WO2006009485A1 - Chambre de combustion cyclone - Google Patents

Chambre de combustion cyclone Download PDF

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Publication number
WO2006009485A1
WO2006009485A1 PCT/RU2005/000083 RU2005000083W WO2006009485A1 WO 2006009485 A1 WO2006009485 A1 WO 2006009485A1 RU 2005000083 W RU2005000083 W RU 2005000083W WO 2006009485 A1 WO2006009485 A1 WO 2006009485A1
Authority
WO
WIPO (PCT)
Prior art keywords
additional
nozzle
wall
chamber
additional chamber
Prior art date
Application number
PCT/RU2005/000083
Other languages
English (en)
Russian (ru)
Inventor
Konstantin Anatolievich Grigoriev
Vitaly Efimovich Skuditsky
Yury Alexandrovich Rundygin
Alexandr Lvovich Popov
Andrei Pavlovich Tokunov
Vladimir Vladimirovich Litvinenko
Original Assignee
Grigoriev Konstantin Anatoliev
Vitaly Efimovich Skuditsky
Yury Alexandrovich Rundygin
Alexandr Lvovich Popov
Andrei Pavlovich Tokunov
Litvinenko Vladimir Vladimirov
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=35785501&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2006009485(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Grigoriev Konstantin Anatoliev, Vitaly Efimovich Skuditsky, Yury Alexandrovich Rundygin, Alexandr Lvovich Popov, Andrei Pavlovich Tokunov, Litvinenko Vladimir Vladimirov filed Critical Grigoriev Konstantin Anatoliev
Priority to EA200602189A priority Critical patent/EA008690B1/ru
Priority to UAA200700762A priority patent/UA83760C2/uk
Publication of WO2006009485A1 publication Critical patent/WO2006009485A1/fr

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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 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • 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.
  • the disadvantage of this device is the high degree of erosive wear of the furnace wall due to exposure to a stream of air coming out of the nozzle and containing the smallest, most erosive particles of fuel and ash.
  • a failure of unburnt large fuel particles from the furnace due to the passage of these particles across the air flow from the nozzle is possible, which leads to a decrease in the completeness of fuel burn in the vortex furnace, and thereby reduces its efficiency.
  • a vortex furnace containing a combustion chamber, including walls passing at the bottom into a funnel, at least one burner mounted in the wall, and an additional chamber located under the funnel, while the upper part of the additional chamber is connected to the lower part along the perimeter funnels, an air supply nozzle is mounted in the wall of the additional chamber in the area of its lower part on the burner side, the wall of the additional chamber located opposite the air supply nozzle is made concave on this nozzle and is arranged so that an imaginary plane, which is its extension intersects an opposing wall of the funnel in its middle part, and the longitudinal axis of the nozzle for supplying air directed at an angle against the concave wall of the additional chamber, RU 5 Cl, 2,154,234.
  • This technical solution adopted as a prototype of the present invention, improves the completeness of fuel combustion and thereby increases the efficiency of the vortex furnace, and also ensures the passage of slag from the combustion chamber through an additional chamber to the slag chest, which increases the reliability of the vortex furnace.
  • the air flow coming from the additional device into the combustion chamber is directed to the inner surface of the funnel and contains a significant amount of small, most erosion-hazardous particles of ash and fuel that interact with the wall of the combustion chamber, which causes its wear.
  • an excessively high temperature increase can occur in certain areas of the combustion chamber, which leads to an excessive level of formation of nitrogen oxides , a decrease in the degree of binding of sulfur oxides in these zones, as well as the occurrence of active deposits on the walls of the combustion chamber of compounds such as fusible eutectics obtained in as a result of pyroplastic transformations in ash particles.
  • the present invention is based on the solution of the problem of reducing erosion on the wall of the combustion chamber, as well as equalizing 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, and also an additional chamber located under the funnel, while the upper part of the additional chamber along the perimeter is connected to the lower part of the funnel, a nozzle for supplying air is mounted in the wall of the additional chamber in the area of its lower part from the burner side, the wall of the additional chamber located opposite the nozzle air supply, made concave relative to this nozzle and located so that an imaginary plane, which is its continuation, intersects the opposite wall of the funnel, and the longitudinal axis of the nozzle for air supply is directed at an angle to the concave wall of the additional chamber, an additional nozzle for air supply mounted in the zone of connection of the funnel and the additional chamber, while the longitudinal axis of the additional nozzle is located at an angle I 0 ... 45 ° to the imaginary plane, which is a continuation of the wall duck; at least one nozzle may be made sectional; nozzles
  • the object acquires a very important new property, which consists in the fact that the air flows coming out of the nozzles (a nozzle mounted in the wall of the additional chamber and an additional nozzle mounted in the junction of the funnel and the additional chamber) practically do not interact with each other in the lower part of the combustion chamber, which prevents the ingress of erosive particles on its wall.
  • Fig. L is a schematic diagram of a swirl furnace (longitudinal section); figure 2 is a section along A-A on an enlarged scale.
  • the vortex furnace contains a combustion chamber 1, which includes walls 2 that pass into the funnel 3 at the bottom.
  • a burner 4 is mounted in one of the walls 2 and, in a specific example, is inclined towards the funnel 3.
  • An additional chamber 5 is placed under the funnel 3, while the upper part of the additional chamber 5 along the perimeter is connected to the lower part of the funnel 3.
  • the additional chamber 5 contains a wall 6 located on the side of the burner 4, and a wall 7 located opposite the wall 6.
  • the wall 7 of the additional chamber 5 located opposite the nozzle 8 for air supply, is made concave relative to this nozzle 8 and is located so that an imaginary plane 9, which is its continuation, intersects the opposite funnel wall 3, in a specific example, in its middle part.
  • the longitudinal axis of the nozzle 8 for supplying air is directed at an angle to the concave wall 7 of the additional chamber 5.
  • the combustion chamber 1 is provided with an additional nozzle 10 for supplying air mounted in the connection zone of the funnel 3 with the additional chamber 5, while the longitudinal axis of the additional nozzle 10 is angled 1 ° ⁇ ⁇ 45 ° to the imaginary plane 9, which is a continuation of the concave wall 7 of the additional chamber 5.
  • the claimed technical result is not achieved, and the device will have the disadvantages noted in the prototype a.
  • ⁇ > 45 ° no vortex formation occurs in the central zone of the lower part of the combustion chamber 1.
  • the additional nozzle 10 will operate in the so-called "fading" mode.
  • the nozzles 8 and 10 are equipped with flow regulators in the form of gates 11.
  • Nozzles 8 and 10 may be sectional (e.g., cylindrical or slotted).
  • an additional supply of 10 products of combustion (for example, gases leaving the furnace) is possible to increase the efficiency of regulation of combustion processes, reduce the likelihood of formation of fusible eutectics from ash particles, reduce the generation of nitrogen oxides and increase the binding of sulfur oxides in bottom of the combustion chamber 1.
  • a vortex furnace works as follows: A fuel-air mixture consisting of crushed fuel and air is supplied through a burner 4 to the internal space of the combustion chamber 1, while the amount of movement (flow rate, speed) of the air is selected so as to ensure separation and distribution of different fuel particles 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 12, in which the smallest particles of fuel are burned.
  • gaseous products of combustion and ash are formed.
  • Part of unburned fuel particles and part of ash particles under the influence of gravity and inertia are separated into the lower part of the combustion chamber 1, namely, into its vortex combustion zone 13.
  • Air is supplied to the lower part of the combustion chamber 1 in two streams: through an additional chamber 5, by means of a nozzle 8, and an additional nozzle 10.
  • the supply of lower blast air by two nozzles 8, 10 at different angles of entry into the lower part of the combustion chamber 1 determines the formation of two independent flows.
  • the flow from the additional chamber 5 is directed along an imaginary plane 9, which is a continuation of the concave wall 7 of the additional chamber 5, into the middle part of the inner surface of the funnel 3 from the side of the burner 4.
  • Air flow exiting from the additional nozzle 10 creates a circulation of small particles of fuel and ash in the inner region of the vortex combustion zone 13.
  • the particles of fuel and ash located in the lower part of the combustion chamber 1 fall into the air flows leaving the additional nozzle 10 and additional chamber 5, and are divided by size (particle size, fractions) due to the effect of these flows in series, the largest ( massive) fuel particles cross these air flows and enter the additional chamber 5, and small particles of fuel and ash enter the air stream from the additional nozzle 10.
  • the flow rate of the additional nozzle 10 should ensure winding off small particles of fuel and ash from large particles of fuel and transporting them to the central region of the vortex zone 13 of combustion.
  • the flow of air from the nozzle 8 should ensure the retention of large particles of fuel in the additional chamber 5.
  • the configuration of the additional chamber 5 and the air flow from the nozzle 8 provide multiple circulation and burnout of large particles of fuel in the volume of the additional chamber 5 and, as it burns out, the removal of these particles to the lower part of the combustion chamber 1. This provides a more complete burnout of fuel in the device. This circumstance reduces losses with a mechanical underburning q $, as a result of which the efficiency of the combustion chamber 1 is increased, that is, its efficiency.
  • the flow from the additional chamber 5 directly washing the wall of the funnel 3, on which the burner 4 is installed contains the minimum amount of the smallest most erosive particles of ash and fuel. This reduces the erosive wear of the funnel walls 3 and walls 2 of the combustion chamber 1 washed by the flow from the additional chamber 5, which increases the reliability of the vortex combustion chamber 1.
  • the winding-off of part of the fuel to the central region of the vortex zone 13 of the torch burning helps to equalize the concentration of fuel and air in the volume of the lower - vortex - part of the combustion chamber 1, which leads to equalization of heat generation in it and, as a result, equalization of the temperature field due to the exclusion of local temperature maximums.
  • This circumstance reduces the intensity of pyroplastic transformations in the ash particles with the formation of fusible eutectics and, together with the aforementioned decrease in the effect of ash particles on the wall of the combustion chamber, reduces deposits on the walls of the combustion chamber 1, which increases the reliability of its operation.
  • a generally lower temperature level reduces the formation of nitrogen oxides.
  • the same circumstance, combined with repeated circulation of ash particles in the vortex zone 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 whole gamut of solid fossil fuels in a wide range of changes in its quality characteristics and particle size distribution, it allows to increase the efficiency, reliability and safety of the furnace by reducing the likelihood of erosion of its walls and deposits on its walls (their slagging), as well as reduce the formation of oxides nitrogen by reducing and equalizing the overall temperature level in the furnace, and increase the binding of sulfur oxides to the main oxides of the mineral part of the fuel by increasing the rates these 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)
  • Combustion Of Fluid Fuel (AREA)
  • Solid-Fuel Combustion (AREA)

Abstract

La présente invention peut être utilisée pour la combustion de combustible organique solide. La chambre de combustion cyclone de cette invention comprend une chambre de combustion (1) comportant des parois (2) dont la partie inférieure se présente sous la forme d'une trémie (3), au moins un brûleur (4), ainsi qu'une chambre supplémentaire (5) disposée sous la trémie (3), la partie supérieure de la chambre supplémentaire (5) étant reliée sur son périmètre à la partie inférieure de la trémie (3), ainsi qu'une buse d'alimentation en air (8) montée dans la paroi (6) de la chambre supplémentaire (5) dans la partie inférieure de celle-ci du côté du brûleur. La paroi (7) de la chambre supplémentaire (5), disposée en face de la buse d'alimentation en air (8), se présente sous une forme concave par rapport à ladite buse (8), l'axe longitudinal de la buse d'alimentation en air (8) formant un angle par rapport à la paroi concave (7) de la chambre supplémentaire (5) comportant une buse d'alimentation en air supplémentaire (10) montée dans la zone où la trémie (3) et la chambre supplémentaire (5) se rejoignent, l'axe longitudinal de la buse supplémentaire (10) formant un angle compris entre 1 et 45° avec un plan imaginaire (9) constituant le prolongement de la paroi concave (7).
PCT/RU2005/000083 2004-07-02 2005-02-21 Chambre de combustion cyclone WO2006009485A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EA200602189A EA008690B1 (ru) 2004-07-02 2005-02-21 Вихревая топка
UAA200700762A UA83760C2 (en) 2004-07-02 2005-02-21 Swirling-type furnace

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2004121073/06A RU2253800C1 (ru) 2004-07-02 2004-07-02 Вихревая топка
RU2004121073 2004-07-02

Publications (1)

Publication Number Publication Date
WO2006009485A1 true WO2006009485A1 (fr) 2006-01-26

Family

ID=35785501

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2005/000083 WO2006009485A1 (fr) 2004-07-02 2005-02-21 Chambre de combustion cyclone

Country Status (4)

Country Link
EA (1) EA008690B1 (fr)
RU (1) RU2253800C1 (fr)
UA (1) UA83760C2 (fr)
WO (1) WO2006009485A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007030195A1 (de) 2007-06-27 2009-01-02 Technische Universität Carolo-Wilhelmina Zu Braunschweig Vorrichtung zur Zustandsüberwachung von Bauteilen und Bauwerken

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106765061B (zh) * 2017-01-05 2023-07-11 东方电气集团东方锅炉股份有限公司 燃烧器区域变截面适应灵活性调峰的煤粉锅炉炉膛
RU198069U1 (ru) * 2020-01-14 2020-06-17 Михаил Евгеньевич Пузырев Твердотопливная низкотемпературная вихревая топка

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU483559A1 (ru) * 1973-05-17 1975-09-05 Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина Способ работы топки
RU2052715C1 (ru) * 1992-12-07 1996-01-20 Владимир Анатольевич Чамин Способ сжигания грубоизмельченного твердого топлива в вихревой топке и вихревая топка
RU2079779C1 (ru) * 1993-12-28 1997-05-20 Малое государственное внедренческое предприятие "Политехэнерго" Вихревая топка
RU2154234C1 (ru) * 1999-04-23 2000-08-10 Малое государственное внедренческое предприятие МГВП "Политехэнерго" Топка
US6234093B1 (en) * 1996-08-15 2001-05-22 Polytechenergo Furnace

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU483559A1 (ru) * 1973-05-17 1975-09-05 Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина Способ работы топки
RU2052715C1 (ru) * 1992-12-07 1996-01-20 Владимир Анатольевич Чамин Способ сжигания грубоизмельченного твердого топлива в вихревой топке и вихревая топка
RU2079779C1 (ru) * 1993-12-28 1997-05-20 Малое государственное внедренческое предприятие "Политехэнерго" Вихревая топка
US6234093B1 (en) * 1996-08-15 2001-05-22 Polytechenergo Furnace
RU2154234C1 (ru) * 1999-04-23 2000-08-10 Малое государственное внедренческое предприятие МГВП "Политехэнерго" Топка

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007030195A1 (de) 2007-06-27 2009-01-02 Technische Universität Carolo-Wilhelmina Zu Braunschweig Vorrichtung zur Zustandsüberwachung von Bauteilen und Bauwerken

Also Published As

Publication number Publication date
EA008690B1 (ru) 2007-06-29
RU2253800C1 (ru) 2005-06-10
UA83760C2 (en) 2008-08-11
EA200602189A1 (ru) 2007-04-27

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