JP2002119889A - Wet type electric dust collector with apparatus for washing middle step of dust collecting electrode - Google Patents
Wet type electric dust collector with apparatus for washing middle step of dust collecting electrodeInfo
- Publication number
- JP2002119889A JP2002119889A JP2000313963A JP2000313963A JP2002119889A JP 2002119889 A JP2002119889 A JP 2002119889A JP 2000313963 A JP2000313963 A JP 2000313963A JP 2000313963 A JP2000313963 A JP 2000313963A JP 2002119889 A JP2002119889 A JP 2002119889A
- Authority
- JP
- Japan
- Prior art keywords
- dust
- dust collecting
- electrode
- collecting electrode
- type electric
- 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.)
- Pending
Links
Landscapes
- Electrostatic Separation (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は高濃度のダストや
高粘着性のダストを含む排ガスを処理する湿式電気集塵
機の内部に大量の水を上段及び中段から連続または間欠
噴霧させながら高電圧を連続荷電し集塵効率及び連続安
定運転の維持を計る手段に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wet-type electrostatic precipitator for treating exhaust gas containing high-concentration dust and highly viscous dust, by continuously or intermittently spraying a large amount of water from an upper stage and a middle stage while applying a high voltage. The present invention relates to a means for measuring dust collection efficiency and continuous stable operation by charging.
【０００２】[0002]
【従来の技術】図３の如く一定以上の水量で洗浄中に荷
電すると上部で噴霧させた水ミストが活線スプレーノズ
ル１１、放電極用上部枠組１２、集塵極１３、放電極用
下部枠組１４の各々の間で水膜状に変化しやすく断続的
な火花放電発生の原因となっている。特に集塵極１３に
て集積された水ミストは水膜となり、さらに集塵極下部
より落下する際には安全な水の帯となってそれがほぼ４
０ＫＶから６０ＫＶ程度の電圧が荷電されている放電極
１５や放電極用下部枠組１４とつながり火花放電を連続
的に発生させたり時には短絡状態に到ることもある。2. Description of the Related Art As shown in FIG. 3, when charged during washing with a certain amount of water or more, a water mist sprayed on the upper portion generates a hot spray nozzle 11, an upper frame 12 for discharge electrodes, a dust collecting electrode 13, and a lower frame for discharge electrodes. It is easy to change into a water film between each of the fourteen, and this causes intermittent spark discharge. In particular, the water mist collected at the dust collecting electrode 13 forms a water film, and when falling from the lower part of the dust collecting electrode, forms a safe water band, which becomes almost four.
It may be connected to the discharge electrode 15 or the discharge electrode lower frame 14 charged with a voltage of about 0 KV to about 60 KV to continuously generate a spark discharge or sometimes to be in a short circuit state.
【０００３】そこで運転中に放電極や集塵極に付着する
ダストの堆積速度を遅らせる目的で活線スプレーノズル
１１により、火花放電を起こさない範囲の単位段面積１
ｍ2当たりほぼ１リットル／ｍｉｎ程度の水を噴霧さ
せ、上段洗浄スプレーノズル１６により８時間から１２
時間に１回の間欠間隔で荷電を停止させた状態で単位断
面積１ｍ2 当たり２０リットル／ｍｉｎから４０リット
ル／ｍｉｎ程度の水を１０分間程度噴霧させ放電極や集
塵極に付着したダストを洗浄していた。洗浄水が集中す
る集塵板上部のダストは除去できるが中央部から下部に
付着したダストは完全には除去できないでいた。この残
留ダストも連続安定運転の維持を阻害するものである。In order to reduce the deposition rate of dust adhering to the discharge electrode and the dust collection electrode during operation, the unit spray area of the unit step area 1 in a range where spark discharge does not occur is made by the hot spray nozzle 11.
Water is sprayed at a rate of approximately 1 liter / min per m 2 , and the upper cleaning spray nozzle 16 is used for 8 hours to 12 hours.
While charging is stopped at intermittent intervals once a time, water of about 20 liters / min to 40 liters / min per unit sectional area of 1 m 2 is sprayed for about 10 minutes to remove dust adhering to the discharge electrode and the dust collection electrode. Had been washed. The dust on the upper part of the dust collecting plate where the washing water was concentrated could be removed, but the dust attached from the center to the lower part could not be completely removed. This residual dust also hinders the maintenance of continuous stable operation.
