EP0410135A1 - Brûleur pour la combustion stoechiométrique de combustible liquide ou gazeux - Google Patents

Brûleur pour la combustion stoechiométrique de combustible liquide ou gazeux Download PDF

Info

Publication number: EP0410135A1
Authority: EP; European Patent Office
Prior art keywords: burner; combustion chamber; burner tube; constriction; tube
Prior art date: 1989-07-13
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

Application number

EP90111657A

Other languages

German (de)

English (en)

Other versions

EP0410135B1 (fr

Inventor

Dieter Bombis

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

ELCO Oel- und Gasbrennerwerk AG

Original Assignee

ELCO Oel- und Gasbrennerwerk AG

Priority date (The priority date 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 date listed.)

1989-07-13

Filing date

1990-06-20

Publication date

1991-01-30

1990-06-20 Application filed by ELCO Oel- und Gasbrennerwerk AG filed Critical ELCO Oel- und Gasbrennerwerk AG

1991-01-30 Publication of EP0410135A1 publication Critical patent/EP0410135A1/fr

1994-12-07 Application granted granted Critical

1994-12-07 Publication of EP0410135B1 publication Critical patent/EP0410135B1/fr

2010-06-20 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

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
- 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
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details
- F23D11/40—Mixing tubes; Burner heads
- F23D11/404—Flame tubes

