JP3960444B2 - Thermal storage combustion device - Google Patents

Thermal storage combustion device Download PDF

Info

Publication number
JP3960444B2
JP3960444B2 JP24392598A JP24392598A JP3960444B2 JP 3960444 B2 JP3960444 B2 JP 3960444B2 JP 24392598 A JP24392598 A JP 24392598A JP 24392598 A JP24392598 A JP 24392598A JP 3960444 B2 JP3960444 B2 JP 3960444B2
Authority
JP
Japan
Prior art keywords
heat storage
fuel
nozzle
air
injection nozzle
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.)
Expired - Fee Related
Application number
JP24392598A
Other languages
Japanese (ja)
Other versions
JP2000074363A (en
Inventor
孝好 栗原
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.)
Tokyo Gas Co Ltd
Original Assignee
Tokyo Gas Co Ltd
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 Tokyo Gas Co Ltd filed Critical Tokyo Gas Co Ltd
Priority to JP24392598A priority Critical patent/JP3960444B2/en
Publication of JP2000074363A publication Critical patent/JP2000074363A/en
Application granted granted Critical
Publication of JP3960444B2 publication Critical patent/JP3960444B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • 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

Landscapes

  • Gas Burners (AREA)
  • Air Supply (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、蓄熱燃焼装置に関するものである。
【０００２】
【従来の技術】
従来、例えば、一対の蓄熱燃焼装置を炉体に取着けて、一方の蓄熱燃焼装置が燃焼している時は、他方の蓄熱燃焼装置を通して排気させ、この排気の際に、内蔵した蓄熱体を加熱し、次に、前記他方の燃焼装置が燃焼している時は、前記加熱された蓄熱体に燃焼用空気を通過させて、これを昇温して燃焼に供させる。この燃焼を交互に、例えば、６０秒毎に繰り返すことにより、炉体内の被熱物を加熱するものである。
【０００３】
【発明が解決しようとする課題】
前記した従来の場合、形成される火炎形状が考慮されていないので、蓄熱燃焼という非常に効率の優れた燃焼装置にもかかわらず、燃焼空間に制限があるような加熱炉には適用できず、また、窒素酸化物の発生について課題があった。本発明は、蓄熱燃焼装置という優れた装置に汎用性を持たせ、同時に燃焼に際して、窒素酸化物の発生の抑制を図かることを目的とするものである。
【０００４】
【課題を解決するための手段】
上述した課題を解決するために、本発明では、まず、燃料噴出ノズルを挟んで一対の長孔状空気噴出ノズルを対向して設けて、前記燃料噴出ノズルを、前記長孔状空気噴出ノズルの包絡範囲内に形成し、前記燃料噴出ノズルは、化学量論比３０％以下の酸化剤を導入する酸化剤導入外筒とその内部に設けた燃料導入内筒の混合部に連通させると共に、前記長孔状空気噴出ノズルは、前記酸化剤導入外筒の外周に設けた蓄熱室に連通させた蓄熱燃焼装置を提供するものである。
【０００５】
また、上述した課題を解決するために、本発明では、燃料噴出ノズルを挟んで一対の長孔状空気噴出ノズルを対向して設けて、前記燃料噴出ノズルを、前記長孔状空気噴出ノズルの包絡範囲内に形成し、前記燃料噴出ノズルは、燃料導入筒に連通させると共に、前記長孔状空気噴出ノズルは、前記燃料導入筒の外周に設けた蓄熱室に連通させた蓄熱燃焼装置を提供するものである。
【０００６】
また、上述した課題を解決するために、本発明では、燃料噴出ノズルを挟んで一対の長孔状空気噴出ノズルを対向して設けて、前記燃料噴出ノズルを、前記長孔状空気噴出ノズルの包絡範囲内に形成し、前記燃料噴出ノズルは、化学量論比３０％以下の酸化剤を導入する酸化剤導入外筒とその内部に設けた燃料導入内筒の混合部に連通させ、前記酸化剤導入外筒とその内部に設けた燃料導入内筒は、下部蓄熱室に蓄熱体を設け、その下部蓄熱室と連通させた上部蓄熱室を貫通して設けると共に、前記長孔状空気噴出ノズルは、前記上部蓄熱室に連通させた蓄熱燃焼装置を提供するものである。
【０００７】
また、上述した課題を解決するために、本発明では、燃料噴出ノズルは、複数個に構成した蓄熱燃焼装置を提供するものである。
【０００８】
また、上述した課題を解決するために、本発明では、長孔状空気噴出ノズルの噴出部は、長円孔に構成したした蓄熱燃焼装置を提供するものである。
【０００９】
また、上述した課題を解決するために、本発明では、長孔状空気噴出ノズルの噴出部は、円弧状スリットに構成した蓄熱燃焼装置を提供するものである。
【００１０】
また、上述した課題を解決するために、本発明では、長孔状空気噴出ノズルは、複数個に構成した蓄熱燃焼装置を提供するものである。
【００１１】
また、上述した課題を解決するために、本発明では、長孔状空気噴出ノズルは、内側に向けて角度を持たせた蓄熱燃焼装置を提供する。
【００１２】
【発明の実施の形態】
次に本発明の実施の形態を図を参照して説明する。図１は、燃料噴出ノズルであって、この燃料噴出ノズル１を挟んで一対の長孔状空気噴出ノズル２を対向して設ける。前記燃料噴出ノズル１は、前記長孔状空気噴出ノズル１の破線で示す包絡範囲内８に形成される。そして、燃料噴出ノズル１は、化学量論比３０％以下の酸化剤を導入する酸化剤導入外筒３とその内部に設けた燃料導入内筒４の混合部５に連通する構成とする。更に、前記長孔状空気噴出ノズル２は、前記酸化剤導入外筒３に設けた蓄熱室６に連通する構成である。図２に於いて、燃料噴出ノズル１は、燃料導入筒７に直接連通させると共に、長孔状空気噴出ノズル２は、前記燃料導入筒７の外周に設けた蓄熱室６に連通させる構成とする。燃料噴出ノズル１と長孔状空気噴出ノズル２との構成関係は、図１の実施例の場合と同様である。図３は、燃料噴出ノズル１は、化学量論比３０％以下の酸化剤を導入する酸化剤導入外筒３とその内部に設けた燃料導入内筒４の混合部５に連通させ、酸化剤導入外筒３とその内部に設けた燃料導入内筒４は、下部蓄熱室１１に蓄熱体９を設け、それと連通した上部蓄熱室１０を貫通して設けると共に、前記空気噴出ノズル２は、前記下部蓄熱室１１に連通した上部蓄熱室１０に連通させた構成である。燃料噴出ノズル１と長孔状空気噴出ノズル２との構成関係は、図１の実施例の場合と同様である。図４ないし図６は、燃料噴出ノズル１と長孔状空気噴出ノズル２との構成関係と、形状の他の形態を示す実施例図である。図中破線の内側は、包絡範囲内８を示す。燃料噴出ノズル１は、対向して設けられた一対の長孔状空気噴出ノズル２の包絡範囲内８であれば、複数でもよいし、図のように単数でもよい。また、空気噴出ノズル２は、燃料噴出ノズル１を包絡範囲内８に挟んだ長孔状の構成であれば、図示の通り、長孔状、長円状、円弧状でもよいし、又、小さな複数の空気孔から成るものであってもよい。図で示すように、例えば、前記長孔状空気噴出ノズル２の噴出角度を、内側に向けて構成してもよい。この構成の場合には、後述するような特別の作用効果を発揮する。前記長孔状空気噴出ノズル２は、平行に噴出するように構成してもよいことは、もちろんである。
