EP0674134B1 - Procédé de combustion pour matériaux pulvérulents - Google Patents

Procédé de combustion pour matériaux pulvérulents Download PDF

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Publication number
EP0674134B1
EP0674134B1 EP95103739A EP95103739A EP0674134B1 EP 0674134 B1 EP0674134 B1 EP 0674134B1 EP 95103739 A EP95103739 A EP 95103739A EP 95103739 A EP95103739 A EP 95103739A EP 0674134 B1 EP0674134 B1 EP 0674134B1
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EP
European Patent Office
Prior art keywords
combustion
air
inlet
combustion chamber
secondary air
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
EP95103739A
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German (de)
English (en)
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EP0674134A1 (fr
Inventor
Sedat Dipl.-Ing. Temelli
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.)
Awg Abfallwirtschaftsgesellschaft Wuppertal mbH
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Awg Abfallwirtschaftsgesellschaft Wuppertal mbH
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Priority to EP98105588A priority Critical patent/EP0853215A3/fr
Publication of EP0674134A1 publication Critical patent/EP0674134A1/fr
Application granted granted Critical
Publication of EP0674134B1 publication Critical patent/EP0674134B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • 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 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/02—Disposition of air supply not passing through burner
    • 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 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/006—Combustion apparatus characterised by the shape of the combustion chamber the chamber being arranged for cyclonic combustion
    • F23C3/008—Combustion apparatus characterised by the shape of the combustion chamber the chamber being arranged for cyclonic combustion for pulverulent fuel
    • 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 
    • F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
    • F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
    • 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
    • F23G5/32—Incineration of waste; Incinerator constructions; Details, accessories or control therefor the waste being subjected to a whirling movement, e.g. cyclonic incinerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • F23M5/085—Cooling thereof; Tube walls using air or other gas as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00014—Pilot burners specially adapted for ignition of main burners in furnaces or gas turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/80—Shredding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2205/00—Waste feed arrangements
    • F23G2205/20—Waste feed arrangements using airblast or pneumatic feeding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/40—Supplementary heat supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/12—Sludge, slurries or mixtures of liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/30—Solid combustion residues, e.g. bottom or flyash
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/50001—Combination of two or more furnaces

