EP0276696A2 - Hybrid burner for premix operation with gas and/or oil, particularly for gas turbine plants - Google Patents

Hybrid burner for premix operation with gas and/or oil, particularly for gas turbine plants Download PDF

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Publication number
EP0276696A2
EP0276696A2 EP88100461A EP88100461A EP0276696A2 EP 0276696 A2 EP0276696 A2 EP 0276696A2 EP 88100461 A EP88100461 A EP 88100461A EP 88100461 A EP88100461 A EP 88100461A EP 0276696 A2 EP0276696 A2 EP 0276696A2
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EP
European Patent Office
Prior art keywords
burner
oil
gas
main
inlet nozzles
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.)
Granted
Application number
EP88100461A
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German (de)
French (fr)
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EP0276696A3 (en
EP0276696B1 (en
Inventor
Helmut Dipl.-Math. Maghon
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Siemens AG
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Siemens AG
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Publication date
Priority to IN24/CAL/88A priority Critical patent/IN168632B/en
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT88100461T priority patent/ATE56522T1/en
Publication of EP0276696A2 publication Critical patent/EP0276696A2/en
Publication of EP0276696A3 publication Critical patent/EP0276696A3/en
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Publication of EP0276696B1 publication Critical patent/EP0276696B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
    • F23C7/004—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes
    • 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
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • 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
    • 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
    • F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
    • F23R3/04—Air inlet arrangements
    • F23R3/10—Air inlet arrangements for primary air
    • F23R3/12—Air inlet arrangements for primary air inducing a vortex
    • F23R3/14—Air inlet arrangements for primary air inducing a vortex by using swirl vanes
    • 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
    • F23R3/36—Supply of different fuels

Definitions

  • the present invention relates to a burner according to the preamble of claim 1.
  • Such burners, their application and installation options are known from EP-A-0193 838.
  • the structure of such a burner arrangement is described in detail, to which reference is expressly made here, so that the description below can be limited to the new details essential to the invention.
  • the burner known from the prior art is also suitable for operation with gas and / or oil, but both alternatives cannot be carried out in the premix mode.
  • the known arrangement works as a diffusion burner, which has disadvantages in terms of pollutant emissions.
  • the known burner arrangement has a plurality of nozzle pipes in the area of the main air flow, through which gas is admixed to the air flow.
  • gas is admixed to the air flow.
  • such an admixing system could also be supplied with oil instead of gas, but because of the completely different volume flows, the nozzles would have to be dimensioned quite differently. Therefore, once installed, the system is only suitable for either premix operation with gas or with oil.
  • the favorable gas feed location before the swirl blading is not particularly suitable for the feed of oil and its fine atomization, since in In this area the air flow velocity is relatively low.
  • the object of the present invention is therefore a development of the known burner arrangement for operation with gas and / or oil without changing the internals. Possibly. the simultaneous use of gas and oil as fuel should also be possible.
  • the goal is in every case the reduction of pollutant emissions, in particular NOx emissions.
  • inlet nozzles for oil should also be present in the main burner system, which allow premixing of the main air flow with oil.
  • Favorable arrangements of the inlet nozzles and design options of the associated oil supply system are contained in claims 2 to 9 and are explained in more detail with reference to the drawing.
  • the feed of inert substances for example steam, water or nitrogen
  • These measures can also be used and are suitable for the arrangement according to the invention.
  • the burner according to the invention which can optionally be used in conjunction with several similar burners, for example in the combustion chamber of a gas turbine system, consists of an inner part, the pilot burner system, and an outer part, the main burner system, which is concentric with it. Both systems are suitable for operation with gas and / or oil in any combination. Natural gas and heating oil are generally used as fuels.
  • the pilot burner system consists of an inner oil feed channel 1 and an inner gas feed channel 2 arranged concentrically around it. This in turn is surrounded by a concentrically arranged inner air (or inert) feed channel 3.
  • a or in this channel can suitable ignition system can be arranged, for which many possible designs are known and the illustration of which has been omitted here.
  • the inner oil supply duct 1 has an oil nozzle 5 at its end, the inner air supply duct 3 has a swirl blading 6 in its end region.
  • the pilot burner system 1, 2, 3, 5, 6 can be operated with oil or gas in a manner known per se.
  • the design of the pilot burner system as a separate premix burner known from EP-A-0193 838 is also suitable for the proposed arrangement and does not impair it.
  • the main burner system consists of an outer air supply ring duct system 4, which is arranged concentrically to the pilot burner system and slants towards it.
  • This air supply ring duct system 4 is also provided with a swirl blading 7. Upstream of the swirl blading there are gas nozzle tubes 10 with a plurality of gas nozzles 11 in the flow cross section of the main air flow L H. These are fed from a gas ring channel 9, which has a main gas supply line 8.
  • the burner additionally has a further oil ring channel 13, which is fed from a main oil supply line 12.
  • This oil ring channel 13 is concentric with the pilot burner system 1, 2, 3, 5, 6, in the area in which it collides with the main burner system 4, 7.
  • a free space which is present there in previous designs can accommodate the oil ring channel 13. It can be formed by a single additional partition.
  • the oil ring channel 13 has holes through the wall to the outer air supply ring channel system 4, which end in the area of the swirl blades 7. These holes are provided with nozzles which generate an oil spray 15 which is directed approximately perpendicular to the main air flow L H.
  • the main air flow L H causes a fine atomization of the injected oil.
  • At least one inlet nozzle 14 is preferably arranged in each space between the blades of the swirl blades 7.
  • the oil supply can be regulated via the oil pressure in the oil ring channel 13.
  • the burner according to the invention enables flexible adaptation to the type of fuel available in each case while minimizing the NO x emission.
  • the burner can work as a premix burner both when operating with gas and when operating with oil and, if necessary, in combinations of both modes of operation, the stability of the flame being ensured by a pilot burner system.

