JP2986244B2 - Pulverized coal injection lance for blast furnace - Google Patents
Pulverized coal injection lance for blast furnaceInfo
- Publication number
- JP2986244B2 JP2986244B2 JP3117151A JP11715191A JP2986244B2 JP 2986244 B2 JP2986244 B2 JP 2986244B2 JP 3117151 A JP3117151 A JP 3117151A JP 11715191 A JP11715191 A JP 11715191A JP 2986244 B2 JP2986244 B2 JP 2986244B2
- Authority
- JP
- Japan
- Prior art keywords
- pulverized coal
- pulverized
- lance
- blast furnace
- diffuser
- 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
Landscapes
- Manufacture Of Iron (AREA)
- Blast Furnaces (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高炉の羽口から微粉炭
を炉内に吹込んで高炉の生産性を向上させることができ
る高炉用微粉炭吹込ランスに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulverized coal injection lance for a blast furnace, which can improve the productivity of the blast furnace by blowing pulverized coal into the blast furnace from the tuyere of the blast furnace.
【０００２】[0002]
【従来の技術】従来から高炉においては、送風羽口から
微粉砕された石炭（以下微粉炭）を炉内に吹込み、生産
性の向上、経済性の向上等が図られてきた。微粉炭吹込
み用ランスは種々あるが、ランスの寿命および吹込み微
粉炭の燃焼性を向上するため、たとえば特開平２−2134
06号公報には、炉内に熱風を送風する羽口またはブロー
パイプ内に先端部を突き出して挿入したランスから微粉
炭を送給して熱風により高炉羽口から吹込む方法におい
て、ランスとして内管および外管からなる二重管を使用
し、ランスの内管から送給される気送微粉炭を、微粉炭
の性状および送給量に応じて外管から送給される空気の
酸素濃度を制御しつつ燃焼させ、熱風により高炉内に吹
込む方法が開示されている。2. Description of the Related Art Conventionally, in a blast furnace, finely pulverized coal (hereinafter referred to as pulverized coal) has been blown into a furnace from a blowing tuyere to improve productivity and economic efficiency. There are various types of pulverized coal injection lances.
No. 06 discloses a method of feeding pulverized coal from a tuyere that blows hot air into a furnace or a lance that protrudes and inserts a tip into a blow pipe, and blows it from the blast furnace tuyere with hot air. Using a double pipe consisting of a pipe and an outer pipe, the pulverized pulverized coal supplied from the inner pipe of the lance, and the oxygen concentration of the air supplied from the outer pipe according to the properties and amount of pulverized coal Are controlled and burned, and blown into a blast furnace by hot air is disclosed.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら前記従来
技術によっても、微粉炭の吹込み量が多量になると、二
重管ランスの外管から送給される燃焼用空気の酸素濃度
を制御しても、微粉炭燃焼率の向上が実現できなくなっ
てくる。その理由は、微粉炭吹込量の増加と共に、微粉
炭ＣがCOまたは CO2になる割合すなわち燃焼率が低下す
るため、その吹込量は 160kg／ｔ・銑鉄が限度であり、
160kg／ｔ・銑鉄では燃焼率は60％程度になる。したが
って 160kg／ｔ・銑鉄以上吹込むと微粉炭は羽口前方に
形成されるレースウェイ内での燃焼および高炉内でのガ
ス化による間接還元あるいは固体Ｃによる直接還元によ
り消費されることなく高炉外へ飛散して無駄になってし
まう。However, according to the above prior art, when the amount of pulverized coal blown is large, even if the oxygen concentration of the combustion air supplied from the outer tube of the double tube lance is controlled. However, it becomes impossible to improve the pulverized coal combustion rate. This is because, with increasing of the pulverized coal blown amount, the ratio i.e. combustion rate of pulverized coal C is CO or CO 2 is reduced, the blowing amount is limit 160 kg / t · pig iron,
At 160 kg / t pig iron, the combustion rate is about 60%. Therefore, when injecting 160 kg / t pig iron or more, pulverized coal is discharged from the blast furnace without being consumed by indirect reduction by combustion in the raceway formed in front of the tuyere and gasification in the blast furnace or direct reduction by solid C. Scattered to waste.
