JP2807165B2 - Oxygen burner - Google Patents
Oxygen burnerInfo
- Publication number
- JP2807165B2 JP2807165B2 JP1677094A JP1677094A JP2807165B2 JP 2807165 B2 JP2807165 B2 JP 2807165B2 JP 1677094 A JP1677094 A JP 1677094A JP 1677094 A JP1677094 A JP 1677094A JP 2807165 B2 JP2807165 B2 JP 2807165B2
- Authority
- JP
- Japan
- Prior art keywords
- oxygen
- flow path
- fuel gas
- oxygen burner
- burner
- 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
Links
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- Gas Burners (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、物体を加熱、溶解する
のに用いる酸素バーナに関し、特にコークス炉、転炉、
脱ガス槽等の内壁損傷部に粉状の耐火物を溶融又は半溶
融状態で吹付け可能な、コンパクトで且つ高効率の酸素
バーナに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oxygen burner for heating and melting an object, and more particularly, to a coke oven, a converter,
The present invention relates to a compact and high-efficiency oxygen burner capable of spraying a powdery refractory in a molten or semi-molten state to an inner wall damaged portion such as a degassing tank.
【0002】[0002]
【従来の技術】コークス炉、転炉、脱ガス槽等製鉄プラ
ントで使用されている工業窯炉の内壁耐火物は、それら
炉の使用期間中に損耗、劣化するが、炉寿命延長、耐火
物原単位低減のため定期的に一部の損耗部分、劣化部分
を稼動期間の中間段階で粉状耐火物を溶射して補修され
ている。この溶射補修を行うには酸素バーナが必要であ
り、一般に、図5に示すような酸素バーナが利用されて
いる。それは、燃料ガス(LNG又はLPG等)を別途
供給した酸素含有ガスで燃焼させ、補修部分に付着した
スラグ、地金等を溶融除去後、LNG又はLPGと同一
流路内を通して搬送した粉状耐火物を、その燃焼熱によ
り溶融又は半溶融状態とし、上記炉壁耐火物の損耗部に
吹付けて融着させる方式をとっている。さらに詳しく図
5の酸素バーナ3について説明すると、まず燃料ガスと
酸素を供給して補修部分に付着したスラグ、地金等を溶
融除去し、引き続き耐火物粉末(一部金属粉末を含む)
2がホッパ1から燃料ガス11をキャリアガスとして送
り出され、酸素バーナ3に供給される。そして、その酸
素バーナ3には酸素含有ガス12が別ルートで供給さ
れ、バーナノズル部(図示せず)において燃料ガス11
と酸素含有ガス12とが混合され、火炎4を形成する。
その火炎4の高いエネルギーは耐火物粉末2を溶融し、
該溶融耐火物が上記炉壁耐火物の損耗部5に吹付け、付
着される。この酸素バーナ3の側断面を図4に示すが、
ノズル中央部より燃料ガス、ノズル外周部より酸素が供
給される構造をとっており、酸素は燃料ガスとの混合を
よくするため、やや内向きに吐出されるようその噴出孔
の角度θが決められている。2. Description of the Related Art Refractories of the inner walls of industrial kilns used in steelmaking plants such as coke ovens, converters, and degassing tanks are worn and deteriorated during use of the furnaces. In order to reduce the unit consumption, part of the worn and degraded parts is regularly repaired by thermal spraying of powdered refractories in the middle stage of the operation period. An oxygen burner is required to perform the thermal spray repair, and an oxygen burner as shown in FIG. 5 is generally used. It consists of burning a fuel gas (such as LNG or LPG) with a separately supplied oxygen-containing gas to melt and remove slag, metal, etc. attached to the repaired part, and then transporting the powdered refractory through the same flow path as LNG or LPG. A method is adopted in which the material is melted or semi-molten by the heat of combustion, and is sprayed to the worn portion of the furnace wall refractory to be fused. More specifically, the oxygen burner 3 shown in FIG. 5 will be described. First, fuel gas and oxygen are supplied to melt and remove slag, metal, and the like attached to the repaired portion, and then refractory powder (including some metal powder)
2 is supplied from the hopper 1 using the fuel gas 11 as a carrier gas and supplied to the oxygen burner 3. Then, the oxygen-containing gas 12 is supplied to the oxygen burner 3 by another route, and the fuel gas 11 is supplied to a burner nozzle (not shown).
