EP1754937B1 - Tête de brûleur et procédé pour brûler du combustible - Google Patents

Tête de brûleur et procédé pour brûler du combustible Download PDF

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Publication number
EP1754937B1
EP1754937B1 EP06013517.5A EP06013517A EP1754937B1 EP 1754937 B1 EP1754937 B1 EP 1754937B1 EP 06013517 A EP06013517 A EP 06013517A EP 1754937 B1 EP1754937 B1 EP 1754937B1
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EP
European Patent Office
Prior art keywords
fuel
burner
downstream
combustion
burner head
Prior art date
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EP06013517.5A
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German (de)
English (en)
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EP1754937A2 (fr
EP1754937A3 (fr
Inventor
Thomas Schmidt
Hans-Jürgen Stittrich
Urte Donnerstag
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Elco Burners GmbH
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Elco Burners GmbH
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Application filed by Elco Burners GmbH filed Critical Elco Burners GmbH
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Publication of EP1754937A3 publication Critical patent/EP1754937A3/fr
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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 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/006—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber the recirculation taking place in the combustion chamber
    • 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
    • F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/70—Baffles or like flow-disturbing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
    • F23D17/002—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or liquid fuel

Definitions

  • the present invention generally relates to a combustion head and method which, when combusting gaseous and / or liquid fuels, produces a flame front spaced from the combustion head downstream in a combustion chamber.
  • polluting emissions arise, in particular in the form of nitrogen oxides (eg NO, NO 2 ), which are commonly referred to collectively as NOx.
  • Pollutant emissions can be influenced and / or reduced by design measures in furnaces, especially in burners used there.
  • DE 195 09 219 discloses a method and a burner head in which fuel gas is burned under supply of combustion air and nitrogen oxide reduction of inert gas, wherein the fuel gas is injected with respect to the combustion air in two consecutive planes in the flow direction, with a superstoichiometric combustion air-fuel gas mixture in the upstream of the flame at the flame root lying first level and with complementary fuel gas supply in the second level, and wherein serves as an inert gas recirculated exhaust gas, which is supplied in the second level, and a portion of the blown in the second level fuel gases with the recirculating exhaust gas forms a substoichiometric mixture before it is introduced into the flame.
  • EP 0 347 834 discloses a burner head for a blower gas burner with a device for the fuel gas distribution and the combustion air distribution, as well as fuel gas nozzles and air passage openings receiving the combustion tube and with an adjoining the combustion tube flame tube, wherein between the combustion tube and flame tube at least one radial, the exhaust gas recirculation opening is provided, and in the root region of the flame between the combustion tube and flame tube upstream of the radial opening, but are provided downstream of the fuel gas nozzles and air passage openings transversely to the burner head longitudinal axis radially inwardly projecting webs.
  • EP 0 635 676 discloses a method for low-NOx combustion of liquid or gaseous fuels in furnaces having a burner projecting into a combustion chamber of a boiler, the burner tube of which comprises at least one fuel nozzle arranged therein for the supply of the fuel and an adjoining baffle plate, in which a considerable part supplied to the fuel downstream of the baffle plate and adjacent to the burner tube inner wall area, located in the combustion chamber exhaust gases recirculated by internal recirculation downstream of the baffle plate built-up pressure areas in the burner tube and one or more the burner tube penetrating and projecting into the vacuum areas guide devices are used.
  • EP 0 857 915 discloses a method of combusting liquid and / or gaseous fuels having a burner head of a burner projecting into the combustion chamber of a boiler, the flame tube of which has at least one fuel atomizing nozzle disposed therein and a swirler, a portion of the air stream for combustion a swirler is guided, at the downstream portion of the flame tube by guiding means and openings of the flame tube, a negative pressure is generated, the exhaust gas from the combustion is mixed with the combustion air, the exhaust gas is mixed with the fuel not yet ignited in the combustion chamber, and a flame front is generated at a distance in front of the combustion head.
