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WO2006016833A1 - Four a turbulence - Google Patents

Four a turbulence Download PDF

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Publication number
WO2006016833A1
WO2006016833A1 PCT/RU2005/000084 RU2005000084W WO2006016833A1 WO 2006016833 A1 WO2006016833 A1 WO 2006016833A1 RU 2005000084 W RU2005000084 W RU 2005000084W WO 2006016833 A1 WO2006016833 A1 WO 2006016833A1
Authority
WO
WIPO (PCT)
Prior art keywords
combustion chamber
burner
nozzle
wall
fuel
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.)
Ceased
Application number
PCT/RU2005/000084
Other languages
English (en)
Russian (ru)
Inventor
Konstantin Anatolievich Grigoriev
Vitaly Efimovich Skuditsky
Yury Alexandrovich Rundygin
Alexandr Lvovich Popov
Andrei Pavlovich Tokunov
Alexei Alexandrovich Trinchenko
Farid Rinatovich Valiev
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to UAA200700976A priority Critical patent/UA83761C2/uk
Priority to EA200602190A priority patent/EA008691B1/ru
Publication of WO2006016833A1 publication Critical patent/WO2006016833A1/fr
Anticipated expiration legal-status Critical
Ceased 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 
    • 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
    • F23C5/24—Disposition of burners to obtain a loop flame
    • 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

