JP3159418B2 - Soot removal method for high-temperature carbonized gas flow path in molded coke production equipment - Google Patents
Soot removal method for high-temperature carbonized gas flow path in molded coke production equipmentInfo
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- JP3159418B2 JP3159418B2 JP33106693A JP33106693A JP3159418B2 JP 3159418 B2 JP3159418 B2 JP 3159418B2 JP 33106693 A JP33106693 A JP 33106693A JP 33106693 A JP33106693 A JP 33106693A JP 3159418 B2 JP3159418 B2 JP 3159418B2
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- gas
- temperature
- soot
- soot removal
- flow path
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、可燃ガスを熱媒体とし
て直立型連続乾留炉に供給し、成型炭を乾留して成型コ
ークスを製造する連続式成型コークス製造設備におい
て、部分燃焼により熱媒体ガスを昇温する場合の高温乾
留ガス加熱流路の除煤方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous molding coke production facility for supplying a combustible gas as a heat medium to an upright continuous carbonization furnace and carbonizing the coal to produce molded coke. The present invention relates to a method for removing soot from a high-temperature carbonized gas heating channel when heating a gas.
【０００２】[0002]
【従来の技術】この連続式コークス製造設備自体は、従
来から広く知られており、この設備において、炉頂部か
ら排出された発生ガスの一部を循環し、部分燃焼により
加熱し乾留用熱媒体ガスとして再び乾留炉に供給する過
程で、ガス供給管路に煤が付着して、管路を閉塞する場
合がある。2. Description of the Related Art Continuous coke making equipment has been widely known. In this equipment, a part of generated gas discharged from the furnace top is circulated and heated by partial combustion to form a heating medium for dry distillation. In the process of supplying the gas to the carbonization furnace again, soot may adhere to the gas supply pipe and block the pipe.
【０００３】この管路の閉塞防止のために、循環供給さ
れる乾留用熱媒体ガスを加熱する蓄熱装置からのガス
に、酸素を含有するガス（通常は空気）を通すことが、
特公昭６２−４１６３６号公報に記載されている。In order to prevent the blockage of the pipeline, a gas containing oxygen (usually air) is passed through a gas from a heat storage device that heats a circulating and supplied heating medium gas for dry distillation.
It is described in JP-B-62-41636.
【０００４】さらに、特開平５−１７７７９号公報に
は、この連続式コークス製造設備において、乾留炉直近
に高温乾留ガスの一部を空気等の酸素含有ガスで部分燃
焼して昇温させる燃焼用空間を設け、この空間に酸素含
有ガス供給管を開口し、煤の付着自体を低減させること
が開示されている。Further, Japanese Patent Application Laid-Open No. Hei 5-17779 discloses a continuous coke manufacturing facility in which a portion of a high-temperature carbonized gas is partially burned with an oxygen-containing gas such as air in the vicinity of a carbonization furnace to raise the temperature. It is disclosed that a space is provided, an oxygen-containing gas supply pipe is opened in this space, and the adhesion itself of soot is reduced.
【０００５】しかしながら、燃焼空間から乾留炉吹込み
口までの内壁への煤の付着は回避されず、放置すればガ
ス流路が閉塞する。このため、除煤運転は不可欠であ
り、燃焼と除煤を交互に行うことが必要である。しか
も、この操作を効率よく行うためには、適正な除煤ガス
条件及び除煤完了時期の的確な判定に基づく操作によっ
て、初めて安定した長期連続運転が可能となる。[0005] However, the adhesion of soot to the inner wall from the combustion space to the inlet of the carbonization furnace is not avoided, and the gas flow path is closed if left unattended. Therefore, the soot removal operation is indispensable, and it is necessary to alternately perform the combustion and the soot removal. In addition, in order to perform this operation efficiently, stable long-term continuous operation can be performed for the first time by an operation based on appropriate determination of the soot removal gas condition and the soot removal completion timing.
【０００６】もしも、除煤完了時期の判定が、実際の完
了時期よりも遅れて行われると、除煤コストが上昇する
ばかりではなく、未燃焼のＯ2 が乾留炉内に多量に導入
され乾留炉内で成型炭と反応することによりコークス品
質に悪影響を及ぼす。If the determination of the completion time of the soot removal is made later than the actual completion time, not only does the cost of the soot removal increase, but also a large amount of unburned O 2 is introduced into the carbonization furnace, and Reacts with coking coal in the furnace, adversely affecting coke quality.
