EP0976977B1 - Kohlenstaubbrenner - Google Patents

Kohlenstaubbrenner Download PDF

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Publication number
EP0976977B1
EP0976977B1 EP19980114219 EP98114219A EP0976977B1 EP 0976977 B1 EP0976977 B1 EP 0976977B1 EP 19980114219 EP19980114219 EP 19980114219 EP 98114219 A EP98114219 A EP 98114219A EP 0976977 B1 EP0976977 B1 EP 0976977B1
Authority
EP
European Patent Office
Prior art keywords
pulverized coal
nozzle
air
mixture
furnace
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
Application number
EP19980114219
Other languages
English (en)
French (fr)
Other versions
EP0976977A1 (de
Inventor
Toshimitsu Nagasaki R & D Center of Mits Ichinose
Akiyasu Nagasaki R & D Center of Mits Okamoto
Takeshi Nagasaki R & D Center of Mits Suzuki
Masaharu Choryo Engineering Co. Ltd. Oguri
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to EP02006379A priority Critical patent/EP1219894B1/de
Priority to EP19980114219 priority patent/EP0976977B1/de
Priority to EP02006378A priority patent/EP1219893B1/de
Publication of EP0976977A1 publication Critical patent/EP0976977A1/de
Application granted granted Critical
Publication of EP0976977B1 publication Critical patent/EP0976977B1/de
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
    • 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 
    • F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
    • F23C5/08—Disposition of burners
    • F23C5/32—Disposition of burners to obtain rotating flames, i.e. flames moving helically or spirally
    • 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
    • F23D2201/101—Nozzle tips tiltable
    • 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

