EP2582463B1 - Électrofiltre pour nettoyer des effluents gazeux chargés de poussière - Google Patents

Électrofiltre pour nettoyer des effluents gazeux chargés de poussière Download PDF

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Publication number
EP2582463B1
EP2582463B1 EP11743178.3A EP11743178A EP2582463B1 EP 2582463 B1 EP2582463 B1 EP 2582463B1 EP 11743178 A EP11743178 A EP 11743178A EP 2582463 B1 EP2582463 B1 EP 2582463B1
Authority
EP
European Patent Office
Prior art keywords
knocking
electrode
collecting
electrodes
discharge
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.)
Not-in-force
Application number
EP11743178.3A
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German (de)
English (en)
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EP2582463A2 (fr
Inventor
Josef Sattlecker
Dominik Steiner
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.)
Scheuch GmbH
Original Assignee
Scheuch GmbH
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Filing date
Publication date
Application filed by Scheuch GmbH filed Critical Scheuch GmbH
Publication of EP2582463A2 publication Critical patent/EP2582463A2/fr
Application granted granted Critical
Publication of EP2582463B1 publication Critical patent/EP2582463B1/fr
Not-in-force legal-status Critical Current
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    • 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
    • B03C3/761—Drive-transmitting devices therefor, e.g. insulated shafts
    • 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
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/08—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream

Definitions

  • the invention relates to an electrostatic precipitator for cleaning dust-laden exhaust gases with a plurality of arranged in a housing rows of grounded collecting electrodes and arranged between the rows of collecting electrodes, under negative high voltage, spray electrodes, according to the preamble of claim 1.
  • electrostatic precipitators the dust particles are predominantly negatively ionized by the discharge electrodes, which are under a negative high voltage.
  • the negatively charged dust particles migrate to the positively charged or earthed precipitation electrodes and deposit there in the course of time in the form of a dust layer.
  • Both the spray electrodes, which also form dust layers, as well as the collecting electrodes are periodically, for example by knocking, cleaned and collected the falling dust, for example, in a dust collection hopper and fed in appropriate containers for further disposal or recycling.
  • the cleaning of the collecting electrodes is usually carried out by periodic mechanical shocks using appropriate Abklopforgane, especially hammers or plungers.
  • Abklopforgane especially hammers or plungers.
  • the individual collecting electrodes or several collecting electrodes are combined via a so-called Purzelhammer, which strikes a corresponding anvil, cleaned.
  • Purzelhammer which strikes a corresponding anvil, cleaned.
  • the resulting acceleration replaces the adhering dust layers.
  • the DE 447 137 discloses a shaking device for electrodes of electrical gas cleaning plants, with which the spray and precipitation electrodes of an electrostatic precipitator are made to vibrate to remove the dust adhering to the electrodes.
  • the shaking device has a spring acting under spring action, with which a shaking shaft is set in torsional vibration.
  • a knocking device for an electrostatic precipitator is for example from the DE 1 112 499 , of the DE 1 865 538 U or the DE 101 24 871 C1 known. From the DE 43 22 162 C1 is an electrostatic precipitator with a special drive a horizontally arranged hammer shaft has become known.
  • the DE 28 39 542 A1 describes an electrostatic precipitator with a mechanically operable knocking device, wherein the knocking elements are insulated from each other by disc insulators.
  • the precipitation electrodes of electrostatic precipitators are cleaned by vibration excitation, notching devices, vibrators, brushes or compressed air.
  • Such systems are for example from the DE 38 37 439 A1 , of the DE 103 00 549 A1 or the DE 197 28 369 A1 known.
  • the drive device of the spray electrode knocking device which is separate from the collecting electrode knocking device, is insulated via a rotary or feedthrough insulator in the shaft feed. If possible, the rotary isolator is located outside the gas flow and is partially supplied with scavenging air in order to avoid soiling and resulting arcing up to destruction.
  • a disadvantage of known electrostatic precipitators with precipitation electrode and Sprühelektrodenabtherapiesvorraumen is the high cost, which is caused by the separate drive devices for the two electrode systems and the cost of the isolation of the cleaning device for the Sprühelektroden.
  • the necessary components for the cleaning of the collecting electrodes and the discharge electrodes increase the overall size of the electrostatic precipitator.
  • This disadvantage is characterized still further reinforces that the driving device for the collecting electrode knocking device is arranged correspondingly far away from the drive device for the Sprühelektroden-knocking device in order to safely avoid any flashovers between the systems located at different potentials.
  • the object of the present invention is to provide an above-mentioned electrostatic precipitator with cleaning devices for the precipitation and discharge electrodes, which is constructed as simple, inexpensive and compact as possible and allows efficient cleaning of the collecting electrodes and discharge electrodes.
  • the object according to the invention is achieved by an above-mentioned electrostatic precipitator in which the drive device of the collecting electrode knocking device is coupled to the at least one knocking element of the spraying electrode knocking device via at least one insulated driver.
  • the collecting electrode knocking device is coupled to the spraying electrode knocking device, so that a corresponding drive device is required only for the collecting electrode knocking device.
  • the construction of the coupling of the driving device of the collecting electrode knocking device with the at least one knocking member of the spraying electrode knocking device via at least one insulated driver is relatively easy to implement and has the safety and robustness required for operation.
  • the knocking elements for the spraying electrodes can be actuated via the insulated carrier, so that these also act on the spraying electrodes and the dust covering is thereby thrown off.
  • the drive device for the Sprühelektroden-knocking device can be omitted, since the operation of the Abklopforgane, in particular hammers, the Sprühelektroden-knocking device indirectly through the driving device of the collecting electrode knocking device takes place.
  • the corresponding components which would be required for driving the Abklopforgane the Sprühelektroden-knocking, eliminated, and must be made no measures for their electrical isolation from ground. This can save costs and space requirements.
  • the driving device of the collecting electrode knocking means comprises a drive shaft connected to a drive motor and an associated gearbox. At least one Aböffpforgan the collecting electrode knocking device is arranged at this drive shaft. A corresponding controller switches on the drive motor at certain times, so that the at least one knock-off member is actuated at these times and the collecting electrodes are thereby cleaned.
  • each isolated driver is also arranged on the drive shaft of the collecting electrode knocking device and is entrained by the movement of the drive shaft of the collecting electrode knocking device and on the driver, the at least one Abklopforgan the Sprühelektroden-knocking device is actuated.
