EP0981016A1 - Burner and method for operating an internal combustion engine - Google Patents

Burner and method for operating an internal combustion engine Download PDF

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Publication number
EP0981016A1
EP0981016A1 EP98810805A EP98810805A EP0981016A1 EP 0981016 A1 EP0981016 A1 EP 0981016A1 EP 98810805 A EP98810805 A EP 98810805A EP 98810805 A EP98810805 A EP 98810805A EP 0981016 A1 EP0981016 A1 EP 0981016A1
Authority
EP
European Patent Office
Prior art keywords
fuel
air inlet
combustion
burner
air flow
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
EP98810805A
Other languages
German (de)
French (fr)
Other versions
EP0981016B1 (en
Inventor
Jakob Prof. Dr. Keller
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 Switzerland GmbH
Original Assignee
ABB Alstom Power Switzerland Ltd
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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
Application filed by ABB Alstom Power Switzerland Ltd, ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Alstom Power Switzerland Ltd
Priority to EP98810805A priority Critical patent/EP0981016B1/en
Priority to DE59810551T priority patent/DE59810551D1/en
Priority to US09/369,838 priority patent/US6263676B1/en
Priority to CN99111501.5A priority patent/CN1113187C/en
Publication of EP0981016A1 publication Critical patent/EP0981016A1/en
Application granted granted Critical
Publication of EP0981016B1 publication Critical patent/EP0981016B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • 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
    • 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

Definitions

  • the invention relates to a burner for operating an internal combustion engine, a combustion chamber of a gas turbine group or furnace, with at least two half, hollow partial cone bodies, which are joined together in such a way that whose axes of longitudinal symmetry are radially offset from one another and the at least two tangential air inlet slots for a combustion air flow and include a cone cavity and a nozzle assembly for injection liquid, highly reactive fuel in the cone cavity, which in the area of narrowest inside diameter of the cone cavity is arranged. Further relates the invention relates to a method for operating an internal combustion engine, a Combustion chamber of a gas turbine group or furnace.
  • a burner of the type mentioned above goes for example from the EP 0321 809 B1 and is used with great success for firing gas turbine systems used.
  • This type of burner is considered a successful type of burner output, those for firing with highly reactive, gaseous and liquid fuels designed with a high calorific value of around 35 to 50 MJ / kg are.
  • Hirbei is using the liquid fuel inside the combustion chamber a nozzle arrangement in the center of the cone cavity in the form of a introduced conical fuel sprays.
  • the conical Fuel spray is from a tangent flowing into the cone cavity rotating combustion air flow enclosed and thereby stabilized. Only in Area of the vortex runout, i.e.
  • Gaseous fuel is made up of two pipes that close the air inlet slots of the Are arranged along the burner, through rows of holes transverse to the entering Air flow injected.
  • the inner and outer shape of the Brenners can be seen as the end product of an extensive optimization process in which the burner from the point of view of combustion liquid fuel with a high calorific value has been optimized.
  • the invention is based on the object of a generic burner the preamble of claim 1, the spatial configuration of the targeted combustion of gaseous and liquid fuel with a high calorific value is optimized to develop in such a way that the combustion of medium and / or low calorific fuels without affecting shape and Design of the burner and without deterioration of the emission values is possible.
  • the measures to be taken for this should, if possible, be used for existing ones Burner can be retrofitted and have a simple design. Necessary modifications to the burner itself should be as small as possible be kept low, medium and low with the help of a single type of burner high calorific fuels can be burned.
  • an injection device is in each case in the flow direction arranged in front of the air inlet slots that in the combustion air supply fuel to be introduced parallel to the flow direction of the combustion air supply is injected into the air inlet slots. Due to the parallel fuel feed any turbulence within the combustion supply air flow avoided, which does not lead to irritating eddy formation local fuel accumulations and cause uncontrolled ignition events are.
  • the nozzle arrangement is particularly designed such that the exit speed the fuel from the nozzle arrangement approximately the same flow rate with which the combustion supply air flow into the Air inlet slots is introduced. Due to the isokinetic entry behavior Mass flows are also avoided any dynamic pressure differences, whereby equally disturbing eddy formation can be excluded.
  • the nozzle arrangement according to the invention has that has two air inlet slots has two injection devices on, each positioned in the direction of flow in front of the air inlet slots are. Both injection devices are connected to one another via a frame firmly connected and can be attached to the corresponding connecting elements Burner can be attached detachably.
  • Each of the respective injection devices provided extend longitudinally over the entire length of the air inlet slot and each have a preferably rectilinear interior Fuel supply line, which via a narrowed supply duct with the Nozzle outlet area is connected.
  • the narrowed supply channel can consist of a large number of individual bores, which are distributed along the fuel supply channel, as well as a continuous feed slot that extends over the entire length of the injection device extends, be formed.
  • the nozzle outlet area is preferred as a continuous slot channel that extends over the entire length of the Injection device extends and has a channel-length-width ratio on that to a directed, almost parallel fuel jet leads, which, as already mentioned above, to the flow velocity flow velocity adapted to the combustion air having.
  • Figure 1 shows a schematic cross-sectional view through the air inlet slot 1 of a burner, not shown in further detail.
  • the air inlet slot 1 is limited on the one hand by the outer wall of a first partial cone body 2 and through the inner wall of a second partial cone body 3.
  • an injection device 7 is provided, which is parallel to its longitudinal axis
  • fuel feed line 8 with a narrowed feed channel 9 the nozzle outlet area 10 of the injection device 7 is connected.
  • the narrowed Supply channel 9 can be used as a multitude of side by side Single bores can be designed as well as a continuous slot opening be, which extends over the entire length of the injection device 7.
  • the narrowed supply duct 9 has the task, on the one hand, of possible occurrences acoustic vibrations within the fuel feed line 8 from the nozzle outlet area 10 decouple. Secondly, the narrowed supply channel 9 a throttling of the prevailing inside the fuel feed line 8 Working pressure in the direction of the nozzle outlet area.
  • the nozzle outlet area indicates one of the pressure and flow conditions of the fuel adjusted length as well as width, creating a targeted fuel flow field 13 is generated, largely as a two-dimensional flow field at the same speed to the fuel supply air flow 6 in the air inlet slot 1 can be introduced.
  • FIG 2 is a side view of the burner expanded according to the invention shown, which consists of the first partial cone body 2 and the second partial cone body 3 is composed. Both partial cone bodies close two air inlet slots one, of which the air inlet slot 1 is shown in FIG. In the direction of flow An injection device 7 is provided in front of the air inlet slot 1, which can be fixed at least on one side with a base plate 10 of the burner connected is. Via a preferably ring-shaped frame 12 is the injection device 7 with its opposite on the burner (in of the rear 2) injection device connected.
  • the injection device according to the invention can be installed over existing ones Burner systems are guided and suitably firmly connected to the burner become. In this way, the injection device is an additional module view that can be retrofitted as desired.