Definitions

  • the present invention relates to a pulverized coal burning boiler for generating a steam for a power plant, a factory and the like.
  • Reference numeral 01 denotes a boiler furnace main body, and a plurality of burner main bodies 02 are disposed in a vertical direction at each of four corners therein.
  • the burner main body 02 is constituted by. a combustion air nozzle 03, an auxiliary air nozzle 04, a pulverized coal mixture nozzle 05, etc. and a pulverized coal mixture 10, a combustion air 11, a main burner air 12 and an additional air 13 are supplied thereto through a pulverized coal mixture feeding pipe 06, an air feeding duct 07, a main burner air duct 08 and an additional air duct 09.
  • Reference numeral 14 denotes an additional air nozzle disposed at an upper position
  • reference numeral 15 denotes a furnace
  • a pulverized coal flame 16 is formed in the furnace 15.
  • Reference numeral 17 denotes an air adjusting damper assembled in each of the burner main bodies 02
  • reference numeral 18 denotes an imaginary circle imagined in the furnace 15 for explanation purpose
  • reference numeral 19 denotes a fire vortex formed in the furnace 15.
  • a coal fed to a coal pulverizing apparatus (not shown) is finely pulverized, is mixed with a carrying air (a hot air) simultaneously fed so as to form the pulverized coal mixture 10, and is fed to the pulverized coal mixture nozzle 05 provided in the burner main body 02 through the pulverized coal mixture feeding pipe 06.
  • the burner main bodies 02 are provided at four corners of the boiler furnace main body 01, and plural sets of burners, each burner comprising the combustion air nozzle 03, the pulverized coal mixture nozzle 05 provided in a center portion thereof and the auxiliary air nozzle 04 provided above and below the combustion air nozzle 03, are installed within each of the burner main bodies 02. (Here, there is a case that the burner main bodies 02 are provided not only at four corners of the boiler furnace main body 01, but also on a wall surface as shown in Fig. 6.)
  • Each set of these nozzles that is, the combustion air nozzle 03, the auxiliary air nozzle 04 and the pulverized coal mixture nozzle 05, is installed in such a manner as to blow the pulverized coal mixture 10 and the main burner air 12 in a tangential direction of an imaginary circle 18 which is set at a center portion on a horizontal cross section of the boiler furnace main body 01.
  • a construction drawing of the conventional pulverized coal mixture nozzle 05 will be shown in Fig. 7.
  • the additional air nozzles 14 are provided at four corners above the burner main bodies 02 in the boiler furnace main body 01.
  • the additional air nozzle 14 is installed in such a manner as to blow the additional air 13 in a tangential direction of an imaginary circle 18 which has a same diameter as that of the imaginary circle 18 with respect to the respective nozzles 03, 04 and 05 of the burner main body 02 and is set at a center portion on a horizontal cross section of the boiler furnace main body 01.
  • the pulverized coal mixture 10 supplied to the pulverized coal mixture nozzle 05 provided in the burner main body 02 is blown into the furnace 15 from the nozzle 05.
  • the combustion air 11 is fed through the air feeding duct 07 by a feeding apparatus (not shown), and is branched 'into the main burner air 12 and the additional air 13 before entering the burner main body 02.
  • the main burner air 12 is fed to the burner main body 02 through the main burner air duct 08, and is blown into the furnace 15 from the combustion air nozzle 03 and the auxiliary air nozzle 04.
  • An amount of the main burner air 12 is generally set to be equal to or less than a stoichiometric mixture ratio of an amount of the pulverized coal blown as the pulverized coal mixture 10 so as to hold a portion of the furnace 15 below the additional air nozzle 14 in a reducing atmosphere, thereby reducing a nitrogen oxide (hereinafter referred to as to NOx for short) generated by burning the pulverized coal.
  • NOx nitrogen oxide
  • the main burner air 12 and the branched additional air 13 are fed to the additional air nozzle 14, and blown into the furnace 15 so as to be used for completing a burning of a combustible portion left in the combustion gas due to the reduction combustion.
  • the pulverized coal mixture 10 blown into the furnace 15 from the four' corners of the boiler furnace main body 01 is ignited by an ignition source (not shown), and forms the pulverized coal flame 16.
  • the pulverized-coal flame 16 becomes a swirling flow so as to form the fire vortex 19, and ascend in the furnace 15 with swirling, thereby performing a swirling combustion.
  • the amount of the main burner air 12 blown from the burner main body 02 is equal to or less than the stoichiometric mixture ratio of the amount of the pulverized coal blown as the pulverized coal mixture 10 from the pulverized coal mixture nozzle 05, so that the portion of the furnace 15 below the additional air nozzle 14 portion becomes a reducing atmosphere.
  • a combustion exhaust gas generated by burning the pulverized coal becomes to contain a combustible portion, however, NOx in the combustion exhaust gas generated by burning the pulverized coal is reduced so that an intermediate product such as NH3 and HCN is generated in place thereof.
  • the combustion exhaust gas containing the combustible portion is blown with the additional air 13 in the additional air nozzle 14 portion, and the combustion thereof is completed till an outlet of the furnace.
