EP1292795B1 - Procede pour l'exploitation d'un bruleur a premelange avec injection etagee de gaz - Google Patents

Procede pour l'exploitation d'un bruleur a premelange avec injection etagee de gaz Download PDF

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Publication number
EP1292795B1
EP1292795B1 EP01951833A EP01951833A EP1292795B1 EP 1292795 B1 EP1292795 B1 EP 1292795B1 EP 01951833 A EP01951833 A EP 01951833A EP 01951833 A EP01951833 A EP 01951833A EP 1292795 B1 EP1292795 B1 EP 1292795B1
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EP
European Patent Office
Prior art keywords
fuel
burner
fuel supply
outlet openings
conduits
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
EP01951833A
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German (de)
English (en)
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EP1292795A1 (fr
Inventor
Adnan Eroglu
Jaan Hellat
Peter Stuber
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.)
General Electric Technology GmbH
Original Assignee
Alstom Technology AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE10029607A external-priority patent/DE10029607A1/de
Application filed by Alstom Technology AG filed Critical Alstom Technology AG
Priority to EP05101530.3A priority Critical patent/EP1559955B1/fr
Publication of EP1292795A1 publication Critical patent/EP1292795A1/fr
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Publication of EP1292795B1 publication Critical patent/EP1292795B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
    • 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
    • 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
    • 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 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/07002—Premix burners with air inlet slots obtained between offset curved wall surfaces, e.g. double cone burners
    • 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
    • F23D2900/14—Special features of gas burners
    • F23D2900/14021—Premixing burners with swirling or vortices creating means for fuel or air

Definitions

  • the present invention relates to a method for operating a burner, the at least one first Fuel supply with a first group of im Essentially arranged in the direction of the burner axis Fuel outlet openings for the introduction of a first premix fuel in a swirl chamber and one or more second fuel feeds with a second group of essentially in the direction the burner axis arranged fuel outlet openings wherein the second fuel feeds independent of the first fuel supply can be acted upon with fuel.
  • a conical burner consisting of several shells a so-called double-cone burner, according to the preamble of claim 1 is known.
  • the conical swirl generator composed of several shells, a swirl flow is generated in the conical interior enclosed by the partial cone shells. Due to a jump in cross section at a combustion chamber end of the burner, the swirl flow becomes unstable, and turns into an annular swirling flow with backflow in the core. This backflow allows the stabilization of a flame front at the burner outlet.
  • the shells of the swirl generator are assembled in such a way that tangential air inlet slots for combustion air are formed along the burner axis.
  • Feed lines for a gaseous premix fuel which have outlet openings for the premix gas distributed in the direction of the burner axis, are provided on the inflow edge of the conical shells formed in this way.
  • the gas is injected through the outlet openings or bores transversely to the air inlet gap. This injection, in conjunction with the swirl generated in the swirl space of the combustion air-fuel gas flow to a good mixing of the fuel or premixed gas with the combustion air. Good mixing in such premix burners is the prerequisite for low NO x values during the combustion process.
  • a burner for a Heat generator known after the swirl generator an additional mixing section to the other Mixing of fuel and combustion air having.
  • This mixing section can, for example, as Downstream pipe be executed, in which the the swirl generator exiting flow without significant Flow losses is transferred. Through this additional mixing distance can be the degree of mixing further increased and thus the pollutant emissions be reduced.
  • WO 93/17279 shows another known premix burner in which a cylindrical swirl generator with an additional conical inner body is used.
  • the premix gas is also injected via feeders with corresponding outlet openings in the swirl space, which are arranged along the axially extending air inlet slots.
  • This burner has in the conical inner body in addition to a central supply of fuel gas, which can be injected near the outlet opening of the burner for piloting into the swirl space.
  • This additional pilot stage is used to start the burner.
  • the supply of the pilot gas in the outlet region of the burner leads to increased NO x emissions, since in this area only an insufficient mixing with the combustion air can take place.
