EP0857915B1 - Verfahren und Brennkopf zur Verbrennung von flüssigen oder gasförmigen Brennstoffen - Google Patents
Verfahren und Brennkopf zur Verbrennung von flüssigen oder gasförmigen Brennstoffen Download PDFInfo
- Publication number
- EP0857915B1 EP0857915B1 EP97122516A EP97122516A EP0857915B1 EP 0857915 B1 EP0857915 B1 EP 0857915B1 EP 97122516 A EP97122516 A EP 97122516A EP 97122516 A EP97122516 A EP 97122516A EP 0857915 B1 EP0857915 B1 EP 0857915B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flame tube
- burner head
- burner
- flame
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
- F23D11/40—Mixing tubes or chambers; Burner heads
-
- 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
- F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
- F23C9/006—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber the recirculation taking place in the combustion chamber
-
- 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
- F23D17/002—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or liquid 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
- F23C2202/00—Fluegas recirculation
- F23C2202/30—Premixing fluegas with combustion air
Definitions
- the invention relates to a burner head on burners for gas and / or Oil firing systems can be used as well as a process for Combustion of liquid or gaseous fuels in the above Investments.
- the document EP 0 491 079 A1 has a burner head of a combustion system and describes a method for burning liquid fuels, the burner head having two separate air channels, furthermore providing an orifice on the atomizing nozzle and a premixing tube and a burnout tube.
- the publication teaches that the flame front only comes to ignition at the end of the premixing tube and thus within the burner head.
- the burnout tube has an extension compared to the premixing tube, at the transition of which an annular vortex, which is spatially limited, forms, which supports the flame stabilization.
- the mixture is also ignited directly behind the transition from the premixing tube to the burnout tube within the ring vortex and thus within the burner head.
- the object of the invention is to provide a method and a burner head which considerably reduces the formation of NO x during combustion and which enables the fuel to be burned at the lowest possible flame temperature and with low energy consumption.
- the process of burning gaseous and liquid fuels in combustion plants with one protruding into the combustion chamber of a boiler Burning head of a burner is characterized in that an air flow for the combustion is carried out by a swirl body, and that on one downstream section of the flame tube by means of guide devices and Breakthroughs on the flame tube create a negative pressure, and that the Exhaust gas from combustion is sucked in through the openings and with the combustion air is mixed, and that in the combustion chamber Exhaust gas with the one not yet ignited injected into the combustion chamber Fuel is mixed, and that a flame front at a distance in front the burning head is generated.
- Swirl body and at least one Atomizer nozzles for the supply of fuel are in a flame tube arranged, which as part of a burner head of a burner in the Combustion chamber of a boiler protrudes.
- an inner swirl flow is generated which, together with the swirl braids generated by the openings or guide devices and the axial air flow, leads to a return of exhaust gases from the combustion chamber of the boiler with low oxygen proportions and to an intensive mixing of not yet ignited fuel, exhaust gas and air.
- the formation of a flame front is not generated directly on or in the burner head, as is customary in conventional burners, but at a certain distance in front of the burner head, with the result that an intensive mixing of exhaust gas from the combustion chamber of the boiler with the one that has not yet ignited into the combustion chamber air-gas-fuel mixture entering the boiler is possible.
- This method advantageously brings about a reduction in the flame temperature and thus greatly reduces the NO x formation.
- the burner head consists of a flame tube, at least one Atomizer nozzle (1) and / or at least one gas nozzle (2), the Flame tube consists of an approximately cylindrical section (3), which then merges into a tapered section (8), at which downstream one another approximately cylindrical section is arranged, in which downstream section in the flame tube openings (5) and inwardly projecting guide devices (4) are arranged, and in that Flame tube at least one swirl body (6) is arranged.
- this burner head it is possible to generate a swirl flow in the burner head and to return exhaust gas to the burner head, so that better mixing of air, fuel and exhaust gas is possible. Furthermore, it becomes possible to create a stable flame front in front of the burning head.