  • the conventional pulverized coal burner Since a blowing momentum of the pulverized coal mixture 10 blown from the pulverized coal mixture nozzle 05 becomes large when a capacity of'the burner becomes large, a degree of collision of the pulverized coal flame 16 with side wall of the furnace 15 is increased, and in addition thereto, it becomes difficult to secure a stable ignitability. As a result, the conventional pulverized coal burner has a disadvantage that it is hard to increase the capacity.
  • the increase of the number of the burners is performed by increasing a number of stages of the burners since the number of the burners on the horizontal cross section of the boiler furnace main body 01 is fixed, however, in this manner, a height of the boiler is increased, so that a cost for constructing the boiler is increased.
  • JP 58129105 A there is known a pulverized coal burning boiler comprising a furnace and pulverized coal burners for supplying a pulverized coal mixture in a tangential direction of an imaginary circle in a horizontal plane of the furnace.
  • a rich/lean separating body in the form of a deflector block is mounted within a pulverized coal supply pipe to generate thick or thin concentration of pulverized coal.
  • US 5 593 298 A describes a pollutant reducing modification of a tangential fired furnace in which air flow-restricting blades which restrict air flow from a main air-fuel compartment discharge portion or close a part of the area of the main air-fuel compartment discharge face to direct a larger proportion of the air required for complete combustion of the fuel from the main air-fuel compartment on a path outside of a fire ball in the furnace firing chamber.
  • An object of the present invention is to solve the problems in the conventional prior art mentioned above and provide a pulverized coal burning boiler which has an increased capacity of the pulverized coal burner.
  • a pulverized coal burning boiler as defined in claim 1.
  • a preferred embodiment of the invention is defined in the dependent claim.
  • the invention is mad for achieving the objects mentioned above, and provides a pulverized coal burning boiler with a pulverized coal burner for supplying a pulverized coal mixture in a tangential direction of an imaginary circle in a horizontal plane of a furnace so as to be burned, characterized in that a rich/lean separating body is arranged within a pulverized coal mixture nozzle so that the pulverized coal mixture becomes rich on a central side of the imaginary circle.
  • the pulverized coal mixture blown from the pulverized coal mixture nozzle is blown such that an outer peripheral side of a fire vortex formed in the central portion of the furnace is made lean and an inner portion side thereof is made rich, and a supply amount'of a combustion air supplied from a combustion air nozzle, for example, provided on the outer periphery of the pulverized coal mixture nozzle is increased on the lean pulverized coal mixture side, thereby the pulverized coal flame is prevented from colliding with the wall surface of the furnace, so that a slagging is reduced and it becomes possible to make a capacity of the pulverized coal burner larger.
  • the invention provides that a mixture injecting port of a front end of the pulverized coal mixture nozzle is divided into upper and lower portions and a means for introducing an ignition promoting air is provided between the divided injecting ports. Accordingly, an ignition stability of the pulverized coal flame is improved by dividing the pulverized coal mixture blown from the pulverized coal mixture nozzle into the upper and lower directions so as to reduce to half an amount of the pulverized coal mixture blown from one of the directions thereof and by blowing a high temperature combustion air between the pulverized coal mixtures flown from two directions, thereby making it possible to increase a capacity of the pulverized coal burner.
  • a pulverized coal mixture nozzle is made eccentric with respect to an air nozzle so that the pulverized coal mixture becomes rich on a central side of the imaginary circle. Accordingly, an axis of the pulverized coal mixture nozzle and an axis of the air nozzle are moved and shifted to be eccentric with each other so that a concentration of the pulverized coal of the'pulverized coal mixture blown to an outer peripheral side of a fire vortex (near the wall surface of the furnace) formed in the furnace from the pulverized coal mixture nozzle is reduced and a concentration of the pulverized coal blown to an inner portion side of the fire vortex becomes rich, thereby the pulverized coal flame is prevented from colliding with the furnace wall and an amount of an air near the inner wall surface of the furnace is increased to form an oxidation atmosphere. Therefore, the molten ash is prevented from attaching by increasing an ash melting point.
  • reference numerals 101 to 119 correspond to the reference numerals 01 to 19 in the conventional structure, a description will be simplified as much as possible, and an ignition promoting air hole 120 provided in a pulverized coal mixture nozzle 105, an ignition promoting air chamber 121, an ignition promoting air chamber inlet port 122, a guiding plate 123, a rich/lean separating body 124, etc. will be described in detail.
  • a coal fed to a coal pulverizing apparatus (not shown) is pulverized there, is mixed with a carrying air (a hot air) simultaneously fed so as to form a pulverized coal mixture 110, and is fed to a pulverized coal mixture nozzle 105 provided in a burner main body 102 through a pulverized coal mixture transporting pipe 106.
