JPS637085B2 - - Google Patents
Info
- Publication number
- JPS637085B2 JPS637085B2 JP18138383A JP18138383A JPS637085B2 JP S637085 B2 JPS637085 B2 JP S637085B2 JP 18138383 A JP18138383 A JP 18138383A JP 18138383 A JP18138383 A JP 18138383A JP S637085 B2 JPS637085 B2 JP S637085B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- hot metal
- metallurgical furnace
- dust collector
- metal pretreatment
- 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.)
- Expired
Links
- 229910052751 metal Inorganic materials 0.000 claims description 44
- 239000002184 metal Substances 0.000 claims description 44
- 239000000428 dust Substances 0.000 claims description 38
- 238000001816 cooling Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000011449 brick Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 239000012716 precipitator Substances 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 208000001408 Carbon monoxide poisoning Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Landscapes
- Separating Particles In Gases By Inertia (AREA)
Description
【発明の詳細な説明】
本発明は、溶銑前処理時に発生する排ガスの処
理を可能にした冶金炉排ガス処理装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metallurgical furnace exhaust gas treatment device that makes it possible to treat exhaust gas generated during hot metal pretreatment.
最近の製鉄業は、より良質の鋼を作る為に、高
炉で生産された溶銑に含まれているリン、硅素や
硫黄分等の不純物を除却する為の溶銑前処理を行
うようになつてきた。 In recent years, the steel industry has started pre-treating the hot metal produced in blast furnaces to remove impurities such as phosphorus, silicon and sulfur contained in the hot metal, in order to produce better quality steel. .
この溶銑前処理工程において、これに使われる
鍋又は炉からは、高温（約1500℃）で且つ多量の
可燃性ガスが発生する。 In this hot metal pretreatment process, a large amount of flammable gas is generated at high temperature (approximately 1500°C) and from the pot or furnace used.
この可燃性ガスの処理の説明に先立つて冶金炉
排ガス処理装置の概要について説明すると、第１
図において、冶金炉１から発生したCOガスは、
誘引送風機５によつて冷却器２内に誘引されて冷
却され、第１集塵器３及び第２集塵器４によつて
除塵された後、切換弁８によつて切換えられ、
CO濃度の高いガスは有価ガスとしてガスホルダ
６に回収され、CO濃度の低いガスは、煙突７よ
り燃焼の上放散される。 Before explaining the treatment of combustible gas, an overview of the metallurgical furnace exhaust gas treatment equipment will be explained.
In the figure, the CO gas generated from metallurgical furnace 1 is
The air is drawn into the cooler 2 by the induced blower 5 and cooled, and after being removed by the first dust collector 3 and the second dust collector 4, it is switched by the switching valve 8,
Gas with a high CO concentration is recovered as a valuable gas in the gas holder 6, and gas with a low CO concentration is combusted and released from the chimney 7.
冶金炉１から発生するCOガスは、外部に漏洩
すると一酸化炭素中毒になる危険があり、又排ガ
ス処理装置内への外気の侵入により、爆発の危険
があるので、最善の注意が必要である。又冶金炉
１は内張りレンガの焼損が激しいので、定期的な
レンガの張り替えが行われるので、冶金炉排ガス
処理装置は、二系統以上設備されている。 If the CO gas generated from the metallurgical furnace 1 leaks to the outside, there is a risk of carbon monoxide poisoning, and if outside air enters the exhaust gas treatment equipment, there is a risk of explosion, so extreme caution is required. . Further, since the metallurgical furnace 1 has a lining brick that is severely damaged by fire, the bricks must be periodically replaced, and therefore two or more systems of metallurgical furnace exhaust gas treatment equipment are installed.
さて、冶金炉排ガス処理装置は、上述の通り
COガスの漏洩及び装置内への外気の侵入が許さ
れないので、装置そのものの取扱いを慎重に行う
必要がある。 Now, as mentioned above, the metallurgical furnace exhaust gas treatment equipment is
Since leakage of CO gas and intrusion of outside air into the equipment are not allowed, the equipment itself must be handled with care.
このような理由で、従来の溶銑の前処理時に発
生するガスは、第２図に示すように冶金炉排ガス
処理装置とは別に設けた処理装置によつて処理し
ていた。 For this reason, the gas generated during the conventional pretreatment of hot metal has been treated by a treatment device provided separately from the metallurgical furnace exhaust gas treatment device, as shown in FIG.