- the distance between the flame front and the burner is characterized by a mixing zone consisting of exhaust gases, combustion air and fuels, which has significantly lower temperatures than the burning flame.
- the swirl body is axially displaceable. This optimizes the swirl flow.
- a preferred embodiment is also the arrangement of passages in the swirl body through which the air can be supplied axially, the Distance of the flame front from the burner head is positively influenced.
- the guide devices on the flame tube are preferably triangular in shape trained and in the direction of the mixing zone located in front of the combustion chamber aligned. This form of guidance system leads to an effective one and effective training of vertebrae, which the mixing of the Promote exhaust gases, combustion air and fuel. As special effective angle between the guide devices and the flame tube there is an angle between 30 and 40 degrees.
- Figure 1 shows a longitudinal section through a burning head
- Figure 2 the schematic formation of a flame by the invention Burning head caused.
- FIG 1 is a burning head for the combustion of gaseous and liquid Shown fuels.
- the burner head is on the burner different designs can be used. Such a burner can for example part of firing systems for hot water boilers, Steam generators, thermal oil heaters, hot gas generators or others Be a heat generator.
- the burner protruding into the combustion chamber 17 consists of a flame tube consisting of two cylindrical sections 3 and a tapered section 8. Just before or in section 8 is a slidable swirl body 6 in the axial direction arranged.
- the cylindrical one closest to the combustion chamber 17 Section of the flame tube 3 is in the interior of the flame tube 3 protruding - bodies or guide devices 4, which preferably as triangular wings are formed, as well as recesses or Openings 5 provided.
- the fuel is supplied by the line 13 and the atomizing nozzle 1 in liquid or through the Feed 12 and the gas nozzles 2 for gaseous fuels.
- An internal swirl flow is generated with the swirl body 6.
- the swirl body can have an optimized ratio of Axial air pulse to swirl pulse are generated.
- a negative pressure is generated which Intake of exhaust gases from the combustion chamber or combustion chamber 17 through the Openings 5 leads.
- the wings 4 in the air flow or air gas flow act as Vortex generators. This creates two downstream of each wing opposite pegs.
- the swirl body (s) 6 are displaceable on one or more Brackets 10 attached.
- FIG 2 the formation of the mixing zone 16 or the flame 18 is shown schematically.
- the burner head is guided through the wall of the combustion chamber by means of a burner muffle 9.
- the exhaust gas recirculation is brought about by the inflow of gas through the openings 5 on the one hand and by the suction of exhaust gas (represented by the arrows 14) into the non-burning evaporation or mixing zone 16.
- the formation of a flame front 15 takes place only at a certain distance from the Burning head in the combustion chamber 17.
- the hot flame 18 only forms from this flame front 15 and burns the exhaust gas, combustion air and fuel mixture. This is achieved through the combined effect of internal swirl impulse flow, axial air flow and the intense turbulence of the vortex braids.
- Local stabilization can be supported by a pilot burner or auxiliary burner 7 (not shown in FIG. 2).
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Of Fluid Fuel (AREA)
Description
Claims (9)
- Verfahren zum Verbrennen von flüssigen und/oder gasförmigen Brennstoffen mit einem in den Brennraum eines Kessels ragenden Brennkopf eines Brenners, dessen Flammrohr wenigstens eine darin angeordnete Düse für die Zufuhr von Brennstoff sowie mindestens einen Drallkörper aufweist, wobei ein Teil des Luftstromes für die Verbrennung durch den Drallkörper geführt wird, und wobei an dem stromabwärts gelegenen Abschnitt des Flammrohres durch Leiteinrichtungen und Durchbrechungen des Flammrohres ein Unterdruck erzeugt wird, wobei das Abgas aus der Verbrennung mit der Verbrennungsluft gemischt wird, und wobei das im Brennraum des Kessels befindliche Abgas mit dem in den Brennraum des Kessels eintretenden noch nicht entzündeten Brennstoff vermischt wird, und wobei eine Flammenfront in einem Abstand stromab vor dem Brennkopf erzeugt wird.