【００１３】
以上の構成の蓄熱燃焼装置を炉体に一対設置する。そして、燃料導入内筒４に燃料を導入し、酸化剤導入外筒３に化学量論比３０％以下の酸化剤、例えば、空気を導入すると、混合部５において両者は混合を開始しながら、燃料噴出ノズル１から炉内（図示せず）に噴出する。一方、給気部１２から蓄熱室６内に導入された空気は、蓄熱室６を経て、そこで加温されて空気噴出ノズル２から炉内に噴出する。こうして燃料と酸化剤の混合が炉内において良好に行われる。燃料噴出ノズル１と空気噴出ノズル２は、前記した形状と相互関係、即ち、燃料噴出ノズル１は、対向して設けられた一対の長孔状空気噴出ノズル２の包絡範囲内に挟まれた構成であるので、燃料が両側の長孔状空気噴出ノズル２から噴出する帯状の空気によって挟まれて、その方向への燃料の広がりが抑制される状態になり、その状態で燃焼が進行されるので、短炎で扁平な良好火炎が形成される。また、この時、酸化剤導入外筒３から供給される酸化剤は化学量論比３０％以下なので、窒素酸化物の生成を大幅に助長することなく、且つ連続着火による保炎性能を向上させることができ、燃焼の安定が一層向上する。燃料噴出ノズル１は、複数個に分割構成してもよく、また、燃料噴出ノズル１の噴出面の形状は、実施例図で例示するような形状で同様な作用効果が達成できる。また、図で示すように、その噴出角度を、内側に向けて構成する場合には、左右の長孔状空気噴出ノズル２の噴出形状は長孔状である故に有効に機能する。即ち、この場合には、燃料と空気は早目に混合して燃焼が促進さるが、燃料は、空気によって良好に包み込まれ、且つ拡大を抑制されながら、混合燃焼が促進されるので、より短炎で良好な安定した扁平火炎が形成される。また、長孔状空気噴出ノズル２を円形状に構成することが考えられるが、この場合には、燃料噴出ノズル１及び長孔状空気噴出ノズル２は、しっかりと同一面上に噴出する構成としなければ、扁平火炎は形成されず、しかも、角度を持たせた場合には、その角度を急角度に構成すると、同様に扁平火炎が形成されないので、火炎の長さに対する自由度は、極めて低い。しかしながら、本発明は、前記した構成であるので、燃料噴出ノズル１及び空気噴出ノズル２は、同一面上に構成しなくても、良好な扁平火炎が形成されと共に、図３で示すようなかなりの角度を形成しても、前記詳述した通り、良好な火炎が形成されるので、火炎長に対する自由度は非常に大きくなり、その利点は頗る大である。このような蓄熱燃焼装置を燃焼空間に制限があるような各種加熱炉に適用すると、最適な加熱炉を提供することができる。即ち、良好な扁平火炎が炉内のインナーカバーや鍋に直接当たることが少なくなり、炉自体の寿命を大幅に改善することができる上、熱が有効に消費されるため、熱効率の向上に貢献できる。蓄熱燃焼装置は、一方が燃焼している時は、その排気は、他方の蓄熱燃焼装置の燃料噴出ノズル１と長孔状空気噴出ノズル２を介して排気され、蓄熱室６の蓄熱体を加熱して主として給気部１２から排気される。以上燃焼を、例えば、６０秒毎に繰り返して実行する。図２の実施例の場合には、化学量論比３０％以下の酸化剤を導入しない例であり、図３の場合には、蓄熱室を、上部蓄熱室１０と下部蓄熱室１１に分けて構成した例である。この場合には、蓄熱室が大きく採れ蓄熱効果が一層向上する。
【００１４】
以上のように、燃料と酸化剤は、その噴出エネルギーにより、周囲の炉内ガスを吸引混合して酸素分圧が低下、二つの流体（燃料と酸化剤）は、ある離隔距離で、ゆるやかに混合しながら、燃焼が進行する。即ち、効果的な炉内ガスの伴流混合燃焼により、局部的な高温部が形成されず、均一な低温燃焼を実行することができる。このような燃焼により、窒素酸化物の発生が効果的に抑制することができる。その上、形成される良好な扁平火炎は、前記した通り、短く、しかも、扁平であるので、燃焼空間に制限のある各種加熱炉には、格段の効果を発揮する。即ち、炉体の壁に火炎が直接衝突しないので、炉体の過熱を防止することができ、炉自体の寿命を大幅に改善することができる。このことは、同時に、熱の無駄が省けるので、経済的にも、非常に貢献することができる
【００１５】
【発明の効果】
本発明は以上のとおりであるので、次のような効果がある。
即ち、蓄熱燃焼装置のように、予熱された空気を燃焼に用いる場合には、通常、ＮＯｘ排出レベルは高くなる傾向にあるが、本発明によれば、前記した通りの局部過熱の防止により、ＮＯｘ排出レベルを低レベルに抑制することができると共に、加熱炉に適用した場合、扁平で短炎の良好な火炎が形成できるため、炉壁、炉内の鍋等を過熱することがなく、炉体の寿命を大幅に向上させることができ、このことは、また、熱の損失を大幅に除去することができるので、省エネ効果が達成できる。
【図面の簡単な説明】
【図１】 本発明に係る燃焼装置の断面的説明図である。
【図２】 本発明に係る他の燃焼装置の断面的説明図である。
【図３】 本発明に係る他の燃焼装置の断面的説明図である。
【図４】 本発明に係る燃焼装置の要部説明図である。
【図５】 本発明に係る燃焼装置の要部説明図である。
【図６】 本発明に係る燃焼装置の要部説明図である。
【符号の説明】
１ 燃料噴出ノズル
２ 長孔状空気噴出ノズル
３ 酸化剤導入外筒
４ 燃料導入筒
５ 混合部
６ 蓄熱室
７ 燃料導入筒
８ 包絡範囲内
９ 蓄熱体
１０ 上部蓄熱室
１１ 下部蓄熱室
１２ 給気部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat storage combustion apparatus.
[0002]
[Prior art]
Conventionally, for example, when a pair of heat storage combustion devices are attached to a furnace body, and one of the heat storage combustion devices is burning, the exhaust gas is exhausted through the other heat storage combustion device. Then, when the other combustion device is burning, combustion air is passed through the heated heat accumulator, and the temperature is raised to be used for combustion. By repeating this combustion alternately, for example, every 60 seconds, the object to be heated in the furnace body is heated.
[0003]
[Problems to be solved by the invention]
