EP0981016B1 - Brûleur pour le fonctionnement d'une chambre de combustion - Google Patents

Brûleur pour le fonctionnement d'une chambre de combustion Download PDF

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Publication number
EP0981016B1
EP0981016B1 EP98810805A EP98810805A EP0981016B1 EP 0981016 B1 EP0981016 B1 EP 0981016B1 EP 98810805 A EP98810805 A EP 98810805A EP 98810805 A EP98810805 A EP 98810805A EP 0981016 B1 EP0981016 B1 EP 0981016B1
Authority
EP
European Patent Office
Prior art keywords
burner
fuel
burner according
air inlet
combustion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98810805A
Other languages
German (de)
English (en)
Other versions
EP0981016A1 (fr
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
Alstom Schweiz AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alstom Schweiz AG filed Critical Alstom Schweiz AG
Priority to EP98810805A priority Critical patent/EP0981016B1/fr
Priority to DE59810551T priority patent/DE59810551D1/de
Priority to US09/369,838 priority patent/US6263676B1/en
Priority to CN99111501.5A priority patent/CN1113187C/zh
Publication of EP0981016A1 publication Critical patent/EP0981016A1/fr
Application granted granted Critical
Publication of EP0981016B1 publication Critical patent/EP0981016B1/fr
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, according to the preamble of expression 1.
  • a burner of the type mentioned above goes for example from the EP 0321 809 B1 and is used with great success to fire gas turbine systems used.
  • This type of burner is considered a successful type of burner, those for firing with highly reactive, gaseous and liquid fuels designed with a high calorific value of around 35 to 50 MJ / kg are. Hebei 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 European patent application EP-A1-0 433 790 discloses a burner with one in Flow direction opening cone shape. This burner also explores two positioned partial cone bodies, the central axis of which are offset from one another in the longitudinal direction get lost together. This dislocation is formed over the length of the burner tangential entry slot to the interior of the burner.
  • the fuel supply happens centrally via a nozzle and tangentially in the area of the inlet slots via a fuel line, which is provided with fuel openings, there the injection of the fuel take.
  • a channel is formed above each inlet slot, which is connected to an injector is equipped. Another fuel is introduced through this injector.
  • the Air / fuel mixture with fuel from the injector and / or fuel from the fuel line generally flows as an air / fuel mixture through the tangential entry slots into the interior of the burner. There is another mixture with the fuel the nozzle instead.
  • the patent FR 1,535,610 discloses a burner for gaseous fuels with a Multiple injection and an integrated mixer.
  • 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 are intended for existing 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-calorie fuels can be burned. It should also be possible to use fuels to be able to burn easily with a high hydrogen content.
  • the 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.
  • the frame can subsequently attached to the burner and fastened.
  • an injection device can in each case in the flow direction be 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 supply air flow 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 vortex formation local fuel accumulation and cause of 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 which has two air inlet slots, two injection devices on, each positioned in the flow direction in front of the air inlet slots are.
  • Each of the intended injection devices 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, formed 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 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 Individual bores are 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.
  • 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 burner has a front one Base plate 11 on which the frame is attached.
  • 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.

Landscapes

  • 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)

Claims (12)

