EP0636836B1 - Brenner zum Verbrennen von staubförmigem Brennstoff - Google Patents
Brenner zum Verbrennen von staubförmigem Brennstoff Download PDFInfo
- Publication number
- EP0636836B1 EP0636836B1 EP94100539A EP94100539A EP0636836B1 EP 0636836 B1 EP0636836 B1 EP 0636836B1 EP 94100539 A EP94100539 A EP 94100539A EP 94100539 A EP94100539 A EP 94100539A EP 0636836 B1 EP0636836 B1 EP 0636836B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air pipe
- primary
- burner
- burner according
- primary air
- 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
Links
Images
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 Claim 1.
- a burner is known from NL-C-100 711.
- the invention has for its object the generic To design burners so that a more effective and controllable influence on the combustion process is made possible, which is primarily based on the chemical-physical Relationships between nitrogen oxide formation and reduction in the primary combustion zone is aligned.
- the one between the flow control device and the primary air pipe A defined, defined annular gap enables a partial flow the secondary air, in the ignition area of the flame core to get involved. In this way, an early ignition of the dusty fuel in the oxygen deficiency zone supported.
- the flow guide thus causes on the one hand a stabilization of the ignition on the burner and in addition, an extent limited in the radial direction the flame.
- the flow control device acts 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 in an advantageous embodiment of the invention using the movable throttle ring can be changed. This can do that different ignition behavior of different fuels can be influenced within a wide range.
- FIG. 1 An embodiment of the invention is in the drawing shown and is explained in more detail below.
- the drawing shows the longitudinal section through a burner.
- the burner which is used to burn coal dust, contains an oil burner ignition lance provided in the burner longitudinal axis 1 2, which is arranged within a core air tube 3.
- the Oil burner ignition lance 2 carries one at the front end Oil atomizer nozzle 4.
- a swirl body 5 is arranged within the core air tube 3.
- the core air tube 3 is cylindrical to form Ring channel surrounded by a primary air tube 6.
- the Primary air tube 6 is at the rear end via an elbow 7 connected to a dust line 8, which is not a shown mill leads.
- a mixture is created via the dust line 8 from primary air or primary gas and coal dust into the Primary air pipe 6 fed.
- In the primary air pipe 6 is in an axial distance from the exit end Swirl insert 9 arranged with a displacement body 10 connected is.
- the displacement body 10 is on the Core air tube 3 attached.
- the primary air tube 6 is concentric to form a cylindrical ring channel from a secondary air tube 12 and this in turn forms a cylindrical ring channel surrounded concentrically by a tertiary air tube 13.
- a tertiary air tube 13 To the Tertiary air tube 13 is connected to a burner throat 14 into a burner mouth 15 in the wall 16 of a combustion chamber transforms.
- the burner throat 14 is formed from the tubes which the wall 16 of the furnace is constructed.
- the secondary air tube 12 and the tertiary air tube 13 each individual burners are at the rear end with a spiral inlet housing 17, 18 connected to the Butterfly valves 19, 20 receiving individual air inlet lines 21, 22 are connected.
- the individual air inlet lines 21, 22 supply the secondary air pipe 12 with secondary air and that Tertiary air tube 13 with tertiary air as partial flows of Combustion air.
- the secondary air tube 12 and the tertiary air tube 13 is a facility for each immediately before the exit end Influencing the twist in the form of a cupboard made rotatable mounted axial swirl flaps 23, 24 arranged over a Linkage not shown and an actuator from the outside are adjustable. Through these axial swirl flaps 23, 24 the secondary air and the tertiary air a swirl of adjustable Size imposed. In a burner in which only Coal dust of constant composition and quality a fixed set can also be burned Swirl apparatus with a defined swirl intensity can be used.
- the primary air pipe 6 is under formation an annular gap 25 from a flow guide device 26 surround.
- 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 Flow direction consists of a cylindrical sleeve and is on the upstream side with an upstream segment 27 and provided on the outflow side with an outflow segment 28.
- the Inflow segment 27 forms one with the burner longitudinal axis Inflow angle of maximum 45 °
- the outflow segment 28 forms with the burner longitudinal axis an outflow angle of maximum 25 °.
- At least the inflow segment 27 and the cylindrical middle part the flow guide 26 are within the Secondary air pipe 12.
- the flow guide 26 divides the secondary air flowing through the secondary air pipe 12 in two Partial flows, one of which flows through the annular gap 25.
- the flow guiding device 26 is open via support segments 29 the primary air pipe 6 centered.
- the support segments 29 can run parallel to the burner longitudinal axis 1, or preferably be made at an angle to the longitudinal axis of the burner. This Angle is 0 ° to 80 °, preferably 45 °.
