【０００１】
【発明の属する技術分野】
本発明は、石炭を乾留してコークスを製造するコークス炭化室（炉）の出入口を閉塞してシール性を確保し、耐欠損性と保熱性に優れたコークス炭化炉蓋に関するものである。
【０００２】
【従来の技術】
装入された石炭粒子を乾留しながらコークスを製造するコークス炭化炉の前後の出入口を開閉するコークス炭化炉蓋は、石炭粒子を９００℃以上の高い乾留温度に加熱する製造条件と地球環境保全の問題から、乾留中の石炭粒子から発生する粉塵の飛散を防止し、ＣＯやＣＨ４など汚染ガスのリークを防止したガスシール性の高いコークス炉蓋が開発され使用されている。例えば実開平５−５６９４０号公報、実開平７−３８１５６号公報、特開２００１−２８８４７２号公報 その他多くの特許公報で紹介される様に「コークス炭化炉の出入口を開閉する頑丈な鋼鉄製フレーム体に組立てられた炉蓋構造体のコークス炭化炉側に、該出入口を閉塞するシールプレートを介してコークス炭化炉に進入する厚さ４００ｍｍ程度の大きなブロック状の粘土質または溶融石英質を使用した炉蓋煉瓦を内張りすると共に、該シールプレートの周辺部に該コークス炭化炉の炉口枠を押圧するナイフエッジ断面形状のフランジ部材を設けて炉内シール性を高めた構造のコークス炭化炉蓋」で、炉内シール性が高いため、粉塵の飛散や汚染ガスのリークを防止し、しかもコークス炭化炉内を高温度に保持しつつ不良コークスの発生を著しく軽減する効果も有する。
また特開１１−８０７３８号公報で開示される様に、石炭粒子から発生したタールやカーボンや粉塵が炉蓋煉瓦に付着しにくく、例え付着してもジェット噴射式クリーニングで簡単に掻き落とし易い炉蓋として「炉体煉瓦の全表面を、滑らかな金属板で覆ったコークス用炉蓋」も開発されている。
【０００３】
【特許文献１】
実開平５−５６９４０号公報（第２頁 図１）
【特許文献２】
実開平７−３８１５６号公報（第４頁 図１）
【特許文献３】
特開２００１−２８８４７２号公報（第５頁 図３）
【特許文献４】
特開平１１−８０７３８号公報（第２頁 図２）
【０００４】
【発明が解決しようとする課題】
しかしながら、前述した実開平５−５６９４０号公報ら前者３件の特許公報に掲載された図面から明らかな様に、今日まで開発され使用されるコークス炭化炉蓋は、炉蓋構造体に内張りされた剥き出しの厚い炉蓋煉瓦表面が、コークスを窯出しする毎に乾留コークス層から崩れ落ちるコークスの強い衝撃を受けて摩耗しまた欠落し、保温性が損なわれる問題があった。また炉蓋煉瓦とコークス炭化炉出入口近傍の炉壁面との間に設けられた僅か３０ｍｍ程度の狭隘な隙間は、コークス炭化炉蓋の開閉作業時に炉蓋煉瓦がコークス炭化炉壁を擦り合う事なくスムーズに開閉する誘導空間でありまたコークス炭化炉で発生した排ガスの排気路でもあるが、コークス炭化炉に装入した石炭粒子から発生するガスや粉塵から変成し固く堆積したタールの障害で、コークス炭化炉蓋の開閉作業の際に炉蓋煉瓦の一部を欠落させる事もあった。この様な原因によって、炉蓋煉瓦の一部を大きく欠落したコークス炭化炉蓋は高温度の熱を放出して保温性を劣化する。さらに熱の放出路を形成した炉蓋煉瓦は、コークスの窯出し毎に繰り返される過酷な急熱急冷の熱サイクルの影響を受けて奥部へと亀裂を伝播し、延いては炉蓋構造体を歪に変形させる問題もあった。こうした問題を解消するために、前述した特開平１−８０７３８号公報の様に炉蓋煉瓦の全表面をステンレス板の如き金属板で覆う事は、有用な手段ではあるが、その皮面ではコークス窯出し毎に繰り返される急熱急冷（膨脹と収縮）の熱サイクルを受けて金属板自体が歪に変化する形状で炉蓋煉瓦あるいはその近傍の炉壁煉瓦が早い時期に破損（次落）するため、金属板の取替作業を頻繁に行わねばならない問題があった。
【０００５】
また欠落した炉蓋煉瓦の破片を混入して窯出しされたコークスは、耐火煉瓦を取除く選別作業を行わなければならない問題もあった。炉蓋煉瓦を大きく欠落したコークス炭化炉蓋は、コークス炭化炉から取り外し別の作業場所へ移動させた後、炉蓋煉瓦を補修するかあるいは新品に取替えて再使用する状況にあった。また過酷な熱影響を受けて歪に変形した炉蓋構造体は、シール性を損ない火災や公害など二次的災害を引き起こす問題から、早い時期に補修しあるいは新品に取替える事もしばしばあった。この様な問題の発生で、使用寿命期限に達しないコークス炭化炉蓋に補修作業や取替作業を行う事は、コークス生産コストを間接的に高める理由から解消しなければならない問題であった。
【０００６】
本発明者らは、コークス生産作業において起こる上記の様な問題を解消したコークス炭化炉蓋を提供する事を目的に色々な思案と試作で検討した結果、従来から使用される単一部材の炉蓋煉瓦に代わって、耐熱金属の短冊板で形成した有底空間室に不定形耐火物または耐火煉瓦あるいは耐火煉瓦の周囲を不定形耐火物で被覆した複合耐火物の炉蓋耐火物を装填した耐火物装填金属壁面部材の内張構造体を設ける事によって炉蓋本来のシール性を確保し、耐欠損性と保熱性に優れた使用寿命の長いコークス炭化炉蓋を提供するに至った。
【０００７】
【課題を解決するための手段】
本発明は上記目的を達成したもので、その要旨は、石炭粒子を装入するコークス炭化炉の炉口枠を押圧するシールプレートを介して該コークス炭化炉の出入口を開閉する炉蓋構造体のコークス炭化炉側に、断熱ボックスを設け、さらに該断熱ボックスの炉高方向を複数段に分割する位置に横体支持枠を設けると共に、該横体支持枠の上下離隔間に膨張用間隙を介して縦横に耐熱金属短冊板を着脱自在に並列した有底空間室に不定形耐火物または耐火煉瓦あるいは耐火煉瓦の周囲を不定形耐火物で被覆した複合耐火物の炉蓋耐火物を装填した耐火物装填金属壁面部材を設けて構成した耐欠損性と保熱性に優れたコークス炭化炉蓋である。
【０００８】
【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。
図面は、本発明を判り易く説明するために掲載した一実施例を示す。図１は、コークス炭化炉の出入口を閉塞した場合のコークス炭化炉蓋の縦断面図を示す。図１において、１は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。３は、炉蓋構造体である。炉蓋構造体３は、炉蓋フレーム部材とフランジ部材で補強した鋼鉄製の枠体フレーム４で、コークス炭化炉１の炉口枠５に押圧する薄肉のシートプレート６を介して、コークス炭化炉１のコークス押出機側またはコークス窯出側の出入口７を開閉する構造に組立てられている。８は閂である。閂８は、枠体フレーム４をコークス炭化炉１の出入口７に強く押圧し締結するもので、圧縮バネや螺子ボルトなどの締結用部材を組合わせて構成されている。またシールプレート６の周縁部にはナイフエッジ断面形状のフランジ部材９を接合すると共に、枠体フレーム４には該フランジ部材９を炉口枠側に押圧するシリンダーやバネなどを使用した進退自在な押圧治具１０が設けられている。すなわち、本発明における炉蓋構造体３は、前記した特開２００１−２８８４７２号公報に掲載された図面と同様に、コークス炭化炉１の出入口７を開閉しかつ閉塞する締結構造に組立てられている。
【０００９】
１１は、断熱ボックスである。断熱ボックス１１は、金属製の耐熱ボックス１２にアルミナシリケート、カーボンウッド、セラミック材など一般に使用される断熱効果の高い耐火断熱材１３を充填したももので、シートプレート６を介して炉蓋構造体３に、あるいはさらに炉内プレートとシールプレートあるいはさらにスライドプレート必要によっては耐熱性パッキングシートを介して炉蓋構造体３に設けられている。図１は、多重段の断熱ボックス１１を炉内プレート１４、シールプレート６、スライドプレート１５を介して炉蓋構造体３に取付けた場合の一実施例を示す。すなわち、断熱ボックス１１は、シールプレート６を熱から防護すると共に、炉蓋構造体３から放出される熱を防止し、コークス炭化炉１の炉蓋側を流通する炉内発生ガスの保熱性を高く維持する作用効果を奏する。
【００１０】
さらに本発明においては、上記の様な構造に組立てられた炉蓋構造体３のコークス炭化炉側に、断熱ボックス１１を介して、耐火物装填金属壁部材１６を設けている。耐火物装填金属壁面部材１６は、断熱ボックス１１の炉高方向を複数段に分割する位置に、図２で示す様な袋状や筒状などの抱形状やその他任意な形の中空形状に成形しかつ石炭粒子２の押圧やその他の外圧に変形する事のない耐熱金属材料の横体支持枠１７を該断熱ボックス１１に取付けると共に、該横体支持枠１７の上下離隔間に膨張用間隙１８を介して耐熱金属短冊板１９を縦横に着脱自在に並列して設けた有底空間室２０に、不定形耐火物を装填したりまたは耐火煉瓦あるいは耐火煉瓦の周囲に不定形耐火物で被覆した複合耐火物などの炉蓋耐火物２１を装填したものである。膨張用間隙１８は、石炭粒子２の乾留温度の上昇に追従して変化する耐熱金属短冊板１９の膨脹が隣接する他の耐熱金属短冊板に影響しない様に防ぎ止める膨脹弊害防止用の間隙であって、耐火物装填金属壁面部材１６の初期形状を長期間にわたって維持する作用効果を奏する。耐火物装填金属壁面部材１６に装填される炉蓋耐火物２１はシャモット質、蝋石質、珪石質や高アルミナ質などの材質に限定されるものでなく、多くの種類の耐火物材料に流動性や粘結性を付与した不定形耐火物材料あるいはこれをブロック状に成形し乾燥した耐火煉瓦で、しかも該空間室２０の有底構造によって安定に保持される。また有底空間室２０を形成する耐熱金属短冊板１９は、横体支持枠１７に固定してもよく、使用に耐えられなくなった耐熱金属短冊板１９のみを取替え易い様に個々を着脱自在な係合手段で並列してもよい。図２は、耐熱金属短冊板１９が膨張または収縮する際に変化するサイズに対応できる様に、遊嵌孔を介して、ボルト２２で締結した場合の一実施例を示す。なお、耐熱金属短冊板１９に供される材質は、耐熱鋼やステンレス鋼などの特殊鋼や鋳鉄の他に耐熱性を有する金属であれば何でもよく、その大きさや厚みについても、特に限定するものでない。すなわち、炉蓋耐火物２１は、該炉蓋耐火物２１の周囲を保護する様に耐熱金属短冊板１９で包み込んだ耐火物装填金属壁面部材１６によって、コークス窯出し時に崩れ落ちるコークスの強い衝撃を直接受ける事がないため、摩耗や欠落する事もなく耐欠損性が保持されると共に、コークス炭化炉蓋自体が窯出し作業中の大気中に放置されても極度に降温する事なく高温度の熱を保有するため、次作業でコークス炭化炉１の炉蓋付近に装入された石炭粒子の加熱を速める効果を有する。
【００１１】
上記の様に構成されたコークス炭化炉蓋は、炉蓋構造体３に断熱ボックス１１を介して取付けた耐熱金属短冊板１９の有底空間室２０に炉蓋耐火物２１を装填し、あるいは耐熱金属短冊板１９の取付けと炉蓋耐火物２１の装填を交互に繰り返しながら耐火物装填金属壁面部材１６に形成した後、炉蓋耐火物２１に不定形耐火物を使用した場合は充分に乾燥してから、コークス炭化炉蓋に供される。
【００１２】
【発明の効果】
以上述べた様な本発明のコークス炭化炉蓋によれば、耐火物装填金属壁面部材によって、コークス窯出し毎に崩れ落ちるコークスの衝突で不定形耐火物や耐火煉瓦などの炉蓋耐火物が崩れ落ちる事がないため、炉蓋耐火物欠損部分の補修を行う必要がなく、長期間使用できる特長がある。また耐火物装填金属壁面部材が着脱自在な個々の耐熱金属短冊板によって構成されているため、何かの原因や障害で著しく変形あるいは損傷した場合でもその個所の耐熱金属短冊板のみを簡単に取替える事で、直ちに次作業が開始できる。しかも取替られた耐熱金属短冊板は、切削加工や矯正加工を施す事によってリサイクルできる特長がある。さらにコークス窯出し作業中にコークス炭化炉蓋が大気中に長い時間放置されても、断熱ボックスと耐熱金属短冊板の保熱効果によって炉蓋耐火物が保有する高温度の熱の大放出が避けられるため、閉塞直後からコークス炭化炉に装入された石炭粒子を加熱し始め、タールの発生を著しく低減する効果を有するなど、多くの特長や効果がある。
【図面の簡単な説明】
【図１】本発明の一実施例で、コークス炭化炉蓋炉高方向の縦断面図を示す。
【図２】本発明のコークス炭化炉蓋の横断面図を示す。
【符号の説明】
１ コークス炭化炉
２ 石炭粒子
３ 炉蓋構造体
５ 炉口枠
６ シートプレート
７ 出入口
１１ 断熱ボックス
１６ 耐火物装填金属壁面部材
１７ 横体支持枠
１８ 膨張用間隙
１９ 耐熱金属短冊板
２０ 有底空間室
２１ 炉蓋耐火物[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a coke carbonization furnace lid that secures sealing performance by closing the entrance and exit of a coke carbonization chamber (furnace) that carbonizes coal to produce coke, and that is excellent in chipping resistance and heat retention.
[0002]
[Prior art]
The coke carbonization furnace lid, which opens and closes the front and rear entrances of the coke carbonization furnace that produces coke while carbonizing the charged coal particles, is used to heat coal particles to a high carbonization temperature of 900 ° C or higher. Due to the problem, a coke oven lid having a high gas sealing property, which prevents scattering of dust generated from coal particles during carbonization and prevents leakage of contaminant gases such as CO and CH 4, has been developed and used. For example, as disclosed in Japanese Utility Model Laid-Open No. 5-56940, Japanese Utility Model Laid-Open No. 7-38156, Japanese Unexamined Patent Application Publication No. 2001-288472 and many other patent publications, "a sturdy steel frame body for opening and closing the inlet and outlet of a coke carbonization furnace. A furnace using a large block-shaped clay or fused quartz having a thickness of about 400 mm that enters the coke carbonization furnace through a seal plate closing the entrance and exit on the coke carbonization furnace side of the furnace lid structure assembled in A coke carbonization furnace lid with a structure in which a lid brick is lined and a flange member having a knife-edge cross-sectional shape that presses the furnace opening frame of the coke carbonization furnace is provided in the periphery of the seal plate to improve the furnace inner sealability. The high sealing performance inside the furnace prevents dust scattering and leakage of contaminated gas, and also generates defective coke while maintaining the inside of the coke carbonization furnace at a high temperature. Is also significantly reduced.
Further, as disclosed in Japanese Patent Application Laid-Open No. 11-80738, a tar, carbon or dust generated from coal particles hardly adheres to a furnace lid brick, and even if it adheres, a furnace which is easily scraped off by jet injection cleaning. As a lid, a "coke furnace lid in which the entire surface of the furnace brick is covered with a smooth metal plate" has also been developed.
[0003]
[Patent Document 1]
Japanese Utility Model Laid-Open No. 5-56940 (FIG. 1 on page 2)
[Patent Document 2]
Japanese Utility Model Laid-Open No. 7-38156 (FIG. 1 on page 4)
[Patent Document 3]
JP 2001-288472 A (Page 5 FIG. 3)
[Patent Document 4]
JP-A-11-80738 (FIG. 2 on page 2)
[0004]
[Problems to be solved by the invention]
However, as is apparent from the drawings described in the former three patent publications such as the above-mentioned Japanese Utility Model Publication No. 5-56940, the coke carbonization furnace lid developed and used to date has been lined with a furnace lid structure. Every time the coke is kiln-fired, the exposed surface of the furnace lid brick is worn or lost due to the strong impact of the coke that collapses from the carbonized coke layer, causing a problem that heat retention is impaired. In addition, the narrow gap of only about 30 mm provided between the furnace lid brick and the furnace wall near the entrance and exit of the coke carbonization furnace prevents the furnace lid brick from rubbing the coke carbonization furnace wall when opening and closing the coke carbonization furnace lid. It is an induction space that opens and closes smoothly, and it is also an exhaust path for exhaust gas generated in the coke carbonization furnace.However, due to the obstacle of tar that has been solidified and denatured from gas and dust generated from coal particles charged in the coke carbonization furnace, When opening and closing the carbonization furnace lid, a part of the furnace lid brick was sometimes missing. Due to such a cause, the coke carbonization furnace lid in which a part of the furnace lid brick is largely missing emits high-temperature heat and deteriorates the heat retention. In addition, the furnace lid brick, which formed a heat release path, propagated cracks to the back under the influence of the severe rapid heat quenching thermal cycle repeated every time coke was discharged from the kiln, and eventually the furnace lid structure There was also a problem of transforming into a strain. In order to solve such a problem, it is a useful means to cover the entire surface of the furnace lid brick with a metal plate such as a stainless plate as disclosed in Japanese Patent Application Laid-Open No. 1-80738 described above. Due to the thermal cycle of rapid thermal quenching (expansion and shrinkage) that is repeated every time the furnace is put out, the furnace lid brick or the furnace wall brick near it is damaged (next fall) in a shape in which the metal plate itself changes into distortion. Therefore, there has been a problem that the work of replacing the metal plate has to be performed frequently.
[0005]
There was also a problem that the coke discharged from the kiln mixed with pieces of the missing furnace lid brick had to be sorted out to remove the refractory brick. The coke carbonization furnace lid from which the furnace lid brick was largely missing was removed from the coke carbonization furnace and moved to another work place, and then the furnace lid brick was repaired or replaced with a new one and reused. Furnace lid structures that have been deformed into strains due to severe thermal effects have often been repaired or replaced with new ones at an early stage due to problems such as loss of sealability and secondary disasters such as fire and pollution. Due to the occurrence of such a problem, performing repair work or replacement work on a coke carbonization furnace lid that has not reached the end of its useful life has been a problem that must be solved because it indirectly increases the coke production cost.
[0006]
The inventors of the present invention have studied various ideas and prototypes for the purpose of providing a coke carbonization furnace lid that has solved the above-described problems that occur in coke production work. In place of the lid brick, a refractory with a fixed refractory or a refractory brick or a composite refractory in which the periphery of the refractory brick was covered with the irregular refractory was loaded in a bottomed space formed of a heat-resistant metal strip. By providing a refractory-loaded metal wall member lining structure, the original sealing performance of the furnace lid was secured, and a long-life coke carbonization furnace lid with excellent chipping resistance and heat retention properties was provided.
[0007]
[Means for Solving the Problems]
The present invention has achieved the above object, and the gist of the present invention is to provide a furnace lid structure that opens and closes the entrance and exit of the coke carbonization furnace through a seal plate that presses a furnace opening frame of the coke carbonization furnace charged with coal particles. On the coke carbonization furnace side, an insulating box is provided, and a horizontal support frame is provided at a position where the furnace height direction of the heat insulating box is divided into a plurality of stages, and an expansion gap is provided between the upper and lower spaces of the horizontal support frame. Refractory in which a refractory with a fixed refractory or a refractory brick or a composite refractory with a refractory brick surrounding the refractory brick covered with the refractory is loaded in a bottomed space in which heat-resistant metal strips are detachably arranged vertically and horizontally. This is a coke carbonization furnace lid that is provided with a material-loaded metal wall member and has excellent fracture resistance and heat retention.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS The drawings illustrate one embodiment which is set forth in order to clearly explain the invention. FIG. 1 is a longitudinal sectional view of a coke carbonization furnace lid when the entrance of the coke carbonization furnace is closed. In FIG. 1, reference numeral 1 denotes a coke carbonization furnace. Reference numeral 2 denotes coal particles charged in the coke carbonization furnace 1. 3 is a furnace lid structure. The furnace lid structure 3 is a steel frame frame 4 reinforced with a furnace lid frame member and a flange member. The furnace lid structure 3 is pressed through a thin sheet plate 6 pressed against a furnace opening frame 5 of the coke carbonization furnace 1 through a coke carbonization furnace. It is assembled in a structure for opening and closing the entrance 7 on the side of the coke extruder or the exit of the coke oven. 8 is a bar. The bar 8 is configured to strongly press the frame body frame 4 to the entrance 7 of the coke carbonization furnace 1 and fasten the frame frame 4, and is configured by combining fastening members such as compression springs and screw bolts. A flange member 9 having a knife-edge cross-sectional shape is joined to the peripheral portion of the seal plate 6, and the frame body 4 is movable forward and backward using a cylinder or a spring for pressing the flange member 9 toward the furnace opening frame. A pressing jig 10 is provided. That is, the furnace lid structure 3 in the present invention is assembled in a fastening structure that opens and closes and closes the entrance 7 of the coke carbonization furnace 1 in the same manner as in the drawing described in JP-A-2001-288472. .
[0009]
11 is a heat insulation box. The heat-insulating box 11 is a metal heat-resistant box 12 filled with a generally used fire-resistant heat-insulating material 13 such as alumina silicate, carbon wood, ceramic material and the like, which has a high heat-insulating effect. 3, and further provided on the furnace lid structure 3 via a furnace inner plate and a seal plate or, furthermore, a heat-resistant packing sheet if necessary. FIG. 1 shows an embodiment in which a multi-stage heat insulating box 11 is attached to a furnace lid structure 3 via a furnace inner plate 14, a seal plate 6, and a slide plate 15. That is, the heat insulating box 11 protects the seal plate 6 from heat, prevents heat released from the furnace lid structure 3, and maintains heat retention of gas generated in the furnace flowing through the furnace lid side of the coke carbonization furnace 1. It has the effect of maintaining high.
[0010]
Further, in the present invention, a refractory-loaded metal wall member 16 is provided via a heat insulating box 11 on the coke carbonization furnace side of the furnace lid structure 3 assembled as described above. The refractory-loaded metal wall member 16 is formed at a position where the furnace height direction of the heat-insulating box 11 is divided into a plurality of stages, into a bag-like or cylindrical shape as shown in FIG. 2 or any other hollow shape. A horizontal support frame 17 made of a heat-resistant metal material that is not deformed due to the pressing of the coal particles 2 or other external pressure is attached to the heat insulating box 11, and an expansion gap 18 is provided between the upper and lower spaces of the horizontal support frame 17. A heat-resistant metal strip plate 19 is vertically and horizontally detachably arranged in parallel in a bottomed space chamber 20 in which a refractory material is loaded or a refractory brick or a refractory brick is covered with the refractory material. The furnace refractory 21 such as a composite refractory is loaded. The expansion gap 18 is a gap for preventing the adverse effect of expansion, which prevents the expansion of the heat-resistant metal strip 19 that changes following the rise in the carbonization temperature of the coal particles 2 from affecting other adjacent heat-resistant metal strips. Accordingly, an effect of maintaining the initial shape of the refractory-loaded metal wall member 16 for a long period is obtained. Furnace lid refractories 21 loaded on the refractory-loaded metal wall member 16 are not limited to materials such as chamotte, waxite, quartzite, and high alumina, and are suitable for many types of refractory materials. Or a refractory material having a caking property or a refractory brick formed by molding the material into a block and dried, and is stably held by the bottomed structure of the space 20. In addition, the heat-resistant metal strips 19 forming the bottomed space chamber 20 may be fixed to the horizontal support frame 17 and are individually detachable so that only the heat-resistant metal strips 19 that can no longer be used can be easily replaced. They may be arranged side by side by engaging means. FIG. 2 shows an embodiment in which the heat-resistant metal strip 19 is fastened with bolts 22 through loose fitting holes so as to cope with a size that changes when the heat-resistant metal strip 19 expands or contracts. The material provided for the heat-resistant metal strip 19 may be any metal having heat resistance other than special steel such as heat-resistant steel or stainless steel or cast iron, and the size and thickness are not particularly limited. Not. That is, the furnace refractory 21 is directly affected by the strong impact of coke that collapses when the coke is discharged from the coke oven by the refractory-loaded metal wall member 16 wrapped in the heat-resistant metal strip 19 so as to protect the periphery of the furnace refractory 21. Since it is not subjected to heat, it retains fracture resistance without wear or chipping, and has a high temperature heat without extremely lowering the temperature even if the coke carbonization furnace lid itself is left in the air while it is being discharged from the kiln. Therefore, it has the effect of speeding up the heating of the coal particles charged near the furnace lid of the coke carbonization furnace 1 in the next operation.
[0011]
The coke carbonization furnace lid configured as described above is obtained by loading a furnace lid refractory 21 into a bottomed space chamber 20 of a heat-resistant metal strip plate 19 attached to the furnace lid structure 3 via a heat insulating box 11, or After forming the refractory-loaded metal wall member 16 while alternately repeating the mounting of the metal strip plate 19 and the loading of the furnace lid refractory 21, if the irregular-shaped refractory is used for the furnace lid refractory 21, it is sufficiently dried. After that, it is provided to the coke carbonization furnace lid.
[0012]
【The invention's effect】
According to the coke carbonization furnace lid of the present invention as described above, the refractory-loaded metal wall member causes the furnace lid refractories such as irregular-shaped refractories and refractory bricks to collapse due to the collision of the coke which collapses every time the coke kiln is discharged. There is no need to repair the refractory deficient part of the furnace lid, and there is a feature that it can be used for a long time. In addition, since the refractory loaded metal wall member is composed of detachable individual heat-resistant metal strips, even if it is significantly deformed or damaged due to any cause or obstacle, only the heat-resistant metal strip at that point can be easily replaced Then, the next work can be started immediately. Moreover, the replaced heat-resistant metal strip has a feature that can be recycled by performing cutting and straightening. Furthermore, even if the coke carbonization furnace lid is left in the atmosphere for a long time during the coke kiln discharge operation, the large heat release of the high temperature held by the furnace lid refractory is avoided by the heat insulation effect of the heat insulation box and the heat-resistant metal strip. Therefore, there are many features and effects such as the effect of starting heating the coal particles charged into the coke carbonization furnace immediately after the blockage and having the effect of significantly reducing the generation of tar.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a coke carbonization furnace lid furnace in a height direction according to an embodiment of the present invention.
FIG. 2 shows a cross-sectional view of the coke carbonization furnace lid of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Coke carbonization furnace 2 Coal particles 3 Furnace lid structure 5 Furnace opening frame 6 Sheet plate 7 Door opening 11 Insulation box 16 Refractory loading metal wall member 17 Horizontal support frame 18 Expansion gap 19 Heat resistant metal strip plate 20 Bottom space room 21 Furnace lid refractories
