EP2065094A2 - Electrostatic precipitator - Google Patents

Electrostatic precipitator Download PDF

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Publication number
EP2065094A2
EP2065094A2 EP08405265A EP08405265A EP2065094A2 EP 2065094 A2 EP2065094 A2 EP 2065094A2 EP 08405265 A EP08405265 A EP 08405265A EP 08405265 A EP08405265 A EP 08405265A EP 2065094 A2 EP2065094 A2 EP 2065094A2
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EP
European Patent Office
Prior art keywords
strand
winding drum
electrode
electrostatic precipitator
cleaning
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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
EP08405265A
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German (de)
French (fr)
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EP2065094A3 (en
EP2065094B1 (en
Inventor
Heinz Gschwind
Jörg Meister
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MEISTER UMWELT TECHNOLOGIE AG
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Jörg Meister
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Publication of EP2065094A2 publication Critical patent/EP2065094A2/en
Publication of EP2065094A3 publication Critical patent/EP2065094A3/en
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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
    • B03C3/40—Electrode constructions
    • B03C3/41—Ionising-electrodes
    • 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
    • B03C3/06—Plant or installations having external electricity supply dry type characterised by presence of stationary tube electrodes
    • 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
    • B03C3/743—Cleaning the electrodes by using friction, e.g. by brushes or sliding elements
    • 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
    • B03C3/86—Electrode-carrying means
    • 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
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/04—Ionising electrode being a wire

Definitions

  • the invention relates to an electrostatic precipitator for the separation of dust particles from a gas stream, with at least one attached in a gas flowed through the housing precipitation electrode and with a parallel spaced by her, stretched under tension held spray electrode and periodically acting means for cleaning the collecting electrode.
  • the illustrated electrostatic precipitator 1 has a box-shaped filter housing 2, which encloses numerous, in several rows vertically extending and mutually parallel, tubular collecting electrodes 3 to 7.
  • the gas to be purified flows from an inflow branch 8 to the bottom region 9 of the housing in order to distribute from there to the individual precipitation electrodes 3 to 7, from which it flows out into a head region 10 of the housing to leave this via a discharge port 11.
  • the separation between bottom portion 9 and head portion 10 is effected by a lower and upper horizontal partition wall 12, 13, to which the ends of the collecting electrodes 3 to 7 are tightly secured.
  • the filter housing 2 merges into a shaft 14 delimited by oblique walls, along the bottom region of which extends a screw conveyor 15, through which ash or dust is discharged, which has dropped down from the precipitation tubes 3 to 7 into the shaft 14.
  • each tubular collecting electrode 3 to 7 each extending from a flexible wire spraying electrode 16 to 20, which is releasably connected to the positive pole of a high voltage source of eg 40 kV.
  • a high voltage source eg 40 kV.
  • Fig. 2 Shown pendulum, not shown insulators suspended contact frame 21, the contact webs 22 in a protruding from the respective collecting electrode 3 to 7 each area on the side of the Sprühelektroden 16 to 20 are applied under its own weight.
  • a cable system with attached to a common winding shaft 24 bobbins 25.
  • the corresponding negatively charged precipitation electrodes 3 to 7 are connected to a grounding line 23.
  • Each spraying electrode 16 to 20 extending through an associated collecting electrode 3 to 7 forms a part of a strand 28 that extends longitudinally in each case into an upper and lower winding drum 26, 27 and can be wound onto it.
  • a strand 28 For electrical insulation with respect to the winding drums 26, 27, FIGS this strand 28 an upper and lower, rod-shaped insulating body 29, 30 is provided.
  • the lower winding drums 27 are connected to a rotary drive 32 via a common drive shaft 31 to provide, by winding the strands 28 on the winding drums 27, one each above the collecting electrodes 3 to 7 in this strand 28, e.g. As a brush running cleaning body 33 to pull through the associated tubular collecting electrode 3 to 7 and thus to remove adhering to the inner surface of the material so that it drops down into the shaft 14.
  • a channel-shaped Isolier Sciences 34 is provided for this laterally on the winding drum 27, which is bounded by an extension 35 of a laterally projecting Drummelnabe 36 .
  • a crank arm 37 is provided which extends in the channel direction and thus tangentially away from the drum hub 36 to the outside and at the outer end of an extension pin 39 of the insulating body 30 is attached via a ball joint 40.
  • the hub extension 35 and the crank arm 37 are adapted in their length to the insulating body 30 with its extension pin 39 such that upon pivoting of the insulating body 30 into the Isolier Sciencesement 34 of the spray electrode 16 to 20 facing, a joint connection 41 exhibiting end at a lateral drum opening 42nd arrives in such a way that the strand 28 with its spray electrode 16 to 20 can be safely wound onto the winding drum 27.
  • the after a certain, empirically determined as optimal time program cleaning process begins with the shutdown of the electrical high voltage. Thereafter, the contact frame 21 is pivoted away from the discharge electrodes 3 to 7. Subsequently, the rotary drive 32 of the lower winding drums 27 is turned on. By the rotation of the respective crank arm 37 pivots downward, so that the rod-shaped insulating body 30 sets in its receptacle 34. The winding drum 27 continuously rotates and winds the spraying electrode 16 to 20 until the cleaning body 33 has been completely drawn through the tubular collecting electrode 3 to 7.
  • the respective strand 28 continues via a compensating spring 43 as a steel cable 44, which unwinds from the upper winding drum 26.
  • the upper winding drums 26 of a plurality of spray electrodes 16 to 20 are mounted on a common shaft 45, at the end of a cable drum 46 is attached.
  • a wound on this cable drum 46 produces a fixed end weight 48 under tension and thus holds on the shaft 45, the tension of the Sprühelektroden 16 to 20 even during the cleaning process upright.
  • the tension can be maintained at the spray electrodes 16 to 20 instead of by a weight 48 by a tension spring 50 which is provided in a Schmidtzugseil 51.
  • the Jacobyakseil 51 has an extending from the upper cable drum 46 to the mainspring 50 strand 52 and a wound on a Gegenzugtrommel 53 strand 54.
  • the winding rotation of this Gegenzugtrommel 53 is transmitted via the same shaft 31 as provided for the winding drum 27 by being mounted on the same shaft 31.
  • the only difference is the winding direction, by winding the strand 28 on the winding drum 27 causes a unwinding of the strand 54 of the Schmidtzugtrommel 53 through the described connection on the upper shaft 45.
  • a bias of the tension spring 50 permanently determines the tension on the spray electrodes 16 to 20.
  • Fig.2 illustrates that a constructed according to the described principle electrostatic precipitator 1 can be extended by adding any further combinations of spray and precipitation electrode both longitudinally and transversely arbitrarily, in order to the given for a particular application in each case flow amount of gas to be purified in a simple or cost-effective manner to be able to adapt.

