EP0227637A2 - Brûleur à mazout - Google Patents

Brûleur à mazout Download PDF

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Publication number
EP0227637A2
EP0227637A2 EP86890355A EP86890355A EP0227637A2 EP 0227637 A2 EP0227637 A2 EP 0227637A2 EP 86890355 A EP86890355 A EP 86890355A EP 86890355 A EP86890355 A EP 86890355A EP 0227637 A2 EP0227637 A2 EP 0227637A2
Authority
EP
European Patent Office
Prior art keywords
mixing tube
section
exhaust gas
combustion air
oil burner
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
Application number
EP86890355A
Other languages
German (de)
English (en)
Other versions
EP0227637B1 (fr
EP0227637A3 (en
Inventor
Helmut Dr. Brücker
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.)
Dr Bruecker & Zeman & Mag Seyr Controlled Soft Combustion Gesellschaft Buergerlichen Rechts
Original Assignee
Dr Bruecker & Zeman & Mag Seyr Controlled Soft Combustion Gesellschaft Buergerlichen Rechts
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.)
Filing date
Publication date
Application filed by Dr Bruecker & Zeman & Mag Seyr Controlled Soft Combustion Gesellschaft Buergerlichen Rechts filed Critical Dr Bruecker & Zeman & Mag Seyr Controlled Soft Combustion Gesellschaft Buergerlichen Rechts
Publication of EP0227637A2 publication Critical patent/EP0227637A2/fr
Publication of EP0227637A3 publication Critical patent/EP0227637A3/de
Application granted granted Critical
Publication of EP0227637B1 publication Critical patent/EP0227637B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F23D11/40—Mixing tubes; Burner heads
    • F23D11/402—Mixing chambers downstream of the nozzle
    • 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 simultaneously or alternately of gaseous or liquid or pulverulent fuel
    • F23D17/002—Burners for combustion simultaneously or alternately of gaseous or liquid or pulverulent fuel gaseous or liquid fuel