- This Angle is 0 ° to 80 °, preferably 45 °.
- a throttle ring 30 axially into the Inlet opening of the flow guide 26 is slidable arranged. By closing or releasing the Annular gap 25 with the help of the throttle ring 30 can the shares the partial flows of the secondary air vary and thus the Secondary air flow can be influenced in the Fuel products are mixed during their pyrolysis.
- the flow guide device 26 projects beyond the primary air pipe 6 and this in turn the tertiary air tube 13 in the axial direction. That part of the primary air pipe 6 which projects beyond Flow guide 26 makes up 25% of the outside diameter of the Primary air tube 6 out.
- 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 each other by the procedural Design of the burner is affected. In the best case lie the outer edges of the tertiary air tube 13, the Secondary air tube 12 and the flow guide 26 a circular conical surface, the tip 31 in the direction of flow points.
- 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)
Description
Claims (12)
- Brenner zum Verbrennen von staubförmigem Brennstoff mit in konzentrische Teilströme aufgeteilter Verbrennungsluft, wobei der Brenner ein Primärluft bzw. Primärgas und Brennstoff führendes Primärluftrohr (6) aufweist, das von einem Sekundärluft führenden Sekundärluftrohr (12) umgeben ist, wobei das Primärluftrohr (6) an dem austrittsseitigen Ende innerhalb des Sekundärluftrohres (12) unter Bildung eines Ringspaltes (25) von einer beidseitig offenen, von Sekundärluft durchströmten Strömungsleiteinrichtung (26) umgeben ist, die das Primärluftrohr (6) in axialer Richtung um einen Betrag überragt, dadurch gekennzeichnet, daß der Betrag bis zu 25 % des Außendurchmessers des Primärluftrohres (6) entspricht, daß die Breite des Ringspaltes (25) mindestens gleich 1,5 % des Außendurchmessers des Primärluftrohres (6) ist und daß auf dem Primärluftrohr (6) ein Drosselring (30) angeordnet ist, der axial bis in den Einlaufquerschnitt der Strömungsleiteinrichtung (26) verschiebbar ist.
- Brenner nach Anspruch 1, dadurch gekennzeichnet, daß die Strömungsleiteinrichtung (26) auf dem Primärluftrohr(6) über Abstützsegmente (29) abgestützt ist, die in Strömungsrichtung der Sekundärluft in einem Winkel von maximal 80° angeordnet sind.
- Brenner nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Strömungsleiteinrichtung (26) mit einem Abströmsegment (28) versehen ist, das mit der Brennerlängsachse (1) einen Abströmwinkel von maximal 25° bildet.
- Brenner nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Strömungsleiteinrichtung (26) mit einem Anströmsegment (27) versehen ist, das mit der Brennerlängsachse (1) einen Anströmwinkel von maximal 45° bildet.
- Brenner nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß in dem Sekundärluftrohr (12) stromaufwärts von der Strömungsleiteinrichtung (26) ein Drallklappengeschränk angeordnet ist.
- Brenner nach Anspruch 5, dadurch gekennzeichnet, daß das Drallklappengeschränk verstellbar ist.
- Brenner nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß innerhalb des Primärluftrohres (6) ein eine Ölzündbrennerlanze (2) aufnehmendes Kernluftrohr (3) angeordnet ist und daß innerhalb des Primärluftrohres (6) ein fester oder verstellbarer Dralleinsatz (9) angeordnet ist, der mit einem auf dem Kernluftrohr (3) befestigten Verdrängungskörper(10) verbunden ist.
- Brenner nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß an dem austrittsseitigen Ende des Primärluftrohres (6) eine Vorrichtung zum Aufreißen der Staubkonzentration im Randbereich des Primärluftrohres (6) angeordnet ist.
- Brenner nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das Sekundärluftrohr (12) von einem Tertiärluft führenden Tertiärluftrohr (13) umgeben ist und daß das Sekundärluftrohr (12) das Tertiärluftrohr (13) in axialer Richtung überragt.
- Brenner nach Anspruch 9, dadurch gekennzeichnet, daß in dem Tertiärluftrohr (13) ein fester oder verstellbarer Drallkörper angeordnet ist.
- Brenner nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Strömungsleiteinrichtung (26) das Sekundärluftrohr (12) in axialer Richtung überragt.
- Brenner nach den Ansprüchen 8 und 11, dadurch gekennzeichnet, daß die Außenkanten des Tertiärluftrohres (13) des Sekundärluftrohres (12) und der Strömungsleiteinrichtung (26) auf einer Kreiskegelfläche liegen, deren Spitze (31) in Strömungsrichtung weist und deren Zentriwinkel 40° bis 60° beträgt.
