JPS5855428B2 - Sintering machine exhaust gas extraction treatment method - Google Patents
Sintering machine exhaust gas extraction treatment methodInfo
- Publication number
- JPS5855428B2 JPS5855428B2 JP12772380A JP12772380A JPS5855428B2 JP S5855428 B2 JPS5855428 B2 JP S5855428B2 JP 12772380 A JP12772380 A JP 12772380A JP 12772380 A JP12772380 A JP 12772380A JP S5855428 B2 JPS5855428 B2 JP S5855428B2
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- exhaust gas
- extraction
- duct
- sintering machine
- temperature
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Description
【発明の詳細な説明】
この発明は、焼結排ガスのうち高温排ガスを効率的に抽
出する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for efficiently extracting high-temperature exhaust gas from sintering exhaust gas.
第１図に示す下方吸引式ドワイトロイド式焼結機では、
第２図のａのように排鉱側で温度が高くなるという特徴
的な温度分布があるが、他方焼結操業変動及び排鉱部デ
ッドプレートからの漏風等により第２図す、ｃのごとく
温度分布が変化することがあるっ
これらの特徴をもつ排ガスの高温部を回収することが要
求され、従来、第１図に示す装置系による方法が実施さ
れている。In the downward suction type Dwight Lloyd sintering machine shown in Fig. 1,
As shown in Figure 2 a, there is a characteristic temperature distribution in which the temperature is higher on the ore discharge side, but on the other hand, due to fluctuations in sintering operations and air leakage from the ore discharge dead plate, etc., as shown in Figure 2 and c. It is required to recover the high-temperature part of the exhaust gas, which has such characteristics that the temperature distribution may change, and a method using an apparatus system shown in FIG. 1 has been conventionally implemented.
第１図において、４はウィンドレッグ、５−１〜５−１
１（図では途中の符号を省略）はそれに設置した切替バ
ルブ、７−１〜７−１１（図では途中の符号を省略）は
、ウィンドレッグからの抽出ダクト、８−１〜８＝１１
（図では途中の符号を鳴略）は、それに設置した切替
バルブ、９は抽出排ガスを集合させた抽出メインダクト
である。In Figure 1, 4 is a wind leg, 5-1 to 5-1
1 (middle symbols are omitted in the figure) is a switching valve installed there, 7-1 to 7-11 (middle symbols are omitted in the figure) are extraction ducts from the wind leg, 8-1 to 8 = 11
(In the figure, symbols in the middle are omitted) is a switching valve installed therein, and 9 is an extraction main duct in which extracted exhaust gas is collected.
次に動作について説明すると、第２図の排ガス温度分布
において、高温側排ガスを抽出する場合に、抽出しよう
とする部分のウィンドレッグ切替バルブ５−１〜５−１
１を閉じ、これに対応する切替バルブ８−１〜８−１１
を開き、排ガスを抽出ダクト７−１〜７−１１から、抽
出メインダクト９に導入し、次に集塵機１０を通じ、誘
引ファン１１により点火炉２へ供給していた。Next, to explain the operation, in the exhaust gas temperature distribution shown in Fig. 2, when extracting high temperature side exhaust gas, the wind leg switching valves 5-1 to 5-1 of the part to be extracted
1 is closed, and the corresponding switching valves 8-1 to 8-11
was opened, the exhaust gas was introduced from the extraction ducts 7-1 to 7-11 into the extraction main duct 9, and then passed through the dust collector 10 and supplied to the ignition furnace 2 by the induction fan 11.
このとき第２図に示す排ガス温度分布が点線Ｃのごとく
変化した場合、従来法では、温度分布に対応させ、排ガ
ス温度の低下した部分のウィンドレッグ切替バルブ５−
１．５−２を開にし、対応する抽出ダクト切替バルブ８
−１．８−２を閉じ、低温側ガスを、メインダクト６に
逃がし高温側排ガスのみを抽出していた。At this time, if the exhaust gas temperature distribution shown in FIG. 2 changes as shown by the dotted line C, in the conventional method, the wind leg switching valve 5-
1.5-2 open and the corresponding extraction duct switching valve 8
-1.8-2 was closed, the low temperature side gas was released to the main duct 6, and only the high temperature side exhaust gas was extracted.
