EP0269487B2 - Vormischgasbrenner mit Druckluftführung - Google Patents

Vormischgasbrenner mit Druckluftführung Download PDF

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Publication number
EP0269487B2
EP0269487B2 EP87402425A EP87402425A EP0269487B2 EP 0269487 B2 EP0269487 B2 EP 0269487B2 EP 87402425 A EP87402425 A EP 87402425A EP 87402425 A EP87402425 A EP 87402425A EP 0269487 B2 EP0269487 B2 EP 0269487B2
Authority
EP
European Patent Office
Prior art keywords
burner
combustible gas
combustion chamber
pilot burner
chamber
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
EP87402425A
Other languages
English (en)
French (fr)
Other versions
EP0269487A1 (de
EP0269487B1 (de
Inventor
François Cagnon
Denis Di Paola
Georges Austruy
André Vinchon
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.)
Engie SA
Original Assignee
Gaz de France SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9340639&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0269487(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Gaz de France SA filed Critical Gaz de France SA
Priority to AT87402425T priority Critical patent/ATE56806T1/de
Publication of EP0269487A1 publication Critical patent/EP0269487A1/de
Publication of EP0269487B1 publication Critical patent/EP0269487B1/de
Application granted granted Critical
Publication of EP0269487B2 publication Critical patent/EP0269487B2/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
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • 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
    • F23C3/004—Combustion apparatus characterised by the shape of the combustion chamber the chamber being arranged for submerged combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters

Definitions

  • the present invention relates to a heating installation comprising a main burner with submerged combustion chamber and a pilot ignition burner suitable for this installation.
  • One of the objects of the present invention is to solve these problems, thus ensuring good flame stability over the entire range of air and gas supply to the burner, without risking blowing or flashback.
  • the invention relates to an installation according to claim 1.
  • the relatively low-power pilot burner of the invention identified as a whole 1, essentially comprises a premix chamber 2 supplied with air and combustible gas by separate inlets respectively 3 and 4, advantageously opening into this chamber 2 substantially radially at 13 and 14.
  • the chamber 2 which has the general shape of an elongated cylindrical box with substantially circular section is closed on its front face by a metal grid 5 for stabilization and d hanging of flames.
  • This grid which is therefore relatively sensitive to thermal stresses (compared to ceramic plates) may, as known per se, have orifices of suitable diameter and distribution to ensure good adhesion and good stabilization of the flames at the entrance to the chamber. burner 6.
  • the air and fuel gas inlets 3 and 4 open into the chamber 2 towards the end opposite the grid 5.
  • the combustion chamber 6 constitutes the combustion chamber of the main burner, (marked 10).
  • the premix chamber 2 On its rear face, the premix chamber 2 is closed by a wall 8 on which is mounted, in leaktight manner, in order to resist the internal pressure of the premix chamber, a means of visual control 9 of the flame.
  • This control means can consist of a glass plate.
  • FIG. 1 it will be noted that the front and rear sides of the burner have been identified by the letters AV and AR respectively, referring to the circulation of air and combustible gas, then of the gas mixture. in the burner, as shown by the arrows.
  • the ignition of the burner is ensured by an electrode 11 supplied with high voltage suitable as shown in diagram 12 and suitably isolated, the ignition being effected by sparks or electric arc between the tip 13 'of the electrode d ignition and the adjacent wall of the grid 5 suitably grounded of the box forming the distribution chamber 2.
