FR2513741A1 - Waste heat boiler for coal gasification processes - transfers heat in annular chamber with water-cooled walls - Google Patents

Waste heat boiler for coal gasification processes - transfers heat in annular chamber with water-cooled walls Download PDF

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Publication number
FR2513741A1
FR2513741A1 FR8118078A FR8118078A FR2513741A1 FR 2513741 A1 FR2513741 A1 FR 2513741A1 FR 8118078 A FR8118078 A FR 8118078A FR 8118078 A FR8118078 A FR 8118078A FR 2513741 A1 FR2513741 A1 FR 2513741A1
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Prior art keywords
tubes
bundle
annular
boiler
water
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FR8118078A
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French (fr)
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FR2513741B1 (en
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Jacques Dreuilhe
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Creusot Loire SA
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Creusot Loire SA
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00Methods of steam generation characterised by form of heating method
    • F22B1/02Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1838Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines the hot gas being under a high pressure, e.g. in chemical installations
    • F22B1/1846Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines the hot gas being under a high pressure, e.g. in chemical installations the hot gas being loaded with particles, e.g. waste heat boilers after a coal gasification plant
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46Gasification of granular or pulverulent flues in suspension
    • C10J3/48Apparatus; Plants
    • C10J3/52Ash-removing devices
    • C10J3/526Ash-removing devices for entrained flow gasifiers
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72Other features
    • C10J3/74Construction of shells or jackets
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72Other features
    • C10J3/86Other features combined with waste-heat boilers
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00Details of gasification processes
    • C10J2300/09Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0913Carbonaceous raw material
    • C10J2300/093Coal
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00Details of gasification processes
    • C10J2300/09Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0953Gasifying agents
    • C10J2300/0959Oxygen
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/129Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Gasification And Melting Of Waste (AREA)

Abstract

Boiler to recover heat from gas stream containing molten slag particles comprises a vertical firebrick lined vessel in which are located two concentric vertical cylindrical walls of welded conventional boiler tubing employing familiar water wall construction. Gas enters vertically down through the central cylinder, reverses and passes back up the outer annulus. Slag is thrown out as the flow recesses and is quenched in a water bath in the base of the vessel. Heat is transferred to the water tubing from the gas before it exits through a side connection near the top of the vessel. Used for heat recovery in high temp. coal gasification processes.

Description

La presente invention se rapporte à une chaudière de récupération de chaleur alimentée par un gaz chargé de cendres fondues dans une installation de gazéification de combustibles solides notamment de charbon. Elle est plus particulièrement destinée à une installation de gazeification de charron conforme au procédé dans lequel le charbon subit une oxydation audessus du point de fusion de la cendre. The present invention relates to a heat recovery boiler supplied with a gas charged with molten ash in a gasification plant for solid fuels, in particular coal. It is more particularly intended for a coal gasification installation in accordance with the process in which the coal undergoes oxidation above the melting point of the ash.

On connatt des procédés de gazéification du charbon dans lesquels le charbon, broyé finement, est envoyé dans un reacteur de gazeification avec de l'oxygène pur. Dans ce réacteur l'oxygène et le charbon réagissent à haute température de lanière qutil ne se forme ni goudron, ni produit liquide et que les cendres soient fondues. Le mélange de gaz et de cendres sort à haute température et sous pression du reacteur de gazéification et entre dans la chambre à rayonnement d'une chaudière de récupération de chaleur. Coal gasification processes are known in which the finely ground coal is sent to a gasification reactor with pure oxygen. In this reactor, the oxygen and the coal react at a high temperature, so that neither tar nor liquid product is formed and the ashes are melted. The gas and ash mixture leaves at high temperature and under pressure from the gasification reactor and enters the radiation chamber of a heat recovery boiler.

Le mélange gaz-cendres chauffe par rayonnement un faisceau de tubes qui produit de la vapeur. Les cendres sont refroidies par un bain d'eau localisé au bas de ltenceinte de la chaudière et les gaz refroidis sont ensuite éva cues. The gas-ash mixture radiantly heats a bundle of tubes which produces steam. The ashes are cooled by a water bath located at the bottom of the boiler enclosure and the cooled gases are then evacuated.

