EP0279913B1 - Brenner zum Verbrennen von flüssigen oder gasförmigen Brennstoffen - Google Patents

Brenner zum Verbrennen von flüssigen oder gasförmigen Brennstoffen Download PDF

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Publication number
EP0279913B1
EP0279913B1 EP87116550A EP87116550A EP0279913B1 EP 0279913 B1 EP0279913 B1 EP 0279913B1 EP 87116550 A EP87116550 A EP 87116550A EP 87116550 A EP87116550 A EP 87116550A EP 0279913 B1 EP0279913 B1 EP 0279913B1
Authority
EP
European Patent Office
Prior art keywords
chamber
air
burner
nozzles
fuel
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
Application number
EP87116550A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0279913A3 (en
EP0279913A2 (de
Inventor
Hermann-Josef Janssen
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.)
Ingenieurbureau Sonvico AG
Original Assignee
Ingenieurbureau Sonvico 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.)
Filing date
Publication date
Application filed by Ingenieurbureau Sonvico AG filed Critical Ingenieurbureau Sonvico AG
Priority to AT87116550T priority Critical patent/ATE61466T1/de
Publication of EP0279913A2 publication Critical patent/EP0279913A2/de
Publication of EP0279913A3 publication Critical patent/EP0279913A3/de
Application granted granted Critical
Publication of EP0279913B1 publication Critical patent/EP0279913B1/de
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
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • 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
    • F23C9/08—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for reducing temperature in combustion chamber, e.g. for protecting walls of 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

