EP1105678B1 - Operating method for a hybrid burner - Google Patents

Operating method for a hybrid burner Download PDF

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Publication number
EP1105678B1
EP1105678B1 EP99952350A EP99952350A EP1105678B1 EP 1105678 B1 EP1105678 B1 EP 1105678B1 EP 99952350 A EP99952350 A EP 99952350A EP 99952350 A EP99952350 A EP 99952350A EP 1105678 B1 EP1105678 B1 EP 1105678B1
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EP
European Patent Office
Prior art keywords
premix
supply duct
burner
fuel
air supply
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EP99952350A
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German (de)
French (fr)
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EP1105678A1 (en
Inventor
Carsten Tiemann
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Siemens AG
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Siemens AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/002—Supplying water
    • 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
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/002—Supplying water
    • F23L7/005—Evaporated water; Steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2206/00—Burners for specific applications
    • F23D2206/10—Turbines
    • 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

Definitions

  • the invention relates to a method for operating a hybrid burner 2. according to the preamble of claim 1 or 2.
  • a hybrid burner is also known from EP 0 580 683 B1.
  • the Hybrid burner has a pilot burner system that is concentric is surrounded by a premix burner.
  • the pilot burner system has a central oil supply with one around it arranged around the inner gas supply channel.
  • the gas supply channel is surrounded by a concentrically arranged interior Air supply duct.
  • the pilot burner system is in turn surrounded from a supply channel system for various fuels, where this supply channel system a first gas supply channel and has a second gas supply channel and an oil supply channel.
  • An outer air supply duct surrounds the supply duct system of the fuels, the channels of this supply channel system each open into the outer air supply duct.
  • the outer Air supply duct and the fuel supply duct system form the premix burner of the hybrid burner.
  • the hybrid burner can be operated in different operating modes, being through the outer and inner air supply ducts Air and through one or more of the fuel supply serving channels fuel are supplied to a combustion.
  • a first diffusion mode is known, wherein combustion via the pilot burner's first gas supply channel Coal gas, via the second gas supply duct of the premix burner also coal gas and via the two air supply ducts Air is supplied.
  • fuel and air become like the first Diffusion mode and also water vapor over the first gas supply channel supplied.
  • a third diffusion mode fuel and air become like the first Diffusion mode and water through the oil supply channel fed.
  • the object of the invention is to provide a method for operating a hybrid burner with a NO x reduction.
  • the object is achieved by a method according to the preamble of claim 1, in which oil via the fuel supply channel and water in a liquid state via the premixed fuel supply channel designed for supplying oil be incinerated.
  • the invention is based on the knowledge that during operation of the hybrid burner in the second or third diffusion mode according to EP 0 580 683 B1, the fanning of so-called Combustion chamber vibrations can be favored if the amount of water vapor supplied per unit of time Water vapor limit, or the supplied per unit of time Amount of water exceeds a water limit.
  • Combustion chamber vibrations occur when operating the hybrid burner standing pressure vibrations forming in the combustion chamber to understand.
  • the combustion chamber vibrations can to a high mechanical load on the combustion chamber lead forming parts of the gas turbine.
  • the invention starts from the further realization that the water limit and the Water vapor limit depend on which channel of the Hybrid burner the water is supplied.
  • the water is supplied via the premix fuel channel.
  • the water limit value or the water vapor limit value can be much higher than in the case of a hybrid burner which is operated after the first or second diffusion operation according to EP 0 580 683 B1.
  • the water supplied is used to reduce NO x during combustion of the fuel and air supplied.
  • the higher the amount of water supplied per unit of time the higher the NO x reduction rate.
  • the amount of water that can be supplied per unit of time is very much higher than in a method according to the prior art, and consequently the NO x emission is also reduced.
  • the output of the hybrid burner can be higher with the same NO x emission, because because a larger amount of water can be supplied, the amount of fuel and air combustible per unit of time can be correspondingly larger.
  • the task directed to the method is alternatively solved, by a method according to the preamble of the claim 2, where Fuel gas only through the Fuel feed channel and water via the premix fuel feed channel is fed.
  • Water is preferably in the liquid state via the premix fuel feed channel fed to the feed of Oil is designed. Water vapor is more preferred Premixed fuel feed channel fed to the feed is designed by fuel gas.
  • the figure shows a schematically and not to scale Hybrid burner.
  • a hybrid burner 20 is not closer to one Shown combustion chamber of a gas turbine.
  • the Hybrid burner has a pilot burner 21 and a premix burner 22 on.
  • the pilot burner 21 includes a fuel supply channel 1 for liquid or gaseous fuel, one Gas fuel supply channel 2 for gaseous fuel and an air supply duct 3.
  • the premix burner 22 includes one first premix fuel supply channel 8 and a second premix fuel supply channel 16, each for feeding Fuel gas are executed, a premix air supply duct 4 and a third premix fuel supply channel 12 for supply running on liquid fuel.
  • the gas fuel supply channel 2, the air supply duct 3, the first Premix fuel feed channel 8, the second premix fuel feed channel 16, the premix air supply duct 4 and the third premix fuel supply channel 12 are each as Ring channel formed.
  • the fuel supply channel 1 is along a main axis 30 centrally located. This is surrounded by the gas fuel supply channel 2, which in turn is surrounded by the air supply duct 3 is.
  • the air supply duct 3 has a mouth 31 which the Forms the mouth of the pilot burner.
  • the air supply duct 3 is surrounded by in front of its mouth 31 the third premix fuel supply channel 12.
  • the air supply channel 3 is still surrounded by the first premix fuel feed channel 8, which in turn is surrounded by the second Premix fuel feed channel 16.
  • the pilot burner 21 and the Premixed fuel supply channels 8, 12 and 16 are surrounded by the outer air supply duct 4.
  • the third premix fuel supply duct 12 opens into the outer air supply duct 4.
  • the first premix fuel supply channel 8 and the second premix fuel supply channel 16 open towards the mouth 31 viewed in front of the third premix fuel feed channel 12 into the premix air supply duct 4.
  • the hybrid burner 20 has an orifice 23 with which it flows in a combustion chamber 24, not shown, of a gas turbine empties.
  • the hybrid burner 20 is also in a so-called gas diffusion mode operable, being gaseous fuel exclusively via the fuel supply channel 1 or the gas fuel supply channel 2, air through the air supply duct 3 or the premix air supply duct 4 and water via the premix air supply duct 8, 12 and / or 16 takes place.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

