JPH09310072A - Coke oven furnace pressure control method - Google Patents
Coke oven furnace pressure control methodInfo
- Publication number
- JPH09310072A JPH09310072A JP15161996A JP15161996A JPH09310072A JP H09310072 A JPH09310072 A JP H09310072A JP 15161996 A JP15161996 A JP 15161996A JP 15161996 A JP15161996 A JP 15161996A JP H09310072 A JPH09310072 A JP H09310072A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- carbonization
- coke oven
- furnace
- furnace lid
- 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
- Coke Industry (AREA)
Abstract
(57)【要約】
【課題】 乾留初期におけるガス漏れを防止し、かつ乾
留末期におけるコークス炉内圧を所定の微陽圧に保持す
る。
【解決手段】 コークス炉上昇管ベンド部の圧力を連続
測定し、このベンド部圧力が発生ガス量に対応して予め
定めた所定パターンとなるように上昇管ベンド部に噴霧
している安水の流量または圧力および／または皿弁開度
を調整し、炭化室内の圧力を所定の微陽圧に保持する。
(57) 【Abstract】 PROBLEM TO BE SOLVED: To prevent gas leakage in the early stage of carbonization and to keep the internal pressure of the coke oven at a predetermined slight positive pressure in the final stage of carbonization. SOLUTION: The pressure of the bend part of the ascending pipe of the coke oven is continuously measured, and the low water sprayed on the bend part of the ascending pipe is formed so that this bend part pressure has a predetermined pattern corresponding to the generated gas amount. The flow rate or pressure and / or the disc valve opening are adjusted to maintain the pressure in the carbonization chamber at a predetermined slight positive pressure.
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、炭化室内への外
気吸引に伴う炉体の損傷を回避しつつ、コークス炉ガス
の大気中や燃焼室への逃出を防止するため、炭化室内圧
力を常に微陽圧に保持するコークス炉炉内圧の制御方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention prevents the coke oven gas from escaping into the atmosphere or into the combustion chamber while avoiding damage to the furnace body due to suction of outside air into the carbonization chamber. The present invention relates to a method for controlling the internal pressure of a coke oven that maintains a slight positive pressure.
【０００２】[0002]
【従来の技術】コークス炉で石炭を乾留する際に発生す
るコークス炉ガスは、炭化室上部のガス道から上昇管、
ベンド管を経て集気本管に集められ、サクションメイン
を経由して後工程の精製工程の排気ブロワにより吸引配
送される。発生するコークス炉ガス量は、装入直後は極
めて多いが、急速に低下して乾留開始から３〜４時間後
にほぼ一定となり、最終段階で再び増加して極大となっ
たのち、急激に減少して火落ちとなる。また、ガス組成
では、当初ＣＨ4が多く発熱量が高いが、乾留末期では
Ｈ2の発生が増え、発熱量は低下する。2. Description of the Related Art Coke oven gas generated when carbonizing carbon in a coke oven rises from a gas passage in the upper part of the carbonization chamber to an ascending pipe,
It is collected in the main air collection pipe through the bend pipe, and is suction-delivered by the exhaust blower in the purification process in the subsequent process via the suction main. The amount of coke oven gas generated is extremely large immediately after charging, but it rapidly decreases, becomes almost constant 3 to 4 hours after the start of carbonization, increases again at the final stage, reaches a maximum, and then rapidly decreases. The fire will fall. Further, in terms of gas composition, the amount of CH 4 is large at the beginning and the amount of heat generated is high, but the amount of H 2 generated increases at the end of dry distillation, and the amount of heat generated decreases.
【０００３】コークス炉の操業においては、サクション
メインに設けたアスカニアと称されている制御弁の開度
を調整して排気ブロワの吸引圧を制御し、集気本管内圧
力を数ｍｍＨ2Ｏ程度の一定微陽圧に保持すると共に、
上昇管ベンド部で噴射される低圧安水によるエゼクター
効果によって行われていた。この炭化室内圧力を数ｍｍ
Ｈ2Ｏ程度の一定微陽圧に保持することは、円滑な操業
を行ううえで重要なことである。その理由は、炭化室内
圧力が高いと発生コークス炉ガスが炉外や燃焼室に漏洩
し、燃焼室での不完全燃焼による煙突からの黒煙発生、
負圧であると外部から空気を吸引して小爆発したり、発
生コークス炉ガスの発熱量低下、空気吸引部での局所燃
焼により炉体の損傷を引き起こす等の問題を生じるから
である。In the operation of a coke oven, the opening pressure of a control valve, called an Ascania, provided in the suction main is adjusted to control the suction pressure of the exhaust blower, and the pressure in the main air collecting pipe is adjusted to about several mmH 2 O. While maintaining a constant slight positive pressure of
This was done by the ejector effect of low-pressure low-pressure water injected at the bend of the rising pipe. This carbonization chamber pressure is several mm
Maintaining a constant slight positive pressure of about H 2 O is important for smooth operation. The reason is that when the pressure in the carbonization chamber is high, the generated coke oven gas leaks outside the furnace and into the combustion chamber, and black smoke is generated from the chimney due to incomplete combustion in the combustion chamber.
This is because a negative pressure causes problems such as sucking air from the outside and causing a small explosion, reducing the heat generation amount of the generated coke oven gas, and causing damage to the furnace body due to local combustion in the air suction section.
【０００４】コークス炉の炭化室内圧力は、集気本管内
圧力、安水のエゼクター効果と発生するコークス炉ガス
量の兼ね合いによって決定される。一方、炭化室から発
生するコークス炉ガスは、乾留の全期間を通じて一定で
はなく、前記したとおり、装入直後は極めて多いが、急
速に低下して乾留開始から３〜４時間後にほぼ一定とな
り、最終段階で再び増加して極大となったのち急激に減
少する。このため、炉蓋下部近傍の炉内圧は、装炭直後
は数十〜数百ｍｍＨ2Ｏであり、次第に低下するが、集
気本管内圧力がほぼ一定の微陽圧に保持され、低圧安水
によるエゼクター効果が一定であっても、乾留末期にお
いては負圧に転じる。The pressure in the carbonization chamber of the coke oven is determined by the balance between the internal pressure of the main gas collection pipe, the ejector effect of cheap water and the amount of coke oven gas generated. On the other hand, the coke oven gas generated from the carbonization chamber is not constant over the entire period of carbonization, and as described above, it is extremely large immediately after charging, but it rapidly decreases and becomes almost constant 3 to 4 hours after the start of carbonization. It increases again at the final stage, reaches a maximum, and then decreases rapidly. Therefore, the pressure inside the furnace near the bottom of the furnace lid is several tens to several hundreds of mmH 2 O immediately after the carbonization and gradually decreases, but the pressure inside the main air collecting main is maintained at a slightly constant slight positive pressure, and the low pressure stability is maintained. Even if the ejector effect of water is constant, it will turn to negative pressure at the end of dry distillation.