従来の排ガス抽出処理装置は、以上のように構成されて
いるので。The conventional exhaust gas extraction treatment device is configured as described above.
（１）新設する焼結機に従来方式を採用することは可能
であるが、既設の焼結機には第１図に示すウィンドレッ
グ切替バルブ５−１〜５−１１．抽出ダクト７〜１〜７
−１１．抽出ダクト切替バルブ８−１〜８−１１．抽出
メインダクト９等の数多くのバルブ、ダクトを必要とす
るので設置するのは困難である。(1) Although it is possible to adopt the conventional method in a newly installed sintering machine, the wind leg switching valves 5-1 to 5-11 shown in FIG. 1 can be used in an existing sintering machine. Extraction duct 7-1-7
-11. Extraction duct switching valves 8-1 to 8-11. It is difficult to install because it requires a large number of valves and ducts such as the extraction main duct 9.
（１′）また、設備可能な場合でも、数多くの切替バル
ブ、抽出ダクトを必要とする為に、設備費が嵩み、整備
性も悪い。(1') Furthermore, even if it is possible to install it, it requires a large number of switching valves and extraction ducts, which increases the equipment cost and has poor maintainability.
（２）第２図のａ、ｂ、ｃのごとく、温度分布が変動し
た場合、高温側のみ抽出する為には、ウィンドレッグ切
替バルブ５−１〜５−１１．抽出ダクト切替バルブ８−
１〜８−１１をその都度開閉し、風量調整する必要があ
る。(2) When the temperature distribution fluctuates as shown in a, b, and c of FIG. 2, in order to extract only the high temperature side, use the wind leg switching valves 5-1 to 5-11. Extraction duct switching valve 8-
1 to 8-11 must be opened and closed each time to adjust the air volume.
という欠点があった。There was a drawback.
この発明は、上記のような従来方法の欠点を除去するた
めになされたものであり、本発明１は、ドワイトロイド
式焼結機において、メイン排ガスダクトの排鉱部側に排
ガス抽出系を設け、該排ガス抽出系内圧力を制御して高
温側ウィンドレッグ部分の排ガスの抽出系への抽出量を
調整することを特徴とする焼結機の排ガス抽出処理法を
提供するものである。This invention was made in order to eliminate the drawbacks of the conventional method as described above, and the present invention 1 is a Dwight Lloyd type sintering machine in which an exhaust gas extraction system is provided on the ore discharge side of the main exhaust gas duct. The present invention provides a method for extracting exhaust gas from a sintering machine, characterized in that the pressure inside the exhaust gas extraction system is controlled to adjust the amount of exhaust gas extracted from the high temperature side wind leg portion into the extraction system.
以下に本発明をさらに詳細に説明する。The present invention will be explained in more detail below.
第３図はこの発明を実施する一装置例で、■の矢印で示
す流れの装置系は、メインダクト６の排鉱側に高温排ガ
ス抽出メインダクト９を取付け、集塵機１０、熱交換器
１３、誘引ファン人口ダンパー１４、誘引ファン１１を
ダクトにて連結し、これをメインダクト６に再び戻すも
のである。FIG. 3 shows an example of an apparatus for carrying out the present invention. The apparatus system shown by the arrow (■) has a high-temperature exhaust gas extraction main duct 9 installed on the ore discharge side of the main duct 6, a dust collector 10, a heat exchanger 13, The induced fan artificial damper 14 and the induced fan 11 are connected by a duct, which is returned to the main duct 6.