【０００７】[0007]
【発明が解決しようとする課題】本発明の目的は、乾留
用熱媒体ガスを部分燃焼により加熱するに当たって、酸
素を含有するガスを供給して管路内の煤を燃焼除去する
に際して、適正な除煤用ガス条件及び除煤完了時期を的
確に判定するための手段を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for heating a heating medium gas for carbonization by partial combustion, by supplying a gas containing oxygen to burn and remove soot in a pipeline. It is an object of the present invention to provide means for accurately determining a soot removal gas condition and a soot removal completion time.
【０００８】[0008]
【課題を解決するための手段】本発明の成型コークス製
造設備における高温乾留ガス流路の除煤方法は、高温乾
留ガスの熱媒体を直立型連続乾留炉に供給する羽口の前
に前記高温乾留ガスを部分燃焼する燃焼空間を設けた成
形コークス製造設備の除煤方法において、乾留炉の高温
乾留ガスの燃焼を停止させたのち、前記燃焼空間に酸素
含有ガスをガス温度５００〜７００℃および空塔速度を
０．７〜１．８Ｎｍ／ｓで供給することを特徴とする。 The molded coke of the present invention
Removing soot method of hot dry distillation gas flow path in the granulation equipment, hot dry
Before the tuyere that supplies the heating medium of the distillation gas to the upright continuous carbonization furnace
A combustion space for partially burning the high-temperature carbonized gas.
In the soot removal method of the coke manufacturing equipment, the high temperature of the carbonization furnace
After stopping the combustion of the carbonized gas, oxygen was introduced into the combustion space.
The containing gas and supplying the gas temperature 500 to 700 ° C. and a superficial velocity in 0.7~1.8Nm / s.
【０００９】[0009]
【作用】除煤が必要な流路における煤の付着程度はガ
ス、空気の温度、流量、燃焼時間等の燃焼条件によって
変化し、除煤の所要時間も異なるが、高温乾留ガス加熱
流路下流の壁温度または燃焼ガス中のガス成分（Ｃ
Ｏ2 ，Ｏ2 ）の含有量を、またはその両方を検知するこ
とにより、明確な除煤完了時期を判定できる。また、除
煤用酸素含有ガス温度を５００〜７００℃、高温乾留ガ
ス流路内除煤用酸素含有ガス空塔速度を０．７〜１．８
Ｎｍ／ｓとすることで、安定かつ効率的な除煤ができ
る。[Function] The degree of soot adhesion in the flow path requiring soot varies depending on combustion conditions such as gas, air temperature, flow rate, combustion time, and the required time for soot removal. Wall temperature or gas component in combustion gas (C
By detecting the content of O 2 , O 2 ), or both, it is possible to determine a clear soot removal completion time. Further, the temperature of the oxygen-containing gas for soot removal is 500 to 700 ° C., and the superficial velocity of the oxygen-containing gas for soot removal in the high-temperature dry distillation gas channel is 0.7 to 1.8.
By setting Nm / s, stable and efficient soot removal can be performed.
【００１０】[0010]
【実施例】図１は、本発明を実施した成型コークス製造
設備の概要を示す。FIG. 1 shows an outline of a molding coke manufacturing facility embodying the present invention.
【００１１】同図に示すように、成型炭製造設備１で製
造された成型炭Ａは、直立型連続乾留炉２の頂部から投
入され、直立型連続乾留炉２の中間部の羽口３から導入
される低温乾留ガスＢと、それよりも下方位置の羽口４
から導入される高温乾留ガスＣによって順次加熱乾留さ
れ、得られた成型コークスは、直立型連続乾留炉２の下
部の冷却ゾーンに降下し、底部の羽口５から導入される
冷ガスにＤによって冷却され、排出装置６によって乾留
コークスＥとして切り出される。As shown in FIG. 1, molded coal A produced in a molded coal production facility 1 is introduced from the top of an upright continuous carbonization furnace 2, and is fed from a tuyere 3 at an intermediate portion of the upright continuous carbonization furnace 2. Low-temperature carbonized gas B introduced and tuyere 4 below it
The formed coke is sequentially heated and carbonized by the high-temperature carbonization gas C introduced from the lower part, and falls into the cooling zone at the lower part of the upright continuous carbonization furnace 2, and the cold coke introduced from the tuyere 5 at the bottom by D It is cooled and cut out as carbonized coke E by the discharge device 6.