- Brennkopf zur Durchführung des Verfahrens nach Anspruch 1, bestehend aus einem Flammrohr, mindestens einer Zerstäuberdüse (1) und/oder mindestens einer Gasdüse (2), dadurch gekennzeichnet, daß das Flammrohr aus einem in etwa zylindrischen Abschnitt (3) besteht, der dann in einen sich verjüngenden Abschnitt (8) übergeht, in welchem stromab ein weiterer in etwa zylindrischer Abschnitt (3) angeordnet ist, wobei in dem stromab gelegenen Abschnitt des Flammrohres Durchbrechungen (5) und nach innen ragende Leiteinrichtungen (4) angeordnet sind, und daß in dem Flammrohr mindestens ein Drallkörper (6) angeordnet ist.
- Brennkopf nach Anspruch 2 dadurch gekennzeichnet, daß der Drallkörper axial verschiebbar ist.
- Brennkopf nach Anspruch 2 oder 3 dadurch gekennzeichnet, daß an dem Drallkörper Durchlässe angeordnet sind.
- Brennkopf nach Anspruch 2 bis 4 dadurch gekennzeichnet, daß die Leiteinrichtungen (4) dreieckig ausgebildet sind und zum Feuerraum ausgerichtet sind.
- Brennkopf nach einem der Ansprüche 2 bis 5 dadurch gekennzeichnet, daß der Winkel zwischen Leiteinrichtung (4) und Flammrohr 30 bis 40 Grad beträgt.
- Brennkopf nach einem der Ansprüche 2 bis 6 dadurch gekennzeichnet, daß die Öffnungen der Gasdüse (2) zu der Wandung des Flammrohres ausgerichtet ist.
- Brennkopf nach einem der Ansprüche 2 bis 7 dadurch gekennzeichnet, daß an dem Flammenrohr ein Zündbrenner angeordnet ist.
- Brennkopf nach einem der Ansprüche 2 bis 7 dadurch gekennzeichnet, daß zwecks örtlicher Stabilisierung der Flamme im Bereich des Flammrohres ein Pilot- oder Stützbrenner angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19704721A DE19704721B4 (de) | 1997-02-07 | 1997-02-07 | Verfahren und Brennkopf zur Verbrennung von flüssigen oder gasförmigen Brennstoffen |
DE19704721 | 1997-02-07 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0857915A2 EP0857915A2 (de) | 1998-08-12 |
EP0857915A3 EP0857915A3 (de) | 1999-06-16 |
EP0857915B1 true EP0857915B1 (de) | 2002-06-05 |
Family
ID=7819635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97122516A Expired - Lifetime EP0857915B1 (de) | 1997-02-07 | 1997-12-19 | Verfahren und Brennkopf zur Verbrennung von flüssigen oder gasförmigen Brennstoffen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0857915B1 (de) |
AT (1) | ATE218687T1 (de) |
DE (2) | DE19704721B4 (de) |
NO (1) | NO311855B1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7891971B2 (en) | 2005-08-16 | 2011-02-22 | Elco Burners Gmbh | Combustion head and method for combusting fuel |
DE102014105166B3 (de) * | 2014-03-12 | 2015-08-06 | Max Weishaupt Gmbh | Drallerzeuger für einen Brenner sowie damit versehene Mischeinrichtung und damit versehener Brenner |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10205428A1 (de) * | 2002-02-09 | 2003-09-11 | Alstom Switzerland Ltd | Vormischbrenner mit erhöhter Flammenstabilität |
DE102005049245A1 (de) * | 2005-10-14 | 2007-04-19 | BSH Bosch und Siemens Hausgeräte GmbH | Brenner |
DE102007009922A1 (de) | 2007-02-27 | 2008-08-28 | Ulrich Dreizler | Hohlflamme |