The invention relates to an operating method for a hybrid burner (20). The hybrid burner (20) has a premix burner (22) and a pilot burner (21). The premix burner (22) comprises a premix air supply duct (4) that leads into a premix fuel supply duct (8, 12, 16). The pilot burner (21) comprises an air supply duct (3) and a fuel supply duct (1, 2) for liquid and/or gaseous fuel. When the hybrid burner (20) is in operation, air is fed via the air supply duct (3) and the premix air supply duct (4), oil is fed via the fuel supply duct (1) and water is fed via the premix fuel supply duct (8, 12, 16).

Description

Die Erfindung betrifft ein Verfahren zum Betrieb eines Hybridbrenners gemäß dem Oberbegriff des Anspruchs 1 bzw. 2.The invention relates to a method for operating a hybrid burner 2. according to the preamble of claim 1 or 2.

Ein solcher Brenner ist aus Dokument US-A-5 451 160 schon bekannt.Such a burner is already known from document US-A-5 451 160 known.

Ein Hybridbrenner ist auch bekannt aus der EP 0 580 683 B1. Der Hybridbrenner weist ein Pilotbrennersystem auf, das konzentrisch von einem Vormischbrenner umgeben ist. Das Pilotbrennersystem weist eine zentrale Ölzuführung mit einem um diese herum angeordneten inneren Gaszufuhrkanal auf. Der Gaszufuhrkanal ist umgeben von einem konzentrisch angeordneten inneren Luftzufuhrkanal. Das Pilotbrennersystem ist wiederum umgeben von einem Zufuhrkanalsystem für verschiedene Brennstoffe, wobei dieses Zufuhrkanalsystem einen ersten Gaszufuhrkanal und einen zweiten Gaszufuhrkanal und einen Ölzufuhrkanal aufweist. Ein äußerer Luftzufuhrkanal umgibt das Zufuhrkanalsystem der Brennstoffe, wobei die Kanäle dieses Zufuhrkanalsystems jeweils in den äußeren Luftzufuhrkanal münden. Der äußere Luftzufuhrkanal und das Zufuhrkanalsystem der Brennstoffe bilden den Vormischbrenner des Hybridbrenners.A hybrid burner is also known from EP 0 580 683 B1. The Hybrid burner has a pilot burner system that is concentric is surrounded by a premix burner. The pilot burner system has a central oil supply with one around it arranged around the inner gas supply channel. The gas supply channel is surrounded by a concentrically arranged interior Air supply duct. The pilot burner system is in turn surrounded from a supply channel system for various fuels, where this supply channel system a first gas supply channel and has a second gas supply channel and an oil supply channel. An outer air supply duct surrounds the supply duct system of the fuels, the channels of this supply channel system each open into the outer air supply duct. The outer Air supply duct and the fuel supply duct system form the premix burner of the hybrid burner.