Definitions

  • the invention relates to an oil burner with an oil atomization device, a combustion air supply coaxially surrounding this, which opens into an aperture, and with a mixing tube for fuel, combustion air and exhaust gas which is open at both ends and is arranged downstream of the aperture in a combustion chamber, wherein Exhaust gas originating directly from the combustion chamber is drawn back around the outside of the mixing tube and sucked into a first upstream section thereof.
  • Such oil burners in which hot exhaust gas taken directly from the combustion chamber are returned to the beginning of the combustion chamber or a pipe provided in it, are known as so-called blue burners or gasification oil burners (cf. DE-C-19 19 011, 27 00 671 , 28 43 002, 30 07 436, DE-A-28 12 960, EP-A-18 602, 48 438 and 109 585).
  • blue burners or gasification oil burners cf. DE-C-19 19 011, 27 00 671 , 28 43 002, 30 07 436, DE-A-28 12 960, EP-A-18 602, 48 438 and 109 585.
  • These known oil burners have the advantage of particularly soot-free and complete combustion with good thermal efficiency.
  • the known oil burners only achieve their good efficiency in a relatively narrow performance range.
  • the invention has for its object to improve an oil burner of the type mentioned while maintaining or expanding the advantages inherent in terms of reduced pollutant emissions and an increased power range in which the burner works optimally.
  • both the combustion air supply surrounding the oil atomizing device and the downstream second section of the mixing tube are connected to a line for supplying combustion air and a line for supplying cooled exhaust gas via a mixing device .
  • the two reaction zones can be regulated separately from one another with a view to complete combustion and the highest possible heat yield and to reduce the amount of pollutants in the exhaust gas. It has proven itself within the scope of the invention if a substoichiometric ratio between atmospheric oxygen and fuel is set in the first upstream section of the mixing tube and an essentially stoichiometric ratio between atmospheric oxygen and fuel in the second section of the mixing tube.
  • an oil atomization device 1 arranged in the longitudinal axis of the oil burner is surrounded by, for example, a cylindrical housing 22, the radially inner region 2 of which opens out in the region of an aperture 3.
  • a mixing tube 4 Downstream of the diaphragm opening 3 there is a mixing tube 4 which is arranged coaxially to the longitudinal axis of the burner and is open at both ends.
  • the mixing tube 4 has a first section 5 which has a larger diameter which is somewhat larger than the diaphragm opening 3.
  • the mixing tube 4 also has a second section 6 which has a larger diameter than the first section 5 of the same.
  • the extension 7 of the mixing tube 4 is designed as a step and lies approximately in the longitudinal center.
  • the mixing tube 4 is arranged in a combustion chamber 8, which connects to the housing 22.
  • the combustion chamber 8 comprises a first section 9, which extends approximately to the extension 7 of the mixing tube, and a second section 10, the opening 11 of which leads to a boiler (not shown).
  • the first section 9 of the combustion chamber 8 is subdivided by an installation which is coaxial with the burner axis into a radially outer jacket 12 and an annular space 13 which adjoins it radially inside and in which the first is located upstream the extension 7 located section 5 of the mixing tube 4.
  • the annular space 13 connects the second section 10 of the combustion chamber 8, with the opening of the mixing tube 4 provided in the area of the orifice 3.
  • the injector effect of the gas mixture emerging from the orifice 3 and flowing towards the mixing tube 4 results in the second section 10 of the combustion chamber 8 , hot exhaust gas through the annular space 13, ie past the outside of the mixing tube 4 and sucked into it.
  • the interior of the housing 22, in which the oil atomization device 1 is located, is acted upon both in its radially inner region 2 and in its radially outer region 16 with a mixture of (cooled) exhaust gas and combustion air removed from the boiler.
  • This application takes place via lines, not shown in FIG. 1 and indicated schematically in FIG. 2, which lead to the housing 22 via a mixing device MV.
  • a line 14 is also provided in the housing 22, via which, if required or in continuous operation, gaseous fuel can be supplied, which then exits through the radially oriented openings 15 in the aperture 3.
  • An ignition device 19 is also provided within the housing 22.
  • the radially outer region 16 of the interior of the housing 22 is connected to the outer jacket 12 of the first section 9 of the combustion chamber 8 via an outlet 17 which is designed as a quantity control device and has, for example, two perforated rings which can be rotated relative to one another.
  • the end of the radially outer jacket 12 of the combustion chamber 8 lying approximately in the region of the extension 7 of the mixing tube 4 is connected to the mixing tube 4 via lines 18 which are radially aligned with respect to the mixing tube 4. Due to the injector effect on the step-like extension tion 7 of the mixing tube 4, the mixture of cooled exhaust gas and combustion air in the mixing tube 4 is mixed well with the hot gas mixture emerging from the first section 5 of the mixing tube 4 in its second section 6.
  • a substoichiometric ratio between atmospheric oxygen and fuel ( ⁇ 1) is set in the first section 5 of the mixing tube 4.
  • the ratio in the first section of the mixing tube 4 is regulated via corresponding control valves in the combustion air and / or oil supply line, as will be explained with reference to FIG. 2.
  • the regulation of the ratio between atmospheric oxygen and fuel in the second section 6 of the mixing tube 4 takes place via the quantity control device assigned to the outlet 17.
  • thermal insulation layers 20 and 21 are provided in the area of the combustion chamber, which on the one hand separate the first section 9 of the combustion chamber 8 from the second section 10 thereof and on the other hand between the radially outer jacket 12 and the annular space 13 in the first section 9 of the Combustion chamber 8 are provided.
  • the combustion takes place predominantly outside the mixing tube 4 in the second section 10 of the combustion chamber 8.
  • partial load that is to say when the fuel supply is throttled, the combustion front can fall back into the vicinity of the first section 5 of the mixing tube 4, ie approximately in the region of the extension 7 of the mixing tube 4.
  • FIG. 2 A control for the oil burner according to the invention is explained below with reference to FIG. 2.
  • the gas, oil and air lines are drawn in solid lines and the electrical control lines are shown in broken lines.
  • the burner B, the boiler K and a process control unit P are also shown in FIG.
  • FIG. 2 also shows the line for supplying combustion air, which is combined in a controllable mixing valve MV with a line for returning exhaust gas removed from the boiler.
  • the line for exhaust gas taken from the boiler is a low-temperature exhaust gas recirculation (NT-ARF in Figure 2).
  • N-ARF low-temperature exhaust gas recirculation
  • the mixing valve MV the mixture of exhaust gas and combustion air flows to a blower G, from which it flows to the burner B, ie. H. whose housing 22 is supplied.
  • Heating oil is fed to the burner B (its oil atomization device 1) via a line via which a pump PU and a control valve are provided.
  • a drive unit M drives both the fan G and also the oil pump P.
  • HT- ARF high-temperature exhaust gas recirculation
  • the outputs of the process control unit P are each connected to the mixing valve MV (for the mixture of combustion air and exhaust gas) of the drive unit M, the control valve in the oil line and the control valve in the gas line.
  • the corresponding output of the process control unit P is connected to the ignition Z of the burner (ignition device 19 in FIG. 1).
  • the aperture 3 in the burner adjacent end of the mixing tube 4 and sucked into this.
  • the combustion air supply in the area 2 surrounding the oil atomization device 1 and a downstream, second section of the mixing tube 4 are acted upon by a mixture of cooled exhaust gas and combustion air removed from the boiler. Two reaction zones are therefore formed in the mixing tube.
  • the high temperature of the hot exhaust gas recirculated from the combustion chamber 8 leads to complete gasification of the oil supplied via the oil atomization device 1 and combustion, preferably with a lack of oxygen prevails (A4 1).
  • the complete combustion then takes place, a mixture of cooled exhaust gas and combustion air being fed in, so that the combustion temperature does not become too high because the reaction gases are cooled.
  • a particular advantage of the oil burner according to the invention is that the two reaction zones can be regulated separately from one another, so that complete combustion ensures the highest possible heat yield (greatest possible efficiency) and at the same time the proportion of pollutants, in particular also nitrogen oxides (NOX), is kept very small is.
  • pollutants in particular also nitrogen oxides (NOX)

