WO1998036218A1 - Bruleur a gaz ou a mazout - Google Patents

Bruleur a gaz ou a mazout Download PDF

Info

Publication number
WO1998036218A1
WO1998036218A1 PCT/EP1998/000730 EP9800730W WO9836218A1 WO 1998036218 A1 WO1998036218 A1 WO 1998036218A1 EP 9800730 W EP9800730 W EP 9800730W WO 9836218 A1 WO9836218 A1 WO 9836218A1
Authority
WO
WIPO (PCT)
Prior art keywords
burner
air
air box
plate
tube
Prior art date
Application number
PCT/EP1998/000730
Other languages
German (de)
English (en)
Inventor
Christoph Schmitz
Original Assignee
Alpro Aluminium Processing Gmbh
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 Alpro Aluminium Processing Gmbh filed Critical Alpro Aluminium Processing Gmbh
Publication of WO1998036218A1 publication Critical patent/WO1998036218A1/fr

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 
    • F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
    • F23C5/02—Structural details of mounting
    • 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
    • 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
    • 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
    • F23D11/404—Flame tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/02—Casings; Linings; Walls characterised by the shape of the bricks or blocks used
    • F23M5/025—Casings; Linings; Walls characterised by the shape of the bricks or blocks used specially adapted for burner openings
    • 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
    • F23C2900/03005—Burners with an internal combustion chamber, e.g. for obtaining an increased heat release, a high speed jet flame or being used for starting the combustion
    • 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
    • F23C2900/09002—Specific devices inducing or forcing flue gas recirculation