【００１２】この成型炭Ａの乾留に際して発生したガス
Ｆは、高温及び低温乾留ガスと混合され、炉頂ガスＦと
して、炉頂部から顕熱回収装置７またはガスクーラー８
を経て集塵器９で除塵したのち、一部は回収ガスＧとし
て回収設備１０に送られる。他の大部分は、循環ガスＨ
として循環され、低温乾留ガスＢ、高温乾留ガスＣ、冷
ガスＤとして直立型連続乾留炉２に循環吹き込まれる。The gas F generated during the carbonization of the molded coal A is mixed with high-temperature and low-temperature carbonization gas, and is used as the furnace top gas F from the furnace top through the sensible heat recovery device 7 or the gas cooler 8.
After the dust is removed by the dust collector 9 after passing through, a part of the dust is sent to the collection equipment 10 as the collection gas G. Most of the other is circulating gas H
And circulated and blown into the upright continuous carbonization furnace 2 as a low-temperature carbonization gas B, a high-temperature carbonization gas C, and a cold gas D.
【００１３】循環ガスＨの中の一部は、冷ガスＤとして
乾留炉２の底部に導入され、他の一部は循環ガス加熱器
１１によって加熱されたのち、エジェクター１２を経て
炉内下方からの炉内ガスＫと混合され、低温ガスＢとし
て乾留炉２に導入され、他は、加熱器１３を経て酸素含
有ガスＩとの混合による部分燃焼によって高温にした
後、高温乾留ガスＣとして乾留炉２に導入される。A part of the circulating gas H is introduced into the bottom of the dry distillation furnace 2 as a cold gas D, and the other part is heated by a circulating gas heater 11 and then passed through an ejector 12 from below the furnace. Is introduced into the dry distillation furnace 2 as a low-temperature gas B, and is heated to a high temperature by a partial combustion by mixing with an oxygen-containing gas I via a heater 13 and then carbonized as a high-temperature dry distillation gas C. It is introduced into the furnace 2.
【００１４】１５は、高温乾留ガス羽口４の付着煤の燃
焼除去のための加熱空気送入及び部分燃焼用の酸素含有
ガスのための供給管を示し、後述する燃焼用空間で、高
温乾留ガス送入管１６に開口している。１４は、この送
入空気の加熱のための加熱器を示す。Reference numeral 15 denotes a supply pipe for feeding heated air for burning and removing adhering soot from the high-temperature carbonized gas tuyere 4 and for supplying oxygen-containing gas for partial combustion. It is open to the gas inlet pipe 16. Reference numeral 14 denotes a heater for heating the supplied air.
【００１５】乾留炉２下部より導入した冷却用ガスＤの
一部Ｊは、抽出されず乾留炉内を上昇し、高温乾留ガス
と混合されて発生ＣＯガスと共に、乾留炉炉頂部より炉
頂ガスＦとして回収される。A part J of the cooling gas D introduced from the lower part of the carbonization furnace 2 is not extracted and rises in the carbonization furnace, is mixed with the high-temperature carbonization gas, and is generated together with the generated CO gas together with the CO gas from the furnace top. Collected as F.
【００１６】図２は高温乾留ガスＣの流路端末部を示す
縦断面図で、２０は燃焼用空間、１５はこの部分燃焼室
２０内に開口した酸素含有ガス供給管を示す。また、羽
口４部分には、壁の温度を検出する温度信号検出センサ
２１、及びＯ2 ，ＣＯ2 濃度を検出するガス信号検出セ
ンサ２２がそれぞれ設けられている。FIG. 2 is a longitudinal sectional view showing a flow path terminal portion of the high-temperature carbonized gas C. Reference numeral 20 denotes a combustion space, and reference numeral 15 denotes an oxygen-containing gas supply pipe opened into the partial combustion chamber 20. The tuyere 4 is provided with a temperature signal detection sensor 21 for detecting the temperature of the wall and a gas signal detection sensor 22 for detecting the concentrations of O 2 and CO 2 .
【００１７】除煤後の排ガス成分の測定により、図３
（ａ）のように煤の燃焼量が把握できる。当然のことな
がら、これは排ガス中のＯ2 及びＣＯ2 濃度を検知する
ことにより把握ができる（図３（ｂ）参照）。これと壁
の温度の測定結果を比較すると（図３（ｃ）参照）、煤
の燃焼が終了したタイミング（Ｏ2 ，ＣＯ2 濃度が安定
したタイミング）と、壁温度がピークを示すタイミング
が一致していることがわかる。すなわち、壁温度がピー
クを示すタイミング及び排ガス中のＯ2 ，ＣＯ2濃度が
安定するタイミングが煤の燃焼が終了するタイミングと
一致している。よってこれらの検知により除煤の完了時
期が判断できる。By measuring the exhaust gas components after soot removal, FIG.
