EP0014497A1 - Ionising electrode for electrofilter - Google Patents

Ionising electrode for electrofilter Download PDF

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Publication number
EP0014497A1
EP0014497A1 EP80200055A EP80200055A EP0014497A1 EP 0014497 A1 EP0014497 A1 EP 0014497A1 EP 80200055 A EP80200055 A EP 80200055A EP 80200055 A EP80200055 A EP 80200055A EP 0014497 A1 EP0014497 A1 EP 0014497A1
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EP
European Patent Office
Prior art keywords
ionising
spray
tips
tip
point
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.)
Withdrawn
Application number
EP80200055A
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German (de)
French (fr)
Inventor
Egon Dipl.-Ing. Jury
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
Original Assignee
Metallgesellschaft 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 filed Critical Metallgesellschaft AG
Publication of EP0014497A1 publication Critical patent/EP0014497A1/en
Withdrawn legal-status Critical Current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
    • B03C3/40—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
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/10—Ionising electrode has multiple serrated ends or parts

Definitions

  • the invention relates to a spray electrode in the form of elongated strips, wires, tubes or the like with spray tips for cleaning exhaust gases which contain liquid components.
  • the so-called spray electrodes are an essential part of the system. These electrodes have different designs, which are significantly influenced by the respective task that the filter has to fulfill. Among other things, a distinction is made between two main application features, namely the cleaning of dry exhaust gases containing dust and the cleaning of saturated exhaust gases carrying dust and / or liquid drops.
  • the spray electrodes themselves can be divided into variations without and with defined spray points, tips or lines.
  • the spray tips are formed by elements of the spray electrode whose point with the highest charge concentration is arranged lower than parts of the spray tips (DE-AS 12 01 816, DE-AS 11 55 422, DE-AS 20 18 447).
  • these spray electrodes are used in electrostatic precipitators for cleaning exhaust gases containing dust and liquid drops, e.g. due to inertial forces, condensation and electrical forces, to deposits on the spray tips and, moreover, to sheathing the points with the highest charge concentration due to outflowing coating components.
  • the separating effect of the electrostatic filter decreases, so that cleaning is necessary.
  • the object of the invention is to avoid or substantially reduce the inactivation of the spray tips by deposits.
  • each part of the spray tip is lower in the working position is arranged as the point of the spray tip with the highest charge concentration.
  • the spray electrodes can be arranged vertically or horizontally in the electrostatic filters.
  • the shape of the spray tips can be any.
  • the spray tips can also be equipped with several points with the highest charge concentration if all of these points meet the requirements mentioned above.
  • a preferred embodiment consists in that the point of the spray tip with the highest charge concentration is arranged 3 to 100 mm above the upper connection of the spray tip with the band, rotating, tube or the like. This very effectively prevents build-up.
  • Figures 1 to 6 show vertically arranged spray electrodes in various embodiments, wherein in Figs. 1 and 2 the spray electrodes were punched out of strips, in FIG. 3 the spray tips were punched out of an strip and angled, in FIG. 4 the spray tips were wound around a tube in the form of spikes, and in FIG. 5 and 6 the spray tips were welded to a hollow tube. 7 shows horizontally arranged spray electrodes in various embodiments in a longitudinal view.
  • Each part of the spray tip 1 is lower than the point with the highest charge concentration 2. With 3 the upper connection of the spray tip 1 with the tape, wire, tube or the like L is designated.
  • the advantages of the invention are that the formation of lugs at the points of the spray tips with the highest Charge concentration and thereby the inactivation of the spray tips is avoided or significantly reduced. This avoids frequent cleaning of the spray electrodes with a connected shutdown of the electrostatic filter.

Abstract

The invention relates to an ionising electrode in the form of elongate bands, wires, tubes or the like with ionising tips for use in electric filters in which exhaust gases containing liquid components are cleaned. The function of ionising electrodes of this kind is often impaired by the fact that the liquid components of the exhaust gases are deposited on them and under the influence of inertia forces condensation and electrostatic forces, deposits are formed in particular on the ionising tips. As a result, the points of the highest charge concentration are made more or less inactive and the deposition effect of the electric filter is reduced. The invention is based on the object of avoiding depositions on the ionising tips or substantially reducing them. In order to achieve this object it is provided that in the working position of the ionising electrodes (4) every component of the ionising tip (1) is arranged lower than the point (2) of the ionising tip with the highest charge concentration, i.e. that even the highest connecting point (3) between ionising tip (1) and ionising electrode (4) is situated lower than the said point (2). <IMAGE>

Description

Die Erfindung betrifft eine Sprühelektrode in Form von langgestreckten Bändern, Drähten, Rohren oder dergleichen mit Sprühspitzen für die Reinigung von Abgasen, die flüssige Komponenten enthalten.The invention relates to a spray electrode in the form of elongated strips, wires, tubes or the like with spray tips for cleaning exhaust gases which contain liquid components.

