EP1892470B1 - Procédé pour réduire les émissions de NOx dans un brûleur à charbon pulvérisé - Google Patents

Procédé pour réduire les émissions de NOx dans un brûleur à charbon pulvérisé 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
German (de)
English (en)
Other versions
EP1892470B8 (fr
EP1892470A1 (fr
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 PL09151678T priority Critical patent/PL2051005T3/pl
Priority to EP09151678.1A priority patent/EP2051005B1/fr
Priority to PL09170949.3T priority patent/PL2138765T3/pl
Priority to ES09151678.1T priority patent/ES2636594T3/es
Priority to EP09170949.3A priority patent/EP2138765B1/fr
Priority to ES06254290T priority patent/ES2358273T3/es
Priority to DK06254290.7T priority patent/DK1892470T3/da
Priority to DK09170949.3T priority patent/DK2138765T3/en
Priority to PL06254290T priority patent/PL1892470T3/pl
Priority to EP06254290A priority patent/EP1892470B8/fr
Priority to DE602006019860T priority patent/DE602006019860D1/de
Priority to ES09170949.3T priority patent/ES2576008T3/es
Application filed by Babcock and Wilcox Co filed Critical Babcock and Wilcox Co
Priority to AT06254290T priority patent/ATE497126T1/de
Publication of EP1892470A1 publication Critical patent/EP1892470A1/fr
Application granted granted Critical
Publication of EP1892470B1 publication Critical patent/EP1892470B1/fr
Publication of EP1892470B8 publication Critical patent/EP1892470B8/fr
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. Procédé de réduction des émissions de NOx dans un brûleur à charbon pulvérisé comprenant les étapes consistant à :
    fournir un brûleur à quatre zones, dans lequel la zone la plus à l'intérieur est une zone axiale (25) entourée concentriquement par une première zone annulaire (11), qui est à son tour entourée concentriquement par une deuxième zone annulaire (16), qui est à son tour entourée concentriquement par une troisième zone annulaire (17);
    fournir à la zone axiale un premier gaz contenant de l'oxygène ;
    fournir à la première zone annulaire un gaz porteur contenant un charbon pulvérisé;
    fournir à la deuxième zone annulaire un deuxième gaz contenant de l'oxygène;
    fournir à la troisième zone annulaire un troisième gaz contenant de l'oxygène;
    fournir au brûleur le gaz porteur à une vitesse supérieure à 15 m/s (3000 ft/min) environ ;
    fournir au brûleur le premier gaz à une vitesse supérieure à celle du gaz porteur;
    fournir au brûleur le deuxième gaz à une vitesse inférieure à celle du gaz porteur;
    fournir au brûleur le troisième gaz à une vitesse supérieure à celle du gaz porteur;
    assurer la combustion du charbon pulvérisé dans le flux de gaz porteur depuis l'intérieur du flux avec le premier gaz ;
    assurer la combustion du charbon pulvérisé dans le flux de gaz porteur depuis l'extérieur avec le deuxième gaz et le troisième gaz;
    utiliser le gradient de vitesse entre les quatre zones annulaires pour créer une zone de recirculation à l'intérieur d'une flamme de brûleur ; et
    supprimer la formation de NOx et accélérer la combustion par recirculation du charbon non consumé et de l'oxygène dans la flamme du brûleur.
  2. Procédé selon la revendication 1, consistant en outre à faire tourbillonner le deuxième gaz avant qu'il atteigne la flamme du brûleur.
  3. Procédé selon la revendication 1 ou la revendication 2, consistant en outre à faire tourbillonner le gaz porteur avant la combustion.
  4. Procédé selon l'une quelconque des revendications 1 à 3, consistant en outre à faire tourbillonner le troisième gaz avant la combustion.
  5. Procédé selon l'une quelconque des revendications 1 à 4, consistant en outre à faire tourbillonner le premier gaz avant la combustion.
  6. Procédé selon l'une quelconque des revendications 1 à 5, dans lequel le premier gaz contient plus de 21 % d'oxygène.
  7. Procédé selon l'une quelconque des revendications 1 à 6, dans lequel le deuxième gaz contient plus de 21 % d'oxygène.
  8. Procédé selon l'une quelconque des revendications 1 à 7, dans lequel le troisième gaz contient plus de 21 % d'oxygène.
EP06254290A 2006-08-16 2006-08-16 Procédé pour réduire les émissions de NOx dans un brûleur à charbon pulvérisé Active EP1892470B8 (fr)

