US20090305179A1 - Steam-Generator Furnace - Google Patents

Steam-Generator Furnace Download PDF

Info

Publication number
US20090305179A1
US20090305179A1 US11/921,478 US92147805A US2009305179A1 US 20090305179 A1 US20090305179 A1 US 20090305179A1 US 92147805 A US92147805 A US 92147805A US 2009305179 A1 US2009305179 A1 US 2009305179A1
Authority
US
United States
Prior art keywords
furnace
burners
secondary air
external
steam generator
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
US11/921,478
Other languages
English (en)
Inventor
Felix Anatolievich Serant
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.)
ZAKRYTOE AKTSIONERNOE OBSCHESTVO "KOTES-SIBIR"
ZAKRYTOE AKTSIONERNOE OBSCHESTVO OTES SIBIR
Original Assignee
ZAKRYTOE AKTSIONERNOE OBSCHESTVO OTES SIBIR
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 ZAKRYTOE AKTSIONERNOE OBSCHESTVO OTES SIBIR filed Critical ZAKRYTOE AKTSIONERNOE OBSCHESTVO OTES SIBIR
Assigned to ZAKRYTOE AKTSIONERNOE OBSCHESTVO "KOTES-SIBIR" reassignment ZAKRYTOE AKTSIONERNOE OBSCHESTVO "KOTES-SIBIR" ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SERANT, FELIX ANATOLIEVICH
Publication of US20090305179A1 publication Critical patent/US20090305179A1/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 
    • F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
    • F23C5/02—Structural details of mounting
    • F23C5/06—Provision for adjustment of burner position during operation
    • 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 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/006—Combustion apparatus characterised by the shape of the combustion chamber the chamber being arranged for cyclonic combustion
    • 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 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/03003—Annular combustion chambers

Definitions

  • the utility model relates to furnace systems in heavy-duty power-generating units, and can be used in the thermoelectric power industry.
  • a boiler furnace consisting of internal and external tubular screens that are designed as two concentrically mounted, equilateral prisms, wherein burners are set up on each face of the last of the screens tangentially to some conditional periphery (RU 909418, F23C 5/08, 1982).
  • the burners In one known device for generating a vortical furnace flame for a specific type of fuel, the burners must be arranged in a specific manner relative to the screens. Since the burners are fixed in place in the known device, the latter is strictly “tied” to a specific type and even sort of fuel, which is one of its practical shortcomings.
  • a steam generator furnace (RU 953366, F23C 5/08, 1982) with a vertical annular combustion chamber consisting of external and internal tubular screens that are designed as concentrically mounted, equilateral prisms, wherein the lower portion of the screen face incorporates respective tangential burners and secondary air nozzles, with the latter being mounted in line with the burners.
  • a known technical solution involving nozzles arranged on the outer wall of the furnace involves the supply of all secondary air introduced into the furnace apart from the burners. This diminishes the heat absorption of the internal screen and, as a result, reduces furnace efficiency, which is a second of its shortcomings.
  • Feeding all secondary air into the lower portion of the furnace increases emissions of nitrogen oxides, which is also a shortcoming with respect to the known technical solution.
  • the furnace has large dimensions, and requires elevated capital expenditures for outfitting purposes.
  • the proposed utility model resolves the task of eliminating the aforementioned shortcomings using a specific furnace design.
  • various types of fuel can be optimally combusted, furnace efficiency can be increased, nitrogen oxide emissions can be cut, and furnace dimensions can be cut.
  • burners are movably incorporated in the steam generator furnace with a vertical annular combustion chamber consisting of internal and external tubular screens that are designed as concentrically mounted, equilateral prisms, wherein the lower portion of their faces accommodates burners tangential to the conditional periphery, and secondary air nozzles, making it possible to regulate the diameter of the conditional periphery within a range of 0.4-0.7 D, where D is the diameter of a periphery entered in the cross section of the prism of the external screen, and the secondary air nozzles are mounted on two tiers over the height of the furnace.
  • the first tier of secondary air nozzles is located at the burner level on the faces of the external screen, while the second tier is situated in the upper portion of the furnace on the faces of the external and internal screens; the nozzles in the first tier are directed in line with the burners, while those in the second run counter to the burners.
  • FIG. 1 presents a vertical section of the claimed furnace
  • FIG. 2 shows a section AA of FIG. 1 .
  • the furnace contains a combustion chamber 1 , external screen 2 and internal screen 3 , secondary air nozzles 5 (first tier) and 6 (second tier).
  • the furnace operates as follows.
  • the fuel-air mixture passes through the burners 4 into chamber 1 , where they undergo combustion.
  • the burners are mounted tangentially to some conditional periphery, the diameter of which depends on the physicochemical properties of the fuel.
  • Movably mounting the burners makes it possible to regulate the diameter of the conditional periphery, and thereby optimize the combustion conditions for a specific sort of used fuel.
  • the range of regulation measures 0.4-0.7 D, where D is the diameter of a periphery entered in the cross section of the prism of the external screen, which ensures an efficient, optimal combustion of coal from practically all known coal deposits.
  • the secondary air nozzles 5 set up on the furnace faces at the burner level create a system of incremental horizontal secondary air supply, which provides the furnace with a symmetrical aerodynamic while eliminating individual grinders and lowering NO x emissions.
  • the burners are set up in such a way that the aeromixture jet exits on the side of the flame, while the secondary air jet exits form the external screen.
  • the secondary air nozzles 6 set up in the upper portion of the furnace on the second tier ensure that the residual twists of exiting gases are extinguished, and consequently, that the heating surfaces in the gas duct are uniformly cleaned.
  • the table below presents comparative technical and economic indices for furnace assemblies based on the proposed furnace and a known furnace.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
US11/921,478 2005-06-03 2005-12-20 Steam-Generator Furnace Abandoned US20090305179A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
RU2005119144 2005-06-03
RU2005119144 2005-06-03
PCT/RU2005/000689 WO2006130041A1 (fr) 2005-06-03 2005-12-20 Chaudiere d'un generateur de vapeur