又、■の矢印で示す流れの装置系は、メインダクト６の
排鉱側に高温排ガス抽出ダクト９を結合させ、集塵機１
０、誘引ファン人口ダンパー１４．誘引フアン１１をダ
クトにて連結し、点線のダクト１５より、焼結機の点火
装置２の焼焼用空気として利用するものである。In addition, the flow device system shown by the arrow (■) connects the high-temperature exhaust gas extraction duct 9 to the ore discharge side of the main duct 6, and connects the dust collector 1.
0, induced fan population damper 14. The induction fan 11 is connected by a duct, and the duct 15 indicated by the dotted line is used as sintering air for the ignition device 2 of the sintering machine.
但し、熱交換機はこの場合、設置しないものとする。However, a heat exchanger will not be installed in this case.
以上２つの本発明実施例において、高温側排ガス抽出方
法として、抽出域、非抽出域との切替を従来のダンパ切
替による機械的方法によらず、排ガス抽出系内に設置し
た誘引ファン１１の特性を入口ダンパ１４の開閉のみに
より変化させ、吸引風量を調整することにより、排鉱側
ウィンドレッグ部分の高温側排ガスを抽出するものであ
る。In the above two embodiments of the present invention, as a high-temperature side exhaust gas extraction method, the switching between the extraction zone and the non-extraction zone is not performed by the conventional mechanical method of damper switching, but the characteristics of the induction fan 11 installed in the exhaust gas extraction system. By changing only by opening and closing the inlet damper 14 and adjusting the suction air volume, the high temperature side exhaust gas from the ore discharge side wind leg portion is extracted.
第４図イ８口は本発明において、圧力分布、排ガス流れ
を、上記■の矢印で示した流れの装置系の抽出排ガスを
メインダクトに戻す時の例で説明したものである。FIG. 4A8 shows an example of the pressure distribution and exhaust gas flow in the present invention when the exhaust gas extracted from the device system with the flow indicated by the arrow (■) is returned to the main duct.
第４図口において、実線の線図は、ベース第２図におけ
るａの温度分布の時の負圧分布であり。In the opening of FIG. 4, the solid line diagram is the negative pressure distribution when the temperature distribution is a in the base FIG. 2.
矢印はその時のガス流方向を示している。The arrow indicates the gas flow direction at that time.
このベース時より、第２図における温度分布がＣのごと
く変化し、排ガス抽出量を減少させる時、入口ダンパ１
４を所要量だけ閉めると、誘引ファンの負圧は低下し１
点線のような負圧分布となり、負圧が低下した分だけメ
インダクト系の風量分配点（排風方向分岐点）は、右に
ずれ（Ａ−）Ｃ） 、結果として温度分布がａからＣへ
変化した分だけ。From this base time, when the temperature distribution in Figure 2 changes as shown in C and the amount of exhaust gas extracted is reduced, the inlet damper 1
When 4 is closed by the required amount, the negative pressure of the induced fan decreases and 1
The negative pressure distribution becomes as shown by the dotted line, and the air volume distribution point (exhaust direction branch point) of the main duct system shifts to the right by the amount that the negative pressure decreases (A-)C), and as a result, the temperature distribution changes from a to C. Only the amount that changed to .
抽出ガス量は変化する。The amount of extracted gas varies.
このようにして、誘引ファンの人口ダンパ１４を制御す
ることにより抽出ガス量は、連続的に変化させることが
できる。In this way, by controlling the artificial damper 14 of the induction fan, the amount of extracted gas can be changed continuously.
以上のようにして、第３図中、■、■の矢印で示す流れ
の装置系を用いた両実施例とも、高温側の排ガス抽出を
誘引ファンの入口ダンパ１４だけで達成できる。As described above, in both embodiments using the flow device systems shown by the arrows ■ and ■ in FIG. 3, exhaust gas extraction on the high temperature side can be achieved only by the inlet damper 14 of the induction fan.