Bei Elektrofiltern sind die sogenannten Sprühelektroden ein maßgeblicher Bestandteil der Anlage. Diese Elektroden weisen unterschiedliche Bauformen auf, die durch die jeweilige Aufgabe, die das Filter zu erfüllen hat, wesentlich beeinflußt werden. Neben anderen unterscheidet man zwei Hauptanwendungsmerkmale, nämlich die Reinigung von trockenen, staubhaltigen Abgasen und die Reinigung von Staub- und/oder Flüssigkeitstropfen mitführenden gesättigten Abgasen.In the case of electrostatic filters, the so-called spray electrodes are an essential part of the system. These electrodes have different designs, which are significantly influenced by the respective task that the filter has to fulfill. Among other things, a distinction is made between two main application features, namely the cleaning of dry exhaust gases containing dust and the cleaning of saturated exhaust gases carrying dust and / or liquid drops.

Die Sprühelektroden selbst können unterteilt werden in solche ohne und mit definierten Sprühpunkten, -spitzen oder -linien ausgestattete Variationen. Die Sprühspitzen werden durch Elemente der Sprühelektrode gebildet, deren Punkt mit der höchsten Ladungskonzentration niedriger angeordnet ist als Teile der Sprühspitzen (DE-AS 12 01 816, DE-AS 11 55 422, DE-AS 20 18 447). Beim Einsatz dieser Sprühelektroden in Elektrofiltern zur Reinigung von Staubund Flüssigkeitstropfen enthaltenden Abgasen kommt es, z.B. durch Trägheitskräfte, Kondensation und elektrische Kräfte, zu Ablagerungen auf den Sprühspitzen und darüber hinaus zu Umhüllungen der Punkte mit der höchsten Ladungskonzentration durch abfließende Belagbestandteile. Dadurch nimmt die Abscheidewirkung des Elektrofilters ab, so daß eine Reinigung erforderlich wird.The spray electrodes themselves can be divided into variations without and with defined spray points, tips or lines. The spray tips are formed by elements of the spray electrode whose point with the highest charge concentration is arranged lower than parts of the spray tips (DE-AS 12 01 816, DE-AS 11 55 422, DE-AS 20 18 447). When these spray electrodes are used in electrostatic precipitators for cleaning exhaust gases containing dust and liquid drops, e.g. due to inertial forces, condensation and electrical forces, to deposits on the spray tips and, moreover, to sheathing the points with the highest charge concentration due to outflowing coating components. As a result, the separating effect of the electrostatic filter decreases, so that cleaning is necessary.

Es wurde auch schon vorgeschlagen, die Abschwächung der Emission infolge von Ablagerungen dadurch zu verhindern, daß die Sprühspitzen als Vorsprünge ausgebildet werden, die wenigstens eine Rundung mit einem größeren Radius als 0,5 mm haben (DE-GM 73 14 730). Die Rundung soll als Emissionszone in der Weise arbeiten, daß bei einer Ansatzbildung auf einem Teil der Rundung die Emission von einem danebenliegenden Bereich der Rundung ausgeht. Abgesehen davon, daß- die Rundungen sehr genau eingehalten werden müssen, kann durch diese Rundungen bei Flüssigkeitstropfen enthaltenden Gasen eine Ablagerung auf der gesamten Rundung nur kurzzeitig hinausgezögert werden.It has also been proposed to prevent the weakening of the emission due to deposits by designing the spray tips as projections which have at least one curve with a larger radius than 0.5 mm (DE-GM 73 14 730). The rounding is intended to work as an emission zone in such a way that when an attachment is formed on part of the rounding, the emission originates from an adjacent area of the rounding. Apart from the fact that the roundings have to be observed very precisely, these roundings in the case of gases containing liquid drops can only delay the deposition on the entire rounding for a short time.

Der Erfindung liegt die Aufgabe zugrunde, die Inaktivierung der Sprühspitzen durch Ablagerungen zu vermeiden oder wesentlich zu verringern.The object of the invention is to avoid or substantially reduce the inactivation of the spray tips by deposits.

Die Lösung dieser Aufgabe erfolgt erfindungsgemäß dadurch, daß in Arbeitsstellung jedes Teil der Sprühspitze niedriger angeordnet ist als der Punkt der Sprühspitze mit der höchsten Ladungskonzentration. Die Sprühelektroden können vertikal oder horizontal in den Elektrofiltern angeordnet sein. Die Form der Sprühspitzen kann beliebig sein. Die Sprühspitzen können auch mit mehreren Punkten mit höchster Ladungskonzentration ausgestattet sein, wenn alle diese Punkte den oben genannten Forderungen entsprechen.This object is achieved according to the invention in that each part of the spray tip is lower in the working position is arranged as the point of the spray tip with the highest charge concentration. The spray electrodes can be arranged vertically or horizontally in the electrostatic filters. The shape of the spray tips can be any. The spray tips can also be equipped with several points with the highest charge concentration if all of these points meet the requirements mentioned above.