【０００４】本発明はこのような実情に鑑みてなされた
ものであり、従来技術に比較して燃焼率よく大量の微粉
炭を吹込むことができる高炉用微粉炭吹込ランスを提供
することを目的とするものである。The present invention has been made in view of such circumstances, and an object of the present invention is to provide a pulverized coal injection lance for a blast furnace capable of injecting a large amount of pulverized coal with a higher combustion rate than that of the prior art. It is assumed that.
【０００５】[0005]
【課題を解決するための手段】本発明者らが、羽口前方
のレースウェイ内での微粉炭の燃焼を想定した燃焼炉で
の微粉炭燃焼実験を行ったところ、燃焼フレームの長手
方向中心部の微粉炭燃焼率が周辺部に比較して極端に低
いことが分かった。これは中心部の流速が大きく滞溜時
間が短く微粉炭の濃度が中心部で高いため燃焼率が低下
するためである。The present inventors conducted a pulverized coal combustion experiment in a combustion furnace assuming the combustion of pulverized coal in a raceway in front of the tuyere. It was found that the pulverized coal combustion rate of the part was extremely lower than that of the peripheral part. This is because the combustion rate decreases because the flow velocity in the central portion is large, the residence time is short, and the concentration of pulverized coal is high in the central portion.
【０００６】本発明は二重ランスから噴射される気送微
粉炭の中心部での微粉炭濃度を下げ、全体に微粉炭をば
らまいて均一化させることに着目して、種々実験を重ね
た結果により開発されたものであり、その要旨とすると
ころは次の通りである。すなわち本発明は、二重管から
なり、内管からは気送微粉炭を、外管からは前記内管の
冷却用空気を噴射する高炉用微粉炭ランスにおいて、前
記ランスの外管先端部に設けた取付座に、先端部外周に
複数個のＵ字状切欠きを外周上に等間隔に配設すると共
に、内部中央に気送微粉炭に対向する基部がコーン状の
拡散体を設け、かつこの拡散体の後部に直進流路と拡散
流路を形成したカップリングを、着脱自在に取付けたこ
とを特徴とする高炉用微粉炭吹込ランスである。The present invention focuses on lowering the pulverized coal concentration at the center of pneumatic pulverized coal injected from a double lance and dispersing the pulverized coal throughout the pulverized coal to obtain uniform results. The gist of this is as follows. That is, the present invention comprises a double pipe, a pulverized coal blast for the blast furnace which injects pneumatic pulverized coal from the inner pipe, and cooling air for the inner pipe from the outer pipe, at the tip of the outer pipe of the lance. In the provided mounting seat, a plurality of U-shaped notches are arranged on the outer periphery at the tip end portion at equal intervals on the outer periphery, and a base opposed to the pulverized pulverized coal is provided in the center of the inside with a cone-shaped diffuser, A pulverized coal injection lance for a blast furnace, wherein a coupling having a straight flow path and a diffusion flow path formed at the rear of the diffuser is detachably attached.
【０００７】また本発明では、Ｕ字状切欠きを配設しな
いで内部中央に気送微粉炭に対向する基部がコーン状の
拡散体を設け、この拡散体の後部にスパイラル流路を形
成したカップリングを着脱自在に取付けるようにするこ
ともできる。In the present invention, a U-shaped notch is not provided, and a base having a cone-shaped base opposed to the pulverized coal pulverized coal is provided in the center of the inside, and a spiral flow path is formed at the rear of the diffuser. The coupling may be detachably mounted.
【０００８】[0008]
【作 用】本発明は以上の構成であるので二重管の内管
内を流れる気送微粉炭は周辺部に比較して中心部の微粉
炭濃度が高いが中心部の気送微粉炭が、気送微粉炭に対
向するように設けられたコーン状拡散体によって周辺部
に拡散される。このようにして中心部から周辺部に拡散
された微粉炭は外管先端部外周に配設された複数のＵ字
状切欠きまたはスパイラル流路を通過して全体にばらま
かれて均一化されるので、微粉炭の燃焼率が向上する。[Operation] Since the present invention has the above configuration, the pulverized pulverized coal flowing in the inner pipe of the double pipe has a higher concentration of pulverized coal in the center portion than in the peripheral portion. It is diffused to the peripheral part by a cone-shaped diffuser provided to face the pneumatic pulverized coal. In this way, the pulverized coal diffused from the central portion to the peripheral portion passes through a plurality of U-shaped notches or spiral flow channels arranged on the outer periphery of the outer tube tip portion, and is scattered throughout and homogenized. Therefore, the combustion rate of pulverized coal is improved.
