JPS61125456A - Controlling method of electrical dust precipitator - Google Patents
Controlling method of electrical dust precipitatorInfo
- Publication number
- JPS61125456A JPS61125456A JP24620384A JP24620384A JPS61125456A JP S61125456 A JPS61125456 A JP S61125456A JP 24620384 A JP24620384 A JP 24620384A JP 24620384 A JP24620384 A JP 24620384A JP S61125456 A JPS61125456 A JP S61125456A
- Authority
- JP
- Japan
- Prior art keywords
- soot
- dust
- value
- charge
- dust concentration
- 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.)
- Granted
Links
Landscapes
- Electrostatic Separation (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は石炭等分燃焼させ、排出される煤塵含有ガスを
集塵する電気集塵装置［おいて、出口煤塵濃度を監視し
つつ、荷電を制御する方法に関する。Detailed Description of the Invention (Industrial Field of Application) The present invention is an electrostatic precipitator that burns equal parts of coal and collects the emitted dust-containing gas. Concerning how to control.
（従来の公知技術および当該発明が解決しようとする問
題点）
従来の電気集塵装置の自動荷電制御方法では、異常が発
生すると、作業員が荷電制御装置設置現場へ行き、個々
の荷電制御装置ｔ−調節していたが、この方法では制御
機器の一部に故障および異常が発生しても即座に煤塵濃
度の増加に対応できず、浄化されないガスが大量に大気
に放出されることがあった。(Conventional publicly known technology and problems to be solved by the present invention) In the conventional automatic charge control method for an electrostatic precipitator, when an abnormality occurs, a worker goes to the charge control device installation site and checks each charge control device. However, with this method, even if a part of the control equipment malfunctions or abnormalities occur, it is not possible to immediately respond to the increase in soot and dust concentration, and a large amount of unpurified gas may be released into the atmosphere. Ta.
（発明の目的）
本発明は、前記従来の公知技術の欠点を解消するためＫ
なされたもので、制御システムの一部に故障および異常
が発生した時の電気集塵装置のエラーリカバリ一方法を
提供することを目的とし、電気集塵装置の制御システム
の一部に故障及び異常が発生しても煤塵濃度を増加させ
ずに浄化されたガスを大気中に放出することにある。(Object of the Invention) The present invention aims to solve the drawbacks of the conventional known techniques.
The purpose is to provide an error recovery method for electrostatic precipitators when a failure or abnormality occurs in a part of the control system. The goal is to release purified gas into the atmosphere without increasing the soot and dust concentration even if it occurs.
（発明の構成）
本発明は、電気集塵装置の排ガス出口ラインに煤塵濃度
計を設置し、さらに、該煤塵濃度計と接続してコントロ
ーラを設けると共に、該コントローラにより電気集塵装
置の荷電を調整する荷電制御装置ｔ−設けてなるもので
あって、制御システムの一部に故障および異常が発生し
て煤塵濃度がコントローラ内にて異常になると予想判定
すると、該コントローラから該荷電制御装置へ最高荷電
指令値を出力した後、荷電指令値を修正しつつ、除々に
煤塵濃度許容範囲内に復帰させてなることを特徴とする
。(Structure of the Invention) The present invention installs a dust concentration meter in the exhaust gas outlet line of an electrostatic precipitator, further provides a controller connected to the dust concentration meter, and controls the charging of the electrostatic precipitator by the controller. The controller is equipped with a charge control device (t) to adjust the charge control device. The present invention is characterized in that after outputting the maximum charging command value, the charging command value is corrected to gradually return the dust concentration to within the permissible range.
（実施例） 以下、本発明の一実施例を第１図を参照して説明する。(Example) An embodiment of the present invention will be described below with reference to FIG.