  • the electric power supply cable 9 of the electrode 11 crosses, in a pressure-tight manner in the chamber in question, at 15, the wall of this chamber. Sealing can in particular be ensured by means of a cable gland.
  • the air inlet 3 is provided with a passage 16 of relatively small cross section relative to that of the duct 3 , this orifice being formed in a part 17 of the diaphragm type, while on the complementary supply 4 of combustible gas, there is provided a member 18 with calibrated orifice 19, of the type injector or the like.
  • the injector 18 is disposed at the opening 14 of the inlet 4 opening into the premix chamber 2.
  • the gas flow rate is automatically adjusted to the value required by the calibrated injector regardless of the pressure variations of the gas supply (within a current range).
  • the pilot pilot burner 1 is connected to the higher power burner, marked 10, by means of a tube 24 plunging into the bath 7 to be heated and having a slightly diameter more important than that of the chamber 2.
  • This tube 24 can consist of a substantially vertical projection projecting from the wall of the combustion chamber 6.
  • a joint or support plane 25 situated above the level 7 ′ of the bath 7 allows the pilot burner to be correctly positioned with respect to the main burner 6, so that the pilot opens substantially perpendicularly into the combustion chamber 6 of the main burner, extending only very slightly therein in order to do not disturb the operating conditions of said main burner.
  • Seals 26 can seal between the base of the tube 24 and the opposite part of the pilot premix chamber.
  • the immersion depth of the main burner 10 is, in practice, currently not limited.
  • such an ionization electrode 27 is, when provided, advantageously mounted with the ignition electrode 11, towards the central part of the flame stabilization grid 5, substantially parallel to the direction d flow of the fuel mixture from the premix chamber 2 to the combustion chamber 6.
  • the pilot burner 1 is supplied with combustible gas by a pipe 30 connected to the general distribution channel 34, and with air by a pipe 31, the air and combustible gas inlets 3 and 4 in FIG. 1 constituting the through ends of the pipes 30 and 31 at the level of the premix chamber of the burner.
  • the lines 30 and 31 show the valves 23 and 22.
  • the pipe 31 for supplying air to the pilot is in fact an air pipe coming from the pipe for supplying air to the main burner.
  • the “total" air necessary to ensure good operating conditions for the pilot burner 1 and the main burner 10 immersed in the heating bath 7, is supplied by a fan or compressor 32 which supplies not only the pipe 31, but also driving 33.
  • the main burner 10 is supplied with air by this pipe 33 and with combustible gas by a pipe 35 also connected to the general distribution channel 34, the premix being then delivered to the supply pipe 36 to the burner 10.
  • the main burner 10 is ignited, as known per se, by means of the pilot burner 1.
  • the pilot burner 1 is supplied with an air / combustible gas ratio lower than the stoichiometric dosage.
  • the main burner 10 is supplied with premix with a slight excess of air.
  • the air / fuel gas dosage of the pilot burner is perfected by an additional supply of air at the level of the grate shown diagrammatically in 5 opening into the combustion chamber 6, thus achieving the stoichiometric dosage of the fuel mixture of the burner- pilot 1.
  • the excess air present in the feed premix of the main burner 10 and which is used by the pilot burner 1 makes it possible to find substantially stoichiometric conditions at the level of the main burner 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Claims (6)

