JPH0641612B2 - Pressurized converter exhaust gas treatment device and operating method thereof - Google Patents
Pressurized converter exhaust gas treatment device and operating method thereofInfo
- Publication number
- JPH0641612B2 JPH0641612B2 JP27562089A JP27562089A JPH0641612B2 JP H0641612 B2 JPH0641612 B2 JP H0641612B2 JP 27562089 A JP27562089 A JP 27562089A JP 27562089 A JP27562089 A JP 27562089A JP H0641612 B2 JPH0641612 B2 JP H0641612B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- converter
- pressurized
- blowing
- exhaust gas
- 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 - Fee Related
Links
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、加圧式転炉排ガス処理装置及びその運転方法
に関する。Description: TECHNICAL FIELD The present invention relates to a pressurized converter exhaust gas treatment apparatus and an operating method thereof.
加圧式転炉排ガス処理装置として、第４図に示す如く転
炉１の炉口とガス冷却器３の入口との間を密閉する密閉
装置４を設けると共に空気押込装置30を設けて、転炉操
業時転炉１の炉口とガス冷却器３の入口との間を密閉装
置４により閉塞し、転炉１内への酸素吹込装置２からの
酸素吹込みによって発生するガスで系内を加圧すること
によりガス輸送して、ガスの冷却、集塵、送出を行うよ
うにしたものがある（特公昭56-54364号公報参照）。As a pressurization type converter exhaust gas processing device, as shown in FIG. 4, a sealing device 4 for sealing the space between the furnace opening of the converter 1 and the inlet of the gas cooler 3 is provided, and an air pushing device 30 is provided. During operation, the space between the furnace opening of the converter 1 and the inlet of the gas cooler 3 is closed by the sealing device 4, and the system is heated by the gas generated by the oxygen blowing from the oxygen blowing device 2 into the converter 1. There is one in which gas is transported by pressure to perform cooling, dust collection, and delivery of the gas (see Japanese Patent Publication No. 56-54364).
ところで、上記の加圧式転炉排ガス処理装置では、操業
開始時に系内に滞溜しているＣＯ濃度の低いガスを、ま
た操業終了時及び緊急停止時に系内に残留するＣＯ濃度
の高い爆発性且つ有害性のあるガスをパージする為に、
密閉装置４により密閉した転炉１の炉口付近へ、空気押
込装置30の空気噴入ノズル31により空気を押込んでいる
が、系内のガス圧力に打勝って系内に空気を押込む為に
は昇圧能力の大きな送風機32が必要である。またこの送
風機32を転炉操業中に停止したのでは、操業中に突然発
生する緊急停止時への対応が遅れ、安全性の確保が困難
となる為、この送風機32は常時連続運転をする必要があ
る。By the way, in the above-mentioned pressurized converter exhaust gas treatment device, the gas with a low CO concentration that has accumulated in the system at the start of operation and the explosive property with a high CO concentration remaining in the system at the end of operation and an emergency shutdown are used. And in order to purge harmful gases,
The air is pushed by the air injection nozzle 31 of the air pushing device 30 to the vicinity of the furnace opening of the converter 1 which is closed by the closing device 4, but the air pressure is pushed into the system by overcoming the gas pressure in the system. Requires a blower 32 with a large boosting capacity. Further, if the blower 32 is stopped during the converter operation, it is difficult to ensure safety because it is difficult to respond to an emergency stop that occurs suddenly during the operation, so it is necessary to continuously operate the blower 32. There is.
従って、上記加圧式転炉排ガス処理装置では、通常の転
炉排ガス処理装置に設けられている誘引送風機と同程度
の押込送風機32が必要であり、且つ操業中は連続して運
転する必要があることから、加圧操業を行うメリットが
生じないものである。Therefore, in the pressurized converter exhaust gas treatment apparatus, a forced blower 32 of the same degree as the induction blower provided in the normal converter exhaust gas treatment apparatus is required, and it is necessary to continuously operate during operation. Therefore, the merit of performing the pressure operation does not occur.