１は、マスクコントローラで電気集塵袋ｆｌＥ Ｐ全体
を総合制御する装置である。このマスクコントローラＩ
Ｋは荷電制御装置２が複数個接続されていて、荷電装置
５の荷電を直接制御する。内部には予め設定されている
煤塵濃度の設定値が人力されており、現在の煤塵濃度と
比較して荷電指令値を求めるようになっている。３およ
び４は電気集塵装置排ガス煙道に設けられている煤ｌ１
ｌＩ濃度計およびセンサーで煙膚内の煤塵濃度を検出す
るためのものである。煤塵濃度計３はセンサー４から煙
道内を流れる排ガス中に例えば光を投射し、通過させる
と排ガス中の煤塵により透過光は散乱、吸収され減衰す
る。この光をセンサー４で受け、煤塵濃度計３で煤塵濃
度値を演算し、その結果をマスタコントローラ１へ連続
的に出力する。なお６は煙突である。1 is a device that comprehensively controls the entire electric dust collection bag flEP using a mask controller. This mask controller I
A plurality of charge control devices 2 are connected to K, and the charge of the charging device 5 is directly controlled. A preset value of soot and dust concentration is manually entered inside, and a charging command value is determined by comparing it with the current soot and dust concentration. 3 and 4 are soot l1 installed in the electrostatic precipitator exhaust gas flue.
It is used to detect the concentration of soot and dust in smoke using an II densitometer and sensor. The soot and dust concentration meter 3 projects, for example, light from the sensor 4 into the exhaust gas flowing in the flue, and when it passes, the transmitted light is scattered, absorbed, and attenuated by the soot and dust in the exhaust gas. This light is received by the sensor 4, the soot and dust concentration meter 3 calculates the soot and dust concentration value, and the result is continuously output to the master controller 1. Note that 6 is a chimney.
マスタコントローラｌには予め設定器により煤塵濃度値
の許容上限値と許容下限値が設定されており、（この許
容上限値と下限値とにはさまれた部分を以後、不感帯と
いう。）、又、煤塵濃度計３から人力した煤塵濃度値（
以後、濃度値という。）が不感帯上限値を離脱（上回っ
たり）、又は不感帯下限値を離脱（下回りたり）した時
の監視時間と荷電指令値の修正値（電流値又は出力山数
又は休止山数）も各々設定されている。マスターコント
ローラ１は煤塵濃度計３から入力した濃度値が不感帯内
にあるならば、各荷電制御装置２に前回出力したのと同
じ荷電指令値を出力するとともに、上記と同じ制御を継
続する。In the master controller l, the allowable upper limit value and allowable lower limit value of the dust concentration value are set in advance by a setting device (the area sandwiched between the allowable upper limit value and the allowable lower limit value is hereinafter referred to as a dead zone), , the soot and dust concentration value manually calculated from the soot and dust concentration meter 3 (
Hereinafter, this will be referred to as the concentration value. ) departs from (exceeds) the dead band upper limit value or departs from (goes below) the dead band lower limit value, and the correction value (current value or number of output peaks or number of pause peaks) of the monitoring time and charging command value are also set. ing. If the concentration value input from the dust concentration meter 3 is within the dead zone, the master controller 1 outputs the same charge command value as previously output to each charge control device 2, and continues the same control as described above.
次に第２図及び嬉３図を参照して本発明方法の具体的制
御方法を説明すると、仮に今、何らかの原因で煤塵濃度
計３から濃度値異常増の信号を入故障により出口煤塵濃
度が不感帯上限値を即離脱してしまうような緊急事部発
生として全ての荷電制御装置２に最高荷電指令を出力し
、荷電装置５の集塵効果を最大にする。その結果、ただ
ちに煤塵濃度計３からの入力の濃度値は不感帯下限を離
脱しく下回り）、これを検出したマスターコントローラ
１は不感帯下限離脱の監視タイマーを作動させ、監視時
間Ｔ、の時間が経過するのを待つとともにこの間は各荷
電制御装置２には現在出力している最高荷電指令を出力
し続け、最大の集塵効果を継続させる。監視時間Ｔ２経
過後、煤塵濃度計３から入力した濃度値が不感帯内に復
帰しているか否かチェックし復帰していれば、ＴＩの時
間監視を終了し最高荷電指令による通常制御を行ない復
帰していなければ集塵効果に余裕があるとして集塵効果
を下げる方向に荷電指令値を修正し、それを各荷電制御
装置２に出力し、荷電装置４の荷電を制御させるととも
に不感帯下限離脱の監視タイマーを再起動させ、次の監
視時間の経過を待つ。この間は上記の修正された荷電指
