JPH0244602B2 - - Google Patents
Info
- Publication number
- JPH0244602B2 JPH0244602B2 JP60063465A JP6346585A JPH0244602B2 JP H0244602 B2 JPH0244602 B2 JP H0244602B2 JP 60063465 A JP60063465 A JP 60063465A JP 6346585 A JP6346585 A JP 6346585A JP H0244602 B2 JPH0244602 B2 JP H0244602B2
- Authority
- JP
- Japan
- Prior art keywords
- dust collector
- dust
- blower
- finishing rolling
- fume 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 - Lifetime
Links
- 239000000428 dust Substances 0.000 claims description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 239000003517 fume Substances 0.000 claims description 27
- 238000005096 rolling process Methods 0.000 claims description 27
- 239000007789 gas Substances 0.000 claims description 25
- 239000000779 smoke Substances 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000002245 particle Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B9/00—Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Separation Of Particles Using Liquids (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は鋼塊等の赤熱金属材である被圧延材
の仕上圧延操業に伴い発生する水蒸気を含んだ酸
化鉄等のフユームガスを捕集吸煙して集塵処理す
る仕上圧延設備用集塵装置に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is a method for collecting and absorbing fume gas such as iron oxide containing water vapor generated during finish rolling operations of red-hot metal materials such as steel ingots. The present invention relates to a dust collector for finishing rolling equipment that collects dust.
従来、この種の仕上圧延設備用集塵装置は、仕
上圧延操業に伴い発生する水蒸気を含んだ酸化鉄
等のフユームガスをベンチユリースクラバーと称
する洗浄式ダストコレクタで集塵処理していた。
この洗浄式ダストコレクタは、給水部を特殊設計
としたベンチユリースクラバーで、スロート部の
水噴射方式に独特な反射板を用い、水滴による断
面包絡を完全にして微粒ダストを高効率で捕集で
きるものである。その集塵効率は粒径0.5μ以上で
99パーセント以上であり、その高い捕集能力を買
われて仕上圧延設備以外にも転炉や平炉・電気炉
等のフユームガス集塵用に多く使用されている。
しかしながらそのベンチユリースクラバーでは圧
力損失が1100〜1500mmAqと非常に高く、この高
圧損によるブロワの消費電力が約２倍の運転経費
がかかり不経済であることからより以上の改良が
要望されていた。
Conventionally, this type of dust collector for finishing rolling equipment collects fume gas such as iron oxide containing water vapor generated during finishing rolling operations using a cleaning type dust collector called a ventilate scrubber.
This cleaning type dust collector is a ventilate scrubber with a specially designed water supply section, and uses a unique reflective plate in the water injection method at the throat section to completely envelop the cross section with water droplets and collect fine dust particles with high efficiency. It is something. Its dust collection efficiency is greater than 0.5μ in particle size.
99% or more, and is widely used for fume gas dust collection in converters, open hearths, electric furnaces, etc. in addition to finishing rolling equipment due to its high collection ability.
However, the pressure loss of the ventilure scrubber is extremely high at 1100 to 1500 mmAq, and the power consumption of the blower due to this high pressure loss is approximately twice as high, making it uneconomical, and further improvements have been desired.
この発明は上記事情に鑑みなされたもので、仕
上圧延操業に伴い発生するフユームガスを、ベン
チユリースクラバーを用いた従来の集塵装置と変
わらない高い集塵効率で集塵処理することができ
ると共に、その従来形に比し消費電力が少ないだ
けでなく設備も特殊なブロワや大形のモータを使
用しなくて済み、装置全体が簡単となる。従つて
運転経費及び設備費の大幅な低減が図れるなど、
非常に高性能で経済的な仕上圧延設備用集塵装置
を提供することを目的とする。
This invention was made in view of the above circumstances, and it is possible to collect fume gas generated during finish rolling operations with high dust collection efficiency equivalent to that of conventional dust collectors using ventilate scrubbers. Not only does it consume less power than the conventional type, but it also eliminates the need for special blowers and large motors, making the entire device simpler. Therefore, operating costs and equipment costs can be significantly reduced, etc.
The purpose is to provide a highly efficient and economical dust collector for finishing rolling equipment.