The combustion amount of soot can be grasped as shown in FIG. As a matter of course, this can be grasped by detecting the concentrations of O 2 and CO 2 in the exhaust gas (see FIG. 3B). When this is compared with the measurement result of the wall temperature (see FIG. 3C), the timing at which the combustion of the soot is completed (the timing at which the O 2 and CO 2 concentrations are stabilized) and the timing at which the wall temperature shows a peak are one time. You can see that we are doing it. That is, the timing at which the wall temperature shows a peak and the timing at which the concentrations of O 2 and CO 2 in the exhaust gas are stabilized coincide with the timing at which the combustion of soot ends. Therefore, the completion time of soot removal can be determined from these detections.
【００１８】図４は除煤ガスの温度を変化させた場合の
除煤用ガス温度と除煤時間（煤の燃焼が終了するまでの
時間）との関係を示すグラフで、同図に示すように、５
００℃を境にそれ以下の温度では、極端に除煤時間が長
くなっているのがわかる。また、ガス温度を７００℃以
上とした場合、高価な蓄熱式熱風発生器が必要となり、
実機向きではない。また除煤時間短縮の効果も少ない。FIG. 4 is a graph showing the relationship between the soot removal gas temperature and the soot removal time (the time until the completion of soot combustion) when the temperature of the soot removal gas is changed. And 5
It can be seen that at temperatures below 00 ° C., the soot removal time is extremely long. When the gas temperature is set to 700 ° C. or higher, an expensive regenerative hot air generator is required,
Not suitable for a real machine. Also, the effect of reducing the soot removal time is small.
【００１９】図５は除煤用ガスの流速（空塔速度）を変
化させた場合の、除煤用ガス流速とコークスロス割合及
び除煤時間との関係を示すグラフである。なおここでコ
ークスロス割合（％）は、未燃Ｏ2 と反応するＣ量／コ
ークス生産量で表される。FIG. 5 is a graph showing the relationship between the flow rate of soot removal gas, the coke loss ratio, and the time of soot removal when the flow rate of the soot removal gas (superficial velocity) is changed. Here, the coke loss ratio (%) is represented by the amount of C reacting with unburned O 2 / the amount of coke produced.
【００２０】同図に示すように、除煤ガス流速を０．７
Ｎｍ／ｓ未満とした場合、除煤時間が極端に長くなり、
またコークスロス低減効果もない。除煤用ガス流速が
１．８Ｎｍ／ｓを越える場合、コークスロス量が極端に
増加しており、また除煤時間低減の効果もない。以上の
結果より、除煤用ガスを０．７Ｎｍ／ｓ〜１．８Ｎｍ／
ｓで除煤を行うことにより、効率的な除煤運転が可能と
なる。As shown in FIG.
If it is less than Nm / s, the soot removal time becomes extremely long,
Also, there is no coke loss reduction effect. When the gas flow rate for soot removal exceeds 1.8 Nm / s, the coke loss amount is extremely increased, and there is no effect of reducing the soot removal time. From the above results, the gas for soot removal was 0.7 Nm / s to 1.8 Nm / s.
By performing soot removal at s, efficient soot removal operation becomes possible.
【００２１】[0021]
【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.
【００２２】（１）高温乾留ガス加熱流路下流における
壁温度またはガス成分またはその両方を検知することに
よって除煤完了を判断することにより、付着煤量あるい
は除煤条件に拘わらず、除煤完了時期の的確な決定と除
煤時間の制御が可能となる。(1) The completion of the soot removal is determined by detecting the wall temperature and / or the gas component downstream of the high-temperature carbonized gas heating flow path, regardless of the amount of attached soot or the soot removal conditions. It is possible to accurately determine the timing and control the soot removal time.
【００２３】（２）供給する除煤ガスの温度、流量を最
適な条件（５００〜７００℃、０．７〜１．８Ｎｍ／
ｓ）に設定することにより、安定かつ効率的な除煤運転
が可能となる。(2) The temperature and flow rate of the supplied soot removal gas are adjusted under optimum conditions (500 to 700 ° C., 0.7 to 1.8 Nm /
By setting s), stable and efficient soot removal operation becomes possible.
【００２４】（３）その結果、除煤の時間比率，コスト
の最適化、コークスの燃焼ロスの抑制等が実現でき、良
質なコークス品質の確保と直立型連続乾留炉の連続長期
安定運転が同時に達成される。(3) As a result, optimization of the time ratio of soot removal, optimization of cost, suppression of coke combustion loss, and the like can be realized, and high-quality coke quality can be ensured and continuous long-term stable operation of an upright continuous carbonization furnace can be performed simultaneously. Achieved.