Definitions

  • the present invention relates to a method for burning of dusty materials, especially with Activated coke dust contaminated with pollutants from filter systems, Sewage sludge dust and the like.
  • Hard coal active coke is generally used for denitrification, while brown coal coke (hearth furnace active coke HOK) is generally used for the other substances or compounds.
  • PCB PCT, dioxins and furans, which occur mainly in flue gases from waste incineration plants, such activated coke filters are currently the only safe separation option. Because the partially extremely low pollutant limit values stipulated by legal provisions (in particular the Federal Immission Control Act) can hardly be achieved by firing technology alone. For dioxins and furans in particular, emission limit values of ⁇ 0.1 ng / m 3 must be observed. There are also similarly low limit values for other pollutants (e.g. heavy metals, polychlorinated biphenyls (PCB), polychlorinated terphenyls (PCT) as precursors of dioxins and furans).
  • pollutants e.g. heavy metals, polychlorinated biphenyls (PCB), polychlorinated terphenyls (PCT) as precursors of dioxi
  • EP-A-0 409 037 describes a different combustion chamber in that than doing no counterflow of primary and Secondary air, but only rectified, moving towards of an output described swirling flows are.
  • this publication is also not concerned with the special problem of thermal destruction of Pollutants.
  • This publication describes one initially substoichiometric combustion with primary and Secondary air and a subsequent complete combustion by means of excess air achieved by tertiary air, however, the substoichiometric combustion must according to the overall disclosure of this document with an extremely serious lack of air ( ⁇ ⁇ 1) because the temperature is "below the ash softening point" should remain below 1100 ° C.
  • the present invention is based on the object Process for burning such to create contaminated materials, with which also with a constructive simple and compact device construction special, necessary for the safe destruction of pollutants Combustion conditions easily manageable are. It should preferably also a continuous material throughput be possible, so that an economical operation in particular possible in direct combination with such facilities in which the contaminated materials occur.
  • a suitable combustion device has one Combustion chamber with a one-sided inlet opening for the burning material and one opposite the inlet opening Exhaust port for through combustion resulting smoke gases, whereby in the area of the inlet opening a device for introducing yourself to the burning, dusty material mixing primary air and a device in the area of the outlet opening are provided for introducing secondary air such that the secondary air on the one hand counteracts the primary air Flows in the direction of the inlet opening and on the other hand in a swirl flow around an inlet and outlet opening extending combustion chamber axis is offset.
  • the Invention connects to the outlet opening a post-combustion zone to which - in addition to the primary and secondary air - tertiary air is introduced.
  • the combustion can advantageously be carried out by metering Supply of primary, secondary and tertiary air like this control that overall at least approximately a stoichiometric Combustion is achieved.
  • ⁇ For security reasons - to always be complete
  • ⁇ To be able to ensure combustion - lies ⁇ according to the invention on the order of about 1.02.
  • This extremely small excess air is of decisive advantage in that as a fire temperature drop due to too big Excess air is avoided, i.e. the firing temperature can be kept very high and permanent. It is complete combustion with thermal destruction of all pollutants occurring in practice, in particular also of dioxins.
  • the term "complete combustion" means that by the invention in the flue gas only an extraordinary low percentage of unburned substances, namely ⁇ 0.1% is included. The one usually required here The limit value of a maximum of 5% unburned is therefore advantageously far below. Furthermore, the preferred near-stoichiometric combustion also a new formation of dioxins and the like advantageously avoided because of such reactions because of the low Air excess of around 2% in particular is not enough Oxygen is available.
  • tertiary air supplied in the afterburning zone can be substoichiometric according to the invention within the combustion chamber are burned, then a total of i.e. by primary, secondary and tertiary air, preferably achieved an approximately stoichiometric combustion with ⁇ ⁇ 1.02 becomes.
  • the substoichiometric combustion in the Combustion chamber leads to a higher combustion temperature and thereby an even safer removal of the pollutants, especially dioxins.
  • the by feeding Post-combustion caused by tertiary air practically leads to a completion of the combustion such that overall achieved the intended complete combustion becomes.
  • the primary air too is set in a swirl flow, the swirl directions of primary air and secondary air opposed to each other are directed.
  • too Tertiary air swirled; are here then the swirl directions of secondary air and tertiary air facing each other.
  • it is thus a "multi-stage counter-swirl burner".
  • the residence time spectrum of the material to be burned increased significantly.
  • the device is for 1000 kg Designed for full load, even at 1/20, i.e. 50 kg, a complete, optimal combustion can be achieved, even at a temperature of around 1800 ° C.