In the conventional case described above, since the flame shape to be formed is not taken into consideration, it is not applicable to a heating furnace in which the combustion space is limited in spite of a very efficient combustion device called heat storage combustion, There was also a problem about the generation of nitrogen oxides. An object of the present invention is to provide an excellent apparatus called a heat storage combustion apparatus with versatility, and at the same time, to suppress generation of nitrogen oxides during combustion.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problem, in the present invention, first, a pair of long hole air injection nozzles are provided opposite to each other with the fuel injection nozzle interposed therebetween, and the fuel injection nozzle is connected to the long hole air injection nozzle. The fuel injection nozzle is formed in an envelope range, and communicates with an oxidant introduction outer cylinder for introducing an oxidant with a stoichiometric ratio of 30% or less and a mixing portion of a fuel introduction inner cylinder provided therein, and The long hole-like air ejection nozzle provides a heat storage combustion apparatus that communicates with a heat storage chamber provided on the outer periphery of the oxidant introduction outer cylinder.
[0005]
In order to solve the above-described problem, in the present invention, a pair of long hole air injection nozzles are provided opposite to each other with the fuel injection nozzle interposed therebetween, and the fuel injection nozzle is connected to the long hole air injection nozzle. Provided is a heat storage combustion device formed within an envelope range, wherein the fuel injection nozzle communicates with a fuel introduction cylinder, and the long hole air injection nozzle communicates with a heat accumulation chamber provided on an outer periphery of the fuel introduction cylinder To do.
[0006]
In order to solve the above-described problem, in the present invention, a pair of long hole air injection nozzles are provided opposite to each other with the fuel injection nozzle interposed therebetween, and the fuel injection nozzle is connected to the long hole air injection nozzle. The fuel injection nozzle is formed within an envelope range, and communicates with a mixing portion of an oxidant introduction outer cylinder for introducing an oxidant having a stoichiometric ratio of 30% or less and a fuel introduction inner cylinder provided in the oxidant introduction cylinder. The agent introduction outer cylinder and the fuel introduction inner cylinder provided therein are provided with a heat storage body in the lower heat storage chamber, provided through the upper heat storage chamber communicating with the lower heat storage chamber, and the long hole air jet nozzle Provides a heat storage combustion apparatus in communication with the upper heat storage chamber.
[0007]
In order to solve the above-described problem, the present invention provides a heat storage combustion apparatus in which a plurality of fuel ejection nozzles are configured.
[0008]
In order to solve the above-described problem, the present invention provides a heat storage combustion apparatus in which the ejection portion of the long hole air ejection nozzle is configured as an oblong hole.
[0009]
In order to solve the above-described problems, the present invention provides a heat storage combustion apparatus in which the ejection portion of the long hole-like air ejection nozzle is configured as an arc-shaped slit.
[0010]
In order to solve the above-described problems, in the present invention, the long hole air ejection nozzle provides a plurality of heat storage combustion apparatuses.
