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WO1988004009A1 - Ensemble pour bruler des combustibles solides - Google Patents

Ensemble pour bruler des combustibles solides Download PDF

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Publication number
WO1988004009A1
WO1988004009A1 PCT/SE1987/000538 SE8700538W WO8804009A1 WO 1988004009 A1 WO1988004009 A1 WO 1988004009A1 SE 8700538 W SE8700538 W SE 8700538W WO 8804009 A1 WO8804009 A1 WO 8804009A1
Authority
WO
WIPO (PCT)
Prior art keywords
fire
burning
assembly
fuel
combustion chamber
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/SE1987/000538
Other languages
English (en)
Inventor
Bengt Bengtsson
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.)
Bengtsson Biovarme AB
Original Assignee
Bengtsson Biovarme AB
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 Bengtsson Biovarme AB filed Critical Bengtsson Biovarme AB
Publication of WO1988004009A1 publication Critical patent/WO1988004009A1/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
    • 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
    • F23L1/00—Passages or apertures for delivering primary air for combustion 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M3/00—Firebridges
    • F23M3/02—Firebridges modified for circulation of fluids, e.g. air, steam, water
    • F23M3/04—Firebridges modified for circulation of fluids, e.g. air, steam, water for delivery of gas, e.g. air, steam
    • F23M3/06—Firebridges modified for circulation of fluids, e.g. air, steam, water for delivery of gas, e.g. air, steam into or towards fire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B1/00—Combustion apparatus using only lump fuel

Definitions

  • the present invention relates to an assembly for burning solid fuels, comprising a combustion chamber through which a strand of fuel is supplied to a burning or glowing fire contiguous to the fuel strand, the burning fire being supplied with combustion air in a direction countercurrent to the fuel supply.
  • An assembly this type is previously known from SE patent- application 8304228-3.
  • the present invention aims at obviating the above- mentioned shortcomings of prior art solid fuel burning assemblies of the type mentioned in the introduction, and at providing an assembly of superior combustion efficiency.
  • This and other objects are achieved, in accordance with the main characteristic features of the invention, in that at least one movable and/or flexible, preferably flap-shaped shielding member is arranged to engage the upper and/or front side of the burning fire in order to delimit, independently of the varying height of the fire, the space between the fire and the ceiling of the combustion chamber, thereby to constantly force the combustion air to pass through and not above the burning fire.
  • the shielding member is a flap or door which is pivot- ably movable, more particularly about a substantially horizontal shaft mounted in the area of the ceiling, of the combustion chamber.
  • FIGS. 1-3 are simplified longi ⁇ tudinal sections of three different alternative embodi ⁇ ments of the assembly according to the invention. Detailed description of preferred emobdi ents of the invention
  • the assembly shown in Fig. 1 comprises a combustion chamber 1 defined by a ceiling 2, a bottom 3 and two preferably vertical side walls, one 4 of which is shown in the drawing.
  • the ceiling, the bottom and the side walls may be provided, in actual practice, with linings 5 of refractory material.
  • a duct 6 for evacuating exhaust gases from the combustion chamber 1 passes through the upper part or ceiling 2.
  • the combustion chamber is defined by an end wall 7 which, in the embodiment illustrated, com ⁇ prises at least one pipe 8 for supplying primary air to the combustion chamber and the fire burning therein.
  • a feeder device 9 illustrated schematically in the form of a ram for feeding fuel 10 into the combustion chamber.
  • the feeder device is preferably designed in the manner disclosed by SE patent application 8304229-1. In actual opera ⁇ tion, the feeder device operates in such a manner that it introduces, very slowly and intermittently, a strand or bed of fuel which may consist of, for example, pellets, chips, pieces of wood, briquettes or the like. At the front end of the fuel strand 10 is the burning or glowing fire 11 in which the co - bustion proper occurs. Finally, it should be mentioned that there is provided, at the front end of the assembly and on a level below the bottom 3, a pocket 12 adapted to receive ash, slag or other combustion residues 13 from the fire 11.
  • the illustrated assembly as described above is previously known in every essential respect from SE 8304228-3.
  • the novel matter of the invention resides in the flap or door 14 serving as a shielding member.
  • the flap 14 is pivot- ably movable, more particularly about an essentially horizontal shaft 15 mounted in the area of the com ⁇ bustion chamber ceiling.
  • the flap 14 is mounted in the area between the ash pocket 12 and the duct 6 through which the exhaust gases from the fire 11 are evacuated. If a single flap or panel is used, it must have an axial extent substantially equal to the width of the combustion chamber 1 so that the flap will cover the entire with of the chamber, and the length, i.e. the distance from the shaft 15 to the free end 16 of the flap, should be approximately equal to the headroom of the combustion chamber in the zone within which the fire is located.
  • the flap 14 because of its pivotal mounting, will constantly be in contact with the upper and/or front side of the fire 11 and, independently of any variations in the vertical extent of the fire and the fuel strand 10 (due to, for example, variations in the fuel structure and fuel properties and any ensuing variations in the fuel feed) , will delimit the space between the fire and the ceiling of the combustion chamber. In this manner, the primary air introduced via the pipe 8 is forced to pass through the fire, not over it. In other words, the flap 14 guarantees an intense and homogeneous admixture of the combustion air to the fuel, while providing an extremely high combustion efficiency. Practical tests have shown that the assembly according to the invention has an efficiency which is 100-200 % higher than that of similar prior art assemblies.
  • Fig. 2 illustrates an assembly of the burner type, which is especially suitable for burning pellets, for example peat pellets.
  • the fuel strand 10 is fed to the combustion zone within the area of the flap 14' by means of a per se known feeder screw 17 instead of by the ram feeder 9 according to Fig. 1.
  • a second conveyor screw 18 by which the solid combustion resi- dues sliding down into the pocket 12' can be mechanical ⁇ ly removed from the assembly.
  • the assembly operates essentially in the same manner as the embodiment shown in Fig. 1, i.e. the pivotably mounted flap 14' ensures that primary air introduced via the pipe 8 ' in a direction countercurrent to the direction of the fuel feed is forced to pass through the fire, not over it.
  • Fig. 3 fi'nally, illustrates an embodiment in which a boiler 19 is mounted on top of the assembly according to the invention or the furnace.
  • the bottom 3" is sloping in a direction obliquely downwardly from the point of fuel introduction to the ash pocket 12".
  • the fuel is supplied by means of a screw feeder 17', and a scraper 20 of per se known type is arranged to supply, or contribute to supplying, the fuel to the fire after the fuel has entered the combustion chamber via the screw feeder 17'.
  • a flap 14" which, in the embodiment illustrated, is hollow in that it .comprises double walls and has a multiplicity of holes 21 for blowing air towards the burning fire 11".
  • the air thus supplied sustains, together with the primary air from the pipe 8", the combustion of the fuel in the fire, and above all the air cools the flap in contact with the burning fire, whereby the life of the flap can be increased considerably.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Solid-Fuel Combustion (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)

Abstract

Un ensemble pour brûler des combustibles solides comprend une chambre de combustion (1) à travers laquelle un cordon de combustible (10) est fourni à un foyer de combustion (11) qui est alimenté en air de combustion dans un sens à contre-courant du sens d'alimentation en combustible. Un rabat mobile ou un écran de protection (14) est agencé en vue de venir en contact avec la face supérieure et/ou frontale du foyer (11) afin de délimiter, indépendamment de la hauteur variable du foyer, l'espace entre ledit foyer et le plafond (2) de la chambre de combustion (1), pour ainsi obliger constamment l'air de combustion à passer à travers et non au-dessus du foyer.
PCT/SE1987/000538 1986-11-26 1987-11-17 Ensemble pour bruler des combustibles solides Ceased WO1988004009A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8605060A SE455640B (sv) 1986-11-26 1986-11-26 Aggregat for forbrenning av fasta brenslen
SE8605060-6 1986-11-26

Publications (1)

Publication Number Publication Date
WO1988004009A1 true WO1988004009A1 (fr) 1988-06-02

Family

ID=20366410

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1987/000538 Ceased WO1988004009A1 (fr) 1986-11-26 1987-11-17 Ensemble pour bruler des combustibles solides

Country Status (3)

Country Link
AU (1) AU8338587A (fr)
SE (1) SE455640B (fr)
WO (1) WO1988004009A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2175421C1 (ru) * 2000-11-09 2001-10-27 Аристархов Дмитрий Викторович Топочное устройство
WO2007139475A1 (fr) * 2006-05-30 2007-12-06 Aktiebolaget Swebo Flis O Energi Brûleur de pastilles
RU2393382C1 (ru) * 2009-04-06 2010-06-27 Научно-Исследовательский Проектный Кооператив "Элегаз" Беспламенный способ сжигания твердого топлива
RU2393381C1 (ru) * 2009-04-06 2010-06-27 Научно-Исследовательский Проектный Кооператив "Элегаз" Беспламенный способ сжигания твердого топлива
RU2393383C1 (ru) * 2009-04-06 2010-06-27 Научно-Исследовательский Проектный Кооператив "Элегаз" Отопительное устройство с горизонтальной кладкой твердого топлива плотным слоем
RU2393384C1 (ru) * 2009-04-06 2010-06-27 Научно-Исследовательский Проектный Кооператив "Элегаз" Отопительно-варочное устройство с вертикальной кладкой твердого топлива плотным слоем
WO2010110634A3 (fr) * 2009-03-27 2010-11-18 Muiznieks Aigars Dispositif et procédé pour brûler du combustible solide

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE685682C (de) * 1937-07-29 1939-12-22 Leon Rainchon Fuellschachtfeuerung fuer kleinstueckige Brennstoffe mit rostloser Brennkammer
US2424755A (en) * 1944-09-08 1947-07-29 Anthracite Equipment Corp Method and apparatus for burning solid fuels
EP0038962A1 (fr) * 1980-04-29 1981-11-04 Siegfried Bieder Dispositif pour la combustion de matières solides légères par un foyer à chargement continu
FI65852B (fi) * 1979-09-07 1984-03-30 Jorma Mustakoski Foerbraenningsanordning foer fast braensle
SE438198B (sv) * 1978-04-18 1985-04-01 Olle Cederqvist Transport- och forbrenningsanordning, serskilt for till spanform finfordelat tre

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE685682C (de) * 1937-07-29 1939-12-22 Leon Rainchon Fuellschachtfeuerung fuer kleinstueckige Brennstoffe mit rostloser Brennkammer
US2424755A (en) * 1944-09-08 1947-07-29 Anthracite Equipment Corp Method and apparatus for burning solid fuels
SE438198B (sv) * 1978-04-18 1985-04-01 Olle Cederqvist Transport- och forbrenningsanordning, serskilt for till spanform finfordelat tre
FI65852B (fi) * 1979-09-07 1984-03-30 Jorma Mustakoski Foerbraenningsanordning foer fast braensle
EP0038962A1 (fr) * 1980-04-29 1981-11-04 Siegfried Bieder Dispositif pour la combustion de matières solides légères par un foyer à chargement continu

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2175421C1 (ru) * 2000-11-09 2001-10-27 Аристархов Дмитрий Викторович Топочное устройство
WO2002039017A1 (fr) * 2000-11-09 2002-05-16 Dmitry Viktorovich Aristarkhov Dispositif a four
WO2007139475A1 (fr) * 2006-05-30 2007-12-06 Aktiebolaget Swebo Flis O Energi Brûleur de pastilles
WO2010110634A3 (fr) * 2009-03-27 2010-11-18 Muiznieks Aigars Dispositif et procédé pour brûler du combustible solide
RU2393382C1 (ru) * 2009-04-06 2010-06-27 Научно-Исследовательский Проектный Кооператив "Элегаз" Беспламенный способ сжигания твердого топлива
RU2393381C1 (ru) * 2009-04-06 2010-06-27 Научно-Исследовательский Проектный Кооператив "Элегаз" Беспламенный способ сжигания твердого топлива
RU2393383C1 (ru) * 2009-04-06 2010-06-27 Научно-Исследовательский Проектный Кооператив "Элегаз" Отопительное устройство с горизонтальной кладкой твердого топлива плотным слоем
RU2393384C1 (ru) * 2009-04-06 2010-06-27 Научно-Исследовательский Проектный Кооператив "Элегаз" Отопительно-варочное устройство с вертикальной кладкой твердого топлива плотным слоем

Also Published As

Publication number Publication date
SE8605060L (sv) 1988-05-27
SE455640B (sv) 1988-07-25
SE8605060D0 (sv) 1986-11-26
AU8338587A (en) 1988-06-16

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