  • EP 1 245 901 discloses a burner whose combustion head, which sits within a combustion chamber, has a tubular body to provide a liquid combustion aid.
  • EP 0 774 621 discloses a method and apparatus for achieving low nitrogen output combustion using a burner having an air supply tube terminated at the end by a baffle plate.
  • the burner head has a tubular body for supplying an oxygen carrier to a combustion chamber, at least one conduit for feeding the fuel into the combustion chamber, a converging transition piece at the end of the tubular body and at least one ignition device.
  • the outlet of each conduit is still near an inclined wall surface within the converging transition piece of the conduit of the burner head.
  • the object of the invention is to further reduce the pollutants resulting from the combustion of fuels, especially NOx emissions, compared to known approaches, in particular to allow higher combustion chamber loads at the lowest emission level.
  • the present invention provides a fuel head and method of combusting fuel according to the independent claims.
  • the inventive combustion head is designed to burn liquid and / or gaseous fuels downstream with a flame front spaced from the combustion head.
  • the combustion head of the present invention produces a flame front in operation positioned in a combustion chamber spaced from the combustion head and "free" in front of the combustion head stabilized in the combustion chamber.
  • the burner head includes a burner tube having a downstream open end adapted for placement in a.
  • a combustion chamber is provided, at least one arranged at the downstream end guide, which at a first angle radially inwardly, i. at an angle between 0 ° and 90 ° in the direction of the burner tube axis, and one or more fuel nozzles arranged in the burner tube.
  • a plurality of guide means are provided which are spaced from each other and extend radially inwardly and in the downstream direction at the first angle.
  • the or each baffle may extend radially inwardly and in the direction perpendicular to the torch tube axis at the first angle, or radially inward and in the downstream direction at the first angle.
  • the at least one guide device extends obliquely to the longitudinal axis of the burner tube, wherein radially inner regions of the at least one guide device are spaced further from the open end of the burner tube than radially outer regions.
  • the fuel nozzle (s) is / are preferably configured to deliver fuel at the downstream end at a second angle radially outward in the downstream direction toward the at least one nozzle and into the combustion chamber during operation.
  • the fuel nozzle (s) operatively emit fuel adjacent to the open end of the combustor so as to provide a fuel flow or jet that extends obliquely outwardly from radially inward regions of the burner tube extends radially outer regions of the burner tube, where it to the at least one guide and / or, if present, through the spaces between the several guide means is discharged into the combustion chamber.
  • the at least one guide means may comprise a ring located at the downstream end or a disc having a central opening. This embodiment can be achieved by a guide device designed as a separate component or by a baffle plate described below at least partially providing the function of the guide device.
  • a plurality of guide means may be provided, which are at least partially spaced from each other so that there are gaps between the guide means.
  • the or each baffle may each include an area that may be flown with fuel discharged from the fuel nozzles.
  • these surfaces may be delta-shaped.
  • the fuel nozzle (s) is configured to deliver fuel at the second angle and toward the at least one nozzle and / or toward the spaces between nozzles. This can be done for example by an angle to the longitudinal axis of the burner tube or to its radial direction arrangement of the fuel nozzles at the open end of the burner tube and / or by appropriately directed outlet openings of the fuel nozzles.
  • the fuel nozzles are suitable for delivering gaseous fuel. However, it is also provided to supply liquid fuel by means of at least one or more additional fuel nozzles.
  • a plurality of fuel nozzles at the open end of the burner tube are each arranged between one of the intermediate spaces between guide devices.
  • the burner head comprises an annular disc which acts as a baffle plate.
  • the disc is attached to the open end of the burner tube and extends there from the burner tube substantially radially inwardly, in particular perpendicular to the longitudinal axis of the burner tube.
  • the disc is designed to act at least partially as a guide, in particular radially inward areas of the disc. It is also envisaged that the disc serves as a guide as a whole and thereby also exercises the storage function.