La présente invention a pour but d'obtenir un gain en hauteur de la chaudière equipant une installation de gazéification du type précité. Elle permet d'éliminer, par gravité, le maximum de cendres fondues avant la chambre de rayonnement et de réduire ainsi le taux de cendres volantes à la sortie de la chaudière. Un système auxiliaire de ramonage n'est pas nécessaire. The object of the present invention is to obtain a gain in height of the boiler equipping a gasification installation of the aforementioned type. It eliminates, by gravity, the maximum amount of molten ash before the radiation chamber and thus reduces the rate of fly ash at the outlet of the boiler. An auxiliary sweeping system is not necessary.

La chaudière selon l'invention comporte un faisceau de tubes qui forme un couloir central canalisant le gaz chargé de cendres qui est détourné au bas de ce faisceau et au-dessus d'un bain de liquide pour être dirigé vers un orifice de sortie et elle est essentiellement caractérisée par le fait que ledit faisceau est associe à un faisceau de tubes pour délimiter, autour dudit couloir, une chambre de rayonnement annulaire qui est ouverte vers le bas et fermée vers le haut et qui communique avec l'orifice de sortie situé dans le quart supérieur de la hauteur de la chambre de rayonnement. The boiler according to the invention comprises a bundle of tubes which forms a central corridor channeling the gas charged with ash which is diverted at the bottom of this bundle and above a bath of liquid to be directed towards an outlet orifice and it is essentially characterized in that said bundle is associated with a bundle of tubes to delimit, around said corridor, an annular radiation chamber which is open at the bottom and closed at the top and which communicates with the outlet orifice located in the upper quarter of the height of the radiation chamber.

Selon une caractéristique de l'invention, la paroi interne du faisceau séparant le couloir central de la chambre annulaire de rayonnement est tapissée par un revêtement réfractaire. According to a characteristic of the invention, the internal wall of the beam separating the central corridor from the annular radiation chamber is lined with a refractory lining.

Selon une autre caractéristique, l'un au moins des faisceaux est raccorde à un circuit de copeslsation de dilatation alimenté en eau.  According to another characteristic, at least one of the beams is connected to a expansion copeslsation circuit supplied with water.

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

La figure 1 représente une coupe verticale de la chaudière selon lez invention.  Figure 1 shows a vertical section of the boiler according to the invention.

La figure 2 est une vue de détail, en coupe selon Il-Il, de la figure 1. FIG. 2 is a detail view, in section along Il-Il, of FIG. 1.

La chaudière représentée par les dessins annexés est montée sous un réacteur de gazéification, connu en soi, qui n'est pas représenté. Dans ce réacteur de gazéification on introduit le charbon finement broyé et de l'oxygène qui reagissent à haute température en donnant un gaz et des cendres fondues. Ce mélange gaz de réaction-cendres fondues descend dans le réacteur jusqu'à la sortie située à la partie inférieure. The boiler shown in the accompanying drawings is mounted under a gasification reactor, known per se, which is not shown. In this gasification reactor is introduced finely ground coal and oxygen which react at high temperature giving a gas and molten ash. This reaction gas-molten ash mixture descends into the reactor up to the outlet located at the bottom.

La chaudière est constituée par une cuve métallique 1 ayant une forme générale de révolution autour d'un axe vertical. Cette cuve est pour vue à la partie supérieure d'une tubulure d'entrée 11 qui est centrée sur l'axe verticai de révolutionl3 et qui est raccordée au réacteur de gazéification. Cette cuve est par ailleurs pourvue d'une tubulure de sortie 12 d'évacuation des gaz. Cette cuve est garnie intérieurement par un revetement réfractaire 2 qui ménage l'orifice central d'entrée des gaz 31 et l'o- rifice latéral de sortie des gaz 32. The boiler consists of a metal tank 1 having a general shape of revolution around a vertical axis. This tank is for view at the upper part of an inlet pipe 11 which is centered on the vertical axis of revolutionl3 and which is connected to the gasification reactor. This tank is also provided with an outlet pipe 12 for discharging the gases. This tank is internally lined with a refractory lining 2 which protects the central gas inlet orifice 31 and the lateral gas outlet orifice 32.

La cuve forme à sa partie inférieure une partie convergente qui contient un bain d'eau 6. A l'extrémité inférieure de la cuve se trouve un orifice d'évacuation des scories qui est noyé par le bain d'eau et qui communique avec un sas, non représenté. Ce sas, monté au-dessous de cet orifice d'évacuation, permet l'évacuation des scories après refroidissement dans le bain d'eau. The tank forms at its lower part a converging part which contains a water bath 6. At the lower end of the tank there is a slag discharge orifice which is embedded by the water bath and which communicates with a airlock, not shown. This airlock, mounted below this discharge orifice, allows the evacuation of the slag after cooling in the water bath.


