JPH06299156A - Method for removing deposited carbon of carbonization chamber of coke oven - Google Patents
Method for removing deposited carbon of carbonization chamber of coke ovenInfo
- Publication number
- JPH06299156A JPH06299156A JP8629193A JP8629193A JPH06299156A JP H06299156 A JPH06299156 A JP H06299156A JP 8629193 A JP8629193 A JP 8629193A JP 8629193 A JP8629193 A JP 8629193A JP H06299156 A JPH06299156 A JP H06299156A
- Authority
- JP
- Japan
- Prior art keywords
- carbon
- coke oven
- carbonization chamber
- temperature
- removal
- 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.)
- Withdrawn
Links
Landscapes
- Coke Industry (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、コークス炉炭化室の付
着カーボン除去方法、より詳しくは、カーボンの除去完
了を的確に判定して、カーボンの除去不足と過剰な除去
を防止する付着カーボン除去方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing carbon deposits in a coke oven carbonization chamber, and more particularly, to removing carbon deposits for accurately determining the completion of carbon removal to prevent insufficient carbon removal and excessive carbon removal. Regarding the method.
【０００２】[0002]
【従来の技術】コークス炉炭化装置においては、乾留生
成ガスの熱分解によって生じるカーボンや、石炭装入時
に飛散する微粉炭が炭化室の炉壁に固着して、これがコ
ークス化し付着カーボンとなる。この付着カーボンは、
炉壁面上で成長するに従い、炉壁の熱伝導率を下げ、ま
た炭化室の有効容量を減少させ、コークス炉の生産性の
低下、更には、コークス押出を不可能にする窯詰まりの
原因ともなる。2. Description of the Related Art In a coke oven carbonization apparatus, carbon generated by pyrolysis of a gas produced by dry distillation and pulverized coal that scatters when coal is charged adhere to the furnace wall of a carbonization chamber and are coked to become adhered carbon. This attached carbon is
As it grows on the furnace wall surface, it lowers the thermal conductivity of the furnace wall, reduces the effective capacity of the carbonization chamber, lowers the productivity of the coke oven, and is a cause of kiln clogging that makes coke extrusion impossible. Become.
【０００３】このコークス炉の付着カーボンを除去する
ため、従来より、種々の方策が採られている。最も原始
的なものは、先端の尖ったやり状の治具を用い人力で突
き落とす方法であり、また機械的に削り取る方法とし
て、コークス押出し機ラムヘッドに装着された摺動接触
自在の刃を、炉壁に圧着させながらラムを移動させて付
着カーボンを削り落とす方法等がある。In order to remove the carbon adhering to the coke oven, various measures have hitherto been taken. The most primitive one is the method of manually pushing it down using a spiky jig with a sharp tip, and as a method of mechanically shaving, a sliding contactable blade attached to a ram head of a coke extruder is used as a furnace. There is a method of moving the ram while pressing it against the wall to scrape off the attached carbon.
【０００４】しかしながら、前者の人力による方法で
は、労働環境やまた施工能率上の問題があり、また、後
者の機械的に削り落とす方法では、炉壁レンガ自体を損
傷し易いという問題がある。However, the former method by manpower has a problem in working environment and construction efficiency, and the latter method by mechanical shaving has a problem that the furnace wall brick itself is easily damaged.
【０００５】この対策として、例えば、特開平３−１１
１４８７号公報に記載されてるように、コークス炉内に
酸素含有気体などの酸素含有気体を導入して炉壁に固着
したカーボンを燃焼させ、カーボンの除去完了時点を撮
像センサの映像に基づく温度又は輝度データによって判
断する方法があり、これによって、炉壁れんがに損傷を
与えることなく、効果的なカーボン除去が可能となる。As a countermeasure against this, for example, Japanese Patent Laid-Open No. 3-11
As described in Japanese Patent No. 1487, an oxygen-containing gas such as an oxygen-containing gas is introduced into a coke oven to burn carbon adhering to the furnace wall, and the time point when the removal of carbon is completed is detected based on an image of an image sensor or There is a method of making a judgment based on the brightness data, which makes it possible to effectively remove carbon without damaging the furnace wall brick.