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  • Electrostatic Separation (AREA)

Abstract

The precipitator has precipitation electrodes (3-7) attached in a gas stream housing. A strand comprises spraying electrodes, which are stretchably retained under tensile stress. A periodically acting cleaning unit is provided for cleaning the precipitation electrodes. A cleaning device e.g. brush, is attached in the strand. The strand is connected with a drive system for executing cleaning action of the cleaning device. A part of the strand is wound on a lower winding drum (27) for executing cleaning action of the cleaning device.

Description

Die Erfindung betrifft einen Elektrofilter für die Abscheidung von Staubpartikeln aus einem Gasstrom, mit mindestens einer, in einem vom Gas durchströmten Gehäuse befestigten Niederschlagselektrode und mit einer ihr mit Abstand parallel zugeordneten, unter Zugspannung gestreckt gehaltenen Sprühelektrode sowie mit periodisch wirkenden Mitteln zur Reinigung der Niederschlagselektrode.The invention relates to an electrostatic precipitator for the separation of dust particles from a gas stream, with at least one attached in a gas flowed through the housing precipitation electrode and with a parallel spaced by her, stretched under tension held spray electrode and periodically acting means for cleaning the collecting electrode.

Bei einem durch die EP 0397208 bekannten Elektrofilter dieser Art erfolgt die periodische Reinigung seiner Niederschlagselektroden durch Abschütteln, indem sie durch Elektromagnete in Resonanzschwingungen versetzt werden.At one by the EP 0397208 known electrostatic precipitator of this type is the periodic cleaning of its collecting electrodes by shaking off by being put into resonance vibrations by electromagnets.

