US20100279239A1 - Boiler structure - Google Patents

Boiler structure Download PDF

Info

Publication number
US20100279239A1
US20100279239A1 US12/811,901 US81190108A US2010279239A1 US 20100279239 A1 US20100279239 A1 US 20100279239A1 US 81190108 A US81190108 A US 81190108A US 2010279239 A1 US2010279239 A1 US 2010279239A1
Authority
US
United States
Prior art keywords
air
furnace
burners
boiler structure
supplying
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.)
Abandoned
Application number
US12/811,901
Other languages
English (en)
Inventor
Ryuhei Takashima
Takuichiro Daimaru
Shigehide Komada
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
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD. reassignment MITSUBISHI HEAVY INDUSTRIES, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DAIMARU, TAKUICHIRO, KOMADA, SHIGEHIDE, TAKASHIMA, RYUHEI
Publication of US20100279239A1 publication Critical patent/US20100279239A1/en
Abandoned legal-status Critical Current

Links

Images

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
    • F23C7/02—Disposition of air supply not passing through burner
    • F23C7/04—Disposition of air supply not passing through burner to obtain maximum heat transfer to wall of combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
    • 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
    • F23C5/28—Disposition of burners to obtain flames in opposing directions, e.g. impacting flames
    • 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
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
    • F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
    • F23C6/045—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 

