EP3124861A1 - Brennkammer mit erzwungener umkehrung - Google Patents

Brennkammer mit erzwungener umkehrung Download PDF

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Publication number
EP3124861A1
EP3124861A1 EP14795537.1A EP14795537A EP3124861A1 EP 3124861 A1 EP3124861 A1 EP 3124861A1 EP 14795537 A EP14795537 A EP 14795537A EP 3124861 A1 EP3124861 A1 EP 3124861A1
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EP
European Patent Office
Prior art keywords
combustion chamber
air
flame
fuel
outlet
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.)
Withdrawn
Application number
EP14795537.1A
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English (en)
French (fr)
Other versions
EP3124861A4 (de
Inventor
Yanxin Li
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP3124861A1 publication Critical patent/EP3124861A1/de
Publication of EP3124861A4 publication Critical patent/EP3124861A4/de
Withdrawn legal-status Critical Current

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    • 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
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F23D14/24—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other at least one of the fluids being submitted to a swirling motion
    • 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
    • F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
    • F23C7/004—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes
    • 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
    • F23C7/02—Disposition of air supply not passing through burner
    • 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
    • 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 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/03006—Reverse flow combustion chambers
    • 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 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber

Definitions

  • the present invention relates to technical field of burners, in particular, relates to a forced reversal combustion chamber.
  • Combustion chambers of conventional burners for fuel oil, gas and powdered coal all have forward air distribution (moving direction of air is same with that of the flame); as shown in Fig. 1 , when secondary air flowing through outer side of swirl vanes (also known as, flame plates, or diffusion vanes) at high speed, partial negative pressure area is formed in front of flame plates that flame is passively reversed and igniting continually ejected fuel.
  • the method usually has about 20% of primary air that 80% remainder air of secondary air mixes with fuel at outlet of the combustion chamber and fiercely blazes.
  • Conventional burners as shown in Fig. 1 , comprises combustion chamber (e.g. combustion chamber 3), wherein side wall of the combustion chamber is arcing structure projecting outward, one end of the combustion chamber is flame outlet for emitting flame, a fuel nozzle (e.g. fuel nozzle 2) is provided opposite the flame outlet on center of inner end of the combustion chamber, a pair of swirl vanes (e.g. swirl vanes 5) are disposed at opposite sides of the fuel nozzle inside the combustion chamber, a horizontally set air delivery channel is disposed on the other end of the combustion chamber, an air blower (e.g. air blower 1) for delivering secondary air (e.g. secondary air 4) into the combustion chamber is provided inside the air delivery channel, air outlet of which is opposite periphery of fuel nozzle.
  • combustion chamber e.g. combustion chamber 3
  • side wall of the combustion chamber is arcing structure projecting outward
  • one end of the combustion chamber is flame outlet for emitting flame
  • a fuel nozzle e.g. fuel nozzle 2
  • the object of the invention is to provide a forced reversal combustion chamber, to achieve advantages of good flame stabilization, high burn-off rate of fuel and good environmental protection property.
  • a forced reversal combustion chamber comprises a combustion chamber body, configured as a hollow cavity which is similar to a arcing shape formed by folding fingers towards palm and symmetrically configured around center of palm; and a plurality of swirl vanes for delivering combustion air into the combustion chamber, correspondingly provided on interior side of the end of the combustion chamber; said plurality of swirl vanes comprises a plurality of secondary air swirl vanes (or air vents) for radially delivering secondary air into the combustion chamber, provided on interior side of flame outlet of the combustion chamber.
  • said plurality of swirl vanes comprises a plurality of tertiary air swirl vanes for delivering tertiary air to the combustion chamber, provided on interior side of the end of the combustion chamber.
  • a fuel nozzle is provided in the middle of the combustion chamber, which inserts into interior wall of the combustion chamber and outlet of which extends through interior wall of the combustion chamber; outlet end after mixing the air and fuel is flame outlet of combustion chamber.
  • an air delivery channel is provided on the side of the hollow arcing cavity of the combustion chamber away from the flame outlet; an air blower for delivering combustion air into combustion chamber is provided inside said air delivery channel, air outlet of which is opposite cavity wall of hollow arcing cavity of the combustion chamber.
  • Forced reversal combustion chamber in embodiments of the invention comprises a combustion chamber body, configured as a hollow cavity which is similar to a arcing shape formed by folding fingers towards palm and symmetrically configured around center of palm; a plurality of swirl vanes for delivering secondary air into the combustion chamber, correspondingly provided on interior side of the end of the combustion chamber; a fuel nozzle is provided in the middle of the combustion chamber, which inserts into interior wall of the combustion chamber and outlet of which extends through interior wall of the combustion chamber; outlet end after mixing the air and fuel is flame outlet of the combustion chamber.
  • Fig. 2 it provides a forced reversal combustion chamber.
  • Forced reversal combustion chamber of the embodiment comprises a combustion chamber body (e.g. combustion chamber 3), configured as a hollow cavity which is similar to a arcing shape formed by folding fingers towards palm and symmetrically configured around center of palm; a plurality of swirl vanes for delivering combustion air into the combustion chamber, correspondingly provided on interior side of the end of the combustion chamber, which comprise a plurality of secondary air swirl vanes (e.g. secondary air swirl vanes 4) for delivering secondary air into the combustion chamber provided on interior side of flame outlet of the combustion chamber, and comprise a plurality of tertiary air swirl vanes (e.g.
  • tertiary air swirl vanes 5) for delivering tertiary air into the combustion chamber, provided on interior side of flame outlet of the combustion chamber; a fuel nozzle (e.g. fuel nozzle 2) is provided in the middle of the combustion chamber, which inserts into interior wall of the combustion chamber and outlet of which extends through interior wall of the combustion chamber; common outlet end of combustion chamber fuel nozzle is flame (e.g. flame 6) outlet.
  • a fuel nozzle e.g. fuel nozzle 2
  • common outlet end of combustion chamber fuel nozzle is flame (e.g. flame 6) outlet.
  • an air delivery channel is provided on the side of the hollow arcing cavity of the combustion chamber away from the flame; an air blower (e.g. air blower 1) for delivering combustion air into the combustion chamber is provided inside the air delivery channel, air outlet of which is opposite cavity wall of hollow arcing cavity of the combustion chamber.
  • an air blower e.g. air blower 1
  • the forced reversal combustion chamber of foresaid embodiment uses air distribution of secondary air forced reversal, cancels primary air swirl vanes in the back of conventional combustion chamber, and adds swirl vanes of secondary air and tertiary air on forepart of the combustion chamber.
  • proportion of primary air for providing oxygen in flame center in the center is very small; proportion of radial forced reversal secondary air is bigger, it turns back when reaching inner end of the combustion chamber to form inner spin flow that flows to flame outlet; remainder air tangentially rotatably emits when flowing through tertiary air swirl vanes, and sufficiently mixes with the inner spin flow to ensure burning out of the fuel.
  • the air distribution of the forced reversal combustion chamber could at least achieve following beneficial effects:

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Supply (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
EP14795537.1A 2014-03-28 2014-04-04 Brennkammer mit erzwungener umkehrung Withdrawn EP3124861A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410121259.1A CN103851623B (zh) 2014-03-28 2014-03-28 一种强制回焰的燃烧室
PCT/CN2014/000371 WO2015143582A1 (zh) 2014-03-28 2014-04-04 一种强制回焰的燃烧室

Publications (2)

Publication Number Publication Date
EP3124861A1 true EP3124861A1 (de) 2017-02-01
EP3124861A4 EP3124861A4 (de) 2017-11-22

Family

ID=50859595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14795537.1A Withdrawn EP3124861A4 (de) 2014-03-28 2014-04-04 Brennkammer mit erzwungener umkehrung

Country Status (6)

Country Link
US (1) US20160265766A1 (de)
EP (1) EP3124861A4 (de)
CN (1) CN103851623B (de)
IN (1) IN2014DN09354A (de)
RU (1) RU2612694C2 (de)
WO (1) WO2015143582A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112361331A (zh) * 2019-10-11 2021-02-12 中国石油大学(华东) 一种具有高引射烟气的高原型燃油燃烧器及设计方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105910102B (zh) * 2016-05-27 2018-04-10 中国科学技术大学 一种火旋风式燃烧器
IT201600129779A1 (it) * 2016-12-22 2018-06-22 Ecoflam Bruciatori S P A Testa di combustione a bassa emissione di ossidi di azoto con mezzi di guida dell’aria
IT201600129792A1 (it) * 2016-12-22 2018-06-22 Ecoflam Bruciatori S P A Testa di combustione a bassa emissione di ossidi di azoto con mezzi di battuta del boccaglio
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
CN106969347B (zh) * 2017-05-16 2023-11-03 中煤科工清洁能源股份有限公司 一种带有锁火装置的锅炉

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112361331A (zh) * 2019-10-11 2021-02-12 中国石油大学(华东) 一种具有高引射烟气的高原型燃油燃烧器及设计方法
CN112361331B (zh) * 2019-10-11 2022-04-29 中国石油大学(华东) 一种具有高引射烟气的高原型燃油燃烧器及设计方法

Also Published As

Publication number Publication date
RU2612694C2 (ru) 2017-03-13
IN2014DN09354A (de) 2015-07-17
RU2014144080A (ru) 2016-05-27
CN103851623B (zh) 2017-03-15
US20160265766A1 (en) 2016-09-15
CN103851623A (zh) 2014-06-11
EP3124861A4 (de) 2017-11-22
WO2015143582A1 (zh) 2015-10-01

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