WO2015143582A1 - 一种强制回焰的燃烧室 - Google Patents

一种强制回焰的燃烧室 Download PDF

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Publication number
WO2015143582A1
WO2015143582A1 PCT/CN2014/000371 CN2014000371W WO2015143582A1 WO 2015143582 A1 WO2015143582 A1 WO 2015143582A1 CN 2014000371 W CN2014000371 W CN 2014000371W WO 2015143582 A1 WO2015143582 A1 WO 2015143582A1
Authority
WO
WIPO (PCT)
Prior art keywords
combustion chamber
flame
air
fiber
burning
Prior art date
Application number
PCT/CN2014/000371
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
李延新
Original Assignee
李延新
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 李延新 filed Critical 李延新
Priority to EP14795537.1A priority Critical patent/EP3124861A4/de
Priority to US14/400,883 priority patent/US20160265766A1/en
Priority to RU2014144080A priority patent/RU2612694C2/ru
Publication of WO2015143582A1 publication Critical patent/WO2015143582A1/zh

Links

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 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • 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, 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 
    • 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
    • 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

Definitions

  • the present invention relates to the field of burner technology, and in particular to a forced combustion chamber.
  • Combustion chambers for conventional burners that cover fuel, gas, and coal-fired powders.
  • the combustion oxygen supply mode is a forward distribution (wind direction is consistent with the flame direction).
  • wind direction is consistent with the flame direction.
  • the secondary air is from the cyclone (Also known as steady flame disk, diffuser)
  • a partial negative pressure zone is formed in front of the stable flame disk, which attracts the passive return of the flame outer flame and continuously ignites the continuously ejected fuel.
  • the proportion of primary wind is generally about 20%, and the remaining 80% of the secondary air is strongly mixed with the fuel at the exit of the combustion chamber.
  • the conventional combustion chamber shown in Fig. 1 comprises a combustion chamber (such as a combustion chamber 3).
  • the side wall of the combustion chamber is an outwardly convex arc structure, and one end of the combustion chamber is used for ejecting a flame (such as flame 6).
  • the other end of the combustion chamber is installed with a horizontally arranged air supply duct, and an air outlet is provided inside the air supply duct to the periphery of the fuel nozzle, and is used for conveying secondary air (such as secondary air 4) to the combustion chamber.
  • Air blower (such as blower 1).
  • An object of the present invention is to provide a combustion chamber which is forced to return to flame in order to achieve the advantages of good combustion stability, high fuel burn-up rate and good environmental friendliness.
  • the technical solution adopted by the present invention is: a forced flame returning combustion chamber, including a shape a finger is folded into an arc-shaped structure in the direction of the palm of the hand, and a combustion chamber symmetrically disposed in a hollow arc-shaped cavity around the center of the hand, and a plurality of combustion airs for conveying the combustion air to the inside of the combustion chamber are fitted on the inner side of the end of the combustion chamber
  • the swirling fins, the plurality of swirling fins comprising a plurality of secondary air swirling fins (or tuy (2006)) disposed inside the combustion chamber firing port and configured to radially transport the secondary air into the combustion chamber interior.
  • the plurality of swirl fins include a plurality of tertiary air swirl sheets disposed inside the finger end of the combustion chamber and for transporting tertiary air to the combustion chamber.
  • a fuel nozzle embedded in the inner wall of the combustion chamber and having an outlet passing through the inner wall of the combustion chamber is installed in the middle of the combustion chamber, and the outlet end where the air and the fuel are mixed is the flame outlet of the combustion chamber.
  • a blowing passage is provided, and an empty arc-shaped cavity of the air outlet facing the combustion chamber is disposed inside the air supply passage.
  • the forced flame returning combustion chamber of each embodiment of the present invention comprises a combustion chamber which is shaped like a finger and is bent into a curved structure in the direction of the palm, and is symmetrically arranged in a hollow arc-shaped cavity around the palm, and is fitted inside the end of the combustion chamber.
  • a plurality of swirling fins for transporting secondary air to the interior of the combustion chamber are installed, and a fuel nozzle embedded in the inner wall of the combustion chamber and having an outlet passing through the inner wall of the combustion chamber is installed in the middle of the combustion chamber, and the common outlet end is mixed with air and fuel.
  • the flame and high temperature gas can be forced to the fuel nozzle to quickly ignite the fuel, thereby overcoming the prior art, poor flame stability, low fuel burn-up rate and poor environmental protection. Defects, to achieve good combustion stability, high fuel burn-up rate and environmental protection.
  • Figure 1 is a schematic view showing the working principle of the conventional combustion chamber in the forward air distribution
  • FIG. 2 is a schematic view showing the working principle of the forced air distribution of the combustion chamber of the present invention.
  • 1-blower 2-fuel nozzle; 3-combustion chamber; 4-secondary wind; 5-swirl piece; 6-flame.
  • a forced combustion chamber is provided.
  • the forced flame-removing combustion chamber of the present embodiment includes a combustion chamber (such as a combustion chamber 3) that is shaped like a finger and is bent into a curved structure toward the center of the hand and is symmetrically disposed around the palm of the hand to form a hollow curved cavity.
  • a combustion chamber such as a combustion chamber 3
  • the inner side of the end is fitted with a plurality of swirling fins for conveying combustion air to the interior of the combustion chamber, and includes a plurality of secondary air swirling fins disposed inside the combustion chamber of the combustion chamber for conveying secondary air to the combustion chamber (eg
  • the secondary air swirling piece 4) includes a plurality of tertiary air swirling sheets (such as the tertiary air swirling fins 5) disposed inside the combustion chamber of the combustion chamber and for supplying the tertiary air to the combustion chamber, in the middle of the combustion chamber
  • a fuel nozzle (such as the fuel nozzle 2) embedded in the inner wall of the combustion chamber and having an outlet passing through the inner wall of the combustion chamber is installed, and a common outlet end of the combustion chamber and the fuel nozzle is a flame (e.g., flame 6) outlet.
  • a blowing passage is provided on a side of the hollow arc-shaped cavity of the combustion chamber away from the flame outlet, and an empty arc-shaped cavity of the air outlet facing the combustion chamber is disposed inside the air supply passage.
  • a cavity wall for supplying a combustion air to the combustion chamber.
  • the forced flame returning combustion chamber of the above embodiment adopts a secondary air forced return air distribution mode, cancels the primary air swirling piece at the rear of the conventional combustion chamber, and increases the front portion of the combustion chamber.
  • Secondary and tertiary air swirling sheets When the forced combustion flame is used in the combustion chamber, the proportion of the primary primary air is small, and the oxygen in the center of the flame is provided.
  • the secondary forced air ratio of the radial forced return is larger, when it reaches the inner end of the combustion chamber.
  • the internal swirling airflow is formed to the fire outlet; the rest of the air is tangentially rotated through the third wind swirling sheet, and fully mixed with the internal swirling airflow to ensure the final burning of the fuel.
  • the air distribution layout of the forced flameback combustion chamber can at least achieve the following beneficial effects:
  • the secondary air has a large amount of wind, and its rotational kinetic energy can quickly disperse and fully mix the fuel flow. Since the fuel is in a high-temperature and poly-oxygen environment when it is ejected, it starts to burn intensely, which is high. Viscosity or burnout rate of flame retardant fuel is very important;
  • the air excess coefficient in the combustion chamber is controlled to be around 0.7-0.8, and the under-oxygen environment is beneficial to fuel-type nitrogen oxidation. Reduction of matter and reduction of the formation of high temperature nitrogen oxides;
  • the tertiary air swirling fin is arranged at the exit of the combustion chamber. At this time, the low temperature tertiary air can be added to ensure the fuel burnout rate, and the flame temperature can be lowered to reduce the formation of high temperature nitrogen oxides.