Definitions

  • the present invention relates to a boiler structure compatible with coal and various fuels containing sulfur.
  • some recent boilers for use with fuels such as coal and oil are supplied with air in multiple stages to form a reducing-combustion zone where combustion proceeds in a reducing atmosphere between a main burner and an additional-air supplying portion.
  • furnace wall surfaces are exposed to a severe corrosive environment where hydrogen sulfide, which is a corrosive component, is produced in large amounts. This necessitates maintenance such as spray coating onto furnace walls or regular replacement of furnace wall panels.
  • Another concern is slag deposition, since the reducing-combustion zone is a region with a reducing atmosphere where the thermal load in the furnace is higher.
  • burners are disposed at the four corners in a furnace having a rectangular cross section to form a swirling flow, with each of the burners forming an air flow that is offset toward a furnace wall (for example, see Patent Document 1).
  • nozzles are provided to supply a curtain of air or a curtain of exhaust gas for deflecting the flames, thereby preventing slagging around the burners (for example, see Patent Document 2).
  • Patent Document 1 the Publication of U.S. Pat. No. 6,237,513
  • Patent Document 2 Japanese Unexamined Patent Application, Publication No. HEI-7-119923
  • Patent Document 1 cannot effectively increase the oxygen concentration because oxygen contained in the air is consumed before it reaches a target wall surface.
  • the flow rate at which the air is ejected must be increased to increase the oxygen concentration. This is undesirable because it leads to increased auxiliary power, including that of a compressor.
  • a circulating firing boiler structure that is compatible with coal and various fuels containing sulfur and that is configured so that fuel and combustion air supplied into the furnace from burners disposed at a plurality of positions on furnace walls forming a rectangular cross section are combusted so as to form a swirling flow.
  • An object of the present invention which has been made in light of the above circumstances, is to provide a boiler structure capable of efficiently alleviating or preventing corrosion and slagging on furnace walls in a furnace.
  • the present invention employs the following solutions.
  • a boiler structure according to the present invention is a circulating firing boiler structure configured so that fuel and combustion air supplied into a furnace from burners disposed at a plurality of positions on furnace walls forming a rectangular cross section are combusted so as to form a swirling flow. Air-supplying parts are disposed near flame-affected portions of furnace wall surfaces, where flames formed by the respective burners approach or contact, to form regions having a higher air concentration than the peripheries thereof.
  • the regions having a higher air concentration can be formed by supplying low-flow-rate air, which requires low auxiliary power, to regions where there is concern over corrosion or slagging on the furnace wall surfaces.
  • the regions having a higher air concentration are preferably formed so as to cover a reducing-combustion zone inside the furnace in a vertical direction. This allows the regions having a higher air concentration to be formed by supplying air at a low flow rate in upper and lower regions where there is concern over corrosion or slagging in the furnace.
  • the air-supplying parts preferably introduce low-pressure secondary burner air from the adjacent burners through bypass routes. This avoids a significant change in structure or an increase in the number of components, thus simplifying the structure.
  • the air-supplying parts are preferably disposed around deslagger nozzles.
  • the air-supplying parts can then form the regions having a higher air concentration on the furnace wall surfaces in regions where slagging tends to occur and can also cool the peripheries of deslagger-nozzle insertion units, which are exposed to severe thermal conditions.
  • the air-supplying parts supply air at a low flow rate to the vicinities of the flame-affected portions of the furnace walls, where there is concern over corrosion or slagging, in the furnace to form the regions having a higher air concentration than the peripheries thereof.
  • This boiler structure can therefore maintain a high oxygen concentration on and around the flame-affected portions without the need for a high auxiliary power for increasing the flow rate of the supplied air.
  • an air layer having a higher oxygen concentration is formed on and around the flame-affected portions in the furnace, so that the reducing atmosphere is partially replaced by an oxidizing atmosphere.
  • corrosion and slagging can efficiently be alleviated or prevented.
  • the above invention is particularly effective in alleviating slagging of coal-fired boilers and is particularly effective in improving corrosion resistance against hydrogen sulfide of boilers compatible with various fuels containing sulfur.
  • the air used by the air-supplying parts is low-pressure secondary burner air introduced from the adjacent burners through bypass routes, a significant change in boiler structure or an increase in the number of components can be minimized, thus simplifying the structure.
  • FIG. 1A is a horizontal sectional view of an embodiment of a boiler structure according to the present invention, showing a reducing-combustion zone in a furnace.
  • FIG. 1B is a perspective view of the embodiment of the boiler structure according the present invention, showing its schematic outline.
  • FIG. 2A is a sectional view of the furnace, showing an exemplary structure of an air-supplying part disposed on a deslagger-nozzle insertion unit.
  • FIG. 2B is a diagram as viewed from arrow A of FIG. 2A , showing the exemplary structure of the air-supplying part disposed on the deslagger-nozzle insertion unit.
  • FIG. 3A is a horizontal sectional view of a first modification of the boiler structure according to the present invention, showing a reducing-combustion zone in a furnace.
  • FIG. 3B is a perspective view of the first modification of the boiler structure according to the present invention, showing its schematic outline.
  • FIG. 4A is a horizontal sectional view of a second modification of the boiler structure according to the present invention, showing a reducing-combustion zone in a furnace.
