JPH0445217B2 - - Google Patents
Info
- Publication number
- JPH0445217B2 JPH0445217B2 JP10544088A JP10544088A JPH0445217B2 JP H0445217 B2 JPH0445217 B2 JP H0445217B2 JP 10544088 A JP10544088 A JP 10544088A JP 10544088 A JP10544088 A JP 10544088A JP H0445217 B2 JPH0445217 B2 JP H0445217B2
- Authority
- JP
- Japan
- Prior art keywords
- dust
- dust collection
- water
- steam
- cleaning
- 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
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- Electrostatic Separation (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は高炉、転炉等で発生する副生ガスの除
塵に使用する湿式電気集塵装置における集塵板洗
浄水配管、ノズル及び集塵板のスケール付着防止
方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dust collecting plate cleaning water pipe, a nozzle, and a dust collector in a wet electrostatic precipitator used for removing dust from byproduct gas generated in a blast furnace, converter, etc. The present invention relates to a method for preventing scale adhesion on plates.
高炉等から発生する副生ガスの除塵に使用され
る湿式電気集塵装置は、集塵板と放電線の間に高
圧の直流電圧を印加し、その静電力により副生ガ
ス中のダストを集塵板へ付着させ、集塵板上方に
設けた集塵水散水ノズルへ給水ヘツダー、弁、給
水管を介して洗浄水を供給し、集塵板に水膜を形
成し、ダストを集塵板に固着させることなく洗い
流している。
A wet electrostatic precipitator used to remove dust from byproduct gas generated from blast furnaces, etc. applies a high DC voltage between a dust collection plate and a discharge wire, and uses the electrostatic force to collect dust in the byproduct gas. The dust is attached to the dust plate, and cleaning water is supplied to the dust collection water spray nozzle installed above the dust collection plate through the water supply header, valve, and water supply pipe, forming a water film on the dust collection plate, and the dust is removed from the dust collection plate. It washes off without sticking to the skin.
集塵装置において、洗浄水はコストの点から一
般的に排水処理を行つて再使用する循環方式をと
つているので、水質は悪くスケール性の高いもの
となつている。この為、集塵水散水ノズルのノズ
ル孔付近及び集塵板の集塵水散水部と非散水部の
境界面付近にスケールの付着が発生している。 In dust collectors, cleaning water is generally treated as waste water and then reused in a circulating system for cost reasons, resulting in poor water quality and high scalability. For this reason, scale adhesion occurs near the nozzle hole of the dust collection water sprinkling nozzle and near the interface between the dust collection water sprinkling part and the non-sprinkling part of the dust collecting plate.
このスケール付着は集塵水の散水不良を引きお
こしさらにスケール付着が成長すれば、ノズル詰
り及び集塵板水膜形成不良、集塵板ダスト固着の
原因となり、集塵板と放電線間の極間不良による
集塵効率の低下につながる。 This scale adhesion causes poor watering of the dust collection water, and if the scale adhesion grows further, it may cause nozzle clogging, poor water film formation on the dust collection board, and dust sticking to the dust collection board. This leads to a decrease in dust collection efficiency due to poor timing.
この為、従来の湿式電気集塵装置では、特開昭
62−102845号公報に示されるように不活性流体を
集塵洗浄水と同時に供給することで、その圧力に
よりスケール付着を防止する方法が行なわれてい
る。 For this reason, with conventional wet electrostatic precipitators,
As shown in Japanese Patent Application No. 62-102845, a method is used in which an inert fluid is supplied simultaneously with dust collection and cleaning water to prevent scale adhesion using the pressure of the inert fluid.
前述した従来の洗浄水散水ノズルのスケール付
着防止方法では、徐々に成長する硬質化したスケ
ールに対して、蒸気と集塵水を同じに混入させた
流体を用いる事もあるが、この流体の圧力では、
スケール除去効果としては小さい為、ノズルに成
長したスケールを２〜３ケ月程度で電気集塵装置
を停止させて掃除する必要性がある。
In the conventional method for preventing scale adhesion in cleaning water spray nozzles described above, a fluid mixed with steam and dust collection water is sometimes used to treat the gradually growing and hardened scale, but the pressure of this fluid is Well then,
Since the scale removal effect is small, it is necessary to stop the electrostatic precipitator every 2 to 3 months to clean the scale that has grown on the nozzle.
