WO2003014622A1 - Verfahren und vorrichtung zur beeinflussung von verbrennungsvorgängen bei brennstoffen - Google Patents
Verfahren und vorrichtung zur beeinflussung von verbrennungsvorgängen bei brennstoffen Download PDFInfo
- Publication number
- WO2003014622A1 WO2003014622A1 PCT/DE2002/002815 DE0202815W WO03014622A1 WO 2003014622 A1 WO2003014622 A1 WO 2003014622A1 DE 0202815 W DE0202815 W DE 0202815W WO 03014622 A1 WO03014622 A1 WO 03014622A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flame
- burner
- electrodes
- electrode
- 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.)
- Ceased
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
- 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
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/74—Preventing flame lift-off
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/16—Systems for controlling combustion using noise-sensitive detectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2210/00—Noise abatement
Definitions
- the invention relates to a method for influencing combustion processes in fuels, in which electrical means for guiding and / or changing a flame on a burner are used.
- the invention also relates to a device for carrying out the method using stabilizing and pollutant-reducing agents for influencing the flame during the combustion process.
- the electrodes which are required to generate the electric field or a discharge in the flame are arranged in such a way that the flame is either between the field-generating electrodes or from an electrode is enclosed.
- This electrode can be identical to the combustion chamber. Such an arrangement is illustrated in FIG. 1 of the description. In any case, it is possible to draw a straight connection line between electrodes of opposite polarity such that the connection line passes through the flame to be influenced.
- the direction of propagation of a flame 2 or the direction of flow of the exhaust gases is designated as the z-direction.
- Arrangements that correspond to the prior art are characterized without exception in that at least one electrode or one or more parts of such an electrode extend exclusively or predominantly over regions with z> 0.
- the combustion chamber that surrounds the flame can also be an electrode or part of one.
- the arrangement is designed such that partial areas of the flame can touch an electrode.
- a disadvantage of the above-described prior art is that the electric field generated by the electrodes penetrates a large area of the flame while the actual effect of the electric field occurs in the so-called flame front.
- the flame front is a narrow area compared to the dimensions of the flame between the cold fuel and the flame, in which the chemical reactions that lead to the formation of the flame take place. Since the flame has a non-negligible electrical conductivity due to the charge carriers it contains, the fact that the electrical field penetrates large areas of the flame means that an electrical current flows in the entire flame area enclosed by the electrodes, which increases the current Energy consumption causes without contributing to the desired effect within the flame front. This is particularly the case when electrically conductive areas of the flame or its surroundings are in direct contact with the electrodes.
- the flame is exposed to the action of an electrical field, the field being designed such that it only penetrates those areas of the flame in which it has a stabilizing and pollutant-reducing effect.
- electrodes are arranged for this purpose and a voltage is applied so that an electric field prefers those areas of the flame interspersed in which it exerts its stabilizing and pollutant-reducing effect ⁇ .
- This is realized by arranging all the field-generating electrodes in areas in which no ionization or no significant ionization caused by the combustion process occurs. This condition is fulfilled if the electrodes are arranged on the side of the burner opening facing away from the flame in such a way that there is no straight connecting line between electrodes of opposite polarity which passes through the flame.
- sensors are available, one of which measures the frequency of any combustion vibrations that are present and another measures the pollutant concentration in the exhaust gas.
- the sensors deliver the input signal to a control unit that controls the frequency, amplitude and phase of the voltage applied to the electrodes in such a way that the combustion vibrations and the pollutant concentration are minimized.
- FIGS. 2 and 3 show two different embodiments of the
- Figures 4 and 5 are a plan view and a sectional view of a further embodiment
- FIG. 6 shows an application of the invention in the combustion of solid materials.
- identical parts have the same reference symbols.
- the embodiments are partially described together.
- the burner is labeled 1 and the flame is labeled 2.
- the burner 1 has a gas supply 3.
- the flame is scaled along the Z coordinate.
- FIG. 1 has already been discussed at the outset with corresponding statements on the prior art, to which reference is made in detail.
- the flame 2 generated by the burner 1 for gaseous, liquid or transported in gases or liquids, powdered solid fuels is shown.
- the fuel is fed into a combustion chamber 4 through the burner 1 through the fuel inlet 3.
- the burner 1 can be made of electrically conductive or non-conductive material.