Der Hybridbrenner ist in verschiedenen Betriebsarten betreibbar, wobei über den äußeren und den inneren Luftzufuhrkanal Luft und über einen oder mehrere der der Brennstoffzuführung dienende Kanäle Brennstoff einer Verbrennung zugeführt werden. Dabei ist eine erste Diffusionsbetriebsart bekannt, wobei der Verbrennung über den ersten Gaszufuhrkanal des Pilotbrenners Kohlegas, über den zweiten Gaszufuhrkanal des Vormischbrenners ebenfalls Kohlegas und über die beiden Luftzufuhrkanäle Luft zugeführt wird. Bei einer zweiten Diffusionsbetriebsart werden Brennstoff und Luft wie bei der ersten Diffusionsbetriebsart und darüber hinaus Wasserdampf über den ersten Gaszufuhrkanal zugeführt. Bei einer dritten Diffusionsbetriebsart werden Brennstoff und Luft wie bei der ersten Diffusionsbetriebsart und darüber hinaus Wasser über den Ölzufuhrkanal zugeführt.The hybrid burner can be operated in different operating modes, being through the outer and inner air supply ducts Air and through one or more of the fuel supply serving channels fuel are supplied to a combustion. A first diffusion mode is known, wherein combustion via the pilot burner's first gas supply channel Coal gas, via the second gas supply duct of the premix burner also coal gas and via the two air supply ducts Air is supplied. In a second diffusion mode fuel and air become like the first Diffusion mode and also water vapor over the first gas supply channel supplied. In a third diffusion mode fuel and air become like the first Diffusion mode and water through the oil supply channel fed.

Aufgabe der Erfindung ist es, ein Verfahren zum Betrieb eines Hybridbrenners mit einer NOx-Reduktion anzugeben.The object of the invention is to provide a method for operating a hybrid burner with a NO x reduction.

Erfindungsgemäß wird die Aufgabe gelöst, durch ein Verfahren nach dem Oberbegriff des Patentanspruchs 1, bei dem Öl über den Brennstoffzufuhrkanal und Wasser in flussigem Zustand über den zur Zuführung von Öl ausgelegten Vormischbrennstoffzufuhrkanal einer Verbrennung zugeführt werden.According to the invention, the object is achieved by a method according to the preamble of claim 1, in which oil via the fuel supply channel and water in a liquid state via the premixed fuel supply channel designed for supplying oil be incinerated.

Die Erfindung geht von der Erkenntnis aus, daß beim Betrieb des Hybridbrenners in der zweiten oder dritten Diffusionsbetriebsart nach der EP 0 580 683 B1 die Anfachung von sogenannten Brennkammerschwingungen begünstigt sein kann, wenn die pro Zeiteinheit zugeführte Menge an Wasserdampf einen Wasserdampfgrenzwert, bzw. die pro Zeiteinheit zugeführte Menge an Wasser einen Wassergrenzwert überschreitet. Unter Brennkammerschwingungen sind sich beim Betrieb des Hybridbrenners in der Brennkammer ausbildende, stehende Druckschwingungen zu verstehen. Die Brennkammerschwingungen können zu einer hohen mechanischen Belastung der die Brennkammer bildenden Teile der Gasturbine führen. Die Erfindung geht von der weiteren Erkenntnis aus, daß der Wassergrenzwert und der Wasserdampfgrenzwert davon abhängen, über welchen Kanal des Hybridbrenners das Wasser zugeführt wird.The invention is based on the knowledge that during operation of the hybrid burner in the second or third diffusion mode according to EP 0 580 683 B1, the fanning of so-called Combustion chamber vibrations can be favored if the amount of water vapor supplied per unit of time Water vapor limit, or the supplied per unit of time Amount of water exceeds a water limit. Under Combustion chamber vibrations occur when operating the hybrid burner standing pressure vibrations forming in the combustion chamber to understand. The combustion chamber vibrations can to a high mechanical load on the combustion chamber lead forming parts of the gas turbine. The invention starts from the further realization that the water limit and the Water vapor limit depend on which channel of the Hybrid burner the water is supplied.