  • each isolated carrier arranged thereon is actuated and thus acts on the respective knocking device for the spray electrodes.
  • actuation of the knocking members of the spraying electrode knocking means is always automatic when the collecting electrode knocking means is operated.
  • a separate drive device for the spray electrode knocking device is not required and therefore not their electrical insulation.
  • a position sensor is arranged on the drive shaft of the collecting electrode knocking device, so that the drive shaft and each driver arranged thereon can be brought into a defined starting position after completion of a cleaning process. After the cleaning process so a predetermined position of the drive shaft is achieved.
  • each driver points substantially vertically downwards when it is not needed, so that the driver provides as small a surface for dust as possible and does not need to take on a permanent insulation function. Apart from the undesirable contamination of the driver, the insulating effect of the driver could be prevented by adhering dust, which could lead to rollovers in Abcurisfall.
  • a driving device for example a rotatably mounted roller is arranged at the free end of each driver, which in contact with the at least one Abklopforgan the Sprühelektroden-knocking device is set in rotation.
  • a plurality of collecting electrodes for example, connected to one another via a connecting rail, wherein an anvil is arranged on the composite of a plurality of collecting electrodes for each Abklopforgan the collecting electrode knocking device.
  • a plurality of spray electrodes can at least be connected to one another via at least one frame and a plurality of spray electrode frames, wherein an anvil is arranged on at least one spray electrode frame or at least one connecting rail for each knocking member of the spray electrode knocking device.
  • a space-saving embodiment variant can be achieved in that each discharge electrode frame has a corresponding indentation in the region of the discharge electrode knocking device.
  • the Abklopforgane for the spray electrodes are thus arranged adjacent to the indentation of the Sprühelektroden frame, so that the outer dimensions of an inventively designed electrostatic filter does not differ significantly from the dimensions of an electrostatic precipitator without cleaning device.
  • the spray electrode knocking device is arranged in the lower region of the spray electrode frame and the spray electrode frame is designed to converge in this lower region. Without having to change the housing of such an electrostatic filter, the knocking device for the spray electrodes is located next to the converging lower region of the spray electrode frame.
  • Fig. 1 shows an electrostatic precipitator 1, for cleaning dust-laden exhaust gases A, which supplied from one side of the electrostatic precipitator 1 become.
  • the electrostatic precipitator 1 consists of rows of collecting electrodes 2, which are usually plate-shaped. Between the rows of collecting electrodes 2 are arranged spray electrodes 3, which are at a negative high voltage potential.
  • the collecting electrodes 2 and the discharge electrodes 3 are assigned corresponding knocking devices 4, 5.
  • the knocking devices for the collecting electrodes and the discharge electrodes contain corresponding knocking devices 6 and 7, which tap against corresponding anvils 8 and 9 of the collecting electrodes 2 and / or discharge electrodes 3 and cause the adhering dust covering to be thrown off.
  • the activation of the knocking members 6, 7 of the collecting electrodes 2 and / or spraying electrodes 3 are operated by corresponding drive devices. Depending on the dust load, the cleaning is repeated at different time intervals.
  • corresponding components and drives are required both for the collecting electrode knocking device 5 and for the spraying electrode knocking device 4, which increase the outlay, the costs and the size of the electrostatic precipitator.
  • Fig. 2 shows a schematic view of the internals of an inventive design of an electrostatic precipitator 1, wherein the drive device of the collecting electrode knocking device 5 by a corresponding drive motor 11, a gear 12 and a corresponding drive shaft 13 is formed. At least one Abklopforgan 6, in particular at least one Purzelhammer is mounted on the drive shaft 13 and is rotated upon actuation of the drive shaft 13 and forced to knock an anvil to the collecting electrodes 2, wherein also several collecting electrodes 2 are combined via a connecting rail 18 and cleaned together can. According to the invention, the drive device of the collecting electrode knocking device 5 is now coupled to the knocking device 7 of the spraying electrode knocking device 4, so that the knocking device 7 can be actuated via the drive shaft 13 of the collecting electrode knocking device 5.
  • the drive shaft 13 of the drive device of the collecting electrode knocking device 5 is operated during cleaning and turned the associated Abklopforgan 6 for the collecting electrodes 2 and thrown on the associated anvil 8 for the collecting electrodes 2.
  • an insulated driver 14 is arranged, which actuates the Abklopforgan 7 for the Sprühelektroden-knocking device 4.
  • a roller 15 may be arranged, which rolls on the correspondingly designed Abklopforgan 7.
  • the knock-off element 7 of the spray-electrode knocking device 4 is actuated and thrown against a corresponding anvil 9 on a connecting rail 17 comprising a plurality of spray-electrode frames 19.
  • Fig. 4 shows an embodiment of a frame 16, with which a plurality of discharge electrodes 3 are combined.
  • the frame 16 is provided in the lower region with a recess 19 in which the corresponding drive device for the collecting electrode knocking device 5 can be arranged. This results in an electrostatic filter 1 whose outer dimensions are smaller than those of electrostatic precipitators with conventional cleaning.
  • the present invention is particularly advantageous for smaller electrostatic precipitators for biomass furnaces in the power range 0.3-3MW.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrostatic Separation (AREA)

Claims (9)

  1. Electrofiltre (1) servant à nettoyer des effluents gazeux (A) chargés de poussière, comprenant plusieurs rangées, disposées dans un boîtier, d'électrodes de dépôt (2) mises à la terre, et des électrodes d'émission (3) disposées entre les rangées des électrodes de dépôt (2) et sous haute tension négative, sachant que des systèmes de percussion (4, 5) dotés respectivement d'au moins un organe de percussion (6, 7) pour frapper de manière intermittente la poussière des électrodes de dépôt (2) et des électrodes d'émission (3) sont associés aux électrodes de dépôt (2) et aux électrodes d'émission (3) et que le système de percussion (5) des électrodes de dépôt présente un dispositif d'entraînement pour l'organe de percussion (6) au moins au nombre de un du système de percussion (5) des électrodes de dépôt, sachant que le système de percussion (4) des électrodes d'émission est couplé au dispositif d'entraînement du système de percussion (5) des électrodes de dépôt de sorte que l'organe de percussion (7) au moins au nombre de un du système de percussion (4) des électrodes d'émission peut être actionné par le dispositif d'entraînement du système de percussion (5) des électrodes de dépôt, caractérisé en ce que le dispositif d'entraînement du système de percussion (5) des électrodes de dépôt est couplé par l'intermédiaire d'au moins un entraîneur(14) isolé à l'organe de percussion (7) au moins au nombre de un du système de percussion des électrodes d'émission.
  2. Electrofiltre (1) selon la revendication 1, caractérisé en ce que le dispositif d'entraînement du système de percussion (5) des électrodes de dépôt comprend un arbre d'entraînement (13) relié à un moteur d'entraînement (11) et à un mécanisme de transmission (12) associé, au niveau duquel arbre d'entraînement (13) est disposé l'organe de percussion (6) au moins au nombre de un du système de percussion (5) des électrodes de dépôt.
  3. Electrofiltre (1) selon la revendication 2, caractérisé en ce que chaque entraîneur (14) isolé est disposé au niveau de l'arbre d'entraînement (13) du système de percussion (5) des électrodes de dépôt et peut être entraîné par le mouvement de l'arbre d'entraînement (13) du système de percussion (5) des électrodes de dépôt, et en ce que l'organe de percussion (7) au moins au nombre de un du système de percussion (4) des électrodes d'émission peut être actionné par l'intermédiaire de l'entraîneur (14).
  4. Electrofiltre (1) selon la revendication 3, caractérisé en ce qu'un capteur de position est disposé au niveau de l'arbre d'entraînement (13) du système de percussion (5) des électrodes de dépôt de sorte que l'arbre d'entraînement (13) et chaque entraîneur (14) disposé sur ce dernier peuvent être amenés dans une position de départ définie à l'issue de l'opération de nettoyage.
  5. Electrofiltre (1) selon la revendication 3 ou 4, caractérisé en ce qu'est disposé, au niveau de l'extrémité libre de chaque entraîneur (14), un dispositif d'entraînement, par exemple un galet (15) logé de manière à pouvoir tourner, lequel peut être amené en rotation au contact de l'organe de percussion (7) au moins au nombre de un du système de percussion (4) des électrodes d'émission.
  6. Electrofiltre (1) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que plusieurs électrodes de dépôt (2) sont reliées les unes aux autres par exemple par l'intermédiaire d'un rail de liaison (18), sachant qu'un berceau de sertissage (8) est disposé au niveau du raccordement de plusieurs électrodes de dépôt (2) pour chaque organe de percussion (6) du système de percussion (5) des électrodes de dépôt.
  7. Electrofiltre (1) selon l'une quelconque des revendications 1 à 6, caractérisé en ce que plusieurs électrodes d'émission (3) sont reliées les unes aux autres sur au moins un cadre (16) et sur plusieurs cadres (16) des électrodes d'émission par l'intermédiaire d'au moins un rail de liaison (17), sachant qu'est disposé au niveau au moins d'un cadre (16) des électrodes d'émission ou d'au moins un rail de liaison (17) pour chaque organe de percussion (7) du système de percussion (4) des électrodes d'émission, un berceau de sertissage (9).
  8. Electrofiltre (1) selon la revendication 7, caractérisé en ce que chaque cadre (16) des électrodes d'émission présente dans la zone du système de percussion (4) des électrodes d'émission un retrait (19).
  9. Electrofiltre (1) selon la revendication 8, caractérisé en ce que le système de percussion (4) des électrodes d'émission est disposé dans la zone inférieure du cadre (16) des électrodes d'émission, et en ce que les cadres (16) des électrodes d'émission sont réalisés dans ladite zone inférieure de manière convergente.
EP11743178.3A 2010-06-18 2011-06-17 Électrofiltre pour nettoyer des effluents gazeux chargés de poussière Not-in-force EP2582463B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATGM386/2010U AT13007U1 (de) 2010-06-18 2010-06-18 Elektrofilter zum reinigen staubbeladener abgase und verfahren zum abreinigen eines elektrofilters
PCT/AT2011/000270 WO2011156830A2 (fr) 2010-06-18 2011-06-17 Électrofiltre pour nettoyer des effluents gazeux chargés de poussière

Publications (2)