And the oxygen-containing gas 12 are mixed to form the flame 4.
The high energy of the flame 4 melts the refractory powder 2,
The molten refractory is sprayed and attached to the wear portion 5 of the furnace wall refractory. FIG. 4 shows a side cross section of the oxygen burner 3,
The structure is such that fuel gas is supplied from the center of the nozzle and oxygen is supplied from the outer periphery of the nozzle, and the angle θ of the ejection hole is determined so that oxygen is discharged slightly inward to improve mixing with the fuel gas. Have been.
【0003】ところで、上記のような酸素バーナを非常
に狭い部分に挿入しなければならない、脱ガス浸漬管、
コークス炉炉壁等の補修に関しては、(1)火炎長さが
制限され、それを約200〜300mmと非常に短くし
なければならないこと、(2)吹付ける耐火物粉末のレ
ンガ面への衝突速度を小とし、吹付け材のリバウンドロ
スを低減させる都合があるため、火炎幅を広くしなけれ
ばならないこと等、使用する酸素バーナには厳しい要件
が課せられる。By the way, a degassing immersion pipe, in which an oxygen burner as described above must be inserted into a very narrow part,
Regarding repair of coke oven walls, etc., (1) the flame length is limited and it must be very short, about 200 to 300 mm; (2) collision of the refractory powder to be sprayed on the brick surface Due to the advantages of reducing the speed and reducing the rebound loss of the spray material, strict requirements are imposed on the oxygen burner used, such as the need to increase the flame width.
【0004】[0004]
【発明が解決しようとする課題】しかしながら、上記し
た公知の酸素バーナで火炎長さを短くするには、酸素を
外から内に向けて吐出させる孔の角度θを大きくすれば
よいが、それでは火点が安定せず、また火炎が安定する
適正なθを選定した場合には、その火炎が長くなってし
まう(300mm以上)という欠点があった。さらに、
燃料ガス流路の外側から内に向けて酸素を供給する場
合、どうしても細長い噴流型の火炎が形成されて、吹付
け材の炉壁への衝突速度が大きくなり、吹付け材のリバ
ウンドロスが大きいという欠点もあり、上記酸素バーナ
は、広い場所での使用に適しても、狭い所では、不都合
であった。However, in order to shorten the flame length with the above-described known oxygen burner, it is necessary to increase the angle θ of the hole for discharging oxygen from the outside to the inside. If the point is not stable and an appropriate θ that stabilizes the flame is selected, there is a drawback that the flame becomes longer (300 mm or more). further,
When supplying oxygen from the outside to the inside of the fuel gas flow path, an elongated jet-type flame is inevitably formed, the collision speed of the spray material against the furnace wall increases, and the rebound loss of the spray material is large The oxygen burner is suitable for use in a wide place, but is inconvenient in a narrow place.
【0005】そこで、本発明は、かかる事情を鑑み、火
炎長さが短く、且つ高温で幅の広い火炎を発生できる酸
素バーナの提供を目的としている。In view of such circumstances, an object of the present invention is to provide an oxygen burner that has a short flame length and can generate a wide flame at a high temperature.