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
EP19860890355 1985-12-23 1986-12-23 Brûleur à mazout Expired - Lifetime EP0227637B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT374485A AT387838B (de) 1985-12-23 1985-12-23 Oelbrenner
AT3744/85 1985-12-23

Publications (3)

Publication Number Publication Date
EP0227637A2 true EP0227637A2 (fr) 1987-07-01
EP0227637A3 EP0227637A3 (en) 1988-09-21
EP0227637B1 EP0227637B1 (fr) 1990-03-14

Family

ID=3554810

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860890355 Expired - Lifetime EP0227637B1 (fr) 1985-12-23 1986-12-23 Brûleur à mazout

Country Status (3)

Country Link
EP (1) EP0227637B1 (fr)
AT (1) AT387838B (fr)
DE (1) DE3669580D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0348646A3 (fr) * 1988-06-30 1991-07-03 Deutsche Babcock Energie- Und Umwelttechnik Aktiengesellschaft Brûleur
WO1995016883A1 (fr) * 1993-12-18 1995-06-22 Deutsche Forschungsanstalt für Luft- und Raumfahrt e.V. Bruleur a flamme bleue ajustable
EP0879992A1 (fr) * 1997-05-21 1998-11-25 ÖMV Aktiengesellschaft Brûleur, particulièrement pour des fuels
CN104807013A (zh) * 2015-05-08 2015-07-29 陈怀超 燃烧器喷头及具有它的燃烧器和水蒸汽裂解氢气燃烧方法
WO2021185903A1 (fr) * 2020-03-17 2021-09-23 Dometic Sweden Ab Appareil de chauffage, véhicule de loisir comprenant un appareil de chauffage et procédé de chauffage de fluides dans un véhicule de loisir

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010049513B4 (de) 2010-10-25 2012-06-06 Herbert Naumann Verbrennungskraftmaschine mit Arbeits- und Hilfszylindern

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540821A (en) * 1968-04-01 1970-11-17 Exxon Research Engineering Co Flue gas recirculation burner
US3868211A (en) * 1974-01-11 1975-02-25 Aqua Chem Inc Pollutant reduction with selective gas stack recirculation
US4160526A (en) * 1977-03-24 1979-07-10 Flynn Burner Corporation Liquid fuel atomizing nozzle
DE3035707A1 (de) * 1980-09-22 1982-04-08 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln Oel- und gasbrenner zum einbau in heizungs- und dampferzeugungskessel
DE3241730A1 (de) * 1982-11-11 1984-05-17 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5300 Bonn Vergasungsoelbrenner mit einer oelzerstaeubungsvorrichtung

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0348646A3 (fr) * 1988-06-30 1991-07-03 Deutsche Babcock Energie- Und Umwelttechnik Aktiengesellschaft Brûleur
WO1995016883A1 (fr) * 1993-12-18 1995-06-22 Deutsche Forschungsanstalt für Luft- und Raumfahrt e.V. Bruleur a flamme bleue ajustable
EP0879992A1 (fr) * 1997-05-21 1998-11-25 ÖMV Aktiengesellschaft Brûleur, particulièrement pour des fuels
AT407907B (de) * 1997-05-21 2001-07-25 Oemv Ag Brenner, insbesondere für heizöle
CN104807013A (zh) * 2015-05-08 2015-07-29 陈怀超 燃烧器喷头及具有它的燃烧器和水蒸汽裂解氢气燃烧方法
WO2021185903A1 (fr) * 2020-03-17 2021-09-23 Dometic Sweden Ab Appareil de chauffage, véhicule de loisir comprenant un appareil de chauffage et procédé de chauffage de fluides dans un véhicule de loisir
CN115280069A (zh) * 2020-03-17 2022-11-01 多美达瑞典有限公司 加热设备、具有加热设备的休闲车辆和用于加热休闲车辆中的流体的方法

Also Published As

Publication number Publication date
EP0227637B1 (fr) 1990-03-14
DE3669580D1 (de) 1990-04-19
EP0227637A3 (en) 1988-09-21
AT387838B (de) 1989-03-28
ATA374485A (de) 1988-08-15

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