Definitions

  • the invention relates to a burner for burning liquid or gaseous fuels according to the preamble of claim 1.
  • Such a burner is known with regard to the division of the combustion air into primary air, secondary air and tertiary air and supply of the tertiary air via a separate air box (US Pat. No. 4,347,052). This reduces the formation of nitrogen oxides during combustion. It is also known that in burners with a central oil lance and three-part air supply (DE-OS 33 27 597) flue gas is supplied to the beginning of the flame between the primary air and secondary air supply. In the known, equipped with a central fuel lance and operated with heavy oil burners can operate in narrow burner spaces, for. B. in flame tube three-pass boilers difficulties arise in the way that low-pollutant combustion can be associated with an impermissibly high solid emissions.
  • the invention has for its object to design the generic burner in such a way that the formation of nitrogen oxides can be considerably reduced, especially when burning heavy heating oil, while maintaining the specified solid ejection value.
  • the fireproof-lined chamber now has the effect that the oxidation process is largely completed, so that the intermediate products and incomplete combustion products, such as carbon monoxide, soot and hydrogen, which are initially formed are burned at the end of the chamber and that flue gas can be cooled in the heat exchanger immediately following the chamber .
  • the retaining ring at the end of the chamber swirls the combustion products and accelerates the complete burnout of the fuel.
  • the burner according to the invention is distinguished by the fact that the prescribed limit values for the emission of gaseous pollutants such as nitrogen oxide and carbon monoxide as well as of solid pollutants are observed equally.
  • the burner contains several fuel lances, namely a central lance 1 and several, in the present case three outer satellite lances 2, which surround the central lance 1 on a pitch circle.
  • the central lance 1 and the satellite lances 2 open into a fireproof-lined chamber 4 provided with an end wall 3.
  • the fuel lances can be designed as oil lances or as gas lances for the combustion of liquid or gaseous fuel. All fuel lances can be moved axially.
  • This burner is designed for the low-pollutant combustion of particularly heavy heating oil in narrow fireboxes.
  • the internal mixer is used as the atomizer lance for the liquid fuel. Compressed air can be used as an atomizing agent or steam can be used.
  • the quantity distribution of the fuel is provided so that each fuel lance is evenly d. in the case of a central lance 1 and n satellite lances 2, 100 / n + 1% of the total fuel quantity is applied.
  • the fuel injection with the central lance 1 takes place via uniformly arranged nozzle bores, the spray angle being adapted to the design of the chamber 4.
  • the fuel outflow from the satellite lances 2 is provided in one direction via a plurality of nozzle bores arranged one behind the other.
  • the spray jet from the satellite lances 2 can be selected such that it is directed into the center or tangentially to any imaginary circle within the chamber 4.
  • the injection position can be shifted axially.
  • the fuel quantity is divided between the central lance 1 and the satellite lances 2 in this way so that coke formation is avoided and the gasification of the fuel is accelerated.
  • the variable and graduated fuel injection keeps the local flame temperatures and the oxygen concentration as low as possible, which counteracts the formation of thermal nitrogen oxide and fuel nitrogen oxide.
  • the central lance 1 is enclosed by a protective tube 5, which in turn is surrounded by two ring channels 6, 7, which are connected to a first air chamber 8.
  • the combustion air entering through the first air chamber 8 via an air inlet connection 9 is divided by the ring channels 6, 7 into an internal primary air flow and an external secondary air flow.
  • Air guiding bodies 10 are arranged in the entrance of the ring channels 6, 7, which are axially displaceable via a rear linkage and via which the pressure and speed relationships of the air flows can be mutually coordinated.
  • a control flap 11 is arranged in the entrance of the air box 8, by means of which the amount of combustion air supplied to the ring channels 6, 7 is regulated.
  • a swirler 12 which forces a swirl on the primary air flow. Additional swirl generators can be provided at the inlet end of the ring channel 7.
  • the outer ring duct 7 for guiding the secondary air is surrounded by a flue gas ring duct 13 which is connected via a flue gas chamber 14 to a separate flue gas inlet connection 15.
  • the flue gas inlet connection 15 is supplied with flue gas, which is drawn in from the boiler connected to the burner by means of a fan.
  • the flue gas enters the chamber 4 via the flue gas ring channel 13 and envelops the fuel jet of the central lance 1 and the primary air jet and the secondary air jet over a certain path length.
  • a second air chamber 16 which is used to supply a further partial flow of the combustion air as tertiary air, is connected to the air inlet connection 9, separated by the flue gas chamber 14.
  • a regulating flap 17 for regulating the amount of air entering is arranged in the entrance of the second air chamber 16.
  • a first set of air nozzles 18 Arranged in the end wall 3 of the chamber 4 is a first set of air nozzles 18 which open into the second air chamber 16 and protrude into the chamber 4 with the end that is angled or straight to the longitudinal axis of the chamber 4.
  • the outlet openings of these air nozzles 18 lie on a pitch circle, the diameter of which is smaller than the pitch circle of the satellite lance 2 and larger than the diameter of the outlet opening of the flue gas ring duct 13.
  • the outlet openings of the air nozzles 18 also lie in the flow direction of the flue gas in front of the nozzle bores of the satellite lances 2.
  • the second air chamber 16 is connected via a series of through bores 19 to an annular chamber 20 which surrounds the chamber 4. At a distance from the outlet openings of the air nozzles 18 and the nozzle bores of the satellite lances 2 are guided obliquely through the side wall of the chamber 4 further nozzles 21 which open into the annular chamber 20 and protrude into the chamber 4.
  • the outlet openings of these nozzles 21 lie on a pitch circle, the diameter of which is larger than the diameter of the pitch circle on which the satellite lances 2 are arranged.
  • the combustion air supplied to the second air chamber 16 is supplied to the chamber 4 as tertiary air I through the air nozzles 18 and at a distance therefrom as tertiary air II through the further nozzles 21.
  • the direction of the air jets emerging from the air nozzles 18 and the further nozzles 21 is indicated in the drawing by dash-dotted lines. It can be seen from FIGS. 1 and 2 that the tertiary air jets are directed at a spatial angle against the longitudinal axis of the chamber 4.
  • the flame tube 23, cooled by a water jacket 22, of a flame tube boiler is connected directly to the outlet end of the chamber 4.
  • the combustion products emerging from the chamber 4 are thus immediately cooled.
  • a retaining ring 24 composed of stone segments is provided.
  • the retaining ring 24 creates a constriction zone, whereby a further swirling of the combustion products is achieved and the complete burnout of the fuel is thereby accelerated.
  • the retaining ring 24 can be arranged at different points in the longitudinal direction of the chamber 4 to influence the combustion process. In the event of a shift towards the burner lances, the further nozzles 21 for blowing in the tertiary air II also lie behind the retaining ring 24 in the direction of flow of the flue gas.

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)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)
EP87116550A 1987-02-26 1987-11-10 Brenner zum Verbrennen von flüssigen oder gasförmigen Brennstoffen Expired - Lifetime EP0279913B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87116550T ATE61466T1 (de) 1987-02-26 1987-11-10 Brenner zum verbrennen von fluessigen oder gasfoermigen brennstoffen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3706234 1987-02-26
DE19873706234 DE3706234A1 (de) 1987-02-26 1987-02-26 Brenner zum verbrennen von fluessigen oder gasfoermigen brennstoffen

Publications (3)

Publication Number Publication Date
EP0279913A2 EP0279913A2 (de) 1988-08-31
EP0279913A3 EP0279913A3 (en) 1989-05-03
EP0279913B1 true EP0279913B1 (de) 1991-03-06

Family

ID=6321850

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87116550A Expired - Lifetime EP0279913B1 (de) 1987-02-26 1987-11-10 Brenner zum Verbrennen von flüssigen oder gasförmigen Brennstoffen

