EP0039816A1 - Procédé pour l'optimalisation continuelle du point de travail électrique d'un filtre électrostatique humide - Google Patents

Procédé pour l'optimalisation continuelle du point de travail électrique d'un filtre électrostatique humide Download PDF

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Publication number
EP0039816A1
EP0039816A1 EP81103147A EP81103147A EP0039816A1 EP 0039816 A1 EP0039816 A1 EP 0039816A1 EP 81103147 A EP81103147 A EP 81103147A EP 81103147 A EP81103147 A EP 81103147A EP 0039816 A1 EP0039816 A1 EP 0039816A1
Authority
EP
European Patent Office
Prior art keywords
filter
voltage
mean value
electrical
actuator
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
Application number
EP81103147A
Other languages
German (de)
English (en)
Other versions
EP0039816B1 (fr
Inventor
Helmut Dipl.-Ing. Herklotz
Günter Mehler
Franz Dipl.-Ing. Neulinger
Helmut Dipl.-Ing. Schummer
Horst Dr. Dipl.-Ing. Daar
Walter Dipl.-Ing. Schmidt
Heinrich Winkler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Group AG
Siemens AG
Original Assignee
Metallgesellschaft AG
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Metallgesellschaft AG, Siemens AG filed Critical Metallgesellschaft AG
Priority to AT81103147T priority Critical patent/ATE8586T1/de
Publication of EP0039816A1 publication Critical patent/EP0039816A1/fr
Application granted granted Critical
Publication of EP0039816B1 publication Critical patent/EP0039816B1/fr
Expired legal-status Critical Current

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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
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/16—Plant or installations having external electricity supply wet type
    • 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
    • B03C3/66—Applications of electricity supply techniques
    • B03C3/68—Control systems therefor

Definitions

  • the invention relates to a method for the continuous optimization of the electrical operating point of an electrostatic wet filter, which is connected to an AC network via an electrical actuator.
  • Electrostatic separators for cleaning gases have been known for a long time.
  • the voltage at the filter is regulated in such a way that a predetermined filter current and / or a predetermined flashover frequency is established.
  • Such wet filters are regulated to constant filter current today.
  • This predetermined filter current value can lead to an optimal electrical operating point of the filter when the filter is set;
  • the object of the present invention is to provide a method with which the electrical operating point of the wet filter can be continuously optimized.
  • control of the actuator is iteratively changed automatically at predetermined time intervals until the mean value of the measured filter DC voltage is in the range of the attainable maximum of this mean value.
  • the percentage can be changed automatically depending on the measured dust load of the clean gas and / or the electrical power consumed.
  • an AC network N feeds a high-voltage rectifier 3 via a controllable thyristor actuator 1 and a high-voltage transformer 2, which supplies the required DC voltage for the electrostatic filter 4 designed as a wet filter.
  • the control voltage U st for the tax rate 5 of the actuator 1 is now selected so that a predetermined value of the average DC filter voltage results.
  • a value proportional to the filter direct voltage U F is taken from the filter 4 in a known manner and fed to an averager 8.
  • This value U Fm together with a setpoint value of the DC filter voltage U FR stored in the memory 12, is applied to a regulator 6 which controls the control voltage U st for the tax rate 5 forms.
  • the setpoint U FRI ie the operating point at which the filter operates, is formed in the following manner.
  • the control voltage U st is continuously increased by a timer 7, which acts on the controller 6, starting from a relatively low value U o of the filter voltage. If curve I in FIG.
  • the new maximum value U ' FM is again determined, starting from a relatively low value of the modulation, and reduced by a certain factor as the new target value U FR made available to controller 6.
  • a value proportional to the filter direct current I F - line 14 - is also limited to the limitation of the Given controller 6.
  • the output signal of the controller 6 is then limited so that the current does not increase any further.
  • the reduction factor in the link 11 is not chosen to be fixed, but is changed as a function of the dust load and / or the electrical power consumed.
  • a multiplication element 13 can be provided, which forms a value from the mean DC filter voltage and the filter current and sets the reduction factor in the reduction element 11 in accordance with this value.
  • the reduction factor can also be changed as a function of the clean gas dust loading detected by a measuring device 15.
  • the search algorithm for finding the voltage maximum can also be changed somewhat, in such a way that the search is not carried out from a relatively low value of the filter voltage, but rather the change in the mean value of the filter voltage and the number of breakdowns in successive ones Search periods of, for example, 2 seconds can be compared with one another.
  • the control voltage U st is automatically reduced by a predetermined amount if: K (N + 1)> K (N) and U F (N + 1)> U Fm (N); otherwise the control voltage U st is increased by a predetermined amount. This keeps a working point close to the maximum voltage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Electrostatic Separation (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Filtering Materials (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP81103147A 1980-05-09 1981-04-27 Procédé pour l'optimalisation continuelle du point de travail électrique d'un filtre électrostatique humide Expired EP0039816B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81103147T ATE8586T1 (de) 1980-05-09 1981-04-27 Verfahren zur fortlaufenden optimierung des elektrischen arbeitspunktes eines elektrostatischen nassfilters.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803017884 DE3017884A1 (de) 1980-05-09 1980-05-09 Verfahren zur fortlaufenden optimierung des elektrischen arbeitspunktes eines elektrostatischen nassfilters
DE3017884 1980-05-09