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

Abstract

A fuel injection device (7) is provided in the direction of the air inlet current (6) in front of the tangential air inlet slits (1) to inject the fuel in a parallel flow direction to the air inlet current into the air inlet slit. The injection device injects the fuel isokinetically relative to the combustion inlet air. The individual injection devices for each air inlet slit are connected together through a cohesive frame formed as a module fixable on the burner.

Description

Technisches GebietTechnical field

Die Erfindung bezieht sich auf einen Brenner zum Betrieb einer Brennkraftmaschine, einer Brennkammer einer Gasturbogruppe oder Feuerungsanlage, mit wenigstens zwei halben, hohlen Teilkegelkörpern, die derart ineinander gefügt sind, daß deren Längssymmetrieachsen zueinander radial versetzt verlaufen und die mindestens zwei tangentiale Lufteintrittsschlitze für einen Verbrennungszuluftstrom sowie einen Kegelhohlraum einschließen, und einer Düsenanordnung zum Eindüsen flüssigen, hochreaktiven Brennstoffes in den Kegelhohlraum, die im Bereich des engsten Innendurchmessers des Kegelhohlraumes angeordnet ist. Ferner bezieht sich die Erfindung auf ein Verfahren zum Betrieb einer Brennkraftmaschine, einer Brennkammer einer Gasturbogruppe oder Feuerungsanlage.The invention relates to a burner for operating an internal combustion engine, a combustion chamber of a gas turbine group or furnace, with at least two half, hollow partial cone bodies, which are joined together in such a way that whose axes of longitudinal symmetry are radially offset from one another and the at least two tangential air inlet slots for a combustion air flow and include a cone cavity and a nozzle assembly for injection liquid, highly reactive fuel in the cone cavity, which in the area of narrowest inside diameter of the cone cavity is arranged. Further relates the invention relates to a method for operating an internal combustion engine, a Combustion chamber of a gas turbine group or furnace.

