EP2260238A1 - Brenneranordnung sowie anwendung einer solchen brenner-anordnung - Google Patents
Brenneranordnung sowie anwendung einer solchen brenner-anordnungInfo
- Publication number
- EP2260238A1 EP2260238A1 EP09717497A EP09717497A EP2260238A1 EP 2260238 A1 EP2260238 A1 EP 2260238A1 EP 09717497 A EP09717497 A EP 09717497A EP 09717497 A EP09717497 A EP 09717497A EP 2260238 A1 EP2260238 A1 EP 2260238A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- burner
- section
- fuel
- swirl generator
- cross
- 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
Links
Classifications
-
- 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
- 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
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
- F23C2900/07002—Premix burners with air inlet slots obtained between offset curved wall surfaces, e.g. double cone burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- 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
- F23C2900/9901—Combustion process using hydrogen, hydrogen peroxide water or brown gas as fuel
Definitions
- the present invention relates to the field of combustion technology. It relates to a burner assembly according to the preamble of claim 1.
- burner arrangements For a long time burner arrangements have been known from the prior art, which according to FIG. 1 comprise a premix burner 11 in the form of a double-cone burner which produces an air / fuel mixture 12 and a subsequent mixing tube 13 opening into a combustion chamber 14 (EP-A).
- These known burner arrangements 10, designated as AEV burners are designed for the combustion of natural gas and / or oil, but are not suitable for the combustion of highly reactive fuels, in particular fuels with a high hydrogen content, because it leads to a reignition (Flashback) can come from the combustion chamber in the interior of the premix burner.
- Premix burner can be converted from a cylindrical shape into a conically tapered configuration to achieve the following:
- the object is solved by the entirety of the features of claim 1.
- Essential for the invention is a mixing tube which has a constriction, wherein at the height of the constriction means are provided for the injection of highly reactive, in particular H2-rich fuel. Based on the above conical shape of the mixing tube, in which the constriction is located at the exit of the tube, the constriction (as constriction) can be moved upstream. The highly reactive fuel is then injected directly at the bottleneck.
- An embodiment of the invention is characterized in that the mixing tube tapers conically in a first mixing pipe section from the swirl generator to constriction, and that the mixing tube in a second mixing pipe section from the constriction to the combustion chamber in diameter significantly smaller than at the output of the swirl generator Case is ..
- the second mixing pipe section starting at the constriction can have a constant diameter up to the combustion chamber.
- the second mixing pipe section can also be slightly conical up to the combustion chamber.
- the means for injecting highly reactive, in particular H2-rich, fuel in the region of the constriction comprise nozzles which take over a fuel feed.
- premix burner As far as the design of the premix burner is concerned, it is readily possible to provide it without a transition section between the swirl generator and the mixing tube.
- a premix burner is known from EP-A1-0 321 809. Accordingly, the disclosure of this document, and the following further developments of this burner technology, with regard to the construction of the swirl generator expressly forms an integral part of this application.
- a further embodiment of the premix burner envisages providing transition channels for transferring a swirl flow formed in the swirl generator into the flow cross-section of the mixing tube downstream of these transition channels in a transition region between swirl generator and mixing tube. Such an embodiment is apparent from EP-O 704 657 A1, wherein the disclosure of this document also forms an integral part of this application.
- a further embodiment of the premix burner provides to provide a cylindrical or quasi-cylindrical tube, which consists of partial shells, and in which the combustion air flow flows through tangentially arranged air inlet slots or channels in the interior.
- the desired swirling of the combustion air stream to maximize the desired premix with at least one fuel injected at a suitable point is achieved by a conical or quasi-conically extending in the flow direction of the inner body. mitbewerkstelligt. Such an embodiment is apparent, for example, from EP-0 777 081 A1, the disclosure of this document forming an integral part of this application.
- the burner assembly according to the invention is advantageously used to operate a gas turbine plant with at least one combustion chamber.
- 1 is a highly schematic representation of a known burner arrangement of a premix burner with a swirl generator and a subsequent mixing tube;
- FIG. 2 in a comparable to Fig. 1 representation of a burner assembly according to a first embodiment of the invention
- FIG. 3 in a comparable to Fig. 1 representation of a burner assembly according to a second embodiment of the invention.
- FIG. 2 shows, in a representation comparable to FIG. 1, a burner arrangement according to a first exemplary embodiment of the invention.
- the burner assembly 16 comprises a premix burner 11, the shape of which results from the abovementioned document EP-A1-0 321 809.
- the air flowing in tangentially into the interior of the premix burner 11 is enriched with a fuel, and the swirling motion forming there forms a mixture 12.
- Downstream of the premix burner 11 is a mixing tube 17, which is subdivided into two (in this example approximately the same length) mixing tube sections 17a and 17b. Between the two mixing pipe sections 17a, 17b is a Constriction 18 formed.
- the mixing tube 17 tapers conically or quasi-conically.
- the mixing tube 17 is significantly smaller in diameter than at the beginning (entrance) of the first mixing pipe section 17a, wherein it has a constant or quasikonstanten diameter downstream of said constriction 18.
- the cylindrical mixing tube portion 17b downstream of the constriction 18 with its significantly reduced diameter is characterized by high air velocities, which prevent flashback.
- This section also represents at the same time the mixing section, which allows a good air / fuel mixture at the outlet of the burner assembly 17.
- An additional important feature of this burner assembly 17 is the utilization of the Venturi effect.
- a further advantage of the invention is that the premix burner is still suitable for the lean standard premixing operation with natural gas and oil, provided that care is taken that the fuel does not accumulate on the walls of the convergent first mixing pipe portion 17a.
- the burner assembly 16 according to FIG. 2 enables operation with 3 fuels ("tri-fuel operation").