  • FIG. 4B is a perspective view of the second modification of the boiler structure according to the present invention, showing its schematic outline.
  • FIG. 5 is a schematic longitudinal sectional view of a boiler structure that combusts fuel with combustion air supplied in multiple stages.
  • a boiler 10 combusts fuel by supplying combustion air into a furnace 11 in multiple stages to reduce NO x emissions.
  • the combustion air is supplied into the furnace 11 in two stages, that is, from burner portions Ba that are regions where a plurality of burners 12 are disposed and additional-air supplying portions Aa that are regions where additional-air supplying nozzles 13 are disposed above the burner portions Ba.
  • the two-stage combustion is performed in a reducing-combustion zone and a complete-combustion zone by initially supplying about 70% of the required amount of combustion air from the burner portions Ba before supplying the rest, namely, about 30%, from the additional-air supplying portions Aa.
  • the boiler 10 described above is a swirling-combustion boiler in which the furnace 11 has a rectangular cross section.
  • the swirling-combustion boiler 10 is configured so that fuel and combustion air supplied from the plurality of burners 12 , which are disposed on furnace walls 11 a , into the furnace 11 are combusted so as to form a swirling flame in the furnace 11 .
  • the burners 12 which are disposed at eight positions in a horizontal cross section, supply fuel and combustion air so as to form two adjacent swirling flows in the furnace 11 .
  • the boiler 10 includes air-supplying parts 20 disposed near flame-affected portions of the furnace wall surfaces (furnace walls 11 a ), where flames formed by the respective burners 12 approach or contact, to form regions having a higher air concentration than the peripheries thereof.
  • one air-supplying part 20 is provided at an appropriate position on each of the furnace walls 11 a , which form, for example, a rectangle; that is, a total of four air-supplying parts 20 are provided.
  • the formation of the regions having a higher air concentration means formation of regions having a higher oxygen concentration. In these regions, therefore, the reducing atmosphere is replaced by an oxidizing atmosphere.
  • the air-supplying parts 20 are provided on the furnace walls 11 a in the furnace 11 to supply air at a low flow rate from sites where there is concern over corrosion or slagging, thus forming the regions having a higher air concentration than the peripheries thereof substantially along the wall surfaces.
  • the regions having a higher air concentration than the peripheries thereof are formed not by supplying air toward the furnace walls 11 a in the regions where there is concern over corrosion or slagging at a relatively high flow rate (for example, 40 m/sec or more), but by supplying air from the air-supplying parts 20 provided on the furnace walls 11 a in the regions where there is concern over corrosion or slagging at a low flow rate (for example, about 10 m/sec).
  • the air-supplying parts 20 are nozzles for forming the regions having a higher air concentration by supplying low-pressure secondary burner air introduced from the adjacent burners 12 through bypass routes into the furnace 11 at a low flow rate.
  • the air supplied from the air-supplying parts 20 forms the regions having a higher air concentration along the furnace walls 11 a near the flame-affected portions.
  • the air-supplying parts 20 are provided in a plurality of stages in the vertical direction of the furnace 11 to cover the reducing-combustion zone inside the furnace in the vertical direction.
  • the air-supplying parts 20 are provided in the peripheries of the portions on the furnace walls 11 a where the flames approach or contact, at substantially the same heights as the burners 12 . This is because the flame-affected portions of the furnace walls 11 a are formed at substantially the same heights as the burners 12 since the flames are formed so as to extend from the burners 12 substantially in the horizontal direction.
  • the flame-affected portions of the furnace walls 11 a are formed at a plurality of positions in the vertical direction because the burners 12 in the reducing-combustion zone are usually provided in a plurality of stages in the vertical direction. Accordingly, the air-supplying parts 20 are provided in the vertical direction in the number of stages that is equal to the number of stages of the burners 12 , in other words, the number of stages of the flames formed in the vertical direction. This allows the regions having a higher air concentration to be formed by supplying air at a low flow rate in upper and lower regions where there is concern over corrosion or slagging in the furnace 11 .
  • the air supplied at a low flow rate from the air-supplying parts 20 provided near the flame-affected portions, which are formed by the burners 12 , of the furnace walls 11 a forms the regions having a higher air concentration than the peripheries thereof, so that the air functions as an air layer in the peripheries of the flame-affected portions to insulate the furnace walls 11 a from the flames.
  • low-flow-rate air which requires low auxiliary power
  • the air-supplying parts 20 supply the air from the vicinities of the flame-affected portions to the peripheries thereof. That is, high-pressure, high-flow-rate air does not have to be supplied using, for example, a compressor that operates with high power, unlike the case where the air is supplied toward a remote position.
  • the use of low-pressure secondary air introduced from the burners 12 reduces the auxiliary power and also avoids a significant change in structure or an increase in the number of components, thus simplifying the structure.
  • the air-supplying parts 20 are provided around deslagger nozzles 31 in deslagger-nozzle insertion units 30 between the burner portions Ba and the additional-air supplying portions Aa.
  • the deslagger-nozzle insertion units 30 are devices for removing slag deposited on the furnace walls 11 a .
  • the deslagger-nozzle insertion units 30 clean the furnace walls 11 a with steam ejected from the deslagger nozzles 31 , which are inserted in the furnace 11 .
  • FIGS. 2A and 2B An exemplary structure of the air-supplying parts 20 provided around the deslagger-nozzle insertion units 30 will now be described with reference to FIGS. 2A and 2B .