Definitions

the invention relates to a burner for the stoichiometric combustion of liquid or gaseous fuels, consisting of an atomizer nozzle which can be supplied with the fuel via a fuel line, an air supply line surrounding the atomizer nozzle for the combustion air to be supplied by a fan or the like a combustion chamber formed into a boiler chamber and provided with a diaphragm or a baffle plate.
a burner of this type is known under the name "DFVLR combustion system blue burner".
a large number of bores are machined into the burner tube in this embodiment, and a mixing tube is also inserted into the burner tube, by means of which the exhaust gas is mixed with the combustion air. This intensification of the exhaust gas recirculation in the combustion chamber allows reduce nitrogen monoxide emissions during the operating phase, but the construction effort is considerable.
the object of the invention is therefore to design a burner of the aforementioned type in such a way that optimal gasification and extremely good combustion of the air-fuel mixture, especially also in the start-up phase, is made possible in the combustion chamber and thus that the proportion of nitrogen oxides can be reduced to a considerable extent in the exhaust gases during the entire operating life of the burner. Furthermore, the burner should work extremely quietly and the flame should always be stable and burn out blue at a low temperature level. The construction effort required for this should be kept low, and burners should also be retrofittable in order to improve the combustion in existing plants and thus to ensure a nitrogen oxide reduction.
this is achieved in that for the introduction of exhaust gas from the boiler space into the combustion chamber, the burner tube in the area facing the panel with several, preferably evenly over the circumference distributed recesses and extending in the longitudinal direction of the burner tube is provided.
the cutouts should be incorporated into the burner tube in an area which is equal to or less than the aperture of the orifice by connecting the orifice to the burner tube and the aperture twice the diameter is determined, in contrast, in the case of a burner with a diaphragm arranged perpendicular to its longitudinal axis, the cutouts should be incorporated into the burner tube in an area which is at a distance of approximately two thirds to approximately up to twice the diameter of the diaphragm opening extends.
the recesses are to be formed advantageously in all longitudinal slots; these can be arranged parallel to the longitudinal axis of the burner tube or inclined to it.
cutouts incorporated into the burner tube each have a length which corresponds approximately to the diameter of the aperture.
the burner tube in the front area of the combustion chamber can furthermore be provided with a constriction which preferably extends all the way around it.
the constriction should be arranged at a distance in front of the combustion chamber opening which corresponds to approximately 1/3 the length of the combustion chamber and can be formed in a simple manner by a bead rolled into the burner tube or by an insert piece arranged therein.
the constriction has a triangular cross section in the region projecting into the combustion chamber, one or both transitions between the constriction and the burner tube are concave, the tip of which is convexly curved and the height of the constriction corresponds at least approximately to the wall thickness of the burner tube .
the diameter of the burner tube and the diaphragm opening in the burner designed according to the proposal should be such that their cross-sectional areas behave approximately as 10: 1.
a burner according to the invention is formed by incorporating into the burner tube in the area facing the diaphragm several cutouts extending in its longitudinal direction, exhaust gas can flow into the combustion chamber to a sufficient extent and well distributed, so that a blue-burning soot-free flame is included extremely low proportion of nitrogen oxides in the exhaust gases to achieve. Because of the injector effect, the exhaust gas is sucked into the combustion chamber and mixed into the flame root, thus ensuring a stoichiometric combustion of the fuel expelled from the atomizer nozzle at a low temperature level, since the burner flame is cooled by the exhaust gas.
the flame formation in the combustion chamber is not impaired by internals. Rather, the constriction stabilizes the burner flame and further improves the combustion values. Any components are therefore not to be heated in order to achieve optimal combustion, so that a stable blue-burning flame and thus low-pollutant combustion is already present in the starting phase. And since no fittings and holders are washed around, the burner designed according to the invention operates extremely quietly, the operating noise being able to be further reduced by the constriction provided in the combustion tube.
the burner shown in Figures 1 to 4 and designated 1, 1 'or 1 ⁇ is used for stoichiometric combustion of liquid or gaseous media and consists essentially of a burner tube 11 and an atomizer nozzle 12, which is provided with a filter 17 Fuel line 15 by means of a pump 16 used in this, the fuel is supplied from a storage container 14.
the atomizing nozzle 12, which is assigned an ignition electrode 18 or a spark plug, is surrounded by an air supply line 13, in which the air is supplied by a fan 19 supplied combustion air is supplied.
the air supply line 13 is formed here by an extension of the burner tube 11, which is fastened to the wall 4 of a heating boiler 2 by means of a flange 5, so that the burner tube 11 protrudes into the boiler chamber 3 thereof.
a combustion chamber 20 is created in the burner tube 11, in which the fuel introduced is burned and the flame F emerges from the combustion chamber opening 23 thereof.
the exhaust gas R is sucked into the combustion chamber 20 in each operating phase of the burner 1 due to the combustion air flowing in through the aperture 22 or 22 'and the injected fuel, whereby to a certain extent automatically depending on the flow rates of the combustion air and / or the fuel is regulated the amount of exhaust gas sucked in.
the cutouts 31 are arranged in an area b which begins at the connection point of the orifice 21 to the burner tube 11 and ends at a distance a from the orifice opening 22 , which is equal to or smaller than their double diameter d.
the sum of the cross-sectional areas of the cutouts 31 arranged uniformly distributed over the circumference of the burner tube 11 corresponds approximately to the cross-sectional area of the aperture 22.
the recesses 31 'inclined in the axial direction A of the burner tube 11' are incorporated into an area b, which is at a distance a 1 of approximately 1/3 of the diameter d of the aperture 22 'and a distance a 2 extends from about twice the diameter d of the aperture 22 'to this. From these parameters, the length and width of the recesses 31 and 31 'can be easily determined. And since the cross-sectional areas of the burner tube 11 having a diameter D and the aperture 22 or 22 'behave approximately as 10: 1, the addition of the exhaust gas R into the root of the flame F ensures a soot-free burnout.
a constriction 41 can also be incorporated in the burner tube 11 in the front region of the combustion chamber 20, which can be formed by a rolled-in bead 42.
the constriction 41 should be arranged at a distance s in front of the combustion chamber opening 23 which corresponds to approximately 1/3 of the length 1 of the combustion chamber 20.
the constriction 41 should be in the area projecting into the combustion chamber 20 have a triangular cross section, and the transitions 43 between the constriction 41 and the burner tube 11 should be concave, the tip 44, however, should be convexly curved.
the circumferential constriction 41 acts as a brake, in particular in the start-up phase of the burner 1, since the flame is deflected by this into the interior of the combustion chamber 20 and thus a vortex is created, by which a reduction zone is formed in the combustion chamber 20.
the vibrations of the flame are broken by this vortex, so that the operating noises of the burner 1 are reduced to a considerable extent, especially during a cold start.