そこで本発明は、押込送風機が不要で、必要な時にのみ
即ち操業開始時、操業終了時及び緊急停止時に系内に空
気を吹込むことができ、これにより系内のＣＯガスを燃
焼させて生じた不活性ガスにより該系内をパージするこ
とのできる加圧式転炉排ガス処理装置及びその運転方法
を提供しようとするものである。Therefore, the present invention does not require a forced air blower, and air can be blown into the system only when necessary, that is, at the start of operation, at the end of operation, and at the time of an emergency stop, whereby CO gas in the system is burned to generate air. Another object of the present invention is to provide a pressurized converter exhaust gas treatment apparatus capable of purging the inside of the system with an inert gas and an operating method thereof.
上記課題を解決する為の本発明の加圧式転炉排ガス処理
装置は、転炉操業時転炉炉口とガス冷却器の入口との間
を密閉装置により密閉し、転炉内へ酸素吹込装置からの
酸素吹込によって発生するガスで系内を加圧することに
よりガス輸送して、ガスの冷却、集塵、送出を行うよう
にした加圧式転炉排ガス処理装置に於いて、ガス冷却器
入口部に転炉操業開始時と操業終了時及び緊急停止時に
密閉された転炉炉口近辺から系内へ空気を吹込む為のノ
ズルと加圧空気貯槽を設けたことを特徴とするものであ
る。The pressurized converter exhaust gas treatment device of the present invention for solving the above-mentioned problems seals a converter between a converter furnace opening and a gas cooler inlet at the time of converter operation, and an oxygen blowing device into the converter. A gas cooler inlet part in a pressurized converter exhaust gas treatment device in which gas is transported by pressurizing the inside of the system with gas generated by blowing oxygen from the gas, and cooling, dust collection and delivery of the gas are performed. In addition, a nozzle and a pressurized air storage tank are provided for blowing air into the system from the vicinity of the converter furnace opening, which is closed at the start and end of the converter operation and at the time of emergency stop.
また本発明の転炉排ガス処理装置の運転方法は、転炉操
業時転炉炉口とガス冷却器の入口との間を密閉装置によ
り密閉し、転炉内へ酸素吹込装置からの酸素吹込によっ
て発生するガスで系内を加圧することによりガス輸送し
て、ガスの冷却、集塵、送出を行うようにした加圧式転
炉排ガス処理装置に於いて、転炉の操業開始時と操業終
了時及び緊急停止時に密閉された転炉炉口近辺から系内
へ予め定められた量の空気を定められた吹込み時間と吹
込みパターンで吹込み、系内のＣＯガスを燃焼させて生
じた不活性ガスにより該系内をパージすることを特徴と
するものである。Further, the operating method of the converter exhaust gas treatment device of the present invention, by sealing the gap between the converter furnace inlet and the inlet of the gas cooler during converter operation, by oxygen injection from the oxygen blowing device into the converter. At the start of converter operation and at the end of operation in a pressurized converter exhaust gas treatment device in which gas is transported by pressurizing the system with generated gas to cool, collect, and deliver the gas. In addition, at the time of an emergency stop, a predetermined amount of air is blown into the system from the vicinity of the converter furnace, which is closed at the time of emergency stop, with a predetermined blowing time and blowing pattern to burn the CO gas in the system. The inside of the system is purged with an active gas.
上記の如く本発明の加圧式転炉排ガス処理装置は、ガス
冷却器入口部に密閉された転炉炉口近辺から系内へ空気
を吹込む為のノズルと加圧空気貯槽を設けてあるので、
その運転に於いて操業開始時と操業終了時及び緊急停止
時に、操業時に吹込まれる酸素量によって求められる発
生ガス量とガス組成の範囲から予め定められた量の空気
を、定められた吹込み時間と吹込みパターンにより系内
に吹込み、系内のＣＯガスを燃焼させて生じさせた不活
性ガスにより該系内をパージすることにより、安全性を
確保できる。また不必要に発生ガスを燃焼させることが
無いので、ガス回収効率が向上する。さらに転炉からの
発生ガス量が少なく、ガス圧力が低い状態でも圧力の高
い空気を吹込むことにより、集塵器に必要な圧力損失を
確保することができ、除塵効率の低下をもたらすことが
無い。As described above, the pressurized converter exhaust gas treatment apparatus of the present invention is provided with the nozzle and the pressurized air storage tank for injecting air into the system from the vicinity of the converter furnace opening, which is closed at the inlet of the gas cooler. ,
In the operation, at the start of operation, at the end of operation, and at the time of emergency stop, a predetermined amount of air is blown in a predetermined amount from the range of the generated gas amount and gas composition required by the amount of oxygen blown at the time of operation Safety can be ensured by blowing into the system according to the time and blowing pattern and purging the inside of the system with an inert gas generated by burning the CO gas in the system. Moreover, since the generated gas is not burned unnecessarily, the gas recovery efficiency is improved. Furthermore, by blowing high-pressure air even when the amount of gas generated from the converter is small and the gas pressure is low, it is possible to secure the pressure loss necessary for the dust collector, which can lead to a reduction in dust removal efficiency. There is no.