この発明は、前記目的を達成するために、被圧
延材が送られて来る仕上ミルスタンドを覆う集塵
フードで仕上圧延操業に伴い発生する水蒸気を含
んだ酸化鉄等のフユームガスを捕集し、そのフユ
ームガスをブロアによりダクトを介して集塵機に
吸煙導通して集塵処理する仕上圧延設備用集塵装
置において、前記集塵機として低圧損の湿式慣性
集塵機を設置し、且つその集塵機に前記集塵フー
ドからフユームガスを吸煙導通するダクト途中に
フユームガス加湿用の散水器を設けると共に、そ
のダクトの前記集塵機直前に散水式プレダストコ
レクタを設けて構成したから、装置全体としての
圧力損失が大幅に低減して小電力化が図れると共
に、疎水性ダストを親水性に変えることにより除
塵し易くし、従来のベンチユリースクラバーであ
る洗浄式ダストコレクタに匹敵する高集塵効率が
得るようになる。
In order to achieve the above object, the present invention collects fume gas such as iron oxide containing water vapor generated during finishing rolling operations in a dust collection hood that covers a finishing mill stand to which rolled materials are sent, In a dust collector for finishing rolling equipment in which the fume gas is sucked and conducted to a dust collector through a duct by a blower for dust collection, a wet inertial dust collector with a low pressure drop is installed as the dust collector, and the dust collector is connected to the dust collector from the dust collection hood. In addition to installing a water sprinkler for humidifying fume gas in the middle of the duct that sucks and conducts fume gas, a sprinkler-type pre-dust collector is installed in the duct just before the dust collector, so the pressure loss of the entire device is significantly reduced and the system is small. Not only can it be powered by electricity, it also makes it easier to remove dust by converting hydrophobic dust to hydrophilic dust, achieving high dust collection efficiency comparable to the cleaning type dust collector that is the conventional ventilium scrubber.
以下この発明の一実施例を図面に従い説明す
る。先ず第１図は全体の概略構成図で、図中１は
高速仕上圧延設備を示し、搬送路２の途中にその
搬送方向に間隔を存して複数の仕上ミルスタンド
３ａ乃至３ｆが列設され、その仕上ミルスタンド
３ａ乃至３ｆの各圧延ローラ間に搬送路２を介し
て赤熱鋼塊等の被圧延材（図示せず）が高速で順
に送り込まれて段階的に圧延仕上加工される。こ
うした熱間仕上圧延設備１に対してその圧延操業
に伴い発生するフユームガスを集塵処理する集塵
装置が設けられている。その集塵装置としては、
先ず上記熱間仕上圧延設備１の仕上ミルスタンド
３ａ〜３ｆまでの６基ある中で発塵量の多い後半
の３基の仕上ミルスタンド３ｄ〜３ｆにそれぞれ
集塵フード４が該仕上ミルスタンド３ｄ〜３ｆを
個々に覆うようにして設けられ、それら各集塵フ
ード４は吸煙ダクト５にそれぞれ接続されてい
る。その吸煙ダクト５の上記集塵フード４側方先
端位置又は道中位置に接続してフユームガス加湿
用の散水器６が設けられている。またその吸煙ダ
クト５の基端側方には散水式プレダストコレクタ
７が接続されている。その散水式プレダストコレ
クタ７の近傍にはその排気口側にダクト８を介し
接続して低圧損の湿式慣性集塵機９が設置され、
さらにその湿式慣性集塵機９の排気口側にダクト
１０を介し接続してブロワ１１が設置され、その
ブロワ１１の排気側は排気筒１２に接続されてい
る。
An embodiment of the present invention will be described below with reference to the drawings. First of all, FIG. 1 is a schematic diagram of the entire structure, and 1 in the figure indicates a high-speed finishing rolling facility, in which a plurality of finishing mill stands 3a to 3f are arranged in a line along a conveying path 2 at intervals in the conveying direction. A material to be rolled (not shown) such as a red-hot steel ingot is sequentially fed at high speed between the rolling rollers of the finishing mill stands 3a to 3f via a conveyance path 2, and is rolled and finished in stages. The hot finishing rolling equipment 1 is provided with a dust collector for collecting fume gas generated during the rolling operation. As the dust collector,
First, among the six finishing mill stands 3a to 3f of the hot finishing rolling equipment 1, the latter three finishing mill stands 3d to 3f, which generate a large amount of dust, each have a dust collection hood 4 attached to the finishing mill stand 3d. - 3f, and each dust collection hood 4 is connected to a smoke suction duct 5. A water sprinkler 6 for humidifying fume gas is connected to the side end position of the dust collection hood 4 of the smoke suction duct 5 or at a midway position. Further, a sprinkler type pre-dust collector 7 is connected to the side of the base end of the smoke suction duct 5. A wet inertial dust collector 9 with low pressure loss is installed near the sprinkler type pre-dust collector 7 and connected to the exhaust port side via a duct 8.
