EP0173628A2 - Incinerator for incinerating refuse - Google Patents

Incinerator for incinerating refuse Download PDF

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Publication number
EP0173628A2
EP0173628A2 EP85401691A EP85401691A EP0173628A2 EP 0173628 A2 EP0173628 A2 EP 0173628A2 EP 85401691 A EP85401691 A EP 85401691A EP 85401691 A EP85401691 A EP 85401691A EP 0173628 A2 EP0173628 A2 EP 0173628A2
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EP
European Patent Office
Prior art keywords
combustion chamber
post
air
smoke
combustion
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Granted
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EP85401691A
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German (de)
French (fr)
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EP0173628A3 (en
EP0173628B1 (en
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Christian Gérard Huret
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Individual
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Individual
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Priority to AT85401691T priority Critical patent/ATE46957T1/en
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Publication of EP0173628B1 publication Critical patent/EP0173628B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F23L9/04—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air beyond the fire, i.e. nearer the smoke outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage

Definitions

  • the present invention relates to a process for the incineration of waste, as well as an incineration furnace for the implementation of this process.
  • the fuel consumption is significantly reduced, the dust entrainment is low and the fumes are little or not colored.
  • the combustion time is however significantly longer than in the first mode. In addition, there are sometimes unburnt remains due to the insufficient combustion temperature.
  • the present invention relates to a method which makes it possible to benefit from the advantages of the two above-mentioned operating modes, while avoiding their disadvantages.
  • the process which it relates is characterized in that it consists in subjecting the waste to be incinerated, in a combustion chamber, first to a pyrolysis carried out at a relatively low temperature in the presence of a small quantity. of air called "primary air", then combustion carried out at a high temperature in the presence of an excess of primary air.
  • the same combustion chamber can be used to carry out incineration according to a cycle in two main phases.
  • the present invention also relates to an incineration oven for the implementation of this process, this oven being of the type comprising a combustion chamber comprising a door for loading waste and means for introducing primary air into it, a sheath flue communicating with the combustion chamber and having means for preventing the passage of the dust entrained by the fumes as well as means for supplying a supplement r air said "secondary air”, and a post-combustion chamber connected to the combustion chamber by means of the smoke sheath, the post-combustion chamber comprising at least one burner and means for introducing a stream of combustion air called "tertiary air" into it.
  • the present invention proposes to remedy this drawback by providing an incineration oven in which the means for preventing the passage of dust are constituted by the means for supplying secondary air, which themselves are constituted by nozzles opening into the smoke duct in order to inject the secondary air therein against the current with respect to the direction of circulation of the smoke, the number and the spacing of the nozzles being such that the entire section of the smoke duct is interested in the secondary air curtain formed.
  • the secondary air injected into the flue gas duct enriches the fumes from the combustion chamber with oxygen, while preventing dust from entering the post-combustion chamber.
  • the respective directions of circulation of the secondary air and the fumes in the flue gas duct form an obtuse angle of between 100 ° and 140 °.
  • the post-combustion chamber and the smoke duct constitute an assembly mounted to pivot about the axis of the latter.
  • the incineration oven that can be seen in the drawings comprises a combustion chamber 1 furnished with insulating and refractory materials.
  • the combustion chamber is equipped with a burner 2 used to initiate or maintain the combustion of waste and nozzles 3 allowing the injection of primary air. It can be of parallelepipedic or cylindrical shape, its major axis being preferably horizontal.
  • a sealed loading door 4 allows waste to be introduced into the hearth 5.
  • the combustion fumes 6 are evacuated by passing through a smoke sheath 7 which is formed in the wall opposite to the loading door 4 and into which the secondary air is injected by a series of nozzles 8 oriented so that the secondary air jet forms an obtuse angle with the fumes.
  • the smoke duct 7 connects the combustion chamber 1 to a post-combustion chamber 9 which is cylindrical in shape and is lined with insulating and refractory materials.
  • the post-combustion chamber is of large volume so that the fumes stay there long enough to be completely oxidized and decomposed. Its volume is calculated so that the minimum residence time is 0.6 seconds.
  • At least one burner 11 is provided to bring or maintain the post-combustion chamber at a temperature sufficient to completely oxidize the fumes, destroy all the combustible particles and crack the organic molecules. This burner directs its flame tangentially into the post-combustion chamber.
  • Tertiary air intended to supply the necessary oxygen supplement and to entrain the fumes in a helical movement is injected into the post-combustion chamber 9 on the one hand by a series of nozzles 10 arranged along a generator and opening tangentially in the chamber 9, and on the other hand by a nozzle 12 opening axially at one of the ends of the post-combustion chamber.
  • the fumes entrained in the post- combustion in a helical movement are directed towards a chimney 13 provided at the other end of the post-combustion chamber. It will be noted here that the flow rate of the tertiary air injected through the nozzles 10 and 12 is adjustable.
  • the inclination of the main axis of the post-combustion chamber can be adjusted since the latter constitutes, with the smoke duct 7, an assembly mounted to pivot around the axis of said duct.
  • the oven according to the invention makes it possible to incinerate waste in two phases, these being subjected in the combustion chamber 1, first of all .pyrolysis carried out at a relatively low temperature in the presence of a small quantity of primary air, then combustion carried out at a high temperature in the presence of an excess of primary air.
  • the nozzles 8 projecting the secondary air prevent the dust formed in the combustion chamber 1 from going into the post-combustion chamber when the primary air flow is increased.
  • the secondary air is injected against the smoke: the directions of circulation of the secondary air and the smoke respectively in the smoke duct 7 form an obtuse angle preferably between 100 ° and 140 °.
  • the flow and speed of the secondary air and the repetition of the nozzles 8 are such that the air curtain thus created involves the entire section of the smoke duct.
  • the fumes leaving the combustion chamber 1 penetrate tangentially into the post-combustion chamber 9 which is lined with insulating and refractory materials and which is preferably produced with a large volume. They go towards the chimney 13, in a helical movement under the joint action of the tertiary air injected by the nozzles 10 and the nozzle 12 and the flame of the burner 11 which is oriented tangentially in the post-combustion chamber.
  • the incineration oven according to the invention is particularly suitable for the destruction without odors, visible smoke or nuisance, of all combustible waste and, in particular, household, hospital or industrial waste.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Incineration Of Waste (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Abstract

