EP0617231B1 - Brûleur à évaporation de mazout et procédé pour sa mise en oeuvre - Google Patents

Brûleur à évaporation de mazout et procédé pour sa mise en oeuvre Download PDF

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Publication number
EP0617231B1
EP0617231B1 EP94103983A EP94103983A EP0617231B1 EP 0617231 B1 EP0617231 B1 EP 0617231B1 EP 94103983 A EP94103983 A EP 94103983A EP 94103983 A EP94103983 A EP 94103983A EP 0617231 B1 EP0617231 B1 EP 0617231B1
Authority
EP
European Patent Office
Prior art keywords
burner
air
air supply
injectors
oil
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
EP94103983A
Other languages
German (de)
English (en)
Other versions
EP0617231A1 (fr
Inventor
Peter Prof. Dr.-Ing. Hofbauer
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.)
Viessmann Werke GmbH and Co KG
Original Assignee
Viessmann Werke GmbH and Co KG
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 Viessmann Werke GmbH and Co KG filed Critical Viessmann Werke GmbH and Co KG
Publication of EP0617231A1 publication Critical patent/EP0617231A1/fr
Application granted granted Critical
Publication of EP0617231B1 publication Critical patent/EP0617231B1/fr
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 
    • 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
    • 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
    • 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
    • F23D11/402—Mixing chambers downstream of the nozzle
    • 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 
    • F23C2202/00—Fluegas recirculation
    • F23C2202/30—Premixing fluegas with combustion air
    • 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
    • F23C2900/06041—Staged supply of oxidant
    • 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
    • F23C2900/07002—Premix burners with air inlet slots obtained between offset curved wall surfaces, e.g. double cone burners
    • 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
    • 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
    • F23C2900/99006—Arrangements for starting combustion

Definitions

  • the invention relates to a method for operating a Oil evaporation burner, under the pressure supply of combustion air and with the addition of recycled into the burner Exhaust gases of the injected liquid fuel in an outflow direction divergent swirl flow further resolved becomes.
  • the invention further relates to an oil vapor burner to carry out the procedure.
  • Such a method is known from EP-A-0 436 113 and also a suitable burner, which essentially consists of there is a housing on which the oil supply nozzle assembly is centered with this surrounding supply opening for the introduction of combustion air is arranged in a combustion chamber side in Housing arranged swirl pot diverging in the outflow direction is directed, on which exhaust gas intake ducts are arranged, those directed tangentially into the swirl pot Injectors for the introduction of recirculated exhaust gases into the Open the swirl pot.
  • the associated Burners can also reduce the pollutant emissions values during combustion liquid fuels can be minimized. It has however, in the practical implementation of the method shown that in the start-up phase of the burner, if no operating temperatures yet prevail in the combustion chamber and on the burner, this often goes out after ignition and only difficult to bring to permanent operation.
  • the invention is accordingly based on the object at the outset mentioned method and the associated burner improve that the starting difficulties mentioned no longer occur.
  • This object is achieved with respect to the method in that the return and introduction of the exhaust gases into the burner first after passing through the burner start-up phase and thereby Return of exhaust gases during the start-up phase by pneumatic generated barrier curtains from air is prevented.
  • a regulation or throttling of recirculated exhaust gas quantities is admittedly known from DE-A-24 61 078, but this is only about an influence on the flame temperature for the purpose of NOX reduction and not about the problem of maintaining the Burning process during the start-up phase, and on the other hand here the throttling of the returned and even more or less hot exhaust gases directly through a sleeve-like, mechanically operated slide causes.
  • the ones to be returned Exhaust gases are only from Flue gas extraction from the boiler is removed and outside the boiler through a return line to the burner.
  • the burner consists of a housing 1 on which the Oil supply line 2 is arranged with the nozzle D.
  • the air for the combustion of the atomized by the nozzle D, ie quasi-evaporated oil is supplied through the opening 2 'in which coaxially extends the oil supply 2.
  • the nozzle D is directed into a conical funnel 3 which is open at the top and bottom and has two regions in the form of injectors 5, ie these injectors 5 are arranged in the wall 3 ′ of the funnel 3.
  • the entire part A of the burner protrudes into the combustion chamber K (see FIG. 3) of the boiler HK, which is only indicated.
  • the funnel 3 is located in a shaft 4 of the housing 1 which is open on two sides. This shaft 4 is delimited by two air supply chambers 6, the inner walls 7 of which are aligned with the exhaust gas inflow openings 5 'of the two injectors 5 Air outflow openings 8 are provided.
  • Correspondingly inclined tubes 9 are arranged on the two injectors 5 and are connected to the bottom 10 of the shaft 4 which (see FIG.
  • the air flowing out of the air outflow openings 8 at high speed and flowing into the exhaust gas inflow openings 5 'of the injectors 5 creates a negative pressure at the exhaust gas inflow openings 5', through which a part of the gases formed in the combustion chamber K into the shaft 4 of the burner and thus into the injectors 5 are sucked in, ie a mixture of air and exhaust gas flows from the injectors 5 into the funnel 3 and there forms a swirl flow surrounding the oil mist formed and burning by the nozzle D, which mixes with the flame and reduces the flame temperature. This applies to continuous operation.
  • injectors 5 as shown at the top left in FIG. 2, are open on both sides, so are on both sides of the injector 5 tubes 9 arranged. If the injectors 5, however, how shown below right, are only open on one side, which also is possible, only one tube 9 is arranged.
  • the duration of the burner start-up phase predetermined period then switches the timer 18 of the fan 16 from. If a thermal sensor 19 is provided, this is caused by the thermal sensor 19 when there are normal operating temperatures in the combustion chamber K and on the burner to have.
  • the air supply line 13 (see also Fig. 3) provided with a valve 20 which during the start-up phase of the burner is open, so that by this air supply line 13 air into the air chamber 11 and so that can get into the tube 9.
  • a valve 20 which changes outside Temperature ranges of the burner is also appropriate Fig. 4 with a timer 18 or a thermal sensor 19 connected and is at the end of these elements Start-up phase closed.

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)
  • Physical Or Chemical Processes And Apparatus (AREA)

Claims (8)

  1. Procédé pour le fonctionnement d'un brûleur à vaporisation de fuel pour lequel, en alimentant par pression de l'air de combustion et en mélangeant des gaz perdus recyclés dans le brûleur, le combustible liquide injecté par tuyère continue à être dissous dans un flux directeur rotationnel divergent dans le sens de l'évacuation,
    caractérisé en ce
    que le recyclage et l'admission des gaz perdus dans le flux directeur rotationnel ne sont provoqués qu'après avoir traversé la phase de démarrage du brûleur et l'amenée des gaz perdus recyclés est empêchée pendant la phase de démarrage par des rideaux de retenue en air produits pneumatiquement.
  2. Brûleur à vaporisation de fuel pour exécuter le procédé selon la revendication 1, constitué par un bâti (1) avec un entonnoir (3) pour former un flux directeur rotationnel, des injecteurs (5) pour l'admission de l'air de combustion et l'aspiration des gaz perdus de la chambre de combustion (K) étant placés sur l'entonnoir (3) et une conduite d'amenée de fuel (2) avec une tuyère (D) étant dirigée dans l'entonnoir (3) et une chambre d'amenée d'air (6) avec des orifices d'évacuation de l'air (8) dirigés dans les injecteurs (5) étant de plus placée devant les injecteurs (5),
    caractérisé en ce
    qu'un conduit d'amenée d'air, par exemple un petit tube (9) avec des orifices (14) dirigés transversalement dans un orifice d'amenée des gaz perdus (5') délimité par la paroi (3) de l'injecteur (5) et la paroi (7) de la chambre d'amenée d'air (6) est placé sur les injecteurs (5) et le conduit d'amenée d'air est pourvu de moyens pour l'interruption commandée de l'amenée d'air à la fin de la phase de démarrage du brûleur.
  3. Brûleur à vaporisation de fuel selon la revendication 2,
    caractérisé en ce
    que deux injecteurs (5) avec respectivement au moins un petit tube (9) sont placés sur l'entonnoir (3) en se faisant face diagonalement et une chambre d'amenée d'air (6) avec des orifices d'évacuation d'air (8) correspond à chaque injecteur (5), lesquelles chambres d'air (6) délimitent un puits (4) dans le bâti 1, puits qui est ouvert des deux côtés.
  4. Brûleur à vaporisation de fuel selon la revendication 3,
    caractérisé en ce
    que les injecteurs (5) sont ouverts des deux côtés vers le puits (4) et qu'un petit tube (9) est respectivement placé des deux côtés sur chaque orifice d'admission des gaz perdus (5') des injecteurs (5).
  5. Brûleur à vaporisation de fuel selon la revendication 3,
    caractérisé en ce
    que les injecteurs (5) sont ouverts d'un côté vers le puits (4) et qu'un petit tube (9) est placé sur les orifices d'admission des gaz perdus des injecteurs (5).
  6. Brûleur à vaporisation de fuel selon l'une des revendications 3 à 5,
    caractérisé en ce
    que les petits tubes (9) sont raccordés à une chambre d'amenée d'air (6) formant le fond (10) du puits (4), chambre d'amenée d'air (6) à laquelle une conduite d'amenée d'air (13) est raccordée et laquelle chambre d'amenée d'air (6) est pourvue d'un conduit de passage centré (12) pour la conduite d'amenée de fuel (2).
  7. Brûleur à vaporisation de fuel selon l'une des revendications 2 à 6,
    caractérisé en ce
    que la conduite d'amenée d'air (13) pour le petit tube (9) qui existe au moins est pourvue d'une soufflante séparée (16) dont l'entraínement (16') est en relation de commutation avec une horloge à minuterie (18) ou un capteur thermique (19).
  8. Brûleur à vaporisation selon l'une des revendications 2 à 6,
    caractérisé en ce
    que la conduite d'amenée d'air (13) pour le petit tube (9) qui existe au moins est en relation avec la soufflante du brûleur (17) pour l'amenée d'air de combustion du brûleur et la conduite d'amenée d'air (13) est pourvue d'une vanne (20) dont le vérin (20') est en relation de commutation avec une horloge à minuterie (18) ou un capteur thermique (19).
EP94103983A 1993-03-23 1994-03-15 Brûleur à évaporation de mazout et procédé pour sa mise en oeuvre Expired - Lifetime EP0617231B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4309115A DE4309115A1 (de) 1993-03-23 1993-03-23 Verfahren zum Betrieb eines Ölverdampfungsbrenners
DE4309115 1993-03-23

