EP0925472A1 - Verfahren und einrichtung zur verbrennung von brennstoff mit luft - Google Patents
Verfahren und einrichtung zur verbrennung von brennstoff mit luftInfo
- Publication number
- EP0925472A1 EP0925472A1 EP97941847A EP97941847A EP0925472A1 EP 0925472 A1 EP0925472 A1 EP 0925472A1 EP 97941847 A EP97941847 A EP 97941847A EP 97941847 A EP97941847 A EP 97941847A EP 0925472 A1 EP0925472 A1 EP 0925472A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- burner
- burners
- combustion chamber
- fuel
- 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
- F23D23/00—Assemblies of two or more burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M20/00—Details of combustion chambers, not otherwise provided for, e.g. means for storing heat from flames
- F23M20/005—Noise absorbing means
-
- 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
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/00014—Reducing thermo-acoustic vibrations by passive means, e.g. by Helmholtz resonators
Definitions
- the invention relates to a method for the combustion of fuel with air in a combustion chamber, to which the air is supplied through at least one air inlet and the fuel through several burners, each burner having an associated delay time which corresponds to a time period after which a acoustic impulse in the combustion chamber causes a thermal impulse during the combustion of the fuel supplied via this burner.
- the invention also relates to a corresponding device for the combustion of fuel with air.
- the invention relates in particular to a method and a device of the type mentioned at the outset for use in a gas turbine, a gas turbine being a composite of a compressor for air, a combustion device comprising at least one combustion chamber for burning a fuel in the air to form a flue gas and a turbine in the true sense to relax the flue gas.
- the turbine can be of several parts, that is to say it can comprise a plurality of subtowers connected behind one another; the same applies to the compressor.
- the compressor is in particular a turbo compressor. As part of common practice, the turbine drives the compressor.
- a combustion vibration is generally based on one
- the delay time of a burner in a combustion chamber is composed of various summands, which can each be traced back to individual components of the system comprising the burner, combustion chamber and frame.
- the summands related to the burner and the combustion chamber are mainly determined by the geometry of the burner and the combustion chamber; a summand that can be traced back to the flame itself is essentially determined by the properties of the combustion itself.
- the summand itself can be further broken down into a "convective delay time", which characterizes a transport time for the transport of the reactants to the flame front, where the combustion starts, a "heating time", which the
- reaction kinetic delay time Time for the heating up of the reactants to the temperature required for ignition, as well as a "reaction kinetic delay time", which is determined by the course of the combustion itself. As a rule, the convective delay time clearly outweighs the other two summands.
- Throttling points, resonators and / or mufflers are used, see the mentioned book by Putnam, pp. 156-175, or that the fuel is supplied by an active modulation with the aim of decoupling the energy release from acoustic vibrations in the combustion chamber.
- active instability control Such a measure is referred to as “active instability control”; for explanation see the article "The ⁇ active instability control 'as a method of investigation for self-excited combustion stabilities" by S. Gleis and D. Vortmeyer, VDI-Reports No. 765 (1989), p. 645 -656.
- the object of the invention to provide new passive measures on a combustion chamber with a plurality of burners, which are suitable for reliably suppressing combustion vibrations.
- the measures should be applicable to both liquid and gaseous fuels regardless of the apparatus and non-functional details of the combustion chamber. No moving parts or other active components should be used.
- the invention is intended to specify both a corresponding method and a corresponding device.
- a method for combusting fuel with air in a combustion chamber is specified, to which the air is supplied through at least one air inlet and the fuel is supplied through several burners, each burner having an associated delay time, which is one Corresponds to the period of time after which an acoustic pulse m of the combustion chamber causes a thermal pulse in the combustion of the fuel supplied via this burner, and the supply of the fuel via the burner and the supply of air via the air inlet are controlled in such a way that the delay times of the Burners are significantly different from one another.
- the method for use in connection with a combustion chamber which is resonant for an acoustic oscillation with a certain period the associated delay time of each burner between an integral multiple minus a quarter and the integral multiple plus a quarter of the period lies.
- the term "integer multiple” also includes zero. It goes without saying that the delay time cannot, by definition, assume negative values.
- the feature that the combustion chamber is resonant for a certain acoustic oscillation should not be interpreted as a limitation to this effect. that only the combustion chamber should determine this resonance; it is understood that the combustion chamber is usually part of a more or less complex overall acoustic system, the resonance with all essential parameters being defined by the overall acoustic system.