【０００５】また、炭化室に石炭を装入する場合には、
コークス炉外への粉塵、ガスの漏洩を防止する目的で、
上昇管ベンド部より蒸気または高圧安水などの高圧流体
によってエゼクターをかけ、炭化室内圧力を下げること
が従来から実施されている。さらに、装入直後のコーク
ス炉ガス発生量の極めて多い時期には、ベンド管部に設
けた高圧安水噴射によるエゼクター効果によって炭化室
内圧力の上昇を抑制して数ｍｍＨ2Ｏ程度の一定微陽圧
に保持することが行われている。When coal is charged in the carbonization chamber,
To prevent dust and gas from leaking outside the coke oven,
It has been conventionally practiced to lower the pressure in the carbonization chamber by applying an ejector from the bend portion of the rising pipe with steam or high-pressure fluid such as high-pressure ammonium hydroxide. Furthermore, at the time when the amount of coke oven gas generated is very high immediately after charging, the rise in the pressure in the carbonization chamber is suppressed by the ejector effect of the high-pressure low-pressure water injection installed in the bend pipe section, and a constant fine temperature of several mmH 2 O is maintained. It is being held at pressure.
【０００６】従来、コークス炉の炭化室内圧力の制御方
法としては、石炭装入開始から装入蓋を閉じるまでの間
において、コークス炉炉内圧を連続的に測定し、この測
定値が、予め定めた所定のパターンどおりになるよう
に、上昇管ベンド管部におけるエゼクター効果を調節
し、炉内圧を制御する方法（特公昭６０−６３８７号公
報）、装入から押出しまでの全乾留期間に、コークス炉
内圧を大気圧以下に設定し、測定圧力を同設定圧力と比
較し、同差圧により発せられる制御信号によって、上昇
管に設けた制御ダンパーの開閉もしくは同上昇管内に圧
力流体を吹込み、もしくは２方法の組合せによって上昇
管の吸引圧を調整する方法（特開平６−０４１５３７号
公報）が提案されている。Conventionally, as a method for controlling the pressure in the carbonization chamber of the coke oven, the pressure inside the coke oven is continuously measured from the start of the charging of coal to the closing of the charging lid, and this measured value is predetermined. The method of adjusting the ejector effect in the rising pipe bend pipe portion and controlling the furnace pressure (patent publication No. 60-6387) so that it follows the predetermined pattern, the coke during the entire carbonization period from charging to extrusion. The furnace pressure is set below atmospheric pressure, the measured pressure is compared with the same set pressure, and the control signal generated by the same differential pressure opens or closes the control damper provided in the rising pipe or blows pressure fluid into the rising pipe. Alternatively, a method of adjusting the suction pressure of the rising pipe by a combination of two methods (Japanese Patent Laid-Open No. 6-041537) has been proposed.
【０００７】[0007]
【発明が解決しようとする課題】上記特公昭６０−６３
８７号公報に開示の方法は、石炭装入時における粉塵、
ガスリークと空気侵入の双方を防止するため、装入時に
常に適正な炉内圧を維持するものであり、実施例におけ
る装炭口での炉内圧測定等のような方法を、炭化時の炉
内圧制御に適用することは不可能である。また、特開平
６−０４１５３７号公報に開示の方法は、炭化室の負圧
操業によってガス漏れを無くし、外気吸入による発生ガ
スの部分燃焼による窯口周辺の炉体金物の加熱、炭化室
と燃焼室間のリークを効果的に回避するものであるが、
実施例に示されるように炉蓋下部に設置された圧力検出
センサーによる炉内圧測定では、窯出し毎に着脱される
炉蓋への圧力検出センサーの取付け等の手間を必要とす
るばかりでなく、炉蓋下部は乾留初期非常に高圧とな
り、しかも炭化時の圧力変動が激しいため、この測定値
を基に制御すると安定した制御は不可能となるという欠
点を有している。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
The method disclosed in Japanese Unexamined Patent Publication No. 87 is a method for producing dust during coal charging,
In order to prevent both gas leakage and air intrusion, the proper furnace pressure is always maintained at the time of charging, and the method such as measuring the furnace pressure at the charging port in the example is used to control the furnace pressure during carbonization. It is impossible to apply to. Further, the method disclosed in Japanese Unexamined Patent Publication No. 6-041537 eliminates gas leakage by negative pressure operation of the carbonization chamber, heats the metal body around the kiln opening by partial combustion of generated gas by inhaling the outside air, and heats the carbonization chamber and combustion. It effectively avoids leaks between rooms,
In the furnace pressure measurement by the pressure detection sensor installed at the bottom of the furnace lid as shown in the example, not only the labor of attaching the pressure detection sensor to the furnace lid that is attached and detached each time the kiln is taken out, etc., The lower part of the furnace lid has a very high pressure at the initial stage of carbonization, and the pressure fluctuation during carbonization is severe. Therefore, if the control is performed based on this measured value, stable control becomes impossible.
【０００８】この発明の目的は、上記従来技術の欠点を
解消し、乾留初期におけるガス漏れを防止し、かつ乾留
末期におけるコークス炉内圧を所定の微陽圧に保持でき
るコークス炉炭化室内圧力の制御方法を提供することに
ある。An object of the present invention is to solve the above-mentioned drawbacks of the prior art, to prevent gas leakage in the initial stage of carbonization, and to control the pressure in the coke oven carbonization chamber in which the internal pressure of the coke oven in the final stage of carbonization can be maintained at a predetermined slight positive pressure. To provide a method.