本発明２は１本発明１に加えて焼結操業変動及び排鉱部
プツトプレートからの漏風により排ガス温度が低下する
部分の排ガスをバイパスダクト１６により、非抽出域の
メインダクトに逃すことによりできるだけ高い温度の排
ガス回収をすることを特鉄とする焼結機の排ガス抽出処
理法を提供するものである。The present invention 2 has the following feature: 1 In addition to the present invention 1, the temperature of the exhaust gas in the area where the exhaust gas temperature decreases due to fluctuations in sintering operation and air leakage from the put plate in the ore discharge section is released to the main duct in the non-extraction area through the bypass duct 16, thereby increasing the temperature as much as possible. The present invention provides a method for extracting exhaust gas from a sintering machine, which is specially designed to recover exhaust gas at high temperatures.
以下にこの発明の詳細説明を行う。The present invention will be explained in detail below.
第３図において５はウィンドレッグ切替バルブ。In Fig. 3, 5 is a wind leg switching valve.
７は抽出ダクト、８は抽出ダクト切替バルブであり、１
６は低温排ガスのバイパスダクトである。7 is an extraction duct, 8 is an extraction duct switching valve, 1
6 is a bypass duct for low temperature exhaust gas.
次に動作について説明すると、第２図の排ガス温度分布
において、操業変動等によりＣのような分布になり、排
鉱端が温度低下した場合に１本発明は有効となり、温度
分布に対応させ第３図のウィンドレッグ切替バルブ５−
１ｏ 、ｓ−ｉ ｉを閉じ、抽出ダクト切替バルブを開
にし排ガスをバイパスダクト１６に導き、メインダクト
排ガス非抽出域にもどすことにより、低温排ガスを高温
排ガスと混合させ、抽出ガス温度を低下させることなく
、高温の排ガスのみを抽出しようとするものである。Next, to explain the operation, the present invention becomes effective when the exhaust gas temperature distribution shown in Fig. 2 becomes a distribution like C due to operational fluctuations and the temperature at the discharge end decreases. Wind leg switching valve 5- in Figure 3
1o, s-i is closed, the extraction duct switching valve is opened, the exhaust gas is guided to the bypass duct 16, and the exhaust gas is returned to the main duct exhaust gas non-extraction area, thereby mixing the low-temperature exhaust gas with the high-temperature exhaust gas and lowering the extracted gas temperature. The aim is to extract only high-temperature exhaust gas.
以下に具体的実施例を示す。Specific examples are shown below.
実施例１は本発明１に関するものである。Example 1 relates to the present invention 1.
第３図の焼結機において、１，０ＯＯＴ／Ｈの生産を行
っている時メインダクト６を流れている排ガス量は、２
８，０ＯＯＮｍ／ｍｉｎで温度は平均１５０℃であるが
１本発明により１０７°Ｃの排ガス、２３． ＯＯＯＮ
ｒｎ／ｒｎｉ ｎと３５０℃の排ガ、ス５．０ＯＯＮ”
／、、ｉ。In the sintering machine shown in Fig. 3, the amount of exhaust gas flowing through the main duct 6 when producing 1,00T/H is 2
At 8,0 OONm/min, the average temperature is 150°C, but according to the present invention, the exhaust gas temperature is 107°C, 23. OOON
rn/rni n and 350℃ exhaust gas, 5.0OOON”
/,,i.
に分離、抽出が可能となり、この高温排ガスにより同一
熱量を回収する場合でも小さな熱交換機で可能となり、
熱回収効率が高くなった。This makes it possible to separate and extract the same amount of heat from this high-temperature exhaust gas using a small heat exchanger.
Heat recovery efficiency has increased.
又、設備数も従来法の第１図に比べ大巾に簡素化された
。Additionally, the number of equipment has been greatly simplified compared to the conventional method shown in Figure 1.
実施例２は発明２に関するものである。Example 2 relates to invention 2.
上記実施例１と同一操業条件で、排ガス温度分布が第２
図におけるｂの場合、本発明を利用しない場合、３５０
℃で５，０ＯＯＮつ偽ｉ。Under the same operating conditions as in Example 1 above, the exhaust gas temperature distribution was
In case b in the figure, if the present invention is not used, 350
5,0 OON false i at ℃.