Definitions

  • the present invention relates to the field of fuel combustion, in particular, to swirl furnaces and can be used for burning solid fossil fuels, for example, in power plants.
  • a vortex furnace containing a combustion chamber, including walls passing at the bottom into a funnel, at least one burner mounted on the wall, and also air nozzles, one of which is installed at the bottom of the funnel, and its longitudinal axis directed towards the burner, and the other on the wall of the combustion chamber opposite the burner, at a height level below the burner, SU, A2, 1588986.
  • This technical solution taken as a prototype of the present invention, provides an increase in the completeness of fuel combustion and thereby increases the efficiency of the furnace, as well as reducing deposits (slag) on the walls of the furnace, which increases the reliability of its operation.
  • This circumstance narrows the range of regulation of the distribution of fuel over the volume of the combustion chamber, which makes it difficult to equalize the temperature field in the furnace.
  • the present invention is based on the solution of the problem of increasing the degree of fuel burnup, as well as leveling the temperature field in the combustion chamber, which leads to a decrease in the intensity of deposits on the walls of the combustion chamber, a decrease in the generation of nitrogen oxides and an increase in the degree of binding of sulfur oxides.
  • this problem is solved due to the fact that in a vortex furnace containing a combustion chamber, including walls passing at the bottom into a funnel, at least one burner mounted in the wall of the combustion chamber, as well as an air supply nozzle, one of which are set at the bottom parts of the funnel, and the other on the wall of the combustion chamber opposite the burner, at a height level below the burner, the nozzle is mounted on the wall of the combustion chamber so that its longitudinal axis intersects the funnel wall located on the nozzle side; on the wall of the combustion chamber opposite the burner, an additional nozzle can be installed at a level above the burner; the longitudinal axis of the additional nozzle may be an angle of 30 ... 135 ° relative to the wall of the combustion chamber.
  • the object acquires a very important new property, which consists in the fact that the air flows coming out of the nozzles (a nozzle installed in the lower part of the funnel and a nozzle mounted in the wall of the combustion chamber opposite the burner at a height level below the burner ), intensively interact with each other in the lower part of the combustion chamber, which leads to a stable and intense vortex motion of the combustion medium in it.
  • This circumstance provides a more uniform distribution of fuel in the volume of the combustion chamber over a wide range of loads, which leads to a more complete burnout of the fuel in the furnace, as well as equalization of the temperature field in the combustion chamber (reduction of high-temperature maximum zones), which significantly reduces the formation of nitrogen oxides and increases the degree of binding sulfur oxides, and also prevents the deposition of fusible eutectics on the walls of the combustion chamber.
  • the vortex furnace contains a combustion chamber 1, which includes walls 2 passing into the funnel 3 in the lower part.
  • a burner 4 is mounted in one of the walls 2 of the combustion chamber 1, which in a specific example is inclined toward the funnel 3.
  • a nozzle 5 is installed in the lower part of the funnel 3 to supply air to the lower part of the combustion chamber 1.
  • combustion chamber 1 may be provided with an additional nozzle 7 for supplying air mounted on the wall 2 of the combustion chamber 1, opposite the burner 4; the longitudinal axis of the additional nozzle 7 makes an angle
  • the swirl chamber works as follows:
  • the fuel-air mixture consisting of crushed fuel and air, is fed by means of a burner 4 into the internal space of the combustion chamber 1.
  • the air necessary for burning fuel is supplied to the lower part of the combustion chamber 1 in two streams: through a nozzle 5 installed in the lower part of the funnel 3 and a nozzle 6 mounted on the wall 2 of the combustion chamber 1, opposite the burner 4, at a height level below the burner 4, and in the upper part of the combustion chamber 1 through an additional nozzle 7 mounted on the wall 2 of the chamber 1 combustion, opposite the burner 4, at a height above the burner 4.
  • the amount of movement (flow, speed) of air from the burner 4, nozzles 5, 6 and the additional nozzle 7 are selected so as to ensure separation and distribution of fuel particles of different sizes (fractions ) by volume (height) of the combustion chamber 1.
  • the fuel-air mixture inside the combustion chamber 1 ignites and forms a burning torch 8, in which the smallest particles of fuel are burned. Part of unburned fuel particles under the influence of gravitational and inertial forces is separated into the lower part of the combustion chamber 1, namely, into its vortex combustion zone 9.
  • the air flow from the nozzle 6 is pressed against the wall of the funnel 3 due to the fact that the longitudinal axis 10 of this nozzle intersects the wall of the funnel 3 and interacts with the air flow from the nozzle 5, which leads to the formation of a stable and intense circulation circuit of burning fuel particles in the vortex combustion zone 9, and, accordingly, helps to increase the proportion of fuel entering the lower part of the combustion chamber 1, which leads to an increase in the stability of ignition and the intensity of fuel combustion in the lower part of the combustion chamber 1.
  • the air stream leaving the additional nozzle 7 gives a pulse in the direction of the longitudinal axis of this nozzle to sufficiently large particles of fuel that have not yet had time to burn in the flame 8, and contributes to their separation from the flame 8 to the wall 2 of the chamber 1 opposite from the additional nozzle 7. combustion; these particles under the influence of gravitational forces and a suction effect enter the flow of the fuel-air mixture supplied to the combustion chamber 1 from the burner 4, which leads to an increase in the degree of fuel burnout in the torch 8 and thereby increases the efficiency of the device.
  • the air stream leaving the additional nozzle 7 enriches the torch 8 with oxygen, which provides more intensive combustion of fuel particles, as well as gaseous products of incomplete combustion in this part of the combustion chamber 1, creates an oxidizing zone, which reduces the likelihood of deposits on the walls 2 combustion chambers 1, which increases the reliability of its operation.
  • the generally lower temperature level in the volume of the combustion chamber 1 reduces the formation of nitrogen oxides.
  • the same circumstance combined with multiple circulation ash particles in the vortex zone 9 leads to a significant increase in the binding of sulfur oxides. Thus, improving the environmental performance of the device.
  • the invention can be used, practically, for the entire range of solid fossil fuels in a wide range of changes in its quality characteristics and particle size distribution, can improve the efficiency, reliability and safety of the furnace by reducing the likelihood of deposits on its walls (their slagging), and to reduce the formation of nitrogen oxides by reducing and equalizing the overall temperature level in the furnace, and to increase the binding of sulfur oxides to the main oxides of the mineral part of the fuel by increasing the rate of chemical reactions at lower temperature level.