Durch die EP 1050341 wird für eine mechanische Reinigung der Innenfläche ihrer rohrförmig ausgeführten Niederschlagselektroden vorgeschlagen, die die Mittenposition des freien Rohrquerschnittes besetzende, d.h. koaxiale Sprühelektrode, durch eine besondere Mechanik radial zur Seite, bis zur Anlage am Rohr der Niederschlagselektrode, weg zu schwenken, so dass der Weg frei wird für ein hinsichtlich seines Antriebs nicht näher beschriebenes, z.B. aus einer eine Bürste bestehendes Reinigungsgerät. Die somit erforderliche, verschiedenartige Mechanik, einerseits für die seitliche Bewegung zur Freigabe des Rohrquerschnittes der Niederschlagselektrode und andererseits für eine Reinigungsbewegung über die Länge der Niederschlagselektrode ist mit entsprechend großem Aufwand verbunden.By the EP 1050341 is proposed for a mechanical cleaning of the inner surface of their tubular precipitating electrodes, the center position of the free pipe cross-section occupying, ie coaxial spray, by a special mechanism radially to the side, until it rests against the pipe of the collecting electrode, away, so that the way free is for an unspecified in terms of its drive, for example, from a brush existing cleaning device. The thus required, different mechanics, on the one hand for the lateral movement to release the pipe cross-section of the collecting electrode and on the other hand for a cleaning movement over the length of the collecting electrode is associated with correspondingly great effort.

Der Erfindung liegt die Aufgabe zugrunde, einen Elektrofilter der genannten Art zu finden, der bei kompakter und kostengünstig realisierbarer Bauweise bei hoher Zuverlässigkeit eine gute Reinigung der Niederschlagselektroden ermöglicht. Die Lösung dieser Aufgabe erfolgt erfindungsgemäß aufgrund der Merkmale des Patentanspruchs 1. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der abhängigen Patentansprüche und der folgenden Beschreibung anhand der Zeichnungen zu entnehmen. Es zeigt:

  • Fig.1 einen Querschnitt durch einen erfindungsgemäßen Elektrofilter in schematischer Darstellung,
  • Fig.2 eine Ansicht der Unterseite des Elektrofilters nach Fig.1 im Bereich seiner Wickeltrommeln,
  • Fig.3 eine schematische Gesamtdarstellung der Mechanik zur Ausführung der Reinigungsbewegung eines eine Sprühelektrode tragenden Stranges eines Elektrofilters nach Fig.1, mit einer durch Strichlinien veranschaulichten Variante für die Aufrechterhaltung einer Zugspannung an solchen Strängen,
  • Fig.4 eine perspektivische Darstellung einer Wickeltrommel des Elektrofilters nach Fig.1 und
  • Fig.5 eine Aufsicht auf die Wickeltrommel nach Fig. 4.
The invention has for its object to find an electrostatic precipitator of the type mentioned, which allows for a compact and cost-realizable construction with high reliability, a good cleaning of the collecting electrodes. The solution of this object is achieved according to the invention due to the features of claim 1. Advantageous embodiments of the invention are subject matter of the dependent claims and the following description with reference to the drawings. It shows:
  • Fig.1 a cross section through an electrostatic filter according to the invention in a schematic representation,
  • Fig.2 a view of the bottom of the electrostatic filter after Fig.1 in the area of his winding drums,
  • Figure 3 a schematic overall view of the mechanism for performing the cleaning movement of a spray electrode carrying strand of an electrostatic filter according to Fig.1 , with a variant illustrated by dashed lines for the maintenance of a tensile stress on such strands,
  • Figure 4 a perspective view of a winding drum of the electrostatic filter after Fig.1 and
  • Figure 5 a view of the winding drum after Fig. 4 ,

Der dargestellte Elektrofilter 1 hat ein kastenförmiges Filtergehäuse 2, das zahlreiche in mehreren Reihen vertikal verlaufende und parallel zueinander angeordnete, rohrförmige Niederschlagselektroden 3 bis 7 umschliesst. Das zu reinigende, beispielsweise als Abgas von einer Anlage zur Holzverbrennung kommende Gas strömt von einem Zuströmstutzen 8 zum Bodenbereich 9 des Gehäuses, um sich von dort aus auf die einzelnen Niederschlagselektroden 3 bis 7 zu verteilen, aus denen es in einen Kopfbereich 10 des Gehäuses ausströmt, um diesen über einen Ausströmstutzen 11 zu verlassen. Die Abtrennung zwischen Bodenbereich 9 und Kopfbereich 10 erfolgt durch eine untere und obere horizontale Trennwand 12, 13, an den die Enden der Niederschlagselektroden 3 bis 7 dicht befestigt sind. Nach unten geht das Filtergehäuse 2 in einen durch schräge Wände begrenzten Schacht 14 über, entlang dessen Bodenbereich sich ein Schneckenförderer 15 erstreckt, durch den Asche oder Staub ausgetragen wird, die aus den Niederschlagsrohren 3 bis 7 nach unten in den Schacht 14 abgefallen ist.The illustrated electrostatic precipitator 1 has a box-shaped filter housing 2, which encloses numerous, in several rows vertically extending and mutually parallel, tubular collecting electrodes 3 to 7. The gas to be purified, for example as exhaust gas coming from a wood combustion plant, flows from an inflow branch 8 to the bottom region 9 of the housing in order to distribute from there to the individual precipitation electrodes 3 to 7, from which it flows out into a head region 10 of the housing to leave this via a discharge port 11. The separation between bottom portion 9 and head portion 10 is effected by a lower and upper horizontal partition wall 12, 13, to which the ends of the collecting electrodes 3 to 7 are tightly secured. Downwards, the filter housing 2 merges into a shaft 14 delimited by oblique walls, along the bottom region of which extends a screw conveyor 15, through which ash or dust is discharged, which has dropped down from the precipitation tubes 3 to 7 into the shaft 14.

