EP1892470B1 - Verfahren zur Minderung von NOx-Emissionen in einem Kohlenstaubbrenner - Google Patents

Verfahren zur Minderung von NOx-Emissionen in einem Kohlenstaubbrenner Download PDF

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Publication number
EP1892470B1
EP1892470B1 EP06254290A EP06254290A EP1892470B1 EP 1892470 B1 EP1892470 B1 EP 1892470B1 EP 06254290 A EP06254290 A EP 06254290A EP 06254290 A EP06254290 A EP 06254290A EP 1892470 B1 EP1892470 B1 EP 1892470B1
Authority
EP
European Patent Office
Prior art keywords
gas
burner
zone
providing
oxygen
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.)
Active
Application number
EP06254290A
Other languages
English (en)
French (fr)
Other versions
EP1892470A1 (de
EP1892470B8 (de
Inventor
Albert D. Larue
William J. Kahle
Alan N. Sayre
Hamid Sarv
Daniel R. Rowley
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.)
Babcock and Wilcox Power Generation Group Inc
Original Assignee
Babcock and Wilcox Co
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
Priority to DK09170949.3T priority Critical patent/DK2138765T3/en
Priority to EP06254290A priority patent/EP1892470B8/de
Priority to ES09170949.3T priority patent/ES2576008T3/es
Priority to PL09151678T priority patent/PL2051005T3/pl
Priority to DK06254290.7T priority patent/DK1892470T3/da
Priority to PL06254290T priority patent/PL1892470T3/pl
Priority to EP09151678.1A priority patent/EP2051005B1/de
Application filed by Babcock and Wilcox Co filed Critical Babcock and Wilcox Co
Priority to AT06254290T priority patent/ATE497126T1/de
Priority to ES06254290T priority patent/ES2358273T3/es
Priority to ES09151678.1T priority patent/ES2636594T3/es
Priority to EP09170949.3A priority patent/EP2138765B1/de
Priority to DE602006019860T priority patent/DE602006019860D1/de
Priority to PL09170949.3T priority patent/PL2138765T3/pl
Publication of EP1892470A1 publication Critical patent/EP1892470A1/de
Publication of EP1892470B1 publication Critical patent/EP1892470B1/de
Application granted granted Critical
Publication of EP1892470B8 publication Critical patent/EP1892470B8/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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

  • Pulverized coal and primary air (PA/PC) 1 pass through the burner elbow 2.
  • the pulverized coal generally travels along the outer radius of elbow 2 and concentrates into a stream along the outer radius at the elbow exit.
  • the pulverized coal enters first annular zone 11 and encounters a deflector 4 which redirects the coal stream into plug 5 and disperses the coal.
  • Axial pipe 6 is attached to the downstream side of plug 5.
  • First annular pipe 3 expands in section 3A to form a larger diameter section 3B.
  • the dispersed coal travels along first annular zone 11 wherein bars and chevrons 7 provide more uniform distribution of the pulverized coal before exiting the first annular zone 11 as a fuel jet.
  • Wedged shaped pieces 9A and 9B ( Fig. 3 ) provide a more contoured flow path for the PA/PC 1 as it travels past feeder duct 9.

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)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Claims (8)