- premix combustion is of particular interest because it takes place at lower temperatures than the diffusion combustion that can be achieved with simpler means and therefore significantly less than the diffusion combustion for product tion of nitrogen oxides. It is important in this context that the invention also compensates for the thermodynamic-acoustic problems of premixed combustion mentioned at the beginning.
- the burners in the device are geometrically identical to one another, and the fuel supply is set up to supply the fuel to the burners at respective rates, which rates are substantially different from one another.
- the device for use on a gas turbine is particularly preferred, the combustion chamber being arranged between a compressor and a turbine of the gas turbine.
- FIG. 1 shows a gas turbine and a device for the combustion of a fuel with air
- 2 shows a plan view of a combustion chamber with a plurality of burners
- 3 shows a schematic cross section through a combustion chamber with several burners.
- a premix burner brings a mixture from fuel and air with a defined composition for combustion, so that the combustion can be controlled much more sensitively than with a diffusion burner, where the process of mixing fuel and air is practically not controllable
- orifices 16 are mounted in front of four of the five burners 7, each of which partially covers the corresponding swirl blades 14 and thus acts as a throttle for the air flow entering the burner 7. This has the effect that the decisive operating parameters of all burners 7 are different from one another, so that the burner 7 cannot work together to excite combustion vibrations in the combustion chamber 5.
- the explanations made as preferred embodiments of the invention also apply to the exemplary embodiment according to FIG. 2.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19637725 | 1996-09-16 | ||
DE19637725 | 1996-09-16 | ||
PCT/DE1997/001881 WO1998012478A1 (de) | 1996-09-16 | 1997-08-28 | Verfahren und einrichtung zur verbrennung von brennstoff mit luft |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0925472A1 true EP0925472A1 (de) | 1999-06-30 |
EP0925472B1 EP0925472B1 (de) | 2001-04-04 |
Family
ID=7805797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97941847A Expired - Lifetime EP0925472B1 (de) | 1996-09-16 | 1997-08-28 | Verfahren zur unterdrückung von verbrennungsschwingungen und einrichtung zur verbrennung von brennstoff mit luft |
Country Status (6)
Country | Link |
---|---|
US (1) | US6052986A (de) |
EP (1) | EP0925472B1 (de) |
JP (1) | JP4249263B2 (de) |
DE (1) | DE59703302D1 (de) |
RU (1) | RU2186298C2 (de) |
WO (1) | WO1998012478A1 (de) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69910106T2 (de) * | 1998-04-15 | 2004-06-17 | Mitsubishi Heavy Industries, Ltd. | Brennkammer |
SE9802707L (sv) * | 1998-08-11 | 2000-02-12 | Abb Ab | Brännkammaranordning och förfarande för att reducera inverkan av akustiska trycksvängningar i en brännkammaranordning |
DE19939235B4 (de) | 1999-08-18 | 2012-03-29 | Alstom | Verfahren zum Erzeugen von heissen Gasen in einer Verbrennungseinrichtung sowie Verbrennungseinrichtung zur Durchführung des Verfahrens |
DE19948674B4 (de) * | 1999-10-08 | 2012-04-12 | Alstom | Verbrennungseinrichtung, insbesondere für den Antrieb von Gasturbinen |
GB0019533D0 (en) | 2000-08-10 | 2000-09-27 | Rolls Royce Plc | A combustion chamber |
DE10164099A1 (de) * | 2001-12-24 | 2003-07-03 | Alstom Switzerland Ltd | Brenner mit gestufter Brennstoffeinspritzung |
US6931853B2 (en) * | 2002-11-19 | 2005-08-23 | Siemens Westinghouse Power Corporation | Gas turbine combustor having staged burners with dissimilar mixing passage geometries |
EP1493972A1 (de) * | 2003-07-04 | 2005-01-05 | Siemens Aktiengesellschaft | Brennereinheit für eine Gasturbine und Gasturbine |
US7703288B2 (en) * | 2005-09-30 | 2010-04-27 | Solar Turbines Inc. | Fuel nozzle having swirler-integrated radial fuel jet |