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Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)

EP90111657A 1989-07-13 1990-06-20 Brûleur pour la combustion stoechiométrique de combustible liquide ou gazeux Expired - Lifetime EP0410135B1 (fr)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
DE3923159		1989-07-13
DE3923159		1989-07-13
DE4009222A DE4009222A1 (de)	1989-07-13	1990-03-22	Brenner zur stoechiometrischen verbrennung von fluessigen oder gasfoermigen brennstoffen
DE4009222		1990-03-22

Publications (2)

Publication Number	Publication Date
EP0410135A1 true EP0410135A1 (fr)	1991-01-30
EP0410135B1 EP0410135B1 (fr)	1994-12-07

Family

ID=25882986

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP90111657A Expired - Lifetime EP0410135B1 (fr)	1989-07-13	1990-06-20	Brûleur pour la combustion stoechiométrique de combustible liquide ou gazeux

Country Status (3)

Country	Link
EP (1)	EP0410135B1 (fr)
AT (1)	ATE115259T1 (fr)
DE (3)	DE4009222A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0538761A3 (en) *	1991-10-25	1993-06-30	R.B.L. Riello Bruciatori Legnago Spa	Improved burner for the combustion of fluid fuels
EP0867658A1 (fr) *	1997-03-24	1998-09-30	VTH AG Verfahrenstechnik für Heizung	Procédé et dispositif pour la combustion d'un combustible liquide
WO1998043019A1 (fr) *	1997-03-24	1998-10-01	Vth Verfahrenstechnik Für Heizung Ag	Chaudiere de chauffage equipee d'un bruleur
AT404399B (de) *	1995-08-26	1998-11-25	Man B & W Diesel Ag	Verfahren und brenner zum verbrennen insbesondere flüssiger brennstoffe
EP0947769A3 (fr) *	1998-04-02	2000-01-26	VIESSMANN WERKE GmbH & CO.	Brûleur à flamme bleue
EP2287530A3 (fr) *	2009-08-07	2014-07-02	Dome Holding GmbH	Unité de mélange pour un brûleur

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
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
DE4430888A1 (de)	1993-12-18	1995-07-06	Deutsche Forsch Luft Raumfahrt	Einstellbarer Blaubrenner
US5957682A (en) *	1996-09-04	1999-09-28	Gordon-Piatt Energy Group, Inc.	Low NOx burner assembly
CN116481022B (zh) *	2023-04-28	2024-08-09	哈尔滨红光锅炉总厂有限责任公司	一种循环流化床锅炉的水冷式油点火装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2700671A1 (de) *	1977-01-08	1978-07-20	Deutsche Forsch Luft Raumfahrt	Blaubrennender oelbrenner
DE2821932A1 (de) *	1978-05-19	1979-11-22	Karl Bodemer	Mischeinrichtung zur verbrennung von fluessigen kohlenwasserstoffen, insbesondere heizoel und dieseloel
DE2843002A1 (de) *	1978-10-03	1980-04-10	Maschf Augsburg Nuernberg Ag	Heizoelbrenner
DE3241730A1 (de) *	1982-11-11	1984-05-17	Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5300 Bonn	Vergasungsoelbrenner mit einer oelzerstaeubungsvorrichtung
DE3506640A1 (de) *	1985-02-26	1986-08-28	Martin 6349 Mittenaar Gabriel	Mischkopf fuer einen vergasungs-oelbrenner
DD244613A1 (de) *	1985-12-19	1987-04-08	Oelfeuerungsbau Veb	Einrichtung zum verbrennen von generatorgas oder heizoel

1990
- 1990-03-22 DE DE4009222A patent/DE4009222A1/de not_active Withdrawn
- 1990-03-22 DE DE9007612U patent/DE9007612U1/de not_active Expired - Lifetime
- 1990-06-20 EP EP90111657A patent/EP0410135B1/fr not_active Expired - Lifetime
- 1990-06-20 DE DE59007912T patent/DE59007912D1/de not_active Expired - Fee Related
- 1990-06-20 AT AT90111657T patent/ATE115259T1/de not_active IP Right Cessation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2700671A1 (de) *	1977-01-08	1978-07-20	Deutsche Forsch Luft Raumfahrt	Blaubrennender oelbrenner
DE2821932A1 (de) *	1978-05-19	1979-11-22	Karl Bodemer	Mischeinrichtung zur verbrennung von fluessigen kohlenwasserstoffen, insbesondere heizoel und dieseloel
DE2843002A1 (de) *	1978-10-03	1980-04-10	Maschf Augsburg Nuernberg Ag	Heizoelbrenner
DE3241730A1 (de) *	1982-11-11	1984-05-17	Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5300 Bonn	Vergasungsoelbrenner mit einer oelzerstaeubungsvorrichtung
DE3506640A1 (de) *	1985-02-26	1986-08-28	Martin 6349 Mittenaar Gabriel	Mischkopf fuer einen vergasungs-oelbrenner
DD244613A1 (de) *	1985-12-19	1987-04-08	Oelfeuerungsbau Veb	Einrichtung zum verbrennen von generatorgas oder heizoel

