EP1991810A1 - Bruleur annulaire - Google Patents

Bruleur annulaire

Info

Publication number
EP1991810A1
EP1991810A1 EP07711219A EP07711219A EP1991810A1 EP 1991810 A1 EP1991810 A1 EP 1991810A1 EP 07711219 A EP07711219 A EP 07711219A EP 07711219 A EP07711219 A EP 07711219A EP 1991810 A1 EP1991810 A1 EP 1991810A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
gas
section
gas nozzle
cross
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.)
Withdrawn
Application number
EP07711219A
Other languages
German (de)
English (en)
Inventor
Bernd Krohmer
Michael Weisenburger
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.)
General Electric Technology GmbH
Original Assignee
Alstom Technology AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38110255&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1991810(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Alstom Technology AG filed Critical Alstom Technology AG
Publication of EP1991810A1 publication Critical patent/EP1991810A1/fr
Withdrawn legal-status Critical Current

Links

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 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
    • F23C7/004—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion using vanes
    • 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
    • F23C9/003—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent 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
    • F23C2202/30—Premixing fluegas with combustion air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
    • F23D2201/10—Nozzle tips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
    • F23D2201/20—Fuel flow guiding devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/01001—Pulverised solid fuel burner with means for swirling the fuel-air mixture

Definitions

  • the invention relates to a round burner for the combustion of fossil fuels and a method for operating such a round burner.
  • Round burners are next jet burners, which are usually rectangular cross-sections, the most commonly used burners in combustion chambers of large power plants, where fossil fuels is burned. They are often also referred to as vortex or swirl burner, since usually the introduced oxidizing agent and / or the introduced fuel is twisted or swirled by means of swirling devices, in order to carry out the combustion more efficiently.
  • Such round burners which have become known for example from document “Development of low-emission dust combustion systems” from VGB power plant technology 76 (1996), Issue 5, usually have a core air tube (or Kem Kunststoffdüse) on the outside of a fuel pipe (or nozzle).
  • the secondary air tube may be surrounded by a tertiary air tube (or nozzle) on the outside, whereby all tubes or nozzles are aligned coaxially and thus each have circular ring cross sections
  • the medium named according to the name of the pipe or nozzle is introduced into the combustion chamber for combustion of the fossil fuel, eg secondary air is introduced through the secondary air nozzle Fuel is entered through the fuel nozzle along with its carrier medium, the primary air protrude.
  • the object of the invention is therefore to provide a round burner, which is able, if necessary, different fossil fuels, such as
  • the inventive solution is a round burner and a method for
  • one of the gas nozzles I, II or III or gas nozzles II.1 are formed in their entirety such that by their cross section in oxyfuel operation, the total amount of oxygen over this one cross section or in the case of the gas nozzle II.1 on their Entire cross-section is introduced, which is required for the combustion of the fuel introduced at the round burner.
  • the first nozzle and / or the fuel nozzle and / or the gas nozzle I and / or the gas nozzle II or gas nozzles 11.1 and / or gas nozzle III with a storage ring and / or to train with a deflector throat.
  • the first nozzle and / or the fuel nozzle and / or the gas nozzle 1 and / or the gas nozzle II or gas nozzles 11.1 and / or the gas nozzle III spin elements.
  • the combustion of the fossil fuel can be intensified and optimized. It is expedient to twist the swirl elements of the first nozzle and the fuel nozzle either in the same direction or in opposite directions to each other, i. to adjust the swirl elements such that either an equal or an opposing swirl arises at the gas and fuel stream passed through.
  • An expedient embodiment of the invention provides that the swirl elements can be adjusted during burner operation at the gas nozzle I and / or gas nozzle II or at the gas nozzles II.1 and / or gas nozzle III. This can be acted on at any time during the power plant operation on the firing.
  • An expedient embodiment of the invention provides that the width s of the annular gap of the fuel nozzle annular cross section is at least 20 mm. By this measure, the pressure loss caused by the fuel nozzle can be kept low and the geometries of the other nozzles of the round burner can be favorably influenced.
  • a further advantageous embodiment provides that the longitudinal axes of the gas nozzles II.1 are arranged parallel or inclined to the longitudinal axis of the first nozzle or to the round burner.
  • FIG. 1 shows schematically a longitudinal section through a round burner according to the invention
  • FIG. 4 schematically shows a cross section according to section B-B in FIG. 3, FIG.
  • FIG. 6 shows the assignment or connection of the respective round burner nozzle cross sections during operation as a function of the O 2 carrier volume flow and the gas velocity by means of a diagram.
  • FIG. 1 shows a round burner 1 according to the invention in longitudinal section, which is suitable for the combustion of various fossil fuels.
  • the round burner 1 is designed so that, depending on requirements, for example, powdered dry lignite or powdered coal or oil or gas (for the use of the round burner according to the invention for the combustion of oil or gas is still an oil or gas lance, not shown, for introducing the fuel , the Centric in the round burner is arranged) can be burned either by means of air or by means of O 2 , which is introduced by an O 2 carrier.
