EP0044370B2 - Rotary kiln for the incineration of waste - Google Patents

Rotary kiln for the incineration of waste Download PDF

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Publication number
EP0044370B2
EP0044370B2 EP19800401081 EP80401081A EP0044370B2 EP 0044370 B2 EP0044370 B2 EP 0044370B2 EP 19800401081 EP19800401081 EP 19800401081 EP 80401081 A EP80401081 A EP 80401081A EP 0044370 B2 EP0044370 B2 EP 0044370B2
Authority
EP
European Patent Office
Prior art keywords
duct
outlet
combustion
chamber
inlet
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 - Lifetime
Application number
EP19800401081
Other languages
German (de)
French (fr)
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EP0044370B1 (en
EP0044370A1 (en
Inventor
Jean-Pierre Vanderpol
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Laurent Bouillet Industrie SA
Original Assignee
Laurent Bouillet Industrie SA
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Publication date
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Application filed by Laurent Bouillet Industrie SA filed Critical Laurent Bouillet Industrie SA
Priority to DE8080401081T priority Critical patent/DE3070831D1/en
Priority to EP19800401081 priority patent/EP0044370B2/en
Publication of EP0044370A1 publication Critical patent/EP0044370A1/en
Publication of EP0044370B1 publication Critical patent/EP0044370B1/en
Application granted granted Critical
Publication of EP0044370B2 publication Critical patent/EP0044370B2/en
Anticipated expiration legal-status Critical
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    • 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
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • 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
    • F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
    • F23G5/22—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums the drums being conically shaped

Definitions

  • the invention relates to rotary or oscillating ovens intended for the incineration of waste or for the thermal treatment of various industrial products.
  • the ovens to which the present invention relates comprise a rotary, elongated and inclined combustion chamber having an opening at its upper end, a fixed supply duct having an outlet for supplying the chamber with the product to be treated and a fixed exhaust duct having an inlet for removing gases from the combustion of the product from the chamber.
  • the object of the present invention is to produce a total counter-current throughout the length of the oven without the risk of causing combustion to start in the supply duct.
  • the invention provides a treatment or incineration oven with a main chamber with rotary movement, where the gases and the products circulate in total counter-current, being respectively extracted and introduced by separate openings in the mobile chamber.
  • the oven comprises a cell 1 which constitutes an inclined combustion chamber.
  • This rotating or oscillating cell is conical, cylindrotronconic or cylindrical.
  • the cell At its upper end, the cell has an opening 2 of circular section, obstructed by a fixed facade 3.
  • This fixed facade is pierced with flues 4 and 5 located side by side.
  • the flue 4 of square or rectangular shape, constitutes the outlet of a conduit 6 for supplying the chamber with the products to be treated, that is to say in the present example, the waste to be incinerated.
  • this waste descends by gravity from a hopper 7 and is pushed into the conduit 6 towards the outlet 4 by a push cylinder 8 (fig. 3).
  • a push cylinder 8 (fig. 3). Any other feeding system can be used according to the possibilities or the wishes.
  • the flue 5 in the form of a portion of a circle, constitutes the inlet of a gas duct 9 which connects the combustion chamber to an auxiliary chamber 10 where the combustion or the treatment of the gases ends, in known manner.
  • the conduit 9 has a speed bump 11 or equivalent means for creating a Venturi effect in the conduit.
  • the conduit 9 is constituted for example by a metal sheath provided with refractory and insulation.
  • An improved oven according to the invention has advantages of quality, cost price, reliability and versatility (possibility of treating products with variable calorific value in a wide range, for example 1100-6000, without runaway, or extinction) .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)

Description

L'invention concerne les fours tournants ou oscillants destinés à l'incinération de déchets ou au traitement thermique de divers produits industriels.The invention relates to rotary or oscillating ovens intended for the incineration of waste or for the thermal treatment of various industrial products.

Les fours auxquels se rapporte la présente invention comprennent une chambre de combustion rotative, allongée et inclinée présentant une ouverture à son extrémité haute un conduit d'alimentation fixe ayant une sortie pour alimenter la chambre avec le produit à traiter et un conduit d'évacuation fixe ayant une entrée pour évacuer de la chambre les gaz dégagés par la combustion du produit.The ovens to which the present invention relates comprise a rotary, elongated and inclined combustion chamber having an opening at its upper end, a fixed supply duct having an outlet for supplying the chamber with the product to be treated and a fixed exhaust duct having an inlet for removing gases from the combustion of the product from the chamber.

