 30, that is, a jet nozzle. From there pipelines 31 back in the furnace 2. In the present case, the pipes 31 open directly below the inlets 5 for the fuel to be fired.
  • the hot gas contained in the furnace 2 is passed through the opening in the cyclone 27 and discharged from there. Dust particles contained in the hot gas therefore migrate outwards due to the centrifugal forces of the flow, are collected in the funnel-shaped hollow body 28 and returned to the furnace 2 via the injector 30 and then via the pipelines.
  • leading leads 32 are also provided in the cyclone 27 leading leads 32. Via these supply lines 32 gases in the form of mixed air and / or ammonia or urea are blown. By blowing in mixed air, an afterburning of carbon monoxide and hydrocarbons in the hot gas to be carried out is achieved. By blowing in ammonia, urea or the like a Rauchgasentstickung is achieved. The tangential blowing direction of the gases into the cyclone 27 further increases the circular flow generated there.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Treating Waste Gases (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Catalysts (AREA)

Claims (13)

  1. Foyer (1) à couche fluidisée, comportant un premier lit fluidisé stationnaire (6) auquel peuvent être délivrés des combustibles voués à la combustion, un second lit fluidisé stationnaire (6'), à surfaces chauffantes immergées, étant associé audit premier lit fluidisé (6) et une extraction de chaleur, hors du premier lit fluidisé (6), étant obtenue par transfert automatique de substance de garnissage excédentaire (10) au second lit fluidisé (6'), à partir dudit premier lit fluidisé (6), et de la substance de garnissage (21), refroidie dans ledit second lit fluidisé (6'), pouvant être renvoyée audit premier lit fluidisé (6), sachant que ledit foyer (1) à couche fluidisée comporte un four (2) dans lequel il est intégré, et sachant qu'un cyclone (27), au moyen duquel un écoulement à circulation orientée dans la direction horizontale est engendré dans l'espace interne du four (2) au-dessus des lits fluidisés (6, 6'), est prévu sur une paroi latérale dudit four (2) aux fins d'évacuation (13) de gaz chauds hors dudit four (2), caractérisé par le fait qu'une partie des gaz chauds, expulsés du four (2) au moyen du cyclone (27), est réintroduite dans ledit four (2) au moyen d'un dispositif d'insufflation d'air secondaire, de manière à amplifier l'écoulement en circulation dans ledit four (2) ; et/ou par le fait que de l'air mixte ou des gaz est (sont) insufflé(s) dans ledit cyclone (27), en vue de la dénitruration des gaz de fumées, de façon telle que l'écoulement en circulation dans ledit four (2) soit amplifié.
  2. Foyer à couche fluidisée, selon la revendication 1, caractérisé par le fait que les surfaces chauffantes immergées sont formées par un système (20) échangeur de chaleur, un fluide d'échange thermique étant réchauffé dans ledit système (20) échangeur de chaleur ; et par le fait que de la chaleur de processus, extérieurement exploitable, est engendrée suite au réchauffage dudit fluide d'échange thermique.
  3. Foyer à couche fluidisée, selon la revendication 2, caractérisé par le fait que le système (20) échangeur de chaleur comporte un ensemble de tubulures (24) d'échange thermique qui sont montées dans plusieurs éléments de retenue (25a-d), les segments desdites tubulures (24) d'échange thermique, situés entre différents éléments de retenue (25a-d) voisins, présentant des dimensionnements différents, sachant que lesdits éléments de retenue (25a-d) sont constitués par des plaques installées à des distances mutuelles différentes, en succession dans des plans s'étendant parallèlement dans la direction longitudinale des tubulures (24) d'échange thermique, et sachant que lesdites tubulures (24) d'échange thermique sont logées dans des perçages desdits éléments de retenue (25ad).
  4. Foyer à couche fluidisée, selon l'une des revendications 2 ou 3, caractérisé par le fait que les tubulures (24) d'échange thermique du système (20) échangeur de chaleur forment plusieurs tronçons individuels surveillés, en mode individuel, par des unités de surveillance qui leur sont assignées, chaque unité de surveillance surveillant, pour chaque tronçon individuel, la différence de température entre le fluide d'échange thermique à l'admission et à la sortie, ainsi que le débit dudit fluide d'échange thermique, sachant notamment que les différences de températures et les débits desdits tronçons individuels sont respectivement réglés sur des valeurs identiques, au moyen desdites unités de surveillance.
  5. Foyer à couche fluidisée, selon l'une des revendications 2 à 4, caractérisé par le fait que le système (20) échangeur de chaleur forme un ensemble unitaire, modulaire et remplaçable.
  6. Foyer à couche fluidisée, selon l'une des revendications 1 à 5, caractérisé par le fait que le premier lit fluidisé (6) et le second lit fluidisé (6') sont respectivement pourvus d'un ensemble de buses (7, 16) pouvant être sollicité par de l'air, les régions situées entre deux éléments de retenue (25a-d) du système (20) échangeur de chaleur pouvant, sélectivement, être sollicitées par de l'air au moyen de l'ensemble de buses (16).
  7. Foyer à couche fluidisée, selon la revendication 6, caractérisé par le fait que l'ensemble de buses (16) du second lit fluidisé (6') est situé plus bas que l'ensemble de buses (7) du premier lit fluidisé (6) ; par le fait que le système (20) échangeur de chaleur est placé au-dessus dudit ensemble de buses (16) du second lit fluidisé (6') ; et par le fait que les faces supérieures desdits lits fluidisés (6, 6') sont mutuellement limitrophes, de façon telle que de la substance de garnissage excédentaire (10) du premier lit fluidisé (6) afflue sur le second lit fluidisé (6').
  8. Foyer à couche fluidisée, selon la revendication 7, caractérisé par le fait que les deux lits fluidisés (6, 6') sont séparés par une cloison (15), la hauteur de ladite cloison (15) étant dimensionnée de telle sorte que la substance de garnissage (10) excédentaire puisse, par franchissement du bord supérieur, affluer dans le second lit fluidisé (6') à partir du premier lit fluidisé (6).
  9. Foyer à couche fluidisée, selon l'une des revendications 1 à 8, caractérisé par le fait qu'un réseau de tubulures, muni d'au moins une buse, est prévu en tant qu'unité de réintroduction dévolue au renvoi de substance de garnissage refroidie (21) au premier lit fluidisé (6), à partir du second lit fluidisé (6'), ladite buse étant pilotée par une unité de commande, sachant que l'extraction de chaleur hors dudit premier lit fluidisé (6) peut être régulée, dans l'unité de commande, par une commande quantitative de la substance de garnissage (21) renvoyée au moyen de ladite buse, et sachant que la régulation s'opère, dans ladite unité de commande, en fonction de la température du fluide d'échange thermique dans le système (20) échangeur de chaleur.
  10. Foyer à couche fluidisée, selon l'une des revendications 2 à 9, caractérisé par le fait que le fluide d'échange thermique se présente comme de l'huile thermique.
  11. Foyer à couche fluidisée, selon l'une des revendications 1 à 9, caractérisé par la génération, dans ledit foyer, de gaz chauds dont la température peut être régulée indépendamment de l'extraction de chaleur hors du second lit fluidisé (6'), sachant que le rapport, entre les combustibles délivrés et l'air fourni par l'intermédiaire de l'ensemble de buses (7) du premier lit fluidisé (6), est réglable en vue de prédéfinir ladite température des gaz chauds.
  12. Foyer à couche fluidisée, selon l'une des revendications 1 à 11, caractérisé par le fait que la vitesse d'écoulement, dans le second lit fluidisé (6'), est considérablement moindre que la vitesse d'écoulement dans le premier lit fluidisé (6).
  13. Foyer à couche fluidisée, selon l'une des revendications 1 à 12, caractérisé par le fait que ledit foyer compte plusieurs premiers lits fluidisés (6) et/ou plusieurs seconds lits fluidisés (6').
EP08865868A 2007-12-22 2008-10-18 Appareil de combustion à lit fluidisé Expired - Fee Related EP2220434B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08865868T PL2220434T3 (pl) 2007-12-22 2008-10-18 Palenisko fluidalne