  1. Verfahren zum Reduzieren von NOx-Emissionen in einem Kohlenstaubbrenner mit den Stufen:
    Bereitstellen eines Vier-Zonen-Brenners, wobei die innerste Zone eine axiale Zone (25) ist, die von einer ersten Ringzone (11) konzentrisch umgeben ist, welche selbst von einer zweiten Ringzone (16) konzentrisch umgeben ist, welche selbst von einer dritten Ringzone (17) konzentrisch umgeben ist,
    Bereitstellen eines ersten Sauerstoff enthaltenden Gases in der axialen Zone,
    Bereitstellen eines Kohlenstaub umfassenden Trägergases in der ersten Ringzone,
    Bereitstellen eines zweiten Sauerstoff enthaltenden Gases in der zweiten Ringzone,
    Bereitstellen eines dritten Sauerstoff enthaltenden Gases in der dritten Ringzone,
    Bereitstellen des Trägergases mit einer Geschwindigkeit, die größer als etwa 15 m/s (3000 ft/min) ist, in dem Brenner
    Bereitstellen des ersten Gases mit einer Geschwindigkeit, die größer als die des Trägergases ist, in dem Brenner,
    Bereitstellen des zweiten Gases mit einer Geschwindigkeit, die kleiner als die des Trägergases ist, in dem Brenner,
    Bereitstellen des dritten Gases mit einer Geschwindigkeit, die größer als die des Trägergases ist, in dem Brenner,
    Verbrennen des Kohlenstaubs in dem Trägergasstrom aus dem inneren des Stroms heraus mit dem ersten Gas,
    Verbrennen des Kohlenstaubs in dem Trägergasstrom mit dem zweiten Gas und dem dritten Gas von außen,
    Nutzen des Geschwindigkeitsgradienten zwischen den vier Ringzonen, um eine Rezirkulationszone innerhalb einer Brennerflamme zu erzeugen, und
    Unterdrücken der NOx-Bildung und Beschleunigung der Verbrennung durch Rezirkulation von unverbrannter Kohle und Sauerstoff in die Brennerflamme.
  2. Verfahren nach Anspruch 1, welches weiterhin das Verwirbeln des zweiten Gases, bevor es die Brennerflamme erreicht, umfasst.
  3. Verfahren nach Anspruch 1 oder Anspruch 2, welches weiterhin das Verwirbeln des Trägergases vor der Verbrennung umfasst.
  4. Verfahren nach einem der Ansprüche 1 bis 3, welches weiterhin das Verwirbeln des dritten Gases vor der Verbrennung umfasst.
  5. Verfahren nach einem der Ansprüche 1 bis 4, welches weiterhin das Verwirbeln des ersten Gases vor der Verbrennung umfasst.
  6. Verfahren nach einem der Ansprüche 1 bis 5, wobei das erste Gas mehr als 21 Prozent Sauerstoff umfasst.
  7. Verfahren nach einem der Ansprüche 1 bis 6, wobei das zweite Gas mehr als 21 Prozent Sauerstoff umfasst.
  8. Verfahren nach einem der Ansprüche 1 bis 7, wobei das dritte Gas mehr als 21 Prozent Sauerstoff umfasst.
EP06254290A 2006-08-16 2006-08-16 Verfahren zur Minderung von NOx-Emissionen in einem Kohlenstaubbrenner Active EP1892470B8 (de)

Priority Applications (13)

Application Number Priority Date Filing Date Title
ES09170949.3T ES2576008T3 (es) 2006-08-16 2006-08-16 Método de combustión
PL09151678T PL2051005T3 (pl) 2006-08-16 2006-08-16 Palnik o środkowym strumieniu powietrza
DK06254290.7T DK1892470T3 (da) 2006-08-16 2006-08-16 Fremgangsmåde til mindskelse af NOx-emissioner i en pulveriseret-kul-brænder
PL06254290T PL1892470T3 (pl) 2006-08-16 2006-08-16 Sposób zmniejszania emisji NOx w palniku na pył węglowy
EP09151678.1A EP2051005B1 (de) 2006-08-16 2006-08-16 Brenner mit zentralem Luftstrahl
ES09151678.1T ES2636594T3 (es) 2006-08-16 2006-08-16 Quemador de chorro de aire central
AT06254290T ATE497126T1 (de) 2006-08-16 2006-08-16 Verfahren zur minderung von nox-emissionen in einem kohlenstaubbrenner
ES06254290T ES2358273T3 (es) 2006-08-16 2006-08-16 PROCEDIMIENTO DE REDUCCIÓN DE EMISIONES DE NOx EN UN QUEMADOR DE CARBÓN PULVERIZADO.
DK09170949.3T DK2138765T3 (en) 2006-08-16 2006-08-16 Method of combustion
EP09170949.3A EP2138765B1 (de) 2006-08-16 2006-08-16 Verbrennungsverfahren
DE602006019860T DE602006019860D1 (de) 2006-08-16 2006-08-16 Verfahren zur Minderung von NOx-Emissionen in einem Kohlenstaubbrenner
EP06254290A EP1892470B8 (de) 2006-08-16 2006-08-16 Verfahren zur Minderung von NOx-Emissionen in einem Kohlenstaubbrenner
PL09170949.3T PL2138765T3 (pl) 2006-08-16 2006-08-16 Sposób spalania

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06254290A EP1892470B8 (de) 2006-08-16 2006-08-16 Verfahren zur Minderung von NOx-Emissionen in einem Kohlenstaubbrenner