  • the deslagger nozzle 31 is attached to the deslagger-nozzle insertion unit 30 by inserting the deslagger nozzle 31 in a nozzle hole 32 extending through the furnace wall 11 a .
  • the deslagger nozzle 31 is supplied with steam to be ejected for removing slag through a steam duct 33 .
  • Reference numeral 34 in the drawing denotes a seal member provided between a nozzle body 21 of the air-supplying nozzle (air-supplying part) 20 , to be described below, and the deslagger nozzle 31 .
  • the air-supplying nozzle 20 has an air flow channel 22 formed of an annular space between the deslagger nozzle 31 and the nozzle hole 32 , and the nozzle body 21 has a circular flange 21 a at one end of its cylindrical shape and is attached to the furnace 11 .
  • the nozzle body 21 is fixed to, for example, the circumferential surface of the deslagger nozzle 31 with the seal member 34 disposed therebetween, and the flange 21 a in the furnace 11 faces the furnace wall 11 a so as to be substantially parallel thereto with a predetermined distance therebetween.
  • air supplied from the nozzle body 21 into the furnace 11 collides with the flange 21 a , thus flowing outward along the furnace wall 11 a around the entire circumference in the circumferential direction.
  • the air-supplying nozzle 20 has a wind box 23 provided outside the furnace 11 .
  • the wind box 23 communicates with the nozzle body 21 in the furnace 11 through the air flow channel 22 to supply air from an air supply 24 .
  • the air supply 24 used is preferably, for example, the low-pressure secondary air introduced from the burners 12 , although the primary air or compressed air may be used if necessary.
  • the air-supplying nozzle 20 can form a region having a higher air concentration along the furnace wall 11 a of the furnace 11 in a region where slagging tends to occur and can also cool the periphery of the deslagger-nozzle insertion unit 30 , which is exposed to severe thermal conditions. Accordingly, an air layer having a higher air concentration than the periphery thereof is formed around the furnace wall 11 a in a region where slagging tends to occur, so that a partial oxidizing atmosphere can prevent or alleviate corrosion of the wall surface, thus extending the life of the furnace wall.
  • the air supplied into the nozzle body 21 of the air-supplying part 20 flows beside the circumferential surface of the deslagger nozzle 31 .
  • the air flow can therefore cool, for example, the seal member 34 , which is exposed to severe thermal conditions.
  • the oxygen concentration is increased, thus creating an oxidizing atmosphere.
  • the oxidizing atmosphere can alleviate slagging because the melting temperature of slag is increased thereby.
  • the air-supplying parts 20 are disposed near the flame-affected portions of the furnace walls 11 a , where the flames formed by the respective burners 12 approach or contact, to form the regions having a higher air concentration than the peripheries thereof. Because the oxygen concentration is increased around the flame-affected portions, the reducing atmosphere is partially replaced by an oxidizing atmosphere. As a result, corrosion and slagging can be alleviated or prevented, thus extending the life of the wall surfaces.
  • This boiler structure is particularly effective in alleviating slagging of coal-fired boilers and is particularly effective in improving corrosion resistance of boilers compatible with various fuels containing sulfur.
  • the optimum positions of the air-supplying parts 20 in the horizontal cross section vary depending on the conditions, including the shape of the furnace 11 , the positions and number of the burners 12 , and the type of swirling flame formed. That is, the regions of the flame-affected portions of the furnace walls 11 a , where the flames formed by the respective burners 12 approach or contact, vary with, for example, the arrangement of the burners 12 and the type of swirling flame formed. Accordingly, the positional relationship between the burners 12 and the air-supplying parts 20 differs between different boiler structures, for example, the 8-cornered furnace shown in FIGS. 1A and 1B and 4-cornered furnaces shown in FIGS. 3A and 3B and FIGS. 4A and 4B .
  • the furnace 11 is rectangular, and four burners 12 are disposed on each of the two opposing long sides to form two swirling flows on the left and right.
  • the burners 12 are tilted toward substantially the centers of the respective swirling flows, that is, toward substantially the centers of squares formed by dividing the rectangle in half, so that the two swirling flows each have a substantially oval shape.
  • the flame-affected portions where the flames approach or contact, are formed near two corners and the centers of the long sides, and the air-supplying parts 20 are provided at four positions so as to cover these regions.
  • the furnace 11 is square, and the burners 12 are disposed at four positions offset from the centers of the respective sides to form a single swirling flow.
  • the swirling flow is formed by the offset of the burners 12 because the burners 12 are directed toward the opposite wall surfaces.
  • the flames flow toward the vicinities of the centers of the wall surfaces on the downstream side of the swirling flow under the effect of the flames formed on the upstream side.
  • the flame-affected portions are near the centers of the respective sides, and accordingly the air-supplying parts 20 are provided at four positions in the centers of the respective sides so as to cover these regions.
  • the furnace 11 is square, and the burners 12 are disposed at the four corners to form a single swirling flow.
  • the flame-affected portions are near the centers of the respective sides, and accordingly the air-supplying parts 20 are provided at four positions in the centers of the respective sides so as to cover these regions.
  • the optimum positions of the air-supplying parts 20 may be selected on the basis of, for example, the arrangement of the burners 12 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Air Supply (AREA)
US12/811,901 2008-01-23 2008-06-19 Boiler structure Abandoned US20100279239A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2008-012503 2008-01-23
JP2008012503A JP5022248B2 (ja) 2008-01-23 2008-01-23 ボイラ構造
PCT/JP2008/061193 WO2009093347A1 (fr) 2008-01-23 2008-06-19 Structure de chaudière