Publications (1)

Publication Number Publication Date
US20090305179A1 true US20090305179A1 (en) 2009-12-10

Family

ID=37481887

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/921,478 Abandoned US20090305179A1 (en) 2005-06-03 2005-12-20 Steam-Generator Furnace

Country Status (3)

Country Link
US (1) US20090305179A1 (de)
EP (1) EP1898150A4 (de)
WO (1) WO2006130041A1 (de)

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US68706A (en) * 1867-09-10 Improved apparatus for burning petroleum as fuel
US1816434A (en) * 1923-11-06 1931-07-28 Fuller Lehigh Co Apparatus for burning fuel
US2883948A (en) * 1952-08-07 1959-04-28 Babcock & Wilcox Co Combustion chamber with combined pulverized fuel and gas firing
US4294178A (en) * 1979-07-12 1981-10-13 Combustion Engineering, Inc. Tangential firing system
SU953366A1 (ru) * 1981-02-02 1982-08-23 Московский Ордена Ленина И Ордена Октябрьской Революции Энергетический Институт Топка парогенератора
US4672900A (en) * 1983-03-10 1987-06-16 Combustion Engineering, Inc. System for injecting overfire air into a tangentially-fired furnace
US4687436A (en) * 1986-08-05 1987-08-18 Tadao Shigeta Gasified fuel combustion apparatus
US5146858A (en) * 1989-10-03 1992-09-15 Mitsubishi Jukogyo Kabushiki Kaisha Boiler furnace combustion system
US5199357A (en) * 1991-03-25 1993-04-06 Foster Wheeler Energy Corporation Furnace firing apparatus and method for burning low volatile fuel
US5441000A (en) * 1994-04-28 1995-08-15 Vatsky; Joel Secondary air distribution system for a furnace
US5461990A (en) * 1994-08-11 1995-10-31 Foster Wheeler Energy Corporation Mounting and linkage system for burners in a furnace
US5746143A (en) * 1996-02-06 1998-05-05 Vatsky; Joel Combustion system for a coal-fired furnace having an air nozzle for discharging air along the inner surface of a furnace wall
US5899172A (en) * 1997-04-14 1999-05-04 Combustion Engineering, Inc. Separated overfire air injection for dual-chambered furnaces
US6145454A (en) * 1999-11-30 2000-11-14 Duke Energy Corporation Tangentially-fired furnace having reduced NOx emissions
US6260491B1 (en) * 1999-09-13 2001-07-17 Foster Wheeler Corporation Nozzle for feeding combustion providing medium into a furnace
US6269755B1 (en) * 1998-08-03 2001-08-07 Independent Stave Company, Inc. Burners with high turndown ratio
EP1219894A1 (de) * 1998-07-29 2002-07-03 Mitsubishi Heavy Industries, Ltd. Kohlenstaubbrenner
US20040185401A1 (en) * 2003-03-19 2004-09-23 Goran Moberg Mixing process for combustion furnaces

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU909418A1 (ru) * 1980-04-07 1982-02-28 Предприятие "Сибтехэнерго"Производственного Объединения По Наладке,Совершенствованию Технологии И Эксплуатации Электростанций И Сетей "Союзтехэнерго" Вертикальна топка котла
SU1666857A1 (ru) * 1989-07-18 1991-07-30 Сибирский Филиал Всесоюзного Теплотехнического Института Им.Ф.Э.Дзержинского Пылеугольна топка