Stand der TechnikState of the art

Ein Brenner der vorstehend genannten Gattung geht beispielsweise aus der EP 0321 809 B1 hervor und wird mit großem Erfolg zur Befeuerung von Gasturbinenanlagen eingesetzt. Diese Brennerart gilt als erfolgreicher Ausgangstyp von Brennern, die zur Befeuerung mit hochreaktiven, gasförmigen und flüssigen Brennstoffen mit einem hohen Heizwert von etwa 35 bis 50 MJ/kg ausgelegt worden sind. Hirbei wird der flüssige Brennstoff in das Innere der Brennkammer mittels einer mittig zum Kegelhohlraum angebrachten Düsenanordnung in Form eines sich kegelförmig ausbildenden Brennstoffsprays eingebracht. Das kegelförmige Brennstoffspray wird von einem tangential in den Kegelhohlraum einströmenden rotierenden Verbrennungsluftstrom umschlossen und dadurch stabilisiert. Erst im Bereich des Wirbelaufplatzens, also im Bereich der sogenannten Rückströmzone, wird die optimale, homogene Brennstoffkonzentration über den Querschnitt erreicht, so daß in diesem Bereich die Zündung des Brennstoffgemisches erfolgt. Gasförmiger Brennstoff wird aus zwei Rohren, die den Lufteintrittsschlitzen des Brenners entlang angeordnet sind, durch Bohrungsreihen quer zur eintretenden Luftströmung eingedüst.A burner of the type mentioned above goes for example from the EP 0321 809 B1 and is used with great success for firing gas turbine systems used. This type of burner is considered a successful type of burner output, those for firing with highly reactive, gaseous and liquid fuels designed with a high calorific value of around 35 to 50 MJ / kg are. Hirbei is using the liquid fuel inside the combustion chamber a nozzle arrangement in the center of the cone cavity in the form of a introduced conical fuel sprays. The conical Fuel spray is from a tangent flowing into the cone cavity rotating combustion air flow enclosed and thereby stabilized. Only in Area of the vortex runout, i.e. in the area of the so-called backflow zone the optimal, homogeneous fuel concentration is achieved across the cross-section, so that the ignition of the fuel mixture takes place in this area. Gaseous fuel is made up of two pipes that close the air inlet slots of the Are arranged along the burner, through rows of holes transverse to the entering Air flow injected.

Die durch die Doppelkegelstruktur vorgegebene innere und äußere Form des Brenners kann als Endprodukt eines umfangreichen Optimierungsprozesses angesehen werden, bei dem der Brenner unter dem Gesichtspunkt der Verbrennung flüssiger Brennstoffes mit hohem Heizwert optimiert worden ist.The inner and outer shape of the Brenners can be seen as the end product of an extensive optimization process in which the burner from the point of view of combustion liquid fuel with a high calorific value has been optimized.

Basierend auf dem erfolgreichen Konzept der Brennerform aufbauend, die in der EP 0 321 809 B1 beschrieben ist, gilt es nach erfolgversprechenden Lösungen zu suchen, die die zusätzliche Verbrennung von nieder- und mittelkalorischen Brennstoffen ermöglichen.Based on the successful concept of the burner shape, which in the EP 0 321 809 B1 is described, it applies to promising solutions looking for the additional combustion of low and medium calorific fuels enable.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zugrunde, einen gattungsgemäßen Brenner gemäß dem Oberbegriff des Anspruchs 1, dessen räumliche Ausgestaltung an die gezielte Verbrennung gasförmigen und flüssigen Brennstoffes eines hohen Heizwertes optimiert ist, derart weiterzubilden, daß die Verbrennung von mittel-und/oder niederkalorischen Brennstoffen ohne Beeinträchtigung von Form und Ausgestaltung des Brenners und ohne Verschlechterung der Emissionswerte möglich ist. Die hierfür zu treffenden Maßnahmen sollen nach Möglichkeit für bestehende Brenner nachrüstbar sein und eine einfache Ausgestaltung aufweisen. Notwendige Modifikationen am Brenner selbst sollen so gering wie nur möglich gehalten werden, damit mit Hilfe eines einzigen Brennertyps niedrig-, mittel- sowie hochkalorische Brennstoffe verbrannt werden können. Schließlich soll ein Verfahren zum Betrieb eines Brenners angegeben werden, das die Verbrennung von nieder-, mittel- sowie hochkalorischer Brennstoffe bei gleichbleibenden bzw. reduzierten Emissionswerten möglich ist. Ausserdem soll es möglich sein, Brennstoffe mit hohem Wasserstoffgehalt problemlos verbrennen zu können.The invention is based on the object of a generic burner the preamble of claim 1, the spatial configuration of the targeted combustion of gaseous and liquid fuel with a high calorific value is optimized to develop in such a way that the combustion of medium and / or low calorific fuels without affecting shape and Design of the burner and without deterioration of the emission values is possible. The measures to be taken for this should, if possible, be used for existing ones Burner can be retrofitted and have a simple design. Necessary modifications to the burner itself should be as small as possible be kept low, medium and low with the help of a single type of burner high calorific fuels can be burned. After all, a procedure is supposed to be specified for the operation of a burner that combusts the combustion of low, medium and high calorific fuels with constant or reduced Emission values is possible. It should also be possible to use fuels to be able to burn easily with a high hydrogen content.