Publications (1)

Publication Number Publication Date
US20100279239A1 true US20100279239A1 (en) 2010-11-04

Family

ID=40900863

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/811,901 Abandoned US20100279239A1 (en) 2008-01-23 2008-06-19 Boiler structure

Country Status (12)

Country Link
US (1) US20100279239A1 (fr)
EP (1) EP2233833B1 (fr)
JP (1) JP5022248B2 (fr)
CN (1) CN101925780B (fr)
BR (1) BRPI0822013B1 (fr)
CL (1) CL2008002173A1 (fr)
ES (1) ES2706022T3 (fr)
MX (1) MX2010007776A (fr)
MY (1) MY152332A (fr)
RU (1) RU2461773C2 (fr)
TW (1) TWI434011B (fr)
WO (1) WO2009093347A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102777880A (zh) * 2012-07-19 2012-11-14 浙江省电力公司电力科学研究院 一种防止电站锅炉高温腐蚀的可调式热空气装置
US20140004475A1 (en) * 2011-03-15 2014-01-02 Ns Plant Designing Corporation Top-firing hot blast stove
US9017068B2 (en) 2011-03-23 2015-04-28 Nippon Steel & Sumikin Engineering Co., Ltd. Top-firing hot blast stove
CN106871113A (zh) * 2017-04-07 2017-06-20 贵州电网有限责任公司电力科学研究院 一种对冲切圆燃烧方式电站锅炉的燃烧器型式的选择方法
CN106871112A (zh) * 2017-04-07 2017-06-20 贵州电网有限责任公司电力科学研究院 一种冲切圆燃烧方式电站锅炉的燃烧器和磨煤机匹配方法
CN112413635A (zh) * 2020-11-17 2021-02-26 华能沁北发电有限责任公司 一种锅炉水冷壁高温腐蚀保护装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP5530373B2 (ja) 2011-01-12 2014-06-25 バブコック日立株式会社 ボイラ装置
JP6109718B2 (ja) * 2013-11-15 2017-04-05 三菱日立パワーシステムズ株式会社 ボイラ

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5205226A (en) * 1992-03-13 1993-04-27 The Babcock & Wilcox Company Low NOx burner system
JPH05215305A (ja) * 1992-01-31 1993-08-24 Mitsubishi Heavy Ind Ltd 微粉固体燃料燃焼装置
US6112676A (en) * 1997-07-24 2000-09-05 Hitachi, Ltd. Pulverized coal burner
US6152051A (en) * 1996-08-22 2000-11-28 Babcock-Hitachi Kabushiki Kaisha Powered fuel combustion burner with nozzle flow guide
JP2001012703A (ja) * 1999-06-30 2001-01-19 Babcock Hitachi Kk バーナと該バーナを備えた燃焼装置
US6237513B1 (en) * 1998-12-21 2001-05-29 ABB ALSTROM POWER Inc. Fuel and air compartment arrangement NOx tangential firing system
JP2002323215A (ja) * 2001-04-26 2002-11-08 Ishikawajima Harima Heavy Ind Co Ltd ボイラ灰除去装置
US7175423B1 (en) * 2000-10-26 2007-02-13 Bloom Engineering Company, Inc. Air staged low-NOx burner
US20070092847A1 (en) * 2003-11-10 2007-04-26 Babcock-Hitachi K.K. Solid Fuel Burner, Solid Fuel Burner Combustion Method, Combustion Apparatus and Combustion Apparatus Operation Method
US7484956B2 (en) * 2003-09-16 2009-02-03 Praxair Technology, Inc. Low NOx combustion using cogenerated oxygen and nitrogen streams
US7553153B2 (en) * 2005-01-05 2009-06-30 Babcock - Hitachi K.K. Burner and combustion method for solid fuels