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200720018018 DE202007018018U1 (de) 2007-12-22 2007-12-22 Wirbelschichtfeuerung
DE102007062390A DE102007062390B3 (de) 2007-12-22 2007-12-22 Wirbelschichtfeuerung
PCT/EP2008/008829 WO2009080140A1 (fr) 2007-12-22 2008-10-18 Appareil de combustion à lit fluidisé

Publications (2)

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EP2220434A1 EP2220434A1 (fr) 2010-08-25
EP2220434B1 true EP2220434B1 (fr) 2012-04-18

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EP08865868A Expired - Fee Related EP2220434B1 (fr) 2007-12-22 2008-10-18 Appareil de combustion à lit fluidisé

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EP (1) EP2220434B1 (fr)
AT (1) ATE554344T1 (fr)
DK (1) DK2220434T3 (fr)
PL (1) PL2220434T3 (fr)
WO (1) WO2009080140A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013104381U1 (de) 2013-09-26 2013-10-09 Christa Frodeno Wirbelschichtfeuerung
DE102013110624A1 (de) 2013-09-26 2015-03-26 Christa Frodeno Wirbelschichtfeuerung
WO2015043946A1 (fr) 2013-09-26 2015-04-02 Frodeno, Christa Foyer à lit fluidisé

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SE457661B (sv) 1986-06-12 1989-01-16 Lars Axel Chambert Saett och reaktor foer foerbraenning i fluidiserad baedd
SE457905B (sv) 1986-08-28 1989-02-06 Abb Stal Ab Saett vid foerbraenning i fluidiserad baedd

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013104381U1 (de) 2013-09-26 2013-10-09 Christa Frodeno Wirbelschichtfeuerung
DE102013110624A1 (de) 2013-09-26 2015-03-26 Christa Frodeno Wirbelschichtfeuerung
WO2015043946A1 (fr) 2013-09-26 2015-04-02 Frodeno, Christa Foyer à lit fluidisé

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ATE554344T1 (de) 2012-05-15
PL2220434T3 (pl) 2012-09-28
EP2220434A1 (fr) 2010-08-25
WO2009080140A1 (fr) 2009-07-02
DK2220434T3 (da) 2012-06-18

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