  • the pulverized coal mixture nozzle 105 is constituted by a pulverized coal mixture pipe connected to the pulverized coal mixture transporting pipe 106, and a mixture injecting nozzle attached to a front end thereof.
  • the rich/lean separating body 124 is provided within the pulverized coal mixture pipe near an inlet of the mixture injecting nozzle.
  • An injecting port of the mixture injecting nozzle is branched into upper and lower directions with an optional angle, for example, an angle of 10 degrees to 30 degrees in one direction with respect to a horizontal axis, and the ignition promoting air chamber 121 is provided between the upper and lower injecting ports.
  • the combustion air nozzle 103 is provided on an outer periphery of the mixture injecting nozzle, and blows the main burner air 112 into the furnace 114 from a blowing port constituted by-the mixture injecting nozzle and the combustion air nozzle 103.
  • the pulverized coal mixture 110 fed to the pulverized coal mixture nozzle 105 flows in a biased manner at the pulverized coal mixture pipe outlet portion by the rich/lean separating body 124.
  • the pulverized coal mixture 110 is structured such that a concentration of the pulverized coal becomes lean on the rich/lean separating body 124 attaching side at the mixture injecting nozzle outlet port due to a force of inertia and a concentration of the pulverized coal on the opposite side not attaching the same becomes rich.
  • a blowing port of the main burner air 112 formed by the mixture injecting nozzle and the combustion air nozzle 103 is formed wider on the lean pulverized coal side of the pulverized coal mixture 110 and narrower on the rich pulverized coal side.
  • a portion, blown into a central side of the fire vortex 119, of the pulverized coal mixture 110 injected from the mixture injecting nozzle becomes to an upstream side of the swirling combustion flow, so that said portion is in a state of easily igniting having a large radiant heat from the adjacent pulverized coal flame 116.
  • the pulverized coal mixture 110 is set such that the rich pulverized coal side is blown to the central side of the fire vortex 119.
  • a new device is further added to the mixture injecting nozzle in order to improve an ignition stability of the pulverized coal flame 116.
  • the mixture injecting nozzle is structured such that the injecting port thereof is branched to the upper and lower directions with an optional angle, the ignition promoting air chamber 121 is provided between the upper and lower injecting ports, and the-guiding plate 123 and the ignition promoting air chamber inlet hole 122 are provided in the inlet of said air chamber 121.
  • the ignition promoting air chamber 121 is formed by disposing a plate on a side facing to the furnace 115, and the ignition promoting air hole 120 is bored on the plate so as to blow the main burner air 112, which has flown to the ignition promoting air chamber 121 through the ignition promoting air chamber inlet hole 122, between two pulverized coal mixtures 110 injected from the mixture injecting nozzle.
  • the main burner air 112 blown from the ignition promoting air hole 120 prevents flows of the pulverized coal mixture 110 blown from two injection ports of the mixture injecting nozzle from joining together earlier, and since a temperature of the main burner air 112 is high to be about 300 °C in comparison to a temperature of the pulverized coal mixture 110 which is generally 100 °C or less (in many cases, about 80 °C), an effect that a generation of a volatile matter between the pulverized coal mixtures 110 is promoted can be obtained, so that an igniting stability of the pulverized coal flame 116 can be secured.
  • the concentration of the pulverized coal of the pulverized coal mixture blown into the furnace is made rich in the portion blowing to the central side of the fire vortex and lean in the portion blowing to the outer peripheral side, thereby preventing the pulverized coal flame from colliding with the wall surface of the furnace, and the slagging can be reduced and the capacity of the pulverized coal burner can be enlarged.
  • the ignition promoting air hole of the ignition promoting air chamber provided between-the upper and lower injecting outlet ports-at the front end of the pulverized coal mixture nozzle, a part of the high temperature main burner air is blown to the portion between the pulverized coal mixture injecting flows injected from the upper and lower injecting outlet ports, thereby preventing the upper and lower pulverized coal mixture injecting flows from being joined together earlier, and further, since the generation of the volatile matter is promoted, the pulverized coal flame can be stably ignited and burned, and the capacity of the pulverized coal burner can be enlarged.
  • the axis of the pulverized coal mixture nozzle and the axis of the air nozzle are shifted to be eccentric with each other so that the concentration of the pulverized coal in the pulverized coal mixture blown from the pulverized coal mixture nozzle to the portion on the outer peripheral side of the fire vortex formed in the furnace, that is, the portion close to the wall surface of the furnace is made lean and the concentration of the pulverized coal blown to the portion the inner side of the fire vortex is made rich, thereby the pulverized coal flame is prevented from colliding with the furnace wall and the air amount near the furnace wall is increased so as to form an oxidation atmosphere and increase the ash melting point, and the molten slag is prevented from attaching.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Claims (2)