【図１】 本発明を適用した成型コークス製造設備の概
要を示す説明図である。FIG. 1 is an explanatory view showing an outline of a molded coke manufacturing facility to which the present invention is applied.
【図２】 高温乾留ガスの流路を示す縦断面図である。FIG. 2 is a longitudinal sectional view showing a flow path of a high-temperature carbonized gas.
【図３】 （ａ）は除煤時間と煤燃焼量の関係を示すグ
ラフ、（ｂ）は除煤時間とＯ2 及びＣＯ2 ガスの濃度の
関係を示すグラフ、（ｃ）は除煤時間と壁温度の関係を
示すグラフである。3A is a graph showing a relationship between a soot removal time and a soot burning amount, FIG. 3B is a graph showing a relationship between a soot removal time and a concentration of O 2 and CO 2 gas, and FIG. 3C is a soot removal time. 6 is a graph showing the relationship between the temperature and the wall temperature.
【図４】 除煤ガスの温度を変化させた場合の除煤用ガ
ス温度と除煤時間（煤の燃焼が終了するまでの時間）と
の関係を示すグラフである。FIG. 4 is a graph showing a relationship between a soot removal gas temperature and a soot removal time (a time until the completion of soot combustion) when the temperature of the soot removal gas is changed.
【図５】 除煤用ガスの流速（空塔速度）を変化させた
場合の、除煤用ガス流速とコークスロス割合及び除煤時
間との関係を示すグラフである。FIG. 5 is a graph showing the relationship between the flow rate of soot removal gas, the coke loss ratio, and the removal time of soot when the flow rate (superficial velocity) of the soot removal gas is changed.
１５ 酸素含有ガス供給管 ２０ 部分燃焼室 ２１ 温度信号検出センサ ２２ ガス信号検出センサ 15 Oxygen-containing gas supply pipe 20 Partial combustion chamber 21 Temperature signal detection sensor 22 Gas signal detection sensor
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平５−17779（ＪＰ，Ａ) 特開 昭61−231087（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C10B 43/10 C10B 53/08 ────────────────────────────────────────────────── (5) References JP-A-5-17779 (JP, A) JP-A-61-231087 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) C10B 43/10 C10B 53/08
Claims (1)
留炉に供給する羽口の前に前記高温乾留ガスを部分燃焼
する燃焼空間を設けた成形コークス製造設備の除煤方法
において、乾留炉の高温乾留ガスの燃焼を停止させたの
ち、前記燃焼空間に酸素含有ガスをガス温度５００〜７
００℃および空塔速度を０．７〜１．８Ｎｍ／ｓで供給
することを特徴とする成型コークス製造設備における高
温乾留ガス流路の除煤方法。[Claim 1 wherein said heat medium of the hot carbonization gases before the tuyere is supplied to an upright continuous carbonization furnace hot carbonization gas partial combustion
In forming coke Manufacturing facilities divided soot method <br/> provided with a combustion space, the combustion of the hot carbonization gases dry distillation furnace is stopped
Chi, an oxygen-containing gas gas temperature in the combustion space 5 00-7
A method for removing soot from a high-temperature carbonized gas flow path in a molded coke production facility, wherein a high-temperature carbonized gas flow path is supplied at a temperature of 00 ° C. and a superficial velocity of 0.7 to 1.8 Nm / s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33106693A JP3159418B2 (en) | 1993-12-27 | 1993-12-27 | Soot removal method for high-temperature carbonized gas flow path in molded coke production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33106693A JP3159418B2 (en) | 1993-12-27 | 1993-12-27 | Soot removal method for high-temperature carbonized gas flow path in molded coke production equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07188667A JPH07188667A (en) | 1995-07-25 |
| JP3159418B2 true JP3159418B2 (en) | 2001-04-23 |
Family
ID=18239481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33106693A Expired - Lifetime JP3159418B2 (en) | 1993-12-27 | 1993-12-27 | Soot removal method for high-temperature carbonized gas flow path in molded coke production equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3159418B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4736400B2 (en) * | 2004-10-29 | 2011-07-27 | Ｊｆｅスチール株式会社 | Method for removing carbon adhering to coke oven carbonization chamber |
| JP4666114B2 (en) * | 2009-08-10 | 2011-04-06 | Ｊｆｅスチール株式会社 | Ferro-coke manufacturing method and manufacturing apparatus |
-
1993
- 1993-12-27 JP JP33106693A patent/JP3159418B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07188667A (en) | 1995-07-25 |
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