[0011]
In order to solve the above-described problem, the present invention provides a heat storage combustion apparatus in which the long hole-like air ejection nozzle has an angle toward the inside.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a fuel ejection nozzle, and a pair of long hole air ejection nozzles 2 are provided opposite to each other with the fuel ejection nozzle 1 interposed therebetween. The fuel injection nozzle 1, Ru is formed into an envelope range 8 indicated by the broken line in the long hole-shaped air ejection nozzle 1. The fuel injection nozzle 1 is configured to communicate with the mixing portion 5 of the oxidant introduction outer cylinder 3 for introducing an oxidant with a stoichiometric ratio of 30% or less and the fuel introduction inner cylinder 4 provided therein. Further, the long hole air ejection nozzle 2 is configured to communicate with a heat storage chamber 6 provided in the oxidant introduction outer cylinder 3. In FIG. 2, the fuel injection nozzle 1 is in direct communication with the fuel introduction cylinder 7, and the long hole air injection nozzle 2 is in communication with the heat storage chamber 6 provided on the outer periphery of the fuel introduction cylinder 7. . The structural relationship between the fuel injection nozzle 1 and the long hole air injection nozzle 2 is the same as in the embodiment of FIG. FIG. 3 shows that the fuel injection nozzle 1 communicates with an oxidant introduction outer cylinder 3 for introducing an oxidant with a stoichiometric ratio of 30% or less and a mixing portion 5 of a fuel introduction inner cylinder 4 provided in the oxidant introduction cylinder 3. The introduction outer cylinder 3 and the fuel introduction inner cylinder 4 provided in the inside thereof are provided with a heat storage body 9 in the lower heat storage chamber 11 and provided through the upper heat storage chamber 10 communicating therewith, and the air ejection nozzle 2 In this configuration, the lower heat storage chamber 11 communicates with the upper heat storage chamber 10. The structural relationship between the fuel injection nozzle 1 and the long hole air injection nozzle 2 is the same as in the embodiment of FIG. FIG. 4 to FIG. 6 are examples showing the structural relationship between the fuel injection nozzle 1 and the long hole air injection nozzle 2 and other forms of the shape. The inside of the broken line in the figure indicates the envelope range 8. There may be a plurality of fuel ejection nozzles 1 as long as they are within the envelope range 8 of the pair of long hole air ejection nozzles 2 provided facing each other , or a single one as shown in the figure. In addition, the air ejection nozzle 2 may have a long hole shape, an oval shape, or an arc shape as shown in the figure as long as the fuel injection nozzle 1 is sandwiched between the envelope range 8 and is small as shown in the figure. It may consist of a plurality of air holes. As shown in the figure, for example, the ejection angle of the long hole-like air ejection nozzle 2 may be configured to face inward. In the case of this configuration, a special effect as described later is exhibited. Of course, the long hole-like air ejection nozzle 2 may be configured to eject in parallel.
[0013]
