JPS5942055A - Electric precipitator - Google Patents
Electric precipitatorInfo
- Publication number
- JPS5942055A JPS5942055A JP15256682A JP15256682A JPS5942055A JP S5942055 A JPS5942055 A JP S5942055A JP 15256682 A JP15256682 A JP 15256682A JP 15256682 A JP15256682 A JP 15256682A JP S5942055 A JPS5942055 A JP S5942055A
- Authority
- JP
- Japan
- Prior art keywords
- hammering
- dust
- voltage
- signal
- collecting
- 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
- 239000012716 precipitator Substances 0.000 title abstract 4
- 239000000428 dust Substances 0.000 claims abstract description 55
- 239000012717 electrostatic precipitator Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 230000007423 decrease Effects 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract 2
- 239000000725 suspension Substances 0.000 abstract 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/74—Cleaning the electrodes
- B03C3/76—Cleaning the electrodes by using a mechanical vibrator, e.g. rapping gear ; by using impact
- B03C3/763—Electricity supply or control systems therefor
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Electrostatic Separation (AREA)
Abstract
Description
【発明の詳細な説明】
と集じん極との間に印加する直流高電圧を，集じん極槌
打と連動させて制（財）し、ダストの槌打剥離性を向上
させるに好適な電気集じん装置に関する。[Detailed Description of the Invention] An electric current suitable for controlling the DC high voltage applied between the dust collecting pole and the dust collecting pole in conjunction with the hammering of the dust collecting pole, and improving the ability to remove dust by hammering. Regarding dust collection equipment.
従来より，電気集じん装置において，集じんしようとす
るダストの電気抵抗率が１０１１〔Ω・ｃｍ ）以上と
なると，ｊＩη電離現象が発生し，東じん性能が著しく
低下することが知られている。このような逆電離現象は
，集じん極に付着したダスト層の抵抗が高いため，集じ
ん空間から，ダスト層に流れ込むイオンがそのダスト層
表面に蓄積し，層内このような逆電離現象を防止する対
策は，従来より種々考えられているが，その一つを説明
すると，要するに，集じん極に付着したダストの払い落
しを確実に行うことである。Conventionally, it has been known that in electrostatic precipitators, when the electrical resistivity of the dust to be collected exceeds 1011 [Ωcm2], the jIη ionization phenomenon occurs, and the dust collection performance deteriorates significantly. . This type of reverse ionization phenomenon occurs because the resistance of the dust layer attached to the dust collection electrode is high, so ions flowing into the dust layer from the dust collection space accumulate on the surface of the dust layer, causing this type of reverse ionization phenomenon within the layer. Various preventive measures have been considered in the past, but one of them is to ensure that the dust adhering to the dust collecting electrode is removed.
したがって、従来より，集じん極に付着したダストの払
い落しを確実に行なう方法として，槌打装置を強化した
り，スクレーノξ−によってダストをかき取るようにし
た方式等が提供されて込た。Therefore, as methods for reliably brushing off the dust adhering to the dust collection electrode, methods have been proposed in the past, such as strengthening the hammering device or scraping off the dust with a screener.
しかしながら、高抵抗ダストの付着力は，通常のダスト
の場合の１０倍から１００倍以上も大きく１例えば槌打
装置によりダストを除く場合、電極の機械的強度限界１
で槌打力を大きくしても。However, the adhesion force of high-resistance dust is 10 to 100 times greater than that of normal dust. For example, when removing dust with a hammering device, the mechanical strength limit of the electrode is 1.
Even if you increase the hammering force with .
ダストを十分に剥離させることは不可能であった。It was not possible to remove the dust sufficiently.
一方、スクレーパーによってダストをかき取る方式は、
ダストの剥離には有効な方法ではあるものの、装置が複
雑なことから、保守が難しいという欠点がある。On the other hand, the method of scraping the dust with a scraper is
Although this is an effective method for removing dust, it has the disadvantage that maintenance is difficult due to the complexity of the device.
このように高抵抗ダストの付着力が大きい原因電極間の
印加電圧を零にして槌打をする無荷電槌打や、あるいは
槌打剥離性が良くなる点まで電極間の印加電圧を低下さ
せて、槌打する方法が考えられている。しかしながら、
槌打時に、印加電圧を降ドさせるために、この期間に集
じん効率が低下するという欠点があり、１１えて槌打に
よる逸出ダストが増加するなどの欠点があった。The reason for the large adhesion force of high-resistance dust is the uncharged hammering method in which the applied voltage between the electrodes is set to zero, or the applied voltage between the electrodes is lowered to the point where the hammering improves the removability. , a method of hammering has been considered. however,
Since the applied voltage is lowered during hammering, there is a drawback that the dust collection efficiency decreases during this period, and furthermore, the amount of dust escaping due to hammering increases.