1. Heizvorrichtung mit einem Hauptbrenner (10), dessen Zündung durch einen Pilotzündbrenner (1) erhalten wird, in welcher Vorrichtung:
a) - der Pilotzündbrenner (1) aufweist:
eine Vormischkammer (2) für das Mischen von die Verbrennung bewirkender Luft und von brennbarem Gas,
- eine Brennkammer (6), an welcher ein Ende der Vormischkammer mündet,
- eine Zufuhr (3, 31) für die die Verbrennung bewirkende Luft, die mit der Vormischkammer (2) in Verbindung steht, und die örtlich eine Verengung mit einem Durchgang (16) für die die Verbrennung bewirkende Luft aufweist,
- eine Zufuhr (4, 30) für brennbares Gas, welche mit der Vormischkammer (2) in Verbindung steht, und eine kalibrierte Öffnung (19) für den Durchgang des brennbaren Gases aufweist,
- eine Zündelektrode (11) für das Gemisch von die Verbrennung bewirkender Luft und brennbarem Gas, und
- ein metallisches Gitter (5) für die Stabilisierung der Flamme, welches quer über dem Ende der Vormischkammer (2) angeordnet ist, wodurch diese letztere mit der Brennkammer (6) in Verbindung steht, wobei die Zündelektrode (11) quer durch das Gitter (5) montiert ist, um das Gemisch von die Verbrennung bewirkender Luft und brennbaren Gas zu entflammen, welche im wesentlichen in ihrer Gesamtheit in der Vormischkammer (2) gemischt wurden,
b) - der Hauptbrenner (10) eine Brennkammer (6) aufweist, die durch ihre geeigneten Zufuhren (33, 35) mit dem Gemisch von die Verbrennung bewirkender Luft und brennbarem Gas versorgtwird, wobei diese Brennkammer, die mit der des Pilotbrenners gemeinsam ist, mit einem Teil der Vormischkammer (2) des Pilotbrenners in einem Bad (7) der zu erhitzenden Flüssigkeit eingetaucht ist,
c) die die Verbrennung bewirkende Luft dem Pilotbrenner und dem Hauptbrennerdurch eine selbe Versorgungsquelle (32) geliefert wird und
d) Regulierungsmittel (22, 23) für das Gemisch von die Vebrennung bewirkender Luft und brennbarem Gas für die Versorgung des Pilotbrenners vorgesehen sind.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Pilotzündbrenner (1) am Eingang der Verbrennungskammer des Hauptbrenners (10) im wesentlichen senkrecht zu diesem angebracht ist, und daß er sich in die Brennkammer nur auf eine verringerte Tiefe erstreckt.
3. Heizvorrichtung nach Anspruch 1 oder nach Anspruch 2, dadurch gekennzeichnet, daß die Zufuhr (3) für die die Vebrennung bewirkende Luft des Pilotzündbrenners (1) direkt in ihre Vormischkammer (2) mündet und die Verengung, welche diese Luftzufuhr mit dem Durchgang für die die Verbrennung bewirkende Luft aufweist, eine Membrane (17) hat, durch welche eine Öffnung (16) angebracht ist, deren Maße die Bildung eines Überdruckes in der Vormischkammer sicherstellen.
4. Heizvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Pilotzündbrenner auch eine lonisationselektrode (27) aufweist, welche quer durch das Flammenstabilisationsgitter (5) angebracht ist.
5. Heizvorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Zündelektroden (11) und lonisationselektroden (27) des Pilotzündbrenners zum zentralen Teil des Flammenstabilisationsgitters (5) hin angebracht sind, im wesentlichen parallel zur Strömungsrichtung des brennbaren Gemisches, welches von der Vormischkammer (2) zur Brennkammer (6) hin zirkuliert.
6. Zünverfahren des Hauptbrenners einer Heizvorrichtung nach einem der vorangegangenen Ansprüche mittels eines Pilotbrenners, in welchem Verfahren:
- man die Vormischkammer (2) des Pilotbrenners mit der die Verbrennung bewirkender Luft und brennbarem Gas versorgt, in einem Verhältnis die Verbrennung bewirkender Luft/brennbares Gas, unter ihrer stöchiometrischen Dosierung, und daß man das sich ergebende unterstöchiometrische Gemisch durch das Gitter zu der Brennkammer (6) hin zirkulieren läßt,
- man außerdem zu derselben Brennkammer (6) über die Zufuhren (33, 35) des Hauptbrenners (10), ein Gemisch von die Verbrennung bewirkender Luft und brennbarem Gas mit einem Verhälhis von die Verbrennung bewirkender Luft/brennbarem Gas ausreichend höher als ihre stöchiometrische Dosierung liefert, um ein stöchiometrisches Gemisch zwischen den Gasen zu erhalten, die direkt zu der Brennkammer (6) geliefert werden, und denen, die quer durch das Flammenstabilisationsgitter (5) geliefert werden, und man zu diesem Gitter mindestens einen Teil des überstöchiometrischen Gemisches leitet, welches direkt zu der Brennkammer (6) geliefert wurde;
- und man das in dieser Brennkammer (6) enthaltene Gasgemisch, ausgehend von der Zündelektrode (11) des Pilotbrenners, entflammt.
EP87402425A 1986-11-07 1987-10-27 Vormischgasbrenner mit Druckluftführung Expired - Lifetime EP0269487B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87402425T ATE56806T1 (de) 1986-11-07 1987-10-27 Vormischgasbrenner mit druckluftfuehrung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8615556A FR2606490B1 (fr) 1986-11-07 1986-11-07 Bruleur a gaz du type a air souffle et a premelange
FR8615556 1986-11-07

