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EP2657598A2 - Brûleur pour la combustion de carburants solides comprenant des hydrocarbures - Google Patents

Brûleur pour la combustion de carburants solides comprenant des hydrocarbures Download PDF

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Publication number
EP2657598A2
EP2657598A2 EP13165136.6A EP13165136A EP2657598A2 EP 2657598 A2 EP2657598 A2 EP 2657598A2 EP 13165136 A EP13165136 A EP 13165136A EP 2657598 A2 EP2657598 A2 EP 2657598A2
Authority
EP
European Patent Office
Prior art keywords
burner
combustion chamber
inner tube
air
combustion
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.)
Withdrawn
Application number
EP13165136.6A
Other languages
German (de)
English (en)
Inventor
Erney Errol Pinas
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
Publication of EP2657598A2 publication Critical patent/EP2657598A2/fr
Withdrawn legal-status Critical Current

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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
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B10/00—Combustion apparatus characterised by the combination of two or more combustion chambers
    • F23B10/02—Combustion apparatus characterised by the combination of two or more combustion chambers including separate secondary combustion chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B40/00—Combustion apparatus with driven means for feeding fuel into the combustion chamber
    • F23B40/06—Combustion apparatus with driven means for feeding fuel into the combustion chamber the fuel being fed along the fuel-supporting surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
    • F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
    • F23B80/04—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for guiding the flow of flue gases, e.g. baffles
    • 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
    • F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
    • F23M9/02—Baffles or deflectors for air or combustion products; Flame shields in air inlets

Definitions

  • the device relates to a burner for combusting fuel comprising solid hydrocarbons, comprising at least an outer tube and an inner tube arranged in the outer tube, wherein a first space is formed between the outer tube and the inner tube and a second space is formed in the inner tube, wherein a first combustion chamber intended for pre-combustion of the fuel is formed in the first space and the second space is intended for transporting gas products produced during the pre-combustion to a second combustion chamber which is connectable to the inner tube and is intended for the purpose of post-combustion of the gas products, and wherein the burner is provided with fuel supply means connected to an opening in the outer tube, the first space is provided with fuel transport means, such as for instance a screw, for transporting through the first combustion chamber the fuel supplied by the fuel supply means, the burner is provided with one or more ignition elements for igniting the fuel present in the first combustion chamber, the outer tube is provided with first air supply means for supplying air under overpressure into the first combustion chamber, the outer tube is provided with a discharge for dischar
  • a burner according to the preamble is known in the field and is described in the Netherlands patent NL8700945 .
  • the known burner has the drawback that the first combustion chamber is located in the part in which the fuel transport means are also arranged. This has the great drawback that the fuel transport means are also heated.
  • the temperature in the first combustion chamber can rise to 600°C to 700°C, whereby high standards have to be set for the fuel transport means.
  • the first combustion chamber is situated a distance from the second combustion chamber so that the known burner is relatively large in longitudinal direction.
  • the known burner cannot hereby be applied as replacement for a pre-burner of oil or gas-fired compact installations such as for instance a CH boiler.
  • the burner according to the invention has for this purpose the feature that the first combustion chamber is situated close to the connection of the second combustion chamber and the fuel transport means are arranged outside the first combustion chamber.
  • the burner according to the invention hereby has a more compact form and the part of the burner where the fuel transport means are located is not heated during operation.
  • both the first and the second combustion chamber are situated inside the installation, such as a CH boiler or steam boiler, where the burner is installed. All heat created hereby ends up in the boiler, which results in a higher efficiency.
  • the first combustion chamber is preferably situated adjacently of the connection of the second combustion chamber.
  • both the outer tube and the inner tube consist of a first part which is connected fixedly to the burner and a second part which is connected releasably to the burner, and the first combustion chamber is formed by the second parts of the outer tube and the inner tube.
  • the first combustion chamber is subject to wear because of the great heat. A worn combustion chamber can be easily replaced in this embodiment.
  • the burner is provided with an air chamber connectable to an air supply device, such as for instance a fan, and the first air supply means are connected to the air chamber by means of a first air regulator and the second air supply means by means of a second air regulator. Only one air supply device is therefore necessary. In the known burner a minimum of two air supply devices are necessary.
  • the air chamber is arranged in the line of the outer tube, the air chamber is separated from the first space by means of a flange, a part of the inner tube is situated in the air chamber, the inner tube passes through the flange by means of a first passage in the flange and an outer end of the inner tube is bearing-mounted in the air chamber.
  • the burner according to the invention can hereby remain compact in transverse direction, while the length of the burner hardly increases.
  • the first air regulator preferably comprises at least one second passage in the flange, which second passage connects the first air supply means to the air chamber and a controllable first valve for closing the at least one second passage.
  • the burner is provided with a first air regulator which can be realized in economically advantageous manner.
  • the first valve is preferably formed here by a disc which lies against the flange and is rotatably connected to the flange, and the disc comprises passages co-acting with the second passages in the flange.
  • the second air regulator preferably comprises at least one second opening in the part of the inner tube situated in the air chamber, which second opening connects the second air supply means to the air chamber, and comprises a controllable second valve for closing the at least one second opening.
  • the burner is provided with a second air regulator which can be realized in economically advantageous manner.
  • the second valve comprises here at least one tubular ring which is arranged round the inner tube and is slidable in controllable manner in the longitudinal direction of the inner tube, and which is intended for closing the second opening.
  • the burner is preferably configured for mounting by means of a mounting flange on a boiler such that the first and second combustion chambers are situated in the boiler.
  • the part of the outer tube 17 which is mounted in the boiler preferably takes a conical form here.
  • Figure 1 shows a cross-section in longitudinal direction of a preferred embodiment of the burner B according to the invention.
  • the burner B is configured to combust fuel F comprising solid hydrocarbons, such as for instance wood, sawdust, wood pellets, rice husks, grass, pods, peelings, nuts and palm oil kernels.
  • the fuel F preferably consists of biomass.
  • the burner B comprises an outer burner casing formed by an outer tube 17 and a part 19 of inner tube 20 arranged in outer tube 17, which part 19 is provided with perforations or openings.
  • a first space R1 is formed between outer tube 17 and inner tube 20 and a second space R2 is formed in inner tube 20.
  • Both outer tube 17 and inner tube 20 consist of a first part, in the direction of D1, which is connected fixedly to the burner, and a second part, in the direction of D2, which is connected releasably to the burner B by means of a mounting flange 16.
  • Mounting flange 16 also provides a fixing option for the purpose of fixing the burner B to a boiler.
  • the releasable second part of inner tube 20 is preferably disposed in stationary manner.
  • Outer tube 17 is provided with a discharge in end plate 18 for the purpose of discharging the combustion residues produced during the combustion of the fuel F.
  • first combustion chamber V1 intended for pre-combustion of the fuel F.
  • the first combustion chamber V1 is adjacent to the connection of the second combustion chamber V2.
  • Outer tube 17 is provided with first air supply means L1 formed by the perforated primary air pipe 19 and the primary air chamber 13 for the purpose of supplying air under overpressure into the first combustion chamber V1.
  • the second space R2 is intended for transporting gas products G produced during the pre-combustion to a second combustion chamber V2 which is connectable to inner tube 20 and intended for the purpose of post-combustion of the gas products G.
  • the burner B is provided with fuel supply means 21 which are connected to an opening 25 in the part of outer tube 17 comprising first space R1.
  • the first space R1 is provided with fuel transport means 12, for instance a screw or screw conveyor, for transporting through the first combustion chamber V1 the fuel F supplied by the fuel supply means 21.
  • the fuel transport means 12 are arranged outside the first combustion chamber V1.
  • the burner B is preferably provided with one or more ignition elements 15 for igniting the fuel F present in the first combustion chamber V1.
  • Inner tube 20 is provided substantially close to the first combustion chamber V1 with first openings 26 and provided with second air supply means L2 for supplying air under overpressure into the second space R2 such that during operation the gas products G are carried out of the first combustion chamber V1 through openings 26 to the second space R2 and subsequently guided to the second combustion chamber V2.
  • the burner B is provided with an air chamber 24 which is connectable to an air supply device 5, such as for instance a fan.
  • Air chamber 24 lies in the line of outer tube 17 and is separated by means of a flange 8 from the first space R1.
  • a part 27 of inner tube 20 is situated in air chamber 24, wherein inner tube 20 passes through flange 8 by means of a first passage 28 in flange 8.
  • An outer end of inner tube 20 is bearing-mounted in air chamber 24 by means of bearing 4 accommodated in bearing housing 3.
  • the first air supply means L1 are connected to air chamber 24 by means of a first air regulator, formed by a controllable valve comprising air disc 7 provided with passages 30 and second passages 29 in flange 8.
  • the second air supply means L2 are connected to air chamber 24 by means of a second air regulator formed by an air slide valve 10 consisting of a tubular ring and at least one air gap 11. Air slide valve 10 can be operated by means of pinion 1 which displaces air slide valve 10 via gear rack 2.
  • An optimal material feed to the material chamber R1 is realized by means of a material detection sensor 14.
  • Optimal combustion is realized by controlling primary air disc 7 and secondary air slide valve 10. Capacity control takes place by means of controlling material screw 12.
  • the first air regulator and the second air regulator can be controlled such that optimum combustion of the fuel F takes place.
  • Material screw 12 is driven by means of drive shaft screw 22, whereby fuel F is displaced from the material section space R1 to the combustion section space R2. Pipes 17, 19 and 20 are fixed and form the burner head.
  • Figure 2 shows a view of end plate 18 of the burner according to Figure 1 .
  • the end plate is provided with three annular openings 31, 32 and 33.
  • Annular openings 31 and 32 form the ash outlet for the ash which is created in the first combustion chamber V1.
  • Annular opening 33 is intended for connection to the second combustion chamber V2.
  • combustion chamber V2 It is possible for combustion chamber V2 to extend at least partially in the second space R2.

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)
  • Gas Burners (AREA)
EP13165136.6A 2012-04-26 2013-04-24 Brûleur pour la combustion de carburants solides comprenant des hydrocarbures Withdrawn EP2657598A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2008706A NL2008706C2 (nl) 2012-04-26 2012-04-26 Brander voor het verbranden van vast koolwaterstoffen bevattende brandstof.

Publications (1)

Publication Number Publication Date
EP2657598A2 true EP2657598A2 (fr) 2013-10-30

Family

ID=48446043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13165136.6A Withdrawn EP2657598A2 (fr) 2012-04-26 2013-04-24 Brûleur pour la combustion de carburants solides comprenant des hydrocarbures

Country Status (2)

Country Link
EP (1) EP2657598A2 (fr)
NL (1) NL2008706C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018219871A1 (fr) * 2017-05-29 2018-12-06 SWISS KRONO Tec AG Incinérateur servant à l'incinération d'un produit à incinérer sous la forme d'un produit de concassage du bois, en particulier d'un produit fin

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8700945A (nl) 1987-04-21 1988-11-16 F L Halfhide Engineering Brander.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8700945A (nl) 1987-04-21 1988-11-16 F L Halfhide Engineering Brander.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018219871A1 (fr) * 2017-05-29 2018-12-06 SWISS KRONO Tec AG Incinérateur servant à l'incinération d'un produit à incinérer sous la forme d'un produit de concassage du bois, en particulier d'un produit fin
CN110678695A (zh) * 2017-05-29 2020-01-10 瑞士卢森技术股份公司 用于燃烧木屑产品形式的燃烧材料(尤其细碎材料)的燃烧器
CN110678695B (zh) * 2017-05-29 2021-04-09 瑞士卢森技术股份公司 用于燃烧木屑产品形式的燃烧材料(尤其细碎材料)的燃烧器
RU2756724C2 (ru) * 2017-05-29 2021-10-04 СВИСС КРОНО Тек АГ Горелка для сжигания топлива в виде продукта измельчения древесины, в частности, мелкого продукта
US11149944B2 (en) 2017-05-29 2021-10-19 SWISS KRONO Tec AG Burner for the combustion of material for combustion in the form of a comminuted wood product, in particular of fine material

Also Published As

Publication number Publication date
NL2008706C2 (nl) 2013-10-29

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