【０００４】洗浄している間は荷電を停止しているので
湿式電気集塵機の除塵効果は失われ処理ガスの中のダス
トはそのまま放出されてしまう。特に高濃度のダストや
高粘着性のダストを含む排ガスを処理する湿式電気集塵
機においては、洗浄する周期は短くなりかつ洗浄時間は
長くなるので集塵機としての本来の機能を発揮できない
でいる。Since the charging is stopped during the cleaning, the dust removing effect of the wet type electrostatic precipitator is lost, and the dust in the processing gas is released as it is. In particular, in a wet electrostatic precipitator that treats exhaust gas containing high-concentration dust and highly sticky dust, the cleaning cycle becomes short and the cleaning time becomes long, so that the original function as a dust collector cannot be exhibited.
【０００５】[0005]
【発明が解決しようとする課題】この発明は湿式電気集
塵機の内部に大量の水を上段及び中段から連続または間
欠噴霧させ内部を常に清浄に保ち放電極に４０ＫＶから
６０ＫＶ程度の電圧を荷電しても火花放電を連続的に発
生させたり、短絡状態に到ることを防止しようとするも
のである。According to the present invention, a large amount of water is continuously or intermittently sprayed from the upper stage and the middle stage into the wet type electrostatic precipitator to keep the inside always clean and charge the discharge electrode with a voltage of about 40 KV to 60 KV. This is also intended to prevent continuous generation of spark discharge or short circuit.
【０００６】[0006]
【課題を解決するための手段】中段洗浄スプレーノズル
を新たに設備し、洗浄スプレーノズル、放電極用上部枠
組、集塵極、放電極用下部枠組の各位置を規定しかつ集
塵極下部に効果的な水切り部を設ける。[Means for Solving the Problems] A new cleaning nozzle for the middle stage is newly provided, and the positions of the cleaning spray nozzle, the upper frame for the discharge electrode, the dust collecting electrode, and the lower frame for the discharge electrode are defined and the lower portion of the dust collecting electrode is provided. Provide an effective drainer.
【０００７】[0007]
【発明の実施の形態】この発明による湿式電気集塵機
は、内部に大量の水を上段及び中段から連続または間欠
噴霧させながら高電圧を連続荷電し集塵効率及び連続安
定運転の維持ができるものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS A wet-type electrostatic precipitator according to the present invention is capable of continuously charging a high voltage while continuously or intermittently spraying a large amount of water from an upper stage and a middle stage to maintain dust collection efficiency and continuous stable operation. is there.
【０００８】[0008]
【実施例】図１の如く上段洗浄スプレーノズル１６と放
電極用上部枠組１２との距離Ａ、放電極用上部枠組１２
と集塵極１３上部との距離Ｂ及び集塵極１３下部と放電
極用下部枠組１４との距離Ｃは各々、集塵極１３間の距
離Ｄのほぼ１．７倍からほぼ２．７倍程度とする。上段
洗浄スプレーノズル１６は集塵極１３上部上方でのデッ
ドスペースを極力少なくする目的で最低でも２方向より
左右対称に噴霧させる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, the distance A between the upper cleaning spray nozzle 16 and the upper frame 12 for the discharge electrode, the upper frame 12 for the discharge electrode.
The distance B between the dust collection electrode 13 and the upper part of the dust collection electrode 13 and the distance C between the lower part of the dust collection electrode 13 and the discharge electrode lower frame 14 are each approximately 1.7 to 2.7 times the distance D between the collection electrodes 13. Degree. The upper cleaning spray nozzle 16 sprays symmetrically from at least two directions in order to minimize the dead space above the dust collecting electrode 13.