  1. Kohlenstaubverbrennungs-Heizkessel mit einem Ofen (115) und einem Kohlenstaubbrenner (102) zum Zuführen eines Kohlenstaubgemischs (110) in einer Tangentialrichtung eines imaginären Kreises (118) in einer horizontalen Ebene des Ofens (115) zur Verbrennung, wobei ein Fett/Mager-Trennkörper (124) in einer Kohlenstaubgemischdüse (105) des Kohlenstaubbrenners (102) so angeordnet ist, daß das Kohlenstaubgemisch (110) an einer zentralen Seite des imaginären Kreises (118) fett wird,
       dadurch gekennzeichnet, daß eine Gemischeinspritzöffnung eines Vorderendes der Kohlenstaubgemischdüse (105) in obere und untere Abschnitte unterteilt ist und ein Mittel (120-123) zum Einleiten verbrennungsfördernder Luft (112) zwischen den unterteilten Einspritzöffnungen vorgesehen ist.
  2. Kohlenstaubverbrennungs-Heizkessel nach Anspruch 1, dadurch gekennzeichnet, daß die Kohlenstaubgemischdüse (105) in bezug auf eine die Kohlenstaubgemischdüse (105) umgebende Luftdüse (103) exzentrisch ist, so daß eine Einblasöffnung für die Luft (112), die von der Kohlenstaubgemischdüse (105) und der Luftdüse (103) gebildet ist, auf der Seite des mageren Kohlenstaubs des Kohlenstaubgemischs (110) breiter und auf der Seite des fetten Kohlenstaubs schmäler ist.
EP19980114219 1998-07-29 1998-07-29 Kohlenstaubbrenner Expired - Lifetime EP0976977B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02006379A EP1219894B1 (de) 1998-07-29 1998-07-29 Kohlenstaubbrenner
EP19980114219 EP0976977B1 (de) 1998-07-29 1998-07-29 Kohlenstaubbrenner
EP02006378A EP1219893B1 (de) 1998-07-29 1998-07-29 Kohlenstaubbrenner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19980114219 EP0976977B1 (de) 1998-07-29 1998-07-29 Kohlenstaubbrenner