本発明の加圧式転炉排ガス処理装置の実施例を第１図に
よって説明すると、１は転炉、２は酸素吹込装置、３は
ガス冷却器、１４は転炉１の炉口とガス冷却器３の入口
との間を完全に密閉する密閉装置で駆動装置５により動
作するようになっている。ガス冷却器３の下流に圧抜装
置６が設けられて先端は図示されない転炉棟換気系集塵
器等に接続されている。プレコレクター７からのガス流
路８の途中には接触伝熱部９が設けられてその先が高温
乾式集塵器10（湿式集塵器の場合もある）に連通されて
いる。高温乾式集塵器10からのガス送出路11の上流には
接触伝熱部12が設けられ、途中に炉内圧力制御ダンパー
13、排ガス流量計14が設けられている。ガス送出路11は
ガス放散筒15とガス回収路16とに接続され、ガス放散筒
15との接続部の上流にガス放散筒15の上部へのバイパス
通路17が設けられている。ガス放散筒15の入口部には放
散系ガス遮断弁18が設けられ、中高部には放散系ガス圧
力制御ダンパー19が設けられている。ガス回収路16及び
バイパス通路17の入口部には回収系ガス遮断弁20、バイ
パス弁21が設けられている。ガス回収路16はガスホルダ
ー22に接続されている。前記ガス冷却器３の入口部に
は、転炉操業開始時と操業終了時及び緊急停止時に密閉
された転炉炉口近辺から系内へ空気を吹込む為のノズル
23と加圧空気貯槽24が設けられている。24aは加圧空気
貯槽24のバルブである。25はガス冷却器３の下部に設け
たＮ2吹込みノズルである。An embodiment of the pressurized converter exhaust gas treatment apparatus of the present invention will be described with reference to FIG. 1. Reference numeral 1 is a converter, 2 is an oxygen blowing device, 3 is a gas cooler, and 14 is a furnace port and a gas cooler of the converter 1. It is a sealing device that completely seals the space between the inlet and the inlet 3 and is operated by the driving device 5. A depressurizing device 6 is provided downstream of the gas cooler 3, and its tip end is connected to a dust collector or the like of a converter ridge ventilation system (not shown). A contact heat transfer section 9 is provided in the middle of the gas flow path 8 from the precollector 7, and the tip of the contact heat transfer section 9 communicates with a high temperature dry type dust collector 10 (which may be a wet type dust collector). A contact heat transfer section 12 is provided upstream of the gas delivery path 11 from the high temperature dry type dust collector 10, and a furnace pressure control damper is provided on the way.
An exhaust gas flow meter 14 is provided. The gas delivery channel 11 is connected to the gas diffusion tube 15 and the gas recovery channel 16, and is connected to the gas diffusion tube 15.
A bypass passage 17 to the upper portion of the gas diffusion cylinder 15 is provided upstream of the connection portion with 15. At the inlet of the gas diffusion tube 15, a diffusion gas cutoff valve 18 is provided, and at the middle and high portion, a diffusion gas pressure control damper 19 is provided. A recovery system gas cutoff valve 20 and a bypass valve 21 are provided at the inlets of the gas recovery passage 16 and the bypass passage 17. The gas recovery passage 16 is connected to the gas holder 22. At the inlet of the gas cooler 3, there is a nozzle for blowing air into the system from the vicinity of the converter furnace opening, which is closed at the start and end of the converter operation and at the time of emergency stop.
23 and a pressurized air storage tank 24 are provided. 24 a is a valve of the pressurized air storage tank 24. Reference numeral 25 is an N 2 blowing nozzle provided below the gas cooler 3.