【０００９】上段洗浄スプレーノズル１６に供給される
洗浄水の圧力は、ほぼ２Ｋｇ／ｃｍ 2 以上とし水量が単
位断面積１ｍ2 当たりほぼ２０〜４０リットル／ｍｉｎ
程度になるように洗浄スプレーノズルの型式と個数を決
定する。図１の側面断面図に示す洗浄スプレーノズルの
全体的配列Ｅは、上段洗浄スプレーノズル１６より噴霧
される水ミストの噴霧角度を考慮し集塵極１３上部にお
けるデッドスペースを極力少なくする様に集塵極１３間
の距離Ｄのほぼ１．０倍からほぼ２．５倍程度とする。
中段洗浄スプレーノズル２１の洗浄水は、上段洗浄スプ
レーノズル１６の圧力、水量と同程度とし全ての集塵極
１３間の距離Ｄのほぼ中央から左右対称に２方向より噴
霧させる。ノズル先端の高さは集塵極１３の高さのほぼ
中央の位置になるように配置する。The upper cleaning spray nozzle 16 is supplied to the upper cleaning spray nozzle 16.
The pressure of the washing water is approximately 2 kg / cm Two And the amount of water
1mTwo Approximately 20-40 liters / min
The type and number of cleaning spray nozzles
Set. The cleaning spray nozzle shown in the side sectional view of FIG.
The overall arrangement E is sprayed from the upper cleaning spray nozzle 16
Considering the spray angle of the water mist,
Between the dust collection electrodes 13 to minimize the dead space
From about 1.0 to about 2.5 times the distance D.
The washing water of the middle washing spray nozzle 21 is
All the dust collection electrodes are set to the same level as the pressure of the nozzle 16 and the amount of water.
From two directions symmetrically from the center of the distance D between 13
Fog. The height of the nozzle tip is almost the same as the height of the dust collection electrode 13.
Arrange so that it is in the center position.
【００１０】集塵極１３下部の水切り板１７の構成は図
２の如く集塵極１３下部を山型にカットし両面に平鋼形
状の水切り板１７を取り付ける。山型の角度Ｆは、ほぼ
５度から７度程度にする。水切り板の幅はほぼ５０ｍｍ
程度とし、厚みはほぼ５ｍｍから１３ｍｍ程度で集塵機
１３上部の補強材１８の厚みと同じくする。さらに水切
り効果を高めるために水切り棒１９を取り付ける。水切
り棒１９の端からケーシング２０までの距離Ｇはほぼ５
０ｍｍから１００ｍｍ程度とし水切り板１７及び水切り
棒１９に沿って流下してきた水膜を飛散させずにケーシ
ング２０に伝え流下させる。As shown in FIG. 2, the structure of the draining plate 17 below the dust collecting electrode 13 is such that the lower part of the dust collecting electrode 13 is cut into a mountain shape and flat steel shaped draining plates 17 are attached to both sides. The angle F of the chevron is approximately 5 to 7 degrees. The width of the drainer is almost 50mm
And the thickness is about 5 mm to 13 mm, which is the same as the thickness of the reinforcing member 18 on the top of the dust collector 13. In order to further enhance the draining effect, a draining rod 19 is attached. The distance G from the end of the draining rod 19 to the casing 20 is approximately 5
The water film flowing down along the draining plate 17 and the draining rod 19 is set to about 0 mm to about 100 mm, and is transmitted to the casing 20 without being scattered.
【００１１】[0011]
【発明の効果】中段洗浄スプレーノズルを新たに設備
し、上段及び中段洗浄スプレーノズル、放電極用上部枠
組、集塵極、放電極用下部枠組の各位置を規定すること
により、湿式電気集塵機内部全体を常に清浄に保つと同
時に各装置部品間における火花放電開始電圧を上げスプ
レー水による火花放電を防止させる。集塵極下部に効果
的な水切り部を設けることにより、集塵極にて集積され
た水膜を放電極用下部枠組から離れたケーシング面に沿
って流下させるので火花放電が防止される。内部に単位
断面積１ｍ2 当たりほぼ４０リットル／ｍｉｎ程度の大
量の水を連続または間欠噴霧させながら、４０ＫＶから
６０ＫＶ程度の高電圧を連続荷電し集塵効率及び連続安
定運転の維持ができるものである。According to the present invention, the middle stage spray nozzle is newly provided, and the upper stage and the middle stage spray nozzle, the upper frame for the discharge electrode, the dust collecting electrode, and the lower frame for the discharge electrode are defined, so that the inside of the wet-type electrostatic precipitator is provided. At the same time, the whole is kept clean and at the same time, the spark discharge starting voltage between each device component is increased to prevent spark discharge due to spray water. By providing an effective draining portion below the dust collecting electrode, the water film accumulated at the dust collecting electrode is caused to flow down along the casing surface remote from the discharge electrode lower frame, thereby preventing spark discharge. A high voltage of about 40 KV to 60 KV is continuously charged while continuously or intermittently spraying a large amount of water of about 40 liters / min per unit cross-sectional area of 1 m 2 to maintain dust collection efficiency and continuous stable operation. is there.