本発明の目的は、前日己従来技術の欠点を解消し集じん
極と放電極との間の印加電圧を集じん極槌打と連動させ
て制御することにより、ダストの槌打剥離性を向上させ
る電気集じん装置を提供するにある。The purpose of the present invention is to eliminate the drawbacks of the prior art and improve the ability to remove dust by hammering by controlling the voltage applied between the dust collecting electrode and the discharge electrode in conjunction with the hammering of the dust collecting electrode. To provide an electrostatic precipitator that
本発明は、」一層目的を達成するために、逆電離が発生
するような高抵抗ダストの集じんする場合に、集じん極
と放電極との間に印加する電圧を。In order to further achieve the object of the present invention, the voltage applied between the dust collection electrode and the discharge electrode is applied when collecting high-resistance dust that causes reverse ionization.
所定の周期のパルス状に断続的に印加しても、集じん効
率は低下せず、かつ、集じん極槌打によるダストの剥離
効果が向上することに注目し、電極間に印加する直流高
電圧を、所定の周期の・ξルスＮ、−
作中に電極間に、断続的に印加するようにしたものであ
る。We focused on the fact that even when applied intermittently in a pulsed manner with a predetermined period, the dust collection efficiency does not decrease, and the dust removal effect by hammering the dust collection pole improves. A voltage is applied intermittently between the electrodes during operation at a predetermined cycle.
以下１本発明の実施例を図面に基づいて説明する。An embodiment of the present invention will be described below based on the drawings.
第１図は２本発明に係る電気集じん装置の一実施例を示
すブロック図である。第１図において。FIG. 1 is a block diagram showing an embodiment of an electrostatic precipitator according to the present invention. In FIG.
電気集じん装置は、低圧電源１をサイリスタ２を介して
昇圧トランス３の二次巻線に接続し、この昇圧トランス
２の二次巻線をンリコンプリツジ整流器４の交流端子に
接続し、かつブリッジ整流器４の直流端子を集じん器５
の集じん電極と放電電極との間に接続し、かつ槌打タイ
マー６から槌打指令１００とこれに四回してｂる指令信
号１．０１が出力されると、指令１００により前記集じ
ん器５の集じん電極の槌打装置（図示せず）が動作する
と共に、指令信号１０１により断続信号発生回路７が第
２図（ロ）に示すように、槌打タイマー６に連動して動
作して第３図に示すようなパルス状のんだザイリスタ制
苗η回路８がサイリスタ２を制御して第２図θＩＤに示
すような印加電圧を集じん器５の電極間に印加するよう
に構成されている。The electrostatic precipitator connects a low-voltage power supply 1 to a secondary winding of a step-up transformer 3 via a thyristor 2, connects the secondary winding of this step-up transformer 2 to an AC terminal of an integrated rectifier 4, and connects a bridge rectifier. Connect the DC terminal of 4 to the dust collector 5
When the hammering timer 6 outputs a hammering command 100 and a command signal 1.01 for four times, the command 100 causes the dust collector to The hammering device (not shown) for the dust collecting electrode 5 operates, and the intermittent signal generating circuit 7 operates in conjunction with the hammering timer 6 as shown in FIG. The pulsed soldered thyristor seedling control η circuit 8 as shown in FIG. 3 controls the thyristor 2 to apply an applied voltage as shown in FIG. has been done.
このように構成された電気集じん装置によれば次のよう
に動作する。The electrostatic precipitator configured as described above operates as follows.
；ｍ常運転時（ＴＩ 、Ｔ３．’ｒｓ ・−） ｕ、
ｉｍｌ＋ 信号発生回路７は、停止しておす、電気集
じん装置は、連続した直流電圧の印加により運転されて
いる。しかし、東じん棲の槌打が始まる時刻より、ある
設定時間だけ前の時刻になると、槌打タイマー６から断
続信号発生回路７に起動信号１．０１が送られ。;m During normal operation (TI, T3.'rs ・-) u,
The iml+ signal generation circuit 7 is stopped, and the electrostatic precipitator is operated by continuous application of DC voltage. However, when the time comes a certain set time before the time when the hammering of the Higashi Jinsei starts, a start signal 1.01 is sent from the hammering timer 6 to the intermittent signal generation circuit 7.
断続信号発生回路は、第３図に示すような期間ＴＯＮで
フル電圧となり１期間ＴｏＦＦ′″′Ｃ零となる・ぐル
ス状の断続した信号を発生する。この断続信号２００は
、サイリスタ制御回路８に加えられ、断続信号］００の
オフ（ＯＦＦ ）時間に相当する時間ＴｏＦＦ及びオン
（ＯＮ）時間に相当する時間ＴＯＮの間隔でサイリスタ
２を断続的に開閉し、集じん器に印加することにより、
休止時間中（Ｔ２． Ｔ４・・）に１ ダスト層表面の
電荷は、緩和されて、逆電離が抑制されることになる。The intermittent signal generation circuit generates an intermittent signal in the form of a pulse, which becomes full voltage during the period TON and becomes zero for one period ToFF'''C as shown in FIG. 3. This intermittent signal 200 is generated by the thyristor control circuit The thyristor 2 is intermittently opened and closed at intervals of a time ToFF corresponding to the OFF time and a time TON corresponding to the ON time of the intermittent signal]00 and applied to the dust collector. According to
During the pause time (T2, T4...), the charge on the surface of the dust layer is relaxed, and reverse ionization is suppressed.