【０００６】一方、コークス炉炭化室等に付着するカー
ボンは、大別して、れんが表面に付着して上記問題の原
因となる有害なもの、またれんが目地部に侵入してシー
ル機能を高める有益なものとがあり、付着カーボンの除
去にあたっては、れんが表面に付着した有害なものは完
全に除去し、また有益なカーボンはできる限り残すこと
が望ましい。On the other hand, the carbon adhering to the carbonization chamber of the coke oven is roughly classified into the harmful ones which adhere to the surface of the brick and cause the above problems, and the beneficial ones which enter the joint portion of the brick and enhance the sealing function. Therefore, when removing the adhered carbon, it is desirable to completely remove the harmful substances adhering to the surface of the brick, and leave the beneficial carbon as much as possible.
【０００７】燃焼による付着カーボン除去は、先ず付着
したカーボン表面が燃焼し、表面が除去された後に深部
へと進み、さらに酸素含有気体を供給しつづけることに
よって、目地内に侵入したカーボンが燃焼する。したが
って、有益な目地のカーボンを残存させるためには、れ
んが表面のカーボン除去完了を的確に検出して、その時
点で酸素含有気体の供給を停止することが必要となる。In the removal of adhered carbon by combustion, first, the surface of the adhered carbon is combusted, and after the surface is removed, the carbon advances to the deep part, and the oxygen-containing gas continues to be supplied to combust the carbon that has penetrated into the joint. . Therefore, it is necessary to accurately detect the completion of removal of carbon from the surface of the brick and stop the supply of the oxygen-containing gas at that time in order to allow the carbon of the beneficial joint to remain.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、特開平
３−１１１４８７号公報に記載の方法では、燃焼させる
ための酸素含有気体の供給停止、すなわちカーボン除去
の完了の判断は、対象物の炉壁面にエアーを噴射してこ
れを撮像センサで撮像し、カーボンが付着している部分
と付着していない部分との温度差から生じる相対的な輝
度むらの有無を検出することによって行っている。この
検出方法では、壁面の一部に厚いカーボンが付着してい
る場合にはそれなりの精度はあるものの、カーボンの付
着量が少なくなると明確な輝度あるは温度変化は検出さ
れず、従って検出精度が悪くなる。また、撮像センサそ
のものが高価でかつ複雑であるために、故障が多く信頼
性にも劣る。However, in the method described in Japanese Patent Laid-Open No. 3-111487, the supply of the oxygen-containing gas for combustion, that is, the determination of the completion of carbon removal is determined on the furnace wall surface of the object. This is performed by injecting air and imaging it with an image sensor to detect the presence or absence of relative luminance unevenness caused by the temperature difference between the part where carbon is attached and the part where carbon is not attached. In this detection method, although there is some accuracy when thick carbon is attached to a part of the wall surface, when the amount of carbon attached is small, no clear brightness change or temperature change is detected, and therefore the detection accuracy is high. become worse. Further, since the image sensor itself is expensive and complicated, there are many failures and the reliability is poor.
【０００９】そこで、本発明が解決すべき課題は、比較
的簡単な構造で、コークス炉炭化室内表面の付着カーボ
ン除去完了時点を的確に判定し、特に目地部における過
除去の無いコークス炉炭化室の付着カーボン除去方法を
提供することにある。Therefore, the problem to be solved by the present invention is a relatively simple structure, which accurately determines the time when the removal of the adhering carbon on the surface of the coke oven carbonization chamber is completed, and in particular the coke oven carbonization chamber without excessive removal of the joints. Another object of the present invention is to provide a method for removing adhered carbon.
【００１０】[0010]
【課題を解決するための手段】本発明は、コークス炉炭
化室内に酸素含有気体を供給して同コークス炉炭化室内
の付着カーボンを焼却除去する方法において、前記コー
クス炉炭化室内の表面温度を測定する温度検出手段によ
り、前記酸素含有気体の供給開始時から連続してコーク
ス炉炭化室内の表面温度を測定し、同測定温度のピーク
値の経過により付着カーボンの除去完了時期を判定し、
前記酸素含有気体の供給を停止することを特徴とする。SUMMARY OF THE INVENTION The present invention is a method for incinerating and removing adhered carbon in a coke oven carbonization chamber by supplying an oxygen-containing gas into the coke oven carbonization chamber to measure the surface temperature in the coke oven carbonization chamber. By the temperature detecting means to measure the surface temperature in the coke oven carbonization chamber continuously from the start of supply of the oxygen-containing gas, determine the removal completion time of the adhered carbon by the passage of the peak value of the measurement temperature,
It is characterized in that the supply of the oxygen-containing gas is stopped.
【００１１】ここで、温度検出手段としては、特に測定
の連続性、耐久性等の点からは輻射温度計が望ましい。
この温度検出手段は、コークス炉炭化室に酸素含有気体
を供給する噴射ノズルと連動して作動するようにすれ
ば、自動運転が可能となる。Here, as the temperature detecting means, a radiation thermometer is preferable in view of continuity of measurement and durability.
If this temperature detecting means is operated in conjunction with the injection nozzle that supplies the oxygen-containing gas to the coke oven carbonization chamber, automatic operation becomes possible.
【００１２】また、温度検出手段による連続的な表面温
度の測定とは、測定場所を単発的に測定するのではな
く、その前後の温度変化が判定できる程度に測定するこ
とを言い、３〜５秒毎、正確な判断のためには、特に、
１〜２秒間隔が望ましい。The continuous measurement of the surface temperature by the temperature detecting means means that the measurement place is not measured in one shot but is measured to the extent that the temperature change before and after the measurement can be determined. For accurate judgment every second,
An interval of 1 to 2 seconds is desirable.
【００１３】本発明者の知見によれば、例えば、上昇管
下部れんが表面の場合、表面温度のピーク値の発生から
Ｘ＝１０秒経過後に、酸素含有気体の供給開始時点での
表面温度と同じになり、れんが表面の付着カーボンが略
完全に焼却除去れることを確認しており、このピーク値
の発生からＸ＝１０経過後した時に酸素含有気体の供給
を停止すれば、特に、カーボンの除去不足と過剰な除去
の無い優れたカーボン除去が可能となる。また、実用的
には、この酸素含有気体の供給開始時点の表面温度と同
じ温度から±２０℃程度の範囲であれば、略同様の効果
を得ることができる。According to the knowledge of the inventor of the present invention, for example, in the case of the surface of the lower brick of the rising pipe, the same as the surface temperature at the time of starting the supply of the oxygen-containing gas after X = 10 seconds has elapsed from the occurrence of the peak value of the surface temperature. It has been confirmed that the carbon adhering to the surface of the brick can be incinerated and removed almost completely, and if the supply of the oxygen-containing gas is stopped when X = 10 has elapsed from the occurrence of this peak value, the carbon removal It enables excellent carbon removal without deficiency and excessive removal. Further, practically, substantially the same effect can be obtained within a range of about ± 20 ° C. from the same temperature as the surface temperature at the time of starting the supply of the oxygen-containing gas.
【００１４】このカーボン除去完了時期は温度検出手段
での測定結果に基づいて、マイクロコンピュータで判断
され、オペレータへのランプ点灯による表示、また、酸
素含有気体の供給を停止することによって実行される。The completion time of carbon removal is judged by the microcomputer based on the measurement result of the temperature detecting means, and is displayed by turning on the lamp to the operator and is stopped by stopping the supply of the oxygen-containing gas.
【００１５】さらに、このようにして検出されたデータ
から算出されたカーボン付着量、及び酸素含有気体供給
時間等から、次期の付着カーボンの除去時期及びその際
の酸素含有気体の供給量や供給時間を事前予測すること
が可能となる。Further, from the carbon deposition amount calculated from the data thus detected, the oxygen-containing gas supply time, etc., the next adhering carbon removal time and the oxygen-containing gas supply amount and supply time at that time Can be predicted in advance.
【００１６】[0016]
【作用】図２（ａ）は酸素含有気体の供給時間と表面温
度の変化、また図２（ｂ）はその時のれんが表面及び目
地内部のカーボン量を示すグラフである。FIG. 2 (a) is a graph showing changes in supply time of oxygen-containing gas and surface temperature, and FIG. 2 (b) is a graph showing the amount of carbon on the surface of the brick and inside the joint.
【００１７】同図に示すように、カーボンが付着した炉
壁面は、酸素含有気体の供給によってカーボンが燃焼し
てＣＯ2 となり、８１００ｋａｌ／ｋｇの熱を発生す
る。このため、その表面温度は上昇する。表面に除去す
べきカーボンが付着している間は燃焼し続け、ｔ秒間一
定の温度上昇を続けるが、焼却除去が進み、表面のカー
ボンが略無くなり、次いで目地内のカーボンが燃焼する
こととなる。しかしながら、目地内のカーボン量は、れ
んが表面の付着カーボンと比べ圧倒的に量が少なく、表
面のカーボンの燃焼完了をピークとして、燃焼による熱
の発生が減少し、徐々に表面温度が低下することとな
る。As shown in the figure, on the furnace wall surface to which carbon adheres, carbon is burned into CO 2 by the supply of the oxygen-containing gas, and heat of 8100 kal / kg is generated. Therefore, the surface temperature thereof rises. Burning continues while carbon to be removed is attached to the surface, and a constant temperature rise continues for t seconds, but the incineration and removal progresses, the carbon on the surface almost disappears, and then the carbon in the joint burns. . However, the amount of carbon in the joints is overwhelmingly smaller than that of the carbon adhering to the surface of the brick, and when the combustion of the carbon on the surface reaches the peak, the heat generated by combustion decreases and the surface temperature gradually decreases Becomes
【００１８】このようにカーボン表面の燃焼完了、すな
わち、目地内のカーボンの燃焼の開始は、ピーク値を境
に表面温度の降下という明確な変化となって表れる。本
発明では、対象物の表面温度の変化を連続的に測定する
ことによって、従来のような相対的な輝度や温度の比較
ではなく、この降下のポイントを捉え、この検出データ
によって、表面の付着カーボン除去完了時点を的確に判
定することが可能となる。As described above, the completion of the combustion of the carbon surface, that is, the start of the combustion of the carbon in the joint appears as a clear change of the surface temperature drop at the peak value. In the present invention, by continuously measuring the change in the surface temperature of the object, rather than comparing the relative brightness and temperature as in the conventional case, the point of this drop is captured, and the detection data is used to detect the adhesion of the surface. It is possible to accurately determine the time point when the carbon removal is completed.
【００１９】[0019]
【実施例】図１は本発明を実施するための装置の模式図
であり、コークス炉炭化室の上昇管壁面に適用した例を
示す。EXAMPLE FIG. 1 is a schematic view of an apparatus for carrying out the present invention, showing an example applied to the wall surface of an ascending pipe of a coke oven carbonization chamber.
【００２０】図中、１はコークス炉炭化室の上昇管、２
はこの上昇管１内にエアーを供給するノズルで、現場移
動機械３に装着されている。輻射温度計からなる温度セ
ンサ４は上昇管の壁面温度を観察可能な位置に配置さ
れ、さらに、温度センサ４の情報は、初期温度、最高温
度、下降温度を１〜２秒毎に処理し、初期カーボン付着
量（厚さ）とカーボン焼却が終了した時間を演算するマ
イクロコンピュータ５に接続されている。６は中央計算
機（移動機械制御シーケンサ）で、マイクロコンピュー
タ５の演算結果を用いて、各移動機械７が制御され、ま
た現場移動機械３のノズル２からのエアー吹き付け停止
時期を指示制御する。In the figure, 1 is an ascending pipe of a coke oven carbonization chamber, 2
Is a nozzle for supplying air into the ascending pipe 1, and is attached to the on-site mobile machine 3. The temperature sensor 4 composed of a radiation thermometer is arranged at a position where the wall temperature of the rising pipe can be observed, and further, the information of the temperature sensor 4 processes the initial temperature, the maximum temperature, and the falling temperature every 1-2 seconds, It is connected to a microcomputer 5 that calculates the initial carbon deposition amount (thickness) and the time when the carbon incineration is completed. Reference numeral 6 denotes a central computer (mobile machine control sequencer), which controls each mobile machine 7 using the calculation result of the microcomputer 5 and also instructs and controls the air blowing stop timing from the nozzle 2 of the site mobile machine 3.
【００２１】上記構成において、コークス炉炭化室の操
業終了に伴って、製造されたコークスが図示しない押出
機により、コークス炉炭化室外へ排出され、次いで、温
度センサ４によって壁面の温度が測定され、これと同時
にノズル２からエアーが供給される。この空気によっ
て、壁面に付着したカーボンが燃焼しＣＯ2 となる。そ
の際、燃焼熱によって表面温度は図２で示した通り上昇
する。空気を供給し続けることによって、炉壁の付着カ
ーボンは燃焼し、排ガスとなって除去される。このエア
ー供給開始から１秒間隔で、温度センサ４によって壁面
の温度が継続的に観測され、その結果は逐次マイクロコ
ンピュータ５に送られる。壁面温度がピークを経過した
時点で、中央計算機６の指令によって、ノズル２からの
エアー供給が停止される。In the above-mentioned structure, with the completion of the operation of the coke oven carbonization chamber, the produced coke is discharged to the outside of the coke oven carbonization chamber by the extruder (not shown), and then the temperature of the wall surface is measured by the temperature sensor 4. At the same time, air is supplied from the nozzle 2. This air burns carbon adhering to the wall surface into CO 2 . At that time, the surface temperature rises as shown in FIG. 2 due to the heat of combustion. By continuing to supply air, the carbon adhering to the furnace wall burns and is removed as exhaust gas. The temperature of the wall surface is continuously observed by the temperature sensor 4 at intervals of 1 second from the start of the air supply, and the result is sequentially sent to the microcomputer 5. When the wall surface temperature reaches the peak, the air supply from the nozzle 2 is stopped by the command from the central computer 6.
【００２２】この制御結果はすべて記録され、次期の付
着カーボンの除去時期及びその際の酸素含有気体の供給
量や供給時間を事前予測される。All the control results are recorded, and the next removal time of the adhered carbon and the supply amount and supply time of the oxygen-containing gas at that time are predicted in advance.
【００２３】上記図１に示す装置を、コークス稼働率１
００〜１１０％、装入炭量３０Ｔ／ｃｈの規模のコーク
ス炉使用して、送風機によってエアーを０．０７ｍ3 ／
ｓｅｃ供給して付着カーボンの除去を行った。The apparatus shown in FIG.
Using a coke oven with a scale of 0 to 110% and a charging amount of 30 T / ch, air is blown to 0.07 m 3 /
It was supplied for sec to remove the attached carbon.
【００２４】本実施例においては、エアー供給開始後約
５０秒で約１１００℃の略定常状態となり、供給開始か
ら約１００秒後にピークを示し、それ以降低下傾向を示
した。さらに供給開始から約１１０秒後に、表面温度が
初期温度１０５０℃と同じとなった時点で、中央計算機
６の自動制御によってノズル２からのエアの供給を停止
した。この結果をもとに、実施例２及び３として、表面
温度が初期温度１０５０℃から±２０℃の時点で停止さ
せた。また、比較例１として、同様の条件で表面の温度
が、ピーク値前の１１５０℃の時点（エアー供給開始後
約１００秒）でエアーの供給を停止し、また比較例２と
して、表面の温度が初期温度よりも低下して１０３０℃
となって時点で停止した。In this example, about 50 seconds after the start of the air supply, the temperature was about 1100 ° C., a steady state was reached, a peak was shown about 100 seconds after the start of the air supply, and a decreasing tendency was exhibited thereafter. Further, about 110 seconds after the start of the supply, when the surface temperature became the same as the initial temperature of 1050 ° C., the supply of air from the nozzle 2 was stopped by the automatic control of the central computer 6. Based on this result, in Examples 2 and 3, the surface temperature was stopped when the initial temperature was 1050 ° C to ± 20 ° C. Further, as Comparative Example 1, the temperature of the surface was stopped under the same conditions at the time of 1150 ° C. before the peak value (about 100 seconds after the start of the air supply), and as Comparative Example 2, the temperature of the surface was changed. Lower than the initial temperature of 1030 ℃
It stopped at that point.
【００２５】冷却後 炉内をファイバースコープによっ
て観察したところ、実施例１，２，３においては、れん
が表面のカーボンは略完全に除去され、かつ目地内のカ
ーボンが残存し、シール効果を維持することが確認され
た。また、比較例２では、目地内のカーボンは確認され
たものの、れんが表面のカーボンも充分に除去されない
状況であった。比較例３では、れんが表面及び目地内の
カーボンの双方が除去された状態であった。After cooling, the inside of the furnace was observed with a fiberscope. In Examples 1, 2 and 3, the carbon on the surface of the brick was almost completely removed, and the carbon in the joint remained to maintain the sealing effect. It was confirmed. Further, in Comparative Example 2, although carbon in the joint was confirmed, carbon on the surface of the brick was not sufficiently removed. In Comparative Example 3, both the surface of the brick and the carbon in the joint were removed.