Die Lösung der der Erfindung zugrunde liegenden Aufgabe ist im Anspruch 1 angegeben, der einen erfindungsgemäßen Brenner zum Gegenstand hat. Ebenso ist im Anspruch 12 die Erfindungsidee auf einen verallgemeinerten Brenner bezogen. Gegenstand des Anspruchs 10 ist ein erfindungsgemäßes Verfahren. Den Erfindungsgedanken vorteilhaft weiterbildende Merkmale sind Gegenstand der Unteransprüche.The solution to the problem on which the invention is based is specified in claim 1, the subject of a burner according to the invention. Likewise in claim 12, the idea of the invention related to a generalized burner. The subject of claim 10 is a method according to the invention. The idea of the invention Advantageously further developing features are the subject of the subclaims.

Erfindungsgemäß wird eine Eindüsungsvorrichtung jeweils in Strömungsrichtung vor den Lufteintrittsschlitzen angeordnet, daß der in den Verbrennungszuluftstrom einzubringende Brennstoff parallel zur Strömungsrichtung des Verbrennungszuluftstromes in die Lufteintrittsschlitze eingedüst wird. Durch die parallele Brennstoffeinspeisung werden jegliche Turbulenzen innerhalb des Verbrennungszuluftstromes vermieden, wodurch keine irritierende Wirbelbildungen entstehen, die zu lokalen Brennstoffansammlungen führen und Ursache für unkontrollierte Zündereignisse sind.According to the invention, an injection device is in each case in the flow direction arranged in front of the air inlet slots that in the combustion air supply fuel to be introduced parallel to the flow direction of the combustion air supply is injected into the air inlet slots. Due to the parallel fuel feed any turbulence within the combustion supply air flow avoided, which does not lead to irritating eddy formation local fuel accumulations and cause uncontrolled ignition events are.

Die Düsenanordnung ist insbesondere derart ausgelegt, daß die Austrittsgeschwindigkeit des Brennstoffes aus der Düsenanordnung etwaq die gleiche Strömungsgeschwindigkeit aufweist, mit der der Verbrennungszuluftstrom in die Lufteintrittsschlitze eingeleitet wird. Durch das isokinetische Eintrittsverhalten bei Masseströme werden zudem jegliche dynamische Druckunterschiede vermieden, wodurch ebenso störende Wirbelbildungen ausgeschlossen werden können.The nozzle arrangement is particularly designed such that the exit speed the fuel from the nozzle arrangement approximately the same flow rate with which the combustion supply air flow into the Air inlet slots is introduced. Due to the isokinetic entry behavior Mass flows are also avoided any dynamic pressure differences, whereby equally disturbing eddy formation can be excluded.

Die erfindungsgemäße Düsenanordnung weist im Falle des beschriebenen Brennersystems, das über zwei Lufteintrittsschlitze verfügt zwei Eindüsungsvorrichtungen auf, die jeweils in Strömungsrichtung vor den Lufteintrittsschlitzen positioniert sind. Beide Eindüsungsvorrichtungen sind über ein Rahmengestell miteinander fest verbunden und können über entsprechende Verbindungselemente fest am Brenner abnehmbar angebracht werden. Jede der jeweils vorgesehenen Eindüsungsvorrichtungen erstrecken sich längs über die gesamte Länge des Lufteintrittsschlitzes und weisen im Inneren jeweils eine vorzugsweise geradlinig verlaufende Brennstoffzuleitung auf, die über eine verengten Zuleitungskanal mit dem Düsenauslaßbereich verbunden ist.In the case of the burner system described, the nozzle arrangement according to the invention has that has two air inlet slots has two injection devices on, each positioned in the direction of flow in front of the air inlet slots are. Both injection devices are connected to one another via a frame firmly connected and can be attached to the corresponding connecting elements Burner can be attached detachably. Each of the respective injection devices provided extend longitudinally over the entire length of the air inlet slot and each have a preferably rectilinear interior Fuel supply line, which via a narrowed supply duct with the Nozzle outlet area is connected.