Further, a blower 11 is installed connected to the exhaust port side of the wet inertial dust collector 9 via a duct 10, and the exhaust side of the blower 11 is connected to an exhaust pipe 12.
ここで、上記散水式プレダストコレクタ７は、
下部にホツパーを有する円筒タンク形状をしてい
ると共に、給水機構７ａを設けた構成で、吸煙ダ
クト５を介して上端から下方に向け吸煙導通され
て来るフユームガスに対し散水ノズルより水を噴
射し、そのフユームガス中のダクトを下部ホツパ
ーに落下せしめて適度な前集塵処理を低圧損で行
なうものである。 Here, the sprinkler type pre-dust collector 7 is
It has a cylindrical tank shape with a hopper at the bottom and is equipped with a water supply mechanism 7a, which injects water from a water spray nozzle to the fume gas that is sucked and conducted downward from the upper end through the smoke suction duct 5, The fume gas is allowed to fall through a duct into the lower hopper to perform appropriate pre-dust collection with low pressure loss.
また、上記湿式慣性集塵機９は、一般にロート
クロンと称される一種の遠心分離式の公知の湿式
集塵機で、下部に除塵用のホツパ付き水槽を有
し、その水面上にＳ字型インペラーを有した構成
で、そのＳ字型インペラーをフユームガスが通過
する際に、そのフユームガスの風速が増し、その
空気流により引込まれた水が激しく泡立ちながら
フユームガスと撹拌混合し、その結果フユームガ
ス中の加湿されて質量を増したダストに上記イン
ペラーの湾曲面で生じた遠心力が効果的に作用し
て該ダストを水で捕え、さらにそのダストを捕え
た水がインペラー末端よりウオーターカーテンと
なつて空気中のダストを捕集しながら水面に落下
し、これで水及びダストと分離した清浄空気はバ
ツフル型のエリミネータで更に水切して機外に導
出し、上記水と一緒に水面に落ちたダストはスラ
ツジとして下部ホツパ底部に沈澱堆積して適宜除
去できる。この集塵効率は粒径0.5μ以上で99パー
セント以上であり、圧力損失は略250mmAqと非常
に低い。 The wet inertial dust collector 9 is a type of centrifugal type well-known wet dust collector generally called a Rotochron, and has a water tank with a hopper for dust removal at the bottom and an S-shaped impeller above the water surface. When the fume gas passes through the S-shaped impeller, the wind speed of the fume gas increases, and the water drawn in by the airflow stirs and mixes with the fume gas while vigorously bubbling, resulting in the humidification of the fume gas and its mass. The centrifugal force generated on the curved surface of the impeller effectively acts on the increased dust, trapping the dust with water, and the water that traps the dust forms a water curtain from the end of the impeller, trapping the dust in the air. The clean air that falls to the water surface while being collected and is separated from the water and dust is further drained by a full-type eliminator and led out of the machine. Precipitates are deposited on the bottom and can be removed as appropriate. The dust collection efficiency is 99% or more for particles with a particle size of 0.5 μ or more, and the pressure loss is extremely low at approximately 250 mmAq.