1. An incinerator for incinerating refuse, comprising a combustion chamber (1) with a door (4) for charging the refuse and means for feeding primary air therein, a fume duct (7) in communication with the combustion chamber (1) and including means for preventing the passage of the dust entrained by the fumes as well as means for delivering secondary air, and a post-combustion chamber (9) connected to the combustion chamber (1) through the fume duct (7), the post-combustion chamber (9) including at least one burner (11), a chimney (13) provided at one end thereof, and nozzles (10) for tangentially feeding a tertiary combustion air flow, characterized in that the nozzles (10) are distributed along a line parallel to the major axis of the post-combustion chamber (9), and in that a further nozzle (12) is provided for feeding tertiary air in the postcombustion chamber (9), said further nozzle opening axially at the end of the post-combustion chamber (9) which is opposite to the chimney (13).

Description

La présente invention concerne un procédé pour l'incinération des déchets, ainsi qu'un four d'incinération pour la mise en oeuvre de ce procédé.The present invention relates to a process for the incineration of waste, as well as an incineration furnace for the implementation of this process.

On connaît actuellement des fours d'incinération fonctionnant, les uns à haute température avec un important excès d'air comburant, et les autres par effet pyrolytique, c'est-à-dire à une température relativement basse et avec une quantité restreinte d'air comburant.Currently operating incineration furnaces are known, some at high temperature with a large excess of combustion air, and others by pyrolytic effect, that is to say at a relatively low temperature and with a limited amount of combustion air.

Dans le premier mode de fonctionnement, la destruction des déchets est très rapide et complète mais au prix d'une consommation élevée de combustible d'appoint. Il se produit en outre des envolées de poussières souvent accompagnées de fumées colorées lors de la destruction de déchets de pouvoir calorifique inférieur (PCI) élevé.In the first operating mode, the destruction of the waste is very rapid and complete, but at the cost of a high consumption of auxiliary fuel. There is also a surge of dust, often accompanied by colored smoke, during the destruction of wastes of low calorific value (PCI).