  • Device 1 for burning dust Materials mainly from a combustion chamber 2 with a one-sided inlet opening 4 for the material to be burned and also for supplied combustion air as well as with a the inlet opening 4 opposite in the throughput direction Outlet opening 6 for combustion Flue gases.
  • the inlet and outlet openings 4, 6 are preferred arranged coaxially to each other, i.e. a combustion chamber axis 8 runs in particular centrally through the Inlet and outlet openings 4, 6.
  • the material to be burned is in dust form, i.e. in ground state, supplied via a pipeline 10, this pipeline 10 in the area of the inlet opening 4 flows.
  • This material is a certain percentage of air attached so that a dust-air mixture is already from the pipe 10 exit. However, this mixture becomes additional Combustion air supplied.
  • the combustion air is initially in primary air P and Secondary air S divided, in the area of the inlet opening 4 a device 12 for introducing the primary air P and material to be burned in the area of the outlet opening 6 a device 14 for Introducing the secondary air S are provided such that the secondary air S on the one hand the primary air P or the resulting dust-air mixture in Direction of the inlet opening 4 flows and on the other hand in a swirl flow around the combustion chamber axis 8 becomes.
  • Fig. 1 and also in Fig.4 using Flow lines illustrated swirl flow of the secondary air S will increase the residence time of the flammable Mixtures reached within the combustion chamber 2 as well such an intense swirling and mixing that a almost homogeneous fuel mixture is generated. Result from this optimal combustion conditions.
  • the device is 12 to introduce the primary air P only in the form of a short, preferably cylindrical, the inlet opening at the same time 4 tube piece 16 formed such that the primary air P with the entrainment of the combustion Material initially essentially straight, i.e. as approximately homogeneous flow, through the inlet opening 4 in the direction the outlet opening 6 is blown.
  • the fuel mixture is then the opposite Swirl flow of the secondary air S intensive swirled.
  • the primary air P is formed such that the primary air P taking the material to be burned on the one hand the secondary air S in the direction of the outlet opening 6 flows and on the other hand also in a swirl flow is displaced about the combustion chamber axis 8.
  • the swirl direction of the primary air P or of the dust-air mixture the swirl direction of the secondary air S opposite.
  • a swirl flap device 18 with in particular for changing the swirl inclination-adjustable swirl flaps 20 are arranged.
  • This swirl flap device 18 is in the manner of a Turbine wheel or an axial fan, wherein the swirl flaps over the circumference of the inlet opening 4 evenly spaced around radial axes are in particular continuously pivotable, namely between an axially aligned arrangement and one approximately vertical arrangement, the opening 4 then almost closed is. This can also have a certain Regulation of the air volume can be achieved. In any case serves the swirl flap device 18 for the variability of Swirl effect or swirl intensity of the primary air-dust mixture.
  • Device 14 for introducing the secondary air S essentially from a surrounding or the outlet opening 6 to the outlet opening 6 concentric blowing ring 22, the one expanding conically in the direction of the combustion chamber 2 Inner surface 24 and several arranged distributed over the circumference Has louvers 26.
  • These louvers 26 extend from the outer circumference 28 of the blowing ring 22 to to the inner surface 24 and are oriented such that the secondary air S supplied from the outside through the louvers 26 flows and thereby into the combustion chamber 2 directed swirl flow is offset.
  • the blowing ring 22 is expedient formed by several individual ring elements 30, which each form the louvers 26 between them or limit. These ring elements 30 are Positioning means not described in detail in their position fixed or clamped.
  • the blowing ring is preferably made 22 from about twenty-four individual elements, so that also a total of twenty four louvers in one the scope is evenly distributed.
  • the Number of ring elements 30 or the louvers 26 can however vary widely, depending on the Interpretation of the burner output and the respectively required Air volume.
  • Louvers 26 of the blowing ring 22 in terms of their effective flow cross-section formed in such a nozzle-like manner are that the outside with a certain, i.e. by that required for complete combustion at ⁇ ⁇ 1 Air volume specified, inlet pressure supplied secondary air S through the narrowed louvers 26 one such high flow rate maintains that it penetrates of fuels in the louvers 26 prevented.
  • self-cleaning is advantageously practical or self-maintenance of the louvers 26 achieved by the injected secondary air S.
  • tertiary air T is supplied.
  • Conveniently for this purpose connects to the outlet opening 6 in the direction facing away from the combustion chamber 2 is a post-combustion zone 32 with a device 34 for feeding the Tertiary air T on.
  • the combustion takes place within the combustion chamber 2 sub-stoichiometric with an excess air number or "lack of air" ⁇ ⁇ 1. It becomes thereby a particularly high temperature to absolute safe destruction of pollutants, especially dioxins, reached.
  • the tertiary air T with a volume per unit time is supplied that preferably the overall combustion is approximately stoichiometric ( ⁇ about 1.02).
  • the overall combustion is approximately stoichiometric ( ⁇ about 1.02).
  • ⁇ about 1.02