Publication Number Publication Date
EP2582463A2 EP2582463A2 (fr) 2013-04-24
EP2582463B1 true EP2582463B1 (fr) 2013-09-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11743178.3A Not-in-force EP2582463B1 (fr) 2010-06-18 2011-06-17 Électrofiltre pour nettoyer des effluents gazeux chargés de poussière

Country Status (4)

Country Link
EP (1) EP2582463B1 (fr)
AT (1) AT13007U1 (fr)
CA (1) CA2801786A1 (fr)
WO (1) WO2011156830A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104275244A (zh) * 2014-10-29 2015-01-14 张家港宣化凯波环保科技有限公司 一种电除尘器阴极振打驱动装置
PL3492175T3 (pl) * 2017-12-04 2021-07-05 Exodraft a/s System elektrofiltra zawierający kratę do gromadzenia cząstek

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1600496A (en) * 1923-11-28 1926-09-21 Int Precipitation Co Apparatus for electrical precipitation of suspended material from gases
DE447137C (de) * 1925-03-31 1927-07-18 Siemens Schuckertwerke G M B H Schuettelvorrichtung fuer die Elektroden elektrischer Gasreinigungsanlagen
US1981455A (en) * 1932-03-14 1934-11-20 Int Precipitation Co Electrical precipitator
DE1112499B (de) 1959-11-04 1961-08-10 Appbau Rothemuehle Klopfeinrichtung fuer Elektrofilter und Betriebsverfahren dafuer
DE1865538U (de) 1962-07-06 1963-01-17 Metallgesellschaft Ag Vorrichtung zur abklopfung von niederschlagselektroden im elektrofilter.
GB1149053A (en) * 1965-12-14 1969-04-16 Lodge Cottrell Ltd Improvements in or relating to electro-precipitators
DE2055626A1 (en) * 1970-11-12 1972-05-18 Krupp Gmbh Electrostatic insulator cleaning - using hammers to strike electrodes
US3920085A (en) * 1974-11-11 1975-11-18 Universal Oil Prod Co Swing hammer rapping system for electrostatic precipitator
GB1578378A (en) * 1978-04-26 1980-11-05 Lodge Cottrell Ltd Roller bearing for drop rod rapping
DE2839542C2 (de) * 1978-09-12 1986-08-28 Apparatebau Rothemühle Brandt + Kritzler GmbH, 5963 Wenden Elektroabscheider
GB2047576A (en) * 1979-04-12 1980-12-03 Lodge Cottrell Ltd Electro-precipitation
DE8031177U1 (de) * 1980-11-22 1986-06-19 Walther & Cie AG, 5000 Köln Elektroabscheider
US4769049A (en) * 1987-04-14 1988-09-06 United Mcgill Corporation Side rapping drag hammer apparatus for electrostatic precipitators
DE3837439A1 (de) 1988-11-04 1990-05-10 Sms Schwingungs Messung System Verfahren und vorrichtung zum loesen von staub- bzw. schmutzpartikelchen bei filteranlagen
DK172419B1 (da) * 1992-08-28 1998-06-08 Fls Miljoe As Ophængningsanordning og bankemekanisme for elektroder i et elektrofilter
DE4322162C1 (de) * 1993-07-03 1994-10-06 Metallgesellschaft Ag Vorrichtung zur Übertragung von Drehmomenten auf mindestens eine in einem elektrostatischen Abscheider horizontal angeordnete Hammerwelle
DE19728369A1 (de) 1997-07-03 1999-01-07 Wurz Dieter Reinigung der Abscheideelektroden von Elektrofiltern
DE10124871C1 (de) 2001-05-22 2002-10-10 Hamon Rothemuehle Cottrell Gmb Reinigung von Elektroden eines Elektrofilters
DE10300549A1 (de) 2003-01-09 2004-07-22 Riebel, Ulrich, Prof. Dr.-Ing. Vorrichtung zum Abreinigen von Elektroabscheidern und Verfahren zum Betreiben der Vorrichtung

Also Published As

Publication number Publication date
WO2011156830A8 (fr) 2012-10-11
EP2582463A2 (fr) 2013-04-24
WO2011156830A3 (fr) 2012-05-03
CA2801786A1 (fr) 2011-12-22
AT13007U1 (de) 2013-03-15
WO2011156830A2 (fr) 2011-12-22

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