このように構成された実施例の加圧式転炉排ガス処理装
置はその運転に於いて、先ず転炉１の炉口とガス冷却器
３の入口との間を駆動装置５により密閉装置４を動作し
て完全に密閉すると同時に加圧空気貯槽24のバルブ24a
を開けてノズル23にて転炉１の炉口近辺から系内へ、操
業時に吹込まれる酸素量によって求められる発生ガス量
とガス組成の範囲から予め定められた量の空気を、定め
られた吹込み時間と吹込みパターンにて吹込む。そして
酸素吹込装置２から転炉１内へ酸素を吹込んで吹錬を開
始する。この吹錬開始によって生じたＣＯガスは炉口近
辺から系内に吹込まれた空気により燃焼せしめられてＣ
Ｏ2（不活性）ガスとなり、吹込まれた空気が消費され
て所要量のＣＯ2（不活性）ガスが確保されたことが確
認されると、バルブ24aが閉じられ、ノズル23からの空
気の吹込みが停止する。そして炉内圧力制御ダンパー1
3、放散系ガス圧力制御ダンパー19が全開又は規定開度
からそれぞれの設定圧力による自動制御となり、酸素の
吹込みによって発生するガスで次第に系内が加圧されて
ガス輸送され、ガス冷却器３で冷却され、プレコレクタ
ー７で粒径の大きいダストが除去され、ガス流路８を通
って途中接触伝熱部９で冷却された後高温乾式集塵器10
に入って粒径の小さいダストが除去され、ガス送出路11
を通って接触伝熱部12で冷却された後、炉内圧力制御ダ
ンパー13を経由し、ガス放散筒15を通り、頂部で燃焼の
上大気中に放散される。ガス回収指令が発せられると、
放散系ガス圧力制御ダンパー19が規定開度になされ、回
収系ガス遮断弁20が開かれ、放散系ガス遮断弁18が閉じ
られてガスボルダー22にＣＯガスが回収される。ＣＯガ
スの回収が一定時間行われると、ガス放散指令が発せら
れ、放散系ガス遮断弁18が開かれ、回収系ガス遮断弁20
が閉じられて、ＣＯガスがガス放散筒15を通って頂部で
燃焼の上大気中に放散される。放散系ガス遮断弁18が完
全に開かれ、回収系ガス遮断弁20が完全に閉じられるま
では、放散系ガス圧力制御ダンパー19はガスホルダー22
の圧力＋αで制御され、それ以後全開又は規定開度に開
かれる。そして転炉１の操業が終期に入ったならば、加
圧空気貯槽24のバルブ24aを開けてノズル23にて転炉１
の炉口近辺から系内へ、操業時の吹込まれる酸素量によ
って求められる発生ガス量とガス組成の範囲から予め定
められた量の空気を、定められた吹込み時間と吹込みパ
ターンにて吹込み、転炉１から発生するＣＯガスを燃焼
してＣＯ2（不活性）ガスを発生させながら酸素の吹込
みを停止し、吹錬を停止する。そしてその後加圧空気貯
槽24のバルブ24aを閉じて、ノズル23からの空気の吹込
みを停止する。こうして転炉の１操業が終った後は、圧
抜装置６が開かれ、系内の圧力が解放された後閉じられ
る。そして密閉装置４が駆動装置５により動作して転炉
１の炉口とガス冷却器３の入口との間が開かれる。In the operation of the pressurized converter exhaust gas treatment apparatus of the embodiment thus configured, first, the sealing device 4 is operated by the drive device 5 between the furnace opening of the converter 1 and the inlet of the gas cooler 3. Valve 24a of the pressurized air storage tank 24 at the same time
After opening the nozzle 23, a predetermined amount of air was determined from the range of the generated gas amount and gas composition determined by the amount of oxygen blown into the system from the vicinity of the furnace opening of the converter 1 into the system. Blow according to the blowing time and blowing pattern. Then, oxygen is blown into the converter 1 from the oxygen blowing device 2 to start blowing. The CO gas generated by the start of the blowing is burned by the air blown into the system from the vicinity of the furnace opening and becomes C
When it is confirmed that it becomes O 2 (inert) gas, the blown air is consumed and a required amount of CO 2 (inert) gas is secured, the valve 24a is closed and the air from the nozzle 23 is removed. Blowing stops. And the reactor pressure control damper 1
3, the diffusion system gas pressure control damper 19 is fully opened or automatically controlled by the set pressure from the specified opening degree, and the system is gradually pressurized by the gas generated by the blowing of oxygen to be transported and the gas cooler 3 The high-temperature dry dust collector 10 is cooled by the pre-collector 7, the dust with a large particle size is removed by the pre-collector 7, and is cooled by the midway contact heat transfer section 9 through the gas passage 8.