図において、溶銑前処理用鍋又は炉９から発生
した高温の排ガスを、誘引送風機１２によつて誘
引し、冷却器１０で冷却した後、集塵器１１で除
塵して、煙突１３から放散していた。 In the figure, high-temperature exhaust gas generated from a hot metal pretreatment ladle or furnace 9 is drawn in by an induced draft fan 12, cooled by a cooler 10, removed by a dust collector 11, and then dissipated from a chimney 13. was.
その結果、冶金炉排ガス処理装置と同程度から
〜60％程度の大がかりな処理装置を必要とし、折
角良質の鋼を得ても、結局設備費が嵩むことにな
つて生産コストが高くなるという欠点があつた。 As a result, a large-scale treatment equipment that is about the same size to ~60% larger than the metallurgical furnace exhaust gas treatment equipment is required, and even if good quality steel is obtained, the equipment costs will increase in the end, resulting in higher production costs. It was hot.
本発明は、冶金炉排ガス処理装置の安全性を満
足させた上で溶銑前処理工程で発生する排ガスを
冶金炉排ガス処理装置にて処理できるようにし、
溶銑前処理に必要な設備費を軽減すると共に、可
燃性ガスの回収も可能にした、冶金炉排ガス処理
装置を提供せんとするものである。 The present invention enables the metallurgical furnace exhaust gas treatment device to treat the exhaust gas generated in the hot metal pretreatment process while satisfying the safety of the metallurgical furnace exhaust gas treatment device.
The present invention aims to provide a metallurgical furnace exhaust gas treatment device that reduces equipment costs required for hot metal pretreatment and also makes it possible to recover combustible gas.
本発明の冶金炉排ガス処理装置は、溶銑前処理
工程で発生した排ガスを冷却器で冷却し、この冷
却した排ガスを、逆流防止機能を備えた溶銑前処
理用集塵器を介して、冶金炉排ガス処理装置の第
２集塵器の入口側に接続したことを特徴とするも
のである。 The metallurgical furnace exhaust gas treatment device of the present invention cools the exhaust gas generated in the hot metal pretreatment process with a cooler, and transfers the cooled exhaust gas to the metallurgical furnace through the hot metal pretreatment dust collector equipped with a backflow prevention function. This device is characterized in that it is connected to the inlet side of the second dust collector of the exhaust gas treatment device.
以下本発明の一実施例について詳細に説明す
る。第３図において、１は冶金炉、２は冷却器、
３は一次集塵器、４は二次集塵器、５は誘引送風
機である。一方９は溶銑前処理用鍋又は炉であ
る。１０は溶銑前処理用鍋又は炉９から排出され
た排ガスを冷却する為の冷却器である。１４は逆
流防止機能を備えた溶銑前処理用集塵器であり、
本実施例では水封逆止弁を使用している。 An embodiment of the present invention will be described in detail below. In Fig. 3, 1 is a metallurgical furnace, 2 is a cooler,
3 is a primary dust collector, 4 is a secondary dust collector, and 5 is an induced fan. On the other hand, 9 is a hot metal pretreatment pot or furnace. 10 is a cooler for cooling exhaust gas discharged from the hot metal pretreatment ladle or furnace 9. 14 is a dust collector for hot metal pretreatment with a backflow prevention function,
In this embodiment, a water seal check valve is used.
第４図及び第５図において、冶金炉排ガス処理
装置の一次集塵器３は水封可能になつており、第
４図の場合は、スロートを閉にして水を溜めるよ
うにしたもので、第５図の場合はガス導入口を水
中に投入し、反転式のガスシールとなしたもので
ある。 In Figures 4 and 5, the primary dust collector 3 of the metallurgical furnace exhaust gas treatment equipment is water-sealable, and in the case of Figure 4, the throat is closed to store water. In the case shown in Fig. 5, the gas inlet is placed in water to form a reversible gas seal.