  • the disc it is possible to carry out the disc as a separate component and to arrange the at least one guide device on the disc.
  • the guide device in the case of an annular guide device, for example, can extend radially inward and in the downstream direction from radially inner regions of the disk at the first angle.
  • vanes When using multiple vanes, they may be attached to radially inner portions of the disk, in particular substantially immediately on the inner circumference of the disk (i.e., the disk rim defining the opening of the annular disk) and extending radially inwardly therefrom at the first angle.
  • At least one further fuel nozzle may be present.
  • the at least one further fuel nozzle is designed to radially spear-shaped fuel under a spray angle (third angle) determined by the atomizer nozzle to surrender to the outside.
  • the fuel is introduced in a plurality of fuel jets at an angle to the burner tube axis radially outward between the guide devices. This has, for example, the advantage of being able to select the fuel supply as a function of the fuel in order to optimize its combustion.
  • the at least one other fuel nozzle emit liquid fuel during operation.
  • the at least one further fuel nozzle can also be designed for the supply of gaseous fuel. The same applies in the event that the above-mentioned fuel nozzles to supply liquid fuel.
  • the combustion head also has a swirling device, for example in the form of a swirling body that is stationary or displaceable in the longitudinal direction of the burner tube in order to displace combustion air which can be supplied through the burner tube, in particular its central, central region, ie to displace it with a swirl impulse. It is provided to arrange the swirl device upstream of the fuel nozzles in the combustion tube.
  • the combustion head comprises a so-called pilot burner or auxiliary burner.
  • pilot burner combustion gases can be supplied, which can provide in operation for preheating to a priming (without forming a flame front) of fuel, whereby a stabilization of the spaced apart from the combustion head flame front can be achieved.
  • the pilot burner is disposed upstream of the fuel nozzles in the combustion tube and, if present, upstream of the swirl means.
  • the first angle is in a range between about 35 ° and 65 °.
  • the second angle is in a range between about 30 ° and 60 °.
  • fuel is burned using a combustion head having a burner tube having a downstream open end extending into a combustion chamber and at least one guide disposed at the downstream end radially radiating at a first angle extends inwards.
  • a combustion head having a burner tube having a downstream open end extending into a combustion chamber and at least one guide disposed at the downstream end radially radiating at a first angle extends inwards.
  • fuel is discharged at the downstream end at a second angle radially outward toward the nozzles and into the combustion chamber.
  • a flame front is produced at a distance downstream of the combustion head, that is, a flame front stabilizing "free” in front of the combustion head in the combustion chamber.
  • the fuel is delivered at the second angle toward the at least one nozzle and / or, if present, toward interstices between nozzles.
  • the fuel is discharged so that it mixes intensively with the combustion air and the recirculated gases downstream of the burner tube in the region of the guide means.
  • the fuel is discharged so that it mixes intensively with the combustion air and the recirculated gases downstream of the burner tube in the region of the guide means.
  • an initial ignition of fuel in front of the flame front can be effected, for example, by means of a pilot burner upstream of the fuel supply hot combustion gas is generated and introduced into the flame root.
  • the fuel discharged at the second angle is delivered in a range between about 30 ° and 60 °.
  • the present invention provides a method of combusting fuel using a combustion head having a burner tube extending partially into a combustion chamber, wherein a free flame front is created in the combustion chamber from and downstream of the combustion tube, and vacuum zones in the combustion chamber be formed with fluidized areas so that in the combustion chamber existing exhaust gases are recirculated inside the combustion chamber and mixed with over the burner tube at the downstream end at an angle radially outward in the downstream direction supplied fuel.
  • Fig. 1a and 1b show schematic representations of a designated as a whole with 2 burner head.
  • the combustion head comprises a housing 4 with which the combustion head 2 can be fastened, for example, to corresponding areas and / or components of a firing installation.
  • Gaseous fuel is supplied via the first port 6 to a fuel gas pipe 10, which comprises a region formed as a double-walled tube 12 area.
  • Liquid fuel is supplied via the second connection 8 to a fuel rod 14, which is partially enclosed by the double-jacket tube 12.
  • the fuel rod 14 is connected by an auxiliary device, e.g. a linear actuator axially displaceable in the double jacket tube. During operation of the gaseous fuel burner head, this fuel rod and attached fuel nozzle 26 may be withdrawn into the jacketed tube to prevent thermal overloading of the fuel nozzle.
  • an auxiliary device e.g. a linear actuator axially displaceable in the double jacket tube.
  • the housing 4 has an opening 16, via which the combustion head 2 combustion air can be supplied.
  • a burner tube 18 is fixed, through which the double-jacket tube 12 and the Fuel nozzle linkage 14, as in Fig. 1a to see, extend.
  • the direction indicated by the arrow 20 is referred to as downstream, while the direction indicated by the arrow 22 is referred to as upstream.
  • fuel nozzles 24 are arranged.
  • the fuel nozzles 24 are directed obliquely in the direction downstream with respect to the longitudinal axis of the burner tube 18, in other words extend at an angle radially outward. It is understood that the orientation of the fuel nozzles 24 also determines the direction in which they emit fuel. That is, in the embodiment illustrated here, the fuel nozzles 24 deliver fuel radially outward at an angle.
  • This fuel discharge direction can also be achieved, for example, by having the double-jacket tube 12 at its downstream end fuel outlet openings which allow a discharge of fuel at an angle radially outward and / or, for example, at the downstream end of the double-jacket tube 12 fuel substantially in the longitudinal direction the burner tube 18 is discharged and deflected by deflection at an angle radially outward.
  • the fuel nozzle linkage 14 has another fuel nozzle 26, which can deliver fuel as a spray with different spray angles and profiles.
  • the burner tube 18 At its upstream end 28, the burner tube 18 is open in order to be able to receive combustion air supplied via the opening 16.
  • an annular disc 32 At the downstream end 30 of the burner tube 18, an annular disc 32 is arranged.
  • the disc 32 may also be referred to as a baffle plate, since it jams towards downstream flowing combustion air and, if present, fuel and redirects to the center of the downstream end 30 of the burner tube 18.
  • guide devices 34 are arranged at the inner edge of the baffle plate 32, which limits the central opening. Manufacturing technology, the burner tube 18, the disc 32 and the guide means 34 may be provided as separate components or integrally formed.
  • the guide means 34 extend obliquely inwards, starting from the disc 32, in the direction downstream, in other words at an angle radially inwards and in the direction downstream.
  • the vanes 34 are formed by delta-shaped, triangular surfaces.
  • the fuel nozzles 24 are each designed and / or arranged so that they do not direct fuel directly to the guide 34, but in the direction of the spaces between the guide 34th
  • a swirl device or a swirl body 36 is provided on the double-walled tube 12 in a circumferential manner.
  • the swirl device 36 supplied combustion air or at least a part thereof (eg, the central, central area) imparted a swirl pulse, so that an internal swirl flow is generated downstream of the swirl device 36.
  • the diameter of the swirling device 36 and the distance to the disc 32 affect the pulse ratio between the twisted combustion air and the untwisted air flowing between the swirling device 36 and the burner tube 18.
  • the swirl device 36 is displaceable in the longitudinal direction of the burner tube 18, so that an adjustment of the swirl device 36 relative to the plate 32 or the guide devices 34 provides a flow characteristic which is described below. and pressure ratios upstream and downstream of the disc 32 and the guide 34 optimized swirl flow is generated.
  • a pilot burner or support burner 38 is arranged upstream of the swirl device 36.
  • the pilot burner 38 is used, in particular, at partial load operation to dispense combustion gases that can provide heating up to initiation of fuel output by the fuel nozzles 24 and / or 26.
  • This "pretreatment" of fuel is used in particular for additional stabilization of a flame front, which is described in more detail below and is formed from the combustion head 2.
  • Fig. 2 schematically illustrates the use of the burner head 2 of Fig. 1a and 1b in an in Fig. 2 indicated firing system is due to the assumed here rotationally symmetrical construction of the furnace and the combustion head 2 and the conditions occurring during operation Fig. 2 a with respect to an axis of symmetry 40 schematic sectional view.
  • the combustion head 2 more precisely a downstream region of the burner tube 18, projects into a combustion chamber 42.
  • the combustion chamber 42 is bounded by walls 44.
  • the combustion air flowing against the disc 32 and the guide means 34 causes, on the disc 32 and on the guide means 34 downstream, the means at the side facing in the combustion chamber 42 sides of the disc 32 and the guide means 34, form negative pressure zones with fluidized areas.
  • two counter-rotating swirl pots 46 and 48 are formed on each baffle 34, which can extend far into a flame front 50 which is formed downstream of the burner head 2 and spaced therefrom.
  • the vacuum zones and fluidized areas, in particular the vortex chambers 46 and 48 provide for an intensive, combustion chamber internal recirculation of gases or exhaust gases present in the combustion chamber 42, which arise during combustion of fuel supplied by the combustion head 2.
  • the fluidized areas provide for intensive mixing of recirculated combustion exhaust gases and supplied fuel.
  • the flame front 50 does not form directly on the combustion head 2 itself, but is "free" in the combustion chamber 42.
  • the flame front 50 which is spaced from the combustion head 2, permits mixing of recirculated combustion exhaust gases and supplied fuel, as a result of which the flame temperature reduced and resulting in combustion nitrogen oxides are reduced. Furthermore, the flame front 50, which is at a distance from the combustion head 2, makes it possible to prepare fuel in more detail below.
  • the fuel nozzles 24 and / or 26 (the latter in Fig. 2 not shown) supplied fuel in the areas of the combustion chamber 42 in which the vortex plug 48 is present.
  • This area is referred to below as the outer recirculation zone.
  • the outer recirculation zone In the outer recirculation zone there is formation of a strong fuel enrichment with a substoichiometric, reducing acting atmosphere.
  • Resulting radicals are - at least partially sucked by the combustion head 2 - mixed with exhaust gases from the flame.
  • the radicals are reactive and ignite at least partially downstream of the combustion head 2 in areas where in which recirculated combustion gas mixes with the combustion head 2 at the upstream end of supplied combustion air.
  • the oxygen partial pressure of the combustion air is lowered in addition to the loading of the combustion air flow with recirculated, inert combustion gases, before the mixture of combustion air and recirculated combustion gases can mix with fuel and ignite.
  • the radicals and reaction products formed in the processing and / or decomposition of fuel represent unstable reaction intermediates within flames.
  • fuel eg CH, HCH, CH 3 , OH and CO
  • CH 4 stable methane molecules
  • the combustion of the combustible constituents diluted with recirculated inert combustion exhaust gas downstream of the combustion head 2 proceeds slowly enough to avoid the formation of regions with high (combustion) temperatures.
  • this combustion proceeds fast enough to thermally stabilize the flame front 50 spaced from the combustion head 2 by heat of oxidation and the oxygen partial pressure of the mixture of combustion air and recirculated combustion exhaust gas through the binding of oxygen for the oxidation of the radicals and partially combusted constituents (especially partially combusted gases) reduce.
  • the proportion of reductive CO in the recirculated combustion exhaust gas prevents formation of hot flame because CO has a lower laminar flame velocity compared to methane.
  • the flame temperature is additionally reduced, whereby the amount of nitrogen oxides produced during the combustion can be kept at a low level. This is confirmed by tests in which even at high combustion chamber load least amounts of nitrogen oxide were found - which are significantly lower than those of the known methods.
  • the combustion proceeds more stably compared with known approaches, in particular, the combustion pulsations which are generally customary at high recirculation rates of combustion exhaust gases are absent.
  • the present invention allows compared to the prior art, a further reduction of nitrogen oxides in exhaust gases of combustion plants, especially in gas, fuel oil and multi-fuel burners, achieved by the above-described fuel treatment and / or fuel decomposition in particular in radicals in the areas in the combustion gases be returned to interact with supplied fuel.
  • the present invention improves the stability of the "free" flame front, especially when a pilot burner is used in partial load operation to achieve preheat to fuel priming.
  • the present invention also reduces the formation of soot, especially in the areas in which combustion gases of the combustion chamber are recycled, because the recirculation and / or mixing of the combustion gases circumferentially on the inner edge of the disc 32 and in addition to the edges of the guide 34 takes place.
  • the pre-gasification of the fuel spray is substantially improved and intensifies the mixing of the recirculated gases with the combustion air.

Claims (28)

  1. Tête de combustion pour la combustion de combustible comportant un front de flamme libre, le front de flamme libre se stabilisant en aval de la tête de combustion et à distance de celle-ci, comprenant :
    - un brûleur tubulaire (18), qui présente une extrémité ouverte (30) située en aval et prévue pour être disposée dans une chambre de combustion,
    - un disque (32) en forme d'anneau qui s'étend radialement vers l'intérieur depuis l'extrémité (30) située en aval,
    - au moins un dispositif de guidage (34) disposé sur l'extrémité (30) située en aval et qui s'étend radialement vers l'intérieur depuis la circonférence intérieure du disque (32) en formant un premier angle,
    - au moins une buse à combustible (24 ; 26) prévue dans ou sur le brûleur tubulaire (18) et disposée et/ou conçue pour délivrer du combustible, dans la chambre de combustion, sur l'extrémité (30) située en aval en formant un deuxième angle radialement vers l'extérieur en direction de l'aval, et
    - un turbulateur (36) disposé en amont des buses à combustible (24 ; 26) dans le brûleur tubulaire (18).
  2. Tête de combustion selon la revendication 1, dans laquelle plusieurs dispositifs de guidage (34), à distance l'un de l'autre, s'étendent radialement vers l'intérieur et vers l'amont en formant un premier angle.
  3. Tête de combustion selon la revendication 1, dans laquelle l'au moins un dispositif de guidage (34) s'étend radialement vers l'intérieur et dans le sens perpendiculaire à l'axe du brûleur tubulaire.
  4. Tête de combustion selon la revendication 2, dans laquelle les plusieurs dispositifs de guidage (34) englobent des zones à distance l'une de l'autre et forment des espaces intermédiaires.
  5. Tête de combustion selon la revendication 4, dans laquelle la ou chaque buse à combustible (24 ; 26) est conçue pour délivrer du combustible en formant un deuxième angle en direction des espaces intermédiaires entre les dispositifs de guidage (34).
  6. Tête de combustion selon l'une quelconque des revendications précédentes, dans laquelle la ou chaque buse à combustible (24 ; 26) est conçue pour délivrer du combustible gazeux.
  7. Tête de combustion selon l'une quelconque des revendications 4 à 6, dans laquelle chacune des buses à combustible (24 ; 26) est disposée respectivement entre l'un des espaces intermédiaires entre les dispositifs de guidage (34).
  8. Tête de combustion selon l'une quelconque des revendications 2 à 7, dans laquelle les dispositifs de guidage (34) présentent chacun une surface en forme de delta.
  9. Tête de combustion selon l'une quelconque des revendications précédentes, comportant une autre buse à combustible (26) conçue pour délivrer du combustible dans la chambre de combustion en formant un troisième angle radialement vers l'extérieur en direction de l'aval.
  10. Tête de combustion selon la revendication 9, dans laquelle l'autre buse à combustible (26) est conçue pour délivrer du combustible liquide.
  11. Tête de combustion selon l'une quelconque des revendications précédentes, comportant un brûleur pilote (38) disposé en amont des buses à combustible (24, 26) dans le brûleur tubulaire (18).
  12. Tête de combustion selon la revendication 11, dans laquelle un turbulateur (36) est disposé en aval du brûleur pilote (38).
  13. Tête de combustion selon l'une quelconque des revendications précédentes, dans laquelle le premier angle est compris entre 35° et 65°.
  14. Tête de combustion selon l'une quelconque des revendications précédentes, dans laquelle le deuxième angle est compris entre 30° et 60°.
  15. Procédé de combustion de combustible utilisant une tête de combustion comprenant :
    - un brûleur tubulaire qui présente une extrémité ouverte située en aval et s'étend dans une chambre de combustion,
    - un disque en forme d'anneau qui s'étend radialement vers l'intérieur depuis l'extrémité située en aval,
    - au moins un dispositif de guidage disposé sur l'extrémité située en aval et qui s'étend radialement vers l'intérieur depuis la circonférence intérieure du disque en formant un premier angle,
    - au moins une buse à combustible prévue dans ou sur le brûleur tubulaire et disposée et/ou conçue pour délivrer du combustible, dans la chambre de combustion, sur l'extrémité située en aval en formant un deuxième angle radialement vers l'extérieur en direction de l'aval et en direction de l'au moins un dispositif de guidage, et
    - un turbulateur disposé en amont des buses à combustible dans le brûleur tubulaire,
    dans lequel procédé :
    - du combustible est délivré dans la chambre de combustion, sur l'extrémité située en aval en formant un deuxième angle radialement vers l'extérieur en direction de l'aval, et
    - un front de flamme libre est généré, ce front de flamme libre étant stabilisé en aval de la tête de combustion et à distance de celle-ci.
  16. Procédé selon la revendication 15, dans lequel du combustible est délivré en formant le deuxième angle en direction des espaces intermédiaires entre plusieurs dispositifs de guidage situés à distance l'un de l'autre et formant des espaces intermédiaires.
  17. Procédé selon la revendication 15 ou la revendication 16, dans lequel le combustible est délivré de manière à former, en aval de chaque dispositif de guidage, des zones de dépression comportant une ou plusieurs zones de turbulence.
  18. Procédé selon l'une quelconque des revendications 15 à 17, dans lequel le combustible est un combustible gazeux.
  19. Procédé selon l'une quelconque des revendications 15 à 18, dans lequel un autre combustible est délivré dans la chambre de combustion en formant un troisième angle radialement vers l'extérieur en direction de l'aval.
  20. Procédé selon la revendication 19, dans lequel l'autre combustible est un combustible liquide.
  21. Procédé selon l'une quelconque des revendications 15 à 20, dans lequel, en amont de l'alimentation en combustible, un gaz de combustion est généré, lequel provoque un allumage initial du combustible devant le front de flamme afin de stabiliser le front de flamme.
  22. Procédé selon l'une quelconque des revendications 15 à 21, dans lequel le combustible délivré en formant un deuxième angle est délivré dans une plage comprise entre 30° et 60°.
  23. Procédé selon la revendication 15, dans lequel des zones de dépression comportant des zones de turbulence sont créées dans la chambre de combustion de manière à faire recirculer les gaz d'échappement présents dans la chambre de combustion et de les mélanger au combustible qui est acheminé via le brûleur tubulaire sur l'extrémité située en aval en formant un angle radialement vers l'extérieur en direction de l'aval.
  24. Procédé selon la revendication 23, dans lequel des turbulences de sillage sont générées dans les zones de turbulence.
  25. Procédé selon la revendication 24, dans lequel un enrichissement du combustible est généré avec une atmosphère sous-stoechiométrique réductrice dans une zone de recirculation externe comprenant une turbulence de sillage extérieure et/ou dans une zone de recirculation interne comprenant une turbulence de sillage intérieure.
  26. Procédé selon la revendication 25, dans lequel, dans l'au moins une zone de recirculation, des molécules de combustible sont clivées en radicaux, du moins en partie et/ou le combustible est oxydé, du moins en partie.
  27. Procédé selon la revendication 26, dans lequel des radicaux sont aspirés, du moins en partie, avec des gaz recirculés de la chambre de combustion, en utilisant la tête de combustion.
  28. Procédé selon la revendication 27, dans lequel les radicaux aspirés sont allumés, du moins en partie, dans des zones où des gaz recirculés de la chambre de combustion sont mélangés à l'air de combustion acheminé par la tête de combustion sur l'extrémité située en amont de celle-ci.
EP06013517.5A 2005-08-16 2006-06-29 Tête de brûleur et procédé pour brûler du combustible Active EP1754937B1 (fr)

Applications Claiming Priority (1)

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DE102005038662A DE102005038662B4 (de) 2005-08-16 2005-08-16 Brennkopf und Verfahren zur Verbrennung von Brennstoff

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EP1754937A2 EP1754937A2 (fr) 2007-02-21
EP1754937A3 EP1754937A3 (fr) 2014-08-20
EP1754937B1 true EP1754937B1 (fr) 2017-08-09

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EP (1) EP1754937B1 (fr)
DE (2) DE102005038662B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020118325A1 (de) 2020-07-10 2022-01-13 Elco Burners Gmbh Verfahren zur gestuften verbrennung eines brennstoffes und brennkopf

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005053819A1 (de) * 2005-11-11 2007-05-16 Khd Humboldt Wedag Gmbh Drehofenbrenner
ATE533995T1 (de) 2007-09-14 2011-12-15 Elco Burners Gmbh Brennerkopf und verfahren zur einstufigen verbrennung von brennstoff in einer vom brennerkopf beabstandeten verbrennungszone
EP2080952A1 (fr) * 2008-01-17 2009-07-22 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Brûleur et procédé pour alterner une oxycombustion et une combustion à l'air
KR20100022145A (ko) * 2008-08-19 2010-03-02 삼성전자주식회사 세탁기 및 모터의 제어 방법
DE102017114570B4 (de) 2017-06-29 2021-02-04 MIchael Karlowsky Brennerkopf und Verbrennungsverfahren
CN108443874B (zh) * 2018-05-21 2024-03-22 温岭市博惠热能设备股份有限公司 一种燃烧器及其燃烧头

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19542373A1 (de) * 1994-11-14 1996-05-15 Rbl Spa Brennerkopf für Gasbrenner

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE58904315D1 (de) 1988-06-21 1993-06-17 Dreizler Walter Dipl Ing Fh Brennerkopf fuer einen geblaesegasbrenner.
US5299930A (en) * 1992-11-09 1994-04-05 Forney International, Inc. Low nox burner
DE4324298C2 (de) * 1993-07-20 1999-01-21 Elco Kloeckner Heiztech Gmbh Verfahren zur Verbrennung von flüssigen oder gasförmigen Brennstoffen in Feuerungsanlagen und Brenner zur Durchführung des Verfahrens
DE19509219C2 (de) * 1995-03-17 2003-07-24 Ulrich Dreizler Verfahren, bzw. Brennerkopf zum Verbrennen von Brenngas
JPH09137916A (ja) * 1995-11-16 1997-05-27 Tokyo Gas Co Ltd 窒素酸化物低発生燃焼方法及び装置
DE19704721B4 (de) * 1997-02-07 2006-08-17 E.C.B. Gmbh Verfahren und Brennkopf zur Verbrennung von flüssigen oder gasförmigen Brennstoffen
ITBO20010178A1 (it) * 2001-03-26 2002-09-26 Riello Spa Bruciatore

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19542373A1 (de) * 1994-11-14 1996-05-15 Rbl Spa Brennerkopf für Gasbrenner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020118325A1 (de) 2020-07-10 2022-01-13 Elco Burners Gmbh Verfahren zur gestuften verbrennung eines brennstoffes und brennkopf

Also Published As

Publication number Publication date
DE102005038662B4 (de) 2007-08-23
EP1754937A2 (fr) 2007-02-21
EP1754937A3 (fr) 2014-08-20
US7891971B2 (en) 2011-02-22
DE202005021253U1 (de) 2007-07-26
DE102005038662A1 (de) 2007-03-01
US20070042308A1 (en) 2007-02-22

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