Country Status (7)

Country Link
US (1) US4815966A (zh)
EP (1) EP0279913B1 (zh)
JP (1) JPS63226515A (zh)
AT (1) ATE61466T1 (zh)
DE (2) DE3706234A1 (zh)
DK (1) DK165138C (zh)
ES (1) ES2020544B3 (zh)

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5193995A (en) * 1987-12-21 1993-03-16 Asea Brown Boveri Ltd. Apparatus for premixing-type combustion of liquid fuel
CH679692A5 (zh) * 1989-04-24 1992-03-31 Asea Brown Boveri
US5092760A (en) * 1990-08-01 1992-03-03 Maxon Corporation Oxygen-fuel burner assembly and operation
US5275554A (en) * 1990-08-31 1994-01-04 Power-Flame, Inc. Combustion system with low NOx adapter assembly
US5334012A (en) * 1990-12-27 1994-08-02 Astec Industries, Inc. Combustion chamber having reduced NOx emissions
IT1255613B (it) * 1992-09-24 1995-11-09 Eniricerche Spa Sistema di combustione a basse emissioni inquinanti per turbine a gas
US5441404A (en) * 1993-01-29 1995-08-15 Gordan-Piatt Energy Group, Inc. Burner assembly for reducing nitrogen oxides during combustion of gaseous fuels
US5460512A (en) * 1993-05-27 1995-10-24 Coen Company, Inc. Vibration-resistant low NOx burner
US5542839A (en) * 1994-01-31 1996-08-06 Gas Research Institute Temperature controlled low emissions burner
DE4420140C2 (de) * 1994-06-09 2001-03-01 Jasper Ges Fuer Energiewirtsch Brenner für eine Öl- oder Gasfeuerung
US5562438A (en) * 1995-06-22 1996-10-08 Burnham Properties Corporation Flue gas recirculation burner providing low Nox emissions
FR2771798B1 (fr) * 1997-12-02 1999-12-31 Air Liquide Bruleur oxy-combustible
FR2772887B1 (fr) 1997-12-24 2000-03-17 Pillard Chauffage Bruleur a faible emission d'oxyde d'azote avec circuit de gaz recycle
US6007325A (en) * 1998-02-09 1999-12-28 Gas Research Institute Ultra low emissions burner
US5984665A (en) * 1998-02-09 1999-11-16 Gas Research Institute Low emissions surface combustion pilot and flame holder
US5993193A (en) * 1998-02-09 1999-11-30 Gas Research, Inc. Variable heat flux low emissions burner
US5944503A (en) * 1998-05-20 1999-08-31 Selas Corporation Of America Low NOx floor burner, and heating method
AU4694099A (en) * 1998-06-17 2000-01-05 John Zink Company Llc Low no chi and low co burner and method for operating same
US6102687A (en) * 1998-09-28 2000-08-15 U.S. Department Of Energy Simplified configuration for the combustor of an oil burner using a low pressure, high flow air-atomizing nozzle
AT408796B (de) * 1999-04-29 2002-03-25 Dumag Ohg Brenner
FR2794221B1 (fr) * 1999-05-31 2001-08-24 Pillard Chauffage PERFECTIONNEMENTS AUX BRULEURS A COMBUSTIBLE LIQUIDE A BASSE EMISSION DE NOx ET DE POUSSIERES, ET AUX ATOMISEURS
DE60025933T2 (de) * 1999-11-02 2006-11-09 Ebara Corp. Brennvorrichtung zur behandlung von abgas
US6488496B1 (en) * 2001-09-06 2002-12-03 Hauck Manufacturing Co. Compact combination burner with adjustable spin section
US6893251B2 (en) 2002-03-16 2005-05-17 Exxon Mobil Chemical Patents Inc. Burner design for reduced NOx emissions
WO2003081132A2 (en) * 2002-03-16 2003-10-02 Exxonmobil Chemical Patents Inc. Improved burner with low nox emissions
US6887068B2 (en) 2002-03-16 2005-05-03 Exxonmobil Chemical Patents Inc. Centering plate for burner
US6846175B2 (en) * 2002-03-16 2005-01-25 Exxonmobil Chemical Patents Inc. Burner employing flue-gas recirculation system
US6986658B2 (en) 2002-03-16 2006-01-17 Exxonmobil Chemical Patents, Inc. Burner employing steam injection
US6866502B2 (en) 2002-03-16 2005-03-15 Exxonmobil Chemical Patents Inc. Burner system employing flue gas recirculation
US6869277B2 (en) * 2002-03-16 2005-03-22 Exxonmobil Chemical Patents Inc. Burner employing cooled flue gas recirculation