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US68706A (en) * 1867-09-10 Improved apparatus for burning petroleum as fuel
US1816434A (en) * 1923-11-06 1931-07-28 Fuller Lehigh Co Apparatus for burning fuel
US2883948A (en) * 1952-08-07 1959-04-28 Babcock & Wilcox Co Combustion chamber with combined pulverized fuel and gas firing
US4294178A (en) * 1979-07-12 1981-10-13 Combustion Engineering, Inc. Tangential firing system
US4294178B1 (de) * 1979-07-12 1992-06-02 Combustion Eng
SU953366A1 (ru) * 1981-02-02 1982-08-23 Московский Ордена Ленина И Ордена Октябрьской Революции Энергетический Институт Топка парогенератора
US4672900A (en) * 1983-03-10 1987-06-16 Combustion Engineering, Inc. System for injecting overfire air into a tangentially-fired furnace
US4687436A (en) * 1986-08-05 1987-08-18 Tadao Shigeta Gasified fuel combustion apparatus
US5146858A (en) * 1989-10-03 1992-09-15 Mitsubishi Jukogyo Kabushiki Kaisha Boiler furnace combustion system
US5199357A (en) * 1991-03-25 1993-04-06 Foster Wheeler Energy Corporation Furnace firing apparatus and method for burning low volatile fuel
US5441000A (en) * 1994-04-28 1995-08-15 Vatsky; Joel Secondary air distribution system for a furnace
US5461990A (en) * 1994-08-11 1995-10-31 Foster Wheeler Energy Corporation Mounting and linkage system for burners in a furnace
US5746143A (en) * 1996-02-06 1998-05-05 Vatsky; Joel Combustion system for a coal-fired furnace having an air nozzle for discharging air along the inner surface of a furnace wall
US5899172A (en) * 1997-04-14 1999-05-04 Combustion Engineering, Inc. Separated overfire air injection for dual-chambered furnaces
EP1219894A1 (de) * 1998-07-29 2002-07-03 Mitsubishi Heavy Industries, Ltd. Kohlenstaubbrenner
US6269755B1 (en) * 1998-08-03 2001-08-07 Independent Stave Company, Inc. Burners with high turndown ratio
US6260491B1 (en) * 1999-09-13 2001-07-17 Foster Wheeler Corporation Nozzle for feeding combustion providing medium into a furnace
US6145454A (en) * 1999-11-30 2000-11-14 Duke Energy Corporation Tangentially-fired furnace having reduced NOx emissions
US20040185401A1 (en) * 2003-03-19 2004-09-23 Goran Moberg Mixing process for combustion furnaces

Also Published As

Publication number Publication date
WO2006130041A1 (fr) 2006-12-07
EP1898150A1 (de) 2008-03-12
EP1898150A4 (de) 2010-08-11

Similar Documents

Publication Publication Date Title
WO2013071713A1 (zh) 单火球八角直流燃烧器煤粉浓淡分离布置结构
WO2014127617A1 (zh) 双火球八角直流燃烧器煤粉浓淡分离布置方式
CN102252320A (zh) 生物质低氮直燃锅炉
KR101440354B1 (ko) 고온가스의 체류시간이 연장되는 ｆｒｄｆ 신속 고열분해 부유 연소식 파워 스팀 제네레이터
CN104633652A (zh) 一种前后墙对冲燃烧锅炉的燃烧系统
CN105219438B (zh) 一种生产生物质炭的气化炉
CN104990069A (zh) 一种提高前后墙对冲燃烧锅炉安全性和经济性的燃烧系统
CN105783025A (zh) 一种监测低NOx切向燃煤锅炉炉内风粉分布的方法
CN110345470A (zh) 一种循环流化床锅炉炉内脱硝工艺
CN100434797C (zh) 一种煤粉锅炉的低氮氧化物的燃烧方法
EP0238907B1 (de) Tangentialfeuerung mit niedrigem Luftüberschuss
CN201215311Y (zh) 可调式偏置射流直流煤粉燃烧器
CN103104911B (zh) 一种三级燃尽风布置方式
US20090305179A1 (en) Steam-Generator Furnace
CN101297156B (zh) 燃烧室的烧嘴装置，相关的燃烧室及燃料的燃烧方法
Purnomo et al. Numerical study on in-furnace blending coal combustion characteristics in a 625 MW tangentially fired pulverized coal boiler
RU61842U1 (ru) Топка парогенератора
CN107228358B (zh) 一种双台阶拱形w火焰锅炉炉膛结构
CN101709870B (zh) 一种燃油或燃气的单火球直流燃烧器六角或八角切圆布置
Marishin et al. Low-NO x Firing Systems with Swirl Burners Installed on Boilers PK-39-IIM and BKZ-420-140-5
CN204254662U (zh) 采取分段送风的锅炉
JP3140180B2 (ja) ボイラ
CN104390229B (zh) 采取分段送风的锅炉的送风方法
CN109442400A (zh) 一种驻涡式烟气内循环低氮燃烧器
CN112856375B (zh) 富氧燃烧锅炉

Legal Events

Date Code Title Description
AS Assignment

Owner name: ZAKRYTOE AKTSIONERNOE OBSCHESTVO "KOTES-SIBIR", RU

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SERANT, FELIX ANATOLIEVICH;REEL/FRAME:022869/0160

Effective date: 20080121

STCB Information on status: application discontinuation

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