第６図は、複数の冶金炉排ガス処理装置（通常
製鉄では複数の排ガス処理装置を備えている）
Ａ，Ｂ，Ｃに、溶銑前処理装置を接続したもので
ある。本実施例の場合は、１個の溶銑前処理用集
塵器１４を介して接続したものである。図中１４
はダクト１６に設けた切換用弁である。第７図は
冶金炉排ガス処理装置Ａ，Ｂ，Ｃに対し夫々１個
の溶銑前処理用集塵器１４を設け、溶銑前処理装
置を冶金炉排ガス処理装置に接続したものであ
る。 Figure 6 shows multiple metallurgical furnace exhaust gas treatment devices (usually steel manufacturing is equipped with multiple exhaust gas treatment devices).
A, B, and C are connected to a hot metal pretreatment device. In the case of this embodiment, the connection is made through one dust collector 14 for hot metal pretreatment. 14 in the diagram
is a switching valve provided in the duct 16. In FIG. 7, one hot metal pretreatment dust collector 14 is provided for each of the metallurgical furnace exhaust gas treatment devices A, B, and C, and the hot metal pretreatment devices are connected to the metallurgical furnace exhaust gas treatment device.
以上のように構成した本実施例の作用について
説明する。 The operation of this embodiment configured as above will be explained.
冶金炉１（第１図参照）は、内面にレンガが内
張りされており、このレンガは高温の溶銑に接触
するので焼損する。その為に冶金炉排ガス処理装
置を停止し、レンガの張り替えを行うと共に、他
の冶金炉排ガス処理装置によつて操業を続行す
る。 The metallurgical furnace 1 (see FIG. 1) is lined with bricks on the inner surface, and the bricks are burnt out as they come into contact with hot hot metal. For this reason, the metallurgical furnace exhaust gas treatment equipment will be shut down, the bricks will be replaced, and the operation will continue using other metallurgical furnace exhaust gas treatment equipment.
第６図を例に説明すると、冶金炉排ガス処理装
置Ａ，Ｂを稼動し、Ｃを停止して冶金炉１のレン
ガ張り替えを行つているものとする。 Taking FIG. 6 as an example, it is assumed that the metallurgical furnace exhaust gas treatment devices A and B are in operation, and the metallurgical furnace exhaust gas treatment devices A and B are in operation, and the metallurgical furnace 1 is being re-bricked with the device C being stopped.
この製鉄プラントにおいて、冶金炉排ガス処理
装置Ａ，Ｂの一次集塵器３Ａ，３Ｂは、開放され
た状態になつており、冶金炉１から発生する排ガ
スを通常通り処理している（第１図参照）。 In this steelmaking plant, the primary precipitators 3A and 3B of the metallurgical furnace exhaust gas treatment devices A and B are in an open state, and the exhaust gas generated from the metallurgical furnace 1 is treated as usual (see Figure 1). reference).
一方冶金炉排ガス処理装置Ｃの一次集塵器３Ｃ
は、水封されていて、溶銑前処理用鍋又は炉９か
らの排ガスは冷却器１０で冷却され、溶銑前処理
用集塵器１４によつて除塵された後開かれた切換
弁１５を経て冶金炉排ガス処理装置Ｃの二次集塵
器４Ｃに導かれる。 On the other hand, the primary dust collector 3C of the metallurgical furnace exhaust gas treatment equipment C
is sealed with water, and the exhaust gas from the hot metal pretreatment pot or furnace 9 is cooled by a cooler 10, removed by a dust collector 14 for hot metal pretreatment, and then passed through a switching valve 15 that is opened. It is guided to the secondary dust collector 4C of the metallurgical furnace exhaust gas treatment equipment C.
この二次集塵器４Ｃに導かれた排ガスは前記の
如く一次集塵器３Ｃが水封されているので、冶金
炉排ガス処理装置Ｃの冷却器２の下部開口からの
空気の侵入が遮断されているので、爆発の危険が
なく、冷却除塵され、切換弁８（第１図参照）の
切換により、回収又は放散されることになる。 Since the primary dust collector 3C is water-sealed as described above, the exhaust gas led to the secondary dust collector 4C is blocked from entering from the lower opening of the cooler 2 of the metallurgical furnace exhaust gas treatment equipment C. Therefore, there is no risk of explosion, and the dust is cooled and removed, and it can be recovered or dissipated by switching the switching valve 8 (see Fig. 1).