  • EP 0918191 A1 shows a generic Burner for operating a heat generator that is parallel to a first feeder for fuel also one second feeder for another type of fuel that matched to the other fuel type is. Both feeds are independent. controllable. By this configuration, the burner without modification with different fuel types operate.
  • the premixing gas is injected into the air inlet gap by means of feeds with outlet openings arranged essentially in the direction of the burner axis.
  • the characteristic of the injection with regard to penetration depth and mixing of the gas jets and the fuel distribution along the air inlet slots or the burner axis are predetermined.
  • the arrangement of the outlet openings thus already determines the mixing quality of the gas and the combustion air and the fuel distribution at the burner outlet.
  • a burner with swirl body and swirl space which has at least one first fuel feed with a first group of fuel exit openings arranged substantially in the direction of a burner axis for introducing a first premix fuel quantity into the swirl space and one or more second fuel feeds with a second one Group of substantially arranged in the direction of the burner axis fuel outlet openings, wherein the second fuel supply is acted upon regardless of the first fuel supply with fuel / are.
  • the supply of the fuel via the first fuel feeds is controlled or regulated separately from the supply of the fuel via the second fuel feeds, wherein the same fuel is supplied to the first and second fuel feeds.
  • the burner can be stabilized even with changes in load, gas quality or gas preheating temperature with approximately constant NO x emission values operate.
  • the fuel used as Vormischbrennstoff and in variable mass flow ratio to the first and split second feedings is hereby the fuel used as Vormischbrennstoff and in variable mass flow ratio to the first and split second feedings.
  • the feed of Premix fuel differs from the feed of pilot fuel, i. of fuel for the Realization of a pilot stage, in that premix fuel with a higher momentum, preferably across to the flow of combustion air, in the swirl chamber is introduced.
  • pilot fuel i. of fuel for the Realization of a pilot stage
  • premix fuel with a higher momentum, preferably across to the flow of combustion air, in the swirl chamber is introduced.
  • the burner is in a Operated diffusion mode.
  • the fuel is load-dependent distributes the first and second fuel feeds placed in the burner.
  • the Brenners is in a first operating state in the Essentially the total amount of fuel over or the first fuel feeds supplied and over the first group of fuel outlets in the Combustion air flow introduced, and in one further operating state at least a part of total amount of fuel over at least one of second fuel supply to the second group of fuel discharge openings in the combustion air flow brought in.
  • the burner is operated in a heat generator, so can in a part load condition of the heat generator of entire fuel over the first fuel feeds be fed, and in full load operation of the Heat generator the fuel on the first fuel supplies and one or more second fuel feeds be split.
  • fuel on the first and second Fuel feeds can be the distribution also control according to other company sizes. So can the Fuel, for example, depending on measured combustion chamber pulsations of a gas turbine, pollutant emissions, measured material temperatures, from that through a flame position sensor detected flame position or other measuring or Operating parameters on the first and second fuel feeds be distributed.
  • the one or more second fuel feeds by which the amount of premix fuel, the over the second group of fuel outlet openings is injected into the swirling space, and thus also the fuel pre-pressure - independent of the amount of premix fuel can be adjusted can, which flows over the first fuel supply, can be a simple adjustment of the mixture distribution and the quality of mixing to different boundary conditions to reach. Furthermore, by this configuration also a balance of different Wobbe numbers achieved by, for example, the first Fuel feeds a certain power or carry a certain volume flow and the rest of the Power or the volumetric flow over the second Fuel feeds is driven.
  • the invention also includes such embodiments one in which next to first and second also third, fourth, etc.
  • Brennstoffzu Crystalugen available and be fueled independently.
  • a burner which can be used by way of example for carrying out the method according to the invention consists of a swirl generator for a combustion air flow, a swirl space and means for introducing fuel into the Combustion air flow, wherein the swirl generator combustion air inlet openings for the tangential in the Having swirling space entering combustion air flow, the means for introducing fuel into the Combustion air flow one or more first fuel feeds with a first group of im Essentially arranged in the direction of the burner axis Fuel outlet openings for a first amount of premix fuel include and the burner one or several second fuel feeds with a second Group of essentially in the direction of the burner axis arranged fuel outlet openings for a second fuel quantity, preferably a premix fuel quantity, which second fuel feeds independent of the first fuel supply (s) be acted upon with fuel is / are.
  • the burner is characterized in the described Preferred variant characterized in that in the swirl chamber an inner body is arranged, wherein the fuel outlet openings at least a second fuel supply essentially in the direction of the burner axis distributed on the inner body are arranged.
  • Inner body is a preferred Embodiment to a fuel lance
  • the Swirl space is arranged on the burner axis.
  • one or more of the first Groups of fuel outlets in the area at least one of the combustion air inlet openings arranged.
  • the exemplary Brenners are also some of the second fuel feeders right next to the first fuel feeds, preferably parallel to these, arranged. This should be at least a second fuel supply provided next to each first fuel supply be.
  • the second Fuel supplies also independent of the first fuel supply in a symmetrical arrangement can be provided on the swirl generator.
  • the geometry the swirl generator is irrelevant here. So can conical swirl generators, as described in the beginning mentioned prior art documents are known, for example, with two, four or more Air inlet slots, are used. Others too Geometries, such as cylindrical swirl generators or cylindrical swirl generators with conical or cylindrical Inner bodies can be used.
  • the second fuel feeds are in an embodiment of the burner on the outer shell of the swirl body and in particular to the Air inlet slots are arranged along this.
  • Essential in the present burner is that the second fuel feeds a plurality of substantially in the direction of the burner axis distributed fuel outlet openings have sufficient To be able to achieve premixing.
  • the outlet openings are usually on parallel or under one a conical shape of the swirl generator or inner body predetermined angle to the burner axis extending Axes.
  • the second fuel outlet openings the second fuel feeds in comparison to the first fuel outlets other mutual distances or flow cross sections exhibit.
  • the respective fuel outlets also the same mutual Have distances, but offset from each other be. This leads to a more uniform injection of the premix fuel into the swirl space.
  • the first fuel outlet openings over the entire axial extent of Combustion air inlet openings, the second fuel outlet openings but only in a certain be arranged axial portion.
  • first fuel outlet openings only in a first axial portion and the second fuel outlets only in a subsequent to the first subarea provide second axial portion - or vice versa.
  • first and second fuel feeds with the Premix fuel are these with different Equipped connections.
  • Means for independent regulation or Control of premix fuel supply to the first and the second fuel supply lines Preferably, in addition Means for independent regulation or Control of premix fuel supply to the first and the second fuel supply lines.
  • the different supply for example, by a suitable control valve can be controlled.
  • the burners are in strong Schematically illustrated embodiment, so that only in each case at a position for the respective explanation essential features highlighted are.
  • the further design of the illustrated Brenner is the expert among others from the The prior art cited common documents that an integral part of the present Show description.
  • the fuel will furthermore referred to as premix fuel; it understands itself that part of the total fuel amount in certain load ranges also as pilot fuel to further increase the flame stability can be introduced. Feeders for pilot fuel are not shown in any of the figures, as they are are not essential to the invention; in knowledge of Prior art, the expert but this without More in the example shown burner implement, if he deems it necessary.
  • FIG. 1 shows a first example of a burner represented, with the inventive method can be operated.
  • FIG. 1a shows an arrangement the first 5 and second fuel feeds 7 for a cone-shaped swirl burner 1.
  • the outer formwork of this swirl body 1 is connected to the Einströmkanten the air inlet slots, as they Person skilled in the art are known, in addition the first feed 5 for a first premix fuel quantity P1 a second feed 7 for a second Premix fuel quantity P2 arranged.
  • These two Feeder can be independently with each other Premix fuel, that is, for example the mass flow of the second premix fuel P2, which flows through the second supply 7, independently from the mass flow of the first premix fuel P1 can be adjusted by the first feeder 5. This is due to the different feed lines indicated by the arrows.
  • the burner is in vertical section represented by the burner axis 3.
  • the two shells 1a, 1b of the swirl body to recognize are with the actual Burner axis 3 offset symmetry axes 3a, 3b arranged, such that between them air inlet slots 4 is formed for the combustion air 11 are.
  • the first Feed channel 5 with the corresponding outlet openings 6 to recognize the premix fuel.
  • the second supply channel 7 with the corresponding second outlet openings 8 arranged. Both feed channels show with their outlet openings 6, 8 for incoming combustion air flow.
  • FIG. 3 shows a variant of the arrangement of the feed channels and the outlet openings.
  • the conical swirl body 1 with each a first and a second supply channel 5, 7 for Illustration shown in a simplified form.
  • the two feed channels are also here parallel next to each other on - not shown - tangential air inlet slot.
  • the two feed channels have the same number of Holes n1 and n2 on.
  • the holes are even distributed along the burner axis 3, wherein the axial arrangement of the holes 8 of the second feed 7 at a gap to the axial arrangement of the holes. 6 set the first premix fuel supply is.
  • the number of holes n1 and n2 also be different from each other.
  • FIG. 4 shows an arrangement in which the Holes 6 of the first feed channel 5 in a conventional manner in the direction of the burner axis 3 in even mutual distance are distributed.
  • the holes 8 of the second feed channel 7 are in this example only over the first half of the swirl space towards the Burner axis 3 distributed. Through this hole arrangement can an enrichment of the fuel mixture in the burner center by connecting this second stage - the Premix fuel supply via the second feed 7 - be achieved.
  • FIG. 5 shows a similar arrangement in which the Holes 8 of the second feed channel also, as in Figure 4 in the first region of the swirl space in the direction the burner axis 3 are arranged.
  • the holes 6 of the first feed channel. 5 not over the entire length of the swirl space in the direction the burner axis 3 distributed, but only in second, directed to the burner exit part.
  • the Number n1 or n2 of the respective holes can vary depending on Requirements are selected. These can be the same or also be different.
  • a comparable embodiment with interchanged Arrangement of the outlet holes 6, 8 in the direction of Burner axis 1 show the figures 6 and 7.
  • the enrichment can be the outer region of the burner, that is the of Combustion chamber facing area, with the second Reach level.
  • a desired concentration gradient of the fuel be adjusted along the burner axis.
  • FIG. 8 shows another example of the embodiment a burner according to the invention in strong schematic representation.
  • a purely cylindrical swirl body 1 used.
  • the two in the figure, indicated feeds 5, 7 with the first 6 and second outlet openings 8 can in be configured and arranged in the same way as this already in connection with the preceding Figures was explained.
  • FIG. 9 shows this again with the first 5 and the second feed channel 7 with the corresponding outlet openings 6, 8.
  • these feed channels are side by side in the outer formwork of the swirl body. 1 arranged.
  • FIG. 10 shows an example of an embodiment the burner according to the invention, wherein the second Feed channel 7 arranged on the cylindrical inner body 9 is.
  • the second supply channel 7 is in this case preferably arranged inside the outer wall of the inner body 9, although in this case too, as with the previous ones Examples a symmetrical distribution of several Feed channels 7 are selected around the burner axis 3 should. However, in this example it is also possible the second supply 7 centrally in the inner body. 9 let go, in which case the outlet openings 8 via corresponding radial channels for Twist space 2 must be formed. In the front itself tapered portion of the inner body 9 can also one or more additional outlet openings with a correspondingly separate feed for fuel be provided (as a pilot stage) or air.
  • FIGS. 11 to 14 schematically show examples for further swirl generator geometries with which the present invention can be realized.
  • FIGS. 11 to 14 schematically show examples for further swirl generator geometries with which the present invention can be realized.