上記ブロワ１１は仕上圧延操業に伴うフユーム
ガス発生に応じて回転数制御されると共に、その
主ダンパーである吸煙風量調整ダンパー（図示せ
ず）が開閉制御されるようになつている。つまり
通常仕上圧延設備１では赤熱鋼塊等の被圧延材が
適当な間隔を存して送り込まれて来ると言つた操
業パターンを採用することから、連続して吸煙集
塵運転を行なつても無駄が多いので、その操業パ
ターンに合せて吸煙集塵を行なうべくブロワ１１
を制御するようにしている。その構成は先ず上記
仕上圧延設備１の搬送路２を挟んで一組の光セン
サー等の第１検出器１３と第２検出器１４とが設
置されている。その第１検出器１３は搬送路２の
第１段目の仕上ミルスタンド３ａよりも搬送方向
手前に位置して、そこを通る被圧延材を検出して
被圧延材侵入信号を出力する。また第２検出器１
４は上記搬送路２の最終段の仕上ミルスタンド３
ｆの後部に位置して、そこを通る被圧延材を検出
して被圧延材通過完了信号を出力する。一方これ
ら信号を受けて各種制御指令を出す電算機等の制
御部１５が第３図に示す如く設けられており、こ
の制御部１５からブロワ１１の回転数制御機構１
６とその吸煙風量調整用のダンパー開閉機構１７
に指令信号が出されて制御されるようになつてい
る。即ち、第４図にフローチヤートで示す如く、
第１検出器１３からの被圧延材侵入検出信号が来
ると、制御部１５は被圧延材が第４段目の仕上ミ
ルスタンド３ｄに到達する時間を算出すると共
に、ブロワ１１のアイドル低回転から予め設定し
た高速回転に立上がる時間を上記到達時間から減
算し、その算出時間にタイミングを合せてブロワ
回転数制御機構１６に増速指令信号を出し、同時
にダンパー開閉機構１７に全開指令信号を出す。
また上記第２検出器１４からの被圧延材通過完了
信号が来ると、制御部１５は各集塵フード４内の
残煙回収時間を確保してから、ブロワ回転数制御
機構１６にアイドル低回転数までの減速指令信号
を出すと同時に、ダンパー開閉機構１７に全閉指
令信号を出す構成である。 The rotation speed of the blower 11 is controlled in accordance with the generation of fume gas during the finish rolling operation, and its main damper, a smoke suction air volume adjusting damper (not shown), is controlled to open and close. In other words, the finishing rolling equipment 1 normally adopts an operation pattern in which materials to be rolled, such as red-hot steel ingots, are fed in at appropriate intervals, so even if continuous smoke suction and dust collection operation is performed, Since there is a lot of waste, blower 11 is installed to collect smoke and dust according to the operating pattern.
I'm trying to control it. The structure is such that a first detector 13 and a second detector 14, such as a pair of optical sensors, are installed across the conveyance path 2 of the finishing rolling equipment 1. The first detector 13 is located in front of the first-stage finishing mill stand 3a of the conveyance path 2 in the conveyance direction, detects the rolled material passing therethrough, and outputs a rolled material intrusion signal. Also, the second detector 1
4 is a finishing mill stand 3 at the final stage of the conveyance path 2
It is located at the rear of point f, detects the rolled material passing there, and outputs a rolled material passing completion signal. On the other hand, a control unit 15 such as a computer which receives these signals and issues various control commands is provided as shown in FIG.
6 and its damper opening/closing mechanism 17 for adjusting the smoke suction air volume.
A command signal is issued to control the system. That is, as shown in the flowchart in Figure 4,
When the rolled material intrusion detection signal comes from the first detector 13, the control unit 15 calculates the time for the rolled material to reach the finishing mill stand 3d of the fourth stage, and also calculates the time required for the rolled material to reach the finishing mill stand 3d of the fourth stage, The preset time for high speed rotation to rise is subtracted from the arrival time, and in time with the calculated time, a speed increase command signal is issued to the blower rotation speed control mechanism 16, and at the same time, a full open command signal is issued to the damper opening/closing mechanism 17. .
Further, when the rolled material passing completion signal is received from the second detector 14, the control section 15 secures the residual smoke collection time in each dust collection hood 4, and then sets the blower rotation speed control mechanism 16 to idle low speed. The damper opening/closing mechanism 17 is configured to issue a fully close command signal to the damper opening/closing mechanism 17 at the same time as it issues deceleration command signals up to several times.
而して、上記構成の作用を述べると、まずこの
熱間仕上圧延設備１の圧延操業に伴いその仕上ミ
ルスタンド３ｄ〜３ｆから多量に発生するフユー
ムガスは、各集塵フード４から吸煙ダクト５を介
して、その先端及び道中の散水器６にて適度に加
湿され、次に散水式のプレダストコレクタ７に吸
煙導通され、そこで給水機構７ａのノズルからの
散水によりフユームが落とされて適度に前集塵さ
れ、つぎに湿式慣性集塵機９に吸煙導通されてＳ
字型インペラーに水を引込みながら高速で通され
て前述した如くフユームが捕集除去される。これ
にてフユームガスは従来のベンチユリースクラバ
ーを用いた集塵装置と同様に高集塵効率で確実に
集塵処理されて、完全に清浄化された状態で排気
筒１２から大気中に放出されて、建屋内の作業環
境の改善は勿論のこと大気の公害問題も解消でき
る。 To describe the operation of the above configuration, first, a large amount of fume gas generated from the finishing mill stands 3d to 3f during the rolling operation of the hot finishing rolling equipment 1 is transferred from each dust collection hood 4 to the smoke suction duct 5. It is moderately humidified by the water sprinkler 6 at the tip and along the way, and then the smoke is sucked and conducted to the sprinkler-type pre-dust collector 7, where the fume is dropped by water spray from the nozzle of the water supply mechanism 7a and is moderately humidified. The dust is collected and then passed through the wet inertial dust collector 9 for suction and S
The water is drawn into the shape impeller and passed through it at high speed, and the fumes are collected and removed as described above. In this way, the fume gas is reliably collected with high dust collection efficiency in the same way as a conventional dust collector using a ventilary scrubber, and is released into the atmosphere from the exhaust stack 12 in a completely purified state. This not only improves the working environment inside the building, but also solves the problem of air pollution.