A pair of heat storage combustion apparatuses having the above configuration is installed in the furnace body. Then, when fuel is introduced into the fuel introduction inner cylinder 4 and an oxidant having a stoichiometric ratio of 30% or less, for example, air, is introduced into the oxidant introduction outer cylinder 3, both start mixing in the mixing section 5, The fuel is ejected from the fuel ejection nozzle 1 into the furnace (not shown). On the other hand, the air introduced into the heat storage chamber 6 from the air supply unit 12 passes through the heat storage chamber 6, is heated there, and is ejected from the air ejection nozzle 2 into the furnace. In this way, the fuel and oxidant are well mixed in the furnace. The fuel ejection nozzle 1 and the air ejection nozzle 2 are interrelated with the above-described shape , that is, the fuel ejection nozzle 1 is sandwiched within the envelope range of a pair of long hole air ejection nozzles 2 provided facing each other. Therefore, the fuel is sandwiched by the belt-like air ejected from the long hole-like air ejection nozzles 2 on both sides, and the fuel spreads in that direction is suppressed, and the combustion proceeds in that state. A flat, good flame is formed with a short flame. At this time, since the oxidant supplied from the oxidant introduction outer cylinder 3 is 30% or less in stoichiometric ratio, the flame holding performance by continuous ignition is improved without greatly promoting the generation of nitrogen oxides. And the stability of combustion is further improved. The fuel ejection nozzle 1 may be divided into a plurality of parts, and the shape of the ejection surface of the fuel ejection nozzle 1 is the same as that illustrated in the embodiment, and similar effects can be achieved. Further, as shown in the figure, when the jet angle is configured inward, the jet shape of the left and right long hole-like air jet nozzles 2 functions effectively because it is a long hole. That is, in this case, the fuel and air are mixed early to promote combustion, but since the fuel is well encased by air and the expansion is suppressed while suppressing the expansion, the combustion is accelerated. A good and stable flat flame is formed by the flame. In addition, it is conceivable that the long hole-like air ejection nozzle 2 is formed in a circular shape. In this case, the fuel ejection nozzle 1 and the long hole-like air ejection nozzle 2 are configured to firmly eject on the same plane. Otherwise, a flat flame will not be formed, and if the angle is given, if the angle is configured to be steep, a flat flame will not be formed as well, so the degree of freedom with respect to the flame length is extremely low. . However, since the present invention has the above-described configuration, the fuel injection nozzle 1 and the air injection nozzle 2 can form a good flat flame even if they are not configured on the same plane, as shown in FIG. Even if this angle is formed, since a good flame is formed as described in detail above, the degree of freedom with respect to the flame length becomes very large, and the advantage is greatly increased. When such a heat storage combustion apparatus is applied to various heating furnaces having a limited combustion space, an optimum heating furnace can be provided. In other words, a good flat flame is less likely to directly hit the inner cover or pan in the furnace, which can greatly improve the life of the furnace itself and contribute to the improvement of thermal efficiency because heat is effectively consumed. it can. When one of the heat storage combustion