The small particle size dust is removed to enter the gas delivery path 11
After being cooled by the contact heat transfer section 12, it passes through the in-furnace pressure control damper 13, the gas diffusion tube 15, and is burned at the top to be diffused into the atmosphere. When a gas recovery order is issued,
The desorption system gas pressure control damper 19 is opened to a specified opening, the recovery system gas cutoff valve 20 is opened, the desorption system gas cutoff valve 18 is closed, and CO gas is collected in the gas boulder 22. When the CO gas is collected for a certain period of time, a gas emission command is issued, the emission system gas cutoff valve 18 is opened, and the recovery system gas cutoff valve 20 is opened.
Is closed and CO gas is burnt at the top through the gas diffusion tube 15 and is diffused into the atmosphere. Until the desorption system gas cutoff valve 18 is completely opened and the recovery system gas cutoff valve 20 is completely closed, the desorption system gas pressure control damper 19 remains in the gas holder 22.
The pressure is controlled by the pressure + α, and thereafter it is fully opened or opened to a specified opening. When the operation of the converter 1 enters the final stage, the valve 24a of the pressurized air storage tank 24 is opened and the converter 23 is operated by the nozzle 23.
From the vicinity of the furnace port to the inside of the system, a predetermined amount of air is generated from the range of the generated gas amount and gas composition determined by the amount of oxygen blown in during operation, with a specified blowing time and blowing pattern. Blowing and burning the CO gas generated from the converter 1 to generate CO 2 (inert) gas, the blowing of oxygen is stopped and the blowing is stopped. Then, after that, the valve 24a of the pressurized air storage tank 24 is closed and the blowing of air from the nozzle 23 is stopped. After one operation of the converter is completed in this way, the depressurizing device 6 is opened, and the pressure in the system is released and then closed. Then, the sealing device 4 is operated by the driving device 5 to open the space between the furnace port of the converter 1 and the gas cooler 3.
以上は本発明の加圧式転炉排ガス処理装置の通常運転で
あり、これのタイムチャートを第２図に示す。The above is the normal operation of the pressurized converter exhaust gas treatment apparatus of the present invention, and the time chart thereof is shown in FIG.
然して、加圧式転炉排ガス処理装置の通常運転に於い
て、吹錬により転炉１から発生するＣＯガスをガスホル
ダー22に回収中、非常停止、停電等の信号が入ると、直
ちに冷却器３の下部に設けたＮ2吹込みノズル25から系
内にパージ用Ｎ2が吹込まれると同時に加圧空気貯槽24
のバルブ24aが開かれてノズル23にて転炉１の炉口近辺
から系内へ、操業時に吹込まれる酸素量によって求めら
れる発生ガス量とガス組成の範囲から予め定められた量
の空気を、定められた吹込み時間と吹込みパターンにて
吹込まれ、転炉１から発生するＣＯガスを燃焼してＣＯ
2（不活性）ガスを発生させ、ＣＯ濃度が所定の値まで
低くなったならばパージ用Ｎ2の吹込みを停止し、その
後一定時間（Ｔ）経過したならば加圧空気貯槽24のバル
ブ24aを閉じてノズル23からの空気の吹込みを停止す
る。また非常停止、停電等の信号は入ると直ちに放散系
ガス遮断弁18は開かれ、回収系ガス遮断弁20は閉じられ
て、ＣＯガスがガス放散筒15を通って頂部で燃焼の上大
気中に放散される。放散系ガス遮断弁18が完全に開か
れ、回収系ガス遮断弁20が完全に閉じられるまでは、放
散系ガス圧力制御ダンパー19はガスホルダー22の圧力＋
αで制御され、それ以後全開又は規定開度に開かれる。However, in the normal operation of the pressurized converter exhaust gas treatment device, when CO gas generated from the converter 1 by blowing is being collected in the gas holder 22 and a signal such as an emergency stop or a power failure is input, the cooler 3 is immediately fed. At the same time as purging N 2 is blown into the system from a N 2 blowing nozzle 25 provided in the lower part of the pressurizing air storage tank 24
The valve 24a is opened and the nozzle 23 supplies a predetermined amount of air into the system from the vicinity of the furnace opening of the converter 1 from the range of generated gas amount and gas composition determined by the amount of oxygen blown during operation. , The CO gas generated from the converter 1 is burned by the blow-in with a predetermined blowing time and blowing pattern.