Entlang der Achse jeder rohrförmigen Niederschlagselektrode 3 bis 7 erstreckt sich jeweils eine aus einem biegsamen Draht bestehende Sprühelektrode 16 bis 20, die mit dem positiven Pol einer Hochspannungsquelle von z.B. 40 kV lösbar verbunden ist. Hierzu dient ein in Fig. 2 gezeigter, an nicht dargestellten Isolatoren pendelnd aufgehängter Kontaktrahmen 21, dessen Kontaktstege 22 in einem aus der jeweiligen Niederschlagselektrode 3 bis 7 herausragenden Bereich jeweils seitlich an die Sprühelektroden 16 bis 20 unter Eigengewicht angelegt sind. Zur Lösung des elektrischen Kontaktes dient ein Seilzugsystem mit auf einer gemeinsamen Wickelwelle 24 befestigten Wickelrollen 25. Die entsprechend negativ aufgeladenen Niederschlagselektroden 3 bis 7 sind mit einer Erdungsleitung 23 verbunden.Along the axis of each tubular collecting electrode 3 to 7 each extending from a flexible wire spraying electrode 16 to 20, which is releasably connected to the positive pole of a high voltage source of eg 40 kV. This purpose is served in Fig. 2 Shown pendulum, not shown insulators suspended contact frame 21, the contact webs 22 in a protruding from the respective collecting electrode 3 to 7 each area on the side of the Sprühelektroden 16 to 20 are applied under its own weight. To solve the electrical contact is a cable system with attached to a common winding shaft 24 bobbins 25. The corresponding negatively charged precipitation electrodes 3 to 7 are connected to a grounding line 23.

Jede sich durch eine zugehörige Niederschlagselektrode 3 bis 7 erstreckende Sprühelektrode 16 bis 20 bildet einen Teil eines in Längsrichtung zu jeweils einer oberen und unteren Wickeltrommel 26, 27 und auf diese aufwickelbar weiter verlaufenden Stranges 28. Zur elektrischen Isolation gegenüber den Wickeltrommeln 26, 27 sind in diesem Strang 28 ein oberer und unterer, stangenförmiger Isolierkörper 29, 30 vorgesehen.Each spraying electrode 16 to 20 extending through an associated collecting electrode 3 to 7 forms a part of a strand 28 that extends longitudinally in each case into an upper and lower winding drum 26, 27 and can be wound onto it. For electrical insulation with respect to the winding drums 26, 27, FIGS this strand 28 an upper and lower, rod-shaped insulating body 29, 30 is provided.

Die unteren Wickeltrommeln 27 sind über eine gemeinsame Antriebswelle 31 mit einem Drehantrieb 32 verbunden, um durch Aufwickeln der Stränge 28 auf die Wickeltrommeln 27 jeweils einen oberhalb der Niederschlagselektroden 3 bis 7 in diesem Strang 28 vorgesehenen, z.B. als Bürste ausgeführten Reinigungskörper 33, durch die zugehörige rohrförmige Niederschlagselektrode 3 bis 7 hindurch zu ziehen und somit an dessen Innenfläche haften gebliebenes Material zu entfernen, so dass es nach unten in den Schacht 14 abfällt.The lower winding drums 27 are connected to a rotary drive 32 via a common drive shaft 31 to provide, by winding the strands 28 on the winding drums 27, one each above the collecting electrodes 3 to 7 in this strand 28, e.g. As a brush running cleaning body 33 to pull through the associated tubular collecting electrode 3 to 7 and thus to remove adhering to the inner surface of the material so that it drops down into the shaft 14.

