EP0636836A2 - Brûleur pour la combustion d'un combustible pulvérulent - Google Patents

Brûleur pour la combustion d'un combustible pulvérulent Download PDF

Info

Publication number
EP0636836A2
EP0636836A2 EP94100539A EP94100539A EP0636836A2 EP 0636836 A2 EP0636836 A2 EP 0636836A2 EP 94100539 A EP94100539 A EP 94100539A EP 94100539 A EP94100539 A EP 94100539A EP 0636836 A2 EP0636836 A2 EP 0636836A2
Authority
EP
European Patent Office
Prior art keywords
air tube
burner
primary
burner according
air pipe
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
EP94100539A
Other languages
German (de)
English (en)
Other versions
EP0636836A3 (fr
EP0636836B1 (fr
Inventor
Alfons Leisse
Michael Streffing
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.)
Hitachi Power Europe GmbH
Original Assignee
Babcock Lentjes Kraftwerkstechnik 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 Babcock Lentjes Kraftwerkstechnik GmbH filed Critical Babcock Lentjes Kraftwerkstechnik GmbH
Publication of EP0636836A2 publication Critical patent/EP0636836A2/fr
Publication of EP0636836A3 publication Critical patent/EP0636836A3/fr
Application granted granted Critical
Publication of EP0636836B1 publication Critical patent/EP0636836B1/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
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus

Definitions

  • the invention relates to a burner for burning dusty fuel with the features of the preamble of patent claim 1.
  • the invention has for its object to design the generic burner so that a more effective and controllable influence on the combustion process is made possible, which is primarily aimed at the chemical-physical relationships of nitrogen oxide formation and reduction in the primary combustion zone.
  • the defined annular gap formed between the flow guide device and the primary air pipe enables a partial flow of the secondary air to intervene in the ignition area of the flame core. In this way, an early ignition of the dusty fuel in the oxygen deficiency zone is supported.
  • the flow guiding device thus causes on the one hand a stabilization of the ignition on the burner and also a limited expansion of the flame in the radial direction.
  • the flow control device acts as an air repellent and thereby delays the mixing reaction between the oxygen in the combustion air and the fuel products. All of this reduces the formation of nitrogen oxide.
  • the partial flow of secondary air flowing through the annular gap can be changed in an advantageous embodiment of the invention with the aid of the displaceable throttle ring.
  • the different ignition behavior of different fuels can be influenced within a wide range.
  • the drawing shows the longitudinal section through a burner.
  • the burner which is used to burn coal dust, contains an oil burner ignition lance 2 which is provided in the longitudinal axis 1 of the burner and is arranged within a core air pipe 3.
  • the oil burner ignition lance 2 carries an oil atomizer nozzle 4 at the front end.
  • a swirl body 5 is arranged in the vicinity of the oil atomizer nozzle 4 within the core air tube 3.
  • the core air tube 3 is surrounded by a primary air tube 6 to form a cylindrical ring channel.
  • the primary air pipe 6 is connected at the rear end via a manifold 7 to a dust line 8, which leads to a mill, not shown.
  • a mixture of primary air or primary gas and coal dust is fed into the primary air pipe 6 via the dust line 8.
  • Swirl insert 9 is arranged, which is connected to a displacement body 10.
  • the displacement body 10 is attached to the core air tube 3.
  • the swirl insert 9, which can be fixed or adjustable, sets the stream of primary air or primary gas and coal dust in a rotational flow. As a result, the dust concentration in the primary air stream is evened out and at the same time pushed outwards. This effect is reinforced by the displacement body 10.
  • the primary air tube 6 is concentrically surrounded by a secondary air tube 12 to form a cylindrical ring channel, and this is in turn concentrically surrounded by a tertiary air tube 13 to form a cylindrical ring channel.
  • a burner throat 14 is connected to the tertiary air pipe 13 and merges into a burner mouth 15 in the wall 16 of a combustion chamber.
  • the burner groove 14 is formed from the tubes from which the wall 16 of the combustion chamber is constructed.
  • the secondary air tube 12 and the tertiary air tube 13 of each individual burner are each connected at the rear end to a spiral inlet housing 17, 18, which are connected to individual air inlet lines 21, 22 receiving flaps 19, 20.
  • the individual air inlet lines 21, 22 supply the secondary air pipe 12 with secondary air and the tertiary air pipe 13 with tertiary air as partial flows of the combustion air.
  • a device for influencing the swirl in the form of a cupboard can be rotated directly in front of the outlet end mounted axial swirl flaps 23, 24 which are adjustable from the outside via a linkage, not shown, and an actuator.
  • These axial swirl flaps 23, 24 impose a swirl of adjustable size on the secondary air and the tertiary air.
  • a permanently set swirl apparatus with a defined swirl intensity can also be used.
  • the primary air pipe 6 is surrounded by a flow guiding device 26 to form an annular gap 25.
  • the width of the annular gap 25 is greater than or equal to 1.5% of the outside diameter of the primary air pipe 6.
  • the direction of flow introduction consists of a cylindrical sleeve and is provided with an inflow segment 27 on the inflow side and with an outflow segment 28 on the outflow side.
  • the inflow segment 27 forms an inflow angle of maximum 45 ° with the burner longitudinal axis
  • the outflow segment 28 forms an outflow angle of maximum 25 ° with the burner longitudinal axis.
  • At least the inflow segment 27 and the cylindrical middle part of the flow guiding device 26 lie within the secondary air pipe 12.
  • the flow guiding device 26 divides the secondary air flowing through the secondary air pipe 12 into two partial flows, one of which flows through the annular gap 25.
  • the flow guide device 26 is centered on the primary air pipe 6 via support segments 29.
  • the support segments 29 can run parallel to the longitudinal axis 1 of the burner, or can preferably be set at an angle to the longitudinal axis of the burner. This angle is 0 ° to 80 °, preferably 45 °.
  • Such an adjustment forces the partial flow flowing through the annular gap 25 to rotate with a high mixing potential.
  • the partial flow of secondary air flowing through the annular gap 25 mixes into the flow of coal dust and primary air, which are swirled by the swirl insert 9 connected to the displacement body 10 and the ring 11 projecting into the primary air pipe 6.
  • the initial flame is generated by the partial flow of secondary air emerging from the annular gap 25 prevented from expanding in the radial direction.
  • the secondary air and the tertiary air mix with the fuel only with a delay, which is favored by the swirl of adjustable size imposed on these air streams.
  • a throttle ring 30 is arranged axially displaceable into the inlet opening of the flow guide device 26.
  • the proportions of the partial flows of the secondary air can be varied and thus the amount of secondary air which is mixed into the fuel products during their pyrolysis can be influenced.
  • the flow guide device 26 projects beyond the primary air pipe 6 and this in turn axially over the tertiary air pipe 13.
  • the part of the flow guiding device 26 projecting beyond the primary air pipe 6 accounts for 25% of the outside diameter of the primary air pipe 6.
  • the outlet cross sections of the tertiary air tube 13, the secondary air tube 12 and the flow guide device 26 are in a fixed relationship to one another, which is influenced by the procedural design of the burner.
  • the outer edges of the tertiary air tube 13, the secondary air tube 12 and the flow guide device 26 lie on a circular cone surface, the tip 31 of which points in the direction of flow.
  • the central angle of the circular cone surface is 40 ° to 60 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
EP94100539A 1993-07-30 1994-01-15 Brûleur pour la combustion d'un combustible pulvérulent Expired - Lifetime EP0636836B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4325643 1993-07-30
DE4325643A DE4325643A1 (de) 1993-07-30 1993-07-30 Brenner zum Verbrennen von staubförmigem Brennstoff

Publications (3)

Publication Number Publication Date
EP0636836A2 true EP0636836A2 (fr) 1995-02-01
EP0636836A3 EP0636836A3 (fr) 1995-08-09
EP0636836B1 EP0636836B1 (fr) 1998-07-29

Family

ID=6494104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94100539A Expired - Lifetime EP0636836B1 (fr) 1993-07-30 1994-01-15 Brûleur pour la combustion d'un combustible pulvérulent

Country Status (9)

