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 PDFInfo
- 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
Links
Images
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)
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)
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)
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 |
-
1980
- 1980-05-09 DE DE19803017884 patent/DE3017884A1/de not_active Withdrawn
-
1981
- 1981-04-27 DE DE8181103147T patent/DE3165015D1/de not_active Expired
- 1981-04-27 AT AT81103147T patent/ATE8586T1/de not_active IP Right Cessation
- 1981-04-27 EP EP81103147A patent/EP0039816B1/fr not_active Expired
Patent Citations (5)
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)
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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