- the burner serves as an electrode
- an electrode 5 which in this example is annular and closely surrounds the burner 1, is attached.
- the electrodes are electrically connected to the power supply 7.
- a rod electrode 6a is arranged coaxially within the burner in such a way that it only projects into the region z ⁇ 0 to such an extent that the condition that there is no straight connecting line between the electrodes is met.
- An electrical field in the sense of the invention arises between the electrode 6a on the one hand and the burner 1 on the other hand, if this is made of electrically conductive material, or a further electrode 5, which in this special case is not burner assumed to be conductive.
- the stick electrode 6a located within the burner can be replaced by a tube or a nozzle or a plurality of tubes and nozzles which are caused by combustible or non-combustible gases or gas mixtures. Due to the small electrode spacing compared to the prior art according to FIG. 1, the generation of an electric field is already possible with correspondingly lower voltages.
- a combustion chamber 8 is indicated in FIG. 6, in which a pile 11 of a solid fuel, for example coal, burns on a grate 10 which is electrically insulated from the combustion chamber by non-conductive support elements 9.
- a ring electrode 12 is arranged in such a way that it protrudes into the area z ⁇ 0 at most so that the condition that there is no straight connecting line between the electrodes penetrating the flame remains fulfilled.
- FIGS. 4 and 5 show an exemplary embodiment in which a plurality of rod electrodes 13a, 13b, 13c, 13d are arranged radially with respect to a burner 1.
- the desired influencing of the combustion process by electric fields is achieved without the electric field penetrating large parts of the flame in which it does not have a stabilizing or pollutant-reducing effect. Touching the electrodes by electrically conductive rich in the flame is largely avoided. This significantly reduces the current induced by the electric field and reduces the need for electric power to the same extent. In addition, the likelihood of disruptive electrical breakdowns is greatly reduced. The comparatively small electrode spacing leads to a reduced voltage requirement compared to the prior art with the same electrical field strength.
- the arrangements according to the invention for influencing flames with the aid of electrical means are equally suitable for operation with direct voltage, pulsating or pulsed direct voltage and alternating voltage as well as direct voltage with superimposed alternating voltage.
- the polarity of the burner is preferably negative.
- Sensors can also be assigned to the system: a first sensor detects the frequency of any combustion vibrations that may be present. A second sensor measures the pollutant concentration in the exhaust gas flow of the flame. The sensors supply input signals for a control unit, not shown in detail, which controls the frequency, amplitude and phase of the voltage applied to the electrodes in such a way that the combustion vibrations and the pollutant concentration are minimal.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/485,401 US7137808B2 (en) | 2001-08-01 | 2002-07-31 | Method and device for influencing combustion processes involving combustibles |
| EP02760113A EP1412675B1 (de) | 2001-08-01 | 2002-07-31 | Verfahren und vorrichtung zur beeinflussung von verbrennungsvorgängen bei brennstoffen |
| DE50208080T DE50208080D1 (de) | 2001-08-01 | 2002-07-31 | Verfahren und vorrichtung zur beeinflussung von verbrennungsvorgängen bei brennstoffen |
| US11/516,528 US20070026354A1 (en) | 2001-08-01 | 2006-09-07 | Method and device for influencing combustion processes involving combustibles |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10137683A DE10137683C2 (de) | 2001-08-01 | 2001-08-01 | Verfahren und Vorrichtung zur Beeinflussung von Verbrennungsvorgängen bei Brennstoffen |
| DE10137683.9 | 2001-08-01 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/516,528 Continuation US20070026354A1 (en) | 2001-08-01 | 2006-09-07 | Method and device for influencing combustion processes involving combustibles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003014622A1 true WO2003014622A1 (de) | 2003-02-20 |
