JP2000129264A - Method of repairing coke oven wall - Google Patents
Method of repairing coke oven wallInfo
- Publication number
- JP2000129264A JP2000129264A JP10308366A JP30836698A JP2000129264A JP 2000129264 A JP2000129264 A JP 2000129264A JP 10308366 A JP10308366 A JP 10308366A JP 30836698 A JP30836698 A JP 30836698A JP 2000129264 A JP2000129264 A JP 2000129264A
- Authority
- JP
- Japan
- Prior art keywords
- ledge
- iron
- block
- coke oven
- brick wall
- 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.)
- Granted
Links
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、コークス炉の炉壁
補修方法に関し、とくに、窯口レッジの脱落を有利に補
修できるコークス炉の炉壁補修方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing a furnace wall of a coke oven, and more particularly to a method for repairing a furnace wall of a coke oven which can advantageously repair falling off of a furnace mouth ledge.
【０００２】[0002]
【従来の技術】石炭を乾留してコークスにする設備とし
て、コークス炉が知られている。常用のコークス炉は、
下部に蓄熱室を配置し、上部に炭化室と燃焼室を交互に
配している。そして、燃焼室から隔壁を介して与えられ
る熱によって、炭化室に装入された石炭を乾留する。2. Description of the Related Art A coke oven is known as a facility for carbonizing coal to form coke. A common coke oven is
The heat storage chamber is arranged in the lower part, and the carbonization chamber and the combustion chamber are arranged alternately in the upper part. Then, the coal charged into the carbonization chamber is carbonized by heat given from the combustion chamber via the partition.
【０００３】乾留後、コークスは炭化室の奥に配置され
たプッシャにより出口（窯口という）から押し出され
る。窯口の両側の隔壁は、図２の平断面図に示すよう
に、燃焼室２を囲む煉瓦壁３の炉外側の面を鉄皮６で保
護し、この鉄皮６をバックステー５で固定して構成され
る。ドアフレーム４との取り合いから、鉄皮６はその幅
両端部が炉内側に退くように曲げられ、これに応じて煉
瓦壁３のコーナ部にも凹みが設けられている。また、炭
化室１の出口（窯口１A ）の縦縁に相当する部位は、変
動幅の大きい繰り返し温度昇降による熱応力に加え、ド
ア８の開閉による衝撃や振動が直に加わるために、特に
損傷しやすい。そのため、この部位では鉄皮６と煉瓦壁
３の間に窯口レッジ７と呼ばれる補強材が介装されてい
る。[0003] After carbonization, coke is extruded from an outlet (called a kiln port) by a pusher arranged in the back of the carbonization chamber. As shown in the plan cross-sectional view of FIG. 2, the partition walls on both sides of the kiln mouth protect the outer surface of the brick wall 3 surrounding the combustion chamber 2 with an iron shell 6 and fix the iron shell 6 with a back stay 5. It is composed. Due to the connection with the door frame 4, the steel shell 6 is bent so that both ends of the width are retreated toward the inside of the furnace, and accordingly, the corners of the brick wall 3 are also provided with depressions. In addition, the portion corresponding to the vertical edge of the outlet of the carbonization chamber 1 (the kiln opening 1A) is particularly subjected to impact and vibration due to opening and closing of the door 8, in addition to thermal stress caused by repeated temperature rise and fall with a large fluctuation range. Easy to be damaged. For this reason, a reinforcing material called kiln mouth ledge 7 is interposed between the iron shell 6 and the brick wall 3 at this portion.
【０００４】窯口レッジ７は、鉄皮６にリベット９で固
着された鉄製のプロテクションレッジ７a と煉瓦壁３に
張り付けられた鉄製の煉瓦側レッジ７b とで構成されて
いる。[0004] The kiln mouth ledge 7 comprises an iron protection ledge 7a fixed to the steel shell 6 with rivets 9 and an iron brick side ledge 7b attached to the brick wall 3.