2 (Inert) gas is generated, and when the CO concentration is lowered to a predetermined value, the blowing of N 2 for purging is stopped, and after a certain time (T) has passed, the valve of the pressurized air storage tank 24. 24a is closed to stop blowing air from the nozzle 23. Immediately after a signal such as an emergency stop or a power failure is input, the desorption system gas cutoff valve 18 is opened, the recovery system gas cutoff valve 20 is closed, and CO gas passes through the gas diffusion tube 15 and is burned at the top into the atmosphere. Be dissipated in. Until the desorption system gas cutoff valve 18 is completely opened and the recovery system gas cutoff valve 20 is completely closed, the desorption system gas pressure control damper 19 is equal to the pressure of the gas holder 22 +
It is controlled by α, and thereafter it is fully opened or opened to a specified opening.
こうして転炉排ガス処理装置の緊急停止が行われた後一
定時間経過すると、運転制御のシーケンス復帰がなさ
れ、その後圧抜装置６が開かれ、系内の圧力が解放され
た後閉じられる。そして密閉装置４が駆動装置５により
動作して転炉１の炉口とガス冷却器３の入口との間が開
かれる。When a certain period of time elapses after the emergency stop of the converter exhaust gas treatment device, the sequence of operation control is restored, after which the depressurization device 6 is opened, and the pressure in the system is released and then closed. Then, the sealing device 4 is operated by the driving device 5 to open the space between the furnace port of the converter 1 and the gas cooler 3.
以上は本発明の加圧式転炉排ガス処理装置の緊急停止運
転であり、これのタイムチャートを第３図に示す。The above is the emergency stop operation of the pressurized converter exhaust gas processing apparatus of the present invention, and the time chart thereof is shown in FIG.
以上の説明で判るように本発明の加圧式転炉排ガス処理
装置は、ガス冷却器入口部に密閉された転炉炉口近辺か
ら系内へ空気を吹込む為のノズルと加圧空気貯槽を設け
てあるので、従来のように常時連続運転をする必要のあ
る押込送風機は不要で、操業開始時、操業終了時及び緊
急停止時の必要な時にのみ系内に空気を吹込むことがで
き、従って、これまで押込送風機の常時連続運転に消費
された厖大な電力を節約でき、省エネルギー化に貢献す
るところ大なるものがある。しかも押込送風機の保守、
整備が無くなり、装置全体のメンテナンス性が向上す
る。As can be seen from the above description, the pressurized converter exhaust gas treatment apparatus of the present invention is provided with a nozzle and a pressurized air storage tank for blowing air into the system from the vicinity of the converter furnace opening, which is closed at the inlet of the gas cooler. Since it is provided, there is no need for a forced air blower that requires continuous operation as in the past, and air can be blown into the system only when necessary at the start of operation, at the end of operation, and at the time of emergency stop, Therefore, the enormous amount of electric power that has been consumed in the continuous continuous operation of the forced draft blower can be saved, which contributes greatly to energy saving. Moreover, maintenance of the forced blower,
Maintenance is eliminated and the maintainability of the entire device is improved.