  • the O 2 carrier may have different O 2 volume proportions, the O 2 carrier is usually a recirculated from the rear flues of the power plant flue gas or Rezigas.
  • the round burner 1 according to the invention is not only suitable for the combustion of different fuels, but also for the use of different oxidants, ie it can be added in the conventional manner, air or O 2 , ie pure oxygen, in oxyfuel operation to thereby form high-purity CO 2 , which is separable and climate-depended landfillable.
  • the oxygen is, as already mentioned above, supplied as a mixture with, for example Rezigas, wherein the proportion of oxygen in the mixture may vary.
  • the used as O 2 carrier gas recirculated flue gas (Rezigas) is taken for example from the combustion chamber downstream flue gas path and fed to the round burner 1 at a temperature of 150 ° to 300 ° C. For this purpose, if necessary, it must be reheated by heat exchange with a hotter medium.
  • the Rezigas can have a low residual oxygen content.
  • the round burner 1 comprises a first nozzle 2 having a cross-section 10, which is surrounded or enveloped by a fuel nozzle 3 aligned coaxially with the first nozzle 2, and a circular ring cross-section 11 is formed between the first nozzle 2 and the fuel nozzle 3 is, whose annular gap in the radial direction has a width s.
  • the fuel nozzle 3 is surrounded or surrounded by the gas nozzle I 4, this of the gas nozzle Il 5 and the latter of the gas nozzle III 6.
  • the gas nozzles I, II and III 4, 5 and 6 are all aligned coaxially with the first nozzle 2, wherein within the gas nozzles I, II and III 4, 5 and 6, the circular ring sections 12, 13 and 14 are formed.
  • Figure 3 and 4 shows a further round burner 1 according to the invention.
  • this has no coaxial
  • eight gas nozzles II.1 5.1 whose longitudinal axes 16 are parallel to the longitudinal axis 15 of the first nozzle 2 and the round burner 1 and the gas nozzles II.1 5.1 within the circular ring cross section 12 of the gas nozzle I 4 are arranged.
  • the longitudinal axes 16 of the gas nozzles II.1 5.1 can also be inclined, ie aligned at an angle to the longitudinal axis 15 of the first nozzle 2 (not shown).
  • the gas nozzles 11.1 5.1 can either be directed towards the longitudinal axis 15 or away from it. Alternatively, and as shown in FIG. 5, the gas nozzles 11.1 5.1 can also be arranged inside the circular ring cross-section 14 of the gas nozzle III6.
  • the gas nozzles 11.1 5.1 have in total an overall cross section 13.1.
  • the centers of all gas nozzles II.1 5.1 lie advantageously on a pitch circle and are preferably equally spaced from each other.
  • the gas nozzle exit region 17 defines the region in which, seen over a respective cross section, all cross sections 10, 11, 12, 13 or 13.1, 14 of the nozzles 2, 3, A 1 5 and 5.1, 6 exist and the various partial gas streams and the fuel flow last in the respective nozzles 2, 3, A 1 5 and 5.1, 6 flow through before they exit into the combustion chamber.
  • the circular ring cross-section 1 1 of the fuel nozzle 3 is dependent on the carrier medium volume flow carrying the fuel and on the speed of the carrier medium within the fuel nozzle 3, which is generally 10 to 35 m / s.
  • the width s of the annular gap of the circular ring section 1 1 of the fuel nozzle 3 in the radial direction is advantageously formed with at least 20 mm.
  • FIG. 6 shows a diagram from which it can be seen by way of example which nozzle combinations are possible as a function of the O 2 carrier volume flow introduced by the round burner 1. 0 to about 20% of the O 2 carrier volume flow are introduced only by the cross section 13 or 13.1 of the gas nozzle Il 5 and the gas nozzles II.1 5.1. As the O 2 carrier volume flow increases, it is introduced through the gas nozzle I 4 instead of through the gas nozzle (s) Il 5 or II.1 5.1. If the O 2 carrier volume flow increases further, the cross section 13 or 13.1 of the gas nozzle (s) Il 5 or 11.1 5.1 is added to the gas nozzle I 4.
  • the round burner 1 For an oxyfuel operation of the round burner 1 may be formed such that one of the cross-sectional surfaces 12, 13 or 13.1 or 14 of the gas nozzles I, II or II.1 or III 4, 5 or 5.1 or 6 is suitable, the entire required Oxygen quantity through this introduce a cross-section, while the required amount of oxygen as a pure O 2 gas stream can be introduced.
  • at least one further gas nozzle I, II or 11.1, III 4, 5 or 5.1, 6 must be supplied with Rezigas.
  • the introduction to the burner 1 for example, look like the following: introduction of the fossil fuel through the fuel nozzle 3, introduction of O 2 through the gas nozzle Il 5 or gas nozzles II.1 5.1 and introduction of Rezigas, ie of recirculated flue gas through the first nozzle 2 and as a carrier gas through the fuel nozzle 3 and through the gas nozzles I and III 4, 6
  • the Rezigasströmen within the first nozzle 2, the fuel nozzle 3 and the gas nozzles I and III 4, 6 an oxygen flow component and the O 2 flow within the gas nozzle Il 5 and the gas nozzles II.1 5.1 a Rezigasstromanteil be allocated.
  • the exemplary data relate to 100% gas flow rate through the round burner 1, at lower flow rates, as described above, the throughput through individual gas nozzles omitted (see Figure
  • Staurese 7 and / or Abweiskhlen 8 These may each be attached to each of the nozzles 2, 3, 4, 5 or 5.1 and 6 respectively.
  • individual or all gas partial flows or the fuel flow can be twisted by swirl elements 9 arranged in the respective nozzle cross sections 10, 11, 12, 13 or 13.1 and 14, the gas flow in the first gas nozzle 2 and the fuel nozzle 3 (as carrier flow ) can be twisted in the same direction or in opposite directions to each other.
  • the swirl elements 9 on the gas nozzles I, II or II.1 or III 4, 5 or 5.1 or 6 can also be designed to be adjustable during burner operation in order to influence the firing during operation. The selection of said devices depends on the preferred operating conditions (eg full-load air operation or operation with a certain Gy component, etc.) and the associated combinations of the burner cross-sections of the round burner 1. Thus, the flame guidance can be favorably influenced in these operating cases.