Definitions

  • the invention relates to a gas or oil burner for high performance, the air box with an air supply and a gas or gas.
  • Oil supply and a burner plate with burner mouth includes and which is mounted on a support frame and can be moved with this between the operating position and a rest position outside the furnace.
  • burners which are heated with gas or oil for example for heating a drum furnace which rotates about its horizontal axis
  • which burners are moved in front of a burner receptacle provided for this purpose, and also at the same time - in particular when using high-performance burners - can be partially immersed in the burner holder.
  • the burner receptacle provided for the respective burner possibly tapering slightly towards the inside of the furnace, is generally dimensioned such that there is a sufficient annular gap between the outer circumference of the burner and the inner wall of the tubular burner receptacle remains.
  • the object of the invention is to provide a high-performance burner which avoids the disadvantages described above and with which it is possible to ensure flame speeds of more than approx. 60 m / sec, preferably of approx. 80 to 120 m / sec and more and thus significantly improve the efficiency.
  • a gas or oil burner of the type mentioned at the outset which is distinguished in that the burner is moved into the burner receptacle in the operating position, forming an annular gap surrounding the burner, to the extent that the inside of the furnace Pointing limitation of the burner plate is essentially flush with the inner wall of the furnace and that an axial distance is provided between the air box and the burner plate attached to it, which forms a continuous gap connecting the annular gap and the burner mouth in a normal plane and coaxial to the burner axis.
  • the connecting gap preferably extends over the entire burner cross section and is bridged by spacers which connect the air box and the burner plate to one another.
  • the air box consists of a circular cylindrical, closed air box outer wall coaxial with the axis of the burner, an input end wall with at least one air connection and a central gas or oil supply provided in the burner axis and an air box cover.
  • a combustion tube is fastened coaxially to the air box cover on the air box cover facing the burner mouth, which extends to just before the air box front wall and in which the intensive mixing of the air with the fuel takes place.
  • the burner tube is surrounded by a cladding tube concentric to it, which forms an annular gap with the burner tube jacket. The inflowing air is guided into this gap through appropriate internals and flows along the outer wall of the combustion tube between the latter and the cladding tube toward the air box end wall, cooling it from the outside before it enters the combustion tube and preheating itself.
  • the flow cross-section from the air inlet in the end wall to its entry into the combustion tube increasingly reducing internals inside the air box cause the flow rate of the combustion air supplied through the air nozzle or outlet ends into the front wall to rise sharply and thus when entering the Fuel tube and the encounter with the fuel supplied by the central gas or oil supply in the end wall, the mixing and entangling belung with the fuel before flame formation is significantly favored. It has been shown that the quality of the mixing of the ignited mixture can be further improved, if necessary, by a retaining ring arranged transversely to the direction of flow in the combustion tube.
  • the inside of the air box is coaxially attached to the air box cover, which faces the burner mouth and extends to the front of the air box end wall, and is encased by a pipe belonging to the internals, through which a gap is formed between the combustion pipe and the cladding pipe.
  • An essential feature of the invention is the arrangement already described above of a radial gap which runs essentially in a normal plane to the burner axis and connects the tubular annular gap to the burner mouth, which in a particularly preferred development is provided by the air box cover and the burner block coaxial to the burner axis receiving centering plate is limited and is formed, for example, with the aid of spacers connecting the air box cover and the centering plate.
  • This gap means that where it meets the burner mouth, the injector effect generated by the high speed of the flame striking the burner mouth leads to cold air on the one hand entering the flame through the tubular annular gap, and on the other hand also flue gas components from inside the furnace are also sucked into the gap and led into the flame, whereby, as described above, at least a reduction in the CO and NO proportions in the combustion gases is promoted.
  • Fig. 1 shows a longitudinal section through an inventive
  • Burner; 2 shows a further development of the burner in the area of the burner mouth.
  • FIG. 1 shows the longitudinal section of a burner 1 according to the invention. This is screwed to the support frame 2, which is only indicated in the drawing, and is moved with it into the operating position in the burner receptacle 25 so far that the surface of the burner plate 17 facing the furnace interior cuts approximately with 'the interior furnace wall 29, while a substantially tubular, remains between the outer periphery of the burner 1 and the torch receptacle 25 to the burner axis coaxial ring or mounting gap 24th
  • the burner 1 shown consists of two main parts, namely from the air box 3 to 5 as a receiving and processing facility for air and fuel and which - indirectly included in the air box 3 to 5 through the combustion tube 6 or its mouthpiece 5 - Burner plate 17.
  • An essential feature of the burner 1 according to the invention is that, in the embodiment shown, both parts, namely air box 3 to 5 and burner plate 17, are axially separated from one another and between them a continuous, essentially Chen perpendicular to the burner axis and form the annular or assembly gap 24 with the burner mouth 22 gap 23.
  • the air box 3 to 5 of the illustrated embodiment consists essentially of the input-side base plate 3, the circular-cylindrical closed outer wall 4 and the air box cover 5 facing the burner plate 17.
  • the base plate 3 - in the indicated air connection piece 16 - also includes the schematically indicated one Fan 32 shown only as a symbol coming air connections 33, 34, and also the gas or oil nozzle arranged in the burner axis.
  • a circular cylindrical tube section is attached as a fuel tube 6, which extends towards the base plate 3 and ends at a distance 31 in front of it.
  • the fuel tube 6 can - as shown - be flush with the cover 5 or also protrude towards the burner plate 17 over the cover 5.
  • the fuel tube 6 cuts off with the cover 5 and has a tapered mouthpiece 15 inserted into the cover-side tube opening, which projects with its conical free end a bit into the burner mouth 22 and forms a kind of injector nozzle with it.
  • the main part of the burner plate 17 is the burner block 19, which is held in a plate-shaped centering plate 18 by suitable fastening anchors 20.
  • the burner plate 17 is securely connected to the air box cover 5 via spacers 21 and is thus supported by it.
  • the repeatedly mentioned gap 23 is limited on the one hand by the air box cover 5 and on the other hand by the outer surface of the plate-shaped centering plate 18 receiving the burner block 19 and is defined in its dimensions by the spacers 21.
  • Air boxes 3 to 5 are used to process the gas or oil-air mixture, which requires intensive mixing of the fuel with the air.
  • measures are provided according to the invention which bring about a strong increase in the flow velocity and a strong swirling of the air from the air inlet in the connection piece 16 to the meeting of the combustion air with the fuel injected through the nozzle 12.
  • the diameter of the outer air box wall 4 measures at least 3 to 4 times the diameter of the fuel tube, which - in connection with further air duct fittings 8 to 11 provided in the air box 3 to 5 from the air inlet into the air nozzle 16 leads to a large reduction in the flow cross section until the air enters the combustion tube 6.
  • the fuel tube 6 is encased by a circular cylindrical tube section 9, which concentrically surrounds it with a radial distance 35, the end of the tube section 5 which faces towards the lid 5 begins at a distance 36 from the air box lid 5 and the other end of which is connected to a base plate 7 , which in turn engages in a centering 7A on the inside of the box bottom 3.
  • a radially projecting, flat sheet metal ring 8 which ends at a certain distance in front of the air box outer wall 4, is placed on the tube edge, which together with the tube section 9 forms a flow channel which - starting at the outer edge of the ring 8 - first (see distance 36) between sheet metal ring 8 and air box cover 5 and then (see distance 35) between the outer jacket of the fuel pipe 6 and the pipe section 9 and finally between the base plate 3 and the end of the fuel pipe 3 (distance 31) in the fuel tube 6 leads.
  • the air flowing through the intermediate space 35 between the fuel tube 6 and the tube section 9 surrounding it causes vigorous cooling of the fuel tube and is preheated itself.
  • air baffles 10, 11 are provided, which are used so that they have the effect of the mentioned by the large reduction of Flow cross sections support increased flow speed by vigorous swirling of the fuel-air mixture forming in the combustion or mixing tube 6.
  • the combustion air thus guided enters the interior of the combustion tube 6 so strongly swirled and at high speed through the above-mentioned intermediate space 31, where in a. essentially depending on the flow speed of the resulting mixture from the fuel nozzle 12, the flame is formed which strikes from the fuel pipe mouthpiece 15 at high speed through the burner mouth 22 into the furnace.
  • the shape of the opening of the gap 23 in the burner mouth 22 and, in particular, the arrangement of the burner mouthpiece 15 provided in the form shown as a preferred further development results in a strong injector effect and thereby - as by the arrows 30 indicated - at the entrance of the gap 23 also a strong suction.
  • cold air is sucked in from the outside on the one hand, but on the other hand a corresponding proportion of combustion gases is drawn from the furnace into the ring or assembly gap 24 and further through the gap 23 into the flame or the flame root.
  • a baffle ring 13 can be provided in the combustion tube 6 approximately halfway between the nozzle 12 and the fuel tube mouthpiece 15, which has a central bore 13A as a passage for the flame and is fastened with the aid of brackets 14 is. It is intended to increase the turbulence the.
  • 15 additional air feeds 28 can be provided between the retaining ring and the fuel pipe mouthpiece, which can lead to a further improvement in the combustion.
  • FIG. 2 shows a development of the burner according to the invention, in which a displacement body 26, 27 is provided between the burner tube 6 and burner plate 17 in the burner axis 1A, which causes a reduction in the cross section and thus a further increase in the flame speed.
  • Burner A burner axis support frame, base plate, air box air box, air box outer wall, outer wall air box, air box cover, cover of combustion tube, mixing tube base plate A centering guide plate, guide plate, edge of plate guide tube 0 guide plate, air guide plate 1 guide plate, radial guide 2 oil nozzle; Gas nozzle 3 retaining ring 3A hole 4 holder 5 fuel pipe mouthpiece 6 air connector 7 burner plate 8 centering plate 9 front plate, burner stone 0 mounting anchor 1 spacer 2 burner mouth 3 radial gap, annular gap 4 gap, mounting gap 5 burner receptacle, receiving tube 6 displacer body 7 cone attachment displacer body