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI79403C (fi) * 1984-06-01 1989-12-11 Ahlstroem Oy Foerbraenningsmetod.
JPS62131106A (ja) * 1985-12-04 1987-06-13 Mitsubishi Heavy Ind Ltd 蒸気発生装置の燃焼方法
SU1437613A1 (ru) * 1986-07-09 1988-11-15 Красноярский Политехнический Институт Топка
RU2032125C1 (ru) * 1989-04-06 1995-03-27 Калинин Дмитрий Сергеевич Предтопок
JP2540636B2 (ja) * 1989-11-20 1996-10-09 三菱重工業株式会社 ボイラ
JP3030511B2 (ja) * 1990-10-05 2000-04-10 バブコツク日立株式会社 ボイラ装置及びその運転方法
RU2032853C1 (ru) * 1992-09-01 1995-04-10 Сибирский филиал Всероссийского теплотехнического научно-исследовательского института Призматическая экранированная топка
JPH07119923A (ja) * 1993-10-26 1995-05-12 Mitsubishi Heavy Ind Ltd 微粉炭焚きボイラの燃焼装置
JPH0921506A (ja) * 1995-07-05 1997-01-21 Babcock Hitachi Kk 微粉炭燃焼装置および微粉炭燃焼方法
DE19749431C1 (de) * 1997-11-08 1999-03-18 Steinmueller Gmbh L & C Verfahren zum Verbrennen von Brennstoffstaub in einer Tangentialfeuerung und Tangentialfeuerung zur Durchführung des Verfahrens
JPH11237003A (ja) * 1998-02-19 1999-08-31 Ishikawajima Harima Heavy Ind Co Ltd 火炉の腐食防止装置
JP2005030675A (ja) * 2003-07-11 2005-02-03 Ishikawajima Harima Heavy Ind Co Ltd ボイラ火炉のバウンダリー空気供給装置
RU2303203C1 (ru) * 2006-06-29 2007-07-20 Закрытое акционерное общество Акционерная фирма "Перспектива" Опытно-механический завод Газогенератор с водяным котлом

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05215305A (ja) * 1992-01-31 1993-08-24 Mitsubishi Heavy Ind Ltd 微粉固体燃料燃焼装置
US5205226A (en) * 1992-03-13 1993-04-27 The Babcock & Wilcox Company Low NOx burner system
US6152051A (en) * 1996-08-22 2000-11-28 Babcock-Hitachi Kabushiki Kaisha Powered fuel combustion burner with nozzle flow guide
US6112676A (en) * 1997-07-24 2000-09-05 Hitachi, Ltd. Pulverized coal burner
US6237513B1 (en) * 1998-12-21 2001-05-29 ABB ALSTROM POWER Inc. Fuel and air compartment arrangement NOx tangential firing system
JP2001012703A (ja) * 1999-06-30 2001-01-19 Babcock Hitachi Kk バーナと該バーナを備えた燃焼装置
US7175423B1 (en) * 2000-10-26 2007-02-13 Bloom Engineering Company, Inc. Air staged low-NOx burner
JP2002323215A (ja) * 2001-04-26 2002-11-08 Ishikawajima Harima Heavy Ind Co Ltd ボイラ灰除去装置
US7484956B2 (en) * 2003-09-16 2009-02-03 Praxair Technology, Inc. Low NOx combustion using cogenerated oxygen and nitrogen streams
US20070092847A1 (en) * 2003-11-10 2007-04-26 Babcock-Hitachi K.K. Solid Fuel Burner, Solid Fuel Burner Combustion Method, Combustion Apparatus and Combustion Apparatus Operation Method
US7553153B2 (en) * 2005-01-05 2009-06-30 Babcock - Hitachi K.K. Burner and combustion method for solid fuels