Related Child Applications (4)

Application Number Title Priority Date Filing Date
EP02006379A Division EP1219894B1 (de) 1998-07-29 1998-07-29 Kohlenstaubbrenner
EP02006378A Division EP1219893B1 (de) 1998-07-29 1998-07-29 Kohlenstaubbrenner
EP02006379.8 Division-Into 2002-03-21
EP02006378.0 Division-Into 2002-03-21

Publications (2)

Publication Number Publication Date
EP0976977A1 EP0976977A1 (de) 2000-02-02
EP0976977B1 true EP0976977B1 (de) 2003-03-26

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EP02006378A Expired - Lifetime EP1219893B1 (de) 1998-07-29 1998-07-29 Kohlenstaubbrenner
EP19980114219 Expired - Lifetime EP0976977B1 (de) 1998-07-29 1998-07-29 Kohlenstaubbrenner
EP02006379A Expired - Lifetime EP1219894B1 (de) 1998-07-29 1998-07-29 Kohlenstaubbrenner

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101598333B (zh) * 2009-06-30 2012-09-26 上海锅炉厂有限公司 一种低氮氧化物排放煤粉切向燃烧装置

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AU6005301A (en) * 2000-04-12 2001-10-23 Saar Energie Gmbh Method for burning particulate fuel in a power station boiler
DE10019114A1 (de) * 2000-04-18 2001-10-25 Bbp Energy Gmbh Feuerung und Verfahren zur Verbrennung von Kohlenstaub
JP4969015B2 (ja) * 2000-08-04 2012-07-04 バブコック日立株式会社 固体燃料バーナと固体燃料バーナを用いた燃焼方法
FR2848641B1 (fr) * 2002-12-11 2005-12-16 Alstom Switzerland Ltd Systeme de chauffe indirecte avec valorisation des particules de combustible ultra fines
EP1898150A4 (de) * 2005-06-03 2010-08-11 Zakrytoe Aktsionernoe Obschest Befeuerter dampferzeuger
JP2011127836A (ja) * 2009-12-17 2011-06-30 Mitsubishi Heavy Ind Ltd 固体燃料焚きバーナ及び固体燃料焚きボイラ
JP5374404B2 (ja) 2009-12-22 2013-12-25 三菱重工業株式会社 燃焼バーナおよびこの燃焼バーナを備えるボイラ
DE102010052464A1 (de) * 2010-11-24 2012-05-24 Ludwig Müller Dreh-Strom-Feuerung (DSF)
MX357868B (es) * 2011-04-01 2018-07-25 Mitsubishi Heavy Ind Ltd Quemador de combustion, quemador de combustion de combustible solido, hervidor de combustion de combustible solido, hervidor y metodo para poner en operacion el hervidor.
JP5800423B2 (ja) * 2011-11-29 2015-10-28 三菱日立パワーシステムズ株式会社 バーナおよびこれを備えたボイラ
US9377191B2 (en) 2013-06-25 2016-06-28 The Babcock & Wilcox Company Burner with flame stabilizing/center air jet device for low quality fuel
CN103322561A (zh) * 2013-07-04 2013-09-25 哈尔滨锅炉厂有限责任公司 双腔深度分级煤粉燃烧装置
JP6087793B2 (ja) * 2013-11-15 2017-03-01 三菱日立パワーシステムズ株式会社 ボイラ
CN104494034B (zh) * 2014-12-26 2016-08-31 东莞市秋天塑胶材料有限公司 Pvc发泡炉供热***
DE102015226566A1 (de) 2015-12-22 2017-06-22 Siemens Aktiengesellschaft Abgeknickter Hauptbrenner
RU2635947C2 (ru) * 2016-04-12 2017-11-17 федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет" (национальный исследовательский университет) Котел и способ его работы
JP6879771B2 (ja) * 2017-02-17 2021-06-02 三菱パワー株式会社 燃焼バーナ及びこれを備えたボイラ
CN107083258B (zh) * 2017-06-23 2024-03-26 航天长征化学工程股份有限公司 一种气化烧嘴装置
PL3438533T3 (pl) * 2017-07-31 2021-07-12 General Electric Technology Gmbh Zespół dyszy pyłowej dla aparatu wytwrzającego parę
CN109458612A (zh) * 2017-09-06 2019-03-12 晋能电力集团有限公司 一种煤粉气化燃烧的低氮燃烧装置及燃烧方法
CN108397766B (zh) * 2018-03-01 2020-06-05 中国神华能源股份有限公司 锅炉以及锅炉的配风方法
CN113790440A (zh) * 2021-10-26 2021-12-14 西安热工研究院有限公司 一种煤粉燃烧器的一次风喷口

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101598333B (zh) * 2009-06-30 2012-09-26 上海锅炉厂有限公司 一种低氮氧化物排放煤粉切向燃烧装置

Also Published As

Publication number Publication date
EP0976977A1 (de) 2000-02-02
EP1219893A1 (de) 2002-07-03
EP1219894B1 (de) 2006-04-05
EP1219893B1 (de) 2006-01-18
EP1219894A1 (de) 2002-07-03

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