【０００９】[0009]
【課題を解決するための手段】この発明の請求項１は、
コークス炉上昇管ベンド部の圧力を連続測定し、このベ
ンド部圧力が発生ガス量に対応して予め定めた所定パタ
ーンとなるように上昇管ベンド部に噴霧している安水の
流量または圧力および／または皿弁開度を調整すること
としている。このように、上昇管ベンド部圧力が発生ガ
ス量に対応して予め定めた所定パターン、すなわち、発
生ガス量の多い乾留初期においては、最も圧力の低い炭
化室上部空間圧力が０ｍｍＨ2Ｏ、乾留中期から末期ま
では、炉蓋下部の圧力が０ｍｍＨ2Ｏとなるようにベン
ド部圧力を調整することによって、乾留初期に最も圧力
の高い炉蓋部分の圧力を低減でき、乾留初期の炉蓋部か
らのガス漏れを大幅に低減することができると共に、乾
留末期に最も圧力の低い炉蓋部分の圧力を０ｍｍＨ2Ｏ
に保持でき、負圧による外気の吸引を防止することがで
きる。Means for Solving the Problems Claim 1 of the present invention provides:
The pressure in the bend part of the ascending pipe of the coke oven is continuously measured, and the flow rate or pressure of the low water sprayed on the bend part of the ascending pipe is adjusted so that this bend part pressure has a predetermined pattern that corresponds to the amount of generated gas. / Or adjust the disc valve opening. Thus, in the rising pipe bend part pressure predetermined pattern corresponding to the generated gas amount, that is, in the initial stage of dry distillation where the generated gas amount is large, the lowest pressure in the carbonization chamber upper space pressure is 0 mmH 2 O, dry distillation is performed. From the middle stage to the end stage, by adjusting the pressure of the bend part so that the pressure in the lower part of the furnace lid becomes 0 mmH 2 O, the pressure of the highest part of the furnace lid can be reduced in the initial stage of carbonization, and the furnace cover part in the initial stage of carbonization can be reduced. It is possible to significantly reduce gas leakage from the furnace, and to reduce the pressure of the furnace lid, which has the lowest pressure at the end of dry distillation, to 0 mmH 2 O.
Therefore, the suction of the outside air due to the negative pressure can be prevented.
【００１０】また、請求項２の発明は、炉蓋耐火物の本
体金物側両端を垂直方向に切り欠いてガス通路の断面積
を大きくすると共に、コークス炉上昇管ベンド部の圧力
を連続測定し、このベンド部圧力が予め定めた一定値と
なるように上昇管ベンド部に噴霧している安水の流量ま
たは圧力および／または皿弁開度を調整することとして
いる。このように、炉蓋耐火物の本体金物側両端を垂直
方向に切り欠いてガス通路の断面積を大きくしたことに
より、発生ガス量の多い乾留初期における炉蓋部分の圧
力を炭化室上部空間圧力よりも低くすることができ、ベ
ンド部圧力を予め定めた一定値、すなわち、乾留の全期
間を通じて炉蓋部分の圧力が０ｍｍＨ2Ｏとなるように
調整することによって、炉内圧を微陽圧に保持すること
ができ、乾留初期の炉蓋部からのガス漏れを大幅に低減
することができると共に、負圧による外気の吸引を防止
することができる。Further, according to the invention of claim 2, the both ends of the furnace lid refractory body on the side of the metal body are vertically cut out to increase the cross-sectional area of the gas passage, and the pressure in the bend part of the coke oven riser pipe is continuously measured. The flow rate or pressure of the ammonium hydroxide sprayed on the ascending pipe bend portion and / or the disc valve opening is adjusted so that the bend portion pressure becomes a predetermined constant value. In this way, by vertically notching both ends of the furnace lid refractory body on the metal side, the cross-sectional area of the gas passage was enlarged, so that the pressure of the furnace lid portion at the initial stage of carbonization where a large amount of gas was generated, By adjusting the pressure in the bend part to a predetermined constant value, that is, the pressure in the furnace lid part becomes 0 mmH 2 O during the entire period of carbonization, the furnace pressure becomes a slightly positive pressure. It is possible to hold the gas, and it is possible to significantly reduce gas leakage from the furnace lid portion at the initial stage of carbonization, and it is possible to prevent suction of outside air due to negative pressure.
【００１１】[0011]
【発明の実施の形態】低圧安水の噴射を乾留の全期間に
亘って行う従来方法においては、図５に示すとおり、炉
蓋部分の圧力は装炭直後に百数十ｍｍＨ2Ｏであり、乾
留開始から数時間で１０ｍｍＨ2Ｏ以下となり、乾留中
期から末期かけてゆっくりと減少したのち、乾留末期に
負圧となっている。これに対して炭化室上部空間では、
乾留初期から数ｍｍＨ2Ｏであって乾留の進行に伴い圧
力が減少している。上昇管ベンド部分の圧力は、炭化室
上部空間よりも若干高いだけで、乾留の進行に伴い炭化
室上部空間と同様の経過をたどる。BEST MODE FOR CARRYING OUT THE INVENTION In the conventional method in which low-pressure low-pressure water is injected over the entire period of carbonization, as shown in FIG. 5, the pressure at the furnace lid is 100 tens mmH 2 O immediately after carbonization. After a few hours from the start of carbonization, the pressure became 10 mmH 2 O or less, and it gradually decreased from the middle stage of carbonization to the final stage, and then became negative pressure at the final stage of carbonization. On the other hand, in the upper space of the carbonization chamber,
It is several mmH 2 O from the initial stage of carbonization, and the pressure decreases with the progress of carbonization. The pressure in the bend portion of the rising pipe is slightly higher than that in the upper space of the carbonization chamber, and follows the same process as in the upper space of the carbonization chamber as the carbonization progresses.
【００１２】乾留初期において炉蓋部分と炭化室上部空
間、上昇管ベンド部分の圧力レベルが異なるのは、発生
ガスが通過する空間が炉蓋部分では少ないことに起因し
ている。装炭直後は、炭化室の炉壁付近の石炭が急速に
加熱されてガスを発生するが、炉蓋付近の石炭から発生
したガスは上方に抜けるより炉蓋耐火物と炉壁との間の
隙間（ガス通路）を通って上部空間に流れる。この炉蓋
耐火物と炉壁との隙間は、１０〜２０ｍｍ程度である
が、漏れ込んだ石炭粉や付着カーボン、タールのために
さらに狭くなっている。このため、発生ガスは、この隙
間から上部に抜け難く圧力が高くなるのである。これに
対して炭化室上部空間、上昇管ベンド部分は、十分な空
間があり、発生ガスが容易に通過できるため、高い圧力
にならないものと考えられる。The difference in pressure level between the furnace lid portion, the upper space of the carbonization chamber and the rising pipe bend portion at the initial stage of carbonization is due to the fact that the space through which the generated gas passes is small in the furnace lid portion. Immediately after carbonization, the coal near the furnace wall of the carbonization chamber is rapidly heated to generate gas, but the gas generated from the coal near the furnace lid is discharged between the furnace lid refractory and the furnace wall. It flows through the gap (gas passage) to the upper space. The gap between the furnace lid refractory and the furnace wall is about 10 to 20 mm, but is narrower due to leaked coal powder, adhered carbon, and tar. Therefore, the generated gas is difficult to escape to the upper part from this gap, and the pressure becomes high. On the other hand, it is considered that the upper space of the carbonization chamber and the bend portion of the rising pipe have a sufficient space and the generated gas can easily pass therethrough, so that the high pressure does not occur.