溶銑前処理装置を停止する場合は、溶銑前処理
用集塵器１４に水を注入して水封し、溶銑前処理
用鍋又は炉９を隔絶する。このようにして溶銑前
処理用鍋又は炉９を隔絶することにより、及び一
次集塵器３Ｃを水封することにより、切換弁１５
を水封又はN2シールすれば運転中の冶金炉排ガ
ス処理装置Ａ，Ｂ内への外気の侵入はない。冶金
炉排ガス処理装置がCOガスでなくCO2ガスを処
理する燃焼型排ガス処理装置の時の切換弁１５の
シールは厳重に水又はN2でシールする必要はな
い。 When the hot metal pretreatment device is to be stopped, water is injected into the hot metal pretreatment dust collector 14 to seal it with water, and the hot metal pretreatment pot or furnace 9 is isolated. By isolating the hot metal pretreatment pot or furnace 9 in this way and by water-sealing the primary dust collector 3C, the switching valve 15
If the metallurgical furnace exhaust gas treatment equipment A and B are sealed with water or N2 , there will be no intrusion of outside air into the metallurgical furnace exhaust gas treatment equipment A and B during operation. When the metallurgical furnace exhaust gas treatment device is a combustion type exhaust gas treatment device that processes CO 2 gas instead of CO gas, the switching valve 15 does not need to be tightly sealed with water or N 2 .
溶銑前処理装置の運転を再開する場合は、冶金
炉排ガス処理装置Ｃの一次集塵器３Ｃを水封にし
て、誘引送風機５（第３図参照）を駆動し、その
後溶銑前処理用集塵器１４の水を排出して起動す
る。 When restarting the operation of the hot metal pretreatment equipment, the primary dust collector 3C of the metallurgical furnace exhaust gas treatment equipment C is water-sealed, the induced blower 5 (see Fig. 3) is driven, and then the dust collector for hot metal pretreatment is restarted. Drain the water from the vessel 14 and start up.
第７図に示す実施例の場合は、運転中の冶金炉
排ガス処理装置Ａ，Ｂに接続された溶銑前処理用
集塵器１４は水封され、外気の侵入を防止してい
る。その他の点については、第６図について説明
したのと同じである。 In the case of the embodiment shown in FIG. 7, the hot metal pretreatment dust collector 14 connected to the metallurgical furnace exhaust gas treatment devices A and B in operation is water-sealed to prevent outside air from entering. The other points are the same as those described in connection with FIG.
以上詳述した通り本発明は、溶銑前処理冷却系
を逆流防止機能を有する溶銑前処理用集塵器を介
して、冶金炉排ガス処理装置の二次集塵器の入口
側に接続したので、冶金炉排ガス処理装置の一次
集塵器を密封して外気の侵入を防止しながら溶銑
前処理用鍋又は炉から発生する排ガスを回収又は
放出することができた。 As detailed above, the present invention connects the hot metal pretreatment cooling system to the inlet side of the secondary precipitator of the metallurgical furnace exhaust gas treatment equipment via the hot metal pretreatment dust collector having a backflow prevention function. The primary dust collector of the metallurgical furnace exhaust gas treatment equipment was sealed to prevent outside air from entering, while exhaust gas generated from the hot metal pretreatment ladle or furnace could be collected or released.
又逆流防止機能を備えた溶銑前処理用集塵器を
用いたので、溶銑前処理をしない時でも外気の侵
入を防止して、稼動中の冶金炉排ガス処理装置を
安全操業できた。 In addition, since a hot metal pretreatment dust collector with a backflow prevention function was used, the intrusion of outside air was prevented even when hot metal pretreatment was not performed, and the metallurgical furnace exhaust gas treatment equipment during operation could be operated safely.
更に前記の如く溶銑前処理用鍋又は炉から発生
する排ガスを、冶金炉排ガス処理装置を利用して
処理するようにしたので、大がかりな処理装置を
必要とせず、しかも休止している冶金炉排ガス処
理装置を利用するようにしたので、製鉄プラント
の稼動効率を向上させることができ、生産コスト
の低い良質の鋼を得る事ができる等優れた効果を
有する。 Furthermore, as mentioned above, since the exhaust gas generated from the ladle or furnace for hot metal pretreatment is treated using the metallurgical furnace exhaust gas treatment equipment, there is no need for large-scale treatment equipment, and moreover, the exhaust gas generated from the metallurgical furnace exhaust gas that is not in use can be treated using the metallurgical furnace exhaust gas treatment equipment. Since the processing equipment is used, the operating efficiency of the steel plant can be improved, and high quality steel can be obtained at low production cost, which has excellent effects.