devices is combusting, the exhaust is exhausted through the fuel injection nozzle 1 and the long hole air injection nozzle 2 of the other heat storage combustion device, and heats the heat storage body of the heat storage chamber 6. Thus, the air is mainly exhausted from the air supply unit 12. The combustion above, for example, repeatedly executes every 60 seconds. In the case of the embodiment of FIG. 2, an oxidizer having a stoichiometric ratio of 30% or less is not introduced. In the case of FIG. 3, the heat storage chamber is divided into an upper heat storage chamber 10 and a lower heat storage chamber 11. It is an example configured. In this case, a large heat storage chamber is taken and the heat storage effect is further improved.
[0014]
As described above, the fuel and oxidant are mixed with the surrounding furnace gas by sucking energy and the oxygen partial pressure is lowered, and the two fluids (fuel and oxidant) are gently separated at a certain separation distance. Combustion proceeds while mixing. That is, a local high temperature portion is not formed by effective wake gas mixing combustion in the furnace, and uniform low temperature combustion can be performed. By such combustion, generation of nitrogen oxides can be effectively suppressed. In addition, since the good flat flame formed is short and flat as described above, it has a remarkable effect in various heating furnaces with limited combustion space. That is, since the flame does not directly collide with the wall of the furnace body, overheating of the furnace body can be prevented, and the life of the furnace itself can be greatly improved. At the same time, waste of heat can be eliminated, so that it can contribute very economically.
【The invention's effect】
Since the present invention is as described above, the following effects are obtained.
That is, when using preheated air for combustion as in the case of a heat storage combustion device, the NOx emission level usually tends to be high, but according to the present invention, by preventing local overheating as described above, The NOx emission level can be suppressed to a low level, and when applied to a heating furnace, a flat and short flame can be formed, so that the furnace wall and the pot in the furnace are not overheated. The lifespan of the body can be greatly improved, and this can also greatly eliminate heat loss, so that an energy saving effect can be achieved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional explanatory view of a combustion apparatus according to the present invention.
FIG. 2 is a cross-sectional explanatory view of another combustion apparatus according to the present invention.
FIG. 3 is a cross-sectional explanatory view of another combustion apparatus according to the present invention.
FIG. 4 is an explanatory view of a main part of a combustion apparatus according to the present invention.
FIG. 5 is an explanatory view of a main part of a combustion apparatus according to the present invention.
FIG. 6 is an explanatory view of a main part of a combustion apparatus according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fuel injection nozzle 2 Long hole-shaped air injection nozzle 3 Oxidant introduction outer cylinder 4 Fuel introduction cylinder 5 Mixing part 6 Heat storage chamber 7 Fuel introduction cylinder 8 Within envelope range 9 Thermal storage body 10 Upper thermal storage chamber 11 Lower thermal storage chamber 12 Air supply section