Bei einem nach dem erfindungsgemäßen Verfahren betriebenen Hybridbrenner wird das Wasser über den Vormischbrennstoffkanal zugeführt. Dadurch kann der Wassergrenzwert, bzw. der Wasserdampfgrenzwert sehr viel höher sein, als bei einem Hybridbrenner, der nach dem ersten oder zweiten Diffusionsbetrieb nach der EP 0 580 683 B1 betrieben wird. Das zugeführte Wasser dient der NOx-Reduktion während einer Verbrennung vom zugeführten Brennstoff und Luft. Je höher die pro Zeiteinheit zugeführte Menge an Wasser ist, um so höher ist die NOx-Reduktionsrate. Bei dem erfindungsgemäßen Verfahren ist im Vergleich zu einem Verfahren nach dem Stand der Technik die pro Zeiteinheit zuführbare Wassermenge sehr viel höher und folglich ist auch die NOx-Emission verringert. Des weiteren kann bei gleicher NOx-Emission die Leistung des Hybridbrenners höher sein, denn weil eine größere Wassermenge zuführbar ist, kann die pro Zeiteinheit verbrennbare Menge an Brennstoff und Luft entsprechend größer sein.In the case of a hybrid burner operated according to the method according to the invention, the water is supplied via the premix fuel channel. As a result, the water limit value or the water vapor limit value can be much higher than in the case of a hybrid burner which is operated after the first or second diffusion operation according to EP 0 580 683 B1. The water supplied is used to reduce NO x during combustion of the fuel and air supplied. The higher the amount of water supplied per unit of time, the higher the NO x reduction rate. In the method according to the invention, the amount of water that can be supplied per unit of time is very much higher than in a method according to the prior art, and consequently the NO x emission is also reduced. Furthermore, the output of the hybrid burner can be higher with the same NO x emission, because because a larger amount of water can be supplied, the amount of fuel and air combustible per unit of time can be correspondingly larger.

Die auf das Verfahren gerichtete Aufgabe wird alternativ gelöst, durch ein Verfahren nach dem Oberbegriff des Patentanspruchs 2, bei dem Brenngas ausschließlich über den Brennstoffzufuhrkanal und Wasser über den Vormischbrennstoffzufuhrkanal zugeführt wird.The task directed to the method is alternatively solved, by a method according to the preamble of the claim 2, where Fuel gas only through the Fuel feed channel and water via the premix fuel feed channel is fed.

Auch bei diesem Verfahren ist die Zuführung einer größeren Menge an Wasser möglich, ohne daß es zu einer maßgeblichen Anregung von Brennkammerschwingungen kommt. Dadurch kann die NOx-Emission bei gleicher Leistung des Hybridbrenners vermindert werden. Ebenso kann bei gleicher NOx-Emission die Leistung des Hybridbrenners erhöht werden.With this method, too, it is possible to supply a larger amount of water without any significant excitation of combustion chamber vibrations. As a result, the NO x emission can be reduced with the same power of the hybrid burner. Likewise, the performance of the hybrid burner can be increased with the same NO x emission.

Vorzugsweise wird Wasser im flüssigen Zustand über den Vormischbrennstoffzufuhrkanal zugeführt, der zur Zuführung von Öl ausgelegt ist. Weiter bevorzugt wird Wasserdampf über ein Vormischbrennstoffzufuhrkanal zugeführt, der zur Zuführung von Brenngas ausgelegt ist. Dadurch ist das Verfahren auf vorhandene und bereits im Betrieb einer Gasturbine eingesetzte Hybridbrenner oder äquivalente Brenneranordnungen anwendbar. Unter äquivalenten Brennaranordnungen werden beispielsweise solche Brenneranordnungen verstanden, die räumlich voneinander getrennt einen Vormischbrenner und einen Pilotbrenner aufweisen, wobei sich deren Flammen im Betrieb gegenseitig beeinflussen.Water is preferably in the liquid state via the premix fuel feed channel fed to the feed of Oil is designed. Water vapor is more preferred Premixed fuel feed channel fed to the feed is designed by fuel gas. This sets the process on existing and already used in the operation of a gas turbine Hybrid burners or equivalent burner arrangements can be used. Equivalent Brennaranrangungen for example understood such burner arrangements that spatially apart separate a premix burner and a pilot burner have, their flames mutually in operation influence.