Country Link
US (1) US5651320A (fr)
EP (1) EP0636836B1 (fr)
CN (1) CN1074825C (fr)
AT (1) ATE169101T1 (fr)
DE (2) DE4325643A1 (fr)
DK (1) DK0636836T3 (fr)
ES (1) ES2119910T3 (fr)
FI (1) FI104125B (fr)
ZA (1) ZA941358B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0756134A1 (fr) * 1995-07-25 1997-01-29 Babcock Lentjes Kraftwerkstechnik GmbH Procédé et brûleur pour la réduction de la production de NOx de la combustion de poussière de charbon
WO1997047923A1 (fr) * 1996-06-14 1997-12-18 Mitsui Babcock Energy Limited Bruleur allume par un combustible fluide
EP1015814A2 (fr) * 1996-11-12 2000-07-05 THE BABCOCK & WILCOX COMPANY Bruleur ameliore de charbon pulverise

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6145450A (en) * 1996-02-06 2000-11-14 Foster Wheeler Corporation Burner assembly with air stabilizer vane
DK0836048T3 (da) * 1996-10-08 2001-12-17 Enel Spa Brænder
CN1095971C (zh) * 1996-11-12 2002-12-11 孙键 径向大粒度差旋流煤粉燃烧器
DE19854390C2 (de) * 1998-11-25 2001-10-31 Messer Griesheim Gmbh Vorrichtung und Verfahren zur Perliteherstellung
DK175606B1 (da) * 1999-08-06 2004-12-27 Burmeister & Wains As Brænder
US6347937B1 (en) * 2000-01-21 2002-02-19 Ats Spartec Inc. Rotary kiln burner
FR2851032B1 (fr) * 2003-02-06 2005-11-11 Pillard Chauffage Perfectionnement au bruleur comportant un stabilisateur de flamme et au moins deux conduits d'air primaire, axial et en rotation, concentriques autour d'au moins une alimentation en combustible
AU2005229668B2 (en) * 2004-11-04 2008-03-06 Babcock-Hitachi K.K. Overfiring air port, method for manufacturing air port, boiler, boiler facility, method for operating boiler facility and method for improving boiler facility
FR2887597B1 (fr) * 2005-06-27 2010-04-30 Egci Pillard Conduite annulaire et bruleur comportant une telle conduite
US7430970B2 (en) * 2005-06-30 2008-10-07 Larue Albert D Burner with center air jet
DE102005046831A1 (de) * 2005-09-29 2007-04-12 Küppersbusch Großküchentechnik GmbH Staubfeuerungsvorrichtung
CN200940831Y (zh) * 2006-05-17 2007-08-29 杭州意能电力技术有限公司 一种带隔板的煤粉燃烧器
US8113824B2 (en) * 2006-06-01 2012-02-14 Babcock & Wilcox Power Generation Group, Inc. Large diameter mid-zone air separation cone for expanding IRZ
PL2138765T3 (pl) * 2006-08-16 2016-09-30 Sposób spalania
AU2006203560B2 (en) * 2006-08-17 2011-12-01 The Babcock & Wilcox Company Burner with center air jet
WO2010034124A1 (fr) * 2008-09-29 2010-04-01 New Brunswick Power Generation Corporation Système et procédé pour brûler du combustible
US20100275824A1 (en) * 2009-04-29 2010-11-04 Larue Albert D Biomass center air jet burner
CN101644431B (zh) * 2009-08-31 2011-02-02 中国计量学院 具有自稳能力的三级配风低NOx煤粉燃烧器
CN102086415B (zh) * 2009-12-03 2014-08-20 通用电气公司 进料装置及进料方法
CN101865462B (zh) * 2010-06-09 2012-01-18 清华大学 一种弱旋一次风多级分离旋流燃烧器
CN103228989A (zh) * 2010-11-26 2013-07-31 贝卡尔特燃烧技术股份有限公司 带有二次轴流元件的燃烧器
DE102011018697A1 (de) * 2011-04-26 2012-10-31 Babcock Borsig Steinmüller Gmbh Brenner für partikelförmigen Brennstoff
CN102269404A (zh) * 2011-06-30 2011-12-07 哈尔滨工业大学 一种多通道旋流煤粉燃烧器
US20140157790A1 (en) * 2012-12-10 2014-06-12 Zilkha Biomass Power Llc Combustor assembly and methods of using same
CN103411215B (zh) * 2013-08-26 2016-01-27 中节环立为（武汉）能源技术有限公司 多向射流式旋流煤粉燃烧器
JP6632226B2 (ja) * 2015-06-12 2020-01-22 三菱日立パワーシステムズ株式会社 バーナ、燃焼装置、ボイラ及びバーナの制御方法
DE102015111586A1 (de) 2015-07-16 2017-01-19 Mitsubishi Hitachi Power Systems Europe Gmbh Kohlenstaubbrenner mit elektrisch beheizter Brennstoffdüse
DE102015111587A1 (de) 2015-07-16 2017-01-19 Mitsubishi Hitachi Power Systems Europe Gmbh Brenner und Verfahren für eine Zündfeuerung mit staubförmigem Brennstoff
DE102015111585A1 (de) 2015-07-16 2017-01-19 Mitsubishi Hitachi Power Systems Europe Gmbh Kohlenstaubbrenner mit einstückiger, elektrisch beheizter Brennstoffdüse
EP3267104B1 (fr) 2016-07-08 2020-05-20 Steinmüller Engineering GmbH Brûleur et procédé d'optimisation de la combustion de combustibles particulaires gros, en particulier de la biomasse