【０００９】[0009]
【実施例】以下本発明の実施例を図面に従って説明す
る。図１の（ａ）、（ｂ）は本発明の一実施例を示し、
二重管ランス３は同心の内管１と外管２とから構成され
ているが、本発明では外管３の先端部に取付座４を設け
てあり、この取付座４の内側に雌ねじ５を切削してあ
る。Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B show one embodiment of the present invention,
The double tube lance 3 is composed of a concentric inner tube 1 and an outer tube 2. In the present invention, a mounting seat 4 is provided at the tip of the outer tube 3, and a female screw 5 is provided inside the mounting seat 4. Has been cut.
【００１０】一方、先端部外周に複数個（図面では４
個）のＵ字状切欠き６を外周上に等間隔に配設すると共
に、内部中央に気送微粉炭に対向する基部がコーン状の
拡散体７を設けたカップリング８には雄ねじ９が設けて
ある。そして前記取付座４の内側に設けた雌ねじ５にカ
ップリング８の雄ねじ９をねじ込んで一体化してある。
なお基部がコーン状の拡散体７とカップリング８は真っ
直ぐな接続プレート10を介して溶接により一体化された
構造になっている。On the other hand, a plurality (4 in the drawing)
) U-shaped notches 6 are arranged at equal intervals on the outer periphery, and a male screw 9 is provided on the coupling 8 having a base 7 provided with a cone-shaped diffuser 7 at the center of the inside facing the pulverized pulverized coal. It is provided. The male screw 9 of the coupling 8 is screwed and integrated with the female screw 5 provided inside the mounting seat 4.
The conical diffuser 7 and the coupling 8 are integrated by welding through a straight connecting plate 10.
【００１１】本発明に係る二重管羽口３の作用について
説明する。二重管ランス３の内管１から気送微粉炭が通
過し、外管２から冷却用空気が供給される。このとき気
送微粉炭は、中心部の濃度が高く、周辺部の濃度が低い
まま内管１を通過して取付座４内に吹き出し、外管２か
ら供給される空気と混合されることになる。このように
して冷却用空気と混合された気送微粉炭は、カップリン
グ８の内部に設けた拡散体７のコーン状基部に衝突した
後、Ｕ字状切欠き６からその外方に拡散されるものと、
拡散体７とカップリング８との間隙を直進するものとに
区分され、その分散により微粉炭濃度が局部的に高い部
分が解消される。The operation of the double tube tuyere 3 according to the present invention will be described. Pneumatic pulverized coal passes through the inner pipe 1 of the double pipe lance 3, and cooling air is supplied from the outer pipe 2. At this time, the pulverized pulverized coal is blown into the mounting seat 4 through the inner pipe 1 while the concentration in the central portion is high and the concentration in the peripheral portion is low, and is mixed with the air supplied from the outer tube 2. Become. The pulverized pulverized coal mixed with the cooling air in this manner collides with the cone-shaped base of the diffuser 7 provided inside the coupling 8 and is diffused outward from the U-shaped notch 6. And
It is divided into a member that goes straight through the gap between the diffuser 7 and the coupling 8, and a portion where the pulverized coal concentration is locally high is eliminated by the dispersion.
【００１２】次に図３に基づいて実機高炉羽口部に近似
させた燃焼実験炉11に前記本発明の二重管羽口３を適用
する場合について説明する。ブローパイプ12から1100〜
1200℃の熱風が羽口14を通して燃焼実験炉11に送られる
ようになっている。一方、燃焼実験炉11に接続されたブ
ローパイプ12に傾斜して設けられたランスガイド管13に
二重管ランス３が挿入され、羽口14の中央部に、二重管
ランス３の取付座４を介して取付けられたカップリング
８が突き出している。そして微粉炭供給管15から微粉炭
がキャリア空気によって二重管ランス３の内管１に供給
され、空気供給管16から冷却用空気が外管２に供給され
る。Next, a case where the double tube tuyere 3 of the present invention is applied to a combustion experimental furnace 11 approximated to the tuyere portion of an actual blast furnace will be described with reference to FIG. Blow pipe 12-1100 ~
Hot air of 1200 ° C. is sent to the combustion experimental furnace 11 through the tuyere 14. On the other hand, the double tube lance 3 is inserted into the lance guide tube 13 provided at an angle to the blow pipe 12 connected to the combustion experimental furnace 11, and the mounting seat of the double tube lance 3 is provided at the center of the tuyere 14. A coupling 8 mounted via 4 protrudes. Then, pulverized coal is supplied from the pulverized coal supply pipe 15 to the inner pipe 1 of the double pipe lance 3 by carrier air, and cooling air is supplied to the outer pipe 2 from the air supply pipe 16.