Publications (2)

Publication Number Publication Date
EP0039816A1 true EP0039816A1 (fr) 1981-11-18
EP0039816B1 EP0039816B1 (fr) 1984-07-25

Family

ID=6102046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103147A Expired EP0039816B1 (fr) 1980-05-09 1981-04-27 Procédé pour l'optimalisation continuelle du point de travail électrique d'un filtre électrostatique humide

Country Status (3)

Country Link
EP (1) EP0039816B1 (fr)
AT (1) ATE8586T1 (fr)
DE (2) DE3017884A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102449A2 (fr) * 1982-09-08 1984-03-14 Licentia Patent-Verwaltungs-GmbH Méthode de contrôle d'un séparateur électrostatique dans son fonctionnement de séparation et appareil de contrôle y relatif
WO1990011132A1 (fr) * 1989-03-28 1990-10-04 ABB Fläkt Aktiebolag Methode de controle de l'alimentation en courant par impulsions d'un separateur electrostatique
CN106607190A (zh) * 2016-12-31 2017-05-03 区永辉 一种空气净化器及方法
WO2018120860A1 (fr) * 2016-12-31 2018-07-05 区永辉 Dispositif et procédé de purification d'air

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907403A (en) * 1955-03-31 1959-10-06 Western Precipitation Corp Apparatus for controlling the operation of electrical precipitators
GB956783A (en) * 1960-08-05 1964-04-29 Brandt Herbert Voltage regulation in gas purifying plant
DE1557234A1 (de) * 1967-12-18 1970-05-21 Projektierungs Konstruktions U Verfahren und Einrichtung zur selbsttaetigen Regelung der Spannung von Elektrofilter-Hochspannungserzeugern
DE2357017A1 (de) * 1972-11-16 1974-05-30 Lodge Cottrell Ltd Automatischer spannungsregler
EP0031056A1 (fr) * 1979-12-11 1981-07-01 Metallgesellschaft Ag Procédé pour déterminer la limite du courant de filtre d'un électrofiltre

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907403A (en) * 1955-03-31 1959-10-06 Western Precipitation Corp Apparatus for controlling the operation of electrical precipitators
GB956783A (en) * 1960-08-05 1964-04-29 Brandt Herbert Voltage regulation in gas purifying plant
DE1557234A1 (de) * 1967-12-18 1970-05-21 Projektierungs Konstruktions U Verfahren und Einrichtung zur selbsttaetigen Regelung der Spannung von Elektrofilter-Hochspannungserzeugern
DE2357017A1 (de) * 1972-11-16 1974-05-30 Lodge Cottrell Ltd Automatischer spannungsregler
EP0031056A1 (fr) * 1979-12-11 1981-07-01 Metallgesellschaft Ag Procédé pour déterminer la limite du courant de filtre d'un électrofiltre

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102449A2 (fr) * 1982-09-08 1984-03-14 Licentia Patent-Verwaltungs-GmbH Méthode de contrôle d'un séparateur électrostatique dans son fonctionnement de séparation et appareil de contrôle y relatif
EP0102449A3 (fr) * 1982-09-08 1985-05-22 Licentia Patent-Verwaltungs-GmbH Méthode de contrôle d'un séparateur électrostatique dans son fonctionnement de séparation et appareil de contrôle y relatif
WO1990011132A1 (fr) * 1989-03-28 1990-10-04 ABB Fläkt Aktiebolag Methode de controle de l'alimentation en courant par impulsions d'un separateur electrostatique
CN106607190A (zh) * 2016-12-31 2017-05-03 区永辉 一种空气净化器及方法
WO2018120860A1 (fr) * 2016-12-31 2018-07-05 区永辉 Dispositif et procédé de purification d'air

Also Published As

Publication number Publication date
EP0039816B1 (fr) 1984-07-25
DE3165015D1 (en) 1984-08-30
ATE8586T1 (de) 1984-08-15
DE3017884A1 (de) 1981-11-19

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