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 EP0636836A2 (de) | 1995-02-01 |
EP0636836A3 EP0636836A3 (de) | 1995-08-09 |
EP0636836B1 true EP0636836B1 (de) | 1998-07-29 |
Family
ID=6494104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94100539A Expired - Lifetime EP0636836B1 (de) | 1993-07-30 | 1994-01-15 | Brenner zum Verbrennen von staubförmigem Brennstoff |
Country Status (9)
Country | Link |
---|---|
US (1) | US5651320A (de) |
EP (1) | EP0636836B1 (de) |
CN (1) | CN1074825C (de) |
AT (1) | ATE169101T1 (de) |
DE (2) | DE4325643A1 (de) |
DK (1) | DK0636836T3 (de) |
ES (1) | ES2119910T3 (de) |
FI (1) | FI104125B1 (de) |
ZA (1) | ZA941358B (de) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19527083A1 (de) * | 1995-07-25 | 1997-01-30 | Lentjes Kraftwerkstechnik | Verfahren und Brenner zur Verminderung der Bildung von NO¶x¶ bei der Verbrennung von Kohlenstaub |
US6145450A (en) * | 1996-02-06 | 2000-11-14 | Foster Wheeler Corporation | Burner assembly with air stabilizer vane |
GB9612479D0 (en) * | 1996-06-14 | 1996-08-14 | Mitsui Babcock Energy Limited | Fluent fuel fired burner |
EP0836049B1 (de) * | 1996-10-08 | 2001-12-12 | Ansaldo Caldaie S.P.A. | Kohlenstaubeinspritzdüse |
US5829369A (en) * | 1996-11-12 | 1998-11-03 | The Babcock & Wilcox Company | Pulverized coal burner |
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 |
EP2051005B1 (de) * | 2006-08-16 | 2017-06-14 | The Babcock & Wilcox Company | Brenner mit zentralem Luftstrahl |
AU2006203560B2 (en) * | 2006-08-17 | 2011-12-01 | The Babcock & Wilcox Company | Burner with center air jet |
WO2010034124A1 (en) * | 2008-09-29 | 2010-04-01 | New Brunswick Power Generation Corporation | System and method for burning fuel |
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 |
DE102015111585A1 (de) | 2015-07-16 | 2017-01-19 | Mitsubishi Hitachi Power Systems Europe Gmbh | Kohlenstaubbrenner mit einstückiger, elektrisch beheizter Brennstoffdüse |
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 |
EP3267104B1 (de) | 2016-07-08 | 2020-05-20 | Steinmüller Engineering GmbH | Brenner und verfahren zur optimierten verbrennung grober, partikelförmiger brennstoffe, insbesondere biomasse |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE440745A (de) * | 1940-03-27 | |||
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 |
EP0445938B1 (de) * | 1990-03-07 | 1996-06-26 | Hitachi, Ltd. | Kohlenstaubbrenner, Kohlenstaubkessel und Verfahren zum Verbrennen von Kohlenstaub |
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 |
-
1993
- 1993-07-30 DE DE4325643A patent/DE4325643A1/de not_active Withdrawn
-
1994
- 1994-01-15 ES ES94100539T patent/ES2119910T3/es not_active Expired - Lifetime
- 1994-01-15 DE DE59406540T patent/DE59406540D1/de not_active Expired - Lifetime
- 1994-01-15 DK DK94100539T patent/DK0636836T3/da active
- 1994-01-15 AT AT94100539T patent/ATE169101T1/de active
- 1994-01-15 EP EP94100539A patent/EP0636836B1/de not_active Expired - Lifetime
- 1994-02-28 ZA ZA941358A patent/ZA941358B/xx unknown
- 1994-04-19 FI FI941806A patent/FI104125B1/fi not_active IP Right Cessation
- 1994-04-20 CN CN94104287A patent/CN1074825C/zh not_active Expired - Fee Related
-
1995
- 1995-01-06 US US08/707,410 patent/US5651320A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0636836A3 (de) | 1995-08-09 |
CN1098180A (zh) | 1995-02-01 |
ATE169101T1 (de) | 1998-08-15 |
US5651320A (en) | 1997-07-29 |
ZA941358B (en) | 1994-09-22 |
EP0636836A2 (de) | 1995-02-01 |
DK0636836T3 (da) | 1999-04-26 |
ES2119910T3 (es) | 1998-10-16 |
FI104125B (fi) | 1999-11-15 |
DE59406540D1 (de) | 1998-09-03 |
FI104125B1 (fi) | 1999-11-15 |
FI941806A (fi) | 1995-01-31 |
DE4325643A1 (de) | 1995-02-02 |
CN1074825C (zh) | 2001-11-14 |
FI941806A0 (fi) | 1994-04-19 |
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