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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)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Abstract

Die vorliegende Erfindung betrifft einen Brenner für Betrieb mit Gas (G) und/oder Öl (O), bestehend aus einem zentralen Pilotbrennersystem (1, 2, 3, 5, 6) und einem dieses System umgebenden ringförmigen Hauptbrennersystem (4, 7) für Vormischbetrieb mit Gas (GH), welches aus einer Vielzahl von Düsen (11) dem Hauptluftstrom (LH) beimischbar ist. Der erfindungsgemäße Brenner weist zusätzlich im Hauptbrennersystem (4, 7) Einlaßdüsen (14) für Öl (OH) auf, die eine Vormischung des Hauptluftstromes (LH) mit Öl (OH) ermöglichen. Die Einlaßdüsen (14) liegen vorzugsweise im Bereich der Drallbeschaufelung (7), wo die höchste Strömungsgeschwindigkeit herrscht. Gespeist werden die Einlaßdüsen (14) aus einem Öl-Ringkanal (13), welcher mit einer Haupt-Ölzuleitung (12) in Verbindung steht. Die vorliegende Erfindung ermöglicht einen Vormischbetrieb bei der Versorgung sowohl mit Gas als auch mit Öl, wodurch die NOx- Emission minimiert werden kann.The invention relates to a burner for operation with gas (G) and / or oil (O), comprising a central pilot burner system (1, 2, 3, 5, 6) and an annular main burner system (4, 7) surrounding this system Premix operation with gas (GH), which can be mixed with the main air flow (LH) from a plurality of nozzles (11). The burner according to the invention additionally has inlet nozzles (14) for oil (OH) in the main burner system (4, 7), which make it possible to premix the main air stream (LH) with oil (OH). The inlet nozzles (14) are preferably in the region of the swirl blading (7), where the highest flow speed prevails. The inlet nozzles (14) are fed from an oil ring channel (13) which is connected to a main oil feed line (12). The present invention enables premix operation in both gas and oil supply, thereby minimizing NOx emissions.