の排ガスであるが、本発明のバイパスダクトを利用する
と。However, when the bypass duct of the present invention is used.
同じ５，０ＯＯＮ７７＋３／ｍｉｎを抽出しても３６０
℃でで５．ｏｏｏＮｍ、ｚ□ｉｎと、高温の排ガスを抽
出が可能となり、同じ熱量を回収する場合でも、さらに
効率的な熱回収ができる。Even if you extract the same 5,0OON77+3/min, it will be 360
℃5. It becomes possible to extract high-temperature exhaust gas such as oooNm, z□in, and even when recovering the same amount of heat, more efficient heat recovery is possible.
尚この発明において、誘引ファンの能力を変化させる方
法として、入口ダンパを説明したが、代りに入口ベーン
、出口ダンパの調整又は誘引ファンの回転数制御等の方
法によるものでも上記実施例と同様の効果を得ることが
できる。In this invention, the inlet damper has been described as a method for changing the capacity of the induction fan, but methods such as adjusting the inlet vane and outlet damper or controlling the rotation speed of the induction fan may also be used instead of the same method as in the above embodiment. effect can be obtained.
以上のようにこの発明によれば、
（１） 回収風量の調整を誘引ファンの特性変化のみ
で行うため、従来法のウィンドレッグ切替バルブ、抽出
ダクト、抽出ダクト切替バルブが、不要となり、設備的
な制約等により改造、増設が困難な既設備にも容易に設
置可能となる。As described above, according to the present invention, (1) Since the amount of recovered air is adjusted only by changing the characteristics of the induction fan, the wind leg switching valve, extraction duct, and extraction duct switching valve of the conventional method are no longer necessary, and the equipment is reduced. It can also be easily installed in existing equipment that is difficult to modify or expand due to restrictions.
（２）設備が簡単な為に設備費、整備費が安価となる。(2) Equipment costs and maintenance costs are low because the equipment is simple.
（３）風量調整を誘引ファンの変化のみで行う為に必要
な量を容易に連続的に変化させることができる。(3) Since the air volume is adjusted only by changing the induction fan, the required amount can be easily and continuously changed.
（４）バイパスダクトの設置により、排鉱部高温側ガス
の高温部のみを常に抽出可能となる。(4) By installing a bypass duct, it is possible to always extract only the high-temperature part of the gas on the high-temperature side of the ore discharge section.
第１図はドワイトロイド式焼結機とその排鉱側ウィンド
レッグから高温排ガスを抽出する従来装置の図、第２図
は、焼結機の機長方向の排ガス温度分布を示す図、第３
図はこの発明を実施する高温排ガス抽出装置の図、第４
図は、第３図を省略して図示した装置イと、イの装置の
機長方向に対応したこの発明を実施し、誘引ファン能力
を変化させたときの配管系統負圧分布と、流通方向の変
化について示した回目である。
１・・・・・・焼結拶、２・・・・・・点火装置、３・
・・・・・ウィンドボックス、４・・・・・・ウィンド
レッグ、５・・・・・・ウィンドレッグ切替バルブ、６
・・・・・・メインダクト、７・・・・・・抽出ダクト
、８・・・・・・抽出ダクト切替バルブ。
９・・・・・・抽出メインダクト、１０・・・・・・集
塵機％１１・・・・・・誘引ファン％ １２・・・・・
・排鉱部デッドプレート。
１３・・・・・・熱交換器、１４・・・・・・入口ダン
パ、１５・・・・・°点火装置へのダクト、１６・・・
・・・低温排ガスノくイパスダクト。Figure 1 is a diagram of a Dwight Lloyd sintering machine and a conventional device for extracting high-temperature exhaust gas from its wind leg on the discharge side. Figure 2 is a diagram showing the exhaust gas temperature distribution in the longitudinal direction of the sintering machine.