【0006】[0006]
【課題を解決するための手段】発明者は、上記目的を達
成するため、鋭意実験、研究を重ね、その成果として本
発明を完成させた。すなわち、本発明は、酸素含有ガス
を供給する中心流路及び該中心流路の周囲に設けられ且
つ先端部が後退した燃料ガスの供給流路からなる先端凸
型のバーナノズル本体と、上記燃料ガス供給流路の先端
部外周側に配設した少なくとも中心流路先端まで延出し
た筒状バーナタイルとを備え、前記中心流路の先端は閉
鎖され、円周方向に複数個の開口を設けたことを特徴と
する酸素バーナである。また、本発明は、上記中心流路
の開口を燃料ガスの供給流路軸に対し45〜90度の角
度で設けたことを特徴とする請求項1記載の酸素バーナ
であることが好ましく、また、上記開口を設けた中心流
路の先端部分が、取外し自在のキャップであることを特
徴とする請求項2記載の酸素バーナでもある。さらに、
実用に際して、本発明は、燃料ガス中に耐火物粉末及び
/又は金属粉末を混合させる混合手段を備えたことを特
徴とする請求項1、2、3のいずれか1つに記載の酸素
バーナである。Means for Solving the Problems In order to achieve the above object, the inventor has conducted extensive experiments and researches, and completed the present invention as a result. That is, the present invention provides a burner nozzle main body having a convex end provided with a central flow path for supplying an oxygen-containing gas, and a fuel gas supply flow path provided around the central flow path and having a retreated distal end. A cylindrical burner tile extending to at least the center flow channel tip disposed on the tip end outer peripheral side of the supply flow channel, wherein the center flow channel tip is closed and a plurality of openings are provided in the circumferential direction. An oxygen burner characterized in that: The present invention is preferably the oxygen burner according to claim 1, wherein the opening of the central flow path is provided at an angle of 45 to 90 degrees with respect to the fuel gas supply flow path axis. 3. The oxygen burner according to claim 2, wherein a tip portion of the center flow path provided with the opening is a detachable cap. further,
In practical use, the present invention provides an oxygen burner according to any one of claims 1, 2, and 3, further comprising mixing means for mixing refractory powder and / or metal powder in fuel gas. is there.
【0007】[0007]
【作用】本発明では、酸素バーナを、酸素含有ガスを供
給する中心流路及び該中心流路の周囲に設けられ且つ先
端部が後退した燃料ガスの供給流路からなる先端凸型の
バーナノズル本体と、上記燃料ガス供給流路の先端部外
周側に配設した少なくとも中心流路先端まで延出した筒
状バーナタイルとを備え、前記中心流路の先端は閉鎖さ
れ、円周方向に複数個の開口を設けるようにしたので、
火炎長さが短く、且つ高温で幅の広い火炎を得ることが
できる。また、上記中心流路の開口を燃料ガスの供給流
路軸に対し45〜90度の角度で設け、また上記中心流
路の先端部を複数個の上記開口を含むキャップとするよ
うにもしたので、キャップの交換だけで簡単に火炎の長
さや幅を変更できるようになる。さらに、本発明では、
燃料ガス中に耐火物粉末及び金属粉末を混合させる混合
手段を設けるようにしたので、作業場所の狭い所での物
体の加熱、溶解だけでなく、容易に耐火物の吹付け補修
ができるようになる。以下、本発明の詳細を図1を用い
て説明する。According to the present invention, an oxygen burner is provided with a burner nozzle main body having a convex end provided with a central flow path for supplying an oxygen-containing gas, and a fuel gas supply flow path provided around the central flow path and having a retreated tip. And a tubular burner tile extending to at least the center flow channel tip provided on the outer peripheral side of the tip portion of the fuel gas supply flow channel, the tip of the center flow channel being closed, and a plurality of circumferentially extending circumferential burners. Since the opening of the
A flame having a short flame length and a wide flame at a high temperature can be obtained. Further, the opening of the central flow path is provided at an angle of 45 to 90 degrees with respect to the fuel gas supply flow path axis, and the tip of the central flow path is a cap including a plurality of the openings. Therefore, the length and width of the flame can be easily changed simply by replacing the cap. Further, in the present invention,
Mixing means for mixing the refractory powder and the metal powder in the fuel gas is provided so that not only heating and melting of objects in a narrow place of work, but also easy repair of refractory spraying is possible. Become. Hereinafter, the present invention will be described in detail with reference to FIG.
【0008】まず、本発明に係る酸素バーナ3は、中央
部に単数の酸素含有ガス12を供給する中心流路6と、
該中心流路の周囲に配設され先端が該中心流路のそれよ
り後退した複数本の燃料ガス供給流路7とで形成したバ
ーナノズル本体を基体とする。このバーナノズル本体
は、セラミックや耐熱合金材による一体成形品でも、複
数本の管体による組立品であっても良い。そして、燃料
ガス11の供給流路7より突出した酸素含有ガス12を
供給する中心流路6の先端部分は、端部は閉鎖されてい
るが、酸素含有ガスが円周方向に噴出するように、複数
個の開口8が設けられている。なお、この先端部分は、
取外しができるように例えばネジ接合部を有するキャッ
プ10で形成しても良い。さらに、燃料ガス11の供給
流路7の先端外周部分には筒状のバーナタイル9を設け
てあるが、該バーナタイル9は、少くなくとも上記中心
流路6の端部と同等位置より前方まで届くような長さを
有している。First, an oxygen burner 3 according to the present invention comprises a central flow path 6 for supplying a single oxygen-containing gas 12 to a central portion,
The base body is a burner nozzle main body formed by a plurality of fuel gas supply passages 7 disposed around the center flow passage and having a tip retreated from that of the center flow passage. The burner nozzle body may be an integrally molded product made of ceramic or heat-resistant alloy material, or may be an assembled product made up of a plurality of pipes. The end of the center channel 6 for supplying the oxygen-containing gas 12 projecting from the supply channel 7 for the fuel gas 11 is closed, but the oxygen-containing gas is ejected in the circumferential direction. , A plurality of openings 8 are provided. In addition, this tip part
It may be formed, for example, by a cap 10 having a screw joint so that it can be removed. Further, a cylindrical burner tile 9 is provided on the outer peripheral portion of the leading end of the supply passage 7 for the fuel gas 11, and the burner tile 9 is located at least forward of a position equivalent to the end of the central passage 6. It has a length that can be reached.
【0009】従って、本発明に係る酸素バーナ3では、
上記開口8より吐出した酸素含有ガス12は、バーナタ
イル9に衝突した際に、燃料ガス供給流路7から吐出さ
れる燃料ガス11と効率よく混合し、円周方向で均一に
混合が促進するため、短い火炎が形成される。それ故、
この酸素バーナ3は所謂ショートフレームを必要とする
場所での物体の加熱、溶解に非常に有用であるばかり
か、燃料ガス11に耐火物粉末2(金属粉末を含む)を
混合すれば、狭い場所での耐火物溶射補修におおいに利
用できるのである。なお、燃料ガス11に耐火物粉末2
等の混合は、ホッパ1から燃料ガス11の供給流路7の
先端開口までの間で行えば良く、その手段には公知のも
のが利用できるので、図示は省略してある。Therefore, in the oxygen burner 3 according to the present invention,
When the oxygen-containing gas 12 discharged from the opening 8 collides with the burner tile 9, the oxygen-containing gas 12 is efficiently mixed with the fuel gas 11 discharged from the fuel gas supply flow path 7, and the mixing is uniformly promoted in the circumferential direction. Therefore, a short flame is formed. Therefore,
This oxygen burner 3 is very useful for heating and melting an object in a place where a so-called short flame is required. In addition, if the refractory powder 2 (including metal powder) is mixed with the fuel gas 11, it can be used in a narrow place. It can be widely used for refractory thermal spray repairs in Japan. The refractory powder 2 was added to the fuel gas 11.
Mixing such as may be performed between the hopper 1 and the opening of the leading end of the supply flow path 7 for the fuel gas 11, and a known means can be used.
【0010】耐火物溶射補修に使用する場合、炉壁等の
損耗部への衝突速度を小さくし、吹付け材のリバウンド
ロスを低減させるには、火炎は目的に応じて細いものか
ら広いものまで変更する必要がある。本発明に係る酸素
バーナでは、前述の開口8の角度θを変更することによ
り火炎形状を任意に設定可能であり、θ=45°で最も
広幅な火炎が形成され、θ=90°では細い火炎が形成
できるのである。具体的には、種々の角度θの開口8を
有するキャップ10を準備しておき、使用場所に対応し
て該キャップ10の交換をすることになる。ここで、θ
を45°から90度に限定した理由は、θを45°以下
にするためには前述のバーナタイル9が長くなり過ぎ、
せまい空間に挿入し、溶射を行う酸素バーナには不適切
であるためである。また、θを90°以上にした場合、
燃料ガス11の供給流路7に対し、逆流を与え、火炎が
安定しないからである。[0010] When used for repair of refractory spraying, to reduce the collision speed against a worn part such as a furnace wall and to reduce the rebound loss of the sprayed material, the flame should be thin to wide depending on the purpose. Need to change. In the oxygen burner according to the present invention, the flame shape can be arbitrarily set by changing the angle θ of the opening 8, and the widest flame is formed at θ = 45 °, and the narrow flame is formed at θ = 90 °. Can be formed. Specifically, the caps 10 having the openings 8 having various angles θ are prepared, and the caps 10 are exchanged according to the place of use. Where θ
The reason for limiting the angle from 45 ° to 90 ° is that the burner tile 9 becomes too long in order to make θ less than 45 °,
This is because it is not suitable for an oxygen burner that is inserted into a narrow space and performs thermal spraying. When θ is set to 90 ° or more,
This is because a backflow is given to the supply flow path 7 of the fuel gas 11 and the flame is not stabilized.
【0011】さらに、本発明に係る酸素バーナでは、燃
料ガスには高炉ガス、転炉ガス、コークス炉ガスの他、
プロパン、ブタン等の炭化水素系ガスが利用でき、酸素
含有ガスには酸素、空気等が好適である。Furthermore, in the oxygen burner according to the present invention, the fuel gas includes blast furnace gas, converter gas, coke oven gas,
Hydrocarbon gases such as propane and butane can be used, and oxygen, air and the like are preferable as the oxygen-containing gas.
【0012】[0012]
【実施例】以下、本発明に係る酸素バーナを耐火物の溶
射補修に使用した場合の、火炎長さ、温度分布調査結果
(図3)、火炎形状調査結果(図2)、吹付け効率(表
1)について説明する。図3は、従来の酸素バーナ(図
4参照)と本発明に係る酸素バーナ(θ=45°)を用
いてた際の火炎内温度及び未燃ガス量の測定結果であ
る。未燃ガスとしては、全燃焼排ガス中の未燃成分(C
O、CH4 、CmHm、H2 )のトータルをプロットし
ている。図3より、従来の酸素バーナでは未燃ガスが消
失する距離がノズル先端より400mmの点であった
が、本発明に係る酸素バーナでは150mmの位置で完
全消失しており、火炎長さが非常に短くなっていること
がわかった。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following, when the oxygen burner according to the present invention is used for thermal spray repair of refractories, the flame length, the temperature distribution investigation results (FIG. 3), the flame shape investigation results (FIG. 2), and the spraying efficiency (FIG. Table 1) will be described. FIG. 3 shows the measurement results of the temperature in the flame and the amount of unburned gas when using the conventional oxygen burner (see FIG. 4) and the oxygen burner according to the present invention (θ = 45 °). As unburned gas, unburned components (C
The total of O, CH 4 , CmHm, and H 2 ) is plotted. From FIG. 3, in the conventional oxygen burner, the distance at which the unburned gas disappears was 400 mm from the nozzle tip, but in the oxygen burner according to the present invention, it completely disappeared at the position of 150 mm, and the flame length was extremely short. Turned out to be shorter.
【0013】また、火炎温度に関しては、未燃ガスが消
失する点でいずれの酸素バーナも最高温度を程するが、
本発明に係る酸素バーナの方がフレーム長さが短いた
め、放熱が小さく、最高温度は約100℃だけ従来の酸
素バーナより高くなっており、効率的な混合、燃焼が行
われていることがわかる。次に、図2は、ノズル先端か
ら200mmの位置に耐火物壁を設置し、火炎の流れを
観察したものである。図2より、従来の酸素バーナで
は、外側から酸素を供給するため、シャープなフレーム
が形成され、壁へのフレームの衝突速度は100m/s
とかなり早いが、本発明に係る酸素バーナでは、θの変
更によりかなりフレーム形状が変更可能で、θ=90°
で上記衝突速度は30m/sまで、θ=45°で10m
/sまで低減可能であることがわかった。Regarding the flame temperature, all the oxygen burners reach the maximum temperature at the point where the unburned gas disappears.
Since the oxygen burner according to the present invention has a shorter frame length, heat radiation is small, and the maximum temperature is higher than that of the conventional oxygen burner by about 100 ° C., so that efficient mixing and combustion are performed. Recognize. Next, FIG. 2 is a view in which a refractory wall was set at a position 200 mm from the nozzle tip and the flow of the flame was observed. From FIG. 2, in the conventional oxygen burner, since oxygen is supplied from the outside, a sharp frame is formed, and the collision speed of the frame against the wall is 100 m / s.
However, in the oxygen burner according to the present invention, the frame shape can be considerably changed by changing θ, and θ = 90 °
The collision speed is up to 30 m / s and 10 m at θ = 45 °
/ S.
【0014】最後に、吹付け材の吹付け効率を上記二種
類の酸素バーナで調査した結果を表1に示す。表1よ
り、本発明に係る酸素バーナは火炎長さを短くし、かつ
耐火壁面への衝突速度を低下させたため、吹付け材のリ
バウンドロスが低減し、大幅に効率が改善されているこ
とが確認できた。Finally, Table 1 shows the results obtained by examining the spraying efficiency of the spray material with the above two types of oxygen burners. From Table 1, it can be seen that the oxygen burner according to the present invention shortened the flame length and reduced the collision speed against the fire-resistant wall, so that the rebound loss of the sprayed material was reduced and the efficiency was greatly improved. It could be confirmed.
【0015】[0015]
【表1】 ──────────────────────────────────── 従来法 本発明 θ=90° θ=45° 付着効率 62% 92% 96% ────────────────────────────────────Table 1 ──────────────────────────────────── Conventional method The present invention θ = 90 ° θ = 45 ° Adhesion efficiency 62% 92% 96% ────────────────────────────────────
【0016】[0016]
【発明の効果】以上述べたように、本発明を採用するこ
とで以下の効果が得られた。 (1)短い火炎が得られるため、従来では困難であった
コークス炉等のせまい空間でも容易に耐火物粉末の溶射
が可能となった。 (2)高温及び幅広の火炎形状が得られるため、吹付け
材効率が向上した。 (3)(1)、(2)の結果として補修の作業時間、作
業性の改善も図れた。 (4)高温度で効率よく吹付けるため、吹付け補修部の
寿命も延長できた。As described above, the following effects are obtained by adopting the present invention. (1) Since a short flame can be obtained, it is possible to easily spray the refractory powder even in a small space such as a coke oven, which was difficult in the past. (2) Since a high temperature and a wide flame shape can be obtained, the spraying material efficiency is improved. (3) As a result of (1) and (2), the repair work time and workability were improved. (4) The service life of the spray repair part can be extended because the spray is efficiently performed at a high temperature.
【図1】本発明に係る酸素バーナの一例を示す図であ
り、(a)は側断面図、(b)は(a)のA−A矢視図
である。FIG. 1 is a view showing an example of an oxygen burner according to the present invention, wherein (a) is a side sectional view, and (b) is a view taken along the line AA of (a).
【図2】従来バーナと本発明バーナによる火炎形状の比
較図である。FIG. 2 is a comparison diagram of flame shapes of a conventional burner and a burner of the present invention.
【図3】本発明による酸素バーナの使用成績を示す図で
ある。FIG. 3 is a diagram showing the use results of the oxygen burner according to the present invention.
【図4】従来の酸素バーナの側断面を示す図である。FIG. 4 is a diagram showing a side cross section of a conventional oxygen burner.
【図5】溶射補修方法による炉壁補修を説明する図であ
る。FIG. 5 is a view for explaining furnace wall repair by a thermal spray repair method.
1 ホッパ 2 耐火物粉末 3 酸素バーナ 4 火炎 5 耐火物損耗部 6 中心流路 7 供給流路 8 開口 9 バーナタイル 10 キャップ 11 燃料ガス 12 酸素含有ガス DESCRIPTION OF SYMBOLS 1 Hopper 2 Refractory powder 3 Oxygen burner 4 Flame 5 Refractory wear part 6 Central flow path 7 Supply flow path 8 Opening 9 Burner tile 10 Cap 11 Fuel gas 12 Oxygen-containing gas
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松田 惠嗣 千葉市中央区川崎町1番地 川崎製鉄株 式会社 千葉製鉄所内 (56)参考文献 実開 平1−74422(JP,U) 実開 昭54−102731(JP,U) (58)調査した分野(Int.Cl.6,DB名) F23D 14/22 F23D 14/56 F23D 14/84────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Keiji Matsuda 1 Kawasaki-cho, Chuo-ku, Chiba-shi Kawasaki Steel Corporation Chiba Works (56) References Hirai 1-74422 (JP, U) Shohei Mikai 54-102731 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) F23D 14/22 F23D 14/56 F23D 14/84
Claims (4)
中心流路の周囲に設けられ且つ先端部が後退した燃料ガ
スの供給流路からなる先端凸型のバーナノズル本体と、
上記燃料ガス供給流路の先端部外周側に配設した少なく
とも中心流路先端まで延出した筒状バーナタイルとを備
え、前記中心流路の先端は閉鎖され、円周方向に複数個
の開口を設けたことを特徴とする酸素バーナ。1. A burner nozzle body having a convex end provided with a central flow path for supplying an oxygen-containing gas and a fuel gas supply flow path provided around the central flow path and having a retreated tip.
A cylindrical burner tile extending to at least the center flow channel tip disposed on the outer peripheral side of the tip portion of the fuel gas supply flow channel, wherein the tip of the center flow channel is closed, and a plurality of openings are provided in the circumferential direction. An oxygen burner characterized by comprising:
路軸に対し45〜90度の角度で設けたことを特徴とす
る請求項1記載の酸素バーナ。2. The oxygen burner according to claim 1, wherein the opening of the center flow path is provided at an angle of 45 to 90 degrees with respect to the fuel gas supply flow path axis.
が、取外し自在のキャップであることを特徴とする請求
項2記載の酸素バーナ。3. The oxygen burner according to claim 2, wherein a tip portion of the center flow path provided with the opening is a removable cap.
粉末を混合させる混合手段を備えたことを特徴とする請
求項1、2、3のいずれか1つに記載の酸素バーナ。4. The oxygen burner according to claim 1, further comprising mixing means for mixing the refractory powder and / or the metal powder into the fuel gas.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1677094A JP2807165B2 (en) | 1994-02-10 | 1994-02-10 | Oxygen burner |
TW84104390A TW268086B (en) | 1994-01-26 | 1995-05-02 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1677094A JP2807165B2 (en) | 1994-02-10 | 1994-02-10 | Oxygen burner |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07225011A JPH07225011A (en) | 1995-08-22 |
JP2807165B2 true JP2807165B2 (en) | 1998-10-08 |
Family
ID=11925458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1677094A Expired - Fee Related JP2807165B2 (en) | 1994-01-26 | 1994-02-10 | Oxygen burner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2807165B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101177213B1 (en) * | 2008-06-04 | 2012-08-24 | 구로사키 하리마 코포레이션 | Flame spraying repair equipment, and flame spraying repair method of coke oven |
CN103759538B (en) * | 2014-01-20 | 2015-06-10 | 中国十九冶集团有限公司 | Method for replacing burner block of heating furnace with reserved furnace top |
-
1994
- 1994-02-10 JP JP1677094A patent/JP2807165B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH07225011A (en) | 1995-08-22 |
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