Claims (8)

燃料噴出ノズルを挟んで一対の長孔状空気噴出ノズルを対向して設けて、前記燃料噴出ノズルを、前記空気噴出ノズルの包絡範囲内に形成し、前記燃料噴出ノズルは、化学量論比３０％以下の酸化剤を導入する酸化剤導入外筒とその内部に設けた燃料導入内筒の混合部に連通させると共に、前記空気噴出ノズルは、前記酸化剤導入外筒の外周に設けた蓄熱室に連通させたことを特徴とする蓄熱燃焼装置。 Provided to face a pair of elongated shape air ejection nozzles across the fuel injection nozzle, said fuel injection nozzles, formed in the envelope range of the air injection nozzle, the fuel injection nozzle, the stoichiometric ratio of 30 % Of the oxidant introduction outer cylinder that introduces less than or equal to the oxidant, and a fuel introduction inner cylinder provided in the oxidizer introduction outer cylinder, and the air ejection nozzle is provided in the outer periphery of the oxidant introduction outer cylinder. A heat storage combustion apparatus characterized in that it is communicated with the heat storage combustion apparatus. 燃料噴出ノズルを挟んで一対の長孔状空気噴出ノズルを対向して設けて、前記燃料噴出ノズルを、前記空気噴出ノズルの包絡範囲内に形成し、前記燃料噴出ノズルは、燃料導入筒に連通させると共に、前記空気噴出ノズルは、前記燃料導入筒の外周に設けた蓄熱室に連通させたことを特徴とする蓄熱燃焼装置。 Provided to face a pair of elongated shape air ejection nozzles across the fuel injection nozzle, communicating said fuel injection nozzles, formed in the envelope range of the air injection nozzle, the fuel injection nozzle, the fuel inlet tube And the air jet nozzle communicates with a heat storage chamber provided on an outer periphery of the fuel introduction cylinder. 燃料噴出ノズルを挟んで一対の長孔状空気噴出ノズルを対向して設けて、前記燃料噴出ノズルを、前記空気噴出ノズルの包絡範囲内に形成し、前記燃料噴出ノズルは、化学量論比３０％以下の酸化剤を導入する酸化剤導入外筒とその内部に設けた燃料導入内筒の混合部に連通させ、前記酸化剤入外筒とその内部に設けた燃料導入内筒は、下部蓄熱室に蓄熱体を設け、その下部蓄熱室と連通する上部蓄熱室を貫通して設けると共に、前記空気噴出ノズルは、前記上部蓄熱室に連通させたことを特徴とする蓄熱燃焼装置。 Provided to face a pair of elongated shape air ejection nozzles across the fuel injection nozzle, said fuel injection nozzles, formed in the envelope range of the air injection nozzle, the fuel injection nozzle, the stoichiometric ratio of 30 % Of the oxidant introduction outer cylinder for introducing less than or equal to the oxidant and the fuel introduction inner cylinder provided in the oxidant introduction outer cylinder communicated with the mixing section of the oxidant introduction outer cylinder and the fuel introduction inner cylinder provided therein. A heat storage combustion apparatus characterized in that a heat storage body is provided in a chamber, an upper heat storage chamber communicating with the lower heat storage chamber is provided therethrough, and the air ejection nozzle communicates with the upper heat storage chamber. 燃料噴出ノズルは、複数個に構成したことを特徴とする請求項１、２又は３記載の蓄熱燃焼装置。  The regenerative combustion apparatus according to claim 1, 2 or 3, wherein the fuel ejection nozzle is configured in plural. 長孔状空気噴出ノズルの噴出部は、長円孔に構成したしたことを特徴とする請求項１、２又は３記載の蓄熱燃焼装置。  The regenerative combustion apparatus according to claim 1, 2 or 3, wherein the ejection portion of the long hole air ejection nozzle is configured as an oblong hole. 長孔状空気剤噴出ノズルの噴出部は、円弧状スリットに構成したことを特徴とする請求項１、２又は３記載の蓄熱燃焼装置。  The regenerative combustion apparatus according to claim 1, 2 or 3, wherein the ejection part of the long hole-shaped air agent ejection nozzle is configured as an arc-shaped slit. 長孔状空気噴出ノズルは、複数個に構成したことを特徴とする請求項１、２又は３記載の蓄熱燃焼装置。  The regenerative combustion apparatus according to claim 1, 2, or 3, wherein a plurality of the long hole air ejection nozzles are configured. 長孔状空気噴出ノズルは、内側に向けて角度を持たせたことを特徴とする請求項１、２、３，５，６又は７記載の蓄熱燃焼装置。  The regenerative combustion apparatus according to claim 1, 2, 3, 5, 6 or 7, wherein the long hole-like air ejection nozzle has an angle toward the inside.
JP24392598A 1998-08-28 1998-08-28 Thermal storage combustion device Expired - Fee Related JP3960444B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24392598A JP3960444B2 (en) 1998-08-28 1998-08-28 Thermal storage combustion device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24392598A JP3960444B2 (en) 1998-08-28 1998-08-28 Thermal storage combustion device