【図１】この発明の湿式電気集塵機の要部断面図であ
る。FIG. 1 is a sectional view of a main part of a wet electric dust collector according to the present invention.
【図２】この発明の湿式電気集塵機の要部拡大断面図で
ある。FIG. 2 is an enlarged sectional view of a main part of the wet electric dust collector of the present invention.
【図３】従来型の湿式電気集塵機の要部断面図である。FIG. 3 is a sectional view of a main part of a conventional wet-type electrostatic precipitator.
１１ 活線スプレーノズル １２ 放電極用上部枠組 １３ 集塵極 １４ 放電極用下部枠組 １５ 放電極 １６ 上段洗浄スプレーノズル １７ 水切り板 １８ 補強材 １９ 水切り棒 ２０ ケーシング ２１ 中段洗浄スプレーノズル DESCRIPTION OF SYMBOLS 11 Live-line spray nozzle 12 Upper frame for discharge electrode 13 Dust collecting electrode 14 Lower frame for discharge electrode 15 Discharge electrode 16 Upper cleaning spray nozzle 17 Drain plate 18 Reinforcement material 19 Drain bar 20 Casing 21 Middle cleaning spray nozzle
Claims (3)
着するダストに大量の水を上段及び中段より連続噴霧さ
せ集塵極及び放電極を洗浄し連続荷電可能な湿式電気集
塵機。1. A wet type electrostatic precipitator capable of continuously spraying a large amount of water from upper and middle stages onto dust adhering to a dust collecting electrode and a discharging electrode of a wet type electric precipitator to wash the dust collecting electrode and the discharging electrode and continuously charging the dust collecting electrode and the discharging electrode.
着するダストに大量の水を上段及び中段より間欠噴霧さ
せ集塵極及び放電極を洗浄し連続荷電可能な湿式電気集
塵機。2. A wet electric dust collector capable of continuously charging a large amount of water by intermittently spraying a large amount of water from an upper stage and a middle stage onto dust adhering to a dust collecting electrode and a discharging electrode of a wet electric dust collector to wash the dust collecting electrode and the discharging electrode.
を設けた湿式電気集塵機。3. A wet-type electrostatic precipitator in which a drainer is provided below a collecting electrode of the wet-type electric precipitator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000313963A JP2002119889A (en) | 2000-10-13 | 2000-10-13 | Wet type electric dust collector with apparatus for washing middle step of dust collecting electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000313963A JP2002119889A (en) | 2000-10-13 | 2000-10-13 | Wet type electric dust collector with apparatus for washing middle step of dust collecting electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002119889A true JP2002119889A (en) | 2002-04-23 |
Family
ID=18793293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000313963A Pending JP2002119889A (en) | 2000-10-13 | 2000-10-13 | Wet type electric dust collector with apparatus for washing middle step of dust collecting electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002119889A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20211439U1 (en) * | 2002-07-12 | 2003-11-20 | Hengst Gmbh & Co Kg | Electric separator with rinsing cleaning |
| US7662219B2 (en) | 2007-03-05 | 2010-02-16 | Hitachi Plant Technologies, Ltd. | Wet type electrostatic precipitator |
| KR101037350B1 (en) | 2008-12-08 | 2011-05-26 | 주식회사 동명길광 | Dust collector scrubbing apparatus of wet electrostatic precipitator |
| JP2011194375A (en) * | 2010-03-23 | 2011-10-06 | Sumitomo Metal Mining Engineering Co Ltd | Wet electric dust collector and dust collection method |
| JP2013252477A (en) * | 2012-06-06 | 2013-12-19 | Sumitomo Metal Mining Engineering Co Ltd | Power control device and method for electric dust collection device |
| CN103920591A (en) * | 2014-04-17 | 2014-07-16 | 江苏天洁环境工程有限公司 | Microchannel high-efficiency wet-type electric precipitator |