Die Verfahren sind anhand des in der einzigen Figur dargestellten Ausführungsbeispiels näher erläutert.The methods are based on that shown in the single figure Embodiment explained in more detail.

Die Figur zeigt einen schematisch und nicht maßstäblich dargestellten Hybridbrenner.The figure shows a schematically and not to scale Hybrid burner.

In der Figur ist ein Hybridbrenner 20 für eine nicht näher dargestellte Brennkammer einer Gasturbine dargestellt. Der Hybridbrenner weist einen Pilotbrenner 21 und einen Vormischbrenner 22 auf. Der Pilotbrenner 21 umfaßt einen Brennstoffzufuhrkanal 1 für flüssigen oder gasförmigen Brennstoff, einen Gasbrennstoffzufuhrkanal 2 für gasförmigen Brennstoff und einen Luftzufuhrkanal 3. Der Vormischbrenner 22 umfaßt einen ersten Vormischbrennstoffzufuhrkanal 8 und einen zweiten Vormischbrennstoffzufuhrkanal 16, die jeweils zur Zuführung von Brenngas ausgeführt sind, einen Vormischluftzufuhrkanal 4 und einen dritten Vormischbrennstoffzufuhrkanal 12, der zur Zuführung von flüssigem Brennstoff ausgeführt ist. Der Gasbrennstoffzufuhrkanal 2, der Luftzufuhrkanal 3, der erste Vormischbrennstoffzufuhrkanal 8, der zweite Vormischbrennstoffzufuhrkanal 16, der Vormischluftzufuhrkanal 4 und der dritte Vormischbrennstoffzufuhrkanal 12 sind jeweils als Ringkanal ausgebildet.In the figure, a hybrid burner 20 is not closer to one Shown combustion chamber of a gas turbine. The Hybrid burner has a pilot burner 21 and a premix burner 22 on. The pilot burner 21 includes a fuel supply channel 1 for liquid or gaseous fuel, one Gas fuel supply channel 2 for gaseous fuel and an air supply duct 3. The premix burner 22 includes one first premix fuel supply channel 8 and a second premix fuel supply channel 16, each for feeding Fuel gas are executed, a premix air supply duct 4 and a third premix fuel supply channel 12 for supply running on liquid fuel. The gas fuel supply channel 2, the air supply duct 3, the first Premix fuel feed channel 8, the second premix fuel feed channel 16, the premix air supply duct 4 and the third premix fuel supply channel 12 are each as Ring channel formed.

Entlang einer Hauptachse 30 ist der Brennstoffzufuhrkanal 1 zentral angeordnet. Dieser ist umgeben von dem Gasbrennstoffzufuhrkanal 2, der wiederum von dem Luftzufuhrkanal 3 umgeben ist. Der Luftzufuhrkanal 3 weist eine Mündung 31 auf, die die Mündung des Pilotbrenners bildet.The fuel supply channel 1 is along a main axis 30 centrally located. This is surrounded by the gas fuel supply channel 2, which in turn is surrounded by the air supply duct 3 is. The air supply duct 3 has a mouth 31 which the Forms the mouth of the pilot burner.

Der Luftzufuhrkanal 3 ist vor seiner Mündung 31 umgeben von dem dritten Vormischbrennstoffzufuhrkanal 12. Der Luftzufuhrkanal 3 ist weiterhin umgeben von dem ersten Vormischbrennstoffzufuhrkanal 8, der wiederum umgeben ist von dem zweiten Vormischbrennstoffzufuhrkanal 16. Der Pilotbrenner 21 und die Vormischbrennstoffzufuhrkanäle 8, 12 und 16 sind umgeben von dem äußeren Luftzufuhrkanal 4. Der dritte Vormischbrennstoffzufuhrkanal 12 mündet in den äußeren Luftzufuhrkanal 4. Der erste Vormischbrennstoffzufuhrkanal 8 und der zweite Vormischbrennstoffzufuhrkanal 16 münden in Richtung zur Mündung 31 betrachtet vor dem dritten Vormischbrennstoffzufuhrkanal 12 in den Vormischluftzufuhrkanal 4.The air supply duct 3 is surrounded by in front of its mouth 31 the third premix fuel supply channel 12. The air supply channel 3 is still surrounded by the first premix fuel feed channel 8, which in turn is surrounded by the second Premix fuel feed channel 16. The pilot burner 21 and the Premixed fuel supply channels 8, 12 and 16 are surrounded by the outer air supply duct 4. The third premix fuel supply duct 12 opens into the outer air supply duct 4. The first premix fuel supply channel 8 and the second premix fuel supply channel 16 open towards the mouth 31 viewed in front of the third premix fuel feed channel 12 into the premix air supply duct 4.