Publications (3)

Publication Number Publication Date
EP0269487A1 EP0269487A1 (de) 1988-06-01
EP0269487B1 EP0269487B1 (de) 1990-09-19
EP0269487B2 true EP0269487B2 (de) 1993-08-11

Family

ID=9340639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87402425A Expired - Lifetime EP0269487B2 (de) 1986-11-07 1987-10-27 Vormischgasbrenner mit Druckluftführung

Country Status (10)

Country Link
US (1) US4875850A (de)
EP (1) EP0269487B2 (de)
JP (1) JPS6488015A (de)
KR (1) KR950013963B1 (de)
AT (1) ATE56806T1 (de)
CA (1) CA1303476C (de)
DE (1) DE3765092D1 (de)
ES (1) ES2017742T5 (de)
FR (1) FR2606490B1 (de)
GR (1) GR3000846T3 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235804A (en) * 1991-05-15 1993-08-17 United Technologies Corporation Method and system for combusting hydrocarbon fuels with low pollutant emissions by controllably extracting heat from the catalytic oxidation stage
US5318436A (en) * 1991-11-14 1994-06-07 United Technologies Corporation Low NOx combustion piloted by low NOx pilots
GB2270750B (en) * 1992-09-11 1996-08-14 Stoves Ltd Improvements in and relating to gas-fired cooking appliances
GB2304886B (en) * 1995-08-31 2000-03-15 Butler Tech Ltd An apparatus and a method for heating a material
GB9812984D0 (en) * 1998-06-16 1998-08-12 Graveson Energy Management Ltd Gasification reactor apparatus
GB9812975D0 (en) 1998-06-16 1998-08-12 Graveson Energy Management Ltd Burner
US7340893B1 (en) * 2004-05-14 2008-03-11 Rowan James A Steam generator system
US10677455B2 (en) 2015-06-24 2020-06-09 Khalifa University of Science and Technology Electrostatically manipulated flames for compact heat generation
CN109059003A (zh) * 2018-06-01 2018-12-21 柳州东侯生物能源科技有限公司 裂解气化炉
KR101964989B1 (ko) * 2018-09-12 2019-04-02 국방과학연구소 연소기 점화용 토치 점화기

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
DE1008855B (de) * 1939-12-13 1957-05-23 Neubecker Fa C A Zuendvorrichtung bei Gasfeuerungen mit UEberdruck im Brennraum
FR1057371A (fr) * 1952-05-26 1954-03-08 Heurtey & Cie Dispositif de chauffage
US3228451A (en) * 1957-06-25 1966-01-11 Urquhart S 1926 Ltd Method of burning fuels
US3192920A (en) * 1963-09-03 1965-07-06 Submerged Comb Inc Combustion apparatus and control system therefor
US3730668A (en) * 1971-03-03 1973-05-01 Tokyo Gas Co Ltd Combustion method of gas burners for suppressing the formation of nitrogen oxides and burner apparatus for practicing said method
US3770369A (en) * 1971-03-31 1973-11-06 Mitsui Shipbuilding Eng Method of burning liquid fuel in fluid bed apparatus
US3890084A (en) * 1973-09-26 1975-06-17 Coen Co Method for reducing burner exhaust emissions
US3957421A (en) * 1974-09-03 1976-05-18 Raytheon Company Heat injector gas burner
JPS5812481B2 (ja) * 1976-03-01 1983-03-08 株式会社日立製作所 バ−ナ
US4224019A (en) * 1978-02-27 1980-09-23 Westinghouse Electric Corp. Power burner for compact furnace
US4236464A (en) * 1978-03-06 1980-12-02 Aerojet-General Corporation Incineration of noxious materials
JPS5691108A (en) * 1979-12-21 1981-07-23 Babcock Hitachi Kk Combustion method capable of reducing nox and uncombusted substance
NL8005717A (nl) * 1980-10-16 1982-05-17 Nefit Nv Verwarmingsketel alsmede een werkwijze voor het regelen van de verbranding in een dergelijke ketel.
FR2510731A1 (fr) * 1981-08-03 1983-02-04 Hublard Marcel Appareil de chauffage, notamment bruleur a gaz atmospherique pour chaudieres
DE3230853A1 (de) * 1982-08-19 1984-02-23 Stünkel, Klaus-Erich, 3000 Hannover Geschlossene vorbaubrennkammer mit druckluft-gasbrenner fuer erdoel-erdgas erwaermungs-und erdoel erwaermungs- und trennungsvorrichtungen
FR2547394B1 (fr) * 1983-06-08 1987-07-17 Gaz De France Bruleur a gaz du type a premelange et a controle de flamme et utilisation de ce bruleur en particulier pour installation a tube immerge
FR2589555B1 (fr) * 1985-11-06 1989-11-10 Gaz De France Bruleur a gaz a air souffle

Also Published As

Publication number Publication date
CA1303476C (fr) 1992-06-16
FR2606490A1 (fr) 1988-05-13
KR950013963B1 (ko) 1995-11-18
US4875850A (en) 1989-10-24
KR880006505A (ko) 1988-07-23
JPS6488015A (en) 1989-04-03
ES2017742B3 (es) 1991-03-01
ATE56806T1 (de) 1990-10-15
EP0269487A1 (de) 1988-06-01
ES2017742T5 (es) 1995-08-01
EP0269487B1 (de) 1990-09-19
FR2606490B1 (fr) 1990-07-13
DE3765092D1 (de) 1990-10-25
GR3000846T3 (en) 1991-11-15

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