A l'intérieur, la' chaudière comporte un faisceau central 4 de tu-
de tubes d'eau bes dteau et un faisceau périphérique y. Ces deux faisceaux de tubes sont chauffés par le rayonnement du gaz de réaction. Chaque faisceau est constitué de tubes rectilignes rangés selon les génératricesd'un cylindre. Le faisceau central 4 à rayonnement est logé à l'intérieur du faisceau périphérique 5 qui tapisse la paroi interne du garnissage réfractaire 2. Le faisceau central 4 forme un couloir central 33 de forme cylindrique dans lequel passe le courant de gaz et de cendres fondues. Le faisceau 4 et le faisceau 5 délimitent autour du couloir 33 une chambre annulaire de rayonnement 34 qui est tapissée par les tubes desdits faisceaux.Cette chambre annulaire de rayonnement qui fait tout le tour du faisceau 4 et du couloir 33 est limitée à l'intérieur par le faisceau central à rayonnement 4 et à l'ex- térieur par le faisceau périphérique à rayonnement 5. Cette chambre annulaire de rayonnement34 est ouverte vers le bas et fermée vers le haut et communique avec l'orifice de sortie 32. Elle canalise un courant de gaz qui remonte jusqu'à un passage ménagé dans le faisceau 5 au niveau de l'o- rifice de sortie 32. Elle communique avec le couloir 33 par l'espace annulaire inférieur 35 et elle est fermée vers le haut pour tre isolée de ce couloir 33. L'orifice 32 est situé dans le quart supérieur de la hauteur de la chambre de rayonnement.

Inside, the boiler has a central beam 4 of tu-
of water pipes bes dteau and a peripheral bundle there. These two bundles of tubes are heated by the radiation of the reaction gas. Each bundle consists of rectilinear tubes arranged according to the generatrices of a cylinder. The central beam 4 with radiation is housed inside the peripheral beam 5 which lines the internal wall of the refractory lining 2. The central beam 4 forms a central corridor 33 of cylindrical shape in which the stream of gas and molten ash passes. The beam 4 and the beam 5 delimit around the corridor 33 an annular radiation chamber 34 which is lined by the tubes of said beams. This annular radiation chamber which goes all around the beam 4 and the corridor 33 is limited to the interior by the central radiation beam 4 and outside by the peripheral radiation beam 5. This annular radiation chamber 34 is open at the bottom and closed at the top and communicates with the outlet orifice 32. It channels a gas current which rises to a passage in the bundle 5 at the outlet orifice 32. It communicates with the passage 33 through the lower annular space 35 and is closed upwards to be isolated of this corridor 33. The orifice 32 is located in the upper quarter of the height of the radiation chamber.

Les extrémités inférieures des tubes des faisceaux 4 et 5 débout chent dans des tuyauteries annulaires distributrices 41 et 51 respectivement entre lesquelles passe le courant de gaz qui remonte dans la -chambre à rayonnement. Les extrémités supérieures des tubes des faisceaux 4 et 5 débouchent respectivement dans des tuyauteries annulaires collectrices 42 et 52 respectivement. Les tubes du faisceau central 4 sont jointifs. Les espaces entre les tubes sont fermés de manière à isoler le couloir central 33 de la chambre de rayonnement 34. De mXe les tubes du faisceau périphérique sont jointifs. Les espaces entre lestubes sont fermés sauf au niveau de l'orifice de sortie 32 situe près du haut de la chambre 34. Au niveau de l'orifice 32 certains tubes du faisceau 5 sont conformés de manière à permettre le passage du gaz, les espaces entre les tubes étant vides.La fermeture de la chambre annulaire au niveau supérieur est obtenue par une cloison qui ferme l'espace annulaire compris entre les- tuyauteries annulaires supérieures des faisceaux 4 et 5. Cette cloison est montée soit entre les deux tuyauteries annulaires collectrices 42 et 52 soit entre la
tuyauterie annulaire collectrice 42 du faisceau central et lue garnissage réfractaire.
The lower ends of the tubes of the beams 4 and 5 lead into annular distributing pipes 41 and 51 respectively between which passes the gas current which rises in the radiation chamber. The upper ends of the tubes of the bundles 4 and 5 open respectively into annular collecting pipes 42 and 52 respectively. The tubes of the central bundle 4 are joined. The spaces between the tubes are closed so as to isolate the central corridor 33 from the radiation chamber 34. Similarly, the tubes of the peripheral beam are joined. The spaces between the tubes are closed except at the outlet orifice 32 located near the top of the chamber 34. At the orifice 32 certain tubes of the bundle 5 are shaped so as to allow the passage of the gas, the spaces between the tubes being empty. The closure of the annular chamber at the upper level is obtained by a partition which closes the annular space comprised between the upper annular pipes of bundles 4 and 5. This partition is mounted either between the two annular collecting pipes 42 and 52 either between the
annular collecting piping 42 of the central bundle and read refractory lining.