Um das Aufwickeln der Stränge 28 auf die Wickeltrommeln 27 trotz des am jeweiligen Strang vorgesehenen, stabförmigen Isolierkörpers 30 zuverlässig zu ermöglichen, ist für diesen seitlich an der Wickeltrommel 27 eine kanalförmige Isolierkörperaufnahme 34 vorgesehen, die von einem Fortsatz 35 einer seitlich überstehenden Trommelnabe 36 begrenzt ist. Ausserdem ist ein Kurbelarm 37 vorgesehen, der sich in Kanalrichtung und damit tangential von der Trommelnabe 36 weg nach aussen erstreckt und an dessen äusseren Ende ein Verlängerungszapfen 39 des Isolierkörpers 30 über ein Kugelgelenk 40 befestigt ist. Dabei sind der Nabenfortsatz 35 und der Kurbelarm 37 in ihrer Länge dem Isolierkörper 30 mit seinem Verlängerungszapfen 39 derart angepasst, dass beim Einschwenken des Isolierkörpers 30 in die Isolierkörperaufnahme 34 sein der Sprühelektrode 16 bis 20 zugekehrtes, eine Gelenkverbindung 41 aufweisendes Ende an einer seitlichen Trommelöffnung 42 derart zur Anlage gelangt, dass der Strang 28 mit seiner Sprühelektrode 16 bis 20 sich sicher auf die Wickeltrommel 27 aufwickeln lässt.In order to allow the winding of the strands 28 on the winding drums 27 despite the provided on each strand, rod-shaped insulating body 30 reliably, a channel-shaped Isolierkörperaufnahme 34 is provided for this laterally on the winding drum 27, which is bounded by an extension 35 of a laterally projecting Drummelnabe 36 , In addition, a crank arm 37 is provided which extends in the channel direction and thus tangentially away from the drum hub 36 to the outside and at the outer end of an extension pin 39 of the insulating body 30 is attached via a ball joint 40. In this case, the hub extension 35 and the crank arm 37 are adapted in their length to the insulating body 30 with its extension pin 39 such that upon pivoting of the insulating body 30 into the Isolierkörperaufnahme 34 of the spray electrode 16 to 20 facing, a joint connection 41 exhibiting end at a lateral drum opening 42nd arrives in such a way that the strand 28 with its spray electrode 16 to 20 can be safely wound onto the winding drum 27.

Der nach einem bestimmten, empirisch als optimal ermittelten Zeitprogramm erfolgende Reinigungsvorgang beginnt mit der Abschaltung der elektrischen Hochspannung. Danach wird der Kontaktrahmen 21 von den Sprühelektroden 3 bis 7 weggeschwenkt. Anschliessend wird der Drehantrieb 32 der unteren Wickeltrommeln 27 eingeschaltet. Durch deren Drehung schwenkt der jeweilige Kurbelarm 37 nach unten, so dass sich der stabförmige Isolierkörper 30 in seine Aufnahme 34 legt. Die Wickeltrommel 27 dreht sich kontinuierlich weiter und wickelt die Sprühelektrode 16 bis 20 so weit auf, bis der Reinigungskörper 33 vollständig durch die rohrförmige Niederschlagselektrode 3 bis 7 gezogen worden ist.The after a certain, empirically determined as optimal time program cleaning process begins with the shutdown of the electrical high voltage. Thereafter, the contact frame 21 is pivoted away from the discharge electrodes 3 to 7. Subsequently, the rotary drive 32 of the lower winding drums 27 is turned on. By the rotation of the respective crank arm 37 pivots downward, so that the rod-shaped insulating body 30 sets in its receptacle 34. The winding drum 27 continuously rotates and winds the spraying electrode 16 to 20 until the cleaning body 33 has been completely drawn through the tubular collecting electrode 3 to 7.

Am oberen, sich an den Reinigungskörper 33 anschliessenden Ende setzt sich der jeweilige Strang 28 über eine Ausgleichsfeder 43 als Stahlseil 44 fort, das sich dabei von der oberen Wickeltrommel 26 abwickelt.At the upper end adjoining the cleaning body 33, the respective strand 28 continues via a compensating spring 43 as a steel cable 44, which unwinds from the upper winding drum 26.

