JP2004075965A - Coke oven cover heating oven cover side of coke carbonization oven - Google Patents

Coke oven cover heating oven cover side of coke carbonization oven Download PDF

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Publication number
JP2004075965A
JP2004075965A JP2002267396A JP2002267396A JP2004075965A JP 2004075965 A JP2004075965 A JP 2004075965A JP 2002267396 A JP2002267396 A JP 2002267396A JP 2002267396 A JP2002267396 A JP 2002267396A JP 2004075965 A JP2004075965 A JP 2004075965A
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Japan
Prior art keywords
coke
furnace
nozzle
gas
oven
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Pending
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JP2002267396A
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Japanese (ja)
Inventor
Kesao Yamazaki
山▲崎▼ 今朝夫
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Yamazaki Corp
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Yamazaki Corp
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Publication date
Application filed by Yamazaki Corp filed Critical Yamazaki Corp
Priority to JP2002267396A priority Critical patent/JP2004075965A/en
Priority to US10/519,509 priority patent/US7341647B2/en
Priority to EP03764117A priority patent/EP1533357A1/en
Priority to KR1020047020123A priority patent/KR100649069B1/en
Priority to PCT/JP2003/007480 priority patent/WO2004007639A1/en
Priority to PL03373157A priority patent/PL373157A1/en
Priority to CA002489081A priority patent/CA2489081A1/en
Priority to CNB038137569A priority patent/CN100352891C/en
Priority to AU2003244118A priority patent/AU2003244118A1/en
Publication of JP2004075965A publication Critical patent/JP2004075965A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a coke oven cover provided with a nozzle for automatically supplying a combustible gas in response to the change in internal pressure within a coke-oven gas circulating box disposed at the coke carbonization oven side of the coke oven cover. <P>SOLUTION: The coke oven cover provided with the coke-oven gas circulating box at the coke carbonization oven side thereof is provided with a nozzle for blowing a combustion gas provided with a nozzle 15 directed to the side of the coke-oven gas circulating box and a nozzle pipe 18 for the combustion gas provided inside with a downwardly-opening blocking plate 17 free to open and close at the side of the nozzle 15 in a combustion gas supply pipe 14, constructed by coupling the downwardly-opening blocking plate 17 through a swingable connection rod 22 to a rod 21 fixed at the coke carbonization oven side of a slidable stopper plate 20 sliding within a cylinder 19 disposed at the uppermost side of the outer periphery of the nozzle pipe 18 so as to freely open and close and at the same time connecting the nozzle pipe 18 between the nozzle 15 and the downwardly-opening blocking plate 17 to the oven cover side of the cylinder 19 through a gas circulating pipe 23. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、コークス炭化室(炉)において、石炭粒子を乾留してコークスを製造する際に、コークス炭化炉の炉蓋近傍部に装入された石炭粒子の昇温を促し、不良コークスの低減化を図る、コークス炉蓋に関するものである。
【0002】
【従来の技術】
コークスは、コークス炭化炉に装入された石炭粒子を、空気を遮断しながらコークス炭化炉の両側に隣接した加熱室(炉)から放熱される高温度の熱で蒸し焼きにし、石炭の揮発分を除去して製造される。またコークスの製造装置には、多段燃焼式のカールスチル式炉、廃ガス循環式のコッパース式炉、コークス炭化炉の下部に2つの蓄熱室を設けたオットー式炉など、多くの種類のコークス炉が実用化に供されている。中には、炉高が7mを超える大型コークス製造装置を稼働させ、大量のコークスを製造している。しかしながら、コークス炭化炉に装入される石炭粒子は、生産性の向上から自ずと大量に充填されるため、加熱炉からの火回りがコークス炭化炉内で一様でなく、場所によっては乾留温度と乾留時間にばらつきがあった。特にコークス炉の押出機側と消火車側における炉長方向の両端部すなわちコークス炭化炉出入側の炉蓋近傍部において、火回りが悪く、乾留温度に達しないため、未乾留コークスすなわち不良コークスが多く製造される問題があった。この問題を解消するために、石炭粒子の整粒化を図って通気性を確保し、乾留効率を向上する手段が講じられている。しかしながら、この手段も炉蓋近傍部において、コークスを乾留温度に加熱する高温度の熱は、コークス炭化炉内に突き出す厚さ400mm程度の耐火煉瓦によって吸熱されるため、依然として温度が低く、不良コークスの製造を解消するに至っていなかった。
【0003】
こうした問題から、今日まで多くの種類のコークス炉蓋改善策が検討されている。その一つが、特公平3−40074号公報(昭和55年出願)に記載されたコークス戸扉である。該公報は「装入物から生成する熱い気体を、該装入物と接触する一つの扉の熱伝導性金属隔壁によってコークス炭化室と分離する扉の中の垂直な通路を通して送気管へ送り、その際の該気体の通路での上昇と熱伝導性隔壁によって該気体の熱の一部を移し、装入物の完全コークス化を図る」ものである。つまり、コークス炉蓋のコークス炭化炉側に熱伝導性金属壁の通路またはガス捕集室を設けた熱伝導性コークス炉蓋を提供するものである。この類のコークス炉蓋は、実公平2−26913号公報、特公平5−71074号公報など多くの公報によって紹介されている。また特開平7−258943号公報には「コークス炭化炉蓋と炉蓋枠との間に2重シール空間に空気導入管を配置し、2重シール空間から炉蓋内空間にバーナを配置した加熱式コークス炉蓋」、さらには特公平5−38795号公報には「コークス炭化炉内の装入石炭層もしくはコークス層の端面に加熱板との間に設けたガススペースで、乾留中に発生した可燃性ガスの一部を、ノズルから吹き込まれる空気または酸素で燃焼させ、該ガススペース内を700〜850℃に保持するコークス炉窯口の乾留促進方法」も開示されている。
この様にコークス炉蓋を加熱構造に改善する事によって、コークス炭化炉のコークス炉蓋近傍部に装入された石炭粒子が加熱されて乾留効率を上昇し、コークス生産率も向上する。ところが、この様な効果を奏するものとして開発された加熱式コークス炉蓋が、今だに実用化されない現状にある。
【0004】
【発明が解決しようとする課題】
本発明者らは、上記の様な加熱構造のコークス炉蓋が実用化に供されない問題の原因を追求すると共に、コークス炭化炉の炉蓋近傍部における不良コークスの削減化を図って生産性を向上するコークス炉蓋の加熱構造について検討した。その結果、本発明者らの推測によると、従来のコークス炉蓋の加熱構造は、可燃性ガスを、石炭粒子の燃焼による体積増加に影響するものと思われる乾留開始直後の高圧から乾留時間の経過に次第に減圧するコークス炭化炉内圧の状況変化に対応させながら吹込む方法でなく、ノズルから熱伝導性金属隔壁室あるいはガススペース室に一定量の可燃性ガスを常に吹込む方法であるため、可燃性ガスが大量に使用される問題があった。また1炉団全てのコークス炉蓋に、可燃性ガス供給制御装置を連接したノズルを設ける事は、コークス製造装置の製作費用が嵩み、延いてはコークス製造コストを高める問題があった。仮に、この様なノズルを設けても、コークス炉蓋毎にまた乾留時間に追従して可燃性ガスの供給量を微調整制御する事は、高温度でかつ炉体周辺で石炭粒子が飛び散る作業環境の中で厄介な作業に認識されるなど、多くの問題に原因があったものと考えられる。
【0005】
本発明者らはこの様な問題を解消しかつコークス炭化炉炉蓋近傍部の昇温を促進するコークス炉蓋を提供する事を目的に、燃焼用ガス吹込ノズルまたはガスバーナの構造について種々検討した結果、コークス炉蓋のコークス炭化炉側に設けた炉内ガス流通ボックス内に、該ボックス内の圧力変化に対応して、燃焼性ガスノズルの下開き閉塞板が自動的に開閉する燃焼用ガス吹込ノズルを設ける事によって、本発明の目的が達成する事ができた。
【0006】
【課題を解決するための手段】
上記の目的を達成した本発明の要旨は、コークス炭化炉側に炉内ガス流通ボックスを設けたコークス炭化炉蓋に、一側は炉内ガス流通ボックス側に指向するノズルを設け他側は燃焼用ガス供給源に連接した燃焼用ガス供給パイプのガス流通路にノズル側から遮断する開閉自在な下開き閉塞板を内設した燃焼用ガスノズルパイプを設けまた該燃焼用ガスノズルパイプの外周最上側に配置したシリンダーの内部を摺動する進退自在な滑栓板のコークス炭化炉側に固定したロッドに揺動連結桿を介して前記下開き閉塞板を駆動開閉自在に連結すると共にノズルと下開き閉塞板の間の燃焼用ガスノズルパイプとシリンダーの炉蓋側とをガス流通パイプで接続して構成した燃焼用ガス吹込ノズルを設けたコークス炭化炉の炉蓋側を加熱するコークス炉蓋である。
【0007】
【発明の実施の形態】
以下、本発明について図面を参照しながら詳細に説明する。
図1は本発明の一実施例で、炉高方向の断面図を示す。図2は、本発明における燃焼用ガス吹込ノズル(またはガスバーナ)の拡大断面図を示す。図1において、1は、コークス炉のコークス炭化炉である。2は、コークス炭化炉1に装入された石炭粒子である。すなわち、石炭粒子2は、コークス炭化炉1の両側に隣接して設けられた加熱炉から放出される高温度の熱によって、乾留される。Aは、押圧締結構造のコークス炭化炉蓋である。コークス炭化炉蓋Aは、コークス炭化炉1のコークス押出機側またコークス窯出側の炉口枠3を押圧しかつ締結する構造体のフレーム4の外周に設けたナイフエッジ断面形状のフランジ部材5と該フランジ部材5を押圧自在な伸縮駆動部材6で、耐熱性金属のシールプレート7を介して、出入口8を開閉するものである。すなわち、コークス炭化炉蓋Aは、コークス炭化炉1の出入口8を気密に閉塞する通常の開閉構造に組立てられている。9は、コークス炭化炉蓋Aのコークス炭化炉1側に設けられた炉内ガス流通ボックスである。炉内ガス流通ボックス9は、コークス炭化炉1に装入された石炭粒子2を乾留する際に発生する炉内発生ガスを流入しかつ流通させるものであって、炉高方向を複数段に分割する位置に設けた横体支持枠10に石炭粒子2の侵入を遮蔽する耐熱金属の短冊板11を左右に微小な通気用間隙(または通気口)を設けて縦横に並列した有底または無底のボックスで、上端部には天板12または排気パイプ(図示せず)に繋がる排気孔(図示せず)を設けて構成され、断熱ボックス13さらにシールプレート7を介してコークス炭化炉蓋Aに固定されている。本発明において、炉内ガス流通ボックス9は、図示する様な構造体の他に、耐熱ボックス部材の壁面に任意な数と位置に炉内ガス流入孔を穿設した炉内ガス流通ボックスでもよく、その構造について特に限定するものでない。Bは、燃焼用ガス吹込ノズルである。
【0008】
燃焼用ガス吹込ノズルBについては、図2に拡大して詳細に示す様に、燃焼用ガス供給パイプ14の一側は炉内ガス流通ボックス9側に指向するノズル15を設け、他側は空気、酸素ガスの他に燃料用ガスなどの燃焼用ガス供給源(図示せず)に連接したガス流通路16にノズル15側から遮断する開閉自在な下開き閉塞板17を内設した燃焼用ガスノズルパイプ18を設け、また該燃焼用ガスノズルパイプ18の外周最上側に配置したシリンダー19の内部を摺動する進退自在な滑栓板20のコークス炭化炉1側に固定した出入自在なロッド21に揺動連結桿22を介して前記下開き閉塞板17を枢動自在に連結すると共に、ノズル15と下開き閉塞板17の間の燃焼用ガスノズルパイプ18とシリンダー19の炉蓋側とをガス流通パイプ23で接続して構成されている。また図2は開閉自在な下開き閉塞板17の駆動機構を示したもので、シリンダー19の滑栓板20に固定されたロッド21と下開き閉塞板17を開閉駆動する揺動連結桿22の両部材を、揺動連結桿22の長手方向に穿設した走行ガイド用の長孔25を遊貫する連結軸24で接続する構造に設けられている。つまり、ロッド21の進退動作に連動して揺動連結桿22が傾倒動作を起こし、揺動連結桿22の傾倒動作が下開き閉塞板17の開閉駆動源になって、実線位置から2点鎖線位置に移動しまたその反対に2点鎖線から実線へと移動する度に下開き閉塞板17を開閉する構造に設けられている。
なお、本発明において、燃焼用ガス吹込ノズルBをガスバーナノズルとして使用する場合は、ノズル15の近傍部に着火器具を設けてもよい。また26は架台(または支持台)で、燃焼用ガスノズルパイプ18の外周最上側位置にシリンダー19を搭載しかつ固定するものである。
【0009】
上記の様に構成された本発明のコークス炉蓋は、従来のコークス操業と同様にシールプレート7を介してコークス炭化炉1の出入口8を、コークス炭化炉蓋Aで閉塞する。しかる後、コークス炭化炉1に石炭粒子2を装入する。コークス炭化炉1に装入された石炭粒子2は、隣接する加熱炉から放熱される高温度の熱で乾留されながら、コークスへと変成する。またコークス炭化炉1の中央部に装入された石炭粒子2から発生した高温度の熱を保有する炉内発生ガスは、炉内ガス流通ボックス9へ流動しつつ、炉蓋近傍部の石炭粒子2を加熱しながら、炉内ガス流通ボックス9の通気用間隙から該炉内ガス流通ボックス9に流入する。炉内ガス流通ボックス9に流入した炉内発生ガスは、該炉内ガス流通ボックス9の壁を加熱しながら、その伝導熱で炉蓋近傍部の石炭粒子2を加熱し昇温する。
【0010】
ところが、コークス炭化炉1の炉内圧変化は、前記した様に乾留直後では、コークス炭化炉1に装入された石炭粒子2の燃焼による体積増加によって高圧化し、乾留時間の経過と共に、漸次低圧化する。本発明における燃焼用ガス吹込ノズルBは、この変化に追従した必要な量の燃焼用ガスを、人手に依らずまた制御装置を設ける事もなく、自動的に吹込む構造に設けられている。つまり、燃焼用ガス吹込ノズルBは、コークス炭化炉1が石炭粒子2の乾留初期あるいは乾留反応が進んで高温度の熱を保有しまたは比較的に高い圧力を保有する場合は、多量の炉内発生ガスがコークス炭化炉1から炉内ガス流通ボックス9に流れ込んで燃焼用ガスノズルパイプ18のノズル15側も高圧化するため、燃焼用ガスノズルパイプ18の燃焼用ガス供給源から任意な圧力で供給される燃焼用ガスのガス流通路16を下開き閉塞板17で閉塞(実線で示す如く)する作動をし、同時に燃焼用ガスノズルパイプ18のノズル15側とシリンダー19を接続するガス流通パイプ23内を流動する炉内発生ガスの高い圧力でシリンダー19の滑栓板20とロッド21さらに揺動連結桿22を介して下開き閉塞板17を閉塞する。その反対に石炭粒子2の乾留時間の経過に炉内発生ガスが低圧化し始めると、炉内発生ガスの下開き閉塞板17の閉塞力もまたシリンダー19の閉塞力も弱められ、下開き閉塞板17が開放され易くなる。さらに炉内発生ガスの圧力が下がって燃焼用ガスの供給圧力よりも低圧化すると下開き閉塞板17が開放され、燃焼用ガスが、ノズル15から炉内ガス流通ボックス9に吹込まれる。本発明における下開き閉塞板17の開閉動作については、燃焼用ガスノズルパイプ18に流される燃焼用ガス供給源の供給圧力、あるいはコークス炭化炉1の炉内圧変化と燃焼用ガス供給圧力のバランスを考慮する事によって調整する事ができる。
この様にコークス炭化炉1から炉内ガス流通ボックス9に流れ込んだ炉内発生ガスの圧力に適合した量の燃焼用ガスを自動調整しつつ供給する事によって、流通ボックス9内の炉内発生ガスを燃焼させるに必要な量の燃焼用ガスを供給する事によって効率的に燃焼させ、その燃焼熱を利用してコークス炉蓋近傍に装入された石炭粒子2を有効的に加熱しようとするものである。
また上記した燃焼用ガス吹込ノズルBをガスバーナノズルとして使用する場合も、同様の作動が行われる。
【0011】
【発明の効果】
以上述べた様な構造の本発明のコークス炉蓋によれば、コークス炭化炉の中央部に装入された石炭粒子はコークス炭化炉の両側に設けた加熱炉で加熱される。また炉蓋側に装入された石炭粒子は、コークス炭化炉の中央部から炉内ガス流通ボックスに流動する高温度の熱を保有する炉内発生ガス、該流通ボックス内で流れ込んだ炉内発生ガスさらには自動的に供給される燃焼性ガスと混合して燃焼する高温度の燃焼熱を利用して昇温し、加熱し、乾留速度を速める効果を奏する。さらに乾留速度の促進効果から、不良コークスの発生量を著しく削減し、タールの発生と付着を少なくするなど、コークスの製造において多くの利点も有する。
【図面の簡単な説明】
【図1】本発明の一実施例で、炉高方向の断面図を示す。
【図2】本発明における燃焼用ガス吹込ノズルの拡大断面図を示す。
【符号の説明】
A コークス炭化炉蓋
B 燃焼用ガス吹付ノズル
9 炉内ガス流通ボックス
14 燃焼用ガス供給パイプ
15 ノズル
16 ガス流通路
17 下開き閉塞板
18 燃焼用ガスノズルパイプ
19 シリンダー
20 滑栓板
21 ロッド
22 揺動連結桿
23 ガス流通パイプ
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention promotes a rise in the temperature of coal particles charged in the vicinity of a furnace lid of a coke carbonization furnace when carbonizing coal particles to produce coke in a coke carbonization chamber (furnace), thereby reducing defective coke. The present invention relates to a coke oven cover, which is intended to be used.
[0002]
[Prior art]
The coke is made by steaming the coal particles charged into the coke carbonization furnace with high-temperature heat radiated from the heating chambers (furnace) adjacent to both sides of the coke carbonization furnace while shutting off the air, and the volatile components of the coal are removed. Manufactured with removal. There are many types of coke ovens, such as a multi-stage combustion type Karlstil oven, a waste gas circulation type Coppers oven, and an Otto oven with two heat storage chambers below the coke carbonization oven. Has been put to practical use. Some of them operate large coke production equipment with a furnace height of more than 7 m to produce a large amount of coke. However, since the coal particles charged into the coke carbonization furnace are naturally filled in large quantities due to the improvement in productivity, the firing range from the heating furnace is not uniform in the coke carbonization furnace. The carbonization time varied. In particular, at the both ends in the furnace length direction on the extruder side and the fire extinguishing car side of the coke oven, that is, near the furnace lid on the entrance and exit side of the coke carbonization furnace, the burning power is poor, and the carbonization temperature is not reached. There were many manufacturing problems. In order to solve this problem, measures have been taken to improve the dry distillation efficiency by ensuring the air permeability by sizing the coal particles. However, also in this means, in the vicinity of the furnace lid, high-temperature heat for heating coke to the carbonization temperature is absorbed by refractory bricks of about 400 mm thickness protruding into the coke carbonization furnace, so that the temperature is still low and defective coke Production had not been eliminated.
[0003]
Due to these problems, many types of coke oven lid improvement measures are being considered to date. One of them is a coke door described in Japanese Patent Publication No. 3-40074 (filed in 1980). The publication states, "The hot gas generated from the charge is sent to a flue gas through a vertical passage in a door that separates from the coke carbonization chamber by a thermally conductive metal bulkhead of one door in contact with the charge, At that time, a part of the heat of the gas is transferred by the rise of the gas in the passage and the heat conductive partition wall, thereby completely coking the charge. " That is, an object of the present invention is to provide a thermally conductive coke oven lid in which a passage of a thermally conductive metal wall or a gas collecting chamber is provided on the coke carbonization furnace side of the coke oven lid. A coke oven lid of this type is introduced in many publications such as Japanese Utility Model Publication No. 2-26913 and Japanese Patent Publication No. 5-71074. Japanese Patent Application Laid-Open No. Hei 7-258943 discloses a heating method in which an air inlet pipe is disposed in a double seal space between a coke carbonization furnace lid and a furnace lid frame, and a burner is disposed in the furnace lid space from the double seal space. "Coke oven lid" and Japanese Patent Publication No. 5-38,795 disclose that "a gas space was provided between a hot coal plate or an end face of a charged coal layer or a coke layer in a coke carbonization furnace and was generated during carbonization. A method for promoting dry distillation of a coke oven kiln, in which a part of the combustible gas is burned by air or oxygen blown from a nozzle and the gas space is maintained at 700 to 850 ° C.
By improving the coke oven lid to a heating structure in this way, the coal particles charged in the vicinity of the coke oven lid of the coke carbonization furnace are heated, the carbonization efficiency is increased, and the coke production rate is also improved. However, the heating type coke oven lid developed so as to exhibit such an effect has not yet been put to practical use.
[0004]
[Problems to be solved by the invention]
The present inventors have pursued the cause of the problem that the coke oven lid having the heating structure as described above is not put into practical use, and also attempted to reduce the defective coke in the vicinity of the oven lid of the coke carbonization furnace to improve productivity. The improved heating structure of the coke oven lid was studied. As a result, according to the present inventors' estimation, the conventional heating structure of the coke oven lid converts the flammable gas from a high pressure immediately after the start of the carbonization to a carbonization time which seems to affect the volume increase due to the combustion of the coal particles. Because it is a method of constantly blowing a certain amount of flammable gas from the nozzle into the heat conductive metal partition chamber or gas space chamber, instead of blowing it while responding to the situation change of the internal pressure of the coke carbonization furnace that gradually reduces pressure, There is a problem that a large amount of combustible gas is used. In addition, providing a nozzle connected to a combustible gas supply control device in the coke oven lid of all the coke ovens has a problem in that the production cost of the coke production device increases and the coke production cost increases. Even if such a nozzle is provided, fine adjustment control of the supply amount of combustible gas for each coke oven lid and according to the carbonization time is a task in which coal particles are scattered at high temperatures and around the furnace body. Many problems may have been caused, such as being perceived as troublesome tasks in the environment.
[0005]
The present inventors have conducted various studies on the structure of a combustion gas injection nozzle or a gas burner in order to solve such a problem and to provide a coke oven lid that promotes temperature rise near a coke carbonization furnace lid. As a result, in the furnace gas flow box provided on the coke carbonization furnace side of the coke oven lid, combustion gas injection in which the lower opening plate of the combustible gas nozzle automatically opens and closes in response to the pressure change in the box. By providing the nozzle, the object of the present invention could be achieved.
[0006]
[Means for Solving the Problems]
The gist of the present invention that has achieved the above objects is that a coke carbonization furnace lid provided with an in-furnace gas distribution box on the coke carbonization furnace side, a nozzle provided on one side directed toward the in-furnace gas distribution box side, and a combustion on the other side A gas nozzle pipe is provided in the gas flow passage of the combustion gas supply pipe connected to the gas supply source. The lower opening closing plate is operably connected to a rod fixed to the coke carbonizing furnace side of a retractable sliding plate sliding on the side of the arranged cylinder through a swinging connecting rod, and the nozzle and the lower opening closing are connected. A coke oven lid for heating the oven lid side of a coke carbonization furnace equipped with a combustion gas injection nozzle formed by connecting the combustion gas nozzle pipe between the plates and the cylinder lid side of the cylinder with a gas distribution pipe A.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a sectional view of a furnace height direction according to an embodiment of the present invention. FIG. 2 is an enlarged sectional view of the combustion gas injection nozzle (or gas burner) according to the present invention. In FIG. 1, reference numeral 1 denotes a coke carbonization furnace of a coke oven. Reference numeral 2 denotes coal particles charged in the coke carbonization furnace 1. That is, the coal particles 2 are carbonized by high-temperature heat released from a heating furnace provided adjacent to both sides of the coke carbonization furnace 1. A is a coke carbonization furnace lid having a pressure fastening structure. A coke carbonization furnace lid A is a knife edge cross-sectional flange member 5 provided on the outer periphery of a frame 4 of a structure for pressing and fastening the furnace opening frame 3 on the coke extruder side or the coke kiln exit side of the coke carbonization furnace 1. And an expansion / contraction drive member 6 capable of pressing the flange member 5 to open and close the entrance 8 via a heat-resistant metal seal plate 7. That is, the coke carbonization furnace lid A is assembled in a normal opening / closing structure for closing the entrance 8 of the coke carbonization furnace 1 in an airtight manner. Reference numeral 9 denotes an in-furnace gas distribution box provided on the coke carbonization furnace 1 side of the coke carbonization furnace lid A. The in-furnace gas distribution box 9 is for inflow and distribution of in-furnace generated gas generated when the coal particles 2 charged in the coke carbonization furnace 1 are carbonized. The furnace height direction is divided into a plurality of stages. A rectangular plate 11 made of a heat-resistant metal for shielding the intrusion of coal particles 2 into a horizontal support frame 10 provided at a position where a small ventilation gap (or ventilation hole) is provided on the left and right sides, with a bottom or no bottom. The upper end portion is provided with an exhaust hole (not shown) connected to the top plate 12 or an exhaust pipe (not shown), and is provided to the coke carbonization furnace lid A via the heat insulating box 13 and the seal plate 7. Fixed. In the present invention, the in-furnace gas distribution box 9 may be an in-furnace gas distribution box in which an in-furnace gas inflow hole is formed at an arbitrary number and a position on the wall surface of the heat-resistant box member, in addition to the structure as illustrated. The structure is not particularly limited. B is a combustion gas injection nozzle.
[0008]
As for the combustion gas injection nozzle B, as shown in detail in FIG. 2, one side of the combustion gas supply pipe 14 is provided with a nozzle 15 directed toward the furnace gas distribution box 9, and the other side is provided with air. A gas nozzle for combustion, in which a lower opening / closing plate 17 which is openable and closable from a nozzle 15 side is provided in a gas flow passage 16 connected to a gas supply source for combustion such as a fuel gas (not shown) in addition to oxygen gas. A pipe 18 is provided, and a plunging plate 20 that slides inside a cylinder 19 disposed on the outermost upper side of the combustion gas nozzle pipe 18 is swung by a retractable rod 21 fixed to the coke carbonizing furnace 1 side. The lower opening closing plate 17 is pivotally connected via a moving connecting rod 22, and a combustion gas nozzle pipe 18 between the nozzle 15 and the lower opening closing plate 17 and a furnace lid side of the cylinder 19 are connected to a gas flow pipe. Which are connected by three. FIG. 2 shows a drive mechanism of a lower opening closing plate 17 which can be opened and closed freely. A rod 21 fixed to a stopper plate 20 of a cylinder 19 and a swing connection rod 22 for opening and closing the lower opening closing plate 17 are shown. Both members are provided in a structure in which the members are connected by a connection shaft 24 that freely passes through a long hole 25 for a travel guide formed in the longitudinal direction of the swing connection rod 22. In other words, the swinging connecting rod 22 tilts in conjunction with the forward / backward movement of the rod 21, and the tilting operation of the swinging connecting rod 22 serves as a drive source for opening and closing the lowering closing plate 17. The opening and closing plate 17 is opened and closed each time it moves to the position and, conversely, moves from the two-dot chain line to the solid line.
In the present invention, when the combustion gas injection nozzle B is used as a gas burner nozzle, an ignition device may be provided near the nozzle 15. Reference numeral 26 denotes a gantry (or a support) on which the cylinder 19 is mounted and fixed at the uppermost position on the outer periphery of the combustion gas nozzle pipe 18.
[0009]
In the coke oven lid of the present invention configured as described above, the entrance 8 of the coke carbonization furnace 1 is closed with the coke carbonization furnace lid A via the seal plate 7 as in the conventional coke operation. Thereafter, the coal particles 2 are charged into the coke carbonization furnace 1. The coal particles 2 charged in the coke carbonization furnace 1 are transformed into coke while being carbonized by the high-temperature heat radiated from the adjacent heating furnace. The gas generated in the furnace having high-temperature heat generated from the coal particles 2 charged in the central part of the coke carbonization furnace 1 flows into the furnace gas distribution box 9 while the coal particles in the vicinity of the furnace lid are discharged. 2 flows into the in-furnace gas distribution box 9 from the ventilation gap of the in-furnace gas distribution box 9 while heating. The in-furnace generated gas which has flowed into the in-furnace gas distribution box 9 heats the coal particles 2 in the vicinity of the furnace lid by the heat of conduction while heating the walls of the in-furnace gas distribution box 9 to raise the temperature.
[0010]
However, as described above, the change in the internal pressure of the coke carbonization furnace 1 immediately after the carbonization is increased due to the volume increase due to the combustion of the coal particles 2 charged in the coke carbonization furnace 1, and the pressure is gradually reduced as the carbonization time elapses. I do. The combustion gas injection nozzle B according to the present invention is provided with a structure for automatically injecting a required amount of combustion gas following the change without manual operation and without providing a control device. In other words, when the coke carbonization furnace 1 holds high-temperature heat or has a relatively high pressure when the coke carbonization furnace 1 is at the beginning of the carbonization of the coal particles 2 or the carbonization reaction proceeds, the combustion gas injection nozzle B has a large amount of gas inside the furnace. Since the generated gas flows from the coke carbonization furnace 1 into the in-furnace gas distribution box 9 and also increases the pressure on the nozzle 15 side of the combustion gas nozzle pipe 18, the generated gas is supplied at an arbitrary pressure from the combustion gas supply source of the combustion gas nozzle pipe 18. The gas flow passage 16 for the combustion gas is opened downward and closed by a closing plate 17 (as indicated by a solid line), and at the same time, the inside of a gas flow pipe 23 connecting the nozzle 15 side of the combustion gas nozzle pipe 18 and the cylinder 19 is moved. With the high pressure of the generated gas flowing in the furnace, the lower opening plate 17 is closed via the stopper plate 20 and the rod 21 of the cylinder 19 and the swing connection rod 22. Conversely, when the pressure of the gas generated in the furnace begins to decrease during the elapse of the carbonization time of the coal particles 2, the closing force of the lower opening plate 17 and the closing force of the cylinder 19 of the gas generated in the furnace are weakened, and the lower opening plate 17 It is easy to open. Further, when the pressure of the gas generated in the furnace decreases to become lower than the supply pressure of the combustion gas, the lower opening plate 17 is opened, and the combustion gas is blown from the nozzle 15 into the furnace gas distribution box 9. Regarding the opening / closing operation of the lower opening closing plate 17 in the present invention, the supply pressure of the combustion gas supply source flowing through the combustion gas nozzle pipe 18 or the balance between the internal pressure change of the coke carbonization furnace 1 and the combustion gas supply pressure is considered. It can be adjusted by doing.
In this way, by automatically adjusting and supplying the amount of combustion gas that matches the pressure of the in-furnace generated gas flowing into the in-furnace gas distribution box 9 from the coke carbonization furnace 1, the in-furnace generated gas in the distribution box 9 is supplied. That burns efficiently by supplying the necessary amount of combustion gas to burn the coal, and uses the combustion heat to effectively heat the coal particles 2 charged near the coke oven lid It is.
The same operation is performed when the above-described combustion gas injection nozzle B is used as a gas burner nozzle.
[0011]
【The invention's effect】
According to the coke oven lid of the present invention having the above-described structure, the coal particles charged in the central portion of the coke carbonization furnace are heated by the heating furnaces provided on both sides of the coke carbonization furnace. In addition, the coal particles charged into the furnace lid side generate gas in the furnace holding high-temperature heat flowing from the central part of the coke carbonization furnace to the gas flow box in the furnace, and the gas generated in the furnace flowing into the flow box. The effect of increasing the temperature, heating and utilizing the high-temperature combustion heat of mixing and burning the gas and the automatically supplied combustible gas is effective. Further, from the effect of accelerating the carbonization rate, there are many advantages in the production of coke, such as significantly reducing the amount of defective coke and reducing the generation and adhesion of tar.
[Brief description of the drawings]
FIG. 1 is a sectional view in a furnace height direction according to an embodiment of the present invention.
FIG. 2 is an enlarged sectional view of a combustion gas injection nozzle according to the present invention.
[Explanation of symbols]
A coke carbonization furnace lid B combustion gas spray nozzle 9 furnace gas distribution box 14 combustion gas supply pipe 15 nozzle 16 gas flow passage 17 bottom open closing plate 18 combustion gas nozzle pipe 19 cylinder 20 stopper plate 21 rod 22 swing Connecting rod 23 Gas distribution pipe

Claims (1)

コークス炭化炉側に炉内ガス流通ボックス(9)を設けたコークス炭化炉蓋(A)に、一側は炉内ガス流通ボックス(9)側に指向するノズル(15)を設け他側は燃焼用ガス供給源に連接した燃焼用ガス供給パイプ(14)のガス流通路(16)にノズル(15)側から遮断する開閉自在な下開き閉塞板(17)を内設した燃焼用ガスノズルパイプ(18)を設けまた該燃焼用ガスノズルパイプ(18)の外周最上側に配置したシリンダー(19)の内部を摺動する進退自在な滑栓板(20)のコークス炭化炉側に固定したロッド(21)に揺動連結桿(22)を介して前記下開き閉塞板(17)を枢動開閉自在に連結すると共にノズル(15)と下開き閉塞板(17)の間の燃焼用ガスノズルパイプ(18)とシリンダー(19)の炉蓋側とをガス流通パイプ(23)で接続して構成する燃焼用ガス吹込ノズル(B)を設けた事を特徴とするコークス炭化炉の炉蓋側を加熱するコークス炉蓋。On the coke carbonization furnace lid (A) provided with the in-furnace gas distribution box (9) on the coke carbonization furnace side, one side is provided with a nozzle (15) directed toward the in-furnace gas distribution box (9), and the other side is burned. Gas pipe (14) connected to a gas supply source for combustion, a gas pipe (14) for combustion having a lower opening plate (17) openable and closable to shut off from the nozzle (15) side. And a rod (21) fixed to the coke carbonization furnace side of a retractable plug plate (20) that slides inside a cylinder (19) disposed on the outermost upper side of the combustion gas nozzle pipe (18). ) Via a swinging connecting rod (22), the lower opening closing plate (17) is pivotally openable and closable, and a combustion gas nozzle pipe (18) between the nozzle (15) and the lower opening closing plate (17). ) And furnace lid of cylinder (19) Coke oven lid preparative heating the furnace lid side of the coke carbonizing furnace, characterized in that a combustion gas injection nozzle configured by connecting (B) in the gas flow pipe (23).
JP2002267396A 2002-06-13 2002-08-09 Coke oven cover heating oven cover side of coke carbonization oven Pending JP2004075965A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP2002267396A JP2004075965A (en) 2002-08-09 2002-08-09 Coke oven cover heating oven cover side of coke carbonization oven
US10/519,509 US7341647B2 (en) 2002-06-13 2003-06-12 Coke carbonization furnace cover for promoting increase in temperature of coal particles near the cover
EP03764117A EP1533357A1 (en) 2002-06-13 2003-06-12 Coke carbonization furnace cover for promoting increase in temperature of coal particles near the cover
KR1020047020123A KR100649069B1 (en) 2002-06-13 2003-06-12 Coke carbonization furnace cover for promoting increase in temperature of coal particles near the cover
PCT/JP2003/007480 WO2004007639A1 (en) 2002-06-13 2003-06-12 Coke carbonization furnace cover for promoting increase in temperature of coal particles near the cover
PL03373157A PL373157A1 (en) 2002-06-13 2003-06-12 Coke carbonization furnace cover for promoting increase in temperature of coal particles near the cover
CA002489081A CA2489081A1 (en) 2002-06-13 2003-06-12 Coke oven doors for promoting temperature increase in the vicinity thereof
CNB038137569A CN100352891C (en) 2002-06-13 2003-06-12 Coke carbonization furnace cover for promoting increase in temperature of coal particles near the cover
AU2003244118A AU2003244118A1 (en) 2002-06-13 2003-06-12 Coke carbonization furnace cover for promoting increase in temperature of coal particles near the cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002267396A JP2004075965A (en) 2002-08-09 2002-08-09 Coke oven cover heating oven cover side of coke carbonization oven

Publications (1)

Publication Number Publication Date
JP2004075965A true JP2004075965A (en) 2004-03-11

Family

ID=32024753

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002267396A Pending JP2004075965A (en) 2002-06-13 2002-08-09 Coke oven cover heating oven cover side of coke carbonization oven

Country Status (1)

Country Link
JP (1) JP2004075965A (en)

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