EP0893651A1 - Brenner für flüssigen und gasförmigen Brennstoff mit niedriger Stickoxidemission - Google Patents

Brenner für flüssigen und gasförmigen Brennstoff mit niedriger Stickoxidemission Download PDF

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Publication number
EP0893651A1
EP0893651A1 EP98430018A EP98430018A EP0893651A1 EP 0893651 A1 EP0893651 A1 EP 0893651A1 EP 98430018 A EP98430018 A EP 98430018A EP 98430018 A EP98430018 A EP 98430018A EP 0893651 A1 EP0893651 A1 EP 0893651A1
Authority
EP
European Patent Office
Prior art keywords
fuel
air supply
liquid
orifices
hearth
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.)
Granted
Application number
EP98430018A
Other languages
English (en)
French (fr)
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EP0893651B1 (de
Inventor
Jean Claude Pillard
Jean Claude Gauthier
Frédéric Bury
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.)
Entreprise Generale de Chauffage Industriel Pillard SA
Original Assignee
Entreprise Generale de Chauffage Industriel Pillard 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
Application filed by Entreprise Generale de Chauffage Industriel Pillard SA filed Critical Entreprise Generale de Chauffage Industriel Pillard SA
Publication of EP0893651A1 publication Critical patent/EP0893651A1/de
Application granted granted Critical
Publication of EP0893651B1 publication Critical patent/EP0893651B1/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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
    • F23D17/002—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel gaseous or liquid fuel
    • 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
    • F23C2202/20—Premixing fluegas with fuel
    • 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 present invention relates to fuel burners liquids and gases with low emission of nitrogen oxides.
  • the main application of the invention is its use for burn both liquid and gaseous fuel while reducing the formation of nitrogen oxides for each of these fuel, which burner is intended to be mounted in the wall an enclosure such as the combustion chamber or hearth of an oven or a boiler.
  • the problem posed is in fact to be able to produce a burner which either truly mixed, i.e. both liquid fuel and gaseous fuel, capable of operating separately or in combination time, and in which the formation of nitrogen oxides as well of origin thermal than fuel for gas and for liquid, i.e. minimized with performance you can't get with any device known to date.
  • a solution to the problem posed is a fuel burner liquid and gaseous comprising a central duct and orifice primary air supply, fuel injection means liquid in a hearth and arranged inside said central orifice in the axis of the latter, a flame stabilizer arranged coaxially to inside this central orifice, at least one orifice for supplying secondary air located outside the fuel injection means liquids and the central primary air port, and injection means gaseous fuels arranged in a ring between the means of liquid fuel injection and the at least orifice in secondary air supply; according to the invention this burner comprises a recirculation circuit for the smoke from the hearth by suctioning it outside the at least secondary air supply port and reinjection into the hearth at the injection means of the gaseous fuel.
  • the flue gas recirculation circuit according to the present invention comprises at least one common exchange wall thermal with the air supply and distribution circuit secondary, which allows such fumes to be cooled before they are reinjected into the hearth and therefore improves the performance of the burner.
  • the staging of air in addition to that of the gas supply although not specifically necessary for a such fuel, however, improves its performance: indeed also reduces the production of combustible nitrogen oxide in addition to that of thermal origin, the production of which is also reduced by recirculating the fumes and by staging the injection of fuel itself.
  • Figure 1 is a simplified sectional view along II 'of the figure 2 and passing through the longitudinal axis XX 'of the burner according to the invention.
  • Figure 2 is a front view of the burner of Figure 1 from inside the foyer.
  • Such a burner comprises in a known manner as described in patent application EP774620, a conduit with a central orifice supply of primary air 4, injection means 8 of liquid fuel in the hearth 2 and arranged inside said orifice 4 central in the axis of the latter, a flame stabilizer 5 disposed coaxially inside this central opening 4, and at least one opening 13 secondary air supply located outside the means 8 for injecting liquid fuel and the central primary air port 4; means 7 for injecting gaseous fuel are furthermore, arranged, but here without being optional since necessary, in a crown between the injection means 8 of liquid fuel and the at least orifice 13 for supplying secondary air.
  • Said orifice 13 for secondary air supply perhaps consisting of a single annular passage or consisting of several supply conduits also arranged along the same diameter in a ring, outside said injection means 7, 8, gaseous and liquid fuels respectively.
  • said liquid and gaseous fuel burner comprises a ring 3 1 made of refractory material comprising all of the air supply, fuel injection and recirculation of smoke, it is mounted through the refractory wall 1 of the hearth 2 so that its front face, through which open said orifices, is projecting relative thereto.
  • the secondary air supply is produced by multiple orifices 13 which are placed peripherally staggered between the smoke extraction orifices 14 in the hearth 2; these suction orifices 14 can themselves be replaced by a only peripheral annular passage, but the arrangement in orifices multiple placed in staggered rows avoids sucking in air secondary in said smoke suction orifices and conversely to prevent this secondary air supply prevents said fumes from being sucked in to be recirculated in the head of the burner.
  • Said means 7 for injecting gaseous fuel and said means for re-injecting the fumes which are preferably therefore coaxial and have their orifices 9 combined, are located in a ring device around the fuel flame stabilizer 5 liquid.
  • the injection means 7 of the gaseous fuel can be, on the one hand, separate feeding rods arranged in a ring around the means 8 for injecting the liquid fuel such as shown in Figure 1; said injection rods 7 can be located in the primary air supply duct 4, or be replaced by nozzles mounted on a single ring also arranged peripherally in a ring around the injection means 8 of the liquid fuel, and supplied by a single supply rod 7.
  • these can have multiple orifices thus creating several independent flames in the hearth 2 which can be either directed parallel to the axis XX 'of the burner, either divergent and oriented towards the secondary air supply orifices 13 for improve the combustion of said liquid fuel after a first combustion phase with primary air; such a divergence of flames, being less necessary in terms of fuel gaseous.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
EP19980430018 1997-07-22 1998-07-10 Brenner für flüssigen und gasförmigen Brennstoff mit niedriger Stickoxidemission Expired - Lifetime EP0893651B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9709594 1997-07-22
FR9709594A FR2766557B1 (fr) 1997-07-22 1997-07-22 Bruleurs a combustible liquide et gazeux a faible emission d'oxydes d'azote

Publications (2)

Publication Number Publication Date
EP0893651A1 true EP0893651A1 (de) 1999-01-27
EP0893651B1 EP0893651B1 (de) 2002-11-20

Family

ID=9509725

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980430018 Expired - Lifetime EP0893651B1 (de) 1997-07-22 1998-07-10 Brenner für flüssigen und gasförmigen Brennstoff mit niedriger Stickoxidemission

Country Status (3)

Country Link
EP (1) EP0893651B1 (de)
DE (1) DE69809502T2 (de)
FR (1) FR2766557B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001063176A1 (en) * 2000-02-24 2001-08-30 John Zink Company, L.L.C. LOW NOx EMISSIONS BURNER ASSEMBLY AND METHOD FOR REDUCING THE NOx CONTENT OF FURNACE FLUE GAS
EP2314921A2 (de) 2009-10-21 2011-04-27 Fives Pillard Verfahren zum Betrieb eines Heizkessels
WO2015154969A1 (en) * 2014-04-10 2015-10-15 Sofinter S.P.A. Burner
CN107606613A (zh) * 2017-09-27 2018-01-19 西安交通大学 燃气空气精确分级内置烟气再循环的低氮旋流燃气燃烧器
CN111853775A (zh) * 2019-04-29 2020-10-30 上海全颉环境设备有限公司 具有内部再循环的燃烧头和包含这种燃烧头的燃烧器
CN115264533A (zh) * 2022-07-24 2022-11-01 哈尔滨工程大学 采用中心点火的天然气同轴分级燃烧室及燃烧方法

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217779A (en) * 1963-07-18 1965-11-16 Zink Co John Gas and liquid fuel burner combination
FR2378236A1 (fr) * 1977-01-21 1978-08-18 Ward Trevor Bruleur auto-recuperateur
FR2468833A1 (fr) * 1979-11-02 1981-05-08 Hague Int Bruleur a recyclage et procede de mise en application de ce bruleur
DE3327597A1 (de) * 1983-07-30 1985-02-07 Deutsche Babcock Werke AG, 4200 Oberhausen Verfahren und brenner zum verbrennen von fluessigen oder gasfoermigen brennstoffen unter verminderter bildung von nox
EP0229231A2 (de) * 1986-01-13 1987-07-22 Deutsche Babcock Werke Aktiengesellschaft Brenner zum Verbrennen von Brennstoffen unter verminderter Bildung von Stickoxiden
EP0348646A2 (de) * 1988-06-30 1990-01-03 Deutsche Babcock Energie- Und Umwelttechnik Aktiengesellschaft Brenner
US5092761A (en) * 1990-11-19 1992-03-03 Exxon Chemical Patents Inc. Flue gas recirculation for NOx reduction in premix burners
US5284438A (en) * 1992-01-07 1994-02-08 Koch Engineering Company, Inc. Multiple purpose burner process and apparatus
EP0675321A1 (de) * 1994-03-29 1995-10-04 ENTREPRISE GENERALE DE CHAUFFAGE INDUSTRIEL PILLARD. Société anonyme dite: Gasbrenner mit sehr niedrigen Stickstoffoxidemissionen
US5458481A (en) * 1994-01-26 1995-10-17 Zeeco, Inc. Burner for combusting gas with low NOx production
EP0774620A1 (de) 1995-11-14 1997-05-21 ENTREPRISE GENERALE DE CHAUFFAGE INDUSTRIEL PILLARD. Société anonyme dite: Brenner für flüssigen oder gasförmigen Brennstoff mit sehr niedriger Stickoxidemission

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217779A (en) * 1963-07-18 1965-11-16 Zink Co John Gas and liquid fuel burner combination
FR2378236A1 (fr) * 1977-01-21 1978-08-18 Ward Trevor Bruleur auto-recuperateur
FR2468833A1 (fr) * 1979-11-02 1981-05-08 Hague Int Bruleur a recyclage et procede de mise en application de ce bruleur
DE3327597A1 (de) * 1983-07-30 1985-02-07 Deutsche Babcock Werke AG, 4200 Oberhausen Verfahren und brenner zum verbrennen von fluessigen oder gasfoermigen brennstoffen unter verminderter bildung von nox
EP0229231A2 (de) * 1986-01-13 1987-07-22 Deutsche Babcock Werke Aktiengesellschaft Brenner zum Verbrennen von Brennstoffen unter verminderter Bildung von Stickoxiden
EP0348646A2 (de) * 1988-06-30 1990-01-03 Deutsche Babcock Energie- Und Umwelttechnik Aktiengesellschaft Brenner
US5092761A (en) * 1990-11-19 1992-03-03 Exxon Chemical Patents Inc. Flue gas recirculation for NOx reduction in premix burners
US5284438A (en) * 1992-01-07 1994-02-08 Koch Engineering Company, Inc. Multiple purpose burner process and apparatus
US5458481A (en) * 1994-01-26 1995-10-17 Zeeco, Inc. Burner for combusting gas with low NOx production
EP0675321A1 (de) * 1994-03-29 1995-10-04 ENTREPRISE GENERALE DE CHAUFFAGE INDUSTRIEL PILLARD. Société anonyme dite: Gasbrenner mit sehr niedrigen Stickstoffoxidemissionen
FR2718222A1 (fr) 1994-03-29 1995-10-06 Pillard Ent Gle Chauffage Indl Perfectionnements de brûleurs à combustible gazeux à très faible émission d'oxyde d'azote.
EP0774620A1 (de) 1995-11-14 1997-05-21 ENTREPRISE GENERALE DE CHAUFFAGE INDUSTRIEL PILLARD. Société anonyme dite: Brenner für flüssigen oder gasförmigen Brennstoff mit sehr niedriger Stickoxidemission

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001063176A1 (en) * 2000-02-24 2001-08-30 John Zink Company, L.L.C. LOW NOx EMISSIONS BURNER ASSEMBLY AND METHOD FOR REDUCING THE NOx CONTENT OF FURNACE FLUE GAS
EP2314921A2 (de) 2009-10-21 2011-04-27 Fives Pillard Verfahren zum Betrieb eines Heizkessels
WO2015154969A1 (en) * 2014-04-10 2015-10-15 Sofinter S.P.A. Burner
CN106415127A (zh) * 2014-04-10 2017-02-15 索斐特公司 燃烧器
RU2689654C2 (ru) * 2014-04-10 2019-05-28 Софинтер С.П.А. Горелка
CN106415127B (zh) * 2014-04-10 2020-09-15 索斐特公司 燃烧器
CN107606613A (zh) * 2017-09-27 2018-01-19 西安交通大学 燃气空气精确分级内置烟气再循环的低氮旋流燃气燃烧器
CN107606613B (zh) * 2017-09-27 2024-05-24 西安交通大学 燃气空气精确分级内置烟气再循环的低氮旋流燃气燃烧器
CN111853775A (zh) * 2019-04-29 2020-10-30 上海全颉环境设备有限公司 具有内部再循环的燃烧头和包含这种燃烧头的燃烧器
CN115264533A (zh) * 2022-07-24 2022-11-01 哈尔滨工程大学 采用中心点火的天然气同轴分级燃烧室及燃烧方法

Also Published As

Publication number Publication date
DE69809502D1 (de) 2003-01-02
FR2766557A1 (fr) 1999-01-29
EP0893651B1 (de) 2002-11-20
DE69809502T2 (de) 2003-07-17
FR2766557B1 (fr) 1999-10-22

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