Family
ID=7693988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2002/002815 Ceased WO2003014622A1 (de) | 2001-08-01 | 2002-07-31 | Verfahren und vorrichtung zur beeinflussung von verbrennungsvorgängen bei brennstoffen |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US7137808B2 (de) |
| EP (1) | EP1412675B1 (de) |
| DE (2) | DE10137683C2 (de) |
| WO (1) | WO2003014622A1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009089830A3 (de) * | 2008-01-18 | 2011-12-29 | Innovent E.V. Technologieentwicklung | Vorrichtung und verfahren zum aufrechterhalten und betrieb einer flamme |
| 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. |
| EP2856032A4 (de) * | 2012-05-31 | 2016-02-10 | Clearsign Comb Corp | Nox-armer brenner mit hoher flamme |
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| DE10137683C2 (de) * | 2001-08-01 | 2003-05-28 | Siemens Ag | Verfahren und Vorrichtung zur Beeinflussung von Verbrennungsvorgängen bei Brennstoffen |
| ATE335167T1 (de) * | 2002-03-22 | 2006-08-15 | Pyroplasma Kg | Brennstoffverbrennungsvorrichtung |
| DE102004046814B3 (de) * | 2004-09-27 | 2006-03-09 | Siemens Ag | Verfahren und Vorrichtung zur Beeinflussung von Verbrennungsvorgängen, insbesondere zum Betrieb einer Gasturbine |
| DE102004061300B3 (de) * | 2004-12-20 | 2006-07-13 | Siemens Ag | Verfahren und Vorrichtung zur Beeinflussung von Verbrennungsvorgängen |
| US8082725B2 (en) * | 2007-04-12 | 2011-12-27 | General Electric Company | Electro-dynamic swirler, combustion apparatus and methods using the same |
| DE102007036219A1 (de) * | 2007-08-02 | 2009-02-05 | Limited Liability Research-And-Production Company Ukrtranskom | Verfahren zum Verstärken der Verbrennung eines Festbrennstoffes |
| US20090165436A1 (en) * | 2007-12-28 | 2009-07-02 | General Electric Company | Premixed, preswirled plasma-assisted pilot |
| WO2009110015A1 (en) * | 2008-03-07 | 2009-09-11 | Bertelli & Partners S.R.L. | Improved method and device to detect the flame in a burner operating on a solid, liquid or gaseous combustible |
| DE102008028423B4 (de) * | 2008-06-17 | 2012-02-09 | Viessmann Werke Gmbh & Co Kg | Verfahren und Vorrichtung zur Bestimmung von mindestens einer Einflussgröße eines Verbrennungsprozesses |
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|---|---|---|---|---|
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| DE10137683C2 (de) * | 2001-08-01 | 2003-05-28 | Siemens Ag | Verfahren und Vorrichtung zur Beeinflussung von Verbrennungsvorgängen bei Brennstoffen |
-
2001
- 2001-08-01 DE DE10137683A patent/DE10137683C2/de not_active Expired - Fee Related
-
2002
- 2002-07-31 DE DE50208080T patent/DE50208080D1/de not_active Expired - Fee Related
- 2002-07-31 EP EP02760113A patent/EP1412675B1/de not_active Expired - Lifetime
- 2002-07-31 US US10/485,401 patent/US7137808B2/en not_active Expired - Fee Related
- 2002-07-31 WO PCT/DE2002/002815 patent/WO2003014622A1/de not_active Ceased
-
2006
- 2006-09-07 US US11/516,528 patent/US20070026354A1/en not_active Abandoned
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| US4111636A (en) | 1976-12-03 | 1978-09-05 | Lawrence P. Weinberger | Method and apparatus for reducing pollutant emissions while increasing efficiency of combustion |
| JPS6136607A (ja) * | 1984-07-30 | 1986-02-21 | Mitsubishi Heavy Ind Ltd | 燃焼方法 |
| JPH03164602A (ja) * | 1989-11-20 | 1991-07-16 | Noritz Corp | バーナ |
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| PATENT ABSTRACTS OF JAPAN vol. 015, no. 400 (M - 1167) 11 October 1991 (1991-10-11) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009089830A3 (de) * | 2008-01-18 | 2011-12-29 | Innovent E.V. Technologieentwicklung | Vorrichtung und verfahren zum aufrechterhalten und betrieb einer flamme |
| EP2856032A4 (de) * | 2012-05-31 | 2016-02-10 | Clearsign Comb Corp | Nox-armer brenner mit hoher flamme |
| 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. |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070026354A1 (en) | 2007-02-01 |
| DE10137683C2 (de) | 2003-05-28 |
| DE50208080D1 (de) | 2006-10-19 |
| US20040185397A1 (en) | 2004-09-23 |
| DE10137683A1 (de) | 2003-02-20 |
| US7137808B2 (en) | 2006-11-21 |
| EP1412675A1 (de) | 2004-04-28 |
| EP1412675B1 (de) | 2006-09-06 |
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