Der verengte Zuleitungskanal kann sowohl aus einer Vielzahl einzelner Bohrungen, die längs zum Brennstoffzuleitungskanal verteilt angeordnet sind, als auch als durchgehender Zuleitungsschlitz, der sich über die gesamte Länge der Eindüsungsvorrichtung erstreckt, ausgebildet sein. Der Düsenauslaßbereich ist vorzugsweise als durchgehender Schlitzkanal, der sich über die gesamte Länge der Eindüsungsvorrichtung erstreckt ausgebildet und weist ein Kanal-Länge-Breite-Verhältnis auf, das zu einem gerichteten, nahezu parallel verlaufenden Brennstoffstrahl führt, der zudem, wie bereits vorstehend erwähnt, eine an die Strömungsgeschwindigkeit der Verbrennungszuluft angepaßte Strömungsgeschwindigkeit aufweist.The narrowed supply channel can consist of a large number of individual bores, which are distributed along the fuel supply channel, as well as a continuous feed slot that extends over the entire length of the injection device extends, be formed. The nozzle outlet area is preferred as a continuous slot channel that extends over the entire length of the Injection device extends and has a channel-length-width ratio on that to a directed, almost parallel fuel jet leads, which, as already mentioned above, to the flow velocity flow velocity adapted to the combustion air having.

Kurze Beschreibung der ErfindungBrief description of the invention

Die Erfindung wird nachstehend ohne Beschränkung des allgemeinen Erfindungsgedankens anhand eines Ausführungsbeispiels unter Bezugnahme auf die Zeichnungen exemplarisch beschrieben. Es zeigen:

Fig. 1
schematischer Querschnitt durch eine Eindüsungsvorrichtung, die vor einem Lufteintrittsschlitz angeordnet ist, sowie
Fig. 2
schematische Seitendarstellung eines Brenners mit der erfindungsgemäßen Eindüsungsvorrichtung.
The invention is described below by way of example without limitation of the general inventive concept using an exemplary embodiment with reference to the drawings. Show it:
Fig. 1
schematic cross section through an injection device, which is arranged in front of an air inlet slot, and
Fig. 2
schematic side view of a burner with the injection device according to the invention.

Wege zur Ausführung der Erfindung, gewerbliche VerwendbarkeitWAYS OF CARRYING OUT THE INVENTION, INDUSTRIAL APPLICABILITY

Figur 1 stellt eine schematisierte Querschnittsdarstellung durch den Lufteintrittsschlitz 1 eines nicht weiter im Detail dargestellten Brenners dar. Der Lufteintrittsschlitz 1 wird zum einen begrenzt durch die Außenwandung eines ersten Teilkegelkörpers 2 sowie durch die Innenwandung eines zweiten Teilkegelkörpers 3. In Strömungsrichtung des Brennstoffzuluftstromes 6 ist vor dem Lufteintrittsschlitz 1 eine Eindüsungsvorrichtung 7 vorgesehen, die parallel zu ihrer Längsachse eine Brennstoffzuleitung 8 vorsieht, die über einen verengten Zuleitungskanal 9 mit dem Düsenauslaßbereich 10 der Eindüsungsvorrichtung 7 verbunden ist. Der verengte Zuleitungskanal 9 kann sowohl als eine Vielzahl nebeneinander liegender Einzelbohrungen ausgeführt sein, als auch als durchgehende Schlitzöffnung ausgebildet sein, die sich über die gesamte Länge der Eindüsungsvorrichtung 7 erstreckt. Der verengte Zuleitungskanal 9 hat zum einen die Aufgabe, mögliche auftretende akustische Schwingungen innerhalb der Brennstoffzuleitung 8 vom Düsenauslaßbereich 10 zu entkoppeln. Zum anderen bewirkt der verengte Zuleitungskanal 9 eine Drosselung des im Inneren der Brennstoffzuleitung 8 vorherrschenden Arbeitsdruckes in Richtung des Düsenauslaßbereiches. Der Düsenauslaßbereich weist eine an die Druck- und Strömungsverhältnisse des Brennstoffes angepaßte Länge sowie Breite auf, wodurch gezielt ein Brennstoffströmungsfeld 13 erzeugt wird, das weitgehend als zweidimensionales Strömungsfeld mit gleicher Geschwindigkeit zum Brennstoffzuluftstrom 6 in den Lufteintrittsschlitz 1 eingebracht werden kann.Figure 1 shows a schematic cross-sectional view through the air inlet slot 1 of a burner, not shown in further detail. The air inlet slot 1 is limited on the one hand by the outer wall of a first partial cone body 2 and through the inner wall of a second partial cone body 3. In the direction of flow of the fuel supply air flow 6 is in front of the air inlet slot 1, an injection device 7 is provided, which is parallel to its longitudinal axis Provides fuel feed line 8 with a narrowed feed channel 9 the nozzle outlet area 10 of the injection device 7 is connected. The narrowed Supply channel 9 can be used as a multitude of side by side Single bores can be designed as well as a continuous slot opening be, which extends over the entire length of the injection device 7. The narrowed supply duct 9 has the task, on the one hand, of possible occurrences acoustic vibrations within the fuel feed line 8 from the nozzle outlet area 10 decouple. Secondly, the narrowed supply channel 9 a throttling of the prevailing inside the fuel feed line 8 Working pressure in the direction of the nozzle outlet area. The nozzle outlet area indicates one of the pressure and flow conditions of the fuel adjusted length as well as width, creating a targeted fuel flow field 13 is generated, largely as a two-dimensional flow field at the same speed to the fuel supply air flow 6 in the air inlet slot 1 can be introduced.