【０００５】[0005]
【発明が解決しようとする課題】窯口レッジ７と鉄皮６
ないし煉瓦壁３との隙間にはモルタルを充填し、乾留ガ
スの外部漏洩を阻止しているが、操業しているうちに炭
化室１側からモルタルに亀裂が進展するので、２週間に
１回はモルタル吹き付けを行って亀裂を塞ぐ。しかし、
亀裂を完全になくすことは困難であり、進展した亀裂を
通って侵入する乾留ガスによって窯口レッジ７が腐食さ
れ、炉高方向の一部区間で脱落することがある。SUMMARY OF THE INVENTION Kiln mouth ledge 7 and iron skin 6
The gap between the brick wall 3 and the mortar is filled with mortar to prevent the carbonization gas from leaking outside. However, the cracks develop in the mortar from the carbonization chamber 1 during operation, so once every two weeks Sprays mortar to close the cracks. But,
It is difficult to completely eliminate the cracks, and the carbonization ledge 7 penetrating through the cracks that have developed may corrode the furnace opening ledge 7 and may fall off in some sections in the furnace height direction.
【０００６】これを放置しておくと、鉄皮に接する煉瓦
（フロント煉瓦という）の損耗が加速し、断熱性が劣化
して燃焼室の熱効率が低下し、また、煉瓦壁コーナ部の
損耗も進んで亀裂が炭化室から燃焼室まで貫通し、乾留
ガスが燃焼室に漏洩して不完全燃焼し発煙量が増加する
などの悪影響を及ぼすため、窯口レッジの脱落個所が見
つかったら速やかに補修する必要がある。If left unattended, the bricks (called front bricks) in contact with the iron shell accelerate to wear, the heat insulation deteriorates, the thermal efficiency of the combustion chamber decreases, and the brick wall corners also wear. Cracks proceed from the carbonization chamber to the combustion chamber, and the carbonization gas leaks into the combustion chamber, causing incomplete combustion and increasing the amount of smoke generated. There is a need to.
【０００７】この脱落個所の空洞は相当に大きく、モル
タル吹き付けで空洞全体を埋めるのでは耐久性が不十分
となるため、この補修工事は、従来、煉瓦壁から鉄皮を
取り外し、プロテクションレッジの脱落個所に新品のプ
ロテクションレッジをリベットまたはネジで固定し、一
方、煉瓦側レッジが脱落した個所には新品の煉瓦側レッ
ジを張り付け、そのうえで鉄皮を元の位置に取り付ける
という方法で行われていた。[0007] Since the cavity at the location of the dropout is considerably large and the durability is insufficient if the entire cavity is filled with mortar spraying, this repair work has conventionally been carried out by removing the steel shell from the brick wall and removing the protection ledge. A new protection ledge was fixed to each location with rivets or screws, while a new brick-side ledge was attached to the place where the brick-side ledge was dropped, and then a steel shell was attached to its original position.
【０００８】しかしながら、上記方法では、約 6.5〜
6.7ｍの炉高区間にわたってフロント煉瓦を覆う１枚板
の鉄皮を取り外す必要があり作業負荷が大きい。また、
取り外す必要のない窯口レッジ健全部まで鉄皮とともに
取り外されるため無駄が多い。また、鉄製のプロテクシ
ョンレッジや煉瓦側レッジの新品は、脱落個所の補修部
材に充てるには高価に過ぎる。However, in the above method, about 6.5 to
It is necessary to remove a single sheet of steel covering the front brick over the furnace height section of 6.7 m, and the work load is large. Also,
There is a lot of waste because the kiln mouth ledge that does not need to be removed is removed together with the iron skin. Also, new iron protection ledges and brick-side ledges are too expensive to be used for repairing parts that fall off.