Landscapes

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

Abstract

La présente invention se rapporte à la combustion de combustible, et en particulier à des fours à turbulence, et peut servir à la combustion de combustible organique solide dans des centrales électriques. Le but de l'invention est d'augmenter le degré de combustion du combustible, ainsi que d'égaliser le champ de température dans la chambre de combustion, ce qui permet de réduire la vitesse d'accumulation de dépôts sur les parois de la chambre de combustion, de réduire la génération d'oxydes d'azote, et d'augmenter le niveau de liaison des oxydes de soufre. Le four à turbulence selon l'invention comprend une chambre de combustion possédant des parois se formant progressivement un entonnoir dans la partie inférieure, au moins un brûleur monté dans la paroi de la chambre de combustion, et des buses d'amenée d'air, dont l'une est placée dans la partie inférieure de l'entonnoir, et l'autre est disposée sur la paroi de la chambre de combustion qui est opposée au brûleur et à une hauteur inférieure à celle de ce dernier, de façon que son axe longitudinal traverse la paroi de l'entonnoir située du côté de la buse. La paroi de la chambre de combustion qui est opposée au brûleur peut être dotée d'une buse supplémentaire placée à une hauteur supérieure à celle du brûleur. L'axe longitudinal de ladite buse supplémentaire peut former un angle de 30 à 135° par rapport à la paroi de la chambre de combustion.
PCT/RU2005/000084 2004-07-12 2005-02-21 Four a turbulence Ceased WO2006016833A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
UAA200700976A UA83761C2 (en) 2004-07-12 2005-02-21 Vortex furnace
EA200602190A EA008691B1 (ru) 2004-07-12 2005-02-21 Вихревая топка

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2004121805 2004-07-12
RU2004121805/06A RU2253801C1 (ru) 2004-07-12 2004-07-12 Вихревая топка

Publications (1)

Publication Number Publication Date
WO2006016833A1 true WO2006016833A1 (fr) 2006-02-16

Family

ID=35834570

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2005/000084 Ceased WO2006016833A1 (fr) 2004-07-12 2005-02-21 Four a turbulence

Country Status (4)

Country Link
EA (1) EA008691B1 (fr)
RU (1) RU2253801C1 (fr)
UA (1) UA83761C2 (fr)
WO (1) WO2006016833A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU197085U1 (ru) * 2020-01-14 2020-03-30 Михаил Евгеньевич Пузырев Низкотемпературная вихревая топка
RU208257U1 (ru) * 2021-06-24 2021-12-10 Федеральное государственное бюджетное образовательное учреждение высшего образования «Череповецкий государственный университет» Вихревая топка

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1089354A1 (ru) * 1982-11-18 1984-04-30 Московский Ордена Ленина И Ордена Октябрьской Революции Энергетический Институт Факельно-вихрева топка
SU1244427A1 (ru) * 1985-01-23 1986-07-15 Московский Ордена Ленина И Ордена Октябрьской Революции Энергетический Институт Факельно-вихрева топка дл сжигани твердого топлива
SU1588986A2 (ru) * 1988-07-25 1990-08-30 Сибирский Филиал Всесоюзного Научно-Исследовательского Теплотехнического Института Им.Ф.Э.Дзержинского Шахтно-мельнична топка
US4993332A (en) * 1987-11-17 1991-02-19 Villamosenergiapari Kutato Intezet Hybrid fluidized bed and pulverized coal combustion system and a process utilizing said system
RU2006740C1 (ru) * 1991-06-27 1994-01-30 Московский энергетический институт Пылеугольная топка

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867909A (en) * 1973-11-19 1975-02-25 Foster Wheeler Corp Slag prevention air slots in furnace sidewalls
DE3403981A1 (de) * 1984-02-04 1985-08-14 Deutsche Babcock Werke AG, 4200 Oberhausen Verfahren und vorrichtung zum betreiben einer feuerung unter verminderter bildung von stickoxiden
RU2018050C1 (ru) * 1990-10-16 1994-08-15 Шестаков Станислав Михайлович Вихревая топка

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1089354A1 (ru) * 1982-11-18 1984-04-30 Московский Ордена Ленина И Ордена Октябрьской Революции Энергетический Институт Факельно-вихрева топка
SU1244427A1 (ru) * 1985-01-23 1986-07-15 Московский Ордена Ленина И Ордена Октябрьской Революции Энергетический Институт Факельно-вихрева топка дл сжигани твердого топлива
US4993332A (en) * 1987-11-17 1991-02-19 Villamosenergiapari Kutato Intezet Hybrid fluidized bed and pulverized coal combustion system and a process utilizing said system
SU1588986A2 (ru) * 1988-07-25 1990-08-30 Сибирский Филиал Всесоюзного Научно-Исследовательского Теплотехнического Института Им.Ф.Э.Дзержинского Шахтно-мельнична топка
RU2006740C1 (ru) * 1991-06-27 1994-01-30 Московский энергетический институт Пылеугольная топка

Also Published As

Publication number Publication date
UA83761C2 (en) 2008-08-11
EA008691B1 (ru) 2007-06-29
EA200602190A1 (ru) 2007-04-27
RU2253801C1 (ru) 2005-06-10

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