  • FIGS. 11 to 14 are from top to bottom with a burner conical swirl body 1 and conical inner body 9, a burner with in the form of an inverted cone trained swirl body 1 and conical inner body 9, a burner with tulip-shaped and a burner with funnel-shaped swirl body 1 shown.
  • the second feeds both in the swirl body 1 as well as in the inner body. 9 be arranged.
  • All geometries shown here are common that the axial flow area of the Swirl space in the area of the swirl body to the burner outlet increases. This is not absolutely necessary Prerequisite for a premix burner, but is an advantageous embodiment of Swirl generator.
  • FIGS. 17 and 18 show schematically two examples of the structure of a swirl body in cross-section, as with a burner can be used.
  • Figure 17 is a swirl body represented, which are offset from four against each other Shells 1a, 1b, 1c, 1d composed in the illustrated arrangement four tangential air inlet slots 4 form.
  • the cups can be shown in the picture Cross-section different, for example circular segment, elliptical or oval, be formed.
  • at the dargestllten configuration are the body part 1a, 1b, 1c, 1d arranged so that their respective central axes 3a, 3b, 3c, 3d offset to the actual Burner axis are arranged.
  • the design of a Burner, with or without premix tube, with one such geometry can in detail that of EP 321 809 or EP 0780629.
  • FIG. 18 shows a monolithic swirl body 1 with tangential air inlet openings introduced therein 4 shown.
  • the air inlet openings 4 For example, as milled air entry slots or as rows of air intake holes be educated.
  • outlet openings in the axial To arrange direction equidistant, as it is in all Drawings is implied.
  • FIG. 19 to 21 Further very advantageous embodiments of a Burner can be seen in Figures 19 to 21.
  • the illustrated burners include the cone-shaped Swirl body 1, in its outer formwork at the inflow edges the air inlet slots a first group of Outlet openings 6 are arranged for premixed gas.
  • the burners are still with a central fuel lance 12 fitted, the at their combustion chamber side End, i. at its tip, have a nozzle can - as in this example - be used for one liquid fuel 13 or for a pilot fuel is usable.
  • nozzle Around this nozzle around in known Way outlet openings for shielding air 14 is provided be.
  • the illustrated Burner another fuel supply to a second group of outlet openings 8 in the fuel lance 12 on.
  • the outlet openings 8 of the second Group are essentially in the direction of the burner axis arranged in the lateral surface of the fuel lance 12, as can be seen in Figures 19 to 21, and preferably radially symmetrical about the axis of Fuel lance 12 distributed. They allow the radial directed from the fuel lance 12 outward Injecting fuel into the swirl chamber.
  • the number and size of these outlet openings 8 and their Distribution on the fuel lance 12 - in axial Direction and circumferential direction - is dependent on the respective requirements of the burner such as extinction limits, Pulsations and setback limits selected.
  • the fuel lance 12 may be relatively far in extend the swirl space (see Figures 19 and 20; “Long Lance EV Brenner ”) or just a short piece in protrude the swirl space (Fig. 21).
  • the second group of outlet openings 8 preferably in rear, i. farthest from the combustion chamber removed, area of the swirl space at the fuel lance 12 arranged as indicated in the figures.
  • the embodiment of Fig. 19 leaves a very advantageous stepped operation of the burner, at both the fuel feeds to the first Group of outlet openings 6 and the fuel feeds to the second group of outlet openings 8 are fed with premix gas.
  • the Independent Control possibility of the fuel supply to the first and second group of outlet openings 6, 8 allows one to the respective operating conditions of the Burner or the burner using the system optimally adapted mode of operation.
  • the second group of Outlets 8 are located on the fuel lance 12 in this example, outlet openings of the first Group of outlet openings 6 on the swirl body. 1 opposite, so that the first and second group of Outlet openings 6, 8 in certain operating conditions for example, also exclusively, i. without the each other group, be fueled can.
  • the one shown in the figure Burner with appropriate supply of fuel and corresponding embodiment of the second group of Outlets over these outlet openings 8 also be operated in diffusion mode.