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0538761A3 (en) *	1991-10-25	1993-06-30	R.B.L. Riello Bruciatori Legnago Spa	Improved burner for the combustion of fluid fuels
AT404399B (de) *	1995-08-26	1998-11-25	Man B & W Diesel Ag	Verfahren und brenner zum verbrennen insbesondere flüssiger brennstoffe
EP0867658A1 (fr) *	1997-03-24	1998-09-30	VTH AG Verfahrenstechnik für Heizung	Procédé et dispositif pour la combustion d'un combustible liquide
WO1998043019A1 (fr) *	1997-03-24	1998-10-01	Vth Verfahrenstechnik Für Heizung Ag	Chaudiere de chauffage equipee d'un bruleur
US6579086B2 (en)	1997-03-24	2003-06-17	R.W. Beckett Corporation	Process and fuel burner with exhaust-gas recirculation
EP0947769A3 (fr) *	1998-04-02	2000-01-26	VIESSMANN WERKE GmbH & CO.	Brûleur à flamme bleue
EP2287530A3 (fr) *	2009-08-07	2014-07-02	Dome Holding GmbH	Unité de mélange pour un brûleur

Also Published As

Publication number	Publication date
ATE115259T1 (de)	1994-12-15
DE59007912D1 (de)	1995-01-19
DE4009222A1 (de)	1991-01-24
EP0410135B1 (fr)	1994-12-07
DE9007612U1 (de)	1993-05-06

Publication	Publication Date	Title
EP0393484A1 (fr)	1990-10-24	Agencement pour chambre de combustion
DE2460740A1 (de)	1976-07-01	Brennkammer fuer gasturbinentriebwerke
DE3035707A1 (de)	1982-04-08	Oel- und gasbrenner zum einbau in heizungs- und dampferzeugungskessel
EP0410135B1 (fr)	1994-12-07	Brûleur pour la combustion stoechiométrique de combustible liquide ou gazeux
DE3604314C2 (fr)	1991-05-16
EP0816759B1 (fr)	2003-01-08	Brûleur à prémélange et procédé de mise en oeuvre du brûleur
EP1030106B1 (fr)	2004-11-24	Bruleur à flamme bleue optimisant la combustion
EP0683883B1 (fr)	2001-02-28	Bruleur a flamme bleue optimisant la combustion
EP1754937A2 (fr)	2007-02-21	Tête de brûleur et procédé pour brûler du combustible
EP0430011B1 (fr)	1996-02-14	Brûleur pour la combustion de combustibles liquides ou gazeux
DE4008692C2 (de)	1999-04-01	Mischeinrichtung für Ölgebläsebrenner
DE69818909T2 (de)	2004-08-19	Brennerkopf für Gasbrenner
DE4009221C2 (de)	1998-01-29	Brenner zur stöchiometrischen Verbrennung eines flüssigen oder gasförmigen Brennstoffes
DE3919797C2 (fr)	1991-07-11
EP0809070B1 (fr)	2001-08-29	Brûleur avec recirculation des gaz d'échappement
DE4244400A1 (de)	1994-06-30	Brenner zur Heißgaserzeugung
DE4330082C2 (de)	1998-06-04	Brenner zur stöchiometrischen Verbrennung von flüssigem oder gasförmigem Brennstoff
EP0864812A2 (fr)	1998-09-16	Dispositif de mélange pour brûleur à gaz et à huile
DE19855289A1 (de)	1999-05-27	Brenner
EP0378517B1 (fr)	1994-09-07	Brûleur pour la combustion des combustibles gazeux et/ou des combustibles liquides en état gazeux
AT404399B (de)	1998-11-25	Verfahren und brenner zum verbrennen insbesondere flüssiger brennstoffe
DE4229525A1 (de)	1994-03-10	Mischeinrichtung für Ölzerstäubungsbrenner
EP0114610A1 (fr)	1984-08-01	Brûleur à combustion stoechiométrique de combustible liquide ou gazeux
DE2835335A1 (de)	1979-12-20	Brenner fuer durchlauferhitzer
EP0947769A2 (fr)	1999-10-06	Brûleur à flamme bleue

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