In Figur 2 ist eine Seitendarstellung des erfindungsgemäß erweiterten Brenners dargestellt, der aus dem ersten Teilkegelkörpers 2 sowie dem zweiten Teilkegelkörper 3 zusammengesetzt ist. Beide Teilkegelkörper schließen zwei Lufteintrittsschlitze ein, von denen in Figur 2 der Lufteintrittsschlitz 1 dargestellt ist. In Strömungsrichtung vor dem Lufteintrittsschlitz 1 ist eine Eindüsungsvorrichtung 7 vorgesehen, die wenigstens einseitig mit einer Basisplatte 10 des Brenners fest lösbar verbunden ist. Über einen vorzugsweise ringförmig ausgebildeten Rahmen 12 ist die Eindüsungsvorrichtung 7 mit der ihr am Brenner gegenüberliegenden (in der Figur 2 hinteren) Eindüsungsvorrichtung verbunden.In Figure 2 is a side view of the burner expanded according to the invention shown, which consists of the first partial cone body 2 and the second partial cone body 3 is composed. Both partial cone bodies close two air inlet slots one, of which the air inlet slot 1 is shown in FIG. In the direction of flow An injection device 7 is provided in front of the air inlet slot 1, which can be fixed at least on one side with a base plate 10 of the burner connected is. Via a preferably ring-shaped frame 12 is the injection device 7 with its opposite on the burner (in of the rear 2) injection device connected.

Die erfindungsgemäße Eindüsungsvorrichtung kann zur Montage über bestehende Brennersysteme geführt werden und geeigneter Weise fest am Brenner verbunden werden. Auf diese Weise ist die Eindüsungsvorrichtung als Zusatzmodul anzusehen, das beliebig nachrüstbar ist.The injection device according to the invention can be installed over existing ones Burner systems are guided and suitably firmly connected to the burner become. In this way, the injection device is an additional module view that can be retrofitted as desired.

BezugszeichenlisteReference list

11
LufteintrittsschlitzAir inlet slot
22nd
erster Teilkegelkörperfirst partial cone body
33rd
zweiter Teilkegelkörpersecond partial cone body
44th
Rohr für gasförmigen Brennstoff, entlang des Brenners angeordnetGaseous fuel pipe arranged along the burner
55
Bohrungsreihen, quer zur eintretenden Luftströmung (6)Row of holes, transverse to the incoming air flow (6)
66
VerbrennungszuluftströmungCombustion air flow
77
EindüsungsvorrichtungInjection device
88th
BrennstoffzuleitungFuel supply
99
verengter Zuleitungskanalnarrow supply duct
1010th
DüsenauslaßbereichNozzle outlet area
1111
BasisplatteBase plate
1212th
Rahmenframe
1313
BrennstoffströmungsfeldFuel flow field

Claims (12)