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)
PCT/CN2014/000371 2014-03-28 2014-04-04 一种强制回焰的燃烧室 WO2015143582A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP14795537.1A EP3124861A4 (de) 2014-03-28 2014-04-04 Brennkammer mit erzwungener umkehrung
US14/400,883 US20160265766A1 (en) 2014-03-28 2014-04-04 A forced reversal combustion chamber
RU2014144080A RU2612694C2 (ru) 2014-03-28 2014-04-04 Камера сгорания с принудительным реверсированием потока

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
WO2015143582A1 true WO2015143582A1 (zh) 2015-10-01

Family

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Family Applications (1)

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

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)

Families Citing this family (6)

* 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
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
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
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
CN110657426B (zh) * 2019-10-11 2021-07-20 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

Citations (5)

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GB639483A (en) * 1948-01-02 1950-06-28 Power Jets Res & Dev Ltd Improvements in combustion systems
US4688496A (en) * 1985-07-26 1987-08-25 Enatech Corporation Pulverized coal burner
EP0233680A1 (de) * 1986-01-08 1987-08-26 Hitachi, Ltd. Verfahren und Vorrichtung zur Verbrennung eines Kohlenstaub-Wassergemisches
JPH1038222A (ja) * 1996-07-22 1998-02-13 Sanyo Electric Co Ltd 元混合式面状火炎型バーナ
CN103148477A (zh) * 2013-02-26 2013-06-12 李延新 一种螺旋入粉式煤粉燃烧机

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SU362976A1 (ru) * 1970-07-17 1972-12-30 Б. И. Шестаков, В. П. Мозгунов , Б. И. Калашников Куйбышевский политехнический институт В. В. Куйбышева .союзная
DE2936970A1 (de) * 1979-09-13 1981-04-02 Robert Bosch Gmbh, 7000 Stuttgart Oelzerstaeubungsbrenner, insbesondere fuer geraete kleiner leistung
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US5193346A (en) * 1986-11-25 1993-03-16 General Electric Company Premixed secondary fuel nozzle with integral swirler
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB639483A (en) * 1948-01-02 1950-06-28 Power Jets Res & Dev Ltd Improvements in combustion systems
US4688496A (en) * 1985-07-26 1987-08-25 Enatech Corporation Pulverized coal burner
EP0233680A1 (de) * 1986-01-08 1987-08-26 Hitachi, Ltd. Verfahren und Vorrichtung zur Verbrennung eines Kohlenstaub-Wassergemisches
JPH1038222A (ja) * 1996-07-22 1998-02-13 Sanyo Electric Co Ltd 元混合式面状火炎型バーナ
CN103148477A (zh) * 2013-02-26 2013-06-12 李延新 一种螺旋入粉式煤粉燃烧机

Also Published As

Publication number Publication date
IN2014DN09354A (de) 2015-07-17
RU2612694C2 (ru) 2017-03-13
RU2014144080A (ru) 2016-05-27
CN103851623A (zh) 2014-06-11
EP3124861A1 (de) 2017-02-01
EP3124861A4 (de) 2017-11-22
CN103851623B (zh) 2017-03-15
US20160265766A1 (en) 2016-09-15

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