US6890172B2 (en) 2002-03-16 2005-05-10 Exxonmobil Chemical Patents Inc. Burner with flue gas recirculation
US6893252B2 (en) 2002-03-16 2005-05-17 Exxonmobil Chemical Patents Inc. Fuel spud for high temperature burners
US7322818B2 (en) * 2002-03-16 2008-01-29 Exxonmobil Chemical Patents Inc. Method for adjusting pre-mix burners to reduce NOx emissions
US20030175635A1 (en) * 2002-03-16 2003-09-18 George Stephens Burner employing flue-gas recirculation system with enlarged circulation duct
WO2003081129A1 (en) 2002-03-16 2003-10-02 Exxonmobil Chemical Patents Inc. Burner tip and seal for optimizing burner performance
US6881053B2 (en) 2002-03-16 2005-04-19 Exxonmobil Chemical Patents Inc. Burner with high capacity venturi
ATE484713T1 (de) * 2002-03-16 2010-10-15 Exxonmobil Chem Patents Inc Lösbarer zündelementdeckel für einen brenner
US20030175634A1 (en) * 2002-03-16 2003-09-18 George Stephens Burner with high flow area tip
US7163392B2 (en) * 2003-09-05 2007-01-16 Feese James J Three stage low NOx burner and method
SE0501840L (sv) * 2005-08-19 2007-02-20 Aga Ab Förfarande jämte för övervakning av en brännare
US7901204B2 (en) * 2006-01-24 2011-03-08 Exxonmobil Chemical Patents Inc. Dual fuel gas-liquid burner
US8075305B2 (en) * 2006-01-24 2011-12-13 Exxonmobil Chemical Patents Inc. Dual fuel gas-liquid burner
US7909601B2 (en) * 2006-01-24 2011-03-22 Exxonmobil Chemical Patents Inc. Dual fuel gas-liquid burner
KR100969857B1 (ko) * 2008-11-21 2010-07-13 한국생산기술연구원 연료 연소장치
US9089811B2 (en) 2012-04-30 2015-07-28 Highvac Corp. Coaxial / coaxial treatment module
US9909755B2 (en) * 2013-03-15 2018-03-06 Fives North American Combustion, Inc. Low NOx combustion method and apparatus
CN103185342B (zh) * 2013-04-03 2015-09-30 大唐韩城第二发电有限责任公司 一种油气复合燃烧器
AU2017244041B2 (en) 2016-03-30 2022-12-01 Marine Canada Acquisition Inc. Vehicle heater and controls therefor
CN109855096B (zh) * 2019-03-30 2024-06-07 华侨大学 一种多级旋流燃烧器
RU207013U1 (ru) * 2021-05-11 2021-10-06 Федеральное государственное автономное образовательное учреждение высшего образования «Дальневосточный федеральный университет» (ДВФУ) Циклонный предтопок
US12025311B2 (en) * 2021-08-24 2024-07-02 Solar Turbines Incorporated Micromix fuel injection air nozzles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868211A (en) * 1974-01-11 1975-02-25 Aqua Chem Inc Pollutant reduction with selective gas stack recirculation
US4023921A (en) * 1975-11-24 1977-05-17 Electric Power Research Institute Oil burner for NOx emission control
US4347052A (en) * 1978-06-19 1982-08-31 John Zink Company Low NOX burner
DE3048201A1 (de) * 1980-12-20 1982-07-08 L. & C. Steinmüller GmbH, 5270 Gummersbach "brenner zur verminderung der no(pfeil abwaerts)x(pfeil abwaerts)-emission"
JPS57204706A (en) * 1981-06-09 1982-12-15 Babcock Hitachi Kk Combusting method of preventing corrosion and blockade of air preheater
DE3327597A1 (de) * 1983-07-30 1985-02-07 Deutsche Babcock Werke AG, 4200 Oberhausen Verfahren und brenner zum verbrennen von fluessigen oder gasfoermigen brennstoffen unter verminderter bildung von nox

Also Published As

Publication number Publication date
US4815966A (en) 1989-03-28
DK165138B (da) 1992-10-12
EP0279913A3 (en) 1989-05-03
DE3706234C2 (zh) 1989-06-01
ATE61466T1 (de) 1991-03-15
DK165138C (da) 1993-02-22
EP0279913A2 (de) 1988-08-31
DE3768486D1 (de) 1991-04-11
JPS63226515A (ja) 1988-09-21
DE3706234A1 (de) 1988-09-08
DK78088D0 (da) 1988-02-16
ES2020544B3 (es) 1991-08-16
DK78088A (da) 1988-08-27

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