  • the spatial Separation of the outlet openings 8 of the injection liquid fuel 13 at the top of the fuel lance 12 can be contrasted in this case known burners the penetration of fuel droplets or fuel vapor into the fuel supply system for the second group of outlet openings 8 avoid.
  • FIG. 20 shows an embodiment of a burner, which are also in the very advantageous tiered Operation can be operated.
  • the outlet openings 6 closed or there are no outlet openings 6 provided because their function of the outlet openings 8 is taken on the fuel lance 12.
  • Figure 21 shows the same burner with shortened Fuel lance 12, for the same operation is trained.
  • a gas turbine can be with such a burner from the ignition operate up to the base load without a pilot stage.
  • the supply of fuel to stages 1 and 2 is controlled independently via suitable valves or regulated.
  • Figures 23 and 24 show examples of the feed a fuel amount P0 to the burner. By both Examples branches the fuel line to the Total fuel quantity P0 to a fuel quantity P1 for the first group of outlet openings 6 and on a fuel amount P2 for the second group of Distribute outlet openings 8.
  • FIG 23 the discontinuation of the distribution or mass flow ratio via one valve 15 and 16 in each of the branches.
  • Figure 24 shows an embodiment in which a valve 16 before the Branching to set the total fuel quantity P0 and another valve 15 in the branch to first group of outlet openings 6 is arranged.
  • the valve 15 can be here also the Change the mass flow ratio between P1 and P2.
  • the valve 15 also in the branch to the second group of Outlets 8 may be arranged.
  • the mass flow ratio P1 / P2 by controlling the Valves depending on the operating condition of the Brenner changed.
  • the change of the mass flow ratio may vary depending on different measuring and operating characteristics are controlled or regulated, like this already in a previous part of the this description has been carried out.
  • the Embodiments shown are independent of the Burner geometry and can be with all burners of use previous embodiments.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Abstract

L'invention concerne un procédé pour l'exploitation d'un brûleur qui comprend au moins une première alimentation en combustible (5) pourvue d'un premier groupe d'orifices de sortie de combustible (6) disposées pratiquement dans le sens d'un axe de brûleur (3) pour une première quantité de combustible prémélangé ainsi qu'une ou plusieurs deuxièmes alimentations en combustible (7) pourvues d'un deuxième groupe d'orifices de sortie de combustible (8) disposées pratiquement dans le sens de l'axe de brûleur (3) pour une deuxième quantité de combustible prémélangé. Le procédé selon l'invention est caractérisé en ce que les deuxièmes alimentations en combustible (7) peuvent être alimentées en combustible indépendamment de la première alimentation en combustible (5). Selon le procédé de l'invention, les deux alimentations en combustible (5, 7) sont exploitées avec le même combustible. Grâce à ce procédé d'exploitation d'un brûleur, il est possible de régler des conditions de mélange optimales, même pour des charges, des qualités de gaz ou des températures de préchauffage de gaz différentes.

Claims (7)

  1. Procédé pour faire fonctionner un brûleur, qui présente au moins une première alimentation en combustible (5) avec un premier groupe d'ouvertures de sortie de combustible (6) disposées essentiellement dans la direction d'un axe du brûleur (3) pour l'introduction d'une première quantité de combustible de prémélange dans une chambre de tourbillonnement et une ou plusieurs deuxièmes alimentations en combustible (7) avec un deuxième groupe d'ouvertures de sortie de combustible (8) disposées essentiellement dans la direction de l'axe du brûleur (3), les deuxièmes alimentations en combustible (7) pouvant être sollicitées avec du combustible indépendamment de la première alimentation en combustible (5), l'apport de combustible étant commandé ou régulé par le biais des premières alimentations en combustible (5) séparément de l'apport de combustible par le biais des deuxièmes alimentations en combustible (7),
    caractérisé en ce que
    les première(s) et deuxième(s) alimentations en combustible (5, 7) sont alimentées en le même combustible.