Dans le second mode de fonctionnement, la consommation de combustible est sensiblement réduite, l'entraînement de poussières est faible et les fumées sont peu ou pas colorées. La durée de combustion est toutefois sensiblement plus longue que dans le premier mode. En outre, il subsiste parfois des imbrûlés dus à la température de combusion insuffisante.In the second operating mode, the fuel consumption is significantly reduced, the dust entrainment is low and the fumes are little or not colored. The combustion time is however significantly longer than in the first mode. In addition, there are sometimes unburnt remains due to the insufficient combustion temperature.

La présente invention concerne un procédé qui permet de bénéficier des avantages des deux modes de fonctionnement précités, tout en évitant leurs inconvénients. Pour ce faire, le procédé qu'elle concerne se caractérise en ce qu'il consiste à soumettre les déchets à incinérer, dans une chambre de combustion, d'abord à une pyrolyse réalisée à une température relativement basse en présence d'une faible quantité d'air dit "air primaire", puis à une combustion réalisée à une température élevée en présence d'un excès d'air primaire.The present invention relates to a method which makes it possible to benefit from the advantages of the two above-mentioned operating modes, while avoiding their disadvantages. To do this, the process which it relates is characterized in that it consists in subjecting the waste to be incinerated, in a combustion chamber, first to a pyrolysis carried out at a relatively low temperature in the presence of a small quantity. of air called "primary air", then combustion carried out at a high temperature in the presence of an excess of primary air.

Grâce à ce procédé, la même chambre de combustion peut être utilisée pour réaliser l'incinération selon un cycle en deux phases principales.Thanks to this process, the same combustion chamber can be used to carry out incineration according to a cycle in two main phases.

Tout d'abord, après introduction des déchets et allumage, alors que les matières volatiles et facilement combustibles sont encore abondantes, la combustion a lieu par effet pyrolytique, à une température relativement basse et en présence d'une faible quantité d'air primaire. Puis, lorsque la combustion tend à ralentir, la combustion a lieu à haute température, une quantité suffisante d'air primaire étant injectée pour l'activer. Ainsi., tout en bénéficiant des économies de combustible grâce à l'effet pyrolytique, on obtient en fin de cycle une destruction totale et rapide de toutes les matières combustibles.First of all, after introduction of the waste and ignition, while volatile and easily combustible materials are still abundant, combustion takes place by pyrolytic effect, at a relatively low temperature and in the presence of a small quantity of primary air. Then, when the combustion tends to slow down, the combustion takes place at high temperature, a sufficient quantity of primary air being injected to activate it. Thus, while benefiting from fuel savings thanks to the pyrolytic effect, a complete and rapid destruction of all combustible materials is obtained at the end of the cycle.

La présente invention concerne également un four d'incinération pour la mise en oeuvre de ce procédé, ce four étant du type comprenant une chambre de combustion comportant une porte pour le chargement des déchets et des moyens pour y introduire l'air primaire, une gaine de fumées communiquant avec la chambre de combustion et comportant des moyens pour empêcher le passage des poussières entraînées par les fumées ainsi que des moyens pour délivrer un supplément drair dit '"air secondaire", et une chambre de post-combustion reliée à la chambre de combustion par l'intermédiaire de la gaine de fumées, la chambre de post-combustion comportant au moins un brûleur et des moyens pour y introduire un courant d'air de combustion dit "air tertiaire".The present invention also relates to an incineration oven for the implementation of this process, this oven being of the type comprising a combustion chamber comprising a door for loading waste and means for introducing primary air into it, a sheath flue communicating with the combustion chamber and having means for preventing the passage of the dust entrained by the fumes as well as means for supplying a supplement r air said "secondary air", and a post-combustion chamber connected to the combustion chamber by means of the smoke sheath, the post-combustion chamber comprising at least one burner and means for introducing a stream of combustion air called "tertiary air" into it.

US-A-3 664 277 décrit un four de ce type dont les moyens pour empêcher le passage des poussières sont constitués par un volet obturant partiellement la gaine de fumées. Ce volet a toutefois l'inconvénient d'être peu efficace car il n'intéresse qu'une partie limitée de la section de la gaine de fumées.US-A-3,664,277 describes an oven of this type, the means for preventing the passage of dust are constituted by a flap partially sealing the smoke duct. This component, however, has the disadvantage of being ineffective because it only concerns a limited part of the section of the smoke duct.