| CN104668097A (en) * | 2015-03-09 | 2015-06-03 | 天通新环境技术有限公司 | Wet electric-precipitation dust-collecting plate and wet electric precipitator |
| JP2015202485A (en) * | 2014-04-16 | 2015-11-16 | 古河産機システムズ株式会社 | Wet electric dust collector |
| CN105521871A (en) * | 2016-01-20 | 2016-04-27 | 无锡市东邦环保科技有限公司 | Water film forming device of wet-type electrostatic precipitator |
| CN105597935A (en) * | 2016-03-09 | 2016-05-25 | 浙江天地环保工程有限公司 | Horizontal hygroelectricity efficient discharge electrode and frame structure thereof |
| CN105944838A (en) * | 2016-06-30 | 2016-09-21 | 广东佳德环保科技有限公司 | Titanium electrode ionization tube for wet electric dust collector |
| JP2017080718A (en) * | 2015-10-30 | 2017-05-18 | 住友金属鉱山エンジニアリング株式会社 | Electrode chamber inside repair device for electric precipitator |
| CN107297113A (en) * | 2017-07-06 | 2017-10-27 | 常州大学 | A kind of waste gas residual heat is reclaimed and pollutant integrated conduct method and system |
| CN109013062A (en) * | 2018-08-23 | 2018-12-18 | 广东菲叶达环保科技有限公司 | A kind of wet electrostatic flue gas removing device of dyeing and finishing setter |
-
2000
- 2000-10-13 JP JP2000313963A patent/JP2002119889A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20211439U1 (en) * | 2002-07-12 | 2003-11-20 | Hengst Gmbh & Co Kg | Electric separator with rinsing cleaning |
| US7115153B2 (en) | 2002-07-12 | 2006-10-03 | Hengst Gmbh & Co. Kg | Electric separator with a rinsing cleaning system |
| US7662219B2 (en) | 2007-03-05 | 2010-02-16 | Hitachi Plant Technologies, Ltd. | Wet type electrostatic precipitator |
| KR101037350B1 (en) | 2008-12-08 | 2011-05-26 | 주식회사 동명길광 | Dust collector scrubbing apparatus of wet electrostatic precipitator |
| JP2011194375A (en) * | 2010-03-23 | 2011-10-06 | Sumitomo Metal Mining Engineering Co Ltd | Wet electric dust collector and dust collection method |
| JP2013252477A (en) * | 2012-06-06 | 2013-12-19 | Sumitomo Metal Mining Engineering Co Ltd | Power control device and method for electric dust collection device |
| JP2015202485A (en) * | 2014-04-16 | 2015-11-16 | 古河産機システムズ株式会社 | Wet electric dust collector |
| CN103920591A (en) * | 2014-04-17 | 2014-07-16 | 江苏天洁环境工程有限公司 | Microchannel high-efficiency wet-type electric precipitator |
| CN104668097A (en) * | 2015-03-09 | 2015-06-03 | 天通新环境技术有限公司 | Wet electric-precipitation dust-collecting plate and wet electric precipitator |
| JP2017080718A (en) * | 2015-10-30 | 2017-05-18 | 住友金属鉱山エンジニアリング株式会社 | Electrode chamber inside repair device for electric precipitator |
| CN105521871A (en) * | 2016-01-20 | 2016-04-27 | 无锡市东邦环保科技有限公司 | Water film forming device of wet-type electrostatic precipitator |
| CN105597935A (en) * | 2016-03-09 | 2016-05-25 | 浙江天地环保工程有限公司 | Horizontal hygroelectricity efficient discharge electrode and frame structure thereof |
| CN105944838A (en) * | 2016-06-30 | 2016-09-21 | 广东佳德环保科技有限公司 | Titanium electrode ionization tube for wet electric dust collector |
| CN105944838B (en) * | 2016-06-30 | 2018-07-06 | 广东佳德环保科技有限公司 | Wet electrical dust precipitator Ti electrode ionization tube |
| CN107297113A (en) * | 2017-07-06 | 2017-10-27 | 常州大学 | A kind of waste gas residual heat is reclaimed and pollutant integrated conduct method and system |
| CN109013062A (en) * | 2018-08-23 | 2018-12-18 | 广东菲叶达环保科技有限公司 | A kind of wet electrostatic flue gas removing device of dyeing and finishing setter |
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