Die oberen Wickeltrommeln 26 von mehreren Sprühelektroden 16 bis 20 sind auf einer gemeinsamen Welle 45 befestigt, an deren Ende eine Seilzugtrommel 46 befestigt ist. Ein auf dieser Seilzugtrommel 46 aufgewickeltes Gegenzugseil 47 wird durch ein endseitig befestigtes Gewicht 48 unter Spannung gehalten und hält somit über die Welle 45 die Zugspannung der Sprühelektroden 16 bis 20 auch während des Reinigungsvorganges aufrecht.The upper winding drums 26 of a plurality of spray electrodes 16 to 20 are mounted on a common shaft 45, at the end of a cable drum 46 is attached. A wound on this cable drum 46 Gegenzugseil 47 is held by a fixed end weight 48 under tension and thus holds on the shaft 45, the tension of the Sprühelektroden 16 to 20 even during the cleaning process upright.

Wie in Fig.3 durch Strichlinien veranschaulicht, kann die Zugspannung an den Sprühelektroden 16 bis 20 anstatt durch ein Gewicht 48 auch durch eine Zugfeder 50 aufrecht erhalten werden, die in einem Gegenzugseil 51 vorgesehen ist. Hierzu hat das Gegenzugseil 51 einen sich von der oberen Seilzugtrommel 46 bis zur Zugfeder 50 erstreckenden Strang 52 und eine auf eine Gegenzugtrommel 53 aufgewickelten Strang 54 ist. Dabei wird die Wickeldrehung dieser Gegenzugtrommel 53 über dieselbe Welle 31 übertragen, wie sie für die Wickeltrommel 27 vorgesehen ist, indem sie auf derselben Welle 31 befestigt ist. Unterschiedlich ist lediglich die Wickelrichtung, indem durch die beschriebene Verbindung über die obere Welle 45 ein Aufwickeln des Stranges 28 auf die Wickeltrommel 27 ein Abwickeln des Stranges 54 von der Gegenzugtrommel 53 bewirkt. Somit bestimmt eine Vorspannung der Zugfeder 50 dauerhaft die Zugspannung an den Sprühelektroden 16 bis 20.As in Figure 3 illustrated by dashed lines, the tension can be maintained at the spray electrodes 16 to 20 instead of by a weight 48 by a tension spring 50 which is provided in a Gegenzugseil 51. For this purpose, the Gegenzugseil 51 has an extending from the upper cable drum 46 to the mainspring 50 strand 52 and a wound on a Gegenzugtrommel 53 strand 54. In this case, the winding rotation of this Gegenzugtrommel 53 is transmitted via the same shaft 31 as provided for the winding drum 27 by being mounted on the same shaft 31. The only difference is the winding direction, by winding the strand 28 on the winding drum 27 causes a unwinding of the strand 54 of the Gegenzugtrommel 53 through the described connection on the upper shaft 45. Thus, a bias of the tension spring 50 permanently determines the tension on the spray electrodes 16 to 20.

Die Darstellung der Fig.2 veranschaulicht, dass ein nach dem beschriebenen Prinzip aufgebauter Elektrofilter 1 durch Hinzufügung weiterer Kombinationen aus Sprühelektrode und Niederschlagselektrode sowohl längs als auch quer beliebig erweitert werden kann, um sich an die für einen bestimmten Anwendungsfall jeweils gegebene Strömungmenge an zu reinigendem Gas auf einfache bzw. kostengünstige Weise anpassen zu können.The presentation of the Fig.2 illustrates that a constructed according to the described principle electrostatic precipitator 1 can be extended by adding any further combinations of spray and precipitation electrode both longitudinally and transversely arbitrarily, in order to the given for a particular application in each case flow amount of gas to be purified in a simple or cost-effective manner to be able to adapt.

Es versteht sich, dass die anhand eines Ausführungsbeispieles mit rohrförmigen Niederschlagselektroden beschriebene Erfindung auch für Elektrofilter mit anders, z.B. plattenförmig ausgeführten Elektroden anwendbar ist, mit entsprechender Anpassung der Querschnittsform der vorzugsweise aufwickelbaren positiven Elektrode an die Form der Niederschlagselektrode und auch entsprechender Anpassung der Querschnittsform einer angekoppelten Reinigungsvorrichtung.It is understood that the invention described with reference to an embodiment with tubular collecting electrodes also for electrostatic precipitators with different, e.g. plate-shaped running electrodes is applicable, with appropriate adaptation of the cross-sectional shape of the preferably wound positive electrode to the shape of the collecting electrode and also corresponding adjustment of the cross-sectional shape of a coupled cleaning device.