La présente invention se propose de remédier à cet inconvénient en réalisant un four d'incinération dans lequel les moyens pour empêcher le passage des poussières sont constitués par les moyens pour délivrer l'air secondaire, lesquels sont eux-mêmes constitués par des buses débouchant dans la gaine de fumées de manière à y injecter l'air secondaire à contre-courant par rapport à la direction de circulation des fumées, le nombre et l'espacement des buses étant tels que toute la section de la gaine de fumées est intéressée par le rideau d'air secondaire formé.The present invention proposes to remedy this drawback by providing an incineration oven in which the means for preventing the passage of dust are constituted by the means for supplying secondary air, which themselves are constituted by nozzles opening into the smoke duct in order to inject the secondary air therein against the current with respect to the direction of circulation of the smoke, the number and the spacing of the nozzles being such that the entire section of the smoke duct is interested in the secondary air curtain formed.

L'air secondaire injecté dans la gaine de fumées enrichit en oxygène les fumées provenant de la chambre de combustion, tout en empêchant les poussières de se diriger dans la chambre de post-combustion.The secondary air injected into the flue gas duct enriches the fumes from the combustion chamber with oxygen, while preventing dust from entering the post-combustion chamber.

On conçoit donc aisément que l'orientation particulière des buses dans la gaine de fumées permet une amélioration des performances du four décrit dans US-A-3 664 277, ainsi qu'une simplification de la structure de ce four.It is therefore easily understood that the particular orientation of the nozzles in the smoke duct allows an improvement in the performance of the oven described in US-A-3,664,277, as well as a simplification of the structure of this oven.

De préférence, les directions de circulation respectives de l'air secondaire et des fumées dans la gaine de fumées forment un angle obtus compris entre 100° et 140°.Preferably, the respective directions of circulation of the secondary air and the fumes in the flue gas duct form an obtuse angle of between 100 ° and 140 °.

Selon un mode de réalisation particulier, la chambre de post-combustion et la gaine de fumées constituent un ensemble monté pivotant autour de l'axe de cette dernière.According to a particular embodiment, the post-combustion chamber and the smoke duct constitute an assembly mounted to pivot about the axis of the latter.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description qui sera donnée ci-après en référence au dessin annexé dans lequel :

  • . la figure 1 est une coupe longitudinale schématique d'un four d'incinération conforme à l'invention, et
  • . la figure 2 est une vue de face schématique du four visible sur la figure 1, la chambre de post-combustion étant représentée en traits pleins dans sa position verticale et en traits mixtes dans sa position horizontale.
Other features and advantages of the present invention will emerge from the description which will be given below with reference to the appended drawing in which:
  • . FIG. 1 is a schematic longitudinal section of an incineration oven according to the invention, and
  • . Figure 2 is a schematic front view of the oven visible in Figure 1, the post-combustion chamber being shown in solid lines in its vertical position and in phantom in its horizontal position.

Le four d'incinération que l'on peut voir sur les dessins comprend une chambre de combustion 1 garnie de matériaux isolants et réfractaires. La chambre de combustion est équipée d'un brûleur 2 servant à amorcer ou à entretenir la combustion des déchets et de buses 3 permettant l'injection d'air primaire. Elle peut être de forme parallélépipèdique ou cylindrique, son grand axe étant de préférence horizontal.The incineration oven that can be seen in the drawings comprises a combustion chamber 1 furnished with insulating and refractory materials. The combustion chamber is equipped with a burner 2 used to initiate or maintain the combustion of waste and nozzles 3 allowing the injection of primary air. It can be of parallelepipedic or cylindrical shape, its major axis being preferably horizontal.

Une porte de chargement hermétique 4 permet l'introduction des déchets dans le foyer 5.A sealed loading door 4 allows waste to be introduced into the hearth 5.

Les fumées de combustion 6 sont évacuées en passant par une gaine de fumées 7 qui est ménagée dans la paroi opposée à la porte de chargement 4 et dans laquelle l'air- secondaire est injecté par une série de buses 8 orientées de façon à ce que le jet d'air secondaire forme un angle obtus avec les fumées.The combustion fumes 6 are evacuated by passing through a smoke sheath 7 which is formed in the wall opposite to the loading door 4 and into which the secondary air is injected by a series of nozzles 8 oriented so that the secondary air jet forms an obtuse angle with the fumes.