第１図は冶金炉排ガス処理装置の概略図、第２
図は従来の溶銑前処理装置を示す系統図、第３図
乃至第７図は本発明の実施例であり、第３図は要
部を示した系統図、第４図及び５図は一次集塵器
の水封状態を示す図、第６図は１個の溶銑前処理
用集塵器によつて、第７図は個々に溶銑前処理用
集塵器を使つて、複数の冶金炉排ガス処理装置に
溶銑前処理装置を接続したものを示す系統図であ
る。
１……冶金炉、２……冷却器、３……一次集塵
器、４……二次集塵器、９……溶銑前処理用鍋又
は炉、１０……冷却器、１４……逆流防止機能を
備えた溶銑前処理用集塵器。
Figure 1 is a schematic diagram of the metallurgical furnace exhaust gas treatment equipment, Figure 2
The figure is a system diagram showing a conventional hot metal pretreatment equipment, Figures 3 to 7 are examples of the present invention, Figure 3 is a system diagram showing the main parts, and Figures 4 and 5 are primary collections. Figure 6 shows the water-sealed state of the dust container. Figure 6 shows how one hot metal pre-treatment dust collector is used, and Figure 7 shows how multiple metallurgical furnace exhaust gases are collected using individual hot metal pre-treatment dust collectors. It is a system diagram showing what connected a hot metal pretreatment device to a processing device. 1...Metallurgical furnace, 2...Cooler, 3...Primary dust collector, 4...Secondary dust collector, 9...Pot or furnace for hot metal pretreatment, 10...Cooler, 14...Backflow Dust collector for hot metal pretreatment with prevention function.
Claims (1)
た後、第１集塵器及び第２集塵器にて除塵し、切
換ダンパを介して、排ガスを回収するか又は煙突
より放散するようにした冶金炉排ガス処理装置に
おいて、溶銑前処理用鍋又は炉から発生した排ガ
スを冷却器で冷却する溶銑前処理冷却系と、該溶
銑前処理冷却系の排ガス中のダストを除塵すると
共に逆流を防止する機能を備えた溶銑前処理用集
塵器とを備え、該溶銑前処理用集塵器の排ガス出
口側を上記冶金炉排ガス処理装置の二次集塵器入
口側に接続したことを特徴とする冶金炉排ガス処
理装置。1 After the exhaust gas generated from the metallurgical furnace is cooled in a cooler, the dust is removed in the first dust collector and second dust collector, and the exhaust gas is collected via a switching damper or released from the chimney. In the metallurgical furnace exhaust gas treatment equipment, there is a hot metal pretreatment cooling system that cools the exhaust gas generated from the hot metal pretreatment ladle or the furnace with a cooler, and a system that removes dust from the exhaust gas of the hot metal pretreatment cooling system and prevents backflow. A dust collector for hot metal pretreatment having a function is provided, and the exhaust gas outlet side of the hot metal pretreatment dust collector is connected to the inlet side of the secondary dust collector of the metallurgical furnace exhaust gas treatment device. Metallurgical furnace exhaust gas treatment equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18138383A JPS6071021A (en) | 1983-09-29 | 1983-09-29 | Exhaust gas treating apparatus of metallurgical furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18138383A JPS6071021A (en) | 1983-09-29 | 1983-09-29 | Exhaust gas treating apparatus of metallurgical furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6071021A JPS6071021A (en) | 1985-04-22 |
| JPS637085B2 true JPS637085B2 (en) | 1988-02-15 |
Family
ID=16099767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18138383A Granted JPS6071021A (en) | 1983-09-29 | 1983-09-29 | Exhaust gas treating apparatus of metallurgical furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6071021A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100355451B1 (en) * | 1999-12-23 | 2002-10-11 | 주식회사 포스코건설 | Apparatus for improving water quality of degassing system and method for improving water quality of water treatment by using it |
-
1983
- 1983-09-29 JP JP18138383A patent/JPS6071021A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6071021A (en) | 1985-04-22 |
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