EP1794497A1 - Verfahren und vorrichtung zur beeinflussung von verbrennungsvorg[ngen, insbesondere beim betrieb einer gasturbine - Google Patents
Verfahren und vorrichtung zur beeinflussung von verbrennungsvorg[ngen, insbesondere beim betrieb einer gasturbineInfo
- Publication number
- EP1794497A1 EP1794497A1 EP05797010A EP05797010A EP1794497A1 EP 1794497 A1 EP1794497 A1 EP 1794497A1 EP 05797010 A EP05797010 A EP 05797010A EP 05797010 A EP05797010 A EP 05797010A EP 1794497 A1 EP1794497 A1 EP 1794497A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flame
- control
- induction coil
- switch
- feedback
- 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
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C99/00—Subject-matter not provided for in other groups of this subclass
- F23C99/001—Applying electric means or magnetism to combustion
-
- 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
- F23C2900/99005—Combustion techniques using plasma gas
-
- 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
- F23R2900/00013—Reducing thermo-acoustic vibrations by active means
Definitions
- the invention relates to a method for influencing combustion processes, in particular during operation of a gas turbine, wherein pilot flames are used to maintain the combustion over a large parameter range, the flame control of which takes place via electromagnetic fields.
- the invention relates to a Vorrich ⁇ device for performing the method.
- the pilot flames required in gas turbines to maintain combustion over a wide range of parameters produce a not insignificant proportion of the pollutants, in particular the nitrogen oxides (NOx).
- the pilot flames of a gas turbine have a narrow working range and are - u.a. because of the large inertia of a gas flow-related control - only partially suitable for controlling the combustion process in the combustion chamber.
- An extension of the working range of the pilot flame while reducing the production of pollutants and egg ne very fast controllability of the combustion process can deliver many benefits to discharge efficiency and pollutant ⁇ .
- an inductive, pulsed energy coupling ⁇ takes place via an induction coil surrounding the flame with the flame as a secondary winding of a Impulstransforma- tors.
- Such arrangements are known for the generation of, for example, pinch processes.
- the effect is preferably applied in the outer region of the flame, so that these cold flame regions are preferably given additional heating by the inductively conducted pulsed energy supply. This can be made uniform section of the temperature profile in the flame for a short time over the cross ⁇ .
- the invention provides a rapidly adjustable Energykopp ⁇ is development in flames reached with the help of an almost languid ⁇ ness loose control of the combustion process in the Pilotflam- me is allowed up to high thermal efficiencies in the MW range and above.
- the equalization of the flame temperature leads to a reduction in the production of pollutants such as e.g. of nitrogen oxides.
- the invention can control the combustion process also in the combustion chamber itself without contact; this can be done through a single large, or several separate, geographically distributed smaller induction systems so that even a targeted spatially resolved Be ⁇ influencing the combustion process is possible.
- This can be used to selectively reduce temperature peaks and thus reduce NOx emissions, to optimize the combustion process (degree of efficiency) and to prevent acoustic resonances.
- Flat coils are a particularly favorable solution here.
- FIG. 2 shows the control of the main flame in the combustion chamber of a gas turbine with the aid of distributed induction coils for spatially controllable coupling of high-frequency energy
- Figure 3 rator a structure according to Figure 1 with an RF genes ⁇ and
- FIG. 4 shows a structure corresponding to FIG. 2 with two HF generators.
- E ind 0.5 * L * I 2 (Eq.l) in the form of a very high-frequency high-voltage pulse in the stray capacitance CS of the system reloaded;
- the electrical system consists of coil inductance L as a primary side of an air transformer and the associated low Streukapazi- did CS, as well as the plasma as a (single-turn) the secondary side of the transformer now represents a high impedance arrangement. This measure considerably improved Impe ⁇ danzanpassung at the load the energy source and thus a better power input into the flame plasma achieved than via a direct inductive coupling of the Einzelimpul ⁇ ses.
- Pulse repetition frequency and pulse amplitude can be controlled via a Rege ⁇ lung system via corresponding sensors (temperature Tem ⁇ ; acoustic oscillations; exhaust gas composition; etc.) characterizing the current operating state of the gas turbine and is controlled using a specific additional energy supply to the pilot ⁇ or main flame.
- sensors temperature Tem ⁇ ; acoustic oscillations; exhaust gas composition; etc.
- FIG. 1 a device for Flammensteue ⁇ tion.
- 10 mean a ceramic tube, on which an induction coil 11 with inductance L is arranged.
- 12 is a burner and 13, the associated pilot ⁇ flame called.
- the capacitor 14 realizes a stray capacitance CS and the condenser 15 realizes a pulse capacitor C P.
- the capacitors are connected to a high voltage source U H and connected to ground on the other side.