【００１３】乾留の中末期において炉蓋近傍でも高い圧
力とならないのは、炉蓋側の石炭が乾留されてコークス
化し、収縮して亀裂が発生する、あるいは炉蓋耐火物と
の間に収縮によって隙間が生じ、炉蓋耐火物と炉壁との
隙間を通って上部空間に抜けるガス量が減少すると共
に、発生ガス量が乾留初期に比較して減少するためであ
る。また、乾留末期においては、発生ガス量が減少する
ことによって圧力が減少する。In the middle end stage of carbonization, the high pressure does not occur even near the furnace lid because coal on the furnace lid side is carbonized and coke, shrinks and cracks occur, or contracts with the furnace lid refractory. This is because a gap is created, the amount of gas that escapes to the upper space through the gap between the furnace lid refractory and the furnace wall decreases, and the amount of generated gas also decreases compared to the initial stage of carbonization. Also, at the end of dry distillation, the pressure decreases due to the decrease in the amount of gas generated.
【００１４】上記したとおり、コークス炉炭化室内は、
部位によって圧力に差があるため、前述のようにガス漏
れ防止対策として、装炭直後から乾留初期の炉蓋耐火物
と炉壁との隙間の圧力を０〜数ｍｍＨ2Ｏ程度の微陽圧
となるよう炉内圧を調整すると、炭化室上部空間や上昇
管部が強い負圧となって外気の吸引による小爆発や、発
生コークス炉ガスの発熱量低下、外気吸引部での局所燃
焼により炉体の損傷を引き起こすこととなる。As described above, in the coke oven carbonization chamber,
Since there is a difference in pressure depending on the part, as mentioned above, as a gas leak prevention measure, the pressure in the gap between the furnace lid refractory and the furnace wall immediately after carbonization and in the initial stage of carbonization is slightly positive pressure of about 0 to several mmH 2 O. If the furnace pressure is adjusted so that it becomes a negative pressure in the upper space of the carbonization chamber and the rising pipe section, a small explosion due to suction of outside air, a decrease in the calorific value of the generated coke oven gas, and local combustion in the outside air suction section This will cause body damage.
【００１５】したがって、乾留初期においては、炭化室
上部空間が最も圧力が低いので、この炭化室上部空間が
ほぼ０ｍｍＨ2Ｏとなるように圧力調整し、乾留中期か
ら末期においては、炭化室上部空間よりも炉蓋下部の圧
力が低くなるので、炉蓋下部の圧力がほぼ０ｍｍＨ2Ｏ
となるように圧力調整すればよい。しかし、装炭直後に
は、炉蓋部分の圧力を０ｍｍＨ2Ｏにはできないので、
完全に炉蓋からのガス漏れを防止することはできない
が、炉蓋上部の圧力が０ｍｍＨ2Ｏとなるほか、乾留初
期の炉蓋部分の圧力が低減することによって、炉蓋から
のガス漏れを大幅に低減することができる。Therefore, in the initial stage of carbonization, the upper space of the carbonization chamber has the lowest pressure. Therefore, the pressure is adjusted so that the upper space of the carbonization chamber becomes approximately 0 mmH 2 O. Since the pressure in the lower part of the furnace lid is lower than that in the lower part, the pressure in the lower part of the furnace lid is almost 0 mmH 2 O.
The pressure may be adjusted so that However, since the pressure of the furnace lid cannot be set to 0 mmH 2 O immediately after carbonization,
Although it is not possible to completely prevent the gas from leaking from the furnace lid, the pressure at the upper part of the furnace lid becomes 0 mmH 2 O, and the pressure at the furnace lid part in the initial stage of carbonization is reduced, so that the gas leakage from the furnace lid is prevented. It can be significantly reduced.
【００１６】一方、炉内圧力の調整方法としては、図６
に示すとおり安水圧力の調節によるエゼクター効果の採
用や、集気本管圧の変更による調整、集気本管と炭化室
とを区切る皿弁開度の調整があるが、いずれの方法にし
ても炭化室各部の炉内圧は一様に変化することが判明し
ている。また、上昇管部と炭化室上部空間との圧力差
は、乾留の全期間を通じてほぼ一定であり、乾留末期の
炉蓋部の圧力と上昇管部、炭化室上部空間との圧力差も
ほぼ一定である。したがって、この発明の請求項１にお
いては、乾留前半には炭化室上部空間を、乾留中期から
末期には炉蓋下部の圧力がほぼ０ｍｍＨ2Ｏとなるよ
う、上昇管部の圧力をそれぞれの部位との圧力差に応じ
て予め定めた所定パターンとなるように調整することに
より達成することができる。On the other hand, as a method for adjusting the pressure in the furnace, FIG.
As shown in, there are the adoption of the ejector effect by adjusting the low water pressure, the adjustment by changing the pressure of the main air collecting pipe, and the adjustment of the disc valve opening that separates the main collecting pipe and the carbonization chamber. It has been found that the furnace pressure in each part of the carbonization chamber changes uniformly. In addition, the pressure difference between the rising pipe and the upper space of the carbonization chamber is almost constant throughout the entire carbonization, and the pressure difference between the furnace lid at the end of the carbonization and the pressure riser and the upper space of the carbonization chamber are almost constant. Is. Therefore, in claim 1 of the present invention, the pressure in the ascending pipe is adjusted so that the upper space of the carbonization chamber is in the first half of the carbonization and the pressure in the lower part of the furnace lid is approximately 0 mmH 2 O in the middle to the end of the carbonization. This can be achieved by adjusting so as to have a predetermined pattern that is determined in advance according to the pressure difference between
【００１７】なお、上昇管部と炭化室上部空間ならびに
炉蓋下部と圧力差があるのは、炭化室上部空間と上昇管
ベンド部の高低差は２〜３ｍ程度あり、また、炉蓋上下
の高低差は炉高に応じて４〜７ｍ程度あり、それぞれ６
００〜８００℃、２００〜３００℃程度と高温であるた
め、この高低差によるドラフト効果によって、圧力差が
生じているのである。There is a pressure difference between the ascending pipe portion and the upper space of the carbonization chamber and the lower portion of the furnace lid, because the height difference between the upper space of the carbonization chamber and the ascending pipe bend portion is about 2 to 3 m, and the pressure difference between the upper and lower furnace lids is high. The height difference is about 4 to 7 m depending on the furnace height, and each is 6
Since the temperature is as high as about 00 to 800 ° C. and about 200 to 300 ° C., a pressure difference occurs due to the draft effect due to this height difference.
【００１８】さらに、装炭直後から乾留初期の炉蓋下部
の圧力は、前記したとおり、炉蓋耐火物と炉壁との隙間
に集まる発生ガスに比べて隙間断面積が小さいからであ
る。したがって、炉蓋耐火物と炉壁との隙間の断面積を
十分に大きくすれば、発生ガスがスムーズに通過して炉
蓋下部の乾留初期の圧力を炭化室上部空間の圧力よりも
低減することができるのである。この発明の請求項２に
おいては、炉蓋耐火物の本体金物側両端を垂直方向に切
り欠いてガス通路の断面積を大きくしたことによって、
乾留初期から乾留末期の全期間に亘って最低炉内圧力は
炉蓋下部であるから、乾留の全期間に亘って炉蓋下部の
圧力が０ｍｍＨ2Ｏとなるよう、上昇管部の圧力を炉蓋
下部との圧力差に応じて予め定めた一定圧力に調整する
ことによって、炉内を微陽圧に保持することができる。Further, as described above, the pressure in the lower portion of the furnace lid immediately after carbonization and in the initial stage of carbonization is smaller than that of the generated gas gathered in the gap between the furnace lid refractory and the furnace wall, as described above. Therefore, if the cross-sectional area of the gap between the furnace lid refractory and the furnace wall is made large enough, the generated gas should pass smoothly and the initial pressure of carbonization in the lower part of the furnace lid should be lower than the pressure in the upper space of the carbonization chamber. Can be done. According to the second aspect of the present invention, both ends of the furnace lid refractory body on the side of the main metal component are vertically cut out to increase the cross-sectional area of the gas passage.
Since the minimum furnace pressure is the lower part of the furnace lid over the entire period from the initial stage of dry distillation to the final stage of dry distillation, the pressure in the rising pipe is controlled so that the pressure of the lower part of the furnace lid is 0 mmH 2 O over the entire period of dry distillation. The inside of the furnace can be maintained at a slight positive pressure by adjusting the pressure to a predetermined constant pressure according to the pressure difference between the lower part of the lid and the bottom.
【００１９】[0019]
実施例１ 以下に請求項１の発明の詳細を実施の一例を示す図１、
図２に基づいて説明する。図１はこの発明の上昇管ベン
ド部圧力変化に応じて低圧安水の流量を制御する場合の
系統図、図２は上昇管ベンド部圧力が予め定めた所定の
パターンとなるよう低圧安水の流量を制御した場合の乾
留初期からの炭化室上部空間と炉蓋下部の圧力の変化を
示すグラフである。Embodiment 1 FIG. 1 showing an example of carrying out the details of the invention of claim 1 below,
A description will be given based on FIG. FIG. 1 is a system diagram in the case of controlling the flow rate of low-pressure low-pressure water according to the pressure change of the rising pipe bend part of the present invention, and FIG. 2 is low-pressure low-pressure water of which the rising pipe bend part pressure has a predetermined pattern. 6 is a graph showing changes in pressure in the upper space of the carbonization chamber and the lower part of the furnace lid from the initial stage of carbonization when the flow rate is controlled.
【００２０】図１において、１はコークス炉、２はコー
クス炉１の炭化室、３は炭化室２の窯口に装着した炉
蓋、４は炭化室２の炉端に立設した上昇管、５は上昇管
４と集気本管６とを連結するベンド管、７はベンド管５
の下部に設けた皿弁、８はベンド管５の皿弁７の上方に
設けた低圧安水のスプレーノズルで、流量調整弁９を介
して低圧安水本管１０と接続され、常時低圧安水がスプ
レーノズル８から噴霧され、乾留中コークス炉ガスを洗
浄冷却するよう構成されている。In FIG. 1, 1 is a coke oven, 2 is a carbonization chamber of the coke oven 1, 3 is a furnace lid attached to the kiln opening of the carbonization chamber 2, 4 is an ascending pipe erected at the furnace end of the carbonization chamber 2, 5 Is a bend pipe that connects the ascending pipe 4 and the air collecting main pipe 6, and 7 is a bend pipe 5.
Is a low-pressure low-pressure water spray nozzle provided above the dish valve 7 of the bend pipe 5, and is connected to the low-pressure low-pressure water main pipe 10 via a flow rate adjusting valve 9 to constantly provide low-pressure Water is sprayed from the spray nozzle 8 and is configured to wash and cool the coke oven gas during carbonization.
【００２１】１１は上昇管４のベンド管５部に設置した
圧力計、１２は炉内圧制御部で、入力キーボード１３か
ら予め求めた炭化室各部の圧力に基づき、乾留初期は炭
化室２の上部空間１４の圧力が０ｍｍＨ2Ｏとなるよ
う、また、乾留中期から末期にかけては炉蓋３下部の圧
力が０ｍｍＨ2Ｏとなるように、図２に示すベンド部の
圧力パターンが予め入力設定されており、圧力計１１か
ら連続的に入力されるベンド部の圧力変化に応じて、低
圧安水の流量調整弁９を制御し、スプレーノズル８から
の低圧安水の流量を調整し、図２に示すベンド部の圧力
パターンに追従させ、乾留初期は炭化室２の上部空間１
４の圧力を０ｍｍＨ2Ｏに、乾留中期から末期にかけて
は炉蓋３下部の圧力を０ｍｍＨ2Ｏに保持するよう構成
されている。なお、１５は炉内圧制御部１２による上昇
管ベンド部の圧力変化を示すモニタテレビ、１６は炉蓋
３下部の圧力計測点、１７は炭化室２に装入された装入
炭である。Reference numeral 11 is a pressure gauge installed in the bend pipe 5 part of the ascending pipe 4, 12 is a furnace pressure control part, which is based on the pressure of each part of the carbonization chamber previously obtained from the input keyboard 13, and the upper part of the carbonization chamber 2 in the initial stage of carbonization. The pressure pattern of the bend portion shown in FIG. 2 is input and set in advance so that the pressure in the space 14 becomes 0 mmH 2 O, and the pressure in the lower part of the furnace lid 3 becomes 0 mmH 2 O from the middle stage to the final stage of carbonization. In accordance with the pressure change in the bend portion continuously input from the pressure gauge 11, the low-pressure low-pressure water control valve 9 is controlled to adjust the low-pressure low-water flow rate from the spray nozzle 8. Following the pressure pattern of the bend part shown, the upper space 1 of the carbonization chamber 2 in the initial stage of carbonization
The pressure of 4 is maintained at 0 mmH 2 O, and the pressure under the furnace lid 3 is maintained at 0 mmH 2 O from the middle stage to the final stage of carbonization. Reference numeral 15 is a monitor television showing a pressure change in the rising pipe bend portion by the furnace pressure control unit 12, 16 is a pressure measurement point under the furnace lid 3, and 17 is charging coal charged in the carbonization chamber 2.