令値の出力を継続する。Next, to explain the specific control method of the method of the present invention with reference to Figs. 2 and 3, suppose that for some reason a signal indicating an abnormal increase in the concentration value is sent from the soot and dust concentration meter 3, and the outlet soot and dust concentration decreases due to a failure. In the event of an emergency situation where the upper limit of the dead zone is immediately exceeded, a maximum charging command is output to all the charging control devices 2, and the dust collection effect of the charging device 5 is maximized. As a result, the concentration value input from the dust concentration meter 3 immediately drops below the lower limit of the dead band), and upon detecting this, the master controller 1 activates the monitoring timer for leaving the lower limit of the dead band, and the monitoring time T elapses. During this time, the maximum charging command currently being output is continued to be output to each charge control device 2 to maintain the maximum dust collection effect. After the monitoring time T2 has elapsed, it is checked whether the concentration value input from the dust concentration meter 3 has returned to within the dead zone, and if it has returned, the time monitoring of TI is finished and normal control based on the maximum charge command is performed to return. If not, the charging command value is corrected in the direction of lowering the dust collection effect, assuming that there is a margin for the dust collection effect, and outputting it to each charge control device 2 to control the charge of the charging device 4, and monitor departure from the lower limit of the dead zone. Restart the timer and wait for the next monitoring time to elapse. During this time, output of the above-mentioned corrected charging command value is continued.
次の監視時間が経過し、入力した濃度値が不感帯内に復
帰していれば、Ｔ！の時間監視を終了し、現在出力中の
荷電指令値を継続して出力させる。If the next monitoring time has passed and the input concentration value has returned to within the dead zone, T! ends the time monitoring, and continues outputting the charging command value currently being output.
又入力した濃度値が不感帯内に復帰していなければ、前
述の方法で、さらに荷電指令値を修正し、出力するとと
もに次のＴ２の監視時間の経過を待つ。If the input concentration value has not returned to within the dead zone, the charging command value is further corrected using the method described above, and is output, while waiting for the next monitoring time T2 to elapse.
この荷電指令値の修正処理は煤塵濃度計３から入力した
濃度値が不感帯内へ復帰するまでくり返し行なわれる。This charging command value correction process is repeated until the concentration value input from the dust concentration meter 3 returns to within the dead zone.
又、同濃度値を不感帯内へ復帰させるべく荷電指令値の
修正処理を実施中に再度前述のような故障又は異常（他
荷Ｎ制御装置に発生）が発生したことを検出するとマス
ターコントローラは全荷電指令値の出力ののち（今まで
の監視時間の積算値は破棄し）上記の如く濃度値を不感
帯内へ復帰させるための荷電指令値の修正処理を初めか
らやり直す。Additionally, if the above-mentioned failure or abnormality (occurred in the other load N control device) is detected again while the charging command value is being corrected in order to return the same concentration value to within the dead zone, the master controller After outputting the charging command value (the accumulated value of the monitoring time up to now is discarded), the charging command value correction process is restarted from the beginning in order to return the concentration value to within the dead zone as described above.
次に煤塵濃度計３から故障信号を入力したり、断線等に
よシ濃度値の入力が途絶えるとフィードバック制御のフ
ィードバック値がなしとして上記故障が復旧されるまで
、最高荷電指令値を出力し最大の集塵効果を維持する。Next, if a fault signal is input from the dust concentration meter 3 or the input of the concentration value is interrupted due to a disconnection, etc., the feedback value of the feedback control will be set as "no" and the maximum charging command value will be output until the above fault is recovered. Maintains the dust collection effect.
そして故障の復旧を検出（故障信号の停止や濃度値の入
力が復帰）すると、濃度値を不感帯内に復帰させるべく
上記荷電指令値の修正処理を実行する。When recovery from the failure is detected (stopping of the failure signal or return of concentration value input), the charging command value correction process is executed to return the concentration value to within the dead zone.