また本発明の加圧式転炉排ガス処理装置の運転方法は、
操業開始時、操業終了時及び緊急停止時に、操業時に吹
込まれる酸素量によって求められる発生ガス量とガス組
成の範囲から予め定められた量の空気を、定められた吹
込み時間と吹込みパターンにより系内に吹込み、系内の
ＣＯガスを燃焼させて生じさせた不活性ガスにより系内
をパージするのであるから、容易に安全性を確保でき
る。また不必要に発生ガスを燃焼させることが無いの
で、ガス回収効率が向上する。さらに転炉からの発生ガ
ス量が少なく、ガス圧力が低い状態でも圧力の高い空気
を吹込むことにより、集塵器に必要な圧力損失を確保す
ることができ、除塵効率の低下をもたらすことが無い。Further, the operating method of the pressurized converter exhaust gas treatment device of the present invention,
At the start of operation, at the end of operation, and at the time of emergency stop, a predetermined amount of air is generated from the range of the generated gas amount and gas composition determined by the amount of oxygen blown at the time of operation, and the predetermined blowing time and blowing pattern. By this, the system is blown into the system and the system is purged by the inert gas generated by burning the CO gas in the system, so that the safety can be easily ensured. Moreover, since the generated gas is not burned unnecessarily, the gas recovery efficiency is improved. Furthermore, by blowing high-pressure air even when the amount of gas generated from the converter is small and the gas pressure is low, it is possible to secure the pressure loss necessary for the dust collector, which can lead to a reduction in dust removal efficiency. There is no.
第１図は本発明の加圧式転炉排ガス処理装置の系統図、
第２図は本発明の加圧式転炉排ガス処理装置の通常運転
のタイムチャートを示す図、第３図は本発明の加圧式転
炉排ガス処理装置の緊急停止運転のタイムチャートを示
す図、第４図は従来の加圧式転炉排ガス処理装置の主要
部を示す系統図である。 １…転炉、２…酸素吹込装置 ３…ガス冷却器、４…密閉装置 ５…駆動装置、６…圧抜装置 ７…プレコレクター、８…ガス流路 ９，12…接触伝熱部、10…高温乾式集塵器 11…ガス送出路 13…炉内圧力制御ダンパー 14…排ガス流量計、15…ガス放散筒 16…ガス回収路、17…バイパス通路 18…放散系ガス遮断弁 19…放散系ガス圧力制御ダンパー 20…回収系ガス遮断弁、21…バイパス弁 22…ガスホルダー、23…ノズル 24…加圧空気貯槽 25…Ｎ2吹込みノズルFIG. 1 is a system diagram of a pressurized converter exhaust gas treatment apparatus of the present invention,
FIG. 2 is a diagram showing a time chart of normal operation of the pressurized converter exhaust gas treatment device of the present invention, and FIG. 3 is a diagram showing a time chart of emergency stop operation of the pressurized converter exhaust gas treatment device of the present invention. FIG. 4 is a system diagram showing a main part of a conventional pressurized converter exhaust gas treatment apparatus. DESCRIPTION OF SYMBOLS 1 ... Converter, 2 ... Oxygen blowing device 3, ... Gas cooler, 4 ... Sealing device 5 ... Driving device, 6 ... Depressurizing device 7 ... Precollector, 8 ... Gas flow path 9, 12 ... Contact heat transfer part, 10 … High-temperature dry dust collector 11… Gas delivery path 13… In-furnace pressure control damper 14… Exhaust gas flow meter, 15… Gas diffusion tube 16… Gas recovery path, 17… Bypass path 18… Diffusion system Gas cutoff valve 19… Diffusion system Gas pressure control damper 20 ... Recovery system gas shutoff valve, 21 ... Bypass valve 22 ... Gas holder, 23 ... Nozzle 24 ... Pressurized air storage tank 25 ... N 2 blowing nozzle
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大木 幹夫 福岡県北九州市八幡東区枝光１丁目１番１ 号 新日本製鐵株式会社八幡製鐵所内 (72)発明者 伊知地 勝弘 福岡県北九州市戸畑区大字中原46番地の59 日鐵プラント設計株式会社内 (72)発明者 西川 真純 東京都江東区南砂２丁目４番25号 川崎重 工業株式会社東京設計事務所内 (72)発明者 藤倉 信幸 東京都江東区南砂２丁目４番25号 川崎重 工業株式会社東京設計事務所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Mikio Oki Inventor Mikio Oki 1-1-1, Edamitsu, Hachimanto-ku, Kitakyushu City, Fukuoka Prefecture (72) Inventor, Katsuhiro Ichiji, Kitakyushu City, Fukuoka Prefecture 59 Nittetsu Plant Design Co., Ltd., 46 Nakahara, Tobata-ku (72) Inventor Masazumi Nishikawa 2-4-25 Minamisuna, Koto-ku, Tokyo Kawasaki Heavy Industries, Ltd. Tokyo Design Office (72) Inventor Nobuyuki Fujikura Tokyo 2-4-25 Minamisuna, Koto-ku, Tokyo Kawasaki Heavy Industries Ltd. Tokyo Design Office