ATE533995T1 (de) | 2007-09-14 | 2011-12-15 | Elco Burners Gmbh | Brennerkopf und verfahren zur einstufigen verbrennung von brennstoff in einer vom brennerkopf beabstandeten verbrennungszone |
IT201600129822A1 (it) * | 2016-12-22 | 2018-06-22 | Ecoflam Bruciatori S P A | Testa di combustione a bassa emissione di ossidi di azoto con sovraboccaglio munito di mezzi di ricircolo |
DE102017114570B4 (de) | 2017-06-29 | 2021-02-04 | MIchael Karlowsky | Brennerkopf und Verbrennungsverfahren |
IT201900006424A1 (it) * | 2019-04-29 | 2020-10-29 | Stefano Pesce | Testa di combustione con ricircolazione interna e bruciatore comprendente la stessa |
CN217131272U (zh) * | 2020-11-25 | 2022-08-05 | 百得股份公司 | 减少排放的工业燃烧器和设备 |
IT202000028400A1 (it) * | 2020-11-25 | 2022-05-25 | Baltur S P A | Bruciatore e apparato industriale a ridotte emissioni |
IT202000028394A1 (it) * | 2020-11-25 | 2022-05-25 | Baltur S P A | Bruciatore e apparato industriale a ridotte emissioni |
IT202100023477A1 (it) | 2021-09-10 | 2023-03-10 | Shanghai Quanjie Envir Equip Co Ltd | Testa di combustione con ricircolazione interna e bruciatore comprendente la stessa |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3923238C2 (de) * | 1989-07-14 | 1994-08-04 | Electro Oil Gmbh | Einrichtung zum Rückführen von Verbrennungsprodukten |
DE3936461A1 (de) * | 1989-11-02 | 1991-05-08 | Koerting Ag | Mischeinrichtung fuer oelbrenner mit geblaese |
EP0491079B1 (de) * | 1990-12-19 | 1996-10-16 | Asea Brown Boveri Ag | Brennerkopf für die vormischartige Verbrennung eines flüssigen Brennstoffes in einer atmosphärischen Feuerungsanlage |
DE4229525A1 (de) * | 1992-09-07 | 1994-03-10 | Intercal Waermetechnik Gmbh | Mischeinrichtung für Ölzerstäubungsbrenner |
DE4237086A1 (de) * | 1992-11-03 | 1994-05-05 | Hans Georg Dipl Ing Zimmermann | Brenner für fließfähige Brennstoffe |
DE4324298C2 (de) * | 1993-07-20 | 1999-01-21 | Elco Kloeckner Heiztech Gmbh | Verfahren zur Verbrennung von flüssigen oder gasförmigen Brennstoffen in Feuerungsanlagen und Brenner zur Durchführung des Verfahrens |
-
1997
- 1997-02-07 DE DE19704721A patent/DE19704721B4/de not_active Expired - Lifetime
- 1997-12-19 DE DE59707408T patent/DE59707408D1/de not_active Expired - Lifetime
- 1997-12-19 EP EP97122516A patent/EP0857915B1/de not_active Expired - Lifetime
- 1997-12-19 AT AT97122516T patent/ATE218687T1/de active
-
1998
- 1998-01-20 NO NO19980247A patent/NO311855B1/no not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7891971B2 (en) | 2005-08-16 | 2011-02-22 | Elco Burners Gmbh | Combustion head and method for combusting fuel |
DE102014105166B3 (de) * | 2014-03-12 | 2015-08-06 | Max Weishaupt Gmbh | Drallerzeuger für einen Brenner sowie damit versehene Mischeinrichtung und damit versehener Brenner |
Also Published As
Publication number | Publication date |
---|---|
DE19704721A1 (de) | 1998-08-13 |
EP0857915A2 (de) | 1998-08-12 |
DE19704721B4 (de) | 2006-08-17 |
ATE218687T1 (de) | 2002-06-15 |
NO980247L (no) | 1998-08-10 |
EP0857915A3 (de) | 1999-06-16 |
NO980247D0 (no) | 1998-01-20 |
DE59707408D1 (de) | 2002-07-11 |
NO311855B1 (no) | 2002-02-04 |
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