Priority Applications (13)

Application Number Priority Date Filing Date Title
PL09170949.3T PL2138765T3 (pl) 2006-08-16 2006-08-16 Sposób spalania
ES09151678.1T ES2636594T3 (es) 2006-08-16 2006-08-16 Quemador de chorro de aire central
EP09170949.3A EP2138765B1 (fr) 2006-08-16 2006-08-16 Procédé de combustion
ES06254290T ES2358273T3 (es) 2006-08-16 2006-08-16 PROCEDIMIENTO DE REDUCCIÓN DE EMISIONES DE NOx EN UN QUEMADOR DE CARBÓN PULVERIZADO.
DK06254290.7T DK1892470T3 (da) 2006-08-16 2006-08-16 Fremgangsmåde til mindskelse af NOx-emissioner i en pulveriseret-kul-brænder
DK09170949.3T DK2138765T3 (en) 2006-08-16 2006-08-16 Method of combustion
AT06254290T ATE497126T1 (de) 2006-08-16 2006-08-16 Verfahren zur minderung von nox-emissionen in einem kohlenstaubbrenner
PL06254290T PL1892470T3 (pl) 2006-08-16 2006-08-16 Sposób zmniejszania emisji NOx w palniku na pył węglowy
PL09151678T PL2051005T3 (pl) 2006-08-16 2006-08-16 Palnik o środkowym strumieniu powietrza
ES09170949.3T ES2576008T3 (es) 2006-08-16 2006-08-16 Método de combustión
DE602006019860T DE602006019860D1 (de) 2006-08-16 2006-08-16 Verfahren zur Minderung von NOx-Emissionen in einem Kohlenstaubbrenner
EP09151678.1A EP2051005B1 (fr) 2006-08-16 2006-08-16 Brûleur à jet d'air central
EP06254290A EP1892470B8 (fr) 2006-08-16 2006-08-16 Procédé pour réduire les émissions de NOx dans un brûleur à charbon pulvérisé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06254290A EP1892470B8 (fr) 2006-08-16 2006-08-16 Procédé pour réduire les émissions de NOx dans un brûleur à charbon pulvérisé

Related Child Applications (4)

Application Number Title Priority Date Filing Date
EP09151678.1A Division EP2051005B1 (fr) 2006-08-16 2006-08-16 Brûleur à jet d'air central
EP09170949.3A Division EP2138765B1 (fr) 2006-08-16 2006-08-16 Procédé de combustion
EP09151678.1 Division-Into 2009-01-29
EP09170949.3 Division-Into 2009-09-22

Publications (3)

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

Family

ID=37564416

Family Applications (3)

Application Number Title Priority Date Filing Date
EP09151678.1A Active EP2051005B1 (fr) 2006-08-16 2006-08-16 Brûleur à jet d'air central
EP06254290A Active EP1892470B8 (fr) 2006-08-16 2006-08-16 Procédé pour réduire les émissions de NOx dans un brûleur à charbon pulvérisé
EP09170949.3A Active EP2138765B1 (fr) 2006-08-16 2006-08-16 Procédé de combustion

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09151678.1A Active EP2051005B1 (fr) 2006-08-16 2006-08-16 Brûleur à jet d'air central

Family Applications After (1)

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

Country Status (6)

Country Link
EP (3) EP2051005B1 (fr)
AT (1) ATE497126T1 (fr)
DE (1) DE602006019860D1 (fr)
DK (2) DK1892470T3 (fr)
ES (3) ES2636594T3 (fr)
PL (3) PL2138765T3 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2933060C2 (de) * 1979-08-16 1987-01-22 L. & C. Steinmüller GmbH, 5270 Gummersbach Brenner zur Verbrennung von staubförmigen 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
EP0445938B1 (fr) * 1990-03-07 1996-06-26 Hitachi, Ltd. Brûleur à charbon pulvérisé, chaudière au charbon pulvérisé et procédé pour la combustion de charbon pulvérisé
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
CZ303467B6 (cs) 2000-08-04 2012-10-03 Babcock-Hitachi Kabushiki Kaisha Horák na pevné palivo a zpusob regulace spalování uskutecneného tímto horákem
WO2002057689A1 (fr) 2001-01-18 2002-07-25 Alstom Power Boiler Gmbh Bruleur pour la combustion de combustible pulverulent
ES2566798T3 (es) * 2002-05-15 2016-04-15 Praxair Technology, Inc. Combustión con bajas emisiones de NOx

Also Published As

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

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