Claims (9)

Elektrofilter für die Abscheidung von Staubpartikeln aus einem Gasstrom, mit mindestens einer, in einem vom Gas durchströmten Gehäuse befestigten Niederschlagselektrode (3-7) und mit einer ihr mit Abstand parallel zugeordneten, unter Zugspannung gestreckt gehaltenen Sprühelektrode (16-20) sowie mit periodisch wirkenden Mitteln zur Reinigung der Niederschlagselektrode (3-7), dadurch gekennzeichnet, dass die Sprühelektrode (16-20) Teil eines Stranges (28) ist, in dem eine Reinigungseinrichtung (33) befestigt ist und dieser Strang (28) für die Ausführung einer Reinigungsbewegung mit einem Antriebssystem (27,31,32) verbunden ist.Electrostatic precipitator for separating dust particles from a gas stream, comprising at least one precipitating electrode (3-7) mounted in a housing through which the gas flows, and having a discharge electrode (16-20) stretched parallel thereto at a distance, and periodically acting Means for cleaning the collecting electrode (3-7), characterized in that the spray electrode (16-20) is part of a strand (28) in which a cleaning device (33) is attached and this strand (28) for performing a cleaning movement with a drive system (27,31,32) is connected. Elektrofilter nach Anspruch 1, dadurch gekennzeichnet, dass für die Ausführung einer Reinigungsbewegung der Reinigungseinrichtung (33) zumindest ein Teil des die Sprühelektrode (16-20) aufweisenden Stranges (28) auf eine Wickeltrommel (27) aufwickelbar ist.Electrostatic precipitator according to claim 1, characterized in that for the execution of a cleaning movement of the cleaning device (33) at least a portion of the spray electrode (16-20) having strand (28) on a winding drum (27) can be wound. Elektrofilter nach Anspruch 2, dadurch gekennzeichnet, dass die Sprühelektrode (16-20) zwischen zwei Isolierkörpern (29,30) befestigt ist.Electrostatic precipitator according to Claim 2, characterized in that the spraying electrode (16-20) is fastened between two insulating bodies (29, 30). ) Elektrofilter nach Anspruch 2 und 3, dadurch gekennzeichnet, dass seitlich an der Wickeltrommel (27) eine Isolierkörperaufnahme (34) sowie ein Kurbelarm (37) vorgesehen ist, mit dessen äusseren Ende (38) der Isolierkörpers (30) über ein Gelenk (40) verbunden ist.) According to claim 2 and 3, characterized in that laterally on the winding drum (27) an insulating body (34) and a crank arm (37) is provided, with its outer end (38) of the insulating body (30) via a joint (40 ) connected is. ) Elektrofilter nach Anspruch 4, dadurch gekennzeichnet, dass der Isolierkörper (30) bei in die Isolierkörperaufnahme (34) eingeschwenkter Position mit einem ein Gelenk (41) aufweisenden Ende im Bereich einer seitlichen Trommelöffnung (42) der Wickeltrommel (27) zur Anlage gelangt, wobei das Gelenk (41) den Isolierkörper (30) mit der Sprühelektrode (16-20) verbindet.) Electrostatic filter according to claim 4, characterized in that the insulating body (30) with in the Isolierkörperaufnahme (34) pivoted position with a joint (41) having end in the region of a lateral drum opening (42) of the winding drum (27) comes to rest, wherein the hinge (41) connects the insulating body (30) to the spray electrode (16-20). ) Elektrofilter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der die Sprühelektrode (16-20) aufweisende Strang (28) in einem Seil (44) endet, das auf einer oberen Wickeltrommel (26) auf- und abwickelbar ist, wobei diese Wickeltrommel (26) über eine Welle (45) mit einer Seilzugrolle (46) verbunden ist, deren Seil (47) durch ein Gewicht (48) gespannt ist.Electrostatic precipitator according to one of claims 1 to 5, characterized in that the strand (28) having the discharge electrode (16-20) terminates in a cable (44) which can be wound up and unwound on an upper winding drum (26) this winding drum (26) via a shaft (45) with a cable pulley (46) is connected, the rope (47) by a weight (48) is tensioned. ) Elektrofilter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der die Sprühelektrode (16-20) aufweisende Strang (28) in einem Seil (44) endet, das von einer oberen Wickeltrommel (26) auf- und abwickelbar ist und diese Wickeltrommel (26) über eine Welle (45) mit einer Seilzugrolle (46) verbunden ist, über die ein Strang (52) eines Gegenzugseils (51) verläuft, wobei dieser Strang (52) an einer unter Vorspannung stehenden Zugfeder (50) endet und ein sich an diese anschliessender zweiter Strang (54) von einer Gegenzugtrommel (53) abwickelbar ist, die über eine Welle (31) mit der Wickeltrommel (27) verbunden ist und somit mit dem Drehantrieb (32) gekoppelt ist.) Electrostatic precipitator according to one of claims 1 to 5, characterized in that the spray electrode (16-20) having strand (28) terminates in a cable (44) which is wound up and unwound from an upper winding drum (26) and this Winding drum (26) via a shaft (45) with a cable pulley (46) is connected, via which a strand (52) of a Gegenzugseils (51) extends, said strand (52) ends on a prestressed tension spring (50) and a subsequent second strand (54) of a counter-rotation drum (53) is unwound, which is connected via a shaft (31) with the winding drum (27) and thus with the rotary drive (32) is coupled. ) Elektrofilter nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Niederschlagselektroden (3-7) rohrförmig in mehreren Reihen nebeneinander in einem gemeinsamen, Zu- und Abströmstutzen (8,11) aufweisenden Filtergehäuse (2) angeordnet sind , wobei für die Längsbewegung der Sprühelektroden (16-20) vorgesehene Wickelrollen (26) auf einer gemeinsamen Welle (31,45) befestigt sind.) Electrostatic precipitator according to one of claims 1 to 7, characterized in that the collecting electrodes (3-7) tubular in several rows next to each other in a common, inflow and outflow (8,11) having filter housing (2) are arranged, wherein for the Longitudinal movement of the discharge electrodes (16-20) provided winding rollers (26) on a common shaft (31,45) are attached. Elektrofilter nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass für die Auslösung der Reinigungsbewegung einer als Bürste ausgeführten Reinigungseinrichtung (33) ein mit der unteren Wickelrolle (27) verbundener Drehantrieb (32) vorgesehen ist.Electrostatic precipitator according to one of Claims 1 to 8, characterized in that a rotary drive (32) connected to the lower winding roller (27) is provided for triggering the cleaning movement of a cleaning device (33) designed as a brush.
EP08405265.3A 2007-11-27 2008-10-22 Electrostatic precipitator Active EP2065094B1 (en)