また、上記散水式プレダストコレクタ７及び湿
式慣性集塵機９は従来のベンチユリースクラバー
に比して約1/4と低圧損で、それだけブロワ１１
の電力消費が大幅に節減できると共に、装置の簡
略化や備費の低減が可能となる。 In addition, the water sprinkler type pre-dust collector 7 and wet type inertial dust collector 9 have a pressure drop that is approximately 1/4 lower than that of a conventional ventilure scrubber, and the blower 11 has a lower pressure loss.
In addition to significantly reducing power consumption, it is also possible to simplify the equipment and reduce equipment costs.
一方、上記集塵装置のブロワ１１は前述した制
御システムにより、被圧延材が仕上ミルスタンド
に通されて発塵している時のみ回転数が上げられ
ると共にダンパーが全開されて、所要の吸煙風量
を確保するが、それ以外はブロワ１１は低回転数
のアイドル状態にされると共にダンパーが全閉さ
れるので、より一層消費電力の大幅な節減が可能
となる。 On the other hand, the blower 11 of the dust collector is controlled by the control system described above to increase the rotation speed and fully open the damper only when the material to be rolled passes through the finishing mill stand and generates dust, thereby increasing the required smoke suction air volume. However, other than that, the blower 11 is kept in an idle state with a low rotational speed and the damper is fully closed, making it possible to further reduce power consumption.
なお、上記実施例では熱間圧延について述べた
が、冷間圧延にも同様に適用できるもので、本発
明の要旨を変更するものではない。 In addition, although hot rolling was described in the above embodiment, it can be similarly applied to cold rolling, and does not change the gist of the present invention.
この発明は上述した如くなしたから、仕上圧延
操業に伴い発生するフユームガスを、ベンチユリ
ースクラバーを用いた従来の集塵装置と変わらな
い高い集塵効率で集塵処理することができると共
に、その従来形に比しかなり低圧損で消費電力が
大幅に少なくて済み、且つ処理風量が多く、装置
全体として簡略化が可能で、運転経費及び設備費
の大幅な低減が図れるなど、非常に高性能で経済
的な装置となる。
Since this invention has been made as described above, it is possible to collect and process fume gas generated during finishing rolling operation with the same high dust collection efficiency as that of a conventional dust collector using a ventilary scrubber, and It has extremely high performance, with considerably lower pressure drop and much lower power consumption compared to other types, as well as a large processing air volume, allowing for the overall simplification of the equipment, and significant reductions in operating and equipment costs. It becomes an economical device.
図面はこの発明の一実施例を示すもので、第１
図は全体の概略的構成図、第２図はブロワの回転
制御状態をグラフで示す説明図、第３図はブロワ
制御システムのブロツク図、第４図は同フローチ
ヤート図である。
１……仕上圧延設備、２……搬送路、３ａ〜３
ｆ……仕上ミルスタンド、４……集塵フード、５
……吸煙ダクト、６……加湿用散水器、７……散
水式プレダクトコレクタ、８，１０……ダクト、
９……湿式慣性集塵機、１１……ブロワ、１２…
…排気筒、１３……第１検出器、１４……第２検
出器、１４……制御部、１６……ブロワ回転数制
御機構、１７……ダンパー開閉機構。
The drawings show one embodiment of the invention.
2 is an explanatory diagram showing the rotation control state of the blower in a graph, FIG. 3 is a block diagram of the blower control system, and FIG. 4 is a flowchart of the same. 1... Finish rolling equipment, 2... Conveyance path, 3a-3
f...Finishing mill stand, 4...Dust collection hood, 5
... Smoke duct, 6 ... Humidifying water sprinkler, 7 ... Water sprinkler type pre-duct collector, 8, 10 ... Duct,
9...Wet inertial dust collector, 11...Blower, 12...