Abstract

L'invention concerne un brûleur annulaire pour la combustion de combustibles fossiles, comprenant : une première buse ( 2 ) pour introduire un courant d'air ou de gaz de recirculation ou d'un courant mixte de O2 ou d'air et de gaz de recirculation, une buse à combustible (3) disposée coaxialement à la première buse (2) et l'entourant, et formant une section transversale annulaire circulaire (11) pour l'injection de combustible, une buse à gaz I (4) disposée coaxialement à la première buse (2) et entourant la buse à combustible (3) et formant une section transversale annulaire circulaire (12) pour introduire un courant d'air ou de gaz de recirculation ou un courant mixte de O2 ou d'air et de gaz de recirculation, une buse à gaz II (5) disposée coaxialement à la première buse (2) et entourant la buse à gaz I (4) et formant une section transversale annulaire circulaire (13), pour introduire un courant d'air ou de O2 ou un courant mixte de O2 ou d'air et de gaz de recirculation, une buse à gaz III (6) disposée coaxialement à la première buse (2) et entourant la buse à gaz II (5) et formant une section transversale annulaire circulaire (14) pour introduire un courant d'air ou de gaz de recirculation constitué d'O2 ou d'air et de gaz de recirculation, le rapport de la surface de la section transversale annulaire circulaire (13) de la buse à gaz II (5) à la surface de la section transversale annulaire circulaire (12) de la buse à gaz I (4) étant de 1,2 à 2,0 : 1, et le rapport de la surface de la section transversale annulaire circulaire (14) de la buse à gaz III (6) à la surface de la section transversale annulaire circulaire (12) de la buse à gaz I (4) étant de 0,2 à 0,8 : 1 et le rapport de la surface de la section transversale (10) de la première buse (2) à la surface de la section transversale annulaire circulaire (12) de la buse à gaz I (4) étant de 0,01 à 0,1 : 1.
EP07711219A 2006-03-09 2007-03-02 Bruleur annulaire Withdrawn EP1991810A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610011326 DE102006011326C5 (de) 2006-03-09 2006-03-09 Rundbrenner
PCT/DE2007/000384 WO2007101427A1 (fr) 2006-03-09 2007-03-02 Bruleur annulaire

Publications (1)

Publication Number Publication Date
EP1991810A1 true EP1991810A1 (fr) 2008-11-19

Family

ID=38110255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07711219A Withdrawn EP1991810A1 (fr) 2006-03-09 2007-03-02 Bruleur annulaire

Country Status (5)

Country Link
EP (1) EP1991810A1 (fr)
CN (1) CN101400947B (fr)
AU (1) AU2007222784B2 (fr)
DE (1) DE102006011326C5 (fr)
WO (1) WO2007101427A1 (fr)