Description

Die vorliegende Erfindung betrifft einen Brenner gemäß dem Oberbegriff des Anspruchs 1. Solche Brenner, ihre Anwendungs- und Einbaumöglichkeiten sind aus der EP-A-­0193 838 bekannt. In dieser Schrift ist auch der Aufbau einer solchen Brenneranordnung im einzelnen beschrieben, worauf hier ausdrücklich Bezug genommen wird, so daß die Beschreibung im folgenden auf die neuen, erfindungs­wesentlichen Einzelheiten beschränkt werden kann.The present invention relates to a burner according to the preamble of claim 1. Such burners, their application and installation options are known from EP-A-0193 838. In this document, the structure of such a burner arrangement is described in detail, to which reference is expressly made here, so that the description below can be limited to the new details essential to the invention.

Der nach dem Stand der Technik bekannte Brenner eignet sich ebenfalls für einen Betrieb mit Gas und/oder Öl, jedoch können nicht beide Alternativen im Vormischbetrieb durchgeführt werden. Für den Fall, daß ein Brenner nach dem Stand der Technik mit Öl betrieben werden soll, ar­beitet die bekannte Anordnung als Diffusionsbrenner, was Nachteile beim Schadstoffausstoß mit sich bringt. Die bekannte Brenneranordnung weist im Bereich des Hauptluftstromes eine Mehrzahl von Düsenrohren auf, durch welche Gas dem Luftstrom beigemischt wird. Grund­sätzlich könnte ein solches Zumischsystem statt mit Gas auch mit Öl gespeist werden, jedoch müßte wegen der völlig unterschiedlichen Volumenströme eine ganz andere Dimensionierung der Düsen vorgenommen werden. Daher eig­net sich ein einmal installiertes System nur entweder für einen Vormischbetrieb mit Gas oder mit Öl. Hinzu kommt, daß der für Gas günstige Einspeisungsort vor der Drallbeschaufelung für die Einspeisung von Öl und dessen feine Zerstäubung nicht besonders geeignet ist, da in diesem Bereich die Strömungsgeschwindigkeit der Luft relativ gering ist.The burner known from the prior art is also suitable for operation with gas and / or oil, but both alternatives cannot be carried out in the premix mode. In the event that a burner according to the prior art is to be operated with oil, the known arrangement works as a diffusion burner, which has disadvantages in terms of pollutant emissions. The known burner arrangement has a plurality of nozzle pipes in the area of the main air flow, through which gas is admixed to the air flow. In principle, such an admixing system could also be supplied with oil instead of gas, but because of the completely different volume flows, the nozzles would have to be dimensioned quite differently. Therefore, once installed, the system is only suitable for either premix operation with gas or with oil. In addition, the favorable gas feed location before the swirl blading is not particularly suitable for the feed of oil and its fine atomization, since in In this area the air flow velocity is relatively low.

Aufgabe der vorliegenden Erfindung ist daher eine Wei­terbildung der bekannten Brenneranordnung für einen Be­trieb mit Gas und/oder Öl ohne Änderung der Einbauten. Ggf. soll auch die gleichzeitige Verwendung von Gas und Öl als Brennstoff möglich sein. Ziel ist in jedem Falle die Verringerung des Schadstoffausstoßes, insbesondere der NOx-Emission.The object of the present invention is therefore a development of the known burner arrangement for operation with gas and / or oil without changing the internals. Possibly. the simultaneous use of gas and oil as fuel should also be possible. The goal is in every case the reduction of pollutant emissions, in particular NOx emissions.

Zur Lösung dieser Aufgabe wird gemäß dem Hauptanspruch vorgeschlagen, daß zusätzlich im Hauptbrennersystem Einlaßdüsen für Öl vorhanden sein sollen, die eine Vor­mischung des Hauptluftstromes mit Öl ermöglichen. Günstige Anordnungen der Einlaßdüsen und Ausführungs­möglichkeiten des zugehörigen Ölversorgungssystems sind in den Ansprüchen 2 bis 9 enthalten und werden anhand der Zeichnung näher erläutert.To solve this problem it is proposed according to the main claim that inlet nozzles for oil should also be present in the main burner system, which allow premixing of the main air flow with oil. Favorable arrangements of the inlet nozzles and design options of the associated oil supply system are contained in claims 2 to 9 and are explained in more detail with reference to the drawing.