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CH18422007 2007-11-27

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CN105618732A (en) * 2015-12-29 2016-06-01 北京钢研高纳科技股份有限公司 Preparation method of high-temperature alloy powder

Citations (2)

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Publication number Priority date Publication date Assignee Title
EP0397208A2 (en) 1989-05-12 1990-11-14 FRITZ EGGER GESELLSCHAFT m.b.H. Electrostatic precipitator for gas cleaning
EP1050341A2 (en) 1999-05-03 2000-11-08 Paul Forsthuber Tubular electrofilter with movable electrodes

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Publication number Priority date Publication date Assignee Title
US1478798A (en) * 1919-05-27 1923-12-25 Int Precipitation Co Apparatus for electrical treatment of gases
DE490951C (en) * 1924-03-25 1930-04-25 Siemens Schuckertwerke Akt Ges Device for cleaning tubular collecting electrodes of electrical gas cleaning systems with scrapers
US1794074A (en) * 1926-06-19 1931-02-24 Res Corp Of New York Precipitator cleaning device
FR2655570B1 (en) * 1989-12-12 1992-06-19 Commissariat Energie Atomique ELECTROSTATIC FILTER PROVIDED WITH A CLEANING SYSTEM.
DE202007004263U1 (en) * 2007-02-16 2007-07-05 Otto Spanner Gmbh Electric filter for cleaning flue gas, has electrode arrangement comprising spraying electrode and precipitation electrode, where one of electrodes is provided with electrically conducting coating on surface facing filter space

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0397208A2 (en) 1989-05-12 1990-11-14 FRITZ EGGER GESELLSCHAFT m.b.H. Electrostatic precipitator for gas cleaning
EP1050341A2 (en) 1999-05-03 2000-11-08 Paul Forsthuber Tubular electrofilter with movable electrodes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105618732A (en) * 2015-12-29 2016-06-01 北京钢研高纳科技股份有限公司 Preparation method of high-temperature alloy powder
CN105618732B (en) * 2015-12-29 2017-07-25 北京钢研高纳科技股份有限公司 A kind of preparation method of superalloy powder

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DK2065094T3 (en) 2016-11-28
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