Der Hybridbrenner 20 weist eine Mündung 23 auf, mit der er in eine nicht näher dargestellte Brennkammer 24 einer Gasturbine mündet.The hybrid burner 20 has an orifice 23 with which it flows in a combustion chamber 24, not shown, of a gas turbine empties.

Bei einem Diffusionsbetrieb des Hybridbrenners wird Luft jeweils über den Luftzufuhrkanal 3 und über den Vormischluftzufuhrkanal 4, Öl über den Brennstoffzufuhrkanal 1 und Wasser im flüssigem Zustand über den dritten Vormischzufuhrkanal 12 in die Brennkammer 24 zugeführt, wo das Öl und die Luft unter Anwesenheit des Wassers verbrannt werden. Bei einem weiteren Diffusionsbetrieb wird gleichzeitig mit einer Zuführung von Wasser über den dritten Vormischbrennstoffzufuhrkanal 12 Wasserdampf über den zweiten Vormischbrennstoffzufuhrkanal 8 zugeführt.When the hybrid burner diffuses, air is released via the air supply duct 3 and via the premixed air supply duct 4, oil through the fuel supply channel 1 and water in the liquid state via the third premix feed channel 12 into the combustion chamber 24 fed where the oil and air in the presence of water be burned. Another diffusion operation is simultaneously with a supply of water Water vapor via the third premix fuel feed channel supplied via the second premix fuel supply channel 8.

Der Hybridbrenner 20 ist zusätzlich in einem sogenannten Gasdiffusionsbetrieb betreibbar, wobei gasförmiger Brennstoff ausschließlich über den Brennstoffzufuhrkanal 1 oder den Gasbrennstoffzufuhrkanal 2, Luft über den Luftzufuhrkanal 3 oder den Vormischluftzufuhrkanal 4 und Wasser über den Vormischluftzufuhrkanal 8, 12 und/oder 16 erfolgt.The hybrid burner 20 is also in a so-called gas diffusion mode operable, being gaseous fuel exclusively via the fuel supply channel 1 or the gas fuel supply channel 2, air through the air supply duct 3 or the premix air supply duct 4 and water via the premix air supply duct 8, 12 and / or 16 takes place.

Beim Gasdiffusionsbetrieb erfolgt dabei die Zuführung von Wasserdampf über den zweiten Vormischzufuhrkanal 8 und/oder die Zuführung von Wasser über den dritten Vormischzufuhrkanal 12. In the case of gas diffusion operation, Water vapor via the second premix feed channel 8 and / or the supply of water via the third premix feed channel 12th

All diesen Betriebsverfahren ist gemeinsam, daß eine Verbrennung von Brennstoff und Luft unter Anwesenheit einer großen Menge an Wasser durchgeführt werden kann, ohne daß es zu einer Anfachung von Verbrennungsschwingungen kommt. Somit ist die Menge der bei der Verbrennung gebildeten Stickoxide erheblich verringerbar. Die Betriebsverfahren sind einfach bei bestehenden Hybridbrennern anwendbar.All these operating methods have in common that combustion of fuel and air in the presence of a large Amount of water can be carried out without causing a Combustion of combustion vibrations comes. So is the amount of nitrogen oxides formed during combustion considerably reducible. The operating procedures are simple at existing hybrid burners applicable.

Claims (4)

  1. Operating method for a hybrid burner (20), which has a premix burner (22) and a pilot burner (21), the premix burner (22) having a premix air supply duct (4) and at least one premix fuel supply duct (8, 16, 12) which opens into the premix air supply duct (4), and the pilot burner (21) having an air supply duct (3) and a fuel supply duct (1, 2) for liquid and/or gaseous fuel, air being supplied by means of the air supply duct (3) and by means of the premix air supply duct (4), characterized in that oil is supplied in the liquid state by means of the fuel supply duct (1) and water in the liquid state by means of the premix fuel supply duct (12) designed for supplying oil, the formation of nitrogen oxides being reduced.
  2. Operating method for a hybrid burner (20), which has a premix burner (22) and a pilot burner (21), the premix burner (22) having a premix air supply duct (4) and at least one premix fuel supply duct (8, 16, 12), which opens into the premix air supply duct (4), and the pilot burner (21) having an air supply duct (3) and a fuel supply duct (1, 2) for liquid and/or gaseous fuel, air being supplied by means of the air supply duct (3) and by means of the premix air supply duct (4), characterized in that fuel gas is exclusively supplied by means of the fuel supply duct (1, 2) and water is supplied by means of the premix fuel supply duct (8, 12, 16), the formation of nitrogen oxides being reduced.
  3. Method according to Claim 2, characterized in that a premix fuel supply duct (12) is designed for supplying oil and the water is supplied in the liquid state by means of this duct.
  4. Method according to Claim 1, 2 or 3, characterized in that a premix fuel supply duct (8, 16) is designed for supplying fuel gas and water vapour is supplied by means of this duct.
EP99952350A 1998-08-20 1999-08-10 Operating method for a hybrid burner Expired - Lifetime EP1105678B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19837865 1998-08-20
DE19837865 1998-08-20
PCT/DE1999/002495 WO2000011404A1 (en) 1998-08-20 1999-08-10 Operating method for a hybrid burner

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EP1105678A1 EP1105678A1 (en) 2001-06-13
EP1105678B1 true EP1105678B1 (en) 2004-10-20

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EP99952350A Expired - Lifetime EP1105678B1 (en) 1998-08-20 1999-08-10 Operating method for a hybrid burner

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US (1) US20010018173A1 (en)
EP (1) EP1105678B1 (en)
JP (1) JP2002523717A (en)
DE (1) DE59910909D1 (en)
WO (1) WO2000011404A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20012780A1 (en) * 2001-12-21 2003-06-21 Nuovo Pignone Spa MAIN INJECTION DEVICE FOR LIQUID FUEL FOR SINGLE COMBUSTION CHAMBER EQUIPPED WITH PRE-MIXING CHAMBER OF A TU
EP1645805A1 (en) * 2004-10-11 2006-04-12 Siemens Aktiengesellschaft burner for fluidic fuels and method for operating such a burner
US7546735B2 (en) * 2004-10-14 2009-06-16 General Electric Company Low-cost dual-fuel combustor and related method
EP1659339A1 (en) * 2004-11-18 2006-05-24 Siemens Aktiengesellschaft Method of starting up a burner
EP2312215A1 (en) * 2008-10-01 2011-04-20 Siemens Aktiengesellschaft Burner and Method for Operating a Burner
US20110314831A1 (en) * 2010-06-23 2011-12-29 Abou-Jaoude Khalil F Secondary water injection for diffusion combustion systems
US9200808B2 (en) * 2012-04-27 2015-12-01 General Electric Company System for supplying fuel to a late-lean fuel injector of a combustor
WO2016064391A1 (en) * 2014-10-23 2016-04-28 Siemens Energy, Inc. Flexible fuel combustion system for turbine engines
DE102017116529B4 (en) * 2017-07-21 2022-05-05 Kueppers Solutions Gmbh burner

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Publication number Priority date Publication date Assignee Title
DE4109304A1 (en) * 1991-03-21 1992-09-24 Siemens Ag Gas-turbine-burner operating system - delivers steam and oil into air current via different nozzles
KR100234569B1 (en) * 1991-04-25 1999-12-15 피터 토마스 Burner arrangement especially for gas turbines for the low-pollutant combustion of coal gas and other fuels
DE19520292A1 (en) * 1995-06-02 1996-12-05 Abb Management Ag Method of operating combustion chamber of power generation station gas turbo group contg. compressor unit, generator, at least one combustion chamber and turbine

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DE59910909D1 (en) 2004-11-25
EP1105678A1 (en) 2001-06-13
US20010018173A1 (en) 2001-08-30
JP2002523717A (en) 2002-07-30
WO2000011404A1 (en) 2000-03-02

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