Publications (2)

Publication Number Publication Date
JP2000074363A JP2000074363A (en) 2000-03-14
JP3960444B2 true JP3960444B2 (en) 2007-08-15

Family

ID=17111070

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24392598A Expired - Fee Related JP3960444B2 (en) 1998-08-28 1998-08-28 Thermal storage combustion device

Country Status (1)

Country Link
JP (1) JP3960444B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115111044B (en) * 2022-07-27 2024-02-27 同济大学 Flame jet ignition system and method for direct injection engine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS537843A (en) * 1976-07-10 1978-01-24 Kawasaki Steel Corp Combustion method of gas fuel in industrial furnace and combustion burner
JPS6055829U (en) * 1983-09-20 1985-04-19 新日本製鐵株式会社 Burner for radiant tube heating device
JPH0774696B2 (en) * 1992-11-16 1995-08-09 中外炉工業株式会社 Combustion control method for regenerative burner system
JP2571556Y2 (en) * 1992-11-30 1998-05-18 中外炉工業株式会社 Heat storage regeneration burner
JPH0774695B2 (en) * 1993-03-05 1995-08-09 株式会社オツトー Heating device using a regenerative burner
JPH07233920A (en) * 1994-02-23 1995-09-05 Chugai Ro Co Ltd Burning method for oxygen burner
JPH08121712A (en) * 1994-10-19 1996-05-17 Tokyo Gas Co Ltd Method and device for regenerative combustion
JPH08128603A (en) * 1994-09-07 1996-05-21 Osaka Gas Co Ltd Low nox gas burner
CA2181292C (en) * 1995-07-17 2008-07-15 Louis C. Philippe Combustion process and apparatus therefor containing separate injection of fuel and oxidant streams
JP2927409B2 (en) * 1996-12-27 1999-07-28 東京瓦斯株式会社 Regenerative burner

Also Published As

Publication number Publication date
JP2000074363A (en) 2000-03-14

Similar Documents

Publication Publication Date Title
US5934073A (en) Auxiliary heating for motor vehicles with internal combustion engines
KR19990013605A (en) Combustion device
JP3960444B2 (en) Thermal storage combustion device
CN116291810B (en) Hot patching device and tail gas aftertreatment ware
JPH064171Y2 (en) Radiant chives
JP4165993B2 (en) Premixed heat storage type alternating combustion device
JP4172903B2 (en) Alternating combustion type heat storage type radiant tube burner
JP3081343B2 (en) Low NOx burner
KR200281040Y1 (en) Ignition apparatus of annealing furnace with improved combustion efficiency
JPS62202919A (en) Thin type high load burner
JP3305506B2 (en) Thermal storage combustion device
JP2004077012A (en) Radiant tube type heating device
JP3858481B2 (en) Catalytic combustor
JP2956229B2 (en) Combustion equipment
JP3296523B2 (en) Heating device
KR20030052891A (en) A low NOx regenerative radiant tube burner equipped with multiple fuel nozzles
JP2000039116A (en) LOW-NOx COMBUSTOR FORMING FLAT FLAME, ITS METHOD, AND INDIRECTLY HEATING FURNACE AND CONTINUOUS THIN PLATE HEAT-TREATING FURNACE USING THE SAME
JP3807697B2 (en) Alternating combustion heat storage type radiant tube burner system
JPH09166317A (en) Adjusting structure of air flow rate in regenerative burner
KR20030018188A (en) A low Nox regenerative radiant tube burner having two fuel nozzels
KR900011249Y1 (en) Cooking-vessel for cooking food in steam
KR200223860Y1 (en) Combustion Communication for Radiant Tube Burners
JPH11190515A (en) Regenerative combustion apparatus and radiant tube combustion apparatus using the same
JPH04298623A (en) Filter regeneration device for internal combustion engine
JP3793609B2 (en) Combustion device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050128

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20061228

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070119

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070316

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070510

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070510

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110525

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110525

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120525

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130525

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140525

Year of fee payment: 7

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees