JPH0376788A - Drying and heating dry quenching equipment of coke oven - Google Patents
Drying and heating dry quenching equipment of coke ovenInfo
- Publication number
- JPH0376788A JPH0376788A JP21238289A JP21238289A JPH0376788A JP H0376788 A JPH0376788 A JP H0376788A JP 21238289 A JP21238289 A JP 21238289A JP 21238289 A JP21238289 A JP 21238289A JP H0376788 A JPH0376788 A JP H0376788A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- gas
- cooling tower
- combustion
- duct
- 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.)
- Pending
Links
- 239000000571 coke Substances 0.000 title claims abstract description 53
- 238000010791 quenching Methods 0.000 title abstract 3
- 230000000171 quenching effect Effects 0.000 title abstract 3
- 238000001035 drying Methods 0.000 title description 23
- 238000010438 heat treatment Methods 0.000 title description 23
- 238000001816 cooling Methods 0.000 claims abstract description 86
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000007664 blowing Methods 0.000 claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 abstract description 39
- 239000000567 combustion gas Substances 0.000 abstract description 35
- 239000007789 gas Substances 0.000 abstract description 35
- 239000000446 fuel Substances 0.000 abstract description 15
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 239000003245 coal Substances 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 239000000779 smoke Substances 0.000 abstract 1
- 239000011449 brick Substances 0.000 description 28
- 238000004891 communication Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 239000011261 inert gas Substances 0.000 description 6
- 239000002737 fuel gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Coke Industry (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、コークス乾式消火設備を建造したときあるい
は定期点検後において、冷却塔内部や煙道の耐火物を加
熱して所定温度まで昇温させるコークス乾式消火設備の
乾燥昇温方法に関する。Detailed Description of the Invention "Industrial Application Field" The present invention is used to heat the refractories inside the cooling tower and the flue to a predetermined temperature when a coke dry extinguishing system is constructed or after periodic inspection. This invention relates to a method for increasing the drying temperature of coke dry extinguishing equipment.
「従来の技術」
コークス乾式消火設備はコークス炉で焼成された赤熱の
コークスを不活性ガスを利用して冷却するものであり、
第6図にその一例を示す。図中1は冷却塔であり、上部
から投入された赤熱コークスは冷却塔l内を降下しなが
ら下部から吹き込まれた低温の不活性ガスによって冷却
され、下部開口(図示せず)から排出される。一方、冷
却塔lの上部からは加熱された不活性ガスが煙道2へ吐
出され、この不活性ガスは除塵器によって除塵された後
ボイラ3に入る。ここで不活性ガスは熱回収されるに伴
い冷却され、循環ファン4で昇圧されて再び冷却塔1へ
至る。``Prior art'' Coke dry extinguishing equipment uses inert gas to cool red-hot coke fired in a coke oven.
An example is shown in FIG. In the figure, 1 is a cooling tower, and the red hot coke introduced from the top is cooled by low-temperature inert gas blown from the bottom while descending inside the cooling tower, and is discharged from the bottom opening (not shown). . On the other hand, heated inert gas is discharged from the upper part of the cooling tower 1 to the flue 2, and this inert gas enters the boiler 3 after being removed by a dust remover. Here, the inert gas is cooled as heat is recovered, and the pressure is increased by the circulation fan 4 and the inert gas reaches the cooling tower 1 again.
上記したコークス乾式消火設備においては、ボイラチュ
ーブを洗浄するためボイラを加熱するソーダ煮、あるい
は冷却塔内や除塵器のレンガの乾燥および当該プラント
を本運転するに先立ってプラント全体を通常運転時の温
度まで上げるための昇温くこの明細書においては、双方
−括して乾燥昇温と呼ぶ)を必要とする。In the above-mentioned coke dry fire extinguishing equipment, the boiler is heated with soda boiling to clean the boiler tubes, the bricks in the cooling tower and the dust remover are dried, and the entire plant is heated during normal operation prior to the actual operation of the plant. (In this specification, both are referred to collectively as dry heating) to raise the temperature.
コークス乾式消火設備において従来片われている乾燥昇
温方法を第5図に従って説明すると、冷却塔lの側下部
に設置された燃焼装置6からは高温の燃焼ガスが冷却塔
側壁を貫通するダクト6aを介して冷却塔1内に導入さ
れ、該燃焼ガスは通常運転時と同様冷却塔l下部から吹
き込まれるガスと混合されて、適当な温度まで下げられ
る。このようにガスを混合させるのは、冷却塔1内周の
レンガの昇温は例えば100℃/日といった緩慢な速度
で行わなければならず、これに対応して混合ガスの温度
を序々に高めていく必要があること、並びに最終的に消
火設備系を操業時と同じような温度分布パターンにする
ことを目的とするが、ダクト6aが挿入される冷却塔1
の下部は通常の操業時において低く、これに比べて燃焼
ガスの温度は非常に高いので、低温度のガスを混合させ
てレンガに熱的なダメージを与えないようにするためで
ある。なお、混合ガスの温度調整は燃焼ガスの温度及び
この容量と低温の吹き込みガスの容量(このガス吹き込
み量は、冷却塔下部のダンパ7で調整する)の調整で行
われ、燃焼ガスの温度調整は、燃焼装置6での燃料供給
量、空燃比の調節で行われる。The dry heating method conventionally used in coke dry extinguishing equipment will be explained with reference to FIG. The combustion gas is introduced into the cooling tower 1 through the cooling tower 1, and the combustion gas is mixed with gas blown from the lower part of the cooling tower 1, as in normal operation, and is lowered to an appropriate temperature. In order to mix the gases in this way, the temperature of the bricks on the inner periphery of the cooling tower 1 must be raised at a slow rate of, for example, 100°C/day, and the temperature of the mixed gas must be gradually increased accordingly. Although the purpose is to ultimately make the fire extinguishing equipment system have a temperature distribution pattern similar to that during operation, the cooling tower 1 into which the duct 6a is inserted
The lower part of the brick is low during normal operation, and the temperature of the combustion gas is very high compared to this, so this is to prevent thermal damage to the bricks by mixing the low temperature gas. The temperature of the mixed gas is adjusted by adjusting the temperature and volume of the combustion gas and the volume of low-temperature blown gas (the amount of gas blown is adjusted by the damper 7 at the bottom of the cooling tower). This is performed by adjusting the fuel supply amount and air-fuel ratio in the combustion device 6.
乾燥昇温中もコークス乾式消火設備は、通常時と同様な
運転状態となっていて、循環ファン4は稼働中である。Even during the dry temperature rising, the coke dry extinguishing equipment is in the same operating state as in normal times, and the circulation fan 4 is in operation.
上記燃焼ガスと冷却塔下部の吹き込みガスの混合ガスは
冷却塔l内周に敷設したレンガを加熱し、その後冷却塔
上部の連通部を通って煙道2内に流れ込み、煙道2に設
置された除塵器内層のレンガを加熱する。そして、ボイ
ラ3に至りここで冷却された後、循環ファン4に至って
後段へ圧送される。そして、大部分のガスは下部放散管
8を経て大気に放散されるものの、その−部のガスは再
び下部開口から冷却塔1内に戻される。The mixed gas of the above-mentioned combustion gas and the gas blown into the lower part of the cooling tower heats the bricks laid on the inner periphery of the cooling tower 1, and then flows into the flue 2 through the communication part at the upper part of the cooling tower. The bricks in the inner layer of the dust eliminator are heated. After reaching the boiler 3 and being cooled there, it reaches the circulation fan 4 and is sent under pressure to the subsequent stage. Although most of the gas is diffused into the atmosphere through the lower diffusion pipe 8, the negative part of the gas is returned to the cooling tower 1 through the lower opening.
ここで、冷却塔1上部に設けたブリチャンバ1aは乾燥
昇温末期において非常に高い温度に上昇させる必要があ
る。プリチャンバには通常操業時ガスが流れないが、乾
燥昇温時は、ブリチャンバla頂部のコークス装入口に
煙突9を仮設し、混合ガスが流れる様にしており、特に
乾燥昇温末期において高温の混合ガスを多量に通過させ
ることにより、プリチャンバlaの内周に敷設されたレ
ンガを加熱させる工夫も行っている。Here, the temperature of the brie chamber 1a provided at the upper part of the cooling tower 1 needs to be raised to a very high temperature at the end of the temperature rise for drying. Gas does not flow into the prechamber during normal operation, but during drying and heating, a chimney 9 is temporarily installed at the coke charging inlet at the top of the prechamber la to allow the mixed gas to flow, especially at the end of drying and heating. By passing a large amount of gas, the bricks placed around the inner periphery of the prechamber la are heated.
「発明が解決しようとする課題」
ところで、乾燥昇温工程において冷却塔1内に敷設され
た耐火レンガは前記したように操業時と同様な温度分布
、すなわち上部を高温、下部を低温となるように加熱す
る必要がある。しかしながら、前記した従来の乾燥昇温
方法では、燃焼ガスを冷却塔1の下部から吹き込む方法
であるため、温度分布が理想的な温度分布とは逆に、下
部側が高温上部が低温になりがちである。"Problem to be Solved by the Invention" By the way, during the drying temperature raising process, the refractory bricks laid in the cooling tower 1 have a temperature distribution similar to that during operation, that is, a high temperature at the top and a low temperature at the bottom. It needs to be heated to. However, in the conventional dry heating method described above, combustion gas is blown into the cooling tower 1 from the bottom, so the temperature distribution tends to be high at the bottom and low at the top, contrary to the ideal temperature distribution. be.
このような不具合を回避するために少なくともブリチャ
ンバla内周のレンガを高温に加熱するには、温度を下
げた混合ガスを多量に吹き込む必要がある。温度を下げ
るのは冷却塔下部の温度を上昇させないためであり、多
量に吹き込むのはブリチャンバ1aに流入するガス温度
が低下するのを防ぐためである。In order to heat at least the bricks on the inner periphery of the brick chamber la to a high temperature in order to avoid such problems, it is necessary to blow a large amount of mixed gas at a lower temperature. The reason for lowering the temperature is to prevent the temperature at the lower part of the cooling tower from rising, and the reason for blowing in a large amount is to prevent the temperature of the gas flowing into the brie chamber 1a from decreasing.
しかし、この場合、以下の問題が生じる。However, in this case, the following problem occurs.
A 大型の燃焼装置6が必要となる。A: A large combustion device 6 is required.
バーナ自身が大容量となるため高価になる。The burner itself has a large capacity and is therefore expensive.
一方、乾燥用燃焼装置6ではバーナだけでなく、燃焼空
気用送風機、燃焼空気配管、燃料ガス配管、燃料ガス昇
圧機、各種弁等が必要であり、燃焼装置6が大型となる
とこれら補機類も大型となる。また、燃焼装置や補機、
配管類の設置のため、コークス乾式消火設備内に多くの
スペースが必要となり、レイアウト上の制限も大きい。On the other hand, the drying combustion device 6 requires not only a burner, but also a combustion air blower, combustion air piping, fuel gas piping, a fuel gas booster, various valves, etc. If the combustion device 6 becomes large, these auxiliary devices are required. It will also be large. In addition, combustion equipment and auxiliary equipment,
Due to the installation of piping, a large amount of space is required within the coke dry extinguishing equipment, and there are significant layout restrictions.
さらに、乾燥昇温工程が終了すると燃焼装置等は撤去す
ることとなり、通常操業時においてその配置スペースは
無駄になる。従って、上記装置類や配置スペースの大型
化は経済上好ましくない。Furthermore, when the drying temperature raising process is completed, the combustion equipment and the like must be removed, and the space for their arrangement is wasted during normal operation. Therefore, it is economically undesirable to increase the size of the devices and their installation space.
B 燃料消費量が増大する。B Fuel consumption increases.
多量の燃焼ガスを冷却塔1内に吹き込まなければならな
いことから燃料消費量が増大する。Since a large amount of combustion gas must be blown into the cooling tower 1, fuel consumption increases.
特に、乾燥昇温末期において多量の高温ガスを外部に排
出するため、燃料消費量が増大する。In particular, a large amount of high-temperature gas is discharged to the outside at the end of the drying temperature rise period, which increases fuel consumption.
また、燃焼装置6に接続する燃料配管はかなり遠方から
引いてくることになるが、配管が大径になる程、−時設
置となる配管、支持材や配管スペース等が無駄になる。Furthermore, the fuel pipes connected to the combustion device 6 will be drawn from a considerable distance, and the larger the diameter of the pipes, the more the pipes, supporting materials, pipe space, etc. that are installed will be wasted.
C冷却塔1の下部にダクト挿入用の大型の開口部1bが
必要となる。A large opening 1b for inserting the duct is required at the bottom of the C cooling tower 1.
冷却塔1側壁に設ける開口部1bが大きくなると築炉構
造上好ましくない。また、この開口部1bは、乾燥昇温
工程後に耐火材にて塞いで復旧することとなるが、開口
部1bが大きい程復旧作業が面倒となり、かつ温度降下
を最小限とするため迅速性が要求される復旧作業上支障
を来す。また、乾燥昇温工程においてダクト6aと開口
部lbとの間を気密にすることが難しく、この部分から
炉内の圧力変動により高温ガスが外部に吹き出すおそれ
があり危険である。If the opening 1b provided in the side wall of the cooling tower 1 becomes large, this is not preferable in terms of furnace construction. In addition, this opening 1b will be restored by closing it with a fireproof material after the drying and heating process, but the larger the opening 1b is, the more troublesome the restoration work will be, and the quicker it will be to minimize the temperature drop. This will hinder the required recovery work. In addition, it is difficult to make the space between the duct 6a and the opening lb airtight in the drying temperature raising process, and there is a risk that high temperature gas may blow out from this part due to pressure fluctuations in the furnace, which is dangerous.
D 冷却塔1内に周方向に沿った温度上のアンバランス
が生じる。D A temperature imbalance occurs in the cooling tower 1 along the circumferential direction.
温度上のアンバランスを少なくするには、高温の燃焼ガ
スを、なるべく冷却塔lの中心部から炉内に吹き込むの
が望ましいが、近年コークス乾式消火設備の大型化に伴
い冷却塔1の径が大きくなったので、これが難しい。In order to reduce the temperature imbalance, it is desirable to blow high-temperature combustion gas into the furnace from the center of the cooling tower 1, but in recent years, as coke dry extinguishing equipment has become larger, the diameter of the cooling tower 1 has increased. Now that I'm older, this is difficult.
仮に、冷却塔1の中央部まで達するような長めのダクト
6aを設置する場合、通常鋼板で作られるダクト6a自
体が高温になって自重によりつぶれるおそれがある。ま
た、冷却塔1内でダクトを支持する場合、冷却塔下部に
敷設した冷コークスCで支持することとなるが、冷コー
クスCに着火しないように、ダクト内面をキャスタブル
耐火物等でライニングする必要があり、重量が大になり
、その支持が難しくなる。If a long duct 6a that reaches the center of the cooling tower 1 is installed, there is a risk that the duct 6a itself, which is usually made of a steel plate, will become hot and collapse under its own weight. In addition, when supporting the duct in the cooling tower 1, it will be supported by cold coke C laid at the bottom of the cooling tower, but the inner surface of the duct must be lined with castable refractories to prevent the cold coke C from igniting. This increases the weight and makes it difficult to support.
また、乾燥昇温工程後は燃焼装置6を撤去しなければな
らないが、特に、上記ダクト6aを高温の炉内より撤去
するのは危険作業であり、多くの時間を要する。Further, after the drying and heating process, the combustion device 6 must be removed, but in particular, removing the duct 6a from the high-temperature furnace is a dangerous operation and requires a lot of time.
E 冷却塔1下部の冷コークスCを保護するためその上
面に断熱レンガを敷設する必要が生じる。E In order to protect the cold coke C at the bottom of the cooling tower 1, it becomes necessary to lay insulating bricks on the top surface.
冷却塔l下部の冷コークスC付近に高温の燃焼ガスを直
接吹き込むことから、冷コークスCが着火する恐れがあ
り、これを回避するために冷コークスC上面に断熱レン
ガを敷くことも行っているが、このレンガ敷設作業は大
変面倒であり、長時間を要する。Since high-temperature combustion gas is directly blown into the vicinity of cold coke C at the bottom of cooling tower l, there is a risk that cold coke C may ignite, and to avoid this, insulating bricks are placed on top of cold coke C. However, this brick laying work is very troublesome and takes a long time.
乾燥昇温工程後、冷却塔lより切り出した冷却コークス
中に混入する断熱レンガは後続の高炉には投入できない
のでこれを除かなければならないが、全部のレンガが切
り出されるまで長時間を要する上、このレンガ取り除き
作業のため冷コークスの切り出しが制限され、ひいては
コークス乾式消火設備の操業が制限される。また、レン
ガ取り除き作業はコンベア上のレンガを拾うので大変危
険な作業となる。After the drying and heating process, the insulating bricks mixed into the cooled coke cut out from the cooling tower 1 cannot be fed into the subsequent blast furnace, so they must be removed, but it takes a long time to cut out all the bricks. This brick removal work limits the cutting out of cold coke, which in turn limits the operation of coke dry extinguishing equipment. In addition, the brick removal work involves picking up bricks on the conveyor, which is very dangerous work.
本発明は上記事情に鑑みてなされたもので、燃焼装置及
びダクトの小型簡略化、燃料の削減、乾燥昇温用設備の
設置撤去の容易化、およびこれによる乾燥昇温から通常
操業への移行期間の短縮化が図れるコークス乾式消火設
備の乾燥昇温方法を提供することを目的とするものであ
る。The present invention has been made in view of the above circumstances, and it aims to simplify the size and size of combustion equipment and ducts, reduce fuel consumption, facilitate the installation and removal of drying and heating equipment, and thereby transition from drying and heating to normal operation. The object of the present invention is to provide a drying and heating method for coke dry extinguishing equipment that can shorten the drying period.
「課題を解決するための手段」
本発明では係る目的を達成するために、冷却塔上部のブ
リチャンバ頂部に設けられているコークス装入口に熱風
吹込用ノズルを下方に向けて取り付け、該ノズルから高
温の燃焼ガスを前記冷却塔内に供給することにより当該
コークス乾式冷却設備を乾燥昇温することを特徴として
いる。"Means for Solving the Problems" In order to achieve the above object, the present invention installs a hot air blowing nozzle facing downward to the coke charging port provided at the top of the brie chamber in the upper part of the cooling tower, and blows hot air from the nozzle. The present invention is characterized in that the temperature of the coke dry cooling equipment is increased by supplying combustion gas into the cooling tower.
「作用」
熱風吹込用ノズルを、操業時において最も高温となるブ
リチャンバ頂部のコークス装入口に取り付け、ここから
燃焼ガスを冷却塔内に吹き込むようにしており、冷却塔
内に吹き込まれた燃焼ガスはプリチャンバ1aを加熱し
た後、冷却塔下部から吹き込まれたガスと混合されて適
当な温度まで下げられる。そして、この混合ガスは冷却
塔l内のレンガを加熱しつつ冷却塔上部に至り煙道2側
へ流れる。"Function" A hot air blowing nozzle is attached to the coke charging port at the top of the brie chamber, which is at the highest temperature during operation, and the combustion gas is blown into the cooling tower from here.The combustion gas blown into the cooling tower is After heating the prechamber 1a, it is mixed with gas blown from the lower part of the cooling tower and lowered to an appropriate temperature. Then, this mixed gas reaches the upper part of the cooling tower 1 while heating the bricks in the cooling tower 1, and flows toward the flue 2 side.
上記のように、最も高温にしようとする部分に加熱用の
燃焼ガスを吹き込む構成であるから、乾燥昇温工程にお
けるコークス乾式消火設備系は操業時と同じような理想
的な温度分布パターンとなる。すなわち、冷却塔の上部
は高温となり下部は低温になる。As mentioned above, since the combustion gas for heating is blown into the part that is to be heated to the highest temperature, the coke dry extinguishing equipment system in the dry heating process has an ideal temperature distribution pattern similar to that during operation. . That is, the upper part of the cooling tower becomes hot and the lower part becomes cold.
「実施例」
以下、本発明の一実施例を図面の簡単な説明する。なお
、図において従来例と同一構成要素には同一符号を付し
てその説明を省略する。"Embodiment" Hereinafter, an embodiment of the present invention will be briefly described with reference to the drawings. In the drawings, the same components as in the conventional example are designated by the same reference numerals, and their explanations will be omitted.
まず、本発明方法を説明する前に、本発明方法を実施す
るのに好適なコークス乾式消火設備について説明すると
、第1図に示すようにブリチャンバlaの頂部には赤熱
コークス投入用の装入口19が設けられているが、本発
明はこれを利用するものである。First, before explaining the method of the present invention, a coke dry extinguishing equipment suitable for carrying out the method of the present invention will be explained. As shown in FIG. is provided, and the present invention utilizes this.
すなわち、このコークス装入口19の上部に燃焼装置2
0を設置し、該燃焼装置20から延びるダクト21をコ
ークス装入口19を押通させてその先端を冷却塔l内に
突出させて配置している。That is, the combustion device 2 is installed above the coke charging port 19.
0 is installed, and a duct 21 extending from the combustion device 20 is pushed through the coke charging port 19, with its tip protruding into the cooling tower l.
そして、このダクト21から、高温の燃焼ガスを直接ブ
リチャンバla内に導入して、乾燥昇温を行うものとし
ている。Then, high-temperature combustion gas is directly introduced into the brie chamber la from this duct 21 to perform drying and heating.
第3図に燃焼装置20の具体的な設置例を示す。FIG. 3 shows a specific installation example of the combustion device 20.
燃焼装置20は架橋および装入装置(共に図示せず)の
一部によって支持部材24を介し支持される。燃焼装置
20は一般のバーナと同様、燃料ガス配管、燃焼空気配
管、パイロットバーナ、および失火検知器等を備える。Combustion device 20 is supported via support member 24 by a portion of bridging and charging equipment (both not shown). The combustion device 20 is equipped with a fuel gas pipe, a combustion air pipe, a pilot burner, a misfire detector, etc., like a general burner.
ダクト21は燃焼ガスを冷却塔1内に送る機能のほか、
当該ダクト内でもガスを燃焼させる燃焼筒としての機能
も果たす。In addition to the function of sending combustion gas into the cooling tower 1, the duct 21 also has the function of sending combustion gas into the cooling tower 1.
The duct also functions as a combustion cylinder for burning gas.
また、25は冷却塔1上部のコークス装入口19を塞ぐ
蓋であり、高温ガスが充満する炉内を外部に対して遮断
するとともにダクト21の挿通を許容するものである。Further, 25 is a lid that closes the coke charging port 19 in the upper part of the cooling tower 1, which blocks the inside of the furnace filled with high-temperature gas from the outside and allows the duct 21 to pass therethrough.
蓋25は通常鋼板で作られ、内側には熱から保護するた
めに保温材26が張設されている。また、蓋25の外周
部は冷却塔1との間に水封が施されていて、冷却塔l内
部を気密に保持できるようになっているが、これは通常
操業時に使用される炉蓋と同じである。The lid 25 is usually made of a steel plate, and a heat insulating material 26 is stretched on the inside to protect it from heat. Additionally, a water seal is placed between the outer periphery of the lid 25 and the cooling tower 1 to keep the inside of the cooling tower 1 airtight, but this is different from the furnace lid used during normal operation. It's the same.
次に、上記コークス乾式消火設備を用いて本発明方法に
ついて説明する。Next, the method of the present invention will be explained using the above coke dry extinguishing equipment.
冷却塔1上部のコークス装入口19の上方に設けた燃焼
装置20からは高温の燃焼ガスが蓋25を押通するダク
)21を介して冷却塔1内に導入される。該燃焼ガスは
通常運転時と同様冷却塔1下部から吹き込まれるガスと
混合されて、適当な温度まで下げられる。そして、第2
図に示すように、冷却塔1上部の連通部28を経て煙道
2に至り、そこからさらにボイラ3を経て循環ファン4
にて後段へ圧送される。そして、大部分のガスは下部放
散管8から大気に放散され、一部のガスは再び冷却塔l
の下部開口から冷却塔l内に戻される。High-temperature combustion gas is introduced into the cooling tower 1 from a combustion device 20 provided above the coke charging port 19 at the top of the cooling tower 1 via a duct 21 that passes through a lid 25 . The combustion gas is mixed with gas blown from the lower part of the cooling tower 1 as in normal operation, and the temperature is lowered to an appropriate temperature. And the second
As shown in the figure, it passes through the communication part 28 at the top of the cooling tower 1 to reach the flue 2, and from there it passes through the boiler 3 and then the circulation fan 4.
is pumped to the subsequent stage. Most of the gas is then dissipated into the atmosphere from the lower dispersion pipe 8, and some of the gas is returned to the cooling tower.
is returned into the cooling tower l through the lower opening of the cooling tower l.
上記燃焼ガスと冷却塔下部の吹き込みガスの混合カスは
、冷却室1の内周に敷設されたレンガを加熱することと
なるが、加熱対象となるレンガの目標加熱温度は、冷却
塔1の下部、上部のブリチャンバla、煙道連通部28
、煙道2とおのおの異なり、ブリチャンバla>煙道連
通部28〉煙道2〉冷却塔下部の順に温度が下がるのが
理想的である。本発明方法では従来例とは逆に、より高
温とすべきブリチャンバlaから燃焼ガスを供給する構
成であるため、高温にすべき箇所を高温とし、低温にす
べき箇所を低温にすることができる。The mixture of the combustion gas and the gas blown into the lower part of the cooling tower heats the bricks laid on the inner periphery of the cooling chamber 1, but the target heating temperature of the bricks to be heated is the lower part of the cooling tower 1. , upper brie chamber la, flue communication part 28
, and the flue 2. Ideally, the temperature decreases in the following order: brie chamber la > flue communication section 28 > flue 2 > lower part of the cooling tower. Contrary to the conventional method, in the method of the present invention, the combustion gas is supplied from the brie chamber la that should be heated to a higher temperature, so the areas that should be heated to a higher temperature can be heated to a higher temperature, and the areas that should be lowered to a lower temperature can be lowered to a lower temperature. .
すなわち、燃焼装置20より発生した燃焼ガスはブリチ
ャンバ1aを加熱した後、自身はそのため少し温度が下
がりつつ、その後、煙道連通部28を経て煙道2に至る
。煙道連通部28を構成する小煙道28aおよび円環煙
道28bは冷却塔1のうち、最も大量の耐火材(レンガ
)が使用される部分であり、本発明方法では、従来室に
較べ、より高温のガスを流せることにより、この部分を
有効に加熱するこ−とができる。他方、冷却塔1下部の
側壁部分はレンガの量が少ない箇所であり、通常の操業
中でも比較的温度が低い箇所である。この部分に燃料ガ
スは十分流れないが、ダク)21から供給される燃焼ガ
スおよび加熱されて高温になったブリチャンバ1aのレ
ンガからの輻射熱によって、必要な温度に加熱できる。That is, after the combustion gas generated from the combustion device 20 heats the combustion chamber 1a, the temperature of the combustion gas itself decreases a little, and then reaches the flue 2 through the flue communication part 28. The small flue 28a and the circular flue 28b constituting the flue communication section 28 are the parts of the cooling tower 1 where the largest amount of refractory material (bricks) is used, and in the method of the present invention, compared to the conventional room, By flowing higher temperature gas, this area can be effectively heated. On the other hand, the side wall portion at the bottom of the cooling tower 1 is a place where there is a small amount of bricks, and the temperature is relatively low even during normal operation. Although fuel gas does not flow sufficiently into this part, it can be heated to the required temperature by the combustion gas supplied from the duct 21 and the radiant heat from the heated bricks in the high temperature chamber 1a.
なお、冷却塔1下部の鋼製のガス吹込装置29を輻射熱
から保護するため、その上部に冷コークスCを充填する
が(本発明方法では、温度が低いので冷コークスは必ず
しも必要ではない)、冷却塔下部側壁部のレンガおよび
冷コークスCの温度が上がりすぎないように、また、煙
道連通部28、煙道2へと流れるガス温度を調整するた
めに、従来例と同様、ガス吹込ダンパ7を調整し、吹込
装置29を介して冷却ガスを冷却塔1内に流すようにし
ている。Note that in order to protect the steel gas blowing device 29 at the bottom of the cooling tower 1 from radiant heat, the upper part is filled with cold coke C (in the method of the present invention, cold coke is not necessarily necessary since the temperature is low). In order to prevent the temperature of the bricks and cold coke C on the lower side wall of the cooling tower from rising too much, and to adjust the temperature of the gas flowing into the flue communication section 28 and the flue 2, a gas blowing damper is used as in the conventional example. 7 is adjusted so that the cooling gas flows into the cooling tower 1 via the blowing device 29.
冷却塔l内のレンガの昇温は序々に行う必要があり、こ
れに対処すべく燃焼ガスの温度を序々に上げることとな
るが、このときの温度制御は、プリチャンバ1aに設置
した温度センサ30により、燃料ガスの流量と空燃比(
すなわち、燃料空気量)をおのおのまたは単独に調整す
ることにより行う。It is necessary to gradually raise the temperature of the bricks in the cooling tower 1, and in order to cope with this, the temperature of the combustion gas is gradually raised.The temperature control at this time is performed by a temperature sensor 30 installed in the prechamber 1a. The fuel gas flow rate and air-fuel ratio (
In other words, this is done by adjusting the amount of fuel and air individually or individually.
また、上記燃焼ガス吹込み用のダクト21は垂直に配置
していることから、従来例のように冷却塔1下部の冷コ
ークスCによってダク1−21を支、持する必要がなく
、しかもキャスタブルライニング等によって熱からの保
護をする必要もなくなる。In addition, since the duct 21 for blowing combustion gas is arranged vertically, there is no need to support and support the duct 1-21 by the cold coke C at the bottom of the cooling tower 1 as in the conventional example, and in addition, the duct 1-21 is castable. There is no need for protection from heat by lining or the like.
従って、軽量化が図れ、支持が容易になる利点がある。Therefore, it has the advantage of being lightweight and easy to support.
また、燃焼装置20の据え付け、撤去ともに容易に行え
る。すなわち、冷却塔1の上部には、通常、コークス運
搬設備の一部として大型のクレーンが配置され、またク
レーンの機械部の補修用としてクレーンの上部の架構1
′、にジブクレーンが配置されるのが一般的であるが、
これらクレーンを有効に利用することによって、燃焼装
置20、ノズル21、支持部材24、および蓋25を一
体構造のまま吊り下げたり吊り上げたりすることができ
、据え付は並びに撤去が容易に行える。Additionally, the combustion device 20 can be easily installed and removed. That is, a large crane is usually placed at the top of the cooling tower 1 as part of coke transport equipment, and a frame 1 at the top of the crane is installed for repairing the mechanical part of the crane.
It is common for a jib crane to be placed at
By effectively utilizing these cranes, the combustion device 20, the nozzle 21, the support member 24, and the lid 25 can be hung or hoisted as an integral structure, and installation and removal can be easily performed.
また、乾燥昇温用燃焼装置20は、燃焼装置本体の他に
、燃焼空気送風機、各種弁類、操作盤、計器等多くの付
属機器を備えており、従来例の如く冷却塔下部に燃焼装
置を設置する方法では、これらの設置場所がなく別々の
場所に設置したり特別にデツキを設けたりする必要があ
ったが、本発明の実施例では燃焼装置20を装入床とほ
ぼ同じレベルに配置しており、広いスペースを有する装
入床に燃焼装置補機類を配置でき、かつ上記クレーンの
使用により据付、撤去及びこれらの移動運搬が容易に行
える利点もある。In addition to the main body of the combustion device, the drying temperature raising combustion device 20 is equipped with many accessory devices such as a combustion air blower, various valves, an operation panel, and gauges. However, in the embodiment of the present invention, the combustion device 20 is placed at almost the same level as the charging floor. This has the advantage that the combustion equipment auxiliary equipment can be placed on the charging floor with a large space, and that installation, removal, and transportation of these items can be easily performed using the crane.
加えて、ダクト21を第4図(イ)に示すように2重ジ
ャケット構造とし、ジャケット部31に燃焼空気の一部
を流す構造とすれば、これが2次燃焼空気として有効に
作用すると同時にダクト21を冷却する役目も果たし、
ダクト強度がより安定する。また、ジャケット部31に
高温燃焼ガスの希釈用空気を流せば、ガス温度を空燃比
に関係なく自由に調整できることとなる。また、これに
より、燃焼空気を必要以上供給(空燃比で温度を調整す
るため)しなくてもよいので、燃焼状態を安定にするこ
とができる。さらに、第4図(ロ)に示すように、タク
ト21の内筒21aに多数の穴32をあけ、ここから2
次空気をダクト内筒21a内に入れるようにすれば、上
記利点に加えてより理想的な燃焼状態を得ることもでき
る。In addition, if the duct 21 is made to have a double jacket structure as shown in FIG. It also plays the role of cooling 21,
Duct strength becomes more stable. Further, by flowing air for diluting high-temperature combustion gas through the jacket portion 31, the gas temperature can be freely adjusted regardless of the air-fuel ratio. Furthermore, since it is not necessary to supply more combustion air than necessary (to adjust the temperature by adjusting the air-fuel ratio), the combustion state can be stabilized. Furthermore, as shown in FIG.
By introducing the secondary air into the duct inner cylinder 21a, in addition to the above-mentioned advantages, a more ideal combustion state can also be obtained.
なお、上記実施例では、燃焼装置20を冷却塔1上部の
コークス装入口19の上側に直接設置した例について説
明したが、これに限られることなく、燃焼装置20を他
の箇所に配置し、それから延びるダクト21をコークス
装入口19に挿通させ、燃焼ガスを冷却塔1上部から吹
き込ませるようにしてもよい。In addition, in the above embodiment, an example was described in which the combustion device 20 was installed directly above the coke charging port 19 at the top of the cooling tower 1, but the combustion device 20 may be placed in another location, A duct 21 extending from the coke charging port 19 may be inserted through the duct 21 to blow combustion gas into the cooling tower 1 from above.
「発明の効果」
以上説明したように本発明によれば、以下の優れた効果
を奏する。"Effects of the Invention" As explained above, the present invention provides the following excellent effects.
■ 操業時において最も高温となるブリチャンバ頂部の
コークス装入口からダクトを介して加熱用燃焼ガスを供
給するようにしており、高温にしたい箇所に高温燃焼ガ
スを供給できることから熱効率に優れ、燃焼装置からの
入熱量が小さくてもこれを有効に利用できるから、燃焼
装置および付帯設備(燃焼空気用ファン等)が小型化で
きる。■ Heating combustion gas is supplied through a duct from the coke charging port at the top of the brie chamber, which is at the highest temperature during operation, and has excellent thermal efficiency because high-temperature combustion gas can be supplied to the location where high temperatures are desired. Even if the amount of heat input is small, it can be used effectively, so the combustion device and ancillary equipment (combustion air fan, etc.) can be downsized.
また、通常操業時のレンガの温度分布とガスの温度分布
を同様にできるので、理想的なコークス乾式消火設備の
乾燥昇温が行える。Furthermore, since the temperature distribution of the bricks and the gas during normal operation can be made to be the same, it is possible to ideally increase the drying temperature of coke dry extinguishing equipment.
■ 熱効率が良いので、燃料消費量が削除でき、省エネ
ルギになる。また、燃料供給系の小型化も図れる。■ Good thermal efficiency reduces fuel consumption and saves energy. Further, the fuel supply system can be downsized.
■ コークス、装入口を利用して燃焼ガスを供給する構
成であるから、従来例のように冷却塔下部に燃焼ガス供
給ダクト挿通用の開口部が不要になる。冷却塔自体がレ
ンガ構造なので開口部が不要になることは構造的に安定
度が増すことにつながる。(2) Since the combustion gas is supplied using the coke charging port, there is no need for an opening at the bottom of the cooling tower for insertion of the combustion gas supply duct, as in the conventional case. Since the cooling tower itself has a brick structure, eliminating the need for openings increases structural stability.
さらに、乾燥昇温後の復旧作業時における冷却塔下部側
壁部の開口部を塞ぐ作業が不要となり、乾燥昇温から通
常運転への移行時間を短縮でき、また、移行作業に伴っ
て発生するレンガの急冷(開口部から多量の冷空気が入
り、炉口から抜けていくこと)を防ぐこともできる。な
お、開口部を塞ぐ作業は高温下の作業を強いられること
から、危険でもあったが、これをなくすことは安全性の
面からも好ましい。Furthermore, it is no longer necessary to close the opening in the lower side wall of the cooling tower during recovery work after drying and heating, which shortens the transition time from drying and heating to normal operation. It can also prevent rapid cooling (a large amount of cold air entering through the opening and escaping through the furnace mouth). It should be noted that the work of closing the opening was dangerous as it required work under high temperatures, but eliminating this is preferable from the standpoint of safety.
加えて、従来用いていた仮設の煙突も不要となる。In addition, the temporary chimney that was previously used is no longer necessary.
■ 冷却塔の水平方向中央部に燃焼ガスを供給できるの
で、冷却塔の周方向の温度均一化が図れる。- Since combustion gas can be supplied to the horizontal center of the cooling tower, the temperature can be made uniform in the circumferential direction of the cooling tower.
■ 燃焼ガス供給部分から冷却塔下部の冷コークスまで
の距離が大きく、冷コークスが高温になることがないの
で着火する心配がない。このため、従来冷コークス上面
を被覆するため行っていた断熱レンガ積みが不要となり
、またこれらの回収作業が不要となるので、本運転への
移行期間がこの点からも短くなる。■ The distance from the combustion gas supply section to the cold coke at the bottom of the cooling tower is large, and the cold coke never reaches high temperatures, so there is no need to worry about it igniting. This eliminates the need for insulating brickwork, which was conventionally performed to cover the top surface of cold coke, and also eliminates the need for recovery work, which shortens the transition period to full-scale operation.
■ ダクトを垂直に配置できるので、従来例のように水
平に配置する場合に比べて曲げがなくなり、その針支持
が簡単となり、構造上も安定する。■ Since the duct can be placed vertically, there is no bending compared to the conventional case where the duct is placed horizontally, making it easier to support the needle and providing structural stability.
また、従来行っていたようなダクト内面へのキャスタブ
ルライニングが不要となり、軽量化が図れるため、据え
付けおよび撤去も容易になる。In addition, there is no need for castable lining on the inner surface of the duct, which was conventionally done, and the weight can be reduced, making installation and removal easier.
第1図ないし第4図(イ)、(ロ)は本発明方法の一実
施例を示し、第1図はコークス乾式消火設備の乾燥昇温
時の概略プロセス図、第2図は冷却塔の縦断面図、第3
図は冷却塔上部の断面図、第4図(イ)はダクト先端の
一例を示す断面図、第4図(ロ)は同ダクトの変形例を
示す断面図、第5図は従来例のコークス乾式消火設備の
乾燥昇温時の概略プロセス図、第6図はコークス乾式消
火設備の全体構成図である。
l・・・・・・冷却塔、
2・・・・・・煙道、
3・・・・・・ボイラ、
4・・・・・・循環ファン、
19・・・・・・コークス装入口、
20・・・・・・燃焼装置、
21・・・・・・ダクト、
24・・・・・・支持部、
25・・・・・・蓋、
26・・・・・・保温材、
28・・・・・・連通部、
第1図Figures 1 to 4 (a) and (b) show an embodiment of the method of the present invention, in which Figure 1 is a schematic process diagram of drying and heating up a coke dry extinguishing equipment, and Figure 2 is a diagram of a cooling tower. Longitudinal sectional view, 3rd
The figure is a cross-sectional view of the upper part of the cooling tower, Figure 4 (a) is a cross-sectional view showing an example of the tip of the duct, Figure 4 (b) is a cross-sectional view showing a modified example of the same duct, and Figure 5 is a conventional coke FIG. 6 is a schematic process diagram of the dry heating process of the dry fire extinguishing equipment, and is an overall configuration diagram of the coke dry fire extinguishing equipment. 1... Cooling tower, 2... Flue, 3... Boiler, 4... Circulation fan, 19... Coke charging inlet, 20... Combustion device, 21... Duct, 24... Support part, 25... Lid, 26... Heat insulation material, 28. ...Communication section, Figure 1
Claims (1)
装入口に熱風吹込用ノズルを下方に向けて取り付け、該
ノズルから高温ガスを前記冷却塔内に供給することを特
徴とするコークス乾式消火設備の乾燥昇温方法。The coke dry extinguishing equipment is characterized in that a hot air blowing nozzle is attached to the coke charging port at the top of the cooling tower so as to face downward, and high temperature gas is supplied from the nozzle into the cooling tower. Warm method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21238289A JPH0376788A (en) | 1989-08-18 | 1989-08-18 | Drying and heating dry quenching equipment of coke oven |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21238289A JPH0376788A (en) | 1989-08-18 | 1989-08-18 | Drying and heating dry quenching equipment of coke oven |
Publications (1)
Publication Number | Publication Date |
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JPH0376788A true JPH0376788A (en) | 1991-04-02 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP21238289A Pending JPH0376788A (en) | 1989-08-18 | 1989-08-18 | Drying and heating dry quenching equipment of coke oven |
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JP (1) | JPH0376788A (en) |
Cited By (6)
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CN101825283A (en) * | 2010-04-30 | 2010-09-08 | 山西太钢不锈钢股份有限公司 | Method for improving thermal efficiency of regenerative heating furnace |
US7949545B1 (en) | 2004-05-03 | 2011-05-24 | The Medical RecordBank, Inc. | Method and apparatus for providing a centralized medical record system |
CN103411232A (en) * | 2013-08-15 | 2013-11-27 | 北京首钢国际工程技术有限公司 | Design and transformation method for double-heat-storage combustion system suitable for coal gas with different heat values |
CN104232113A (en) * | 2013-06-06 | 2014-12-24 | 五冶集团上海有限公司 | Coke dry quenching high-rise steel structure column verticality adjustment bracket and use method thereof |
CN105694923A (en) * | 2016-04-26 | 2016-06-22 | 中冶焦耐工程技术有限公司 | Multi-air-flue automatic air supply adjusting system and method for coke dry quenching boiler |
CN105802642A (en) * | 2016-04-26 | 2016-07-27 | 中冶焦耐工程技术有限公司 | Multi-air-duct star-shaped air supply device of coke dry quenching oven and method for cooling coke in coke dry quenching oven |
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1989
- 1989-08-18 JP JP21238289A patent/JPH0376788A/en active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7949545B1 (en) | 2004-05-03 | 2011-05-24 | The Medical RecordBank, Inc. | Method and apparatus for providing a centralized medical record system |
US8239218B1 (en) | 2004-05-03 | 2012-08-07 | The Medical RecordBank, Inc. | Method and apparatus for providing a centralized medical record system |
CN101825283A (en) * | 2010-04-30 | 2010-09-08 | 山西太钢不锈钢股份有限公司 | Method for improving thermal efficiency of regenerative heating furnace |
CN104232113A (en) * | 2013-06-06 | 2014-12-24 | 五冶集团上海有限公司 | Coke dry quenching high-rise steel structure column verticality adjustment bracket and use method thereof |
CN104232113B (en) * | 2013-06-06 | 2016-06-01 | 五冶集团上海有限公司 | Dry coke quenching high-rise steel structure verticality of stand column adjusting pole and using method thereof |
CN103411232A (en) * | 2013-08-15 | 2013-11-27 | 北京首钢国际工程技术有限公司 | Design and transformation method for double-heat-storage combustion system suitable for coal gas with different heat values |
CN103411232B (en) * | 2013-08-15 | 2015-08-05 | 北京首钢国际工程技术有限公司 | A kind of applicable different calorific value of gas Two-cuff Technique Combustion System Design and remodeling method |
CN105694923A (en) * | 2016-04-26 | 2016-06-22 | 中冶焦耐工程技术有限公司 | Multi-air-flue automatic air supply adjusting system and method for coke dry quenching boiler |
CN105802642A (en) * | 2016-04-26 | 2016-07-27 | 中冶焦耐工程技术有限公司 | Multi-air-duct star-shaped air supply device of coke dry quenching oven and method for cooling coke in coke dry quenching oven |
CN105694923B (en) * | 2016-04-26 | 2018-12-25 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke dry quenching furnace multiple duct gas supply automatic regulating system and method |
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