US20070074518A1 (en) * | 2005-09-30 | 2007-04-05 | Solar Turbines Incorporated | Turbine engine having acoustically tuned fuel nozzle |
US20070089427A1 (en) | 2005-10-24 | 2007-04-26 | Thomas Scarinci | Two-branch mixing passage and method to control combustor pulsations |
US8037688B2 (en) | 2006-09-26 | 2011-10-18 | United Technologies Corporation | Method for control of thermoacoustic instabilities in a combustor |
US8028512B2 (en) | 2007-11-28 | 2011-10-04 | Solar Turbines Inc. | Active combustion control for a turbine engine |
EP2119964B1 (de) | 2008-05-15 | 2018-10-31 | Ansaldo Energia IP UK Limited | Emissionsreduktionsverfahren für eine Brennkammer |
EP2119966A1 (de) | 2008-05-15 | 2009-11-18 | ALSTOM Technology Ltd | Brennkammer mit reduzierten Kohlenstoffmonoxidemissionen |
US20110048022A1 (en) * | 2009-08-29 | 2011-03-03 | General Electric Company | System and method for combustion dynamics control of gas turbine |
EP2423589A1 (de) * | 2010-08-27 | 2012-02-29 | Siemens Aktiengesellschaft | Brenneranordnung |
EP2796789B1 (de) * | 2013-04-26 | 2017-03-01 | General Electric Technology GmbH | Rohrbrennkammer für eine Rohr-Ring Anordnung in einer Gasturbine |
EP2848865A1 (de) * | 2013-09-12 | 2015-03-18 | Alstom Technology Ltd | Thermoakustisches Stabilisierungsverfahren |
RU2739877C1 (ru) * | 2020-07-22 | 2020-12-29 | Гришин Кирилл Вячеславович | Блок горелок печи для огневых испытаний |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2275738B (en) * | 1987-01-24 | 1995-01-25 | Topexpress Ltd | Reducing reheat buzz in a gas turbine aeroengine |
DE4040745A1 (de) * | 1990-01-02 | 1991-07-04 | Gen Electric | Aktive regelung von durch verbrennung hervorgerufene instabilitaeten |
JPH0579629A (ja) * | 1991-09-19 | 1993-03-30 | Hitachi Ltd | 燃焼器およびその運転方法 |
WO1993010401A1 (de) | 1991-11-15 | 1993-05-27 | Siemens Aktiengesellschaft | Einrichtung zur unterdrückung von verbrennungsschwingungen in einer brennkammer einer gasturbinenanlage |
DE4202588C1 (en) * | 1992-01-30 | 1993-07-15 | Buderus Heiztechnik Gmbh, 6330 Wetzlar, De | Multi-bar atmospheric gas burner - has adjacent bars with different outlets giving different combustion characteristics |
DE4336096B4 (de) | 1992-11-13 | 2004-07-08 | Alstom | Vorrichtung zur Reduktion von Schwingungen in Brennkammern |
DE4241729A1 (de) | 1992-12-10 | 1994-06-16 | Stephan Dipl Ing Gleis | Aktuator zum Aufprägen von Massenstrom- bzw. Druckschwankungen auf unter Druck stehende Flüssigkeitsströme |
DE4339094A1 (de) * | 1993-11-16 | 1995-05-18 | Abb Management Ag | Verfahren zur Dämpfung von thermoakustischen Schwingungen sowie Vorrichtung zur Durchführung des Verfahrens |
DE4411623A1 (de) * | 1994-04-02 | 1995-10-05 | Abb Management Ag | Vormischbrenner |
US5943866A (en) * | 1994-10-03 | 1999-08-31 | General Electric Company | Dynamically uncoupled low NOx combustor having multiple premixers with axial staging |
US5644918A (en) * | 1994-11-14 | 1997-07-08 | General Electric Company | Dynamics free low emissions gas turbine combustor |
US5809769A (en) * | 1996-11-06 | 1998-09-22 | The United States Of America As Represented By The United States Department Of Energy | Combustor oscillation attenuation via the control of fuel-supply line dynamics |
-
1997
- 1997-08-28 WO PCT/DE1997/001881 patent/WO1998012478A1/de active IP Right Grant
- 1997-08-28 EP EP97941847A patent/EP0925472B1/de not_active Expired - Lifetime
- 1997-08-28 JP JP51415398A patent/JP4249263B2/ja not_active Expired - Lifetime
- 1997-08-28 RU RU99107571/06A patent/RU2186298C2/ru active
- 1997-08-28 DE DE59703302T patent/DE59703302D1/de not_active Expired - Lifetime
-
1999
- 1999-03-16 US US09/272,748 patent/US6052986A/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9812478A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP4249263B2 (ja) | 2009-04-02 |
EP0925472B1 (de) | 2001-04-04 |
JP2001503843A (ja) | 2001-03-21 |
RU2186298C2 (ru) | 2002-07-27 |
US6052986A (en) | 2000-04-25 |
WO1998012478A1 (de) | 1998-03-26 |
DE59703302D1 (de) | 2001-05-10 |
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