Es sei darauf hingewiesen, daß sämtliche nach dem Stand der Technik bekannten Betriebsverfahren einer solchen Brenneranordnung auch für die erfindungsgemäße Ausfüh­rung geeignet sind, wobei zusätzlich durch die Erfin­duch auch noch ein Vormischbetrieb mit Öl möglich wird. Da auch beim Vormischbetrieb mit Öl zur Stabilisierung der Flamme im allgemeinen die Unterstützung eines Pilot­brennersystems nötig ist, kommen auch für dieses System wiederum alle bekannten Ausführungsformen und Betriebs­varianten in Frage. Besonders vorteilhaft wird es im allgemeinen sein, sowohl Hauptbrenner wie Pilotbrenner mit dem gleich Brennstoff, nämlich Gas oder Öl, zu be­treiben, zwingend notwendig ist dies jedoch keineswegs.It should be pointed out that all of the operating methods known in the prior art for such a burner arrangement are also suitable for the embodiment according to the invention, with the invention also allowing premixing with oil. Since the support of a pilot burner system is also generally required to stabilize the flame during premixing operation with oil, all known embodiments and operating variants are again possible for this system. In general, it will be particularly advantageous to operate both the main burner and the pilot burner with the same fuel, namely gas or oil, but this is by no means absolutely necessary.

In unterschiedlichen Lastbereichen kann zusätzlich die Einspeisung von Inertstoffen, beispielsweise Dampf, Wasser oder Stickstoff, die NOx-Emission in bekannter Weise sen­ken. Auch diese Maßnahmen sind für die erfindungsgemäße Anordnung anwendbar und geeignet.In different load ranges, the feed of inert substances, for example steam, water or nitrogen, can additionally reduce the NO x emission in a known manner. These measures can also be used and are suitable for the arrangement according to the invention.

Im folgenden wird anhand der Zeichnung, einem stark schematisierten Längsschnitt durch einen erfindungs­gemäßen Brenner, das Wesen der Erfindung näher erläutert. Zum Verständnis sind unwesentliche Einzelheiten, die im Stand der Technik bereits ausführlich erläutert wurden, weggelassen bzw. vereinfacht.The essence of the invention is explained in more detail below with reference to the drawing, a highly schematic longitudinal section through a burner according to the invention. For the sake of understanding, insignificant details that have already been explained in detail in the prior art are omitted or simplified.

Der erfindungsgemäße Brenner, der ggf. in Verbindung mit mehreren gleichartigen Brennern beispielsweise in der Brennkammer einer Gasturbinenanlage eingesetzt werden kann, besteht aus einem inneren Teil, dem Pilotbrenner­system und einem konzentrisch dazu liegenden äußeren Teil, dem Hauptbrennersystem. Beide Systeme sind für einen Be­trieb mit Gas und/oder Öl in beliebiger Kombination ge­eignet. Als Brennstoffe finden im allgemeinen Erdgas und Heizöl Verwendung. Das Pilotbrennersystem besteht aus einem inneren Öl-Zufuhrkanal 1 und einem konzentrisch um diesen herum angeordneten inneren Gas-Zufuhrkanal 2. Dieser wiederum ist umgeben von einem konzentrisch ange­ordneten inneren Luft- (bzw. Inertstoff-) Zufuhrkanal 3. In oder an diesem Kanal kann ein geeignetes Zündsystem angeordnet sein, für welches viele Ausführungsmöglich­keiten bekannt sind und auf dessen Darstellung hier verzichtet wurde. Der innere Öl-Zufuhrkanal 1 weist an seinem Ende eine Öldüse 5 auf, der innere Luft-Zufuhrkanal 3 weist in seinem Endbereich eine Drallbeschaufelung 6 auf.The burner according to the invention, which can optionally be used in conjunction with several similar burners, for example in the combustion chamber of a gas turbine system, consists of an inner part, the pilot burner system, and an outer part, the main burner system, which is concentric with it. Both systems are suitable for operation with gas and / or oil in any combination. Natural gas and heating oil are generally used as fuels. The pilot burner system consists of an inner oil feed channel 1 and an inner gas feed channel 2 arranged concentrically around it. This in turn is surrounded by a concentrically arranged inner air (or inert) feed channel 3. A or in this channel can suitable ignition system can be arranged, for which many possible designs are known and the illustration of which has been omitted here. The inner oil supply duct 1 has an oil nozzle 5 at its end, the inner air supply duct 3 has a swirl blading 6 in its end region.