...Exhaust pipe, 13...First detector, 14...Second detector, 14...Control unit, 16...Blower rotation speed control mechanism, 17...Damper opening/closing mechanism.
Claims (1)
覆う集塵フードで仕上圧延操業に伴い発生する水
蒸気を含んだ酸化鉄等のフユームガスを捕集し、
そのフユームガスをブロアによりダクトを介して
集塵機に吸煙導通して集塵処理する仕上圧延設備
用集塵装置において、前記集塵機として低圧損の
湿式慣性集塵機を設置し、且つその集塵機に前記
集塵フードからフユームガスを吸煙導通するダク
ト途中にフユームガス加湿用の散水器を設けると
共に、そのダクトの前記集塵機直前に散水式プレ
ダストコレクタを設けて構成したことを特徴とす
る仕上圧延設備用集塵装置。 ２ ブロワは吸煙風量調整ダンパーを有し、且つ
被圧延材が仕上ミルスタンドに送られて来て仕上
圧延操業に伴うフユームガス発生時には、回転数
制御機構により該ブロワが高速回転状態に制御さ
れると共に、前記吸煙風量調整ダンパーがダンパ
ー開閉機構により全開状態に制御され、その仕上
圧延操業時以外には回転数制御機構によりブロワ
が低回転のアイドル状態に制御されると共に、吸
煙風量調整ダンパーがダンパー開閉機構により全
閉状態に制御される構成としたことを特徴とする
特許請求の範囲第１項記載の仕上圧延設備用集塵
装置。[Scope of Claims] 1. A dust collection hood that covers a finishing mill stand to which materials to be rolled are sent collects fume gas such as iron oxide containing water vapor generated during finishing rolling operations,
In a dust collector for finishing rolling equipment in which the fume gas is sucked and conducted to a dust collector through a duct by a blower for dust collection, a wet inertial dust collector with a low pressure drop is installed as the dust collector, and the dust collector is connected to the dust collector from the dust collection hood. A dust collector for finishing rolling equipment, characterized in that a water sprinkler for humidifying fume gas is provided in the middle of a duct for sucking and conducting fume gas, and a sprinkler type pre-dust collector is provided in the duct immediately before the dust collector. 2. The blower has a smoke suction air volume adjustment damper, and when the material to be rolled is sent to the finishing mill stand and fume gas is generated due to the finishing rolling operation, the blower is controlled to a high speed rotation state by the rotation speed control mechanism. , the smoke suction air volume adjustment damper is controlled to be fully open by the damper opening/closing mechanism, and the rotation speed control mechanism controls the blower to be in a low rotation idle state except during the finishing rolling operation, and the smoke suction air volume adjustment damper is controlled to the full open state by the damper opening/closing mechanism. The dust collector for finishing rolling equipment according to claim 1, characterized in that the dust collector is configured to be controlled to a fully closed state by a mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60063465A JPS61222613A (en) | 1985-03-29 | 1985-03-29 | Dust collector for finish rolling installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60063465A JPS61222613A (en) | 1985-03-29 | 1985-03-29 | Dust collector for finish rolling installation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61222613A JPS61222613A (en) | 1986-10-03 |
| JPH0244602B2 true JPH0244602B2 (en) | 1990-10-04 |
Family
ID=13230012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60063465A Granted JPS61222613A (en) | 1985-03-29 | 1985-03-29 | Dust collector for finish rolling installation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61222613A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009095747A (en) * | 2007-10-16 | 2009-05-07 | Nissan Motor Co Ltd | Dust collector and dust collecting method |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101148906B1 (en) * | 2009-01-28 | 2012-05-29 | 현대제철 주식회사 | Stack for separating dust and dust collector for finishing mill therewith |
| JP5760825B2 (en) * | 2011-08-05 | 2015-08-12 | Ｊｆｅスチール株式会社 | Dust collection fan control method and dust collection fan control system |
| CN103878179B (en) * | 2014-03-25 | 2015-11-11 | 中冶南方工程技术有限公司 | Water spray dust arrester |
| CN111744956B (en) * | 2020-07-24 | 2024-04-16 | 中冶南方工程技术有限公司 | Hot rolling mill and hot rolling unit |
-
1985
- 1985-03-29 JP JP60063465A patent/JPS61222613A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009095747A (en) * | 2007-10-16 | 2009-05-07 | Nissan Motor Co Ltd | Dust collector and dust collecting method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61222613A (en) | 1986-10-03 |
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