  • excess air e.g. ⁇ ⁇ 1.9
  • the device 34 for supplying the tertiary air T is such trained that the tertiary air T on the one hand in the the combustion chamber 2 opposite direction of the post-combustion zone 32 flows, but on the other hand also in a swirl flow is displaced, whereby the dwell time within the post-combustion zone 32 is increased.
  • the swirl directions of tertiary air and secondary air opposed to each other This will make a repeat Mixing and swirling of the fuel mixture reached.
  • the device 34 also expediently exists for supplying the tertiary air T from a to the outlet opening 6 concentric blowing ring 36, which in its constructive Design basically that for the secondary air S provided blowing ring 22 corresponds, so that on this
  • the same or functional corresponding parts with the same reference numerals are referred.
  • the conical inner surface 24 of the blowing ring 36 into the Combustion chamber 2 extends in the opposite direction.
  • the air slots 26 are also formed in the blowing ring 36, that the tertiary air T has such a high flow rate maintains that it penetrates substances effectively prevented from the flue gases.
  • cold fresh air is expediently used (with Outside or ambient temperature).
  • the primary air P and preferably also the secondary air S before it is introduced into the combustion chamber 2 expediently heated.
  • the combustion chamber 2 is delimited by a chamber wall 38 , which in turn is enclosed by an outer jacket 40 in this way is that between the chamber wall 38 and the Sheath 40 a cavity enclosing the chamber wall 38 42 is formed.
  • this cavity 42 opens into one of the Outlet opening 6 near area an air inlet 44, and the cavity 42 goes on that facing away from the outlet opening 6 Side in the inlet opening 4 over.
  • a helical extending partition 46 arranged such that the Air supplied via the air inlet 44 to the chamber wall 38 flows around helically in the direction of the inlet opening 4. This ensures good and effective heat absorption or heat transfer from the combustion chamber 2 via the Chamber wall 38 reached on the air (heat exchanger). This also contributes to the fact that within the combustion chamber 2 very high firing temperatures can be achieved.
  • the chamber wall 38 is advantageously cooled.
  • the combustion chamber 2 with an inner jacket 48 lined with a refractory material.
  • the for this are commonly used refractory materials however only up to an average temperature of about Resistant at 1600 ° C. Therefore, it is due to the very high Combustion chamber temperatures of up to 2000 ° C are particularly advantageous, if between the chamber wall 38 and the refractory Inner jacket 48 a cavity enclosing the latter 50 formed for a cooling medium cooling the inner jacket 48 is.
  • the secondary air S is used as the cooling medium, for which purpose preferably the via the air inlet 44 and between the Chamber wall 38 and the outer shell 40 formed hollow Air 42 supplied in the room is in front of inlet opening 4. divided the area into the primary air P and the secondary air S.
  • Burner 54 is used on the one hand for the first ignition in start-up mode the combustion device 1. Once a regular combustion inside the combustion chamber 2 is reached, this burner 54 can be switched off become.
  • the pilot and auxiliary burner 54 preferably controlled automatically by a controller, that in the event of an irregularity within the Combustion chamber 2 running combustion of the pilot and auxiliary burners 54 automatically switched on for a certain time becomes. For this function it has the burner 54 switching control for monitoring the one hand in the Combustion chamber 2 running combustion and on the other hand the Flame of the burner 54, in particular photocells or the same sensors.
  • the combustion chamber 2 is thus directly on a combustion boiler 56 in particular a waste incineration plant arranged that exiting through the outlet opening 6 Flue gases directly into the combustion chamber 58 of the combustion boiler 56 can be initiated.
  • This is preferably Arrangement of device 1 on the combustion boiler 56 chosen such that the flue gases in one Enter the area of the combustion chamber 58 in which one Operating temperature ⁇ 1200 ° C. This is advantageous undercooling the combustion chamber flame Edge influences and streak formation in the firebox are excluded.
  • the Device 1 in particular for burning the in the Waste incineration system of activated coke, advantageously a steady throughput, i.e. a steady Disposal is possible. It also provides thermal support the one running inside the combustion boiler 56 Combustion reached. That from the Device 1 originating flue gas is then together with the Flue gases from a conventional incinerator Flue gas cleaning supplied.
  • the combustion chamber 2 is a processing device 60 upstream for the material to be burned, which in particular from a grinding device 62 and transport devices 64 exists.
  • the one that arises Activated coke from an intermediate silo 66 via a pneumatic one Conveyor system 64a in particular with nitrogen to the Grinding device 62 promoted and there for a secured Burning down the necessary fineness.
  • Of the Ground coke dust is then passed through a rotary valve 64b carried out and further by means of the combustion air dosed fed.
  • Each unit is separate advantageously designed to have a maximum Active coke can be disposed of continuously. This means, that each combustion boiler with its own combustion device is equipped so that by this Amount of activated coke directly in the boiler can be disposed of again.

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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)
  • Solid-Fuel Combustion (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Glass Compositions (AREA)

Claims (6)

  1. Procédé pour brûler des matières pulvérulentes avec utilisation d'un dispositif qui comprend une chambre de combustion (2) possédant une ouverture d'admission (4) sur un côté, pour la matière à brûler et une ouverture d'échappement (6) située à l'opposé de l'ouverture d'admission (4), pour les gaz de fumée issus de la combustion, dans lequel, dans la région de l'ouverture d'admission (4), est prévu un dispositif (12) pour introduire de l'air primaire (P) qui se mélange à la matière à brûler et, dans la région de l'ouverture d'échappement (6), est prévu un dispositif (14) pour introduire de l'air secondaire (S), de telle manière que l'air secondaire (S), d'une part, s'écoule en direction de l'ouverture d'admission (4) en sens inverse de l'air primaire (P) et, d'autre part, est mis en écoulement tourbillonnaire autour d'un axe (8) de la chambre de combustion qui traverse l'ouverture d'admission et l'ouverture d'échappement (4, 6), et dans lequel, à l'ouverture d'échappement (6) fait suite - vu dans le sens de l'échappement des gaz de fumée qui conduit hors de la chambre de combustion (2) - une zone de postcombustion (32) comprenant un dispositif (34) pour introduire de l'air tertiaire (T), la combustion à l'intérieur de la chambre de combustion (2) se produisant dans un mode sous-stoechiométrique avec λ < 1 de manière à atteindre une température de combustion d'au moins environ 1200°C pour éliminer les substances nocives comme les dioxines, tandis que, dans la zone de postcombustion (32), de l'air tertiaire (T) est acheminé sous un volume par unité de temps tel que la combustion se produise globalement à peu près stoechiométriquement, avec λ ≥ 1.
  2. Procédé selon la revendication 1, caractérisé en ce que la combustion se produit globalement à peu près stoechiométriquement avec λ = 1 à 1,05, en particulier à environ λ = 1,02.
  3. Procédé pour brûler des matières pulvérulentes avec utilisation d'un dispositif qui comprend une chambre de combustion (2) possédant une ouverture d'admission (4) sur un côté, pour la matière à brûler et une ouverture d'échappement (6) située à l'opposé de l'ouverture d'admission (4), pour les gaz de fumée issus de la combustion, dans lequel, dans la région de l'ouverture d'admission (4), est prévu un dispositif (12) pour introduire de l'air primaire (P) qui se mélange à la matière à brûler et, dans la région de l'ouverture d'échappement (6), est prévu un dispositif (14) pour introduire de l'air secondaire (S), de telle manière que l'air secondaire (S), d'une part, s'écoule en direction de l'ouverture d'admission (4) en sens inverse de l'air primaire (P) et, d'autre part, est mis en écoulement tourbillonnaire autour d'un axe (8) de la chambre de combustion qui traverse l'ouverture d'admission et l'ouverture d'échappement (4, 6), et dans lequel, à l'ouverture d'échappement (6) fait suite - vu dans le sens de l'échappement des gaz de fumée qui conduit hors de la chambre de combustion (2) - une zone de postcombustion (32) comprenant un dispositif (34) pour introduire de l'air tertiaire (T), la combustion à l'intérieur de la chambre de combustion (2) se produisant dans un mode sous-stoechiométrique avec λ < 1 de manière à atteindre une température de combustion d'au moins environ 1200°C pour éliminer les substances nocives comme les dioxines, tandis que, dans la zone de postcombustion (32), de l'air tertiaire (T) est acheminé sous un volume par unité de temps tel que la combustion se produise globalement à peu près stoechiométriquement, avec λ allant jusqu'à environ 1,9.
  4. Procédé selon une des revendications 1 à 3,
    caractérisé en ce que la combustion à l'intérieur de la chambre de combustion (2) se produit dans un intervalle de température de 1800°C à 2000°C ou plus.
  5. Procédé selon une des revendication 1 à 4,
    caractérisé en ce qu'on utilise comme air tertiaire (T) de l'air neuf froid.
  6. Procédé selon une des revendications 1 à 5,
    caractérisé en ce que l'air primaire (P) et, de préférence aussi l'air secondaire (S), sont chauffés avant leur introduction dans la chambre de combustion (2).
EP95103739A 1994-03-23 1995-03-15 Procédé de combustion pour matériaux pulvérulents Expired - Lifetime EP0674134B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98105588A EP0853215A3 (fr) 1994-03-23 1995-03-15 Dispositif de combustion pour matériaux pulvérulents

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4409951A DE4409951A1 (de) 1994-03-23 1994-03-23 Vorrichtung zum Verbrennen von staubförmigen Materialien
DE4409951 1994-03-23

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP98105588A Division EP0853215A3 (fr) 1994-03-23 1995-03-15 Dispositif de combustion pour matériaux pulvérulents

Publications (2)

Publication Number Publication Date
EP0674134A1 EP0674134A1 (fr) 1995-09-27
EP0674134B1 true EP0674134B1 (fr) 1999-05-26

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EP95103739A Expired - Lifetime EP0674134B1 (fr) 1994-03-23 1995-03-15 Procédé de combustion pour matériaux pulvérulents
EP98105588A Withdrawn EP0853215A3 (fr) 1994-03-23 1995-03-15 Dispositif de combustion pour matériaux pulvérulents

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EP98105588A Withdrawn EP0853215A3 (fr) 1994-03-23 1995-03-15 Dispositif de combustion pour matériaux pulvérulents

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EP (2) EP0674134B1 (fr)
AT (1) ATE180558T1 (fr)
DE (2) DE4409951A1 (fr)
ES (2) ES2081788T1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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WO2015069784A1 (fr) * 2013-11-08 2015-05-14 Zheng Shi Ajustement de la caractéristique de flamme à l'intérieur d'une chambre de combustion

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DE4409951A1 (de) 1995-09-28
ES2120399T1 (es) 1998-11-01
EP0853215A2 (fr) 1998-07-15
EP0674134A1 (fr) 1995-09-27
EP0853215A3 (fr) 1998-12-30
ATE180558T1 (de) 1999-06-15
DE59505994D1 (de) 1999-07-01
ES2081788T1 (es) 1996-03-16

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