Das Pilotbrennersystem 1, 2, 3, 5, 6 kann in an sich be­kannter Weise mit Öl oder Gas betrieben werden. Auch die aus der EP-A-0193 838 bekannte Ausführung des Pilotbren­nersystems als separater Vormischbrenner eignet sich für die vorgeschlagene Anordnung und beeinträchtigt diese nicht.The pilot burner system 1, 2, 3, 5, 6 can be operated with oil or gas in a manner known per se. The design of the pilot burner system as a separate premix burner known from EP-A-0193 838 is also suitable for the proposed arrangement and does not impair it.

Das Hauptbrennersystem besteht aus einem konzentrisch zum Pilotbrennersystem angeordneten und schräg auf dieses zulaufenden äußeren Luft-Zufuhr-Ringkanalsystem 4. Auch dieses Luft-Zufuhr-Ringkanalsystem 4 ist mit einer Drallbeschaufelung 7 versehen. Stromaufwärts der Drall­beschaufelung befinden sich Gasdüsenrohre 10 mit einer Mehrzahl von Gasdüsen 11 im Strömungsquerschnitt des Hauptluftstromes LH. Diese werden aus einem Gasringkanal 9 gespeist, welcher eine Haupt-Gas-Zuführungsleitung 8 aufweist.The main burner system consists of an outer air supply ring duct system 4, which is arranged concentrically to the pilot burner system and slants towards it. This air supply ring duct system 4 is also provided with a swirl blading 7. Upstream of the swirl blading there are gas nozzle tubes 10 with a plurality of gas nozzles 11 in the flow cross section of the main air flow L H. These are fed from a gas ring channel 9, which has a main gas supply line 8.

Erfindungsgemäß weist der Brenner zusätzlich einen wei­teren Öl-Ringkanal 13 auf, welcher aus einer Haupt-Öl-­Zuleitung 12 gespeist wird. Dieser Öl-Ringkanal 13 liegt konzentrisch zum Pilotbrennersystem 1, 2, 3, 5, 6, und zwar in dem Bereich, in dem dieses mit dem Hauptbrenner­system 4, 7 zusammenstößt. Ein dort bei bisherigen Kon­struktionen ohnehin vorhandener Freiraum kann den Öl-­Ringkanal 13 aufnehmen. Er kann durch eine einzige zu­sätzliche Trennwand gebildet werden. Der Öl-Ringkanal 13 weist Bohrungen durch die Wand zum äußeren Luft-Zufuhr-Ring­kanalsystem 4 auf, welche im Bereich der Drallbeschaufelung 7 enden. Diese Bohrungen sind mit Düsen versehen, welche einen Öl-Sprühstrahl 15 erzeugen, der ungefähr senkrecht zum Hauptluftstrom LH gerichtet ist. Bei Anordnung der Düsen im Bereich der höchsten Strömungsgeschwindigkeit, d. h. im Bereich des geringstens Querschnittes der Drall­beschaufelung, bewirkt der Hauptluftstrom LH eine feine Zerstäubung des eingespritzten Öls. Vorzugsweise ist in jedem Zwischenraum zwischen den Schaufeln der Drallbe­schaufelung 7 mindestens eine Einlaßdüse 14 angeordnet. Über den Öldruck im Öl-Ringkanal 13 kann die Ölzufuhr geregelt werden.According to the invention, the burner additionally has a further oil ring channel 13, which is fed from a main oil supply line 12. This oil ring channel 13 is concentric with the pilot burner system 1, 2, 3, 5, 6, in the area in which it collides with the main burner system 4, 7. A free space which is present there in previous designs can accommodate the oil ring channel 13. It can be formed by a single additional partition. The oil ring channel 13 has holes through the wall to the outer air supply ring channel system 4, which end in the area of the swirl blades 7. These holes are provided with nozzles which generate an oil spray 15 which is directed approximately perpendicular to the main air flow L H. If the nozzles are arranged in the area of the highest flow velocity, ie in the area of the smallest cross section of the swirl blading, the main air flow L H causes a fine atomization of the injected oil. At least one inlet nozzle 14 is preferably arranged in each space between the blades of the swirl blades 7. The oil supply can be regulated via the oil pressure in the oil ring channel 13.