本発明の目的は、この徐々に成長する硬質のス
ケールに対する除去効果を高めることにある。 The purpose of the present invention is to enhance the removal effect on this gradually growing hard scale.
本発明は湿式電気集塵装置における集塵板洗浄
水の供給を定期的に停止し、集塵板洗浄水のヘツ
ダー管に蒸気のみを供給することを特徴とする湿
式電気集塵装置における集塵板洗浄水配管、ノズ
ル及び集塵板のスケール付着防止方法である。
The present invention provides dust collection in a wet type electrostatic precipitator, which is characterized in that the supply of dust collection plate cleaning water in the wet type electrostatic precipitator is periodically stopped and only steam is supplied to the header pipe of the dust collection plate cleaning water. This is a method for preventing scale adhesion on plate washing water piping, nozzles, and dust collection plates.
本発明は、前述のように集塵水を停止し、蒸気
のみを供給することにより、硬質化したスケール
と管壁の熱膨張量の違いにより剥離させ、かつ蒸
気の圧力により吹き飛ばす作用を有する。
The present invention has the effect of causing the hardened scale to separate from the tube wall due to the difference in the amount of thermal expansion, and blowing it away by the pressure of the steam, by stopping the dust collection water and supplying only steam as described above.
本発明は第１図、第２図において湿式電気集塵
装置１の集塵板２上部に取付フランジ１２を介し
て取付けた集塵板洗浄用のヘツダー管３に複数個
の集塵水散水ノズル４を設け、集塵水供給ヘツダ
ー管１０から分岐された集塵水供給配管６を接続
し集塵板２の表面に水膜を形成し、補集したダス
トを洗い流す。これとは別に蒸気供給ヘツダー管
９より分岐された蒸気供給配管５を集塵板洗浄用
ヘツダー管３に繋ぎ込み、蒸気を供給できる構造
とする。集塵水供給配管６及び蒸気供給配管５に
は、それぞれ電動又は圧空で開閉作動する弁、
８，７を設け、弁開閉用の制御装置１１により、
タイマーで開閉を行う。
1 and 2, a plurality of dust collecting water spray nozzles are installed in a header pipe 3 for cleaning the dust collecting plate, which is attached to the upper part of the dust collecting plate 2 of a wet electrostatic precipitator 1 via a mounting flange 12. 4 is provided, and a dust collection water supply pipe 6 branched from the dust collection water supply header pipe 10 is connected to form a water film on the surface of the dust collection plate 2 to wash away the collected dust. Separately, a steam supply pipe 5 branched from the steam supply header pipe 9 is connected to the header pipe 3 for cleaning the dust collecting plate, so that steam can be supplied. The dust-collected water supply piping 6 and the steam supply piping 5 each have valves that are opened and closed by electric power or compressed air.
8 and 7, and a control device 11 for opening and closing the valve,
Open and close with a timer.
定常操業時は、集塵水用弁８を開とし蒸気用弁
７は、閉にし、集塵板表面に水膜を形成する。ま
たスケール洗浄時は、集塵水用弁８を閉とし、蒸
気用弁７は、開となるようタイマー設定を行な
う。 During normal operation, the dust collection water valve 8 is opened and the steam valve 7 is closed to form a water film on the dust collection plate surface. Further, during scale cleaning, a timer is set so that the dust collection water valve 8 is closed and the steam valve 7 is opened.
蒸気洗浄は、付着ダストの性状、水質、使用蒸
気の圧力に応じた適正な頻度で行なう必要性があ
る。一例をあげれば、蒸気圧力が８〜10Kg／cm2Ｇ
で、水質（PH：９〜11）、付着ダスト主成分が
FeOのものであれば、周１回×数分間の蒸気洗浄
頻度でスケール付着防止効果が得られた。 Steam cleaning needs to be carried out at an appropriate frequency depending on the properties of attached dust, water quality, and pressure of steam used. For example, if the steam pressure is 8~10Kg/ cm2G
The water quality (PH: 9-11) and the main component of attached dust are
With FeO, the effect of preventing scale adhesion was obtained with a steam cleaning frequency of once per cycle for several minutes.