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* Cited by examiner, † Cited by third party
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DE102007030269B4 (de) * 2007-06-28 2014-07-17 Mitsubishi Hitachi Power Systems Europe Gmbh Kohlenstaubbrenner zur Verfeuerung von in Dichtstromförderung zugeführtem Brennstoff
EP2080952A1 (fr) * 2008-01-17 2009-07-22 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Brûleur et procédé pour alterner une oxycombustion et une combustion à l'air
KR101228359B1 (ko) 2008-03-06 2013-02-01 일렉트릭 파워 디벨롭먼트 컴퍼니 리미티드 산소 연소 보일러의 미분탄 버너
EP2479491B1 (fr) * 2011-01-20 2014-03-26 Fortum OYJ Procédé et brûleur pour brûler du gaz pauvre dans une chaudière de centrale électrique
DE102011011207A1 (de) * 2011-02-14 2012-08-16 Air Liquide Deutschland Gmbh Brenner zum gleichmäßigen Erwärmen eines langen Ofens
US8920159B2 (en) * 2011-11-23 2014-12-30 Honeywell International Inc. Burner with oxygen and fuel mixing apparatus
DE102011056655B4 (de) 2011-12-20 2013-10-31 Alstom Technology Ltd. Brenner zum Verbrennen eines staubförmigen Brennstoffes für einen Kessel mit Plasmazündbrenner
CN102944016B (zh) * 2012-12-11 2016-01-20 开泰镁业有限公司 大型立式还原炉用煤粉燃烧器
CN103062764B (zh) * 2013-01-25 2015-11-18 福建永恒能源管理有限公司 一种低氮粉体燃料燃烧器
CN103277795B (zh) * 2013-05-27 2015-05-20 中国科学院广州能源研究所 可调节烟气自身再循环燃气燃烧器
WO2016179823A1 (fr) * 2015-05-14 2016-11-17 Zheng Shi Système et procédé pour la combustion de combustibles solides pulvérisés dans des chaudières à petite et moyenne échelle
US10711994B2 (en) 2017-01-19 2020-07-14 General Electric Technology Gmbh System, method and apparatus for solid fuel ignition
WO2019104614A1 (fr) * 2017-11-30 2019-06-06 乔治洛德方法研究和开发液化空气有限公司 Brûleur oxydant-polycombustible pouvant être utilisé pour un combustible solide et pour un combustible gazeux
JP7257517B2 (ja) * 2018-12-21 2023-04-13 シーラス ヒート テクノロジー カンパニー エルエルシー 酸素フォアハースバーナーアセンブリ
CN112178633A (zh) * 2020-09-29 2021-01-05 湖北赤焰热能工程有限公司 一种浓缩型双调风旋流燃烧器及方法

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DE1868003U (de) * 1962-02-10 1963-02-28 Steinmueller Gmbh L & C Brenner fuer kohlenstaubfeuerungen.
DE8308076U1 (fr) * 1983-03-18 1987-10-22 Stubinen Utveckling Ab, Stockholm, Se
US4857075A (en) * 1988-05-19 1989-08-15 The Dow Chemical Company Apparatus for use with pressurized reactors
DE4435640C2 (de) * 1994-10-06 2001-01-04 Steinmueller Gmbh L & C Brenner zur Verbrennung von staubförmigem Brennstoff
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
FR2772888B1 (fr) * 1997-12-24 2000-03-10 Pillard Chauffage Amelioration aux bruleurs a combustible solide
RS50092B (sr) * 2000-08-04 2009-01-22 Babcock-Hitachi Kabushiki Kaisha, Gorionik za čvrsto gorivo i postupak sagorevanja u gorioniku za čvrsto gorivo
PL199944B1 (pl) * 2001-01-18 2008-11-28 Alstom Power Boiler Gmbh Palnik i sposób spalania paliwa pyłowego
DE10356703A1 (de) * 2003-11-28 2005-07-14 Vattenfall Europe Generation Ag & Co. Kg Verfahren zur Verbrennung von fossillen Brennstoffen in einem Dampferzeuger nach dem Oxyfuel-Prozess
DE102004059679B4 (de) * 2003-12-16 2005-12-22 Alstom Power Boiler Gmbh Rundbrenner zur Verbrennung von staubförmigem Brennstoff

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Title
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Also Published As

Publication number Publication date
CN101400947A (zh) 2009-04-01
WO2007101427A1 (fr) 2007-09-13
AU2007222784B2 (en) 2011-02-24
DE102006011326B4 (de) 2008-04-17
DE102006011326C5 (de) 2015-03-19
DE102006011326A1 (de) 2007-09-13
CN101400947B (zh) 2011-02-09
AU2007222784A1 (en) 2007-09-13

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