EP3604925B1 - Dispositif de chauffage et procédé de chauffage - Google Patents

Dispositif de chauffage et procédé de chauffage Download PDF

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Publication number
EP3604925B1
EP3604925B1 EP18778121.6A EP18778121A EP3604925B1 EP 3604925 B1 EP3604925 B1 EP 3604925B1 EP 18778121 A EP18778121 A EP 18778121A EP 3604925 B1 EP3604925 B1 EP 3604925B1
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EP
European Patent Office
Prior art keywords
burner
fuel gas
nozzle
sub
flame
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.)
Active
Application number
EP18778121.6A
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German (de)
English (en)
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EP3604925A4 (fr
EP3604925A1 (fr
Inventor
Yukimasa Horikawa
Kazuaki Hara
Koji Iwata
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.)
JFE Steel Corp
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JFE Steel Corp
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Publication date
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Publication of EP3604925A4 publication Critical patent/EP3604925A4/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • 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
    • 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
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/74—Preventing flame lift-off
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F23Q9/02—Pilot flame igniters without interlock with main fuel supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F23Q9/02—Pilot flame igniters without interlock with main fuel supply
    • F23Q9/04—Pilot flame igniters without interlock with main fuel supply for upright burners, e.g. gas-cooker burners
    • F23Q9/045—Structurally associated with a main-burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q9/00—Pilot flame igniters
    • F23Q9/08—Pilot flame igniters with interlock with main fuel supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2209/00—Safety arrangements
    • F23D2209/20—Flame lift-off / stability

Definitions

  • the disclosure relates to a heating device comprising a burner, in particular, a heating device which can stably hold flame without flame off when a discharge speed is high, and thus can perform heating with extremely high efficiency. Further, the disclosure relates to a heating method using the heating device.
  • Methods of heating an object include various methods such as hot blast heating, infrared heating, heating by an electrical heater, and induction heating. Among them, heating by a burner is extremely commonly used for various uses.
  • FIG. 8 is a schematic diagram illustrating an example of a conventionally used premixing combustion burner.
  • a premixing combustion burner 100 flammable fuel gas 101 and air 102 are mixed in advance in the inside of the premixing combustion burner 100 into mixed gas, and the mixed gas is discharged from the premixing combustion burner 100 and burnt to form flame 103.
  • the amount of heat transfer Q from the flame to a surface of an object to be heated is proportional to the heat transfer coefficient ⁇ and the heat transfer coefficient ⁇ depends on the discharge speed of flame V 0 .
  • the heat transfer coefficient ⁇ is proportional to V 0 1/2 .
  • the heat transfer coefficient ⁇ is proportional to V 0 0.58 . Therefore, to improve the efficiency of heating by a burner, an increase in the discharge speed is required.
  • JP2013-194991 A proposes a method using a burner comprising a main burner and a pilot flame burner which assists combustion in the main burner.
  • the burner of PTL 1 can stabilize flame and increase flame temperature.
  • the burner proposed in PTL 1 is insufficient in terms of the aforementioned improvement of the discharge speed.
  • the development of a heating device is demanded comprising a burner which can be stably used at a further high discharge speed.
  • PTL 2 describes a heating apparatus according to the preamble of claim 1.
  • Our heating device can stably hold flame without flame off even when a discharge speed is high, and thus perform heating with extremely high efficiency.
  • FIG. 1 is a schematic diagram illustrating the structure of a burner in one embodiment.
  • the disclosed heating device is a heating device comprising a burner, in which the burner comprises a main burner part and a sub burner part.
  • the main burner part comprises a fuel gas nozzle configured to discharge fuel gas and an air nozzle configured to discharge air for combustion. Fuel gas and air which are discharged from the main burner part are combusted with each other to thereby form flame for heating an object to be heated.
  • the sub burner part has a function of igniting the fuel gas discharged from the main burner part.
  • the sub burner part is disposed further outward than the main burner part.
  • Such a positional relationship enables stably held flame when a discharge speed is high, compared with other positional relationships.
  • the amount of heat transfer Q from flame to a surface of an object to be heated is proportional to the heat transfer coefficient ⁇ and the heat transfer coefficient ⁇ is larger as the discharge speed of flame V 0 is increased. Therefore, our heating device can hit flame at a high speed against a surface of an object to be heated to thereby perform heating with extremely high efficiency.
  • the object to be heated can be heated to higher temperature more rapidly.
  • the heating device can achieve specific heating temperature with a less amount of fuel gas.
  • the heating device can have a high discharge speed, and thus have flame reaching to a distant position. Therefore, the burner can be located apart from an object to be heated, thus improving the flexibility of design of the device.
  • our heating device can be very preferably used as a heating device for steelmaking processes for heating steelmaking raw materials.
  • the heating device for steelmaking processes includes an ignition device of a sintering machine which is used, for example, for manufacturing sintered ores.
  • the burner is preferably a line burner comprising a plurality of nozzles disposed straightly.
  • Fuel gas is not limited and any flammable gas can be used as the fuel gas.
  • the fuel gas for example, natural gas and LPG (liquefied petroleum gas) are typically available.
  • process gas produced as a by-product can be used as the fuel gas.
  • process gas containing coke oven gas is preferably used.
  • coke oven gas itself i.e., gas containing only coke oven gas
  • M gas in which coke oven gas and blast furnace gas are mixed are preferably used.
  • FIG. 1 which is a schematic diagram of a burner 1 in one embodiment, illustrates a cross sectional structure of the burner 1.
  • the burner 1 comprises a burner body 10, and a main burner part 20 and a sub burner part 30 which are provided in the burner body 10.
  • the burner 1 has at its end (the side on which flame is formed) a recessed part 40, and the recessed part 40 has a bottom part 41 and a tapered part 42 , the tapered part gradually widening from the bottom part 41 to the end of the burner 1.
  • FIG. 2 is a schematic diagram illustrating the structure of the main burner part 20 in one embodiment.
  • the main burner 20 comprises a fuel gas nozzle 21 which discharges fuel gas and an air nozzle 22 which discharges air for combustion.
  • One fuel gas nozzle 21 is provided at the center of the bottom part 41.
  • Two air nozzles 22 are provided symmetrically so as to sandwich the fuel gas nozzle 21.
  • the example illustrated in FIG. 2 illustrates a cross section of one burner, but when a wide object is heated, a plurality of burners is preferably disposed in a perpendicular direction to the paper surface so as to be a line burner.
  • the fuel gas is supplied as illustrated by an arrow mark G, and discharged from the fuel gas nozzle 21.
  • the air for combustion is supplied as illustrated by an arrow mark A, and discharged from the air nozzle 22.
  • the fuel gas is not ignited at the discharge, but as illustrated in FIG. 1 , it is ignited by a sub burner flame 50 formed by the sub burner part 30 to thereby form flame 60.
  • the shapes of the fuel gas nozzle 21 and the air nozzle 22 are not limited and they have any shape. As illustrated in FIG 2 , however, the nozzles preferably have a straight tube structure, which has no cone-like structure on its end. Using a nozzle with a straight tube structure, the discharge speed can be further increased to make the heat transfer coefficient larger on a surface to be heated. As the result, heating efficiency can be further improved. This is because the nozzle with a straight tube structure has little energy loss due to formation of a vortex, compared with when a nozzle which forms a revolving flow is used, and thus a decrease in the gas speed after discharge is reduced.
  • the diameters (hereinafter, referred to as nozzle diameter) of the fuel gas nozzle 21 and the air nozzle 22 are preferably determined so that the discharge speed in a flow rate range in ordinary use may be 50 Nm/s to 80 Nm/s in order to increase the heating efficiency of the burner.
  • the discharge speed at maximum combustion is preferably 150 Nm/s or less. The definition of the discharge speed will be discussed later.
  • a specific diameters of the fuel gas nozzle 21 and the air nozzle 22 are not limited, but when the diameter is 3 mm or more, the reduction in the gas speed after the gas discharge from the nozzle can be further prevented. Therefore, the diameter is preferably 3 mm or more, and more preferably 5 mm or more.
  • an upper limit of the diameter is not limited, but when the diameter is 30 mm or less, the heat load on the burner is in a more preferable range and thus the life of the burner can be extended. Further, by providing many nozzles with a small diameter such as 30 mm or less, uniform heating can be performed, compared with when a small number of nozzles with a large diameter are provided. Therefore, the diameter is preferably 30 mm or less.
  • the diameter of the fuel gas nozzle 21 may or may not be the same as the diameter of the air nozzle 22.
  • the interval (nozzle pitch) L 1 between the fuel gas nozzle 21 and the air nozzle 22 preferably satisfies 2 d NG ⁇ L 1 ⁇ 15 d NA , where d NG is a diameter of the fuel gas nozzle 21 and d NA is a diameter of the air nozzle 22.
  • the interval (nozzle pitch) L 2 between the fuel gas nozzles of the burners preferably satisfies 2 d NG ⁇ L 2 ⁇ 15 d NA .
  • the main burner part 20 comprises pressure equalizing chambers 23 on the upstream side of each of the fuel gas nozzle 21 and the air nozzles 22, and comprises, on the opposite side (upstream side) of the nozzles of the pressure equalizing chambers 23, perforated plates 24 having an opening through which fuel gas or air passes.
  • gas can be discharged more uniformly, thus further stabilizing flame and further increasing the discharge speed.
  • the pressure equalizing chamber 23 may be provided only on the upstream side of either the fuel gas nozzle 21 or the air nozzles 22, but as illustrated in FIG. 2 , the pressure equalizing chamber is preferably provided on the upstream side of both the fuel gas nozzle 21 and the air nozzles 22.
  • the pressure equalizing chamber is a structure provided on the upstream side of the nozzle to relieve an effect of the fluctuation of gas supply pressure.
  • the pressure equalizing chamber comprises a plate (diaphragm plate) having one or more openings on the upstream side of the nozzle, and a space between the diaphragm plate and the nozzle.
  • the upstream side of the diaphragm plate is connected to the space only through the opening of the diaphragm plate.
  • the total area of the openings of the diaphragm plate is smaller than the cross-sectional area at a plane perpendicular to the discharge direction of the nozzle in the space. Further, the total area of the opening of the nozzle is smaller than the cross-sectional area at a plane perpendicular to the discharge direction of the nozzle in the space.
  • the sub burner part has a function of igniting fuel gas discharged from the main burner part and combusting the fuel gas.
  • the fuel gas discharged from the main burner part is ignited by flame (sub burner flame) formed by the sub burner part. Therefore, the sub burner part typically comprises a fuel gas outlet for sub burner flame and an air outlet for sub burner flame to form sub burner flame.
  • the air for sub burner flame is used to combust the fuel gas for sub burner flame, thus forming sub burner flame.
  • the "fuel gas for sub burner flame” may be referred to simply as "fuel gas”
  • the "air for sub burner flame” may be referred to simply as "air”.
  • our heating device comprises the sub burner part further outward than the main burner part to combust the fuel gas discharged from the main burner part.
  • our heating device can hold flame stably under conditions in which a discharge speed of the fuel gas from the main burner is high. Therefore, our burner is advantageous in that the burner does not need to have a combustion chamber structure to stably hold flame on the forward side of the main burner, i.e., a structure protruding forward from the burner to surround the main burner and the sub burner.
  • our heating device holds flame of the main burner in a space forward in the gas discharge direction from the main burner.
  • a combustion chamber structure or a cone-like structure made up of a refractory material to stably hold flame on the forward side of the main burner is provided to thereby hold flame in the inside of the structure and hold flame which touches a surface of the structure.
  • our heating device can hold high-speed flame from the main burner without such a structure by holding flame of the main burner in the space using flame of the sub burner. To hold such flame, the intersection point of the gas discharge direction of the main burner part and the gas discharge direction of the sub burner part is in an outer side of the recessed part of the burner (outside of the burner).
  • FIG. 3 is a schematic diagram illustrating the structure of a sub burner part 30 in one embodiment.
  • the sub burner part 30 includes a surface combustion burner.
  • the surface combustion burner has a porous plate 31 at its end and the porous plate 31 is supplied with fuel gas for sub burner flame and air for sub burner flame as illustrated by arrow marks G and A, respectively.
  • a flow accompanied with the airflow is formed near the end of the burner 1, in particular, in the inside of the recessed part 40.
  • the flow speed of gas discharged from the main burner part is 50 m/s
  • the flow speed of the accompanied flow is as high as 20 m/s to 30 m/s.
  • sub burner flame 50 formed by the sub burner part 30 may be unstable.
  • the surface combustion burner has an ignition point in the surface or the inside of the porous plate. Therefore, the sub burner flame can be stably held, not being affected by the accompanied flow.
  • any plate member made up of a porous body can be used.
  • the porous body can be made up of one or more materials selected from the group consisting of metal, alloy, and ceramic.
  • a metal mesh laminate of metal fibers
  • the surface of the porous plate 31 is preferably disposed on the same plane as that of the tapered part 42.
  • the main burner part 20 and the sub burner part 30 are disposed so that the discharge axis (discharge direction) of the main burner part 20 and the discharge axis (discharge direction) of the sub burner part 30 are crossed with each other in their extension lines.
  • the bottom part 41 and the tapered part 42 which form the recessed part 40 preferably make an angle ⁇ of 20° or more.
  • ⁇ is preferably 30° or more.
  • ⁇ may have any upper limit, but typically, ⁇ is preferably 80° or less, and more preferably 60° or less.
  • the distance between the main burner part and the sub burner part is determined so that flame (sub burner flame 50) of the sub burner part can reach the discharge flow from the main burner part.
  • the effective length of flame of the sub burner part is F
  • the distance of the flame of the sub burner part reaching in the direction parallel to the bottom part 41 is F ⁇ sin ⁇ .
  • the main burner part and the sub burner part are disposed so that the distance between the edge position of the main burner and the center position of the sub burner part may be F ⁇ sin ⁇ or less in the direction parallel to the bottom part 41.
  • the effective length of flame can be determined, based on the measurement result of a flame temperature, as the length of a region having gas ignition temperature or more from the combustion surface or the tapered surface.
  • FIG. 4 is a schematic diagram illustrating an example of the structure of the sub burner part in another embodiment.
  • the sub burner part 30 has a tubular nozzle with a diameter d as a sub burner nozzle 32.
  • the sub burner nozzle 32 has an outer tube and an inner tube which share a common axis.
  • the inner tube is supplied with fuel gas for sub burner flame as illustrated by an arrow mark G, and the fuel gas for sub burner flame is discharged from the end of the inner tube.
  • the outer tube is supplied with air for sub burner flame as illustrated by an arrow mark A, and the air for sub burner flame is discharged from the end of the outer tube.
  • the end of the sub burner nozzle 32 is provided further inward by a distance of d or more than a surface of the tapered part 42 as illustrated in FIG. 4 .
  • the distance from a surface of the tapered part 42 to the end of the sub burner nozzle 32 is d or more.
  • the fuel gas for sub burner flame discharged from the sub burner nozzle 32 is ignited in a space 33 to form flame (sub burner flame) so that the flame may extend outward beyond a surface of the tapered part 42.
  • the end of the sub burner nozzle 32 is thus at an inner position of the burner body 10, thereby preventing the aforementioned effect of an accompanied flow to enable sub burner flame to be stably held without using a surface combustion burner.
  • the end of the sub burner nozzle 32 is also preferably provided further inward by a distance of d or more than a surface of the tapered part 42.
  • the distance from a surface of the tapered part 42 to the end of the sub burner nozzle 32 is preferably 2d or more.
  • the distance from a surface of the tapered part 42 to the end of the sub burner nozzle 32 is preferably 15d or less, and more preferably 4d or less.
  • our heating device can stably hold flame without flame off when a discharge speed is high, and thus perform heating with extremely high efficiency.
  • the discharge speed at use is not limited and can be any speed in a range where flame can be held, but in terms of heating efficiency, the discharge speeds of fuel gas and air discharged from the main burner part are preferably 50 Nm/s or more, more preferably 60 Nm/s or more, and further preferably 65 Nm/s or more. Such an extremely high discharge speed has not been achieved by conventional burners.
  • the cross-sectional area of the nozzle is the cross-sectional area of the outlet part of the nozzle.
  • the discharge speed of the burner can be determined by dividing the sum of the flow rates of fuel gas and air which are discharged from the burner by the cross-sectional area in the outlet of the cone part.
  • the discharge speed of fuel gas is preferably roughly equivalent to the discharge speed of air for combustion.
  • the ratio of the discharge speed of fuel gas to the discharge speed of air for combustion is preferably 0.8 to 1.2.
  • the discharge speed ratio in the nozzle opening part in front of the cone is preferably 0.8 to 1.2.
  • the heating device preferably comprises a flow rate adjuster capable of separately adjusting the flow rate of fuel gas in the main burner part and the flow rate of fuel gas in the sub burner part. Further, the content of air for combustion can be determined by multiplying the flow rate of fuel gas by the theoretical air content of the fuel gas and the air ratio.
  • the heating device preferably comprises a flow rate adjuster capable of separately adjusting the flow rate of air for combustion in the main burner part and the flow rate of air for combustion in the sub burner part.
  • the flow rate adjuster includes a flow adjusting valve.
  • the flow rate of fuel gas in the sub burner part is preferably 15 % or more.
  • a ratio F1 : F2 is preferably 85 : 15 or less (F1 / F2 ⁇ 85 / 15), where F1 is a flow rate of fuel gas discharged from the main burner part, and F2 is a flow rate of fuel gas for sub burner flame discharged from the sub burner part.
  • the flow rate of fuel gas in the sub burner part is preferably 30 % or less.
  • F1 : F2 is preferably 70 : 30 or more (F1 / F2 ⁇ 70 / 30).
  • Example 1 a burner illustrated in FIGS. 1 to 3
  • Example and Comparative Examples described above each have a burner with a width of 1 m in the direction perpendicular to the cross section illustrated in FIGS. 1 and 8 .
  • Table 1 lists the size of a nozzle and the cross-sectional area of a discharge part.
  • Table 1 also lists the ratio of a flow rate of fuel gas in the main burner part and a flow rate of fuel gas in the sub burner part (flow rate ratio of fuel gas) in Comparative Example 2 and Example 1.
  • Comparative Example 1 used a slit-shaped nozzle which had a width of 10 mm and a length of 1 m, and had a cross-sectional shape illustrated in FIG. 8 .
  • Comparative Example 2 used 60 pairs of nozzles of FIG. 1 of PTL 1 which were disposed linearly over 1 m in the width direction of the burner. Each burner of PTL 1 had two fuel gas nozzles, and thus the number of the fuel gas nozzles was 120 in total.
  • Example 1 used 50 pairs of nozzles of FIGS. 1 and 2 of the disclosure, i.e., 50 fuel gas nozzles, which were disposed linearly over 1 m in the width direction of the burner. When 50 pairs of nozzles were disposed in the burner of Comparative Example 2, flame was unstable. Therefore, 60 pairs of nozzles were disposed to stabilize flame.
  • M gas mixed gas of coke oven gas and blast furnace gas
  • the main components of the M gas were H 2 : 26.5 %, CO: 17.6 %, CH 4 : 9.1 %, and N 2 : 30.9 %.
  • Example 1 when the flow speed (discharge speed) in the straight tube part of the nozzle was more than 30 Nm/s, flame was not held and blowoff was caused.
  • the flow speed in the straight tube corresponds to 3 Nm/s in terms of a flow speed in the end of the cone part.
  • Comparative Example 2 when the flow speed (discharge speed) in the straight tube part of the nozzle was more than 40 Nm/s, flame was not held and blowoff was caused.
  • Example 1 which had a condition of the discharge speed being more than 40 Nm/s, had stable flame. With the discharge speed being more than 100 Nm/s, flame became unstable. With the discharge speed being 120 Nm/s, blowoff was caused.
  • FIG. 5 illustrates an example of a flow speed in an actual ordinary use.
  • FIG. 6 illustrates the heating power of the burners of Example and Comparative Examples which had the same flow rate of fuel gas and the same air ratio. It is found that in Example 1, the heating power was extremely increased, compared with Comparative Example 1 and Comparative Example 2.
  • Comparative Example 1 and Example 1 were measured at the same flow speed of fuel gas and the same air ratio. Comparative Example 1 had combustion in the inside of the cone in front of the burner, and much of the fuel gas was combusted before the fuel gas reached an object to be heated.
  • Example 1 the fuel gas discharged from the main burner was ignited by flame of the sub burner in the vicinity of the middle part between the burner and an object to be heated, and started to combust. Much fuel gas was combusted near the object to be heated.
  • Example 1 flame collided against the object to be heated at high speed and transferred more energy to the surface to be heated, and thus, even though the gas temperature near the object to be heated appeared to be nearly equal between Comparative Example 1 and Example 1, the heating power was extremely increased in Example 1 as illustrated in FIG. 7 .

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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)
  • Gas Burners (AREA)

Claims (10)

  1. Dispositif de chauffage comprenant un brûleur (1,10), dans lequel le brûleur (1, 10) comprend :
    une partie brûleur principal (20) présentant une buse à gaz combustible (21) configurée pour rejeter du gaz combustible et une buse à air (22) configurée pour rejeter de l'air pour combustion ; et
    une partie sous-brûleur (30) positionnée davantage vers l'extérieur que la partie brûleur principal (20) et configurée pour brûler le gaz combustible rejeté de la partie brûleur principal (20),
    dans lequel le brûleur (1, 10) comprend en outre au niveau de son extrémité une partie évidée (40) présentant une partie inférieure (41) et une partie conique (42), caractérisé en ce que la partie conique (42)
    s'élargit progressivement depuis la partie inférieure (41) jusqu'à l'extrémité du brûleur (1, 10), dans lequel la partie brûleur principal (20) est disposée sur la partie inférieure (41), et dans lequel la partie sous-brûleur (30) est disposée sur la partie conique (42)
    et en ce qu'un point d'intersection d'une direction de rejet de gaz de la partie brûleur principal (20) et de la direction de rejet de gaz de la partie sous-brûleur (30) est disposé dans un côté extérieur de la partie évidée (40) du brûleur (1, 10).
  2. Dispositif de chauffage selon la revendication 1, dans lequel la partie brûleur principal (20) comprend une chambre d'égalisation de pression (23) sur un côté amont d'une ou des deux parmi la buse à gaz combustible (21) et la buse à air (22).
  3. Dispositif de chauffage selon la revendication 1 ou 2, dans lequel la buse à gaz combustible (21) et la buse à air (22) présentent une structure à tube droit.
  4. Dispositif de chauffage selon l'une quelconque des revendications 1 à 3, dans lequel la partie inférieure (41) forme un angle 0 de 20° ou plus par rapport à la partie conique (42).
  5. Dispositif de chauffage selon l'une quelconque des revendications 1 à 4, dans lequel la partie sous-brûleur (30) est un brûleur à combustion de surface.
  6. Dispositif de chauffage selon l'une quelconque des revendications 1 à 5,
    dans lequel la partie sous-brûleur (30) présentant une buse de sous-brûleur sélectionnée parmi une buse tubulaire d'un diamètre d et une buse à fente d'une largeur d dans une direction côté court, et
    dans lequel la buse de sous-brûleur est disposée de telle sorte que son extrémité est située plus vers l'intérieur d'une distance de d ou plus et de 15d ou moins qu'une surface de la partie conique (42).
  7. Dispositif de chauffage selon l'une quelconque des revendications 1 à 6, comprenant un dispositif d'ajustement de débit capable d'ajuster indépendamment un débit dans la partie brûleur principal (20) et un débit dans la partie sous-brûleur (30).
  8. Procédé de chauffage utilisant le dispositif de chauffage selon l'une quelconque des revendications 1 à 7.
  9. Procédé de chauffage selon la revendication 8, dans lequel chacun parmi le gaz combustible et l'air pour combustion, qui sont rejetés depuis la partie brûleur principal (20), présente une vitesse de rejet de 50 Nm/s ou plus.
  10. Procédé de chauffage selon la revendication 8 ou 9, dans lequel un rapport de F1 : F2 est 70 : 30 à 85 : 15, F1 étant un débit du gaz combustible qui est rejeté de la partie brûleur principal (20), F2 étant un débit du gaz combustible pour flamme de sous-brûleur (50) qui est rejeté depuis la partie sous-brûleur (30).