La paroi interne (coté couloir 33) du faisceau central 4 est tapissée par un revêtement ou garnissage en un matériau réfractaire 9 de type céramique. Ce revêtement est maintenu par des pattes 44 fixées aux entretoises séparant les tubas. The internal wall (aisle side 33) of the central bundle 4 is lined with a covering or lining in a refractory material 9 of ceramic type. This coating is maintained by lugs 44 fixed to the spacers separating the snorkels.

Les deux faisceaux 4 et 5 sont indépendants et fonctionnent en parallèle. Chaque faisceau 4 ou 5 est raccordé à au moins un circuit de compensation de dilatation 7 ou 8. Chaque faisceau 4 ou 5 est suspendu par le haut au garnissage réfractaire. Le circuit de compensation de dilatation 7 ou 8 est monté au-dessous du faisceau. Chaque circuit de compensation de dilatation 7 ou 8 est formé par un tube enroulé en hélice ou en serpentin autour de l'axe de révolution de la cuve. Il est branché par son extrémité inférieure et amont à une tuyauterie d'alimentation en eau qui traverse la cuve et par son extrémité supérieure et aval à la tuyauterie annulaire distributrice d'un faisceau à rayonnement. Le circuit 7 forme un couloir central 36 de forme cylindrique qui prolonge le couloir 33 vers le bas jusqu'au bain d'eau.Les circuits 7 et 8 forment entre eux un couloir annulaire 37. qui prolonge la chambre 34 vers le bas jusqu'au bain d'eau. The two beams 4 and 5 are independent and operate in parallel. Each bundle 4 or 5 is connected to at least one expansion compensation circuit 7 or 8. Each bundle 4 or 5 is suspended from above on the refractory lining. The expansion compensation circuit 7 or 8 is mounted below the beam. Each expansion compensation circuit 7 or 8 is formed by a tube wound in a helix or serpentine around the axis of revolution of the tank. It is connected by its lower and upstream end to a water supply pipe which passes through the tank and by its upper and downstream end to the annular piping distributing a radiation beam. Circuit 7 forms a central corridor 36 of cylindrical shape which extends corridor 33 down to the water bath. Circuits 7 and 8 form between them an annular corridor 37. which extends chamber 34 down to in a water bath.

L'évacuation de la vapeur steffectue par des tuyauteries d'évacuation 43 et 53 qui sont branchées respectivement sur les tuyauteries annulaires collectrices 42 et 52. The steam is evacuated by evacuation pipes 43 and 53 which are connected respectively to the annular collecting pipes 42 and 52.

Les circuits de compensation de dilatation7 et 8 sont coiffés par des capots- 71 et 81 qui évitent l'amoncellement des cendras. The expansion compensation circuits 7 and 8 are capped by covers 71 and 81 which prevent the accumulation of ashes.

Le fonctionnement de la chaudière va maintenant oetre expliqué.  The operation of the boiler will now be explained.

Le mélange gaz-cendres fondues descend vers le bas dans le couloir central 33. Au-dessous de la tuyauterie annulaire 41, les gaz subissent un changement de direction et passent par l'espace annulaire 35 ménagé entre ladite tuyauterie et le circuit 7. Les cendres fondues animées d'une vitesse élevée se séparent du gaz et descendeat, dans le couloir cylindrique 36 délimité par le circuit 7, vers le bain d'eau 6 situé au bas de la chambre. The gas-molten ash mixture descends down into the central passage 33. Below the annular piping 41, the gases undergo a change of direction and pass through the annular space 35 formed between said piping and the circuit 7. The molten ashes animated by a high speed separate from the gas and descendeat, in the cylindrical corridor 36 delimited by the circuit 7, towards the water bath 6 situated at the bottom of the chamber.

Les gaz remontent avec un mouvement giratoire dans la chambre annulaire de rayonnement 34, vers orifice de sortie 32. Dans le couloir central, l'écart de température du gaz entre. le haut et le bas est relativement faible, la température étant de l'ordre de 14000 au niveau de l'entrée 31 et de tordre de 13000 au niveau de la tuyauterie 41. Les échanges par rayonnement s'effectuent dans la chambre à rayonnement 34. Les sections respectives du couloir central 33 et de la chambre annulaire 34 sont telles que la vitesse dans ladite chambre est plus faible que la vitesse dans le couloir, ce qui favorise la décantation des cendres volantes. Le revêtement réfractaire 9 favorise les échanges par rayonnement dans la chambre de rayonnement 34. The gases rise with a gyratory movement in the annular radiation chamber 34, towards outlet orifice 32. In the central corridor, the gas temperature difference enters. the top and bottom are relatively low, the temperature being of the order of 14000 at the level of the inlet 31 and twisting of 13000 at the level of the piping 41. The exchanges by radiation take place in the radiation chamber 34 The respective sections of the central corridor 33 and of the annular chamber 34 are such that the speed in said chamber is lower than the speed in the corridor, which promotes the settling of fly ash. The refractory lining 9 promotes exchanges by radiation in the radiation chamber 34.

Il est bien entendu que l'on peut, sans sortir du cadre de l'invention, imaginer des variantes et perfectionnements de détails et de mêle envisager l'emploi de moyens équivalents.  It is understood that it is possible, without departing from the scope of the invention, to imagine variants and refinements of details and at the same time to envisage the use of equivalent means.

Claims (4)

REVENDICATIONS 1.- Chaudière de récupération alimentée par un gaz chargé de cendres fondues dans une installation de gazéification de combustibles solides, comportant un faisceau de tubes (4) qui forme un couloir central (33) canalisant le gaz chargé de cendres qui subit un changement de direction au bas de ce faisceau (4) et au-dessus d'un bain de liquide (6) être dirigé vers un ori 1.- Recovery boiler supplied with a gas charged with molten ash in a gasification plant for solid fuels, comprising a bundle of tubes (4) which forms a central corridor (33) channeling the gas charged with ash which undergoes a change of direction at the bottom of this beam (4) and above a liquid bath (6) be directed towards an ori /pour fice de sortie (32), caraftérisée par le fait que ledit faisceau (4) est associé à un faisceau de tubes (5) pour délimiter, autour dudit couloir (33), une chambre de rayonnement (34) tapissée par les tubes desdits faisceaux, de forme annulaire, qui est ouverte vers le bas et fermée vers le haut et qui communique avec l'orifice de sortie (32) situé dans le quart supérieur de la hauteur de la chambre de rayonnement. / for output port (32), characterized by the fact that said bundle (4) is associated with a bundle of tubes (5) to delimit, around said corridor (33), a radiation chamber (34) lined with tubes said beams, of annular shape, which is open downwards and closed upwards and which communicates with the outlet orifice (32) located in the upper quarter of the height of the radiation chamber. 2.- Chaudière selon la revendication 1, caractérisée par le fait que la paroi interne du faisceau (4) séparant le couloir central (33) de la chambre annulaire de rayonnement (34) est tapissée d'un revêtement réfractaire (9). 2.- Boiler according to claim 1, characterized in that the internal wall of the bundle (4) separating the central corridor (33) of the annular radiation chamber (34) is lined with a refractory lining (9). 3.- Chaudière selon l'une quelconque des revendications précédentes, caractérisée par le fait que l'un au moins des faisceaux (4, 5) est raccordé à un circuit de compensation de dilatation (7, 8) alimenté en eau. 3.- Boiler according to any one of the preceding claims, characterized in that at least one of the bundles (4, 5) is connected to a expansion compensation circuit (7, 8) supplied with water. 4.- Chaudière selon l'une quelconque des revendications précédentes, caractérisée par le fait que l'un au moins des faisceaux (4, 5) est formé de tubes jointifs rangés selon les génératrices d'un cylindre, ces tubes débouchant par leurs extrémités inférieures dans une tuyauterie annulaire distributrice (41, 51) et par leurs extrémités supérieures dans unetuyauterie annulaire collectrice (42, 52).  4.- Boiler according to any one of the preceding claims, characterized in that at least one of the bundles (4, 5) is formed of contiguous tubes arranged according to the generatrices of a cylinder, these tubes emerging at their ends lower in annular distributing piping (41, 51) and by their upper ends in annular collecting piping (42, 52).
FR8118078A 1981-09-25 1981-09-25 RECOVERY BOILER EQUIPPED WITH A GASIFICATION PLANT FOR SOLID FUELS Expired FR2513741B1 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0251005A1 (en) * 1986-07-02 1988-01-07 GebràœDer Sulzer Aktiengesellschaft Synthesis gas cooler
FR2603372A1 (en) * 1986-09-02 1988-03-04 Snam Progetti PROCESS AND APPARATUS FOR COOLING GASES AND / OR VAPORS LEAVING IN NON-FERROUS ORE PROCESSING PLANTS
EP0764825A3 (en) * 1995-09-13 1998-04-01 MAN Gutehoffnungshütte Aktiengesellschaft Protection of the inner wall of a heat exchanger against heat and corrosion
US5803937A (en) * 1993-01-14 1998-09-08 L. & C. Steinmuller Gmbh Method of cooling a dust-laden raw gas from the gasification of a solid carbon-containing fuel
WO2002086385A1 (en) * 2001-04-19 2002-10-31 Ebara Corporation Waste heat boiler
ITUB20160984A1 (en) * 2016-02-25 2017-08-25 Turboden Srl DIRECT HEAT EXCHANGER FOR ORGANIC RANKINE CYCLE SYSTEMS

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102399592A (en) * 2011-10-08 2012-04-04 湖北双环科技股份有限公司 Segmenting and partitioning coal gasification process of fixed bed

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2190250A5 (en) * 1972-06-19 1974-01-25 Gotaverkens Angtekniska Soc
FR2375564A1 (en) * 1976-12-23 1978-07-21 Gen Atomic Co TUBULAR BEAM ASSEMBLY WITH HELICOIDAL TUBES FOR HEAT EXCHANGER
EP0024281A1 (en) * 1979-08-21 1981-03-04 Deutsche Babcock Aktiengesellschaft Apparatus for the gasification of pulverized coal
GB2061758A (en) * 1979-10-04 1981-05-20 Ruhrchemie Ag Radiation boiler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2190250A5 (en) * 1972-06-19 1974-01-25 Gotaverkens Angtekniska Soc
FR2375564A1 (en) * 1976-12-23 1978-07-21 Gen Atomic Co TUBULAR BEAM ASSEMBLY WITH HELICOIDAL TUBES FOR HEAT EXCHANGER
EP0024281A1 (en) * 1979-08-21 1981-03-04 Deutsche Babcock Aktiengesellschaft Apparatus for the gasification of pulverized coal
GB2061758A (en) * 1979-10-04 1981-05-20 Ruhrchemie Ag Radiation boiler

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0251005A1 (en) * 1986-07-02 1988-01-07 GebràœDer Sulzer Aktiengesellschaft Synthesis gas cooler
FR2603372A1 (en) * 1986-09-02 1988-03-04 Snam Progetti PROCESS AND APPARATUS FOR COOLING GASES AND / OR VAPORS LEAVING IN NON-FERROUS ORE PROCESSING PLANTS
US5803937A (en) * 1993-01-14 1998-09-08 L. & C. Steinmuller Gmbh Method of cooling a dust-laden raw gas from the gasification of a solid carbon-containing fuel
EP0764825A3 (en) * 1995-09-13 1998-04-01 MAN Gutehoffnungshütte Aktiengesellschaft Protection of the inner wall of a heat exchanger against heat and corrosion
WO2002086385A1 (en) * 2001-04-19 2002-10-31 Ebara Corporation Waste heat boiler
ITUB20160984A1 (en) * 2016-02-25 2017-08-25 Turboden Srl DIRECT HEAT EXCHANGER FOR ORGANIC RANKINE CYCLE SYSTEMS
WO2017145057A1 (en) * 2016-02-25 2017-08-31 Turboden Spa Direct heat exchanger for organic rankine cycle systems

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