【００２２】上記のとおり構成したことによって、炭化
室２に装入炭１７を装入して乾留するに際し、炉内圧制
御部１２は、圧力計１１から連続的に入力されるベンド
部の圧力変化に応じて、予め入力設定されている図２に
示すベンド部の圧力パターンとなるよう、低圧安水の流
量調整弁９を制御し、スプレーノズル８からの低圧安水
の流量を調整してベンド部の圧力を図２に示す圧力パタ
ーンに追従させる。したがって、炉蓋３下部の圧力は、
図２に示すとおり、乾留初期の十数ｍｍＨ2Ｏから順次
低下し、乾留開始から５時間経過後から乾留末期までほ
ぼ０ｍｍＨ2Ｏに保持される。一方、炭化室２の上部空
間１４の圧力は、乾留開始から５時間経過後までほぼ０
ｍｍＨ2Ｏに保持されたのち、順次上昇するが、乾留末
期にはほぼ５ｍｍＨ2Ｏに保持されている。なお、本実
施例においては、上昇管ベンド部圧力を連続的に制御す
るパターンを実施したが、段階的あるいは一度に制御す
るパターンを実施しても、若干炭化室２の上部空間１４
の圧力、炉蓋下部の圧力が振れるものの、ほぼ同様の効
果が得られることを確認している。With the above configuration, when charging the charging coal 17 into the carbonization chamber 2 and performing carbonization, the reactor internal pressure control unit 12 causes the pressure change in the bend unit continuously input from the pressure gauge 11. 2 is controlled in advance so that the pressure pattern of the bend portion shown in FIG. 2 is preset, and the flow rate adjusting valve 9 for low pressure low water is adjusted to adjust the flow rate of the low pressure low water from the spray nozzle 8. The pressure of the part is made to follow the pressure pattern shown in FIG. Therefore, the pressure under the furnace lid 3 is
As shown in FIG. 2, sequentially reduced from ten mmH 2 O carbonization initial, it is held substantially 0 mm H 2 O after 5 hours from the dry distillation start to dry distillation end. On the other hand, the pressure in the upper space 14 of the carbonization chamber 2 is almost 0 from the start of carbonization until 5 hours have elapsed.
After being held at mmH 2 O, the temperature gradually rises, but is held at about 5 mmH 2 O at the end of dry distillation. In this embodiment, the pattern for continuously controlling the pressure in the bend portion of the ascending pipe is implemented, but even if the pattern for controlling the pressure in the ascending pipe bend is implemented stepwise or once, the upper space 14 of the carbonization chamber 2 is slightly increased.
It was confirmed that almost the same effect can be obtained although the pressure in the lower part and the pressure in the lower part of the furnace cover fluctuate.
【００２３】実施例２ 図３は従来の炉蓋と請求項２で用いる炉蓋とを対比して
示すもので、（ａ）図は従来の炉蓋の要部横断面、
（ｂ）図は請求項２の発明で用いる炉蓋の要部横断面、
図４は請求項２の発明の、上昇管ベンド部圧力を予め定
めた一定圧力に制御した場合の乾留開始からの経過時間
と炭化室上部空間と炉蓋下部の圧力変化の関係を示すグ
ラフである。Example 2 FIG. 3 shows a conventional furnace lid and a furnace lid used in claim 2 in comparison, and FIG. 3 (a) is a cross-sectional view of an essential part of the conventional furnace lid.
(B) is a cross-sectional view of the main part of the furnace lid used in the invention of claim 2,
FIG. 4 is a graph showing the relationship between the elapsed time from the start of carbonization and the pressure change in the upper space of the carbonization chamber and the lower portion of the furnace lid when the pressure in the bend portion of the rising pipe is controlled to a predetermined constant pressure according to the invention of claim 2. is there.
【００２４】図３（ａ）に示す従来の耐火煉瓦３１と本
体金物３２からなる炉蓋３３を、図３（ｂ）に示すとお
り、本体金物３２側両端を垂直方向に幅６０ｍｍ、長さ
１２０ｍｍ切り欠いてガス通路３４の断面積拡大部３５
を設けた炉蓋３６を用い、図４に示すとおり、炉蓋下部
の圧力がほぼ０ｍｍＨ2Ｏとなるよう、前記図１の炉内
圧制御部１２により圧力計１１から連続的に入力される
上昇管ベンド部の圧力変化に応じて、低圧安水の流量調
整弁９を制御し、スプレーノズル８からの低圧安水の流
量を調整し、上昇管ベンド部の圧力を予め定めた図４に
示す７ｍｍＨ2Ｏ一定に保持したところ、図４に示すと
おり、乾留初期から末期の全期間に亘り、炉蓋下部の圧
力がほぼ０ｍｍＨ2Ｏに保持され、しかも、炭化室上部
空間圧力も、乾留初期から末期の全期間に亘り、ほぼ５
ｍｍＨ2Ｏに保持され、負圧になるのを防止することが
できた。また、乾留の全期間にわたって、炉蓋および装
炭口からのガス漏れや、煙突からの黒煙発生は認められ
なかった。As shown in FIG. 3 (b), a furnace lid 33 consisting of a conventional refractory brick 31 and a main body metal piece 32 shown in FIG. 3 (a) has a width of 60 mm and a length of 120 mm vertically on both sides of the main body metal piece 32. The cross-sectional area expansion part 35 of the gas passage 34 is cut out.
As shown in FIG. 4, by using the furnace lid 36 provided with the above, the rise is continuously input from the pressure gauge 11 by the furnace pressure control unit 12 in FIG. 1 so that the pressure in the lower portion of the furnace lid becomes approximately 0 mmH 2 O. The flow control valve 9 for low pressure low-pressure water is controlled according to the pressure change in the pipe bend section, the flow rate of low-pressure low-pressure water from the spray nozzle 8 is adjusted, and the pressure in the rising pipe bend section is determined in advance as shown in FIG. When the pressure was kept constant at 7 mmH 2 O, as shown in FIG. 4, the pressure in the lower part of the furnace lid was maintained at almost 0 mmH 2 O from the initial stage to the final stage of the carbonization, and the pressure in the upper part of the carbonization chamber was also the initial stage of the carbonization. From the end of the term to almost 5
It was held in mmH 2 O and it was possible to prevent a negative pressure. In addition, during the entire period of carbonization, no gas was leaked from the furnace lid or coal charging port, and no black smoke was generated from the chimney.
【００２５】なお、炉内圧の調整には、低圧安水の流量
または圧力を変化させる代わりに、皿弁７の開度を調整
することも有効で、圧力計１１から入力される上昇管ベ
ンド部の圧力変化に応じて、皿弁７の開度を調整したと
ころ、低圧安水の流量または圧力を変化させたのと同様
に、乾留初期から末期の全期間に亘り、炉蓋下部の圧力
がほぼ０ｍｍＨ2Ｏに保持され、しかも、炭化室上部空
間圧力も、乾留初期から末期の全期間に亘り、ほぼ５ｍ
ｍＨ2Ｏに保持され、負圧になるのを防止できることを
確認している。For the adjustment of the furnace pressure, it is also effective to adjust the opening of the pan valve 7 instead of changing the flow rate or pressure of the low-pressure ammonium water, and the rising pipe bend section input from the pressure gauge 11 is used. When the opening degree of the pan valve 7 was adjusted according to the pressure change, the pressure at the lower part of the furnace lid was kept constant from the initial stage to the final stage of carbonization in the same manner as the flow rate or pressure of the low-pressure ammonium water was changed. It is maintained at approximately 0 mmH 2 O, and the pressure in the upper space of the carbonization chamber is approximately 5 m from the initial stage to the final stage of carbonization.
It has been confirmed that it is possible to prevent the negative pressure from being retained by mH 2 O.
【００２６】[0026]
【発明の効果】以上述べたとおり、この発明方法によれ
ば、炭化室の炉内圧力の負圧化を防止して所定の微陽圧
に保持することができ、炉外からの空気進入に起因する
爆発、発生ガスカロリーの低下、炉体の損傷を防止する
ことができると共に、炉蓋や装炭口からのガス漏れ、燃
焼室へのガス漏れによる煙突からの黒煙発生を防止する
ことができる。As described above, according to the method of the present invention, it is possible to prevent the negative pressure in the furnace of the carbonization chamber and to keep it at a predetermined slight positive pressure. It is possible to prevent explosion, reduction of calorific value of gas generated, damage to furnace body, and also to prevent black smoke from the chimney due to gas leak from the furnace lid and coal charging port and gas leak to the combustion chamber. You can
【図１】この発明の上昇管ベンド部圧力変化に応じて低
圧安水の流量を制御する場合の系統図である。FIG. 1 is a system diagram in the case of controlling the flow rate of low-pressure ammonium hydroxide according to the change in pressure of an ascending pipe bend portion according to the present invention.
【図２】上昇管ベンド部圧力が予め定めた所定の制御パ
ターンとなるよう低圧安水の流量を制御した場合の乾留
初期からの炭化室上部空間と炉蓋下部の圧力の変化を示
すグラフである。FIG. 2 is a graph showing changes in the pressure in the upper space of the carbonization chamber and the lower portion of the furnace lid from the initial stage of carbonization when the flow rate of low-pressure ammonium water is controlled so that the pressure in the bend portion of the rising pipe has a predetermined control pattern. is there.
【図３】図３は従来の炉蓋と請求項２で用いる炉蓋とを
対比して示すもので、（ａ）図は従来の炉蓋の要部横断
面、（ｂ）図は請求項２の発明で用いる炉蓋の要部横断
面である。3A and 3B show a conventional furnace lid and a furnace lid used in claim 2 in comparison with each other. FIG. 3A is a cross-sectional view of a main part of the conventional furnace lid, and FIG. 2 is a cross-sectional view of a main part of a furnace lid used in the second invention.
【図４】上昇管ベンド部圧力を予め定めた一定圧力制御
パターンとなるよう低圧安水の流量を制御した場合の乾
留開始からの経過時間と炭化室上部空間と炉蓋下部の圧
力変化の関係を示すグラフである。FIG. 4 is a relationship between the elapsed time from the start of carbonization and the pressure change in the upper space of the carbonization chamber and the lower part of the furnace lid when the flow rate of low-pressure ammonium water is controlled so that the pressure in the bend of the rising pipe becomes a predetermined constant pressure control pattern. It is a graph which shows.
【図５】低圧安水の流量を乾留時間全般に亘り一定に保
持した場合の乾留開始からの経過時間と上昇管ベンド
部、炭化室上部空間および炉蓋下部の圧力変化の関係を
示すグラフである。FIG. 5 is a graph showing the relationship between the elapsed time from the start of carbonization and the pressure change in the rising pipe bend, the upper space of the carbonization chamber and the lower part of the furnace lid when the flow rate of low-pressure low-pressure water is kept constant throughout the carbonization time. is there.
【図６】安水圧力と炉内各部の圧力との関係を示すグラ
フである。FIG. 6 is a graph showing the relationship between the low water pressure and the pressure of each part in the furnace.