したがって、このように休止時間を設けたにもかかわら
ず、集じん効率は、はとんど低下しない。しかも、電荷
が減ることにより、ダストの槌打剥離性が向上し、槌打
終了後、電気集じん装置を逆電離が発生していない正常
運転に復帰させることができる。Therefore, even though the downtime is provided in this way, the dust collection efficiency does not decrease at all. Moreover, since the electric charge is reduced, the ability to remove dust by hammering is improved, and after the hammering is completed, the electrostatic precipitator can be returned to normal operation in which no back ionization occurs.
尚、槌打する］秒乃至１分前から集じん槌打直前捷で、
あるいは槌打動作終了時まで、上記継続した電圧（第２
図（１１０参照）を集じん器５の電極間に印加すると１
本実施例は、最も効率がよかった。In addition, from 1 second to 1 minute before hammering, just before hammering,
Alternatively, the above-mentioned continuous voltage (second
When the voltage shown in the figure (see 110) is applied between the electrodes of the dust collector 5, 1
This example was the most efficient.
以」−述べたように本発明によれば、逆電離を発生する
ような高抵抗ベストに対しても、集じん極の槌打による
ダスト剥離が十分に行われ、逆電離に」：る集じん性能
低下を防１１−することができるという効用がある。As described above, according to the present invention, even with a high-resistance vest that causes reverse ionization, the dust is sufficiently removed by hammering the dust collecting electrode, and the dust is not collected. This has the effect of preventing deterioration in dust performance.
第１図は本発明に係る電気集じん装置の概略構成図を示
すブロック図、第２図は槌打タイマー断続信号発生回路
及び印加電圧の時間設定を示すタイムチャー１− 、第
３図は断続信号発生回路の出力信号を示す波形図である
。Fig. 1 is a block diagram showing a schematic configuration diagram of an electrostatic precipitator according to the present invention, Fig. 2 is a time chart 1- showing a hammering timer intermittent signal generation circuit and time setting of applied voltage, and Fig. 3 is an intermittent hammering timer. FIG. 3 is a waveform diagram showing an output signal of the signal generation circuit.
Ｊ−・低圧電源 ２・・・サイリスタ３ ・昇
圧トランス ４・・ブリッジ整流器５・・・集じん
器 ６・・・槌打タイマー７・・断続信号発生
回路 ８・・・サイリスタ制御回路。J-・Low voltage power supply 2...Thyristor 3・Step-up transformer 4...Bridge rectifier 5...Dust collector 6...Hammering timer 7...Intermittent signal generation circuit 8...Thyristor control circuit.
Claims (1)
圧をサイリスタにより制御する制（財）手段と、集じん
極に捕集したダストを所定の時間間隔で払い落とす槌打
装置とを備えた電気集じん装置きるような制御信号を十
ｄピ槌打装置の動作に同期して形成する断続信号発生回
路を有し、この断続信号発生回路からの制御信号により
上記サイリスタを制銅１するように構成されたことを％
徴とする電気集じん装置。A control means that uses a thyristor to control the DC high voltage applied between the dust collecting electrode and the discharge electrode of the dust multiplier, and a hammering device that shakes off the dust collected on the dust collecting electrode at predetermined time intervals. The thyristor is controlled by the control signal from the intermittent signal generating circuit, which generates a control signal that turns off the electrostatic precipitator, in synchronization with the operation of the ten-pin hammering device. Copper 1% configured to
Electrostatic precipitator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15256682A JPS5942055A (en) | 1982-09-03 | 1982-09-03 | Electric precipitator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15256682A JPS5942055A (en) | 1982-09-03 | 1982-09-03 | Electric precipitator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5942055A true JPS5942055A (en) | 1984-03-08 |
Family
ID=15543279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15256682A Pending JPS5942055A (en) | 1982-09-03 | 1982-09-03 | Electric precipitator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5942055A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03219043A (en) * | 1990-01-23 | 1991-09-26 | Topy Ind Ltd | Low carbon boron steel track shoe and its manufacture |
| JP2014533607A (en) * | 2011-11-29 | 2014-12-15 | アルストム テクノロジー リミテッドＡＬＳＴＯＭ Ｔｅｃｈｎｏｌｏｇｙ Ｌｔｄ | Method and apparatus for cleaning an electrostatic precipitator |
-
1982
- 1982-09-03 JP JP15256682A patent/JPS5942055A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03219043A (en) * | 1990-01-23 | 1991-09-26 | Topy Ind Ltd | Low carbon boron steel track shoe and its manufacture |
| JP2014533607A (en) * | 2011-11-29 | 2014-12-15 | アルストム テクノロジー リミテッドＡＬＳＴＯＭ Ｔｅｃｈｎｏｌｏｇｙ Ｌｔｄ | Method and apparatus for cleaning an electrostatic precipitator |
| US9630186B2 (en) | 2011-11-29 | 2017-04-25 | General Electric Technology Gmbh | Method and a device for cleaning an electrostatic precipitator |
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