Figure 4 is a diagram of a high-temperature exhaust gas extraction device that implements this invention.
The figure shows the negative pressure distribution in the piping system when the present invention is implemented and the induction fan capacity is varied, and the distribution in the flow direction corresponding to the device A shown in FIG. This is the third time I've talked about changes. 1...Sintering greeting, 2...Ignition device, 3.
...Wind box, 4...Wind leg, 5...Wind leg switching valve, 6
...Main duct, 7...Extraction duct, 8...Extraction duct switching valve. 9...Extraction main duct, 10...Dust collector% 11...Induction fan% 12...
・Ore discharge section dead plate. 13... Heat exchanger, 14... Inlet damper, 15... Duct to °igniter, 16...
... Low-temperature exhaust gas duct.
Claims (1)
クトの排鉱部側に排ガス抽出系を設け、該排ガス抽出系
内圧力を調整して前記メイン排ガスダクト内における風
量分配点（排風方向分岐点）を制御し、高温側ウィンド
レグ部分の排ガスの該抽出系への抽出範囲を調整するこ
とを特徴とする焼結機の排ガス排出処理法。 ２ ドワイトロイド式焼結機において、メイン排ガスダ
クトの排鉱部側に排ガス抽出系を設け、該排ガス抽出系
内圧力を調節して前記メイン排ガスダクト内における風
量分配点（排風方向分岐点）を制御し、高温側ウィンド
レグ部分の排ガスの該抽出系への抽出範囲を調整すると
ともに、前記高温側のウィンドレグの中で焼結操業変動
上及び排鉱部デッドプレートからの漏風により、排ガス
温度が低下するウィンドレグの排ガスを同ウィンドレグ
部分から非抽出域に接続したバイパス管により非抽出域
のメイン排ガスダクトに逃すことを特徴とする焼結機の
排ガス抽出処理法。[Claims] 1. In a Dwight Lloyd type sintering machine, an exhaust gas extraction system is provided on the ore discharge section side of the main exhaust gas duct, and the pressure inside the exhaust gas extraction system is adjusted to determine the air volume distribution point ( 1. A method for treating an exhaust gas discharge from a sintering machine, which comprises controlling the exhaust gas direction (branch point in the exhaust direction) and adjusting the extraction range of the exhaust gas from the high-temperature side wind leg portion into the extraction system. 2. In a Dwight Lloyd type sintering machine, an exhaust gas extraction system is provided on the ore discharge side of the main exhaust gas duct, and the pressure inside the exhaust gas extraction system is adjusted to create an air volume distribution point (exhaust direction branch point) in the main exhaust gas duct. In addition to adjusting the extraction range of exhaust gas from the high-temperature side wind leg to the extraction system, the exhaust gas is A method for extracting exhaust gas from a sintering machine, characterized in that the exhaust gas from the wind leg whose temperature decreases is released into the main exhaust gas duct in the non-extraction area through a bypass pipe connected from the wind leg part to the non-extraction area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12772380A JPS5855428B2 (en) | 1980-09-13 | 1980-09-13 | Sintering machine exhaust gas extraction treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12772380A JPS5855428B2 (en) | 1980-09-13 | 1980-09-13 | Sintering machine exhaust gas extraction treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5752789A JPS5752789A (en) | 1982-03-29 |
| JPS5855428B2 true JPS5855428B2 (en) | 1983-12-09 |
Family
ID=14967107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12772380A Expired JPS5855428B2 (en) | 1980-09-13 | 1980-09-13 | Sintering machine exhaust gas extraction treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5855428B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6230532U (en) * | 1985-08-09 | 1987-02-24 | ||
| JPS63169826U (en) * | 1987-04-28 | 1988-11-04 |
-
1980
- 1980-09-13 JP JP12772380A patent/JPS5855428B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6230532U (en) * | 1985-08-09 | 1987-02-24 | ||
| JPS63169826U (en) * | 1987-04-28 | 1988-11-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5752789A (en) | 1982-03-29 |
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