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140004475A1 (en) * 2011-03-15 2014-01-02 Ns Plant Designing Corporation Top-firing hot blast stove
US9518306B2 (en) * 2011-03-15 2016-12-13 Nippon Steel & Sumikin Engineering Co., Ltd Top-firing hot blast stove
US9017068B2 (en) 2011-03-23 2015-04-28 Nippon Steel & Sumikin Engineering Co., Ltd. Top-firing hot blast stove
CN102777880A (zh) * 2012-07-19 2012-11-14 浙江省电力公司电力科学研究院 一种防止电站锅炉高温腐蚀的可调式热空气装置
CN106871113A (zh) * 2017-04-07 2017-06-20 贵州电网有限责任公司电力科学研究院 一种对冲切圆燃烧方式电站锅炉的燃烧器型式的选择方法
CN106871112A (zh) * 2017-04-07 2017-06-20 贵州电网有限责任公司电力科学研究院 一种冲切圆燃烧方式电站锅炉的燃烧器和磨煤机匹配方法
CN112413635A (zh) * 2020-11-17 2021-02-26 华能沁北发电有限责任公司 一种锅炉水冷壁高温腐蚀保护装置

Also Published As

Publication number Publication date
TW200933091A (en) 2009-08-01
EP2233833A4 (fr) 2016-04-13
CN101925780A (zh) 2010-12-22
MX2010007776A (es) 2010-08-09
BRPI0822013A2 (pt) 2015-07-21
JP2009174751A (ja) 2009-08-06
MY152332A (en) 2014-09-15
EP2233833B1 (fr) 2018-10-24
WO2009093347A1 (fr) 2009-07-30
CN101925780B (zh) 2013-01-09
BRPI0822013B1 (pt) 2020-02-04
RU2010129771A (ru) 2012-02-27
EP2233833A1 (fr) 2010-09-29
CL2008002173A1 (es) 2009-11-13
ES2706022T3 (es) 2019-03-27
JP5022248B2 (ja) 2012-09-12
RU2461773C2 (ru) 2012-09-20
TWI434011B (zh) 2014-04-11

Similar Documents

Publication Publication Date Title
US20100279239A1 (en) Boiler structure
US9447969B2 (en) Low NOx combustion process and burner therefor
US9702545B2 (en) Oil-fired burner, solid fuel-fired burner unit, and solid fuel-fired boiler
CN103968374B (zh) 燃氧耦合燃烧和再循环系统
JP4750174B2 (ja) 拡散燃焼装置
US7694637B2 (en) Method and apparatus for a simplified primary air system for improving fluid flow and gas mixing in recovery boilers
JP5501198B2 (ja) 低ＮＯｘ・低煤塵燃焼方法およびボイラ燃焼室
CN211176782U (zh) 燃烧器
EP3479021B1 (fr) Four à lit fluidisé bouillonnant
JP2010139182A (ja) 旋回燃焼ボイラ
JP5800423B2 (ja) バーナおよびこれを備えたボイラ
JP4647837B2 (ja) 石炭焚きボイラおよび石炭焚きボイラのスラッギング防止方法
TWI738316B (zh) 火爐及具備此之鍋爐
KR20180033735A (ko) 단일 단으로 구성된 메인 ofa 포트 및 사이드 ofa 포트를 포함하는 연소로 및 이를 포함하는 발전소 보일러
CN209893390U (zh) 一种无需增设中心枪的分级燃烧低NOx气体燃烧器
JP2007192475A (ja) ボイラ装置とその運転方法
CN115585452A (zh) 低氮燃烧器及烟道加热装置
JP2015096788A (ja) ボイラ
JP5206043B2 (ja) ボイラ装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: MITSUBISHI HEAVY INDUSTRIES, LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TAKASHIMA, RYUHEI;DAIMARU, TAKUICHIRO;KOMADA, SHIGEHIDE;REEL/FRAME:024675/0732

Effective date: 20100622

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION