WO2013047183A1 - 壁面輻射式バーナーユニット - Google Patents

壁面輻射式バーナーユニット Download PDF

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Publication number
WO2013047183A1
WO2013047183A1 PCT/JP2012/073140 JP2012073140W WO2013047183A1 WO 2013047183 A1 WO2013047183 A1 WO 2013047183A1 JP 2012073140 W JP2012073140 W JP 2012073140W WO 2013047183 A1 WO2013047183 A1 WO 2013047183A1
Authority
WO
WIPO (PCT)
Prior art keywords
wall surface
burner
radiation
air flow
combustion
Prior art date
Application number
PCT/JP2012/073140
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
健介 川端
祐作 河本
智樹 片山
武史 大橋
Original Assignee
中外炉工業株式会社
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 中外炉工業株式会社 filed Critical 中外炉工業株式会社
Priority to CN201280041924.5A priority Critical patent/CN103765101B/zh
Priority to KR1020147000986A priority patent/KR101959098B1/ko
Publication of WO2013047183A1 publication Critical patent/WO2013047183A1/ja

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • 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
    • F23D14/66—Preheating the combustion air or gas
    • 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
    • F23D14/84—Flame spreading or otherwise shaping
    • 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
    • F23L15/00—Heating of air supplied for combustion
    • F23L15/02—Arrangements of regenerators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • the present invention relates to a wall radiation type burner unit capable of heating a treatment material more uniformly.
  • the treatment material and the atmosphere in the furnace are heated from the furnace wall positioned on the side of the treatment material toward the treatment material by a burner that generates a flame substantially parallel to the treatment material.
  • a burner that generates a flame substantially parallel to the treatment material.
  • fuel is jetted radially to form a conical flame. That is, since the cross-sectional shape of the flame is substantially circular, the heating state is different between the portion near the flame and the portion away from the flame in the treatment material, and it is difficult to uniformly heat the treatment material.
  • Patent Documents 1 and 2 In order to form a flame having a flat shape and a thin thickness to heat the treated material to cope with such a problem, apparatuses for spreading the flame are known in Patent Documents 1 and 2.
  • the apparatus for expanding a flame and the furnace using this apparatus of Patent Document 1 has a main nozzle for guiding a main jet flow consisting of one of combustion gas and combustion support gas, and flows around the main jet flow and is substantially constant.
  • Nozzle which has a wide width and guides the secondary jet flow consisting of the other of combustion gas and combustion support gas, and the secondary jet flow is drawn into the main jet flow by Coanda effect to deflect the secondary jet flow And a curved surface disposed tangentially to the secondary jet so as to mix the secondary jet and the main jet to form a frame.
  • the "walking beam type metal heating furnace equipped with a slit nozzle type burner or slit nozzle type regenerating burner” of Patent Document 2 uses a slit type burner having a flat burner flame or a slit nozzle type regeneration burner as a side wall of the furnace. It will be installed to construct a new low-cost, energy-saving walking beam type metal heating furnace with a low overall cost of about 2,500 mm and a short height.
  • the present invention was conceived in view of the above-mentioned conventional problems, and provides a wall radiation type burner unit capable of heating the processing material more uniformly and also capable of miniaturizing the furnace body.
  • the purpose is to
  • a wall surface radiation type burner unit comprises a furnace body element forming a radiation wall surface facing a processing material, a burner forming a flat flame along the radiation wall surface of the furnace body element, and heating the radiation wall surface. And heat the treatment material by radiation heat from the radiation wall surface.
  • the flat flame may be along the radiation wall surface by an air flow of combustion air generating a Coanda effect.
  • the burner includes an opening formed in the furnace body element, an opening for blowing out a flat flame, and an air flow path formed in the furnace body element and connected to the opening so as to circulate combustion air.
  • the air flow path and the radiation wall surface are connected by a continuous curved surface via the opening.
  • the air flow path of the burner may be located at the back of the curved surface, and a curved path may be formed in a direction in which the curved surface is folded back.
  • the burner may include a fuel injection unit that injects fuel into the air flow path along the curved path.
  • the burner has a heat storage portion for warming the combustion air by exhaust gas, and is configured by arranging a pair of regenerative burner devices alternately performing a combustion operation and an exhaust operation with the radiation wall surface interposed therebetween, It is characterized in that the flat flame by the combustion operation of the other above-mentioned regenerative burner device is made to flow along the concerned radiation wall surface by the airflow which follows the radiation wall surface generated with the exhaust suction operation of the regenerative burner device. .
  • the processing material can be heated more uniformly, and the furnace can be miniaturized.
  • FIG. 1 It is a partially broken perspective view of a heating furnace provided with the burner unit concerned showing a suitable embodiment of a wall surface radiation type burner unit concerning the present invention. It is a principal part longitudinal cross-sectional view of the wall surface radiation type burner unit shown in FIG. It is an A section enlarged view in FIG. It is a top view of the wall surface radiation type burner unit shown in FIG. It is explanatory drawing explaining the effect
  • FIG. 1 is a partially broken perspective view for explaining the configuration of a heating furnace 1 provided with a wall surface radiation type burner unit according to the present embodiment.
  • the heating furnace 1 according to the present embodiment constitutes, for example, a part of a continuous heating furnace in which the processing material 2 being transported is heated by passing through the preheating zone, the heating zone, and the soaking zone.
  • the heating furnace 1 is internally provided with a transport unit 3 such as a walking beam for transporting the processing material 2 to be heated.
  • the wall radiation type burner unit 4 comprises a furnace body element 5 and a pair of alternating combustion type regenerative burner devices 7 constituting a burner.
  • the alternating combustion type regenerative burner device 7 has a heat storage section 11 which warms the combustion air C with the exhaust E (see FIG. 2) so that the combustion operation and the exhaust operation are alternately performed. It has become.
  • the treatment material 2 conveyed by the conveyance unit 3 is heated by radiant heat from the radiation wall Z which is opposed to the treatment material 2 and is burned by the burner device 7 to be heated to a bright state.
  • the radiation wall surface Z of the inner surface of the heating furnace 1 which generates radiant heat to heat the processing material 2 is the inner surface located above the processing material 2, that is, the ceiling surface 6 of the heating furnace 1 (see FIG. 2).
  • the case where the ceiling surface 6 is formed by the furnace body element 5 of the wall radiation type burner unit 4 will be described as an example. That is, in the illustrated example, the furnace body element 5 forms the furnace ceiling portion of the furnace body 1a, and constitutes the furnace body 1a together with the left and right furnace wall portions and the hearth portion.
  • the furnace body element 5 may form a furnace wall portion or a hearth portion, and even in such a case, the furnace body 1a is configured together with other furnace ceiling portions and the like.
  • FIG. 2 is a longitudinal sectional view of the main part of the wall surface radiation type burner unit 4 according to the present embodiment
  • FIG. 3 is an enlarged view of a portion A in FIG. 2
  • FIG. 4 is an upper surface of the wall surface radiation type burner unit 4 FIG.
  • the fuel injection unit 10 described later is omitted, and the air flow passage 8 and the like are shown.
  • the wall surface radiation type burner unit 4 has a ceiling surface 6 as the inner surface of the heating furnace 1 and a furnace body element 5 made of a heat-resistant material and a flat flame f along the ceiling surface 6 A pair of heat storage alternating combustion burner devices 7 for heating the ceiling surface 6 are provided.
  • the furnace body element 5 is in the form of a rectangular parallelepiped having a substantially rectangular ceiling surface 6 whose longitudinal direction is the direction orthogonal to the conveyance direction of the processing material 2 conveyed into the heating furnace 1 and constitutes the air flow path 8
  • One flow path 8a protrudes upward.
  • Openings 9 are formed in the ceiling surface 6 of the furnace body element 5 in the form of slits along the transport direction on both end sides in the longitudinal direction.
  • the pair of regenerative burner devices 7 blows out a flat flame f from the opening 9 at one combustion operation, sucks the exhaust E from the opening 9 at the other exhaust operation, and is pinched by these two openings 9
  • the area to be heated becomes the radiation wall surface Z which is heated by the flat flame f to generate solid radiation.
  • the air flow path 8 includes the first flow path 8 a and a second flow path 8 b provided on the upper side of the furnace element 5 and connected to the heat storage portion 11.
  • a communication pipe 12 for suction and discharge is connected to the heat storage section 11.
  • the burner apparatus 7 of the heat storage alternating combustion type is configured in pairs.
  • the air passage 8 of one burner device 7 is used as a combustion gas supply passage for supplying the fuel F and the combustion air C
  • the air passage 8 of the other burner device 7 is exhausted the exhaust E. It is used as an exhaust gas discharge path, and is alternately burned by switching in a switching operation.
  • the heat storage unit 11 provided between each air flow passage 8 and the communication pipe 12 stores the exhaust heat when discharging the exhaust gas E at the time of exhaust operation, and when the combustion air C flows at the time of combustion operation It is designed to heat it.
  • These burner devices 7 are arranged on the furnace element 5 in a symmetrical shape and structure.
  • the air flow path 8 and the radiation wall surface Z are formed so as to be connected by the continuous curved surface S through the opening 9.
  • a curved path Y is formed in the air flow path 8 so as to be positioned behind the curved surface S and directed in a direction in which the curved surface S is folded back.
  • the first flow path 8a of the air flow path 8 is connected to the downward straight path D and the opening 9 side so as to project from the radiation wall Z to the opposite side in the longitudinal direction of the furnace element 5 And a curved path Y.
  • the first flow passage 8 a is straight downward in the upper part, and is curved in the lower part on the side of the ceiling surface 6 so as to project to the opposite side to the radiation wall surface Z from the direction orthogonal to the ceiling surface 6 . More specifically, as shown in FIG. 3, the curved path Y is curved toward the ceiling surface 6 while away from the radiation wall Z on the straight path D side, and approaches the radiation wall Z on the opening 9 side. While curving to the ceiling surface 6 side. As a result, at the time of the combustion operation, the combustion air C and the fuel F are blown out obliquely along the radiation wall surface Z from the opening 9.
  • the horizontal part of the 2nd flow path 8b of the air flow path 8 connected to the thermal storage part 11 is a cross-sectional circular shape.
  • the vertical portion of the second flow passage 8b connected to the first flow passage 8a is directed downward to match the shape of the first flow passage 8a matched to the shape of the opening 9, as shown in FIG. Is gradually formed into a wide rectangular shape.
  • the flame f blown out from the opening 9 has a thin flat shape.
  • the opening area of the opening 9 is set to be slightly smaller than the cross-sectional area of the first flow passage 8 a, and the flow velocity at the opening 9 is increased.
  • the fuel injection portion 10 of each burner device 7 is provided in a pair on both ends in the longitudinal direction of each opening 9 and injects the fuel F into the air flow path 8 along the curved path Y.
  • the fuel injection portion 10 is provided on the radiation wall surface Z side of the first flow passage 8a, and the fuel F is injected toward the curved outer projecting surface Y1.
  • the fuel injection port 10 a of the fuel injection unit 10 is located at the lower portion of the straight path D, whereby the combustion air C and the fuel F are merged with the upstream side of the curved path Y as the merging portion X.
  • the curved surface S is directed to the curved path Y on the downstream side of the merging portion X where the fuel F from the fuel injection portion 10 and the combustion air C merge.
  • a baffle portion 13 for stirring and mixing the fuel F and the combustion air C is formed around the reversing portion T which is folded back.
  • baffles 13a as projections protruding from the inner curved surface Y2 opposed to the outer curved surface Y1 are provided at appropriate intervals in the longitudinal direction of the opening 9. The combustion air C and the fuel F are agitated by the baffle 13a to promote mixing.
  • the combustion air C flowing smoothly, avoiding the baffle 13a, is made to blow out vigorously from the opening 9 in association with the stirring-mixed combustion air C and the fuel F. Both actions can maintain both the fuel / air mixing and the flow velocity even with the flat flame f.
  • the number of fuel injection units 10 is not limited to two (two), and may be one or three or more.
  • the flame f blown out from the opening 9 becomes a flat flame f that travels along the radiation wall Z of the ceiling surface 6 by the Coanda effect acting on the air flow of the combustion air C by the curved surface S connected to the radiation wall Z. Furthermore, in the present embodiment, the flat flame f caused by the combustion operation of the other burner device 7 is surely directed along the radiation wall surface Z by the air flow along the radiation wall surface Z generated along with the exhaust gas suction operation of one burner device 7 , The entire ceiling surface 6 is in a bright state. As a result, the entire surface of the radiation wall Z can be efficiently heated to generate solid radiation, and the processing material 2 can be uniformly heated.
  • the radiation wall surface Z of the furnace body element 5 is heated by the flat flame f generated by the pair of burner devices 7 of the thermal storage alternating combustion type and heated. Since the treatment material 2 is heated by the radiant heat from the entire wall surface Z, the treatment material 2 can be heated more uniformly than in the case where the flame of the burner is directly applied for heating.
  • the radiant wall Z can be efficiently heated.
  • the flat flame f by the combustion operation of the other burner device 7 can be made to follow the said radiation wall surface Z by the air flow which follows the radiation wall surface Z generated along with the exhaust gas suction operation of one burner device 7,
  • the radiation wall Z can be efficiently heated by the flat flame f.
  • the burner device 7 is formed with an opening 9 formed in the furnace body element 5 and formed in the opening 9 for blowing out the flat flame f, and formed in the furnace body element 5 and connected to the opening 9 to circulate the combustion air C Since the air flow path 8 and the radiation wall surface Z are connected by the continuous curved surface S through the opening 9, the flame f blown out from the opening 9 is radiated by the Coanda effect. It can be made to follow the wall surface Z. Then, the flat flame f is blown out from one opening 9 and is drawn along the radiation wall surface Z to the other opening 9 by the pair of heat storage alternating combustion burner devices 7 to generate a series of air flows. Since the flat flame f extends along the radiation wall Z along with the air flow, the radiation wall Z can be heated reliably and efficiently.
  • the radiation wall Z can be heated more uniformly and uniformly. Since the flame f formed between the furnace body element 5 and the processing material 2 is flat, the distance between the processing material 2 and the inner surface of the furnace body 1 a such as the ceiling surface 6 is narrow (in the figure, the height of the heating furnace 1 is high) And the heating furnace 1 can be miniaturized.
  • the curved path Y is formed in the air flow path 8 of the burner device 7 at the back of the curved surface S and directed in the direction of turning back with respect to the curved surface S.
  • the flame f can generate a swirling action so as to approach the radiation wall Z, and the heating action of the radiation wall Z by the flame f can be further improved.
  • the burner device 7 has the fuel injection portion 10 for injecting the fuel F into the air flow path 8 along the curved path Y. Therefore, while ensuring a smooth flow of the combustion air C, the fuel F and the combustion are carried out.
  • the merging with the air C can be smoothed, and a flame f having a high flow velocity can be blown out from the opening 9.
  • the curved surface S is turned back toward the curved path Y on the downstream side of the merging portion X where the fuel F from the fuel injection portion 10 and the combustion air C merge. Since the baffle portion 13 for stirring and mixing the fuel F and the combustion air C is formed around the reversing portion T, the mixing of the fuel F and the combustion air C can be enhanced, and high efficiency combustion is ensured. can do.
  • the combustion air C and fuel F flowing smoothly through the baffle portion 13 maintain the momentum of the air flow and can sufficiently exert the Coanda effect, and the radiation wall surface Z is appropriately heated to achieve sufficient radiation heat.
  • the treatment material 2 can be treated.
  • the furnace body element 5 in the figure, the furnace ceiling portion
  • the wall radiation type burner unit 4 including the burner device 7 into a unit, the furnace ceiling portion etc.
  • the heating furnace 1 can be easily configured by forming the furnace body 1a.
  • the furnace body element 5 shall comprise a furnace ceiling part, of course, you may comprise a furnace floor part and a furnace wall part.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Combustion Of Fluid Fuel (AREA)
  • Gas Burners (AREA)
  • Air Supply (AREA)
PCT/JP2012/073140 2011-09-28 2012-09-11 壁面輻射式バーナーユニット WO2013047183A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201280041924.5A CN103765101B (zh) 2011-09-28 2012-09-11 壁面辐射式燃烧器单元
KR1020147000986A KR101959098B1 (ko) 2011-09-28 2012-09-11 벽면 복사식 버너 유니트