Der erfindungsgemäße Brenner ermöglicht eine flexible Anpassung an die jeweils zur Verfügung stehende Brenn­stoffart bei gleichzeitiger Minimierung der NOx-Emission. Sowohl bei Betrieb mit Gas, wie auch bei Betrieb mit Öl und ggf. bei Kombinationen beider Betriebsweisen kann der Brenner als Vormischbrenner arbeiten, wobei die Stabilität der Flamme durch ein Pilotbrennersystem gewährleistet wird.The burner according to the invention enables flexible adaptation to the type of fuel available in each case while minimizing the NO x emission. The burner can work as a premix burner both when operating with gas and when operating with oil and, if necessary, in combinations of both modes of operation, the stability of the flame being ensured by a pilot burner system.

Claims (9)

1. Brenner für Betrieb mit Gas (G) und/oder Öl (O), bestehend aus einem zentralen Pilotbrennersystem (1, 2, 3, 5, 6), welches mit Gas und/oder Öl als Diffusionsbrenner oder gesonderter Vormischbrenner betrieben werden kann, wobei zusätzlich die Möglichkeit einer Einspeisung von Inertstoffen (I) vorhanden sein kann; ferner bestehend aus einem das Pilotbrennersystem (1, 2, 3, 5, 6) umge­benden ringförmigen Hauptbrennersystem (4, 7) für Vormisch­betrieb mit Gas (GH), welches aus einer Vielzahl von Düsen (11) dem Hauptluftstrom (LH)beimischbar ist, dadurch gekennzeichnet, daß zusätz­lich im Hauptbrennersystem (4, 7) Einlaßdüsen (14) für Öl (OH) vorhanden sind, die eine Vormischung des Hauptluftstromes (LH) mit Öl (OH) ermöglichen.1. Burner for operation with gas (G) and / or oil (O), consisting of a central pilot burner system (1, 2, 3, 5, 6), which can be operated with gas and / or oil as a diffusion burner or separate premix burner , with the additional possibility of feeding inert substances (I); further comprising an annular main burner system (4, 7) surrounding the pilot burner system (1, 2, 3, 5, 6) for premixing operation with gas (G H ), which can be admixed to the main air flow (L H ) from a plurality of nozzles (11) , characterized in that there are additionally inlet nozzles (14) for oil (O H ) in the main burner system (4, 7), which enable premixing of the main air flow (L H ) with oil (O H ). 2. Brenner nach Anspruch 1, dadurch gekenn­zeichnet, daß die Einlaßdüsen (14) für Öl (OH) im Bereich der Drallbeschaufelung (7) des Hauptbrennersystems (4) angeordnet sind.2. Burner according to claim 1, characterized in that the inlet nozzles (14) for oil (O H ) in the region of the swirl blading (7) of the main burner system (4) are arranged. 3. Brenner nach Anspruch 2, dadurch gekenn­zeichnet, daß die Einlaßdüsen (14) im Bereich der höchsten Strömungsgeschwindigkeit zwischen der Drallbe­schaufelung (7) angeordnet sind.3. Burner according to claim 2, characterized in that the inlet nozzles (14) are arranged in the region of the highest flow speed between the swirl blades (7). 4. Brenner nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die Einlaßdüsen (14) für Öl (OH) so gerichtet und dimensioniert sind, daß im Normallastbereich des Brenners eine möglichst feine Zer­stäubung und gleichmäßige Verteilung im Hauptluftstrom (LH) erfolgt.4. Burner according to claim 1, 2 or 3, characterized in that the inlet nozzles (14) for oil (O H ) are so directed and dimensioned that in the normal load range of the burner as fine an atomization and uniform distribution in the main air stream (L H ) he follows. 5. Brenner nach Anspruch 4, dadurch gekenn­zeichnet, daß die Einlaßdüsen (14) etwa senkrecht zur Richtung des Hauptluftstromes (LH) gerichtet sind.5. Burner according to claim 4, characterized in that the inlet nozzles (14) are directed approximately perpendicular to the direction of the main air flow (L H ). 6. Brenner nach einem der vorherigen Ansprüche, da­durch gekennzeichnet, daß in jedem Zwischenraum zwischen den Schaufeln der Drallbeschaufelung (7) mindestens eine Einlaßdüse (14) angeordnet ist.6. Burner according to one of the preceding claims, characterized in that at least one inlet nozzle (14) is arranged in each space between the blades of the swirl blades (7). 7. Brenner anch einem der vorherigen Ansprüche, da­durch gekennzeichnet, daß die Ein­laßdüsen (14) mit einem Ringkanal (13) in Verbindung stehen, der das Pilotbrennersystem (1, 2, 3, 5, 6) etwa konzentrisch umgibt und durch eine Haupt-Ölzuleitung (12) mit Öl (OH) beaufschlagbar ist.7. Burner according to one of the preceding claims, characterized in that the inlet nozzles (14) are connected to an annular channel (13) which surrounds the pilot burner system (1, 2, 3, 5, 6) approximately concentrically and by a main Oil supply line (12) can be loaded with oil (O H ). 8. Brenner nach Anspruch 7, dadurch ge­kennzeichnet, daß der Ringkanal (13) zwischen dem Pilotbrennersystem (1, 2, 3, 5, 6) und dem Hauptbrenner­system (4, 7) angeordnet ist, vorzugsweise im Bereich des Zusammenstoßens dieser System.8. Burner according to claim 7, characterized in that the annular channel (13) between the pilot burner system (1, 2, 3, 5, 6) and the main burner system (4, 7) is arranged, preferably in the region of the collision of this system. 9. Brenner nach Anspruch 7 oder 8, dadurch ge­kennzeichnet, daß der Ringkanal (13) mit dem Wandbereich der Drallbeschaufelung überlappt, wobei die Einlaßdüsen (14) als Bohrungen, ggf. mit düsenförmi­gen Schraubeinsätzen, ausgelegt sind.9. Burner according to claim 7 or 8, characterized in that the annular channel (13) overlaps with the wall region of the swirl blading, the inlet nozzles (14) being designed as bores, possibly with nozzle-shaped screw inserts.
EP88100461A 1987-01-26 1988-01-14 Hybrid burner for premix operation with gas and/or oil, particularly for gas turbine plants Expired - Lifetime EP0276696B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IN24/CAL/88A IN168632B (en) 1987-01-26 1988-01-12
AT88100461T ATE56522T1 (en) 1987-01-26 1988-01-14 HYBRID BURNER FOR PREMIXING OPERATION WITH GAS AND/OR OIL, ESPECIALLY FOR GAS TURBINE PLANTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3702181 1987-01-26
DE3702181 1987-01-26

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EP0276696A2 true EP0276696A2 (en) 1988-08-03
EP0276696A3 EP0276696A3 (en) 1989-04-05
EP0276696B1 EP0276696B1 (en) 1990-09-12

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EP88100461A Expired - Lifetime EP0276696B1 (en) 1987-01-26 1988-01-14 Hybrid burner for premix operation with gas and/or oil, particularly for gas turbine plants

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US (1) US5062792A (en)
EP (1) EP0276696B1 (en)
JP (1) JPH0735886B2 (en)
DE (1) DE3860569D1 (en)
NO (1) NO164501C (en)

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Also Published As

Publication number Publication date
NO164501C (en) 1990-10-10
US5062792A (en) 1991-11-05
JPS63194114A (en) 1988-08-11
NO880328L (en) 1988-07-27
NO880328D0 (en) 1988-01-26
DE3860569D1 (en) 1990-10-18
EP0276696A3 (en) 1989-04-05
JPH0735886B2 (en) 1995-04-19
NO164501B (en) 1990-07-02
EP0276696B1 (en) 1990-09-12

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