La gaine de fumées 7 relie la chambre de combustion 1 à une chambre de post-combustion 9 qui est de forme cylindrique et est garnie de matériaux isolants et réfractaires. La chambre de post-combustion est de grand volume afin que les fumées y séjournent suffisamment longtemps pour être totalement oxydées et décomposées. Son volume est calculé pour que le temps de séjour minimum soit de 0,6 seconde.The smoke duct 7 connects the combustion chamber 1 to a post-combustion chamber 9 which is cylindrical in shape and is lined with insulating and refractory materials. The post-combustion chamber is of large volume so that the fumes stay there long enough to be completely oxidized and decomposed. Its volume is calculated so that the minimum residence time is 0.6 seconds.

Au moins un brûleur 11 est prévu pour porter ou maintenir la chambre de post-combustion à une température suffisante pour oxyder totalement les fumées, détruire toutes les particules combustibles et craquer les molécules organiques. Ce brûleur dirige sa flamme tangentiellement dans la chambre de post-combustion.At least one burner 11 is provided to bring or maintain the post-combustion chamber at a temperature sufficient to completely oxidize the fumes, destroy all the combustible particles and crack the organic molecules. This burner directs its flame tangentially into the post-combustion chamber.

De l'air tertiaire destiné à apporter le complément d'oxygène nécessaire et à entraîner les fumées suivant un mouvement hélicoïdal est injecté dans la chambre de post-combustion 9 d'une part par une série de buses 10 disposées le long d'une génératrice et débouchant tangentiellement dans la chambre 9, et d'autre part par une buse 12 débouchant axialement à l'une des extrémités de la chambre de post-combustion. Les fumées entraînées dans la chambre de post-combustion selon un mouvement hélicoïdal sont dirigées vers une cheminée 13 prévue à l'autre extrémité de la chambre de post-combustion. On notera ici que le débit de l'air tertiaire injecté par les buses 10 et 12 est réglable.Tertiary air intended to supply the necessary oxygen supplement and to entrain the fumes in a helical movement is injected into the post-combustion chamber 9 on the one hand by a series of nozzles 10 arranged along a generator and opening tangentially in the chamber 9, and on the other hand by a nozzle 12 opening axially at one of the ends of the post-combustion chamber. The fumes entrained in the post- combustion in a helical movement are directed towards a chimney 13 provided at the other end of the post-combustion chamber. It will be noted here that the flow rate of the tertiary air injected through the nozzles 10 and 12 is adjustable.

On notera par ailleurs que l'inclinaison de l'axe principal de la chambre de post-combustion peut être réglé puisque celle-ci constitue avec la gaine de fumées 7 un ensemble monté pivotant autour de l'axe de ladite gaine.It will also be noted that the inclination of the main axis of the post-combustion chamber can be adjusted since the latter constitutes, with the smoke duct 7, an assembly mounted to pivot around the axis of said duct.

Le four selon l'invention permet de réaliser l'incinération des déchets en deux phases, ceux-ci étant soumis dans la chambre de combustion 1, d'abord à une .pyrolyse réalisée à une température relativement basse en présence d'une faible quantité d'air primaire, puis à une combustion réalisée à une température élevée en présence d'un excès d'air primaire.The oven according to the invention makes it possible to incinerate waste in two phases, these being subjected in the combustion chamber 1, first of all .pyrolysis carried out at a relatively low temperature in the presence of a small quantity of primary air, then combustion carried out at a high temperature in the presence of an excess of primary air.

Les buses 8 projetant l'air secondaire empêchent les poussières formées dans la chambre de combustion 1 de se diriger dans la chambre de post-combustion lorsqu'on augmente le débit d'air primaire.The nozzles 8 projecting the secondary air prevent the dust formed in the combustion chamber 1 from going into the post-combustion chamber when the primary air flow is increased.

L'air secondaire est injecté à contre-courant des fumées : les directions de circulation respectivement de l'air secondaire et des fumées dans la gaine de fumées 7 forment un angle obtus compris de préférence entre 100° et 140°. De plus, le débit et la vitesse de l'air secondaire et la répétition des buses 8 sont tels que le rideau d'air ainsi créé intéresse toute la section de la gaine de fumées.The secondary air is injected against the smoke: the directions of circulation of the secondary air and the smoke respectively in the smoke duct 7 form an obtuse angle preferably between 100 ° and 140 °. In addition, the flow and speed of the secondary air and the repetition of the nozzles 8 are such that the air curtain thus created involves the entire section of the smoke duct.