Related Child Applications (4)

Application Number Title Priority Date Filing Date
EP09170949.3A Division EP2138765B1 (de) 2006-08-16 2006-08-16 Verbrennungsverfahren
EP09151678.1A Division EP2051005B1 (de) 2006-08-16 2006-08-16 Brenner mit zentralem Luftstrahl
EP09151678.1 Division-Into 2009-01-29
EP09170949.3 Division-Into 2009-09-22

Publications (3)

Publication Number Publication Date
EP1892470A1 EP1892470A1 (de) 2008-02-27
EP1892470B1 true EP1892470B1 (de) 2011-01-26
EP1892470B8 EP1892470B8 (de) 2011-03-09

Family

ID=37564416

Family Applications (3)

Application Number Title Priority Date Filing Date
EP09151678.1A Active EP2051005B1 (de) 2006-08-16 2006-08-16 Brenner mit zentralem Luftstrahl
EP06254290A Active EP1892470B8 (de) 2006-08-16 2006-08-16 Verfahren zur Minderung von NOx-Emissionen in einem Kohlenstaubbrenner
EP09170949.3A Active EP2138765B1 (de) 2006-08-16 2006-08-16 Verbrennungsverfahren

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09151678.1A Active EP2051005B1 (de) 2006-08-16 2006-08-16 Brenner mit zentralem Luftstrahl

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP09170949.3A Active EP2138765B1 (de) 2006-08-16 2006-08-16 Verbrennungsverfahren

Country Status (6)

Country Link
EP (3) EP2051005B1 (de)
AT (1) ATE497126T1 (de)
DE (1) DE602006019860D1 (de)
DK (2) DK2138765T3 (de)
ES (3) ES2358273T3 (de)
PL (3) PL1892470T3 (de)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2933060B1 (de) * 1979-08-16 1980-10-30 Steinmueller Gmbh L & C Brenner zur Verbrennung von staubfoermigen Brennstoffen
US4924784A (en) * 1984-02-27 1990-05-15 International Coal Refining Company Firing of pulverized solvent refined coal
DE3535873A1 (de) * 1985-10-08 1987-04-09 Theo Dipl Ing Burkard Verfahren zur no(pfeil abwaerts)x(pfeil abwaerts)-armen verbrennung mittels eines radikale bildenden mediums
DE69120441T2 (de) * 1990-03-07 1997-01-23 Hitachi Ltd Kohlenstaubbrenner, Kohlenstaubkessel und Verfahren zum Verbrennen von Kohlenstaub
US5199355A (en) 1991-08-23 1993-04-06 The Babcock & Wilcox Company Low nox short flame burner
DE4325643A1 (de) * 1993-07-30 1995-02-02 Lentjes Kraftwerkstechnik Brenner zum Verbrennen von staubförmigem Brennstoff
US5697306A (en) 1997-01-28 1997-12-16 The Babcock & Wilcox Company Low NOx short flame burner with control of primary air/fuel ratio for NOx reduction
PL206626B1 (pl) * 2000-08-04 2010-09-30 Babcock Hitachi Kk Palnik do paliwa stałego oraz sposób spalania za pomocą palnika do paliwa stałego
ATE365891T1 (de) 2001-01-18 2007-07-15 Alstom Power Boiler Gmbh Brenner zur verbrennung von staubförmigem brennstoff
AU2003237815B2 (en) * 2002-05-15 2008-07-17 Praxair Technology, Inc. Low nox combustion

Also Published As

Publication number Publication date
DE602006019860D1 (de) 2011-03-10
DK1892470T3 (da) 2011-03-21
ATE497126T1 (de) 2011-02-15
DK2138765T3 (en) 2016-07-25
EP2051005A3 (de) 2010-06-09
EP2138765A3 (de) 2010-09-22
ES2358273T3 (es) 2011-05-09
EP2051005A2 (de) 2009-04-22
PL2051005T3 (pl) 2017-10-31
PL2138765T3 (pl) 2016-09-30
EP2138765B1 (de) 2016-03-30
EP1892470A1 (de) 2008-02-27
EP2138765A2 (de) 2009-12-30
EP2051005B1 (de) 2017-06-14
PL1892470T3 (pl) 2011-07-29
EP1892470B8 (de) 2011-03-09
ES2576008T3 (es) 2016-07-04
ES2636594T3 (es) 2017-10-06

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