本発明は上述した如く、湿式集塵装置におい
て、集塵板洗浄用のヘツダー管に蒸気のみを間欠
的に供給することで圧力によるスケール除去効果
と、熱によるスケールと配管の熱膨張の違いによ
る剥離効果を生み出し、集塵洗浄配管及び集塵水
散水ノズルのスケール付着防止効果を高める。
As described above, the present invention provides a wet dust collector in which only steam is intermittently supplied to the header pipe for cleaning the dust collecting plate, thereby achieving a scale removal effect due to pressure and a difference in thermal expansion between scale and piping due to heat. Creates a peeling effect and enhances the effect of preventing scale adhesion on dust collection cleaning pipes and dust collection water spray nozzles.
従つて安定した集塵水膜が形成され、集塵装置
の安定操業と集塵効率の維持が図られ、ノズル集
塵板等のスケール清掃頻度の低減（６ケ月〜１年
に１度のメンテナンス頻度）に寄与できる。 Therefore, a stable dust collection water film is formed, ensuring stable operation of the dust collector and maintenance of dust collection efficiency, reducing the frequency of scale cleaning of the nozzle dust collection plate, etc. (maintenance once every 6 months to once a year) frequency).
第１図は、本発明の実施例を示す説明図、第２
図は、第１図を上部から見た集塵板洗浄用ヘツダ
ー管及び集塵板の配置図（Ａ−Ａ矢視図）、第３
図は、集塵板散水ノズルの配置の詳細を示す図。
FIG. 1 is an explanatory diagram showing an embodiment of the present invention, and FIG.
The figure is a layout diagram of the header pipe for cleaning the dust collecting plate and the dust collecting plate (A-A arrow view) as seen from the top of Fig. 1.
The figure is a diagram showing details of the arrangement of the dust collector plate water nozzle.
Claims (1)
給を定期的に停止し、集塵板洗浄水のヘツダー管
に蒸気のみを供給することを特徴とする湿式電気
集塵装置における集塵板洗浄水配管、ノズル及び
集塵板のスケール付着防止方法。1 Dust collector plate cleaning in a wet type electrostatic precipitator characterized by periodically stopping the supply of dust collector plate cleaning water in the wet type electrostatic precipitator and supplying only steam to the header pipe of the dust collector plate cleaning water. Method for preventing scale adhesion on water piping, nozzles, and dust collection plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63105440A JPH01281159A (en) | 1988-04-30 | 1988-04-30 | Method for preventing adhesion of scales on pipe for supply of washing water to dust collecting plates, nozzle and dust collecting plate in wet type electric dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63105440A JPH01281159A (en) | 1988-04-30 | 1988-04-30 | Method for preventing adhesion of scales on pipe for supply of washing water to dust collecting plates, nozzle and dust collecting plate in wet type electric dust collector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01281159A JPH01281159A (en) | 1989-11-13 |
| JPH0445217B2 true JPH0445217B2 (en) | 1992-07-24 |
Family
ID=14407653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63105440A Granted JPH01281159A (en) | 1988-04-30 | 1988-04-30 | Method for preventing adhesion of scales on pipe for supply of washing water to dust collecting plates, nozzle and dust collecting plate in wet type electric dust collector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01281159A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005000805A (en) * | 2003-06-12 | 2005-01-06 | Matsushita Ecology Systems Co Ltd | Roadside dust collection device |
| JP4974922B2 (en) * | 2008-02-04 | 2012-07-11 | 中国電力株式会社 | Flushing piping structure that supplies cleaning water to the dust collector |
| CN104668090B (en) * | 2015-02-06 | 2017-03-29 | 江苏保丽洁环境科技股份有限公司 | Two-region wet electrostatic cooking fume remover |
| CN107051739B (en) * | 2017-05-12 | 2018-09-25 | 浙江诸暨骏达环保设备有限公司 | A kind of wet electrical dust precipitator |
-
1988
- 1988-04-30 JP JP63105440A patent/JPH01281159A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01281159A (en) | 1989-11-13 |
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