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL100711C (fr) * 1940-03-27 1900-01-01
EP0445938A1 (fr) * 1990-03-07 1991-09-11 Hitachi, Ltd. Brûleur à charbon pulvérisé, chaudière au charbon pulvérisé et procédé pour la combustion de charbon pulvérisé

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1526194A1 (de) * 1965-09-18 1970-01-08 Steinmueller Gmbh L & C Verfahren zum Betreiben einer Stufenschmelzkammerfeuerung
SU427211A1 (ru) * 1972-04-29 1974-05-05 Пылеугольная горелка
DE3140798C2 (de) * 1981-10-14 1983-12-22 Rheinisch-Westfälisches Elektrizitätswerk AG, 4300 Essen Zündbrenner für eine Kraftwerkskesselfeuerung
FR2581444B1 (fr) * 1985-05-03 1988-11-10 Charbonnages De France Procede pour la combustion de combustibles fluides et bruleur a turbulence adapte a sa mise en oeuvre
JPH0754162B2 (ja) * 1986-05-26 1995-06-07 株式会社日立製作所 低ＮＯｘ燃焼用バ−ナ
JP2526236B2 (ja) * 1987-02-27 1996-08-21 バブコツク日立株式会社 超低ＮＯｘ燃焼装置
US4836772A (en) * 1988-05-05 1989-06-06 The Babcock & Wilcox Company Burner for coal, oil or gas firing
US5113771A (en) * 1991-08-14 1992-05-19 The United States Of America As Represented By The United States Department Of Energy Pulverized coal fuel injector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL100711C (fr) * 1940-03-27 1900-01-01
EP0445938A1 (fr) * 1990-03-07 1991-09-11 Hitachi, Ltd. Brûleur à charbon pulvérisé, chaudière au charbon pulvérisé et procédé pour la combustion de charbon pulvérisé

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0756134A1 (fr) * 1995-07-25 1997-01-29 Babcock Lentjes Kraftwerkstechnik GmbH Procédé et brûleur pour la réduction de la production de NOx de la combustion de poussière de charbon
WO1997047923A1 (fr) * 1996-06-14 1997-12-18 Mitsui Babcock Energy Limited Bruleur allume par un combustible fluide
EP1015814A2 (fr) * 1996-11-12 2000-07-05 THE BABCOCK & WILCOX COMPANY Bruleur ameliore de charbon pulverise
EP1015814B1 (fr) * 1996-11-12 2007-01-10 THE BABCOCK & WILCOX COMPANY Bruleur ameliore de charbon pulverise

Also Published As

Publication number Publication date
FI941806A (fi) 1995-01-31
EP0636836A3 (fr) 1995-08-09
FI104125B1 (fi) 1999-11-15
CN1098180A (zh) 1995-02-01
US5651320A (en) 1997-07-29
FI941806A0 (fi) 1994-04-19
DE4325643A1 (de) 1995-02-02
FI104125B (fi) 1999-11-15
ATE169101T1 (de) 1998-08-15
CN1074825C (zh) 2001-11-14
ZA941358B (en) 1994-09-22
EP0636836B1 (fr) 1998-07-29
ES2119910T3 (es) 1998-10-16
DK0636836T3 (da) 1999-04-26
DE59406540D1 (de) 1998-09-03

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