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Abstract

L'invention concerne un brûleur à gaz ou à mazout (1) de grande puissance pour chauffer un four, qui comprend une caisse à air (3, 4, 5) coaxiale à l'axe du brûleur et pourvue d'une conduite d'alimentation en gaz ou en mazout (12) et d'une conduite d'air (16). Ce brûleur comprend également une plaque (17) avec un orifice (22) et est monté sur un cadre porteur (2) grâce auquel il peut être déplacé pour passer d'une position de service dans un logement (25) prévu pour le brûleur, dans une position d'arrêt située en dehors de cette cavité. En position de service, le brûleur est dans le logement (25) prévu pour le brûleur, formant un passage annulaire (24) conjointement avec ledit logement, et est introduit jusqu'à ce que sa plaque (17) soit sensiblement à fleur avec la paroi intérieure (29) du four. Entre la caisse à air (3, 4, 5) et la plaque (17) du brûleur coaxiale à la précédente, il est prévu une fente (23) traversante perpendiculaire à l'axe du brûleur (1A), qui relie le passage annulaire (24) à l'orifice (22) du brûleur.
PCT/EP1998/000730 1997-02-14 1998-02-10 Bruleur a gaz ou a mazout WO1998036218A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997105552 DE19705552A1 (de) 1997-02-14 1997-02-14 Gas- oder Ölbrenner
DE19705552.4 1997-02-14

Publications (1)

Publication Number Publication Date
WO1998036218A1 true WO1998036218A1 (fr) 1998-08-20

Family

ID=7820163

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/000730 WO1998036218A1 (fr) 1997-02-14 1998-02-10 Bruleur a gaz ou a mazout

Country Status (2)

Country Link
DE (1) DE19705552A1 (fr)
WO (1) WO1998036218A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101438100B (zh) * 2006-03-31 2011-11-16 Nbp有限责任公司 燃烧器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITSA20110018A1 (it) * 2011-07-29 2011-10-28 Mario Provenza Doppia piastra per bruciatori per forni
FR3002024B1 (fr) * 2013-02-12 2015-02-06 Jose Cousseau Installation de production et de traitement de fumees

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133731A (en) * 1961-07-17 1964-05-19 Zink Co John Apparatus for heating gases
DE1501954A1 (de) * 1966-01-28 1970-03-19 Wagner Hochdruck Dampfturbinen Feuergeschraenk fuer Brenner mit relativ langem Brennrohr
US3711243A (en) * 1971-02-02 1973-01-16 Zink Co John Regenerative tile for fuel burner
FR2195328A5 (fr) * 1972-08-04 1974-03-01 Zink Co John
JPH02143002A (ja) * 1988-11-25 1990-06-01 Ngk Insulators Ltd 燃焼炉用バーナー
EP0408171A1 (fr) * 1989-04-28 1991-01-16 Ngk Insulators, Ltd. Assemblage de briques réfractaire pour un brûleur

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133731A (en) * 1961-07-17 1964-05-19 Zink Co John Apparatus for heating gases
DE1501954A1 (de) * 1966-01-28 1970-03-19 Wagner Hochdruck Dampfturbinen Feuergeschraenk fuer Brenner mit relativ langem Brennrohr
US3711243A (en) * 1971-02-02 1973-01-16 Zink Co John Regenerative tile for fuel burner
FR2195328A5 (fr) * 1972-08-04 1974-03-01 Zink Co John
JPH02143002A (ja) * 1988-11-25 1990-06-01 Ngk Insulators Ltd 燃焼炉用バーナー
EP0408171A1 (fr) * 1989-04-28 1991-01-16 Ngk Insulators, Ltd. Assemblage de briques réfractaire pour un brûleur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 384 (M - 1013) 20 August 1990 (1990-08-20) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101438100B (zh) * 2006-03-31 2011-11-16 Nbp有限责任公司 燃烧器

Also Published As

Publication number Publication date
DE19705552A1 (de) 1998-08-20

Similar Documents

Publication Publication Date Title
EP0139085B1 (fr) Procédé et brûleur pour la combustion des combustibles liquides ou gazeux avec diminution de la formation de NOx
EP0279913B1 (fr) Brûleur pour la combustion de combustibles liquides ou gazeux
DE69306039T2 (de) Verbrennungsverfahren mit niedrigem NOx-Gehalt und Brennervorrichtung zur Durchführung des Verfahrens
DE2043808C2 (de) Verbrennungsvorrichtung zum Betrieb mit Heizgas
EP0931979A1 (fr) Procédé et dispositif pour supprimer les fluctuations par flamme et par pression dans un four
DE3842842A1 (de) Atmosphaerischer brenner
DE2700671C2 (de) Blaubrennender Ölbrenner
DE4319213A1 (de) Brenner zur schnellen und motorunabhängigen Aufheizung eines Abgaskatalysators
EP0348646B1 (fr) Brûleur
EP1898152B1 (fr) Unité de mélange pour un brûleur
WO1998036218A1 (fr) Bruleur a gaz ou a mazout
DE4244400C2 (de) Brenner zur Heißgaserzeugung
DE202009010692U1 (de) Mischeinrichtung für einen Brenner
DE4008692A1 (de) Mischeinrichtung fuer oelgeblaesebrenner
AT504732B1 (de) Brenner
DE4435640C2 (de) Brenner zur Verbrennung von staubförmigem Brennstoff
EP0536556A2 (fr) Brûleur pour combustibles liquides et/ou gazeux
DE3009764A1 (de) Kohlebrenner
EP0864812A2 (fr) Dispositif de mélange pour brûleur à gaz et à huile
DE2819075A1 (de) Atmosphaerischer zuend-gasbrenner
DE2432330C2 (de) Brenner mit hoher Austrittsgeschwindigkeit der Rauchgase
DE19824719C2 (de) Brenner, insbesondere Ölbrenner
EP0115858A1 (fr) Brûleur à monter dans les installations de chauffage et de production de vapeur
DE4119278C2 (de) Brennereinrichtung
AT3684U1 (de) Mischeinrichtung für gas- und ölbrenner

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 1998535323

Format of ref document f/p: F

122 Ep: pct application non-entry in european phase