- the lower mixing pipe section 21 b is not cylindrical, but slightly conically or quasi-conically widening towards the combustion chamber 14. Such a geometry reduces the tendency of the fuel to accumulate in the immediate vicinity of the walls of the mixing section (21b), thus increasing the resistance to flashback.
- Benefits also arise when an improvement of the radial distribution of the fuel due to the divergent streamlines is sought.
- Burner arrangements according to the invention are particularly suitable for generating hot gas in gas turbine plants, in which fuels with a high hydrogen content are burned.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
- Spray-Type Burners (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH3482008 | 2008-03-07 | ||
PCT/EP2009/051632 WO2009109448A1 (de) | 2008-03-07 | 2009-02-12 | Brenneranordnung sowie anwendung einer solchen brenner-anordnung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2260238A1 true EP2260238A1 (de) | 2010-12-15 |
EP2260238B1 EP2260238B1 (de) | 2015-12-23 |
Family
ID=39523270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09717497.3A Not-in-force EP2260238B1 (de) | 2008-03-07 | 2009-02-12 | Verfahren zum Betrieb eines Vormischbrenners |
Country Status (4)
Country | Link |
---|---|
US (1) | US20110056205A1 (de) |
EP (1) | EP2260238B1 (de) |
JP (1) | JP5449205B2 (de) |
WO (1) | WO2009109448A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2299178B1 (de) | 2009-09-17 | 2015-11-04 | Alstom Technology Ltd | Verfahren und Gasturbinenverbrennungssystem zum sicheren Mischen von H2-reichen Brennstoffen mit Luft |
GB0920094D0 (en) | 2009-11-17 | 2009-12-30 | Alstom Technology Ltd | Reheat combustor for a gas turbine engine |
EP2703721B1 (de) | 2012-08-31 | 2019-05-22 | Ansaldo Energia IP UK Limited | Vormischbrenner |
CN105899878B (zh) | 2013-06-18 | 2018-11-13 | 伍德沃德有限公司 | 燃气涡轮燃烧室组件及发动机及相关联的操作方法 |
US9482433B2 (en) | 2013-11-11 | 2016-11-01 | Woodward, Inc. | Multi-swirler fuel/air mixer with centralized fuel injection |
US9587833B2 (en) | 2014-01-29 | 2017-03-07 | Woodward, Inc. | Combustor with staged, axially offset combustion |
EP2930430A1 (de) * | 2014-04-07 | 2015-10-14 | Siemens Aktiengesellschaft | Brennerspitze und Brenner für eine Gasturbine |
US11940151B2 (en) | 2022-01-12 | 2024-03-26 | General Electric Company | Combustor with baffle |
US12018839B2 (en) | 2022-10-20 | 2024-06-25 | General Electric Company | Gas turbine engine combustor with dilution passages |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4420929A (en) * | 1979-01-12 | 1983-12-20 | General Electric Company | Dual stage-dual mode low emission gas turbine combustion system |
CH674561A5 (de) * | 1987-12-21 | 1990-06-15 | Bbc Brown Boveri & Cie | |
DE4316474A1 (de) * | 1993-05-17 | 1994-11-24 | Abb Management Ag | Vormischbrenner zum Betrieb einer Brennkraftmaschine, einer Brennkammer einer Gasturbogruppe oder Feuerungsanlage |
DE4409567A1 (de) * | 1994-03-21 | 1995-09-28 | Abb Management Ag | Verfahren zur Kühlung von thermisch belasteten Komponenten einer Gasturbogruppe |
DE4417538A1 (de) * | 1994-05-19 | 1995-11-23 | Abb Management Ag | Brennkammer mit Selbstzündung |
DE4426351B4 (de) * | 1994-07-25 | 2006-04-06 | Alstom | Brennkammer für eine Gasturbine |
DE4435266A1 (de) * | 1994-10-01 | 1996-04-04 | Abb Management Ag | Brenner |
DE19545026A1 (de) * | 1995-12-02 | 1997-06-05 | Abb Research Ltd | Vormischbrenner |
DE19640198A1 (de) * | 1996-09-30 | 1998-04-02 | Abb Research Ltd | Vormischbrenner |
EP0913630B1 (de) * | 1997-10-31 | 2003-03-05 | ALSTOM (Switzerland) Ltd | Brenner für den Betrieb eines Wärmeerzeugers |
DE19757189B4 (de) * | 1997-12-22 | 2008-05-08 | Alstom | Verfahren zum Betrieb eines Brenners eines Wärmeerzeugers |
DE10056243A1 (de) * | 2000-11-14 | 2002-05-23 | Alstom Switzerland Ltd | Brennkammer und Verfahren zum Betrieb dieser Brennkammer |
JP4913746B2 (ja) * | 2004-11-30 | 2012-04-11 | アルストム テクノロジー リミテッド | 予混合バーナー内の水素を燃焼する方法及び装置 |
EP1828684A1 (de) * | 2004-12-23 | 2007-09-05 | Alstom Technology Ltd | Vormischbrenner mit mischstrecke |
-
2009
- 2009-02-12 WO PCT/EP2009/051632 patent/WO2009109448A1/de active Application Filing
- 2009-02-12 EP EP09717497.3A patent/EP2260238B1/de not_active Not-in-force
- 2009-02-12 JP JP2010549073A patent/JP5449205B2/ja not_active Expired - Fee Related
-
2010
- 2010-09-07 US US12/876,687 patent/US20110056205A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2009109448A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20110056205A1 (en) | 2011-03-10 |
WO2009109448A1 (de) | 2009-09-11 |
EP2260238B1 (de) | 2015-12-23 |
JP2011515641A (ja) | 2011-05-19 |
JP5449205B2 (ja) | 2014-03-19 |
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