【００１３】このようにして微粉炭は二重管ランス３の
内管１内を流れ、冷却用空気は外管２内を流れて取付座
４内に吹き出した微粉炭が冷却用空気と混合しながら前
述のようにしてカップリング８の内部に設けた拡散体７
のコーン状基部に衝突してＵ字状切欠き６から外方に拡
散されるものと、拡散体７とカップリング８との間隙を
直進するものとに分散される。このようにしてカップリ
ング８から吹出した後、羽口14内を流れる1100〜1200℃
程度の熱風と合流して微粉炭を燃焼しつつ燃焼実験炉11
内に送風されるので微粉炭濃度が均一になり、燃焼性の
向上が達成される。この時、気送微粉炭の分散の程度は
主としてコーン状拡散体７の円錐角θ〔図１の（ａ）参
照〕によって決まる。In this way, the pulverized coal flows in the inner pipe 1 of the double pipe lance 3, and the cooling air flows in the outer pipe 2 and the pulverized coal blown out into the mounting seat 4 mixes with the cooling air. The diffuser 7 provided inside the coupling 8 as described above
Are diffused outward from the U-shaped notch 6 by colliding with the cone-shaped base portion, and those that go straight through the gap between the diffuser 7 and the coupling 8. After blowing out from the coupling 8 in this way, the temperature in the tuyere 14 is 1100 to 1200 ° C.
Combustion Experimental Furnace 11
Since the air is blown into the inside, the pulverized coal concentration becomes uniform, and an improvement in combustibility is achieved. At this time, the degree of dispersion of the pulverized pulverized coal is mainly determined by the cone angle θ of the cone-shaped diffuser 7 (see FIG. 1A).
【００１４】この結果、燃焼実験炉11内の炉軸芯の微粉
炭燃焼率が向上し、軸直角方向の燃焼率はほぼフラット
な分布状態となり、全体の燃焼率が向上した。なお、従
来の二重管ランスによれば微粉炭を 160kg／ｔ・銑鉄、
吹込み相当時の燃焼率は全体で60％程度であったが、本
発明の二重管ランスによれば微粉炭 200kg／ｔ・銑鉄、
吹込み相当時においても全体で70％となり、 160kg／ｔ
・銑鉄、相当時を上廻る値となった。As a result, the burning rate of pulverized coal at the furnace core in the experimental combustion furnace 11 was improved, and the burning rate in the direction perpendicular to the axis became substantially flat, and the overall burning rate was improved. In addition, according to the conventional double pipe lance, pulverized coal is 160 kg / t
The combustion rate at the time of injection was about 60% in total, but according to the double-tube lance of the present invention, pulverized coal 200 kg / t pig iron,
Even at the equivalent of blowing, it is 70% in total, 160kg / t
・ Pig iron exceeded the equivalent time.
【００１５】以上では、燃焼実験炉について説明したが
実機高炉においても同様にして実施可能であり、 200kg
／ｔ・銑鉄程度の微粉炭を吹込んでも微粉炭が無駄に系
外に排出することなく、燃焼率よく使用することができ
る。図２の（ａ）、（ｂ）は本発明の他の一実施例を示
し、外管３の先端部に設けてある取付座４の内側に雌ね
じ５を切削してあるのは前記実施例と同じであるが、カ
ップリング８の先端部外周にＵ字状切欠きを配設しない
で、内部中央に気送微粉炭に対向する基部がコーン状の
拡散体７を設け、このコーン状拡散体７の後部とカップ
リング８との間に複数個のスパイラル翼17（図面では４
個）をはめ込み、溶接により一体構造にしてある。なお
カップリング８の外側には雄ねじ９が切削してあり、こ
の雄ねじ９を取付座４の雌ねじ５に着脱自在に取付けて
あるのは前記実施例と同じである。In the above, the combustion experimental furnace has been described.
Even when pulverized coal of about / t · pig iron is injected, the pulverized coal can be used with a good combustion rate without being discharged to the outside of the system. 2 (a) and 2 (b) show another embodiment of the present invention, wherein the female screw 5 is cut inside the mounting seat 4 provided at the tip of the outer tube 3 in the above embodiment. However, a U-shaped notch is not provided on the outer periphery of the distal end portion of the coupling 8, but a diffuser 7 having a cone-shaped base at the center of the inside facing the pulverized pulverized coal is provided. A plurality of spiral wings 17 (4 in the drawing) are provided between the rear of the body 7 and the coupling 8.
Individual pieces) and welded into an integrated structure. A male screw 9 is cut outside the coupling 8, and the male screw 9 is detachably attached to the female screw 5 of the mounting seat 4 as in the above-described embodiment.
【００１６】二重管ランス３の内管１内を流れる気送微
粉炭は外管２から供給される冷却用空気と混合された
後、コーン状基部に衝突し、さらにスパイラル翼17によ
り形成された複数のスパイラル通路を通ることにより気
送微粉炭の流れに旋回運動が与えられ、その先端から噴
出した段階で、遠心力の抑制がなくなる結果、外方に拡
散することになる。旋回による分散の程度は主としてス
パイラル翼17のねじれ角によって決まる。かくして前記
のような拡散作用により微粉炭濃度が局部的に高くなる
部分が解消されることになり、前記実施例と同様にして
微粉炭の燃焼率向上が達成される。The pulverized pulverized coal flowing through the inner pipe 1 of the double-pipe lance 3 is mixed with cooling air supplied from the outer pipe 2, then collides with the cone-shaped base, and is formed by the spiral blade 17. By passing through the plurality of spiral passages, the pneumatic coal pulverized coal is given a swirling motion. At the stage where the pulverized coal is spouted from its tip, the suppression of the centrifugal force is lost, so that the coal is diffused outward. The degree of dispersion due to the turning is mainly determined by the twist angle of the spiral blade 17. Thus, the portion where the pulverized coal concentration locally increases due to the diffusion action as described above is eliminated, and the improvement of the pulverized coal combustion rate is achieved in the same manner as in the above embodiment.
【００１７】なお前記実施例では二重管ランス３の取付
座４とカップリング８とをねじにより着脱するものにつ
いて説明したが、バヨネット等の他の適宜着脱手段を使
用することも可能である。In the above-described embodiment, the attachment and detachment of the mounting seat 4 of the double pipe lance 3 and the coupling 8 has been described. However, other appropriate attachment / detachment means such as a bayonet may be used.
【００１８】[0018]
【発明の効果】以上説明したように本発明によれば、二
重管ランスからブローパイプ内あるいは羽口に吹き込ま
れる微粉炭が局部的に濃度が高くなることなく均一に拡
散されるので高炉の羽口から熱風と共に炉内に吹込まれ
る微粉炭の燃焼率向上が達成される。またカップリング
や拡散体が摩耗して微粉炭の吹込みに支障のある場合に
は、取替が容易であり、常に安定して微粉炭の吹込みを
行うことができる。As described above, according to the present invention, the pulverized coal blown into the blow pipe or the tuyere from the double pipe lance is uniformly diffused without locally increasing the concentration, so that the blast furnace Improvement of the combustion rate of the pulverized coal blown into the furnace together with hot air from the tuyere is achieved. In addition, when the coupling or the diffuser is worn out and hinders the pulverized coal injection, replacement is easy, and the pulverized coal can be always stably injected.
【図１】本発明の一実施例を示し、（ａ）は縦断面図、
（ｂ）は（ａ）のＡ−Ａ矢視を示す横断面図である。FIG. 1 shows an embodiment of the present invention, wherein (a) is a longitudinal sectional view,
(B) is a transverse cross-sectional view showing AA of FIG.
【図２】本発明の他の一実施例を示し、（ａ）は縦断面
図、（ｂ）は（ａ）のＡ−Ａ矢視を示す平面図である。FIGS. 2A and 2B show another embodiment of the present invention, wherein FIG. 2A is a longitudinal sectional view, and FIG. 2B is a plan view taken along the line AA of FIG.
【図３】本発明を実験燃焼炉に適用した場合の縦断面図
である。FIG. 3 is a longitudinal sectional view when the present invention is applied to an experimental combustion furnace.