【００２６】[0026]
【発明の効果】本発明によって以下の効果を奏すること
ができる。According to the present invention, the following effects can be obtained.
【００２７】（１）本発明においては、カーボンが付着
した炉壁表面の温度を連続して観測し、その温度の変化
によって、酸素含有気体の供給をコントロールするため
に、れんが表面の付着カーボンの除去完了が的確に判断
でき、目地部における有益なカーボンを除去することな
く、かつ表面部分の除去不足を無くすことができる。(1) In the present invention, the temperature of the surface of the furnace wall on which carbon is adhered is continuously observed, and the supply of oxygen-containing gas is controlled by the change in the temperature. The completion of the removal can be accurately judged, the beneficial carbon in the joint is not removed, and the insufficient removal of the surface portion can be eliminated.
【００２８】（２）同様の理由により、原料条件（石炭
の揮発分や膨張圧）や操業条件（炉温等）の差異にも対
応できる。(2) Due to the same reason, it is possible to cope with the difference in the raw material conditions (coal volatile content and expansion pressure) and operating conditions (furnace temperature etc.).
【００２９】（３）れんが表面の付着カーボンの除去完
了が的確に判断できることにより、カーボン焼却装置の
空気吹き付け時間の制御、設定機能等、カーボン焼却装
置の完全自動運転が可能となる。(3) Since the completion of the removal of the carbon adhering to the surface of the brick can be accurately judged, the carbon incinerator can be fully automatically operated, such as controlling the air blowing time of the carbon incinerator and setting functions.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明を実施するための装置の模式図であり、
コークス炉炭化室の上昇管壁面に適用した例を示す。FIG. 1 is a schematic view of an apparatus for carrying out the present invention,
An example applied to the wall surface of the ascending pipe of the coke oven carbonization chamber is shown.
【図２】図２（ａ）は酸素含有気体の供給時間と表面温
度の変化、また図２（ｂ）はその時のれんが表面及び目
地内部のカーボン量を示すグラフである。FIG. 2 (a) is a graph showing changes in supply time of oxygen-containing gas and surface temperature, and FIG. 2 (b) is a graph showing the amount of carbon on the surface of the brick and inside the joint.
１ 上昇管 ２ ノズル ３ 移動機械 ４ 温度センサ ５ マイクロコンピュータ ６ 中央計算機 ７ 各移動機械 1 Rise pipe 2 Nozzle 3 Mobile machine 4 Temperature sensor 5 Microcomputer 6 Central computer 7 Each mobile machine
Claims (1)
給して同コークス炉炭化室内の付着カーボンを焼却除去
する方法において、 前記コークス炉炭化室内の表面温度を測定する温度検出
手段により、前記酸素含有気体の供給開始時から連続し
てコークス炉炭化室内の表面温度を測定し、同測定温度
のピーク値の経過により付着カーボンの除去完了時期を
判定し、前記酸素含有気体の供給を停止することを特徴
とするコークス炉炭化室の付着カーボン除去方法。1. A method for incinerating and removing adhered carbon in the coke oven carbonization chamber by supplying an oxygen-containing gas into the coke oven carbonization chamber, wherein the oxygen is detected by a temperature detecting means for measuring a surface temperature in the coke oven carbonization chamber. Continuously measure the surface temperature in the carbonization chamber of the coke oven from the start of the supply of the contained gas, determine the completion time of the removal of adhered carbon by the peak value of the measured temperature, and stop the supply of the oxygen-containing gas. A method for removing adhered carbon in a coke oven carbonization chamber, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8629193A JPH06299156A (en) | 1993-04-13 | 1993-04-13 | Method for removing deposited carbon of carbonization chamber of coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8629193A JPH06299156A (en) | 1993-04-13 | 1993-04-13 | Method for removing deposited carbon of carbonization chamber of coke oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06299156A true JPH06299156A (en) | 1994-10-25 |
Family
ID=13882741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8629193A Withdrawn JPH06299156A (en) | 1993-04-13 | 1993-04-13 | Method for removing deposited carbon of carbonization chamber of coke oven |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06299156A (en) |
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