Brenner zum Betrieb einer Brennkraftmaschine, einer Brennkammer einer Gasturbogruppe oder Feuerungsanlage, mit wenigstens zwei halben, hohlen Teilkegelkörpern (2, 3), die derart ineinander gefügt sind, daß deren Längssymmetrieachsen zueinander radial versetzt verlaufen und die mindestens zwei tangentiale Lufteintrittsschlitze (1) für einen Verbrennungszuluftstrom (6) sowie einen Kegelhohlraum einschließen, einer Düsenanordnung zum Eindüsen flüssigen, hochreaktiven Brennstoffes in den Kegelhohlraum, die im Bereich des engsten Innendurchmessers des Kegelhohlraumes angeordnet ist, dadurch gekennzeichnet, daß in Richtung des Verbrennungszuluftstromes (6) vor den tangentialen Lufteintrittsschlitzen (1) jeweils eine Eindüsungsvorrichtung (7) für Brennstoff vorgesehen ist, die den Brennstoff in paralleler Strömungsrichtung zum Verbrennungszuluftstrom (6) in die Lufteintrittsschlitz (1) eindüst.Burner for operating an internal combustion engine, a combustion chamber Gas turbine group or furnace, with at least two halves, hollow Partial cone bodies (2, 3) which are joined together in such a way that their The longitudinal axes of symmetry are radially offset from one another and the at least two tangential air inlet slots (1) for a combustion air flow (6) and include a cone cavity, a nozzle arrangement for injecting liquid, highly reactive fuel into the cone cavity, those in the area of the narrowest inner diameter of the cone cavity is arranged, characterized in that in the direction of the combustion supply air flow (6) in front of the tangential air inlet slots (1) In each case a fuel injection device (7) is provided, which the fuel in the parallel flow direction to the combustion supply air flow (6) inject into the air inlet slot (1). Brenner nach Anspruch 1, dadurch gekennzeichnet, daß die Eindüsungsvorrichtung (7) den Brennstoff isokinetisch relativ zur Verbrennungszuluft (6) eindüst.Burner according to claim 1, characterized in that the injection device (7) the fuel isokinetic relative to the combustion air supply (6) injected. Brenner nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die einzelnen Eindüsungsvorrichtungen (7) pro Lufteintrittsschlitz (1) über einem zusammenhängenden Rahmen (12) miteinander verbunden sind und als einheitliches Modul ausgebildet ist, das an den Brenner befestigbar ist.Burner according to claim 1 or 2, characterized in that the individual Injection devices (7) per air inlet slot (1) over a coherent Frame (12) are interconnected and as a unit Is formed module that can be attached to the burner. Brenner nach Anspruch 3, dadurch gekennzeichnet, daß das Modul am Brenner nachträglich aufsetzbar und befestigbar ist.Burner according to claim 3, characterized in that the module on Burner can be retrofitted and fastened. Brenner nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Eindüsungsvorrichtung (7) eine linear verlaufende Brennstoffzuleitung (8) aufweist, die über einen relativ zu einem Düsenaulaßbereich (10) verengten Zuleitungskanal (9) mit diesem verbunden ist.Burner according to one of claims 1 to 4, characterized in that the injection device (7) has a linear fuel feed line (8), which narrowed relative to a nozzle outlet area (10) Supply channel (9) is connected to this. Brenner nach Anspruch 5, dadurch gekennzeichnet, daß der Düsenauslaßbereich (10) als Schlitzdüse ausgebildet ist, der sich längs über die gesamte Länge des Lufteintrittsschlitz (1) erstreckt.Burner according to claim 5, characterized in that the nozzle outlet area (10) is designed as a slot nozzle, which extends longitudinally over the entire Length of the air inlet slot (1) extends. Brenner nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Eindüsungsvorrichtung (7) eine Vielzahl von Einzelstrahldüsen aufweist, die einen über die Länge des Lufteintrittsschlitzes (1) weitgehend homogenen Brennstoffstrahl (13) erzeugen.Burner according to one of claims 1 to 5, characterized in that the injection device (7) has a multiplicity of individual jet nozzles, the one largely homogeneous over the length of the air inlet slot (1) Generate fuel jet (13). Brenner nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Eindüsungsvorrichtung (7) für mittel- und niederkalorische Brennstoffe vorgesehen ist.Burner according to one of claims 1 to 7, characterized in that the injection device (7) for medium and low calorific fuels is provided. Brenner nach Anspruch 8, dadurch gekennzeichnet, daß der Brennstoff Heizwerte zwischen 5 und 50 MJ/kg aufweist.Burner according to claim 8, characterized in that the fuel Has calorific values between 5 and 50 MJ / kg. Verfahren zum Betrieb einer Brennkraftmaschine, einer Brennkammer einer Gasturbogruppe oder Feuerungsanlage, mit wenigstens zwei halben, hohlen Teilkegelkörpern (2, 3), die derart ineinander gefügt sind, daß deren Längssymmetrieachsen zueinander radial versetzt verlaufen und die mindestens zwei tangentiale Lufteintrittsschlitze (1) für einen Verbrennungszuluftstrom (6), dadurch gekennzeichnet, daß nieder- oder mittelkalorischer, gasförmiger Brennstoff parallel zum Verbrennungszuluftstrom (6) vor oder bei Eintritt in den Lufteintrittsschlitz (1) dem Zu luftstrom beigemischt wird.Method for operating an internal combustion engine, a combustion chamber Gas turbine group or furnace, with at least two halves, hollow Partial cone bodies (2, 3) which are joined together in such a way that their The longitudinal axes of symmetry are radially offset from one another and the at least two tangential air inlet slots (1) for a combustion air flow (6), characterized in that low or medium calorie, gaseous fuel in front of or parallel to the combustion supply air flow (6) when entering the air inlet slot (1) is added to the air flow. Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß der Brennstoff dem Verbrennungszuluftstrom (6) isokinetisch beigemischt wird. A method according to claim 10, characterized in that the fuel is isokinetically added to the combustion supply air flow (6). Brenner zum Betrieb einer Brennkraftmaschine, einer Brennkammer einer Gasturbogruppe oder Feuerungsanlage, mit wenigstens einem tangential zur Brennkammer angeordneten Lufteintrittsschlitz (1), durch den ein Verbrennungszuluftstrom (6) in die Brennkammer einströmt, sowie einer Düsenanordnung zum Eindüsen flüssigen, hochreaktiven Brennstoffes in die Brennkammer, dadurch gekennzeichnet, daß in Richtung des Verbrennungszuluftstromes (6) vor dem tangentialen Lufteintrittsschlitz (1) jeweils eine Eindüsungsvorrichtung (7) für Brennstoff vorgesehen ist, die den Brennstoff in paralleler Strömungsrichtung zum Verbrennungszuluftstrom (6) in den Lufteintrittsschlitz (1) eindüst.Burner for operating an internal combustion engine, a combustion chamber Gas turbine group or furnace, with at least one tangential to the combustion chamber arranged air inlet slot (1) through which a combustion air flow (6) flows into the combustion chamber, and a nozzle arrangement for injecting liquid, highly reactive fuel into the Combustion chamber, characterized in that in the direction of the combustion supply air flow (6) in front of the tangential air inlet slot (1) each an injection device (7) for fuel is provided, which Fuel in the parallel flow direction to the combustion air flow (6) into the air inlet slot (1).
EP98810805A 1998-08-19 1998-08-19 Burner for operating a combustion chamber Expired - Lifetime EP0981016B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP98810805A EP0981016B1 (en) 1998-08-19 1998-08-19 Burner for operating a combustion chamber
DE59810551T DE59810551D1 (en) 1998-08-19 1998-08-19 Burner for operating a combustion chamber
US09/369,838 US6263676B1 (en) 1998-08-19 1999-08-09 Burner having a frame for operating an internal combustion machine
CN99111501.5A CN1113187C (en) 1998-08-19 1999-08-17 Burner and method for operating internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810805A EP0981016B1 (en) 1998-08-19 1998-08-19 Burner for operating a combustion chamber