又、荷電指令値の修正処理を実行中に再度前述の故障等
が発生すると、故障の復旧を検出するまで最高荷電指令
値を出力し続け、復旧ののち濃度値を不感帯内へ復帰さ
せるための荷電指令値の修正処理を初めからやり直す。In addition, if the above-mentioned failure occurs again while the charging command value correction process is being executed, the maximum charging command value will continue to be output until recovery from the failure is detected, and after recovery, the concentration value will be returned to within the dead zone. The charging command value correction process is restarted from the beginning.
Ｍ１図は本発明方法の具体的な一実施例を示す装置の概
略図、第２図および第３図はそれぞれ煤塵濃度値と経過
時間との関係を示すグラフである。
ｌ・・・・・・マスターコントローラ
２・・・・・・荷電制御装置 ３・・・・・・連続煤塵
濃度計４・・・・・・センサー ５・・・・・・荷電装
置 ６・・・・・・煙突■不感帯下限離脱点 ■不感帯
内復帰点手続補正ｍ（方式）
昭和６０年 ４月１８日FIG. M1 is a schematic diagram of an apparatus showing a specific embodiment of the method of the present invention, and FIGS. 2 and 3 are graphs showing the relationship between soot and dust concentration values and elapsed time, respectively. l...Master controller 2...Charging control device 3...Continuous dust concentration meter 4...Sensor 5...Charging device 6... ...Chimney■Dead band lower limit exit point ■Return point within dead zone Procedure correction m (method) April 18, 1985
Claims (1)
、さらに、該煤塵濃度計と接続してコントローラを設け
ると共に、該コントローラにより電気集塵装置の荷電を
調整する荷電制御装置を設けてなるものであって、制御
システムの一部に故障および異常が発生して煤塵濃度が
コントローラ内にて異常になると予想判定すると、該コ
ントローラから該荷電制御装置へ最高荷電指令値を出力
した後、荷電指令値を修正しつつ、除々に煤塵濃度許容
範囲内に復帰させてなることを特徴とする電気集塵装置
の制御方法。A dust concentration meter is installed in the exhaust gas outlet line of the electrostatic precipitator, and a controller is provided connected to the dust concentration meter, and a charge control device is provided that adjusts the charge of the electrostatic precipitator using the controller. When a failure or abnormality occurs in a part of the control system and it is predicted that the soot and dust concentration will become abnormal in the controller, the controller outputs the maximum charging command value to the charging control device, and then the charging 1. A method of controlling an electrostatic precipitator, characterized in that the command value is corrected and the soot and dust concentration is gradually returned to within an allowable range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24620384A JPS61125456A (en) | 1984-11-22 | 1984-11-22 | Controlling method of electrical dust precipitator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24620384A JPS61125456A (en) | 1984-11-22 | 1984-11-22 | Controlling method of electrical dust precipitator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61125456A true JPS61125456A (en) | 1986-06-13 |
| JPH0550351B2 JPH0550351B2 (en) | 1993-07-28 |
Family
ID=17145046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24620384A Granted JPS61125456A (en) | 1984-11-22 | 1984-11-22 | Controlling method of electrical dust precipitator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61125456A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63252554A (en) * | 1987-01-06 | 1988-10-19 | ザ ケミソン コーポレーション | Regulating system of flue gas by so3 |
| JP2009131758A (en) * | 2007-11-29 | 2009-06-18 | Chugoku Electric Power Co Inc:The | Device of operational control in charge suspension of electrical dust precipitator |
| JP2016537189A (en) * | 2013-11-13 | 2016-12-01 | プライメタルズ・テクノロジーズ・オーストリア・ゲーエムベーハー | Filtering of exhaust gas containing solid particles of metal plant |
-
1984
- 1984-11-22 JP JP24620384A patent/JPS61125456A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63252554A (en) * | 1987-01-06 | 1988-10-19 | ザ ケミソン コーポレーション | Regulating system of flue gas by so3 |
| JP2009131758A (en) * | 2007-11-29 | 2009-06-18 | Chugoku Electric Power Co Inc:The | Device of operational control in charge suspension of electrical dust precipitator |
| JP2016537189A (en) * | 2013-11-13 | 2016-12-01 | プライメタルズ・テクノロジーズ・オーストリア・ゲーエムベーハー | Filtering of exhaust gas containing solid particles of metal plant |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0550351B2 (en) | 1993-07-28 |
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