  1. Brûleur destiné au fonctionnement d'une chambre de combustion,
    avec au moins deux demi-corps coniques partiels creux (2, 3) qui sont joints l'un à l'autre de manière telle que leurs axes de symétrie longitudinale s'étendent de manière décalée radialement l'un par rapport à l'autre et qui comprennent au moins deux fentes d'entrée d'air tangentielles (1) pour un flux d'air de combustion (6) ainsi qu'un espace creux conique,
    une disposition de buse d'injection pour combustible liquide fortement réactif dans l'espace creux conique qui est disposé dans la zone du plus petit diamètre intérieur de l'espace creux conique,
    où, dans le sens du flux d'air de combustion (6), on a prévu à chaque fois un dispositif d'injection (7) de combustible, par lequel le combustible peut être injecté dans un sens d'écoulement parallèle au flux d'air de combustion (6) dans la fente d'entrée d'air (1),
    caractérisé en ce que
    les différents dispositifs d'injection (7) par fente d'entrée d'air (1) sont reliés entre eux via un cadre (12) continu et en ce qu'il est réalisé en tant que module unitaire qui peut être fixé sur le brûleur.
  2. Brûleur selon la revendication 1, caractérisé en ce que le module peut être monté et fixé ultérieurement sur le brûleur.
  3. Brûleur selon la revendication 1 ou 2, caractérisé en ce que le dispositif d'injection (7) du combustible est prévu dans le sens du flux d'air de combustion (6) en amont des fentes d'entrée d'air tangentielles (1).
  4. Brûleur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le dispositif d'injection (7) injecte le combustible de manière isocinétique par rapport à l'air de combustion (6).
  5. Brûleur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le dispositif d'injection (7) présente une conduite d'arrivée de combustible (8) s'étendant en ligne droite, lequel dispositif est relié à celle-ci via un canal d'arrivée (9) relativement rétréci par rapport à une zone de sortie de buse (10).
  6. Brûleur selon la revendication 5, caractérisé en ce que la zone de sortie de buse (10) est conçue en tant que buse à fente qui s'étend sur toute la longueur de la fente d'entrée d'air (1).
  7. Brûleur selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le dispositif d'injection (7) présente un grand nombre de buses d'injection individuelles qui génèrent un jet de combustible (13) quasiment homogène sur la longueur de la fente d'entrée d'air (1).
  8. Brûleur selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le dispositif d'injection (7) est prévu pour des combustibles faiblement et moyennement caloriques.
  9. Brûleur selon la revendication 8, caractérisé en ce que le pouvoir calorifique du combustible se situe entre 5 et 50 MJ/kg.
  10. Brûleur selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le cadre continu (12) est de forme annulaire.
  11. Brûleur selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le brûleur présente une plaque de base avant (11) sur laquelle le cadre continu (12) est fixé.
  12. Brûleur selon l'une quelconque des revendications 1 à 11, caractérisé en ce que le brûleur est un brûleur destiné à faire fonctionner une chambre de combustion d'un turbogroupe à turbine à gaz ou d'un équipement de chauffe.
EP98810805A 1998-08-19 1998-08-19 Brûleur pour le fonctionnement d'une chambre de combustion Expired - Lifetime EP0981016B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP98810805A EP0981016B1 (fr) 1998-08-19 1998-08-19 Brûleur pour le fonctionnement d'une chambre de combustion
DE59810551T DE59810551D1 (de) 1998-08-19 1998-08-19 Brenner zum Betrieb einer Brennkammer
US09/369,838 US6263676B1 (en) 1998-08-19 1999-08-09 Burner having a frame for operating an internal combustion machine
CN99111501.5A CN1113187C (zh) 1998-08-19 1999-08-17 运行内燃机器的燃烧器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810805A EP0981016B1 (fr) 1998-08-19 1998-08-19 Brûleur pour le fonctionnement d'une chambre de combustion

Publications (2)

Publication Number Publication Date
EP0981016A1 EP0981016A1 (fr) 2000-02-23
EP0981016B1 true EP0981016B1 (fr) 2004-01-07

Family

ID=8236263

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810805A Expired - Lifetime EP0981016B1 (fr) 1998-08-19 1998-08-19 Brûleur pour le fonctionnement d'une chambre de combustion

Country Status (4)

Country Link
US (1) US6263676B1 (fr)
EP (1) EP0981016B1 (fr)
CN (1) CN1113187C (fr)
DE (1) DE59810551D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (ja) * 2003-06-19 2007-07-04 株式会社日立製作所 ガスタービン燃焼器及びその燃料供給方法
EP1614967B1 (fr) * 2004-07-09 2016-03-16 Siemens Aktiengesellschaft Procédé et système de combustion à prémélange
EP1734306B1 (fr) 2005-06-17 2010-09-08 Alstom Technology Ltd Brûleur pour combustion à prémélange
FR2889292B1 (fr) * 2005-07-26 2015-01-30 Optimise Procede et installation de combustion sans soutien de gaz combustible pauvre a l'aide d'un bruleur et bruleur associe
EP2299178B1 (fr) * 2009-09-17 2015-11-04 Alstom Technology Ltd Procédé et système de combustion de turbine à gaz pour mélanger sans danger des carburants riches en H2 avec de l'air
CH701905A1 (de) 2009-09-17 2011-03-31 Alstom Technology Ltd Verfahren zum Verbrennen wasserstoffreicher, gasförmiger Brennstoffe in einem Brenner sowie Brenner zur Durchführung des Verfahrens.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1535610A (fr) * 1967-06-26 1968-08-09 Gaz De France Brûleurs pour combustibles gazeux à multiple injection et mélangeur intégré
CH674561A5 (fr) 1987-12-21 1990-06-15 Bbc Brown Boveri & Cie
CH680946A5 (fr) * 1989-12-19 1992-12-15 Asea Brown Boveri
CH680467A5 (fr) * 1989-12-22 1992-08-31 Asea Brown Boveri
CH682952A5 (de) * 1991-03-12 1993-12-15 Asea Brown Boveri Brenner für eine Vormischverbrennung eines flüssigen und/oder gasförmigen Brennstoffes.
DE4237187A1 (de) * 1992-11-04 1994-05-05 Raimund Prof Dr Ruderich Wirbelerzeuger für einen Brenner
DE4304213A1 (de) * 1993-02-12 1994-08-18 Abb Research Ltd Brenner zum Betrieb einer Brennkraftmaschine, einer Brennkammer einer Gasturbogruppe oder Feuerungsanlage
DE19502796B4 (de) * 1995-01-30 2004-10-28 Alstom Brenner

Also Published As

Publication number Publication date
EP0981016A1 (fr) 2000-02-23
CN1113187C (zh) 2003-07-02
CN1245276A (zh) 2000-02-23
DE59810551D1 (de) 2004-02-12
US6263676B1 (en) 2001-07-24

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