- the switch 16 is driven by a control unit 30 rule. As a ⁇ transitions for the control-regulation unit used sensors 31, the 32nd
- 20 means a ceramic combustion chamber wall and 23 the main flame in the turbine.
- 21 and 21 ⁇ induction coils are designated, which are formed in Figure 2 as a flat coil.
- Each of the flat coils has a control device, which corresponds in principle to the control device according to FIG. This means in detail that in turn capacitors 14, 15 are present, which realize a stray capacitance CS and a pulse capacitance Cp.
- the circuit is connected to a voltage source U Hochspan ⁇ H and there are switches 16, 16 'exist, the sponding by a control / regulating unit 30 with entspre ⁇ sensors 31 are connected 32nd
- the individual control devices can be coupled together.
- the distributed induction coils according to FIG. 2 a spatially controllable coupling of high-frequency energy directly into the plasma of the main flame is possible.
- the single ones Induction coils 21, 22 are advantageously designed as Flachspu ⁇ sources. In FIG. 2, they are arranged outside the ceramic combustion chamber wall. For electrically conductive combustion chamber wall ⁇ they can be angeord- net within the combustion chamber.
- FIGS. 3 and 4 the controllable switch 16 or 16 'is replaced by one or two power HF generators 26 and 26'.
- the frequency of the coupled power can be specified with the RF generators.
- the arrangement of the induction coils and the control / regulating unit with the zugehö ⁇ cal sensors according to Figures 1 and 2 is constructed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Plasma Technology (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004046814A DE102004046814B3 (de) | 2004-09-27 | 2004-09-27 | Verfahren und Vorrichtung zur Beeinflussung von Verbrennungsvorgängen, insbesondere zum Betrieb einer Gasturbine |
PCT/EP2005/054738 WO2006034983A1 (de) | 2004-09-27 | 2005-09-22 | Verfahren und vorrichtung zur beeinflussung von verbrennungsvorgängen, insbesondere beim betrieb einer gasturbine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1794497A1 true EP1794497A1 (de) | 2007-06-13 |
EP1794497B1 EP1794497B1 (de) | 2010-11-03 |
Family
ID=35539308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05797010A Not-in-force EP1794497B1 (de) | 2004-09-27 | 2005-09-22 | Verfahren und vorrichtung zur beeinflussung von verbrennungsvorg[ngen, insbesondere beim betrieb einer gasturbine |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070261383A1 (de) |
EP (1) | EP1794497B1 (de) |
DE (2) | DE102004046814B3 (de) |
WO (1) | WO2006034983A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007025551A1 (de) | 2007-05-31 | 2008-12-11 | Siemens Ag | Verfahren und Vorrichtung zur Verbrennung von kohlenwasserstoffhaltigen Brennstoffen |
GB201012626D0 (en) * | 2010-07-28 | 2010-09-08 | Rolls Royce Plc | Controllable flameholder |
GB201012627D0 (en) | 2010-07-28 | 2010-09-08 | Rolls Royce Plc | Combustion controller |
ITMI20112018A1 (it) * | 2011-11-07 | 2013-05-08 | Ansaldo Energia Spa | Impianto a turbina a gas per la produzione di energia elettrica |
DE102012204022A1 (de) * | 2012-03-14 | 2013-09-19 | Siemens Aktiengesellschaft | Gasturbine und Verfahren zu deren Betrieb |
US20130291552A1 (en) * | 2012-05-03 | 2013-11-07 | United Technologies Corporation | Electrical control of combustion |
ITRM20130157A1 (it) * | 2013-03-15 | 2014-09-16 | Agenzia Naz Per Le Nuove Tecn Ologie L Ener | Dispositivo per il controllo dinamico di turbine a gas e soppressione dei fenomeni di humming. |
WO2015017084A1 (en) * | 2013-07-30 | 2015-02-05 | Clearsign Combustion Corporation | Combustor having a nonmetallic body with external electrodes |
US20160138799A1 (en) * | 2014-11-13 | 2016-05-19 | Clearsign Combustion Corporation | Burner or boiler electrical discharge control |
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-
2004
- 2004-09-27 DE DE102004046814A patent/DE102004046814B3/de not_active Expired - Fee Related
-
2005
- 2005-09-22 WO PCT/EP2005/054738 patent/WO2006034983A1/de active Application Filing
- 2005-09-22 US US11/663,779 patent/US20070261383A1/en not_active Abandoned
- 2005-09-22 EP EP05797010A patent/EP1794497B1/de not_active Not-in-force
- 2005-09-22 DE DE502005010492T patent/DE502005010492D1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2006034983A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE502005010492D1 (de) | 2010-12-16 |
US20070261383A1 (en) | 2007-11-15 |
DE102004046814B3 (de) | 2006-03-09 |
EP1794497B1 (de) | 2010-11-03 |
WO2006034983A1 (de) | 2006-04-06 |
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