Claims (2)
の間を密閉装置により密閉し、転炉内へ酸素吹込装置か
らの酸素吹込によって発生するガスで系内を加圧するこ
とによりガス輸送して、ガスの冷却、集塵、送出を行う
ようにした加圧式転炉排ガス処理装置に於いて、ガス冷
却器入口部に転炉操業開始時と操業終了時及び緊急停止
時に密閉された転炉炉口近辺から系内へ空気を吹込む為
のノズルと加圧空気貯槽を設けたことを特徴とする加圧
式転炉排ガス処理装置。1. When a converter is in operation, a space between the mouth of the converter and the inlet of the gas cooler is sealed by a sealing device, and the inside of the system is pressurized with a gas generated by oxygen injection from an oxygen injection device. In a pressurized converter exhaust gas treatment device that transports gas, cools, collects, and delivers the gas, the gas cooler inlet part is used at the start of converter operation, at the end of operation, and at emergency stop. A pressurized converter exhaust gas treatment apparatus comprising a nozzle for blowing air into the system from the vicinity of a closed converter furnace opening and a pressurized air storage tank.
の間を密閉装置により密閉し、転炉内へ酸素吹込装置か
らの酸素吹込によって発生するガスで系内を加圧するこ
とによりガス輸送して、ガスの冷却、集塵、送出を行う
ようにした加圧式転炉排ガス処理装置に於いて、転炉の
操業開始時と操業終了時及び緊急停止時に密閉された転
炉炉口近辺から系内へ予め定められた量の空気を定めら
れた吹込み時間と吹込みパターンで吹込み、系内のＣＯ
ガスを燃焼させて生じた不活性ガスにより該系内をパー
ジすることを特徴とする加圧式転炉排ガス処理装置の運
転方法。2. A converter for sealing the space between the converter furnace inlet and the inlet of the gas cooler during converter operation, and pressurizing the inside of the system with gas generated by oxygen injection from the oxygen injection device. In a pressurized converter exhaust gas treatment device that transports gas to cool, collect, and deliver the gas, the converter is sealed at the start and end of operation of the converter and at the time of emergency stop. A predetermined amount of air is blown into the system from the vicinity of the furnace opening at a predetermined blowing time and blowing pattern, and CO in the system is blown.
A method for operating a pressurized converter exhaust gas treatment apparatus, which comprises purging the inside of the system with an inert gas generated by burning gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27562089A JPH0641612B2 (en) | 1989-10-23 | 1989-10-23 | Pressurized converter exhaust gas treatment device and operating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27562089A JPH0641612B2 (en) | 1989-10-23 | 1989-10-23 | Pressurized converter exhaust gas treatment device and operating method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03138312A JPH03138312A (en) | 1991-06-12 |
| JPH0641612B2 true JPH0641612B2 (en) | 1994-06-01 |
Family
ID=17557990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27562089A Expired - Fee Related JPH0641612B2 (en) | 1989-10-23 | 1989-10-23 | Pressurized converter exhaust gas treatment device and operating method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0641612B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2721329C (en) | 2008-05-16 | 2012-04-10 | Jfe Steel Corporation | Method for reforming exhaust gas generated from metallurgical furnace, method for cooling exhaust gas and apparatus therefor |
| JP5470920B2 (en) * | 2009-03-05 | 2014-04-16 | Ｊｆｅスチール株式会社 | Metallurgical furnace exhaust gas reforming equipment |
| RU2528993C2 (en) * | 2010-02-26 | 2014-09-20 | Арселормитталь Инвестигасион И Десаррольо, С.Л. | Device and method for offgas processing |
| US8377175B2 (en) | 2010-02-26 | 2013-02-19 | Arcelormittal Investigacion Y Desarrollo, S.L. | Apparatus and method for treating exhaust gas |
-
1989
- 1989-10-23 JP JP27562089A patent/JPH0641612B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03138312A (en) | 1991-06-12 |
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