１ 内管 ２ 外管 ３ 二重管ランス ４ 取付座 ５ 雌ねじ ６ Ｕ字状切欠き ７ コーン状拡散体 ８ カップリング ９ 雄ねじ 10 接続プレート 11 燃焼実験炉 12 ブローパイプ 13 ランスガイド管 14 羽口 15 微粉炭供給管 16 空気供給管 17 スパイラル翼 DESCRIPTION OF SYMBOLS 1 Inner tube 2 Outer tube 3 Double tube lance 4 Mounting seat 5 Female screw 6 U-shaped notch 7 Conical diffuser 8 Coupling 9 Male screw 10 Connection plate 11 Combustion test furnace 12 Blow pipe 13 Lance guide tube 14 Tuyere 15 Pulverized coal supply pipe 16 Air supply pipe 17 Spiral wing
Claims (2)
を、外管からは前記内管の冷却用空気を噴射する高炉用
微粉炭ランスにおいて、前記ランスの外管先端部に設け
た取付座に、先端部外周に複数個のＵ字状切欠きを外周
上に等間隔に配設すると共に、内部中央に気送微粉炭に
対向する基部がコーン状の拡散体を設け、かつこの拡散
体の後部に直進流路と拡散流路を形成したカップリング
を、着脱自在に取付けたことを特徴とする高炉用微粉炭
吹込ランス。1. A blast furnace pulverized coal lance for spraying pulverized pulverized coal from an inner pipe and cooling air for the inner pipe from an outer pipe at a tip of the outer pipe of the lance. In the provided mounting seat, a plurality of U-shaped notches are arranged on the outer periphery at the tip end portion at equal intervals on the outer periphery, and a base opposed to the pulverized pulverized coal is provided in the center of the inside with a cone-shaped diffuser, A pulverized coal injection lance for a blast furnace, wherein a coupling having a straight passage and a diffusion passage formed at the rear of the diffuser is detachably attached.
気送微粉炭に対向する基部がコーン状の拡散体を設け、
この拡散体の後部にスパイラル流路を形成したカップリ
ングを着脱自在に取付けた請求項１記載の高炉用微粉炭
吹込ランス。2. A diffuser having a cone-shaped base opposed to the pulverized pulverized coal is provided in the center of the inside without providing a U-shaped notch,
2. A pulverized coal injection lance for a blast furnace according to claim 1, wherein a coupling having a spiral flow path is detachably attached to a rear portion of the diffuser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3117151A JP2986244B2 (en) | 1991-05-22 | 1991-05-22 | Pulverized coal injection lance for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3117151A JP2986244B2 (en) | 1991-05-22 | 1991-05-22 | Pulverized coal injection lance for blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04346610A JPH04346610A (en) | 1992-12-02 |
| JP2986244B2 true JP2986244B2 (en) | 1999-12-06 |
Family
ID=14704724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3117151A Expired - Fee Related JP2986244B2 (en) | 1991-05-22 | 1991-05-22 | Pulverized coal injection lance for blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2986244B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101564614B1 (en) | 2014-09-05 | 2015-10-30 | 현대건설 주식회사 | Fuel injection device for Coal Gasifier and Coal gasification facility comprising the same |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IN2014KN01261A (en) * | 2011-12-21 | 2015-10-16 | Jfe Steel Corp | |
| KR101629122B1 (en) * | 2011-12-21 | 2016-06-09 | 제이에프이 스틸 가부시키가이샤 | Blast furnace operation method |
| CN103374639A (en) * | 2012-04-13 | 2013-10-30 | 张昭贵 | Nozzle for pulverized coal |
| CN104611489A (en) * | 2015-02-05 | 2015-05-13 | 山西太钢不锈钢股份有限公司 | Blast furnace coal injection gun and manufacturing method thereof |
| CN112708471B (en) * | 2019-10-25 | 2021-11-30 | 中国石油化工股份有限公司 | Efficient coal gasification reaction device and efficient coal gasification reaction method |
-
1991
- 1991-05-22 JP JP3117151A patent/JP2986244B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101564614B1 (en) | 2014-09-05 | 2015-10-30 | 현대건설 주식회사 | Fuel injection device for Coal Gasifier and Coal gasification facility comprising the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04346610A (en) | 1992-12-02 |
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