【０００９】上記従来技術の諸問題に鑑み、本発明は、
鉄皮を取り外さずに窯口レッジの脱落を補修でき、しか
も材料費を節減できるコークス炉の炉壁補修方法を提供
することを目的とする。In view of the above problems of the prior art, the present invention provides
An object of the present invention is to provide a method of repairing a coke oven wall, which can repair a fall of a kiln ledge without removing a steel shell and can reduce material costs.
【００１０】[0010]
【課題を解決するための手段】本発明は、鉄皮と煉瓦壁
の間に介装されてコークス炉の窯口の両縁部をなす窯口
レッジの脱落を補修する方法であって、窯口レッジ脱落
個所の煉瓦壁に対向する鉄皮面に鉄棒を溶接し、この鉄
棒に係合する溝を形成した耐火物製のブロックを、該ブ
ロックの溝と前記鉄棒が係合するように鉄皮と煉瓦壁の
間に装入することを特徴とするコークス炉の炉壁補修方
法である。SUMMARY OF THE INVENTION The present invention relates to a method for repairing a fall of a kiln ledge which is interposed between a steel shell and a brick wall and constitutes both edges of a kiln opening of a coke oven. An iron bar is welded to an iron skin surface facing a brick wall at a place where a mouth ledge is dropped, and a refractory block formed with a groove for engaging with the iron bar is ironed so that the groove of the block and the iron bar are engaged. A method for repairing a coke oven wall, wherein the method is inserted between a skin and a brick wall.
【００１１】[0011]
【発明の実施の形態】本発明では、窯口レッジ脱落個所
の煉瓦壁に対向する鉄皮面に鉄棒を溶接し、この鉄棒に
係合する溝を形成した耐火物製のブロックを、該ブロッ
クの溝と前記鉄棒が係合するように鉄皮と煉瓦壁の間に
装入するようにした。これによれば、補修部材として、
鉄製の窯口レッジの代わりに、より安価な耐火物製のブ
ロックを用いるので、材料費を節減できる。DETAILED DESCRIPTION OF THE INVENTION In the present invention, a refractory block in which a steel bar is welded to an iron skin facing a brick wall at a place where a kiln ledge is dropped off and a groove for engaging with the iron bar is formed is used as the block. The steel bar and the brick wall were inserted so that the groove of the iron bar and the iron bar engaged with each other. According to this, as a repair member,
The use of cheaper refractory blocks instead of iron kiln ledges reduces material costs.
【００１２】このブロックを構成する耐火物の材質とし
ては、コーディエライト、アルミナ、ハイアルミナ、シ
ャモット、溶融シリカなどが好適である。なお、ブロッ
クは、焼成品だけでなく、装入時に型崩れしないもので
あれば耐火材料を成形したままの未焼成品にて作成して
もよい。また、窯口レッジ脱落個所の煉瓦壁に対向する
鉄皮面に鉄棒を溶接し、この鉄棒に係合する溝を形成し
た耐火物製のブロックを、該ブロックの溝と前記鉄棒が
係合するように鉄皮と煉瓦壁の間に装入するので、鉄皮
を取り付けたままの状態で窯口レッジの健全個所はその
ままで脱落個所のみ補修することができ、無駄が省けて
工期を大幅に短縮することができる。なお、ブロック装
入は炭化室側から行うことができる。As the material of the refractory constituting the block, cordierite, alumina, high alumina, chamotte, fused silica and the like are preferable. The block may be made of not only a fired product but also an unfired product in which a refractory material is formed as long as the block does not collapse at the time of charging. In addition, an iron bar is welded to an iron skin surface facing a brick wall at a place where a kiln mouth ledge is dropped, and a refractory block having a groove for engaging with the iron bar is engaged with the groove of the block and the iron bar. As it is inserted between the steel skin and the brick wall, it is possible to repair only the dropped parts while leaving the healthy part of the kiln mouth ledge as it is with the steel skin attached, saving waste and greatly shortening the construction period Can be shortened. The block can be charged from the carbonization chamber side.
【００１３】ブロックは溝を介して鉄棒で係止されるの
で、補修後の操業時の振動等により炭化室側に張り出す
ことはない。このように鉄棒は、ブロックの炭化室側へ
の張り出しを防止するストッパとして用いるため、その
長さ方向を炉高方向に平行にして溶接するのが好まし
い。鉄棒としては、通常の築炉や建築に使用される鉄筋
を使用できる。Since the block is locked by the iron bar through the groove, the block does not protrude toward the carbonization chamber due to vibration during operation after repair. As described above, since the iron bar is used as a stopper for preventing the block from protruding toward the carbonization chamber side, it is preferable to weld the iron bar so that its length direction is parallel to the furnace height direction. As the horizontal bar, a reinforcing bar used in a normal furnace and construction can be used.
【００１４】また、溝を鉄棒に係合させた時点ですでに
ブロックが炭化室側に突き出ていては、コークスの通過
を妨げるとともにブロック自体の破損を招きやすいか
ら、ブロック上の溝形成位置は、この溝を鉄皮に溶接し
た鉄棒に係合させたときにブロックと煉瓦壁とが面一に
なる位置とするのが好ましい。なお、補修開始時には常
法により窯口レッジ脱落個所の研掃を行い、煉瓦壁に生
じている亀裂をモルタル等で充填するのがよい。また、
ブロック装入作業は、常法により適宜耐火性充填材（モ
ルタル、プラスティック材等）でブロックと煉瓦壁ない
し鉄皮との隙間を充填しながら進めるのがよい。Further, if the block has already protruded toward the carbonization chamber when the groove is engaged with the iron bar, the passage of coke is hindered and the block itself is likely to be damaged. When the groove is engaged with an iron rod welded to a steel shell, it is preferable that the block and the brick wall are located at the same position. At the start of repair, it is preferable to clean the place where the kiln mouth ledge is dropped off by a conventional method, and to fill the cracks generated in the brick wall with mortar or the like. Also,
The block charging operation is preferably carried out by a conventional method while appropriately filling the gap between the block and the brick wall or the steel shell with a refractory filler (such as mortar or plastic material).
【００１５】図１は、本発明により補修したコークス炉
窯口付近の炉壁構造の一例を示す平断面図である。(a)
はプロテクションレッジは脱落したが煉瓦側レッジ７b
は残っている個所、(b) はプロテクションレッジと煉瓦
側レッジの両方とも脱落した個所をそれぞれ補修したも
ので、いずれも炭化室１側から鉄皮６に鉄棒10を溶接
し、鉄棒６に係合させる溝12を形成した耐火物製のブロ
ック11を、鉄棒６に溝12を係合させ、隙間を耐火性充填
材13で充填しながら装入して構成されている。ブロック
11のサイズは、それぞれの脱落個所の空洞サイズに整合
させ、装入後ブロック11と煉瓦壁３の炭化室１側に露出
する面が面一になるように設定されている。FIG. 1 is a plan sectional view showing an example of a furnace wall structure near a coke oven mouth repaired by the present invention. (a)
: The protection ledge was dropped but the brick side ledge 7b
(B) is the repaired part where both the protection ledge and the brick-side ledge have fallen off, and in each case, the iron bar 10 is welded to the steel shell 6 from the carbonization chamber 1 side, and A block 11 made of a refractory material having a groove 12 to be joined is inserted while the groove 12 is engaged with the iron bar 6 and the gap is filled with a refractory filler 13. block
The size of 11 is set so as to match the cavity size of each drop-off location, and the surface exposed to the carbonization chamber 1 side of the block 11 and the brick wall 3 after charging is flush.
【００１６】[0016]
【実施例】カールスチル式コークス炉の炉頂から約４ｍ
下方までの炉高区間で、操業時に１つの燃焼室のフロン
ト煉瓦に張られた鉄皮の温度が220 〜240 ℃と異常に高
くなっており、この燃焼室からの発煙量が異常に増加し
ていることが観測され、休炉時にこの異常部分を調査し
たところ窯口レッジの脱落が発見された。ある個所では
プロテクションレッジのみ脱落し、別の個所ではプロテ
クションレッジと煉瓦壁レッジの両方が脱落していたの
で、これら脱落個所を本発明により前者は図１(a) 、後
者は図１(b) の炉壁構造とするように補修した。[Example] Approximately 4 m from the top of a Carl still coke oven
In the furnace height section to the lower part, the temperature of the steel clad on the front brick of one combustion chamber during operation became abnormally high at 220 to 240 ° C, and the amount of smoke emitted from this combustion chamber increased abnormally. When the furnace was shut down, this abnormal part was investigated, and it was discovered that the kiln mouth ledge had fallen off. In one place, only the protection ledge was dropped off, and in another place, both the protection ledge and the brick wall ledge were dropped off. Therefore, these dropped out places are shown in FIG. 1 (a) for the former and FIG. 1 (b) for the latter according to the present invention. The furnace wall structure was repaired.
【００１７】補修にあたっては、脱落個所をブラストで
研掃し、露出した煉瓦壁に見いだされた亀裂をモルタル
吹き付けにより塞ぎ、煉瓦壁に取り付けられた状態の鉄
皮に、16mmφ×100mm 長の鉄筋を、長さ方向を炉高方向
に揃えて一列に溶接し、この鉄筋に係合させる溝を形成
した耐火物製のブロックを、溝を鉄筋に係合させ、かつ
脱落空洞との間の隙間を適宜プラスティック材で埋めな
がら装入した。プラスティック材は操業再開後の炉熱に
より硬化する。[0017] In repairing, the fall-off location is blasted with a blast, the cracks found on the exposed brick wall are closed by mortar spraying, and a steel bar of 16 mmφ × 100 mm length is attached to the steel skin attached to the brick wall. The length direction is aligned with the furnace height direction and welded in a row, a refractory block with a groove to be engaged with this rebar is engaged with the groove, the groove is engaged with the rebar, and the gap between the dropout cavity and It was charged while properly filling with plastic material. The plastic material is hardened by furnace heat after the restart of operation.
【００１８】ブロックは図１(a),(b) に対応する２種類
のサイズとし、ブロックの素材としては、耐スポール性
に優れ強度の高いコーディエライト・ムライト質耐火物
（48％ Al2O3−43％SiO2−４％ MgO）のステンレスファ
イバ２％添加品を使用した。この補修工事の費用は、鉄
皮を取り外して新品の鉄製窯口レッジを固着する従来法
の約1/10で済んだ。また、工事期間は同従来法の約1/3
に短縮した。The block FIG. 1 (a), and 2 kinds of sizes corresponding (b), the examples of the material of the block, high cordierite-mullite refractories having excellent strength spalling resistance (48% Al 2 O 3 -43% SiO 2 -4% MgO) stainless steel fiber added 2% was used. The cost of the repair work was about one-tenth that of the conventional method of removing the iron skin and fixing a new iron kiln ledge. The construction period is about 1/3 of the conventional method.
Shortened to
【００１９】この補修後の操業では、補修個所の鉄皮の
温度は通常レベルの200 ℃前後に落ちつき、燃焼室から
の発煙量も通常レベルに低減した。In the operation after the repair, the temperature of the steel shell at the repaired portion fell to a normal level of about 200 ° C., and the amount of smoke emitted from the combustion chamber was reduced to the normal level.
【００２０】[0020]
【発明の効果】かくして本発明によれば、コークス炉窯
口レッジ脱落の補修工事を安価にかつ短い工期で実施で
きるようになるという優れた効果を奏する。As described above, according to the present invention, there is an excellent effect that the repair work for the coke oven furnace ledge falling off can be carried out at a low cost and in a short construction period.
【図１】本発明により補修したコークス炉窯口付近の炉
壁構造の一例を示す平断面図である。FIG. 1 is a plan sectional view showing an example of a furnace wall structure near a coke oven kiln mouth repaired according to the present invention.
【図２】補修前のコークス炉窯口付近の炉壁構造を示す
平断面図である。FIG. 2 is a plan sectional view showing a furnace wall structure near a coke oven opening before repair.
１ 炭化室 １A 窯口 ２ 燃焼室 ３ 煉瓦壁 ４ ドアフレーム ５ バックステー ６ 鉄皮 ７ 窯口レッジ ７a プロテクションレッジ ７b 煉瓦側レッジ ８ ドア ９ リベット 10 鉄棒 11 ブロック 12 溝 13 耐火性充填材 DESCRIPTION OF SYMBOLS 1 Carbonization room 1A kiln opening 2 Combustion chamber 3 Brick wall 4 Door frame 5 Back stay 6 Iron skin 7 Kiln opening ledge 7a Protection ledge 7b Brick side ledge 8 Door 9 Rivet 10 Iron rod 11 Block 12 Groove 13 Fireproof filler
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岸 忠勝 岡山県倉敷市水島川崎通１丁目（番地な し） 川崎製鉄株式会社水島製鉄所内 Ｆターム(参考） 4K045 AA03 BA02 GA10 RA10 RA16 4K051 AA08 AB03 BB02 BF01 BG03 KA03 KA09 KA10 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tadakatsu Kishi 1-chome, Mizushima-Kawasaki-dori, Kurashiki-shi, Okayama Pref. BF01 BG03 KA03 KA09 KA10
Claims (1)
炉の窯口の両縁部をなす窯口レッジの脱落を補修する方
法であって、窯口レッジ脱落個所の煉瓦壁に対向する鉄
皮面に鉄棒を溶接し、この鉄棒に係合する溝を形成した
耐火物製のブロックを、該ブロックの溝と前記鉄棒が係
合するように鉄皮と煉瓦壁の間に装入することを特徴と
するコークス炉の炉壁補修方法。1. A method for repairing a fall of a kiln ledge which is interposed between a steel shell and a brick wall and constitutes both edges of a kiln mouth of a coke oven, comprising the steps of: An iron bar is welded to the opposed steel bar surface, and a refractory block having a groove for engaging the bar is mounted between the steel bar and the brick wall so that the groove of the block and the bar are engaged. A method for repairing a coke oven wall, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30836698A JP3562346B2 (en) | 1998-10-29 | 1998-10-29 | Repair method of coke oven wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30836698A JP3562346B2 (en) | 1998-10-29 | 1998-10-29 | Repair method of coke oven wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000129264A true JP2000129264A (en) | 2000-05-09 |
| JP3562346B2 JP3562346B2 (en) | 2004-09-08 |
Family
ID=17980208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30836698A Expired - Fee Related JP3562346B2 (en) | 1998-10-29 | 1998-10-29 | Repair method of coke oven wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3562346B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011088948A (en) * | 2009-10-20 | 2011-05-06 | Jfe Steel Corp | Oven mouth structure of coke oven and method for manufacturing coke |
| JP2011111513A (en) * | 2009-11-26 | 2011-06-09 | Jfe Steel Corp | Throat structure of coke oven and method for producing coke using the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134322B (en) * | 2011-11-22 | 2015-07-22 | 沈阳铝镁设计研究院有限公司 | Opening type roasting fire way pulling brick and method of fire hole arrangement |
-
1998
- 1998-10-29 JP JP30836698A patent/JP3562346B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011088948A (en) * | 2009-10-20 | 2011-05-06 | Jfe Steel Corp | Oven mouth structure of coke oven and method for manufacturing coke |
| JP2011111513A (en) * | 2009-11-26 | 2011-06-09 | Jfe Steel Corp | Throat structure of coke oven and method for producing coke using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3562346B2 (en) | 2004-09-08 |
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