Les fumées sortant de la chambre de combustion 1 pénètrent tangentiellement dans la chambre de post-combustion 9 qui est garnie de matériaux isolants et réfractaires et qui est réalisée de préférence avec un grand volume. Elles se dirigent vers la cheminée 13, selon un mouvement hélicoïdal sous l'action conjointe de l'air tertiaire injecté par les buses 10 et la buse 12 et de la flamme du brûleur 11 qui est orientée tangentiellement dans la chambre de post-combustion.The fumes leaving the combustion chamber 1 penetrate tangentially into the post-combustion chamber 9 which is lined with insulating and refractory materials and which is preferably produced with a large volume. They go towards the chimney 13, in a helical movement under the joint action of the tertiary air injected by the nozzles 10 and the nozzle 12 and the flame of the burner 11 which is oriented tangentially in the post-combustion chamber.

Le four d'incinération selon l'invention est particulièrement adapté à la destruction sans odeurs, fumées visibles ou nuisances, de tous déchets combustibles et, en particulier, des déchets ménagers, hospitaliers ou industriels.The incineration oven according to the invention is particularly suitable for the destruction without odors, visible smoke or nuisance, of all combustible waste and, in particular, household, hospital or industrial waste.

Claims (7)

1. Procédé pour l'incinération des déchets, caractérisé en ce qu'il consiste à soumettre les déchets à incinérer, dans une chambre de combustion (1), d'abord à une pyrolyse réalisée à une température relativement basse en présence d'une faible quantité d'air dit "air primaire", puis à une combustion réalisée à une température élevée en présence d'un excès d'air primaire.1. A method for incinerating waste, characterized in that it consists in subjecting the waste to be incinerated, in a combustion chamber (1), first to a pyrolysis carried out at a relatively low temperature in the presence of a small amount of air called "primary air", then combustion carried out at a high temperature in the presence of an excess of primary air. 2. Four d'incinération pour la mise en oeuvre du procédé selon la revendication 1, du type comprenant une chambre de combustion (1) comportant une porte (4) pour le chargement des déchets et des moyens pour y introduire l'air primaire, une gaine de fumées (7) communiquant avec la chambre de combustion (1) et comportant des moyens pour empêcher le passage des poussières entraînées par les fumées ainsi que des moyens pour délivrer un supplément d'air dit "air secondaire", et une chambre de post-combustion (9) reliée à la chambre de combustion (1) par l'intermédiaire de la gaine de fumées (7), la chambre de post-combustion (9) comportant au moins un brûleur (11) et des moyens pour y introduire un courant d'air de combustion dit "air tertiaire", caractérisé en ce que les moyens pour empêcher le passage des poussières sont constitués par les moyens pour délivrer l'air secondaire, lesquels sont eux-mêmes constitués par des buses (8,) débouchant dans la gaine de fumées (7) de manière à y injecter l'air secondaire à contre-courant par rapport à la direction de circulation des fumées, le nombre et l'espacement des buses (8) étant tels que toute la section de la gaine de fumées (7) est intéressée par le rideau d'air secondaire formé.2. Incineration oven for implementing the method according to claim 1, of the type comprising a combustion chamber (1) comprising a door (4) for loading waste and means for introducing primary air therein, a smoke duct (7) communicating with the combustion chamber (1) and comprising means for preventing the passage of the dust entrained by the smoke as well as means for delivering additional air called "secondary air", and a chamber afterburner (9) connected to the combustion chamber (1) via the smoke duct (7), the afterburner chamber (9) comprising at least one burner (11) and means for introduce a combustion air stream called "tertiary air" into it, characterized in that the means for preventing the passage of dust are constituted by the means for supplying secondary air, which themselves are constituted by nozzles (8 ,) opening into the smoke duct (7) so as to inje the secondary air against the current with respect to the direction of circulation of the smoke, the number and spacing of the nozzles (8) being such that the entire section of the smoke duct (7) is concerned with the curtain d secondary air formed. 3. Four d'incinération selon la revendication 2, caractérisé en ce que les directions de circulation respectives de l'air secondaire et des fumées dans la gaine de fumées (7) forment un angle obtus compris entre 100° et 140°.3. Incineration oven according to claim 2, characterized in that the respective directions of circulation of the secondary air and the fumes in the flue gas duct (7) form an obtuse angle of between 100 ° and 140 °. 4. Four d'incinération selon la revendication 2 ou 3, caractérisé en ce que la chambre de post-combustion (9) et la gaine de fumées (7) constituent un ensemble monté pivotant autour de l'axe de cette dernière.4. Incineration oven according to claim 2 or 3, characterized in that the post-combustion chamber (9) and the smoke sheath (7) constitute an assembly pivotally mounted about the axis of the latter. 5. Four d'incinération selon l'une quelconque des revendications 2 à 4, caractérisé en ce que la gaine de fumées (7) et le brûleur (11) de la chambre de post-combustion débouchent tangentiellement dans la chambre de post-combustion (9).5. Incineration oven according to any one of claims 2 to 4, characterized in that the smoke sheath (7) and the burner (11) of the post-combustion chamber open tangentially in the post-combustion chamber (9). 6. Four d'incinération selon l'une quelconque des revendications 2 à 5, caractérisé en ce que les moyens pour introduire l'air tertiaire dans la chambre de post-combustion (9) sont constitués par des buses (10) débouchant tangentiellement dans cette dernière, ces buses étant réparties le long d'une ligne parallèle à l'axe principal de la chambre de post-combustion (9), ainsi que par une buse (12) débouchant axialement à l'une des extrémités de la chambre de post-combustion (9), les fumées parvenant dans la chambre de post-combustion (9) étant ainsi entraînées selon un mouvement hélicoïdal vers une cheminée (13) prévue à l'autre extrémité de la chambre de post-combustion (9).6. Incineration oven according to any one of claims 2 to 5, characterized in that the means for introducing tertiary air into the post-combustion chamber (9) consist of nozzles (10) opening tangentially into the latter, these nozzles being distributed along a line parallel to the main axis of the post-combustion chamber (9), as well as by a nozzle (12) opening axially at one end of the post-combustion chamber (9), the fumes reaching the chamber post-combustion (9) being thus driven in a helical movement towards a chimney (13) provided at the other end of the post-combustion chamber (9). 7. Four d'incinération selon l'une quelconque des revendications 2 à 6, caractérisé en ce que le volume de la chambre de post-combustion (9) est tel que le temps de séjour des fumées y soit d'au moins 0,6 seconde.7. Incineration oven according to any one of claims 2 to 6, characterized in that the volume of the post-combustion chamber (9) is such that the residence time of the fumes is there at least 0, 6 seconds.
EP85401691A 1984-08-30 1985-08-28 Incinerator for incinerating refuse Expired EP0173628B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85401691T ATE46957T1 (en) 1984-08-30 1985-08-28 FURNACE FOR INCINERATION OF WASTE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8413625 1984-08-30
FR8413625A FR2569826B1 (en) 1984-08-30 1984-08-30 INCINERATOR-PYROLYZER

Publications (3)

Publication Number Publication Date
EP0173628A2 true EP0173628A2 (en) 1986-03-05
EP0173628A3 EP0173628A3 (en) 1987-09-02
EP0173628B1 EP0173628B1 (en) 1989-10-04

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ID=9307430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85401691A Expired EP0173628B1 (en) 1984-08-30 1985-08-28 Incinerator for incinerating refuse

Country Status (4)

Country Link
EP (1) EP0173628B1 (en)
AT (1) ATE46957T1 (en)
DE (1) DE3573464D1 (en)
FR (1) FR2569826B1 (en)

Cited By (9)

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Publication number Priority date Publication date Assignee Title
GB2220255A (en) * 1988-05-13 1990-01-04 Heinz Hoelter A method of, and apparatus for cooling and keeping clean the roof of a coke oven
GB2227084A (en) * 1989-01-17 1990-07-18 Cbr Fabrications Limited Stove with afterburner
WO1991000476A1 (en) * 1989-07-05 1991-01-10 Norbert Harlander Secondary-burner furnace installation for solid fuels
FR2649782A1 (en) * 1989-07-12 1991-01-18 Huret Christian Incineration process and furnace for implementing it
EP0426471A2 (en) * 1989-11-02 1991-05-08 Entech, Inc. Municipal waste thermal oxidation system
US5095829A (en) * 1989-11-07 1992-03-17 Nevels Leonardus M M Method for combusting multifarious waste material, and an oven to be used thereby
WO1998003250A1 (en) * 1996-07-18 1998-01-29 Hoelter Heinz Process for treating waste gases produced in an organic waste incineration plant
US6439135B1 (en) * 1997-11-25 2002-08-27 International Environmental Technologies, Inc. Organic waste gasification processing and the production of alternative energy sources
US6938562B2 (en) 2002-05-17 2005-09-06 Senreq, Llc Apparatus for waste gasification

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4007581A1 (en) * 1990-03-09 1991-09-12 Ackermann Tech Anlagen Masch Installation for treating wood waste before incineration - has screw conveyor to deliver waste to primary combustion chamber

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US3664277A (en) * 1970-07-31 1972-05-23 Carborundum Co On-site incinerator
FR2213706A5 (en) * 1973-01-09 1974-08-02 Air Preheater
FR2215678A2 (en) * 1965-12-01 1974-08-23 Lees Hall Et Sons Ltd Scrap metal recovery furnace - for burning off insulation from electric cables
CH579237A5 (en) * 1973-06-01 1976-08-31 Barkhuus Per W Incinerator for domestic refuse - with preheated secondary air provided under pressure
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US2869487A (en) * 1955-08-25 1959-01-20 Silent Glow Oil Burner Corp Incinerators
FR2215678A2 (en) * 1965-12-01 1974-08-23 Lees Hall Et Sons Ltd Scrap metal recovery furnace - for burning off insulation from electric cables
US3664277A (en) * 1970-07-31 1972-05-23 Carborundum Co On-site incinerator
FR2213706A5 (en) * 1973-01-09 1974-08-02 Air Preheater
CH579237A5 (en) * 1973-06-01 1976-08-31 Barkhuus Per W Incinerator for domestic refuse - with preheated secondary air provided under pressure
US4213404A (en) * 1978-11-09 1980-07-22 Energy Alternatives, Inc. Solid refuse furnace

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220255B (en) * 1988-05-13 1992-01-02 Heinz Hoelter A method of,and apparatus for cooling and keeping clean the roof of a coke oven
GB2220255A (en) * 1988-05-13 1990-01-04 Heinz Hoelter A method of, and apparatus for cooling and keeping clean the roof of a coke oven
GB2227084B (en) * 1989-01-17 1993-01-20 Cbr Fabrications Limited Wood waste burners
GB2227084A (en) * 1989-01-17 1990-07-18 Cbr Fabrications Limited Stove with afterburner
WO1991000476A1 (en) * 1989-07-05 1991-01-10 Norbert Harlander Secondary-burner furnace installation for solid fuels
FR2649782A1 (en) * 1989-07-12 1991-01-18 Huret Christian Incineration process and furnace for implementing it
EP0426471A2 (en) * 1989-11-02 1991-05-08 Entech, Inc. Municipal waste thermal oxidation system
EP0426471A3 (en) * 1989-11-02 1991-10-09 Entech, Inc. Municipal waste thermal oxidation system
US5095829A (en) * 1989-11-07 1992-03-17 Nevels Leonardus M M Method for combusting multifarious waste material, and an oven to be used thereby
EP0486728A1 (en) * 1989-11-07 1992-05-27 Leonardus Mathijs Marie Nevels A method for combusting multifarious waste material, an oven to be used thereby, as well as an universal waste combustion system with a number of such ovens
WO1998003250A1 (en) * 1996-07-18 1998-01-29 Hoelter Heinz Process for treating waste gases produced in an organic waste incineration plant
AU736661B2 (en) * 1996-07-18 2001-08-02 Heinz Holter Process for treating waste gases produced in an organic waste incineration plant
US6439135B1 (en) * 1997-11-25 2002-08-27 International Environmental Technologies, Inc. Organic waste gasification processing and the production of alternative energy sources
US6938562B2 (en) 2002-05-17 2005-09-06 Senreq, Llc Apparatus for waste gasification

Also Published As

Publication number Publication date
DE3573464D1 (en) 1989-11-09
FR2569826B1 (en) 1989-06-16
FR2569826A1 (en) 1986-03-07
ATE46957T1 (en) 1989-10-15
EP0173628A3 (en) 1987-09-02
EP0173628B1 (en) 1989-10-04

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