Publications (2)

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EP0981016A1 true EP0981016A1 (en) 2000-02-23
EP0981016B1 EP0981016B1 (en) 2004-01-07

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EP (1) EP0981016B1 (en)
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DE (1) DE59810551D1 (en)

Cited By (2)

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EP1734306A1 (en) * 2005-06-17 2006-12-20 ALSTOM Technology Ltd Burner for premix-type combustion
CH701905A1 (en) * 2009-09-17 2011-03-31 Alstom Technology Ltd Method of burning hydrogen-rich, gaseous fuels in a burner and burner for carrying out the method.

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US6585784B1 (en) * 1999-12-13 2003-07-01 Exxonmobil Chemical Patents Inc. Method for utilizing gas reserves with low methane concentrations for fueling gas turbines
JP3940705B2 (en) * 2003-06-19 2007-07-04 株式会社日立製作所 Gas turbine combustor and fuel supply method thereof
EP1614967B1 (en) * 2004-07-09 2016-03-16 Siemens Aktiengesellschaft Method and premixed combustion system
FR2889292B1 (en) * 2005-07-26 2015-01-30 Optimise METHOD AND INSTALLATION FOR COMBUSTION WITHOUT SUPPORT OF POOR COMBUSTIBLE GAS USING A BURNER AND BURNER THEREFOR
EP2299178B1 (en) * 2009-09-17 2015-11-04 Alstom Technology Ltd A method and gas turbine combustion system for safely mixing H2-rich fuels with air

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EP1734306A1 (en) * 2005-06-17 2006-12-20 ALSTOM Technology Ltd Burner for premix-type combustion
US7975486B2 (en) 2005-06-17 2011-07-12 Alstom Technology Ltd Burner for premix-type combustion
CH701905A1 (en) * 2009-09-17 2011-03-31 Alstom Technology Ltd Method of burning hydrogen-rich, gaseous fuels in a burner and burner for carrying out the method.
WO2011032935A3 (en) * 2009-09-17 2012-03-29 Alstom Technology Ltd. Method for combusting hydrogen-rich, gaseous fuels in a burner, and burner for performing said method
US8549860B2 (en) 2009-09-17 2013-10-08 Alstom Technology Ltd Method for combusting hydrogen-rich, gaseous fuels in a burner, and burner for performing said method
DE112010003677B4 (en) 2009-09-17 2023-10-26 Ansaldo Energia Switzerland AG METHOD FOR BURNING HYDROGEN-RICH, GASEOUS FUELS IN A BURNER AND BURNER FOR CARRYING OUT THE METHOD

Also Published As

Publication number Publication date
CN1113187C (en) 2003-07-02
EP0981016B1 (en) 2004-01-07
CN1245276A (en) 2000-02-23
DE59810551D1 (en) 2004-02-12
US6263676B1 (en) 2001-07-24

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