WO2013046708A1 - Brûleur à flamme tubulaire - Google Patents

Brûleur à flamme tubulaire Download PDF

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Publication number
WO2013046708A1
WO2013046708A1 PCT/JP2012/006226 JP2012006226W WO2013046708A1 WO 2013046708 A1 WO2013046708 A1 WO 2013046708A1 JP 2012006226 W JP2012006226 W JP 2012006226W WO 2013046708 A1 WO2013046708 A1 WO 2013046708A1
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WO
WIPO (PCT)
Prior art keywords
gas
nozzle
combustion chamber
tubular flame
flame burner
Prior art date
Application number
PCT/JP2012/006226
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English (en)
Japanese (ja)
Inventor
泰平 野内
石井　純
浅沼　稔
岡田　邦明
Original Assignee
Ｊｆｅスチール株式会社
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 Ｊｆｅスチール株式会社 filed Critical Ｊｆｅスチール株式会社
Priority to KR1020147008949A priority Critical patent/KR101595678B1/ko
Priority to JP2013535934A priority patent/JP5704248B2/ja
Priority to CN201280047615.9A priority patent/CN103857961B/zh
Priority to EP12836569.9A priority patent/EP2762779B1/fr
Publication of WO2013046708A1 publication Critical patent/WO2013046708A1/fr

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    • 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
    • F23C3/002—Combustion apparatus characterised by the shape of the combustion chamber the chamber having an elongated tubular form, e.g. for a radiant tube
    • 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
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F23D14/24—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other at least one of the fluids being submitted to a swirling motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/82—Preventing flashback or blowback
    • 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 
    • F23L9/04—Passages or apertures for delivering secondary air for completing combustion of fuel  by discharging the air beyond the fire, i.e. nearer the smoke outlet
    • 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
    • F23C2900/03004—Tubular combustion chambers with swirling fuel/air flow

Definitions

  • the present invention relates to a tubular flame burner.
  • the tubular flame burner 10 has a tubular combustion chamber 11 having one end opened, and a nozzle 12 for blowing fuel gas to a closed end side of the combustion chamber 11 and a nozzle 13 for blowing oxygen-containing gas.
  • a burner that forms a tubular flame 14 in the combustion chamber 11 in a direction tangential to the inner wall surface.
  • the burner is downsized, and harmful substances such as NOx that increase depending on combustion conditions, carbonization It is an epoch-making burner that can reduce unburned components such as hydrogen and environmental pollution sources such as soot (see, for example, Patent Documents 1 and 2).
  • Patent Document 1 discloses a method for adjusting the temperature of combustion exhaust gas. Absent.
  • Patent Document 2 a nozzle for injecting a temperature adjustment gas for combustion exhaust gas is provided on the open end side of the combustion chamber, and the temperature of the combustion exhaust gas is adjusted by the temperature adjustment gas blown from the nozzle. It is described. However, as described in detail in the section “DETAILED DESCRIPTION OF THE INVENTION” described later, the technique described in Patent Document 2 sometimes misfires (stops combustion).
  • the present invention has been made in view of the circumstances as described above, and the temperature of the combustion exhaust gas can be adjusted appropriately and stably in response to the use of a tubular flame burner as a hot air generator or the like.
  • An object of the present invention is to provide a tubular flame burner capable of continuing combustion.
  • the present invention has the following features.
  • It has a tubular combustion chamber with one end open, and a nozzle for blowing fuel gas and a nozzle for blowing oxygen-containing gas are provided on the closed end side of the combustion chamber toward the tangential direction of the inner wall surface.
  • a tubular flame burner, A nozzle for injecting a temperature adjustment gas for combustion exhaust gas is provided on the open end side of the combustion chamber, and the temperature adjustment gas blown from the nozzle for injecting the temperature adjustment gas flows backward to the fuel gas injection nozzle side.
  • a tubular flame burner provided with a backflow prevention means for preventing this.
  • the backflow prevention means inclines the blowing direction of the temperature adjusting gas from the nozzle for blowing the temperature adjusting gas 10 ° to 60 ° downstream from the plane orthogonal to the tube axis of the tubular combustion chamber.
  • the tubular flame burner according to the above [1].
  • a tubular combustion chamber having one end opened is provided, and a nozzle for blowing fuel gas and a nozzle for blowing oxygen-containing gas are provided on the closed end side of the combustion chamber toward the tangential direction of the inner wall surface.
  • a tubular flame burner, A nozzle for blowing the temperature adjustment gas of the combustion exhaust gas is provided on the open end side of the combustion chamber, and the blowing direction of the temperature adjustment gas from the nozzle for blowing the temperature adjustment gas is orthogonal to the tube axis of the tubular combustion chamber
  • the temperature of the combustion exhaust gas can be adjusted appropriately, and a tubular flame burner capable of continuing stable combustion is obtained. Yes.
  • FIG. 1 is a view showing a conventional tubular flame burner described in Patent Document 1.
  • FIG. FIG. 2 shows a tubular flame burner 10A having a temperature adjusting gas blowing nozzle based on one embodiment of the present invention, and corresponds to the tubular flame burner described in Patent Document 2 described above. .
  • a tubular flame burner 10A shown in FIG. 2 has a tubular combustion chamber 11 having one end opened like the conventional tubular flame burner 10 shown in FIG. 1, and a fuel gas is provided on the closed end side of the combustion chamber 11.
  • a nozzle (fuel gas blowing nozzle) 12 for blowing gas and a nozzle (oxygen-containing gas blowing nozzle) 13 for blowing oxygen-containing gas are provided toward the tangential direction of the inner wall surface thereof, and a tubular flame 14 is formed in the combustion chamber 11.
  • a nozzle for blowing a temperature adjusting gas 17 for adjusting the temperature of the combustion exhaust gas 19 on the open end side of the combustion chamber 11 (temperature adjusting gas blowing) Nozzle) 16 is provided toward the tangential direction of the inner wall surface of the combustion chamber 11.
  • the tubular flame burner 10A can adjust the temperature of the combustion exhaust gas 19 by blowing and mixing the temperature adjusting gas 17 from the temperature adjusting gas blowing nozzle 16.
  • this tubular flame burner 10A when a low temperature (for example, normal temperature) temperature adjusting gas 17 is blown in a certain amount or more, a misfire (combustion stop) may occur. Further, when the calorific value of the fuel gas was low and the length of the tubular flame 14 was long, misfiring was observed with a smaller amount of the temperature adjusting gas 17.
  • a low temperature for example, normal temperature
  • misfire combustion stop
  • the present inventors examined the cause of the misfire by a combustion test using a combustion test apparatus or a numerical simulation. As a result, it became clear that this misfire occurred by the following mechanism.
  • the temperature adjusting gas 17 after being blown from the temperature adjusting gas blowing nozzle 16 is in its blowing position.
  • a part 18 of the temperature adjustment gas 17 may go back upstream (backflow) along the inner wall surface of the combustion chamber 11, although it is a short distance, trying to diffuse concentrically from I understood.
  • the present inventors obtained the following conclusions from the above results.
  • the temperature adjusting gas 17 is placed at a position after the combustion of the fuel gas and the oxygen-containing gas that form the tubular flame 14 is completed. It is necessary to prevent the temperature adjusting gas 17 from flowing back to the fuel gas blowing nozzle 12 side. Specifically, it is necessary to blow the temperature adjusting gas 17 downstream from the position where the tubular flame 14 is formed, and to prevent the temperature adjusting gas 17 from flowing backward to the fuel gas blowing nozzle 12 side.
  • FIG. 3 shows the tubular flame burner 10B according to the first embodiment of the present invention
  • FIG. 4 is a cross-sectional view showing an installation state of the temperature adjusting gas blowing nozzle 16 in the tubular flame burner 10B.
  • a part 18 of the temperature adjusting gas 17 as shown in FIG. 2 is prevented from flowing back upstream.
  • the temperature adjustment gas 17 is blown in a direction inclined by a predetermined angle ⁇ from the direction orthogonal to the tube axis of the tubular combustion chamber 11 toward the downstream side.
  • the gas blowing nozzle 16 is attached to be inclined by an angle ⁇ .
  • the angle ⁇ is set to 10 ° to 60 ° (10 ° ⁇ ⁇ ⁇ 60 °).
  • the angle ⁇ is preferably 25 ° to 60 °.
  • the adjusting gas is used in addition to the temperature adjusting gas blowing nozzle 16 being inclined by the angle ⁇ .
  • a mechanism for example, a rectifying plate 25 for inclining the flow of the temperature adjusting gas 17 by an angle ⁇ may be provided inside the blowing nozzle 16.
  • the tubular flame burner 10B according to the first embodiment is used for temperature adjustment by inclining the blowing angle of the temperature adjusting gas 17 to the downstream side by a predetermined angle ⁇ (10 ° ⁇ ⁇ ⁇ 60 °).
  • the backflow of the gas 17 is prevented, and as a result, the temperature of the combustion exhaust gas 19 can be adjusted appropriately while accurately preventing misfire while keeping the length of the combustion chamber 11 short.
  • the temperature adjusting gas blowing nozzle 16 extends from the temperature adjusting gas blowing nozzle 16 to the inner wall surface of the combustion chamber 11.
  • the temperature adjusting gas 17 is blown in the tangential direction, but other installation states are possible.
  • the temperature adjusting gas blowing nozzle 16 in the tubular flame burner 10B there are a plurality (three in FIG. 6).
  • the temperature adjusting gas may be blown 17 times from the temperature adjusting gas blowing nozzle 16 in the direction of tangential to the inner wall surface of the combustion chamber 11.
  • the temperature adjustment gas injection nozzles 16 are used to adjust the temperature toward the center of the combustion chamber 11. Gas 17 may be blown in.
  • the inner diameter of the combustion chamber 11 is tubular as shown in FIG. 10 as a cross-sectional view of the installation position of the temperature adjusting gas blowing nozzle 16 in the tubular flame burner 10B 3 .
  • One end of the flame 14 is reduced in the vicinity of the tip, and a predetermined number (three in FIG. 10) of temperature adjusting gas blowing nozzles 16 is supplied to the center of the combustion chamber 11 at the reduced position. You may make it blow.
  • the shape of the temperature adjusting gas blowing nozzle 16 may be a rectangular cross-section nozzle (slit nozzle) as in the tubular flame burner 10B (FIGS. 3 and 4), or the tubular flame burner 10B 1 (FIG. 5). 6), a tubular flame burner 10B 2 (FIGS. 7 and 8), and a tubular flame burner 10B 3 (FIGS. 9 and 10) may be a circular cross-section nozzle.
  • the shape, size, and number of the temperature adjusting gas blowing nozzles 16 may be determined so that the desired flow rate and flow velocity of the temperature adjusting gas can be obtained.
  • FIGS. 11, 12, and 13 show tubular flame burners 10C, 10D, and 10E, respectively, according to Embodiment 2 of the present invention.
  • the turbulent flow generation mechanism 20 is installed on the downstream side of the tubular flame 14 and the upstream side of the temperature adjusting gas blowing nozzle 16 without lowering the temperature of the tubular flame 14 by the back flow of the temperature adjusting gas 17.
  • the mixing and combustion of oxygen and fuel gas is accelerated at a high temperature to forcibly complete the combustion.
  • an orifice 21 is installed as the turbulent flow generation mechanism 20.
  • a lattice (mesh) 22 is installed as the turbulent flow generation mechanism 20.
  • the packed bed 23 (for example, the thing which sintered spherical ceramics) is installed as the turbulent flow production
  • the installation of the turbulent flow generation mechanism 20 prevents the temperature adjusting gas 17 from flowing back upstream along the inner wall surface of the combustion chamber 11, and has the effect of not impairing the stability of the tubular flame 14. .
  • the tubular flame burners 10C, 10D, and 10E in the second embodiment have the turbulent flow generation mechanism 20 installed on the downstream side of the tubular flame 14, thereby reducing the length of the combustion chamber 11. It is possible to appropriately adjust the temperature of the combustion exhaust gas 19 while accurately preventing misfire.
  • combustion is performed from one temperature adjusting gas blowing nozzle 16 as shown in a cross-sectional view of the installation position of the temperature adjusting gas blowing nozzle 16 in FIG.
  • the temperature adjusting gas 17 is blown toward the tangential direction of the inner wall surface of the chamber 11, other installation states are possible.
  • 17 temperature adjusting gases are blown from a plurality of (three in FIG. 15) temperature adjusting gas blowing nozzles 16 toward the tangential direction of the inner wall surface of the combustion chamber 11. You may do it. Further, it is not always necessary to blow the temperature adjusting gas toward the tangential direction of the inner wall surface of the combustion chamber 11. For example, as shown in the cross-sectional view of FIG. The temperature adjusting gas 17 may be blown from the temperature adjusting gas blowing nozzle 16 toward the center of the combustion chamber 11.
  • the temperature adjusting gas blowing nozzle 16 is shaped like a tubular flame burner 10C (FIGS. 11 and 14), a tubular flame burner 10D (FIGS. 12 and 14), and a tubular flame burner 10E (FIGS. 13 and 14). Alternatively, it may be a rectangular cross-section nozzle (slit nozzle) or a circular cross-section nozzle as shown in FIGS.
  • the shape, size, and number of the temperature adjusting gas blowing nozzles 16 may be determined so that the desired flow rate and flow velocity of the temperature adjusting gas can be obtained.
  • the fuel gas to be used is not particularly limited.
  • a low calorific value gas that has a high possibility of misfire when the temperature adjusting gas 17 is blown as shown in FIG. The effect is great when used as a fuel gas.
  • the low calorific value gas is a low calorific value gas having a calorific value of 600 to 900 kcal / Nm 3 , particularly 600 to 800 kcal / Nm 3 , such as blast furnace gas (BFG), CDQ gas, exhaust gas containing a small amount of combustible components, etc. It is.
  • the position where the temperature adjusting gas blowing nozzle 16 is installed is preferably a position after the gas (fuel gas and oxygen-containing gas) forming the tubular flame 14 is combusted. This position varies depending on the calorific value of the fuel gas and the gas flow rate in the combustion chamber.
  • the distance L between the installation position of the fuel gas injection nozzle 12 and the installation position of the temperature adjusting gas injection nozzle 16 is 2 of the inner diameter D of the combustion chamber 11.
  • the position is preferably from 5 to 3.5 times, and more preferably from 2.5 to 3.0 times because the length (burner length) of the combustion chamber 11 can be further shortened.
  • the distance L between the installation position of the fuel gas injection nozzle 12 and the installation position of the temperature adjusting gas injection nozzle 16 is the combustion chamber.
  • the position is preferably 3.5 to 6 times the inner diameter D of 11, and is more preferably 4.0 to 5.0 times because the length (burner length) of the combustion chamber 11 can be further shortened.
  • the required length of the combustion chamber 11 (tubular flame combustion zone length) varies depending on the calorific value of the fuel gas, but in any case, the length of the combustion chamber 11 can be shortened by the present invention. It becomes easy.
  • the temperature and supply amount of the temperature adjustment gas may be set so that the combustion exhaust gas can be adjusted to a desired temperature.
  • the temperature of the preheating gas is preferably 500 ° C. or higher, and preferably 800 ° C. or higher. Should be set.
  • the temperature adjusting gas preferably contains a reducing gas such as CO or H 2 .
  • a reducing gas such as CO or H 2 .
  • one or more of blast furnace gas, converter gas, coke oven gas, and the like can be used. In particular, it is preferable to extract a part of the blast furnace gas and use it as a temperature adjusting gas.
  • Example 1 of the present invention the performance of the tubular flame burner 10B according to Embodiment 1 of the present invention described above was confirmed using the combustion test apparatus 30 shown in FIG.
  • diluted LPG diluted propane gas, calorific value 2400 kcal / Nm 3
  • LPG propane gas
  • Air was used as the oxygen-containing gas.
  • the fuel gas is blown so that the velocity of the fuel gas blown toward the tangential direction of the inner wall surface of the combustion chamber 11 and the velocity of the air are about 9 times the gas velocity after mixing in the combustion chamber 11.
  • the sizes of the nozzle 12 and the oxygen-containing gas blowing nozzle 13 were adjusted.
  • the temperature adjusting gas 17 three types of diluted LPG (diluted propane gas) diluted with nitrogen 10 times, nitrogen, and air are used, and the amount of blowing is the same as the amount of combustion exhaust gas, and the blowing speed is the combustion chamber.
  • the size of the temperature adjusting gas blowing nozzle 16 was adjusted so as to be about 9 times the gas velocity after mixing in No. 11.
  • the inner diameter of the combustion chamber 11 is about 200 mm, and the total length of the tubular flame burner 10 is 3 m in order to investigate the influence of the temperature adjustment gas blowing position.
  • the temperature of the combustion exhaust gas is close to 2000 ° C., so the combustion exhaust gas from the furnace body 31 is cooled by the watering device 32 and then discharged from the chimney 33. Further, the entire furnace body 31 was covered with a refractory, and the piping to the upper roof portion and the sprinkler 32 was water-cooled.
  • a peeping eyeglass, a spark plug, and a luminance detector are installed at the rear end of the tubular flame burner 10. The misfire is detected by the luminance detector, and the propane gas supply is stopped instantaneously.
  • the distance L from the installation position of the fuel gas injection nozzle 12 to the installation position of the temperature adjusting gas injection nozzle 16 is changed. The experiment was conducted.
  • the inclination angle ⁇ of the temperature adjusting gas blowing nozzle 16 is set to 30 °, and the fuel gas blowing nozzle 12
  • four rectifying plates 25 were installed inside the temperature adjusting gas blowing nozzle 16.
  • the fuel gas is changed to a blast furnace gas (calorific value 760 kcal / Nm 3 ), the temperature adjusting gas 17 is also changed to a blast furnace gas, and the oxygen-containing gas is used as it is. I did it.
  • the tubular flame burner 10A based on Embodiment 1 of the present invention, when the distance L was three times the inner diameter D of the combustion chamber 11, the temperature adjustment gas (air) was mixed and misfired at the same time. Further, when the distance L was 3.5 times, 4 times, and 5 times the inner diameter D of the combustion chamber, the maximum combustion was 5 minutes, 20 minutes, and 60 minutes, respectively. On the other hand, when the distance L is 6 times the inner diameter D of the combustion chamber 11, stable combustion for 60 minutes or more was confirmed.
  • tubular flame burner 10B according to the first embodiment of the present invention the tubular flame burner 10B 1 (FIG. 5, FIG. 6), the tubular flame burner 10B 2 (FIGS. 7 and 8), the tubular flame burner 10B 3 Also for (FIGS. 9 and 10), the same experiment as the above-described tubular flame burner 10B was performed. As a result, the same results as the tubular flame burner 10B were obtained.
  • Example 2 of the present invention the performance of the tubular flame burners 10C, 10D, and 10E in Embodiment 2 of the present invention described above was confirmed using the combustion test apparatus 30 shown in FIG.
  • diluted LPG diluted propane gas, calorific value 2400 kcal / Nm 3
  • LPG propane gas
  • Air was used as the oxygen-containing gas.
  • the fuel gas is blown so that the speed of the fuel gas blown in the tangential direction of the inner wall surface of the combustion chamber 11 and the speed of the air are about 9 times the gas speed after mixing in the combustion chamber 11.
  • the sizes of the nozzle 12 and the oxygen-containing gas blowing nozzle 13 were adjusted.
  • the amount of blowing is the same as the amount of combustion exhaust gas, and the blowing speed is the combustion chamber 11.
  • the size of the temperature adjusting gas blowing nozzle 16 was adjusted so as to be about 9 times the gas velocity after mixing inside.
  • the inner diameter of the combustion chamber 11 is about 200 mm, and the total length of the tubular flame burner 10 is 3 m in order to investigate the influence of the blowing position of the temperature adjusting gas 17.
  • the temperature of the combustion exhaust gas is close to 2000 ° C., so the combustion exhaust gas from the furnace body 31 is cooled by the watering device 32 and then discharged from the chimney 33. Further, the entire furnace body 31 was covered with a refractory, and the piping to the upper roof portion and the sprinkler 32 was water-cooled.
  • a peeping eyeglass, a spark plug, and a luminance detector are installed at the rear end of the tubular flame burner 10. The misfire is detected by the luminance detector, and the propane gas supply is stopped instantaneously.
  • the turbulent flow generation mechanism 20 (orifice 21, grid) is provided immediately upstream of the temperature adjusting gas blowing nozzle 16. 22 and a packed bed 23) were installed, and an experiment was conducted in which the distance L from the installation position of the fuel gas injection nozzle 12 to the installation position of the temperature adjusting gas injection nozzle 16 was changed.
  • the orifice 21 was a ring-shaped ceramic plate having a hole with an inner diameter of 120 mm. Thereby, the flow path cross-sectional area of the combustion chamber 11 is temporarily halved, and the pressure loss increases.
  • the lattice 22 was made of ceramic and had 8 lattices in both length and width. Thereby, the flow path cross-sectional area of the combustion chamber 11 is temporarily halved.
  • the packed bed 23 was used by sintering 5 layers of ceramic particles having a diameter of 1/10 of the inner diameter D of the combustion chamber 11.
  • the fuel gas is changed to a blast furnace gas (calorific value 760 kcal / Nm 3 ), the temperature adjusting gas 17 is also changed to a blast furnace gas, and the oxygen-containing gas is used as it is. I did it.
  • the tubular flame burner 10A based on Embodiment 2 of the present invention when the distance L was three times the inner diameter D of the combustion chamber 11, the temperature adjusting gas (air) was mixed and misfired at the same time. Further, when the distance L was 3.5 times, 4 times, and 5 times the inner diameter D of the combustion chamber, the maximum combustion was 5 minutes, 20 minutes, and 60 minutes, respectively. On the other hand, when the distance L is 6 times the inner diameter D of the combustion chamber 11, stable combustion for 60 minutes or more was confirmed.
  • the tubular flame burners 10C, 10D, and 10E according to the second embodiment of the present invention, when the distance L is three times the inner diameter D of the combustion chamber 11, continuous combustion was performed for a maximum of 60 minutes. In addition, when the distance L was 3.5 times, 4 times, 5 times, and 6 times the inner diameter D of the combustion chamber, stable combustion for 60 minutes or more was confirmed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Air Supply (AREA)

Abstract

L'invention porte sur un brûleur à flamme tubulaire qui comprend une chambre de combustion tubulaire ayant une extrémité ouverte et qui comprend, sur le côté d'extrémité fermée de la chambre de combustion, une buse qui insuffle un gaz combustible et une buse qui insuffle un gaz contenant de l'oxygène dirigées dans la direction de la ligne tangente de la surface de sa paroi interne. Le côté d'extrémité ouverte de la chambre de combustion est muni d'une buse qui insuffle un gaz servant à ajuster la température des gaz usés de la combustion, et il est muni d'un moyen anti-reflux servant à empêcher le gaz servant à ajuster la température qui est insufflé par la buse d'insufflation du gaz servant à ajuster la température de refluer vers la buse servant à insuffler le gaz combustible.
PCT/JP2012/006226 2011-09-28 2012-09-28 Brûleur à flamme tubulaire WO2013046708A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020147008949A KR101595678B1 (ko) 2011-09-28 2012-09-28 관형상 화염 버너
JP2013535934A JP5704248B2 (ja) 2011-09-28 2012-09-28 管状火炎バーナー
CN201280047615.9A CN103857961B (zh) 2011-09-28 2012-09-28 管状火焰燃烧器
EP12836569.9A EP2762779B1 (fr) 2011-09-28 2012-09-28 Brûleur à flamme tubulaire

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2011211719 2011-09-28
JP2011-211718 2011-09-28
JP2011-211719 2011-09-28
JP2011211718 2011-09-28
JP2012-185991 2012-08-27
JP2012185991 2012-08-27

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WO2013046708A1 true WO2013046708A1 (fr) 2013-04-04

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EP (1) EP2762779B1 (fr)
JP (1) JP5704248B2 (fr)
KR (1) KR101595678B1 (fr)
CN (1) CN103857961B (fr)
TW (1) TWI524039B (fr)
WO (1) WO2013046708A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20130167A1 (it) * 2013-12-06 2015-06-07 Univ Degli Studi Trieste Bruciatore ad irraggiamento

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112684099B (zh) * 2020-12-18 2022-09-09 郑州大学 一种组装式湍流火焰熄灭装置

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EP2762779A1 (fr) 2014-08-06
JPWO2013046708A1 (ja) 2015-03-26
CN103857961B (zh) 2016-11-23
TWI524039B (zh) 2016-03-01
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TW201314131A (zh) 2013-04-01
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