  2. Procédé selon la revendication 1, caractérisé en ce que les première(s) et deuxième(s) alimentations en combustible (5, 7) sont alimentées en combustible de prémélange.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que les première(s) et deuxième(s) alimentations en combustible (5, 7) sont alimentées en combustible gazeux.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le combustible est introduit dans le brûleur de manière répartie en fonction de la charge sur les premières (5) et deuxièmes (7) alimentations en combustible.
  5. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le combustible est introduit dans le brûleur de manière répartie en fonction du rapport air-combustible du brûleur sur les premières (5) et deuxièmes (7) alimentations en combustible.
  6. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que dans un premier état de fonctionnement, essentiellement toute la quantité de combustible est acheminée au brûleur par le biais de la ou des premières alimentations en combustible (5) et est introduit dans le courant d'air de combustion par le biais du premier groupe d'ouvertures de sortie de combustible (6), et en ce que dans un autre état de fonctionnement, au moins une partie de la quantité totale de combustible est acheminée au brûleur par le biais d'au moins l'une des deuxièmes alimentations en combustible (7) avec le deuxième groupe d'ouvertures de sortie de combustible (8).
  7. Procédé pour faire fonctionner un brûleur selon les revendications 1 à 3 dans un générateur de chaleur, caractérisé en ce que, dans un état de charge partielle du générateur de chaleur, tout le combustible est acheminé par le biais des premières alimentations en combustible (5), et en ce qu'au moins en mode de fonctionnement à pleine charge du générateur de chaleur, le combustible est réparti sur les premières alimentations en combustible (5) et au moins une deuxième alimentation en combustible (7).
EP01951833A 2000-06-15 2001-06-13 Procede pour l'exploitation d'un bruleur a premelange avec injection etagee de gaz Expired - Lifetime EP1292795B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05101530.3A EP1559955B1 (fr) 2000-06-15 2001-06-13 Bruleur

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10029607 2000-06-15
DE10029607A DE10029607A1 (de) 2000-06-15 2000-06-15 Brenner mit gestufter Vormischgas-Eindüsung
DE10062900 2000-12-16
DE10062900 2000-12-16
PCT/IB2001/001129 WO2001096785A1 (fr) 2000-06-15 2001-06-13 Procede pour l'exploitation d'un bruleur et bruleur a injection etagee de gaz premelange

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WO2006103257A1 (fr) * 2005-03-31 2006-10-05 Alstom Technology Ltd Bruleur de premelange destine a une chambre de combustion de turbine a gaz
US8801429B2 (en) 2006-03-30 2014-08-12 Alstom Technology Ltd Burner arrangement
EP2179222B2 (fr) † 2007-08-07 2021-12-01 Ansaldo Energia IP UK Limited Brûleur pour une chambre de combustion d'un turbogroupe
DE102008053755A1 (de) 2008-10-28 2010-04-29 Pfeifer, Uwe, Dr. Register Pilotbrennersystem für Gasturbinen
US9249689B2 (en) 2010-05-26 2016-02-02 Alstom Technology Ltd Combined cycle power plant with flue gas recirculation
US9828912B2 (en) 2010-05-26 2017-11-28 Ansaldo Energia Switzerland AG Combined cycle power plant with flue gas recirculation
EP2538139A2 (fr) 2011-06-20 2012-12-26 Alstom Technology Ltd Procédé de fonctionnement d'un dispositif de combustion ainsi que le dispositif de combustion destiné à la mise en oeuvre du procédé
US9249979B2 (en) 2011-06-20 2016-02-02 Alstom Technology Ltd. Controlling a combustion device to lower combustion-induced pulsations by changing and resetting fuel stagings at different rates of change

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WO2001096785A1 (fr) 2001-12-20
US20030152880A1 (en) 2003-08-14
AU2001272682A1 (en) 2001-12-24
JP4625609B2 (ja) 2011-02-02
EP1292795A1 (fr) 2003-03-19
US6769903B2 (en) 2004-08-03
JP2004507701A (ja) 2004-03-11

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