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011213456A JP5774431B2 (ja) 2011-09-28 2011-09-28 壁面輻射式バーナーユニット
JP2011-213456 2011-09-28

Publications (1)

Publication Number Publication Date
WO2013047183A1 true WO2013047183A1 (ja) 2013-04-04

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ID=47995218

Family Applications (1)

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PCT/JP2012/073140 WO2013047183A1 (ja) 2011-09-28 2012-09-11 壁面輻射式バーナーユニット

Country Status (5)

Country Link
JP (1) JP5774431B2 (zh)
KR (1) KR101959098B1 (zh)
CN (1) CN103765101B (zh)
TW (1) TWI548840B (zh)
WO (1) WO2013047183A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11885489B2 (en) 2016-07-08 2024-01-30 Nova Chemicals (International) S.A. Metallic burner tiles

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5878420B2 (ja) * 2012-04-19 2016-03-08 中外炉工業株式会社 壁面輻射式バーナー
FR3066508B1 (fr) * 2017-05-22 2021-02-12 Matisa Materiel Ind Sa Procede de pose d’un rail de voie ferree, comportant un chauffage du rail, et train de travaux pour la mise en œuvre du procede de pose
JP6727729B2 (ja) * 2017-07-07 2020-07-22 中外炉工業株式会社 熱処理炉
EP3598000B1 (en) * 2018-07-20 2021-04-28 Solaronics Gas fired radiant emitter comprising a radiant screen
CN109487053B (zh) * 2019-01-10 2024-05-07 韩天臣 用于刀剑的淬火炉

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Publication number Priority date Publication date Assignee Title
US4146357A (en) * 1975-07-30 1979-03-27 Hotwork International Limited Fuel fired burners
JPS5953620A (ja) * 1982-09-21 1984-03-28 Sumitomo Metal Ind Ltd 加熱炉
JPH01117430U (zh) * 1988-02-03 1989-08-08
JPH05118764A (ja) * 1991-10-31 1993-05-14 Nippon Furnace Kogyo Kaisha Ltd 鉄鋼加熱炉
JPH08178230A (ja) * 1994-09-07 1996-07-12 L'air Liquide フレームを広げる装置並びにこの装置を使用した炉
JPH08159420A (ja) * 1994-12-03 1996-06-21 Osaka Gas Co Ltd 平面炎ガスバーナ
JPH09101008A (ja) * 1995-10-03 1997-04-15 Babcock Hitachi Kk 輻射バーナ
JP2000046319A (ja) * 1998-07-28 2000-02-18 Daido Steel Co Ltd 蓄熱式バーナをそなえた炉の炉温制御方法
JP2000249312A (ja) * 1999-02-25 2000-09-12 Stein Heurtey フラット火炎バーナー
US20090181333A1 (en) * 2008-01-11 2009-07-16 Feese James J Three Stage Low NOx Burner System With Controlled Stage Air Separation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11885489B2 (en) 2016-07-08 2024-01-30 Nova Chemicals (International) S.A. Metallic burner tiles

Also Published As

Publication number Publication date
JP2013072612A (ja) 2013-04-22
TW201323787A (zh) 2013-06-16
CN103765101A (zh) 2014-04-30
CN103765101B (zh) 2016-03-09
KR101959098B1 (ko) 2019-03-15
TWI548840B (zh) 2016-09-11
KR20140072011A (ko) 2014-06-12
JP5774431B2 (ja) 2015-09-09

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