Publications (2)

Publication Number Publication Date
EP0617231A1 EP0617231A1 (fr) 1994-09-28
EP0617231B1 true EP0617231B1 (fr) 1998-11-04

Family

ID=6483439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94103983A Expired - Lifetime EP0617231B1 (fr) 1993-03-23 1994-03-15 Brûleur à évaporation de mazout et procédé pour sa mise en oeuvre

Country Status (6)

Country Link
US (1) US5453004A (fr)
EP (1) EP0617231B1 (fr)
AT (1) ATE173075T1 (fr)
CA (1) CA2119727C (fr)
DE (2) DE4309115A1 (fr)
DK (1) DK0617231T3 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4424639A1 (de) * 1994-07-13 1996-01-18 Abb Research Ltd Verfahren und Vorrichtung zur Brennstoffverteilung in einem sowohl für flüssige als auch für gasförmige Brennstoffe geeigneten Brenner
DE4446842B4 (de) * 1994-12-27 2006-08-10 Alstom Verfahren und Vorrichtung zum Zuleiten eines gasförmigen Brennstoffs in einen Vormischbrenner
DE19527088A1 (de) * 1995-07-25 1997-01-30 Viessmann Werke Kg Ölverdampfungsbrenner
DE19545036A1 (de) * 1995-12-02 1997-06-05 Abb Research Ltd Vormischbrenner
DE19606733C1 (de) * 1996-02-23 1997-05-07 Viessmann Werke Kg Verfahren zum Betrieb insbesondere eines Ölvergasungsbrenners und Brenner zu seiner Durchführung
DE19635545C1 (de) * 1996-09-02 1998-02-26 Viessmann Werke Kg Verfahren zur sicheren Zündung und zum Anfahren von Brennern mit Abgasrückführung beim Einsatz flüssiger oder gasförmiger Brennstoffe und Brennereinrichtungen zur Durchführung der Verfahren
DK0866268T3 (da) * 1997-03-18 2001-06-18 Alstom Schweiz Ag Fremgangsmåde til drift af en hvirvelstabiliseret brænder, samt brænder til gennemførelse af fremgangsmåden
ATE232588T1 (de) * 1997-03-18 2003-02-15 Alstom Switzerland Ltd Verfahren zum betrieb einer kesselanlage und die kesselanlage
DE19721936A1 (de) * 1997-05-26 1998-12-03 Abb Research Ltd Brenner zum Betrieb eines Aggregates zur Erzeugung eines Heissgases
DE19814768A1 (de) * 1998-04-02 1999-10-07 Viessmann Werke Kg Blaubrenner
DE59812039D1 (de) * 1998-11-18 2004-11-04 Alstom Technology Ltd Baden Brenner
JP3735594B2 (ja) * 2002-06-28 2006-01-18 株式会社東芝 光ディスク装置と光ディスク装置の待機方法
US7199088B2 (en) 2002-07-01 2007-04-03 Shell Oil Company Lubricating oil for a diesel powered engine and method of operating a diesel powered engine
NO325990B1 (no) * 2006-06-23 2008-09-01 Rolf B Rummelhoff Etterbrenner for gass fra gassifiseringsanlegg for trebrensel

Family Cites Families (8)

* 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
US4277942A (en) * 1979-02-28 1981-07-14 Kommanditbolaget United Stirling Exhaust gas recirculation apparatus
DE3424069C2 (de) * 1984-06-29 1987-01-15 Electrolux S.A.R.L., Vianden Topfbrenner für flüssigen Brennstoff
GB2175684B (en) * 1985-04-26 1989-12-28 Nippon Kokan Kk Burner
DE3821526A1 (de) * 1988-06-25 1989-12-28 May Michael G Verfahren und einrichtung zur verbrennung von brennstoff
CH680157A5 (fr) * 1989-12-01 1992-06-30 Asea Brown Boveri
CH684962A5 (de) * 1991-07-03 1995-02-15 Asea Brown Boveri Brenner zum Betrieb einer Brennkraftmaschine, einer Brennkammer einer Gasturbogruppe oder einer Feuerungsanlage.
DE4209221A1 (de) * 1992-03-21 1993-09-23 Deutsche Forsch Luft Raumfahrt Stickoxidarmer brenner

Also Published As

Publication number Publication date
ATE173075T1 (de) 1998-11-15
DK0617231T3 (da) 1999-07-19
CA2119727A1 (fr) 1994-09-24
DE4309115A1 (de) 1994-09-29
CA2119727C (fr) 1999-03-23
EP0617231A1 (fr) 1994-09-28
US5453004A (en) 1995-09-26
DE59407199D1 (de) 1998-12-10

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