１ コークス炉 ２ 炭化室 ３、３３、３６ 炉蓋 ４ 上昇管 ５ ベンド管 ６ 集気本管 ７ 皿弁 ８ スプレーノズル ９ 流量調整弁 １０ 低圧安水本管 １１ 圧力計 １２ 炉内圧制御部 １３ 入力キーボード １４ 上部空間 １５ モニタテレビ １６ 圧力計測点 １７ 装入炭 ３１ 耐火煉瓦 ３２ 本体金物 ３４ ガス通路 ３５ 断面積拡大部 1 Coke Oven 2 Carbonization Chamber 3, 33, 36 Furnace Lid 4 Ascending Pipe 5 Bend Pipe 6 Air Collection Main 7 Dish Valve 8 Spray Nozzle 9 Flow Control Valve 10 Low Pressure Aqueous Main Pipe 11 Pressure Gauge 12 Furnace Pressure Control 13 Input Keyboard 14 Upper space 15 Monitor TV 16 Pressure measurement point 17 Charging 31 Charcoal bricks 32 Main body hardware 34 Gas passage 35 Cross sectional area expansion part
Claims (2)
圧に保持するコークス炉炉内圧の制御方法において、コ
ークス炉上昇管ベンド部の圧力を連続測定し、このベン
ド部圧力が発生ガス量に対応して予め定めた所定パター
ンとなるように上昇管ベンド部に噴霧している安水の流
量または圧力および／または皿弁開度を調整することを
特徴とするコークス炉炉内圧の制御方法。1. A method for controlling the internal pressure of a coke oven in which the pressure in the coke oven carbonization chamber is maintained at a predetermined slight positive pressure, in which the pressure in the bend section of the coke oven riser pipe is continuously measured, and the pressure in the bend section is the amount of generated gas. Method for controlling the internal pressure of a coke oven, which is characterized by adjusting the flow rate or pressure of the noble water sprayed to the bend part of the ascending pipe and / or the disc valve opening degree so as to form a predetermined pattern corresponding to .
圧に保持するコークス炉炉内圧の制御方法において、炉
蓋耐火物の本体金物側両端を垂直方向に切り欠いてガス
通路の断面積を大きくすると共に、コークス炉上昇管ベ
ンド部の圧力を連続測定し、このベンド部圧力が予め定
めた一定値となるよう、上昇管ベンド部に噴霧している
安水の流量または圧力および／または皿弁開度を調整す
ることを特徴とするコークス炉炉内圧の制御方法。2. A method for controlling a coke oven internal pressure for maintaining a pressure within a coke oven carbonization chamber at a predetermined slight positive pressure, wherein a cross-sectional area of a gas passage is formed by vertically notching both ends of a furnace lid refractory body on the side of the main metal object. And the pressure in the bend section of the ascending pipe of the coke oven are continuously measured, and the flow rate or pressure and / or the pressure of the low water sprayed in the bend section of the ascending pipe are adjusted so that the pressure of the bend section becomes a predetermined constant value. A method for controlling the internal pressure of a coke oven, which is characterized by adjusting a disc valve opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8151619A JP3058085B2 (en) | 1996-05-22 | 1996-05-22 | Control method of coke oven pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8151619A JP3058085B2 (en) | 1996-05-22 | 1996-05-22 | Control method of coke oven pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09310072A true JPH09310072A (en) | 1997-12-02 |
| JP3058085B2 JP3058085B2 (en) | 2000-07-04 |
Family
ID=15522506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8151619A Expired - Lifetime JP3058085B2 (en) | 1996-05-22 | 1996-05-22 | Control method of coke oven pressure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3058085B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020055194A (en) * | 2000-12-28 | 2002-07-08 | 이구택 | apparatus for controlling pressure in cokes oven |
| KR100380733B1 (en) * | 1998-07-21 | 2003-06-18 | 주식회사 포스코 | How to manage negative pressure of coke oven |
| KR100530044B1 (en) * | 2000-12-14 | 2005-11-22 | 주식회사 포스코 | Apparatus for controlling chamber press in cokes oven |
| EP1746142A3 (en) * | 2005-07-20 | 2009-08-05 | Paul Wurth S.A. | Method of reducing polluting emissions from coke ovens, and device and valve for its implementation |
| JP2009286983A (en) * | 2008-06-02 | 2009-12-10 | Jfe Steel Corp | Method and device for controlling coke oven collecting pipe pressure |
| JP2009286982A (en) * | 2008-06-02 | 2009-12-10 | Jfe Steel Corp | Method and device for controlling coke oven collecting pipe pressure |
| KR101287877B1 (en) * | 2011-07-05 | 2013-07-23 | 주식회사 포스코 | Apparatus for controling pressure of coke chamber |
| JP2013542287A (en) * | 2010-10-05 | 2013-11-21 | アルセロールミタル・メジエール・リサーチ・エス・ア | Coke plant and method for controlling the same |
| JP2014210863A (en) * | 2013-04-19 | 2014-11-13 | 新日鐵住金株式会社 | Apparatus and method for adjusting oven internal pressure of coke oven carbonization chamber |
| CN111646815A (en) * | 2020-07-07 | 2020-09-11 | 内蒙古航天红岗机械有限公司 | Anti-blocking method for resin/asphalt carbonization pipeline |
-
1996
- 1996-05-22 JP JP8151619A patent/JP3058085B2/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100380733B1 (en) * | 1998-07-21 | 2003-06-18 | 주식회사 포스코 | How to manage negative pressure of coke oven |
| KR100530044B1 (en) * | 2000-12-14 | 2005-11-22 | 주식회사 포스코 | Apparatus for controlling chamber press in cokes oven |
| KR20020055194A (en) * | 2000-12-28 | 2002-07-08 | 이구택 | apparatus for controlling pressure in cokes oven |
| EP1746142A3 (en) * | 2005-07-20 | 2009-08-05 | Paul Wurth S.A. | Method of reducing polluting emissions from coke ovens, and device and valve for its implementation |
| JP2009286983A (en) * | 2008-06-02 | 2009-12-10 | Jfe Steel Corp | Method and device for controlling coke oven collecting pipe pressure |
| JP2009286982A (en) * | 2008-06-02 | 2009-12-10 | Jfe Steel Corp | Method and device for controlling coke oven collecting pipe pressure |
| JP2013542287A (en) * | 2010-10-05 | 2013-11-21 | アルセロールミタル・メジエール・リサーチ・エス・ア | Coke plant and method for controlling the same |
| US10059884B2 (en) | 2010-10-05 | 2018-08-28 | Arcelormittal Maizieres Research Sa | Coking plant and method for controlling said plant |
| KR101287877B1 (en) * | 2011-07-05 | 2013-07-23 | 주식회사 포스코 | Apparatus for controling pressure of coke chamber |
| JP2014210863A (en) * | 2013-04-19 | 2014-11-13 | 新日鐵住金株式会社 | Apparatus and method for adjusting oven internal pressure of coke oven carbonization chamber |
| CN111646815A (en) * | 2020-07-07 | 2020-09-11 | 内蒙古航天红岗机械有限公司 | Anti-blocking method for resin/asphalt carbonization pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3058085B2 (en) | 2000-07-04 |
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