Un exemple d'un tel four est décrit dans le brevet FR-A-2 234 521. Le four décrit dans le brevet précité réalise déjà un certain contre-courant dans la chambre de combustion, mais ce contre-courant n'intéresse qu'une portion de la chambre de combustion. De plus, avant d'entrer dans le conduit d'évacuation, les gaz passent au-dessus des déchets qui se trouvent dans le conduit d'alimentation, ce qui peut provoquer un début de combustion dans le conduit d'alimentation.An example of such an oven is described in patent FR-A-2 234 521. The oven described in the aforementioned patent already produces a certain counter-current in the combustion chamber, but this counter-current is only of interest. a portion of the combustion chamber. In addition, before entering the exhaust duct, the gases pass over the waste which is in the supply duct, which can cause combustion to start in the supply duct.

Un autre exemple d'un tel four est décrit dans le brevet DE-A-1 551 848.Another example of such an oven is described in patent DE-A-1,551,848.

Le but de la présente invention est de réaliser un contre-courant total dans toute la longueur du four sans risque de provoquer un début de combustion dans le conduit d'alimentation.The object of the present invention is to produce a total counter-current throughout the length of the oven without the risk of causing combustion to start in the supply duct.

On y parvient, selon l'invention, en situant l'entrée du conduit d'évacuation de gaz et la sortie du conduit d'alimentation, séparément, dans une façade fixe à l'extrémité haute de la chambre de combustion.This is achieved, according to the invention, by locating the inlet of the gas discharge duct and the outlet of the supply duct, separately, in a fixed facade at the top end of the combustion chamber.

Autrement dit, l'invention fournit un four de traitement ou d'incinération à chambre principale à mouvement rotatif, où les gaz et les produits circulent à contre-courant total, étant respectivement extraits et introduits par des ouvertures séparées dans la chambre mobile.In other words, the invention provides a treatment or incineration oven with a main chamber with rotary movement, where the gases and the products circulate in total counter-current, being respectively extracted and introduced by separate openings in the mobile chamber.

On décrira ci-après une réalisation d'un four d'incinération perfectionné selon l'invention, en référence aux figures du dessin joint sur lequel, la description et les ligures faisant apparaître d'autres particularités de l'invention. Sur les figures:

  • la fig. 1 est une coupe longitudinale du four selon le plan A-A de la fig. 2;
  • la fig. 2 est une coupe selon le plan B-B de la fig. 1;
  • la fig. 3 est une coupe selon le plan C-C de la fig. 2, et
  • la fig. 4 est un schéma de l'ouverture du four où débouchent simultanément le conduit de produits et le conduit de gaz.
An embodiment of an improved incineration oven according to the invention will be described below, with reference to the figures of the attached drawing in which, the description and the figures showing other particular features of the invention. In the figures:
  • fig. 1 is a longitudinal section of the furnace according to the plane AA of FIG. 2;
  • fig. 2 is a section along the plane BB of FIG. 1;
  • fig. 3 is a section along the plane CC of FIG. 2, and
  • fig. 4 is a diagram of the opening of the oven where the product conduit and the gas conduit open simultaneously.

On ne décrira du four que les parties utiles à la compréhension de l'invention, puisque la conception générale d'un tel four est bien connue de l'homme de métier.The oven will only be described the parts which are useful for understanding the invention, since the general design of such an oven is well known to those skilled in the art.

Le four comporte une cellule 1 qui constitue une chambre de combustion inclinée. Cette cellule, tournante ou oscillante, est de forme conique, cylindrotronconique ou cylindrique.The oven comprises a cell 1 which constitutes an inclined combustion chamber. This rotating or oscillating cell is conical, cylindrotronconic or cylindrical.

A son extrémité supérieure, la cellule présente une ouverture 2 de section circulaire, obstruée par une façade fixe 3. Cette façade fixe est percée de carneaux 4 et 5 situés côte à côte.At its upper end, the cell has an opening 2 of circular section, obstructed by a fixed facade 3. This fixed facade is pierced with flues 4 and 5 located side by side.

Le carneau 4, de forme carrée ou rectangulaire, constitue la sortie d'un conduit 6 d'alimentation de la chambre avec les produits à traiter, c'est-à-dire dans l'exemple présent, les déchets à incinérer.The flue 4, of square or rectangular shape, constitutes the outlet of a conduit 6 for supplying the chamber with the products to be treated, that is to say in the present example, the waste to be incinerated.

De façon en soi connue, ces déchets descendent par gravité d'une trémie 7 et sont poussés dans le conduit 6 vers la sortie 4 par un vérin poussoir 8 (fig. 3). Tout autre système d'alimentation peut être utilisé selon les possibilités ou les desiderata.In a manner known per se, this waste descends by gravity from a hopper 7 and is pushed into the conduit 6 towards the outlet 4 by a push cylinder 8 (fig. 3). Any other feeding system can be used according to the possibilities or the wishes.