EP18778121.6A 2017-03-27 2018-03-19 Dispositif de chauffage et procédé de chauffage Active EP3604925B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017061583 2017-03-27
PCT/JP2018/010774 WO2018180694A1 (fr) 2017-03-27 2018-03-19 Dispositif de chauffage et procédé de chauffage

Publications (3)

Publication Number Publication Date
EP3604925A1 EP3604925A1 (fr) 2020-02-05
EP3604925A4 EP3604925A4 (fr) 2020-04-01
EP3604925B1 true EP3604925B1 (fr) 2022-05-11

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JP (1) JP6690779B2 (fr)
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Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2822864A (en) * 1953-09-28 1958-02-11 Babcock & Wilcox Co Combination fluid fuel burner
US3302596A (en) * 1966-01-21 1967-02-07 Little Inc A Combustion device
US4175920A (en) * 1975-07-31 1979-11-27 Exxon Research & Engineering Co. Multiple fuel supply system for staged air burners
JPS54115645U (fr) * 1978-02-02 1979-08-14
JPS56158716U (fr) * 1980-04-25 1981-11-26
JPS58124U (ja) * 1981-06-20 1983-01-05 大阪瓦斯株式会社 ラジアントチュ−ブバ−ナ
JPS5899607A (ja) * 1981-12-07 1983-06-14 Matsushita Electric Ind Co Ltd 燃焼装置
JPS5899607U (ja) * 1981-12-28 1983-07-06 東芝機械株式会社 計測装置
EP0432153B1 (fr) * 1988-09-02 1994-12-28 American Combustion, Inc. Procede et appareil pour produire une flamme extremement lumineuse
JP2739884B2 (ja) * 1991-12-20 1998-04-15 東京瓦斯株式会社 窒素酸化物低発生バ−ナ
JP2788698B2 (ja) * 1992-11-24 1998-08-20 日本ファーネス工業株式会社 低ＮＯｘ燃焼法及びそのバーナ
JP2849977B2 (ja) * 1994-03-30 1999-01-27 矢崎総業株式会社 ガスバーナ
JP3282944B2 (ja) * 1994-07-18 2002-05-20 トヨタ自動車株式会社 低ＮＯｘバーナ
JP4018809B2 (ja) * 1998-06-10 2007-12-05 株式会社Ｎｆｋホールディングス ガスタービン排ガス利用の追焚燃焼法及びこの追焚燃焼法を利用する追焚バーナ
US20070037106A1 (en) * 2005-08-12 2007-02-15 Kobayashi William T Method and apparatus to promote non-stationary flame
US20070231761A1 (en) * 2006-04-03 2007-10-04 Lee Rosen Integration of oxy-fuel and air-fuel combustion
JP4971008B2 (ja) * 2007-03-30 2012-07-11 東邦瓦斯株式会社 ガスバーナ
JP4963621B2 (ja) * 2007-03-30 2012-06-27 オリンピア工業株式会社 低ＮＯｘガスバーナ
CN101520178A (zh) * 2009-04-07 2009-09-02 湖南吉祥石化科技股份有限公司 高强力混合低污染排放酸性气体燃烧器
JP6246455B2 (ja) * 2012-03-19 2017-12-13 Ｊｆｅスチール株式会社 焼結機点火炉用バーナ
JP5320517B1 (ja) * 2013-04-08 2013-10-23 新日鉄住金エンジニアリング株式会社 燃焼装置及びその運転方法、並びに回転炉床式加熱炉
JP6168875B2 (ja) * 2013-06-21 2017-07-26 日本ファーネス株式会社 燃料二段燃焼式バーナ装置及び燃料二段燃焼方法
JP6102009B2 (ja) * 2015-02-27 2017-03-29 大陽日酸株式会社 気体燃料バーナ、及び気体燃料バーナによる加熱方法
JP6043393B2 (ja) * 2015-03-31 2016-12-14 大陽日酸株式会社 バーナの火炎形成方法
JP6480287B2 (ja) * 2015-08-13 2019-03-06 中外炉工業株式会社 工業用炉及び工業用炉の点火方法
CN107923613B (zh) * 2015-09-14 2019-09-17 克利尔赛恩燃烧公司 穿孔火焰保持器的部分转变的火焰启动
CN106152136B (zh) * 2016-08-26 2018-11-16 佛山市科皓燃烧设备制造有限公司 燃气引射超低NOx燃料稀释技术蓄热式烧嘴

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EP3604925A4 (fr) 2020-04-01
JPWO2018180694A1 (ja) 2019-11-21
WO2018180694A1 (fr) 2018-10-04
KR102273957B1 (ko) 2021-07-06
TW201839342A (zh) 2018-11-01
CN110325794B (zh) 2021-07-20
TWI670457B (zh) 2019-09-01
EP3604925A1 (fr) 2020-02-05
JP6690779B2 (ja) 2020-04-28
CN110325794A (zh) 2019-10-11

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