Le carneau 5, en forme de portion de cercle constitue l'entrée d'un conduit de gaz 9 qui relie la chambre de combustion vers une chambre auxiliaire 10 où s'achève, de façon en soi connue la combustion ou le traitement des gaz.The flue 5, in the form of a portion of a circle, constitutes the inlet of a gas duct 9 which connects the combustion chamber to an auxiliary chamber 10 where the combustion or the treatment of the gases ends, in known manner.

De préférence, le conduit 9 comporte un dos d'âne 11 ou moyen équivalent pour créer un effet de Venturi dans le conduit.Preferably, the conduit 9 has a speed bump 11 or equivalent means for creating a Venturi effect in the conduit.

Le conduit 9 est constitué par exemple par une gaine métallique garnie de réfractaire et d'isolant.The conduit 9 is constituted for example by a metal sheath provided with refractory and insulation.

Le fait que les carneaux 4 et 5 débouchent directement dans la chambre de combustion, par contraste avec une réalisation dans laquelle ils déboucheraient dans une pré-chambre communiquant par une ouverture avec la chambre de combustion, permet d'éviter certains inconvénients.

  • obstruction de l'entrée de la cellule mobile par les déchets;
  • contraintes thermiques détériorant rapidement la chambre fixe de prétraitement des produits;
  • accrochage de produits vitrifiés aux parois;
  • difficultés pour protéger les joints entre les parties fixes et les parties mobiles;
  • entraînement de produits non traités vers la chambre de post-combustion.
The fact that the flues 4 and 5 open directly into the combustion chamber, in contrast to an embodiment in which they would open into a pre-chamber communicating through an opening with the combustion chamber, makes it possible to avoid certain drawbacks.
  • obstruction of the entry of the mobile cell by the waste;
  • thermal stresses rapidly deteriorating the fixed product pre-treatment chamber;
  • hanging vitrified products on the walls;
  • difficulties in protecting the joints between the fixed parts and the moving parts;
  • entrainment of untreated products towards the post-combustion chamber.

Un four perfectionné selon l'invention présente des avantages de qualité, de prix de revient, de fiabilité et de versatilité (possibilité de traiter des produits à pouvoir calorifique variable dans une large gamme, par exemple 1100-6000, sans emballement, ni extinction).An improved oven according to the invention has advantages of quality, cost price, reliability and versatility (possibility of treating products with variable calorific value in a wide range, for example 1100-6000, without runaway, or extinction) .

Claims (5)

1. A kiln for the combustion of waste, comprising a rotary, elongate and inclined combustion chamber (1), having an opening at its upper end, a fixed feed duct (6) having an outlet (4) feeding the chamber with the product to be treated, a separate fixed outlet duct (9) having an inlet (5) for emptying the chamber of gases released by the combustion of the product, characterised in that the said inlet (5) and the said outlet (4) are separately positioned in a fixed facade (3) obstructing the said opening (2) of the combustion chamber, which protects the feed duct from the action of the said gases and permits avoidance of initiation of combustion in this duct.
2. A kiln according to claim 1, characterised in that the said inlet (5) and the said outlet (4) are positioned side by side.
3. A kiln according to claim 1 or claim 2, characterised in that the gas duct (9) has a hump (11) or other means for creating a Venturi effect in the duct.
4. A kiln according to any one of claims 1 to 3, characterised in that the outlet (4) has a square or rectangular form.
5. A kiln according to any one of claims 1 to 4, characterised in that the said inlet (5) has the form of a part of a circle.
EP19800401081 1980-07-22 1980-07-22 Rotary kiln for the incineration of waste Expired - Lifetime EP0044370B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8080401081T DE3070831D1 (en) 1980-07-22 1980-07-22 Rotary kiln for the incineration of waste or for the thermal treatment of industrial products
EP19800401081 EP0044370B2 (en) 1980-07-22 1980-07-22 Rotary kiln for the incineration of waste

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19800401081 EP0044370B2 (en) 1980-07-22 1980-07-22 Rotary kiln for the incineration of waste

Publications (3)

Publication Number Publication Date
EP0044370A1 EP0044370A1 (en) 1982-01-27
EP0044370B1 EP0044370B1 (en) 1985-07-03
EP0044370B2 true EP0044370B2 (en) 1991-04-10

Family

ID=8187385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800401081 Expired - Lifetime EP0044370B2 (en) 1980-07-22 1980-07-22 Rotary kiln for the incineration of waste

Country Status (2)

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EP (1) EP0044370B2 (en)
DE (1) DE3070831D1 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2234521A1 (en) * 1973-06-20 1975-01-17 Heliox Oscillating drum refuse incinerator - has air entry channels behind refractory lining composed of concrete blocks

Also Published As

Publication number Publication date
EP0044370B1 (en) 1985-07-03
DE3070831D1 (en) 1985-08-08
EP0044370A1 (en) 1982-01-27

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