Eine vorzugsweise Ausgestaltung besteht darin, daß der Punkt der Sprühspitze mit der höchsten Ladungskonzentration 3 bis 100 mm über der oberen Verbindung der Sprühspitze mit dem Band, Dreht, Rohr oder dergleichen angeordnet ist. Dadurch wird eine Ansatzbildung sehr gut verhindert.A preferred embodiment consists in that the point of the spray tip with the highest charge concentration is arranged 3 to 100 mm above the upper connection of the spray tip with the band, rotating, tube or the like. This very effectively prevents build-up.

Die Erfindung wird an Hand der Figuren näher und beispielsweise erläutert.The invention is explained in more detail with reference to the figures and, for example, explained.

Figuren 1 bis 6 zeigen vertikal angeordnete Sprühelektroden in verschiedenen Ausführungsformen, wobei in den Figg. 1 und 2 die Sprühelektroden aus Bändern gestanzt wurden, in Fig. 3 die Sprühspitzen aus einem Band gestanzt und abgewinkelt wurden, in Fig. 4 die Sprühspitzen in Form von Dornen um ein Rohr gewickelt wurden, und in Figg. 5 und 6 die Sprühspitzen an ein Hohlrohr geschweißt wurden. In der Figur 7 sind horizontal angeordnete Sprühelektroden in verschiedenen Ausführungsformen in Längsansicht dargestellt.Figures 1 to 6 show vertically arranged spray electrodes in various embodiments, wherein in Figs. 1 and 2 the spray electrodes were punched out of strips, in FIG. 3 the spray tips were punched out of an strip and angled, in FIG. 4 the spray tips were wound around a tube in the form of spikes, and in FIG. 5 and 6 the spray tips were welded to a hollow tube. 7 shows horizontally arranged spray electrodes in various embodiments in a longitudinal view.

Jedes Teil der Sprühspitze 1 liegt tiefer als der Punkt mit der höchsten Ladungskonzentration 2. Mit 3 ist die obere Verbindung der Sprühspitze 1 mit dem Band, Draht, Rohr oder dergleichen L bezeichnet.Each part of the spray tip 1 is lower than the point with the highest charge concentration 2. With 3 the upper connection of the spray tip 1 with the tape, wire, tube or the like L is designated.

Die Vorteile der Erfindung bestehen darin, daß Ansatzbildungen an den Punkten der Sprühspitzen mit höchster Ladungskonzentration und dadurch die Inaktivierung der Sprühspitzen vermieden oder wesentlich verringert wird.. Dadurch wird eine öftere Reinigung der Sprühelektroden mit einer verbundenen Abschaltung des Elektrofilters vermieden.The advantages of the invention are that the formation of lugs at the points of the spray tips with the highest Charge concentration and thereby the inactivation of the spray tips is avoided or significantly reduced. This avoids frequent cleaning of the spray electrodes with a connected shutdown of the electrostatic filter.

Claims (2)

1. Sprühelektrode in Form von langgestreckten Bändern, Drähten, Rohren oder dergleichen mit Sprühspitzen für die Reinigung von Abgasen, die flüssige Komponenten enthalten, dadurch gekennzeichnet, daß in Arbeitsstellung jedes Teil der Sprühspitze niedriger angeordnet ist als der Punkt der Sprühspitze mit der höchsten Ladungskonzentrationo1. Spray electrode in the form of elongated strips, wires, tubes or the like with spray tips for cleaning exhaust gases containing liquid components, characterized in that in the working position each part of the spray tip is arranged lower than the point of the spray tip with the highest charge concentration 2. Sprühelektrode nach Anspruch 1, dadurch gekennzeichnet, daß der Punkt der Sprühspitze mit der höchsten Ladungskonzentration 3 bis 100 mm über der oberen Verbindung der Sprühspitze mit dem Band, Draht, Rohr oder dergleichen angeordnet isto2. Spray electrode according to claim 1, characterized in that the point of the spray tip with the highest charge concentration is 3 to 100 mm above the upper connection of the spray tip with the tape, wire, tube or the like iso
EP80200055A 1979-02-03 1980-01-22 Ionising electrode for electrofilter Withdrawn EP0014497A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2904153 1979-02-03
DE19792904153 DE2904153A1 (en) 1979-02-03 1979-02-03 SPRAY ELECTRODE FOR ELECTRIC FILTER

Publications (1)

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EP0014497A1 true EP0014497A1 (en) 1980-08-20

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EP80200055A Withdrawn EP0014497A1 (en) 1979-02-03 1980-01-22 Ionising electrode for electrofilter

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DE (1) DE2904153A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT13607U1 (en) * 2012-10-22 2014-04-15 Zakritoe Akcionernoe Obschestvo Kondor Eko Spray electrode for an electrostatic precipitator
NL2011012C2 (en) * 2013-06-19 2014-12-22 Virus Free Air B V Gas flow cleaning device.
CN105057103A (en) * 2015-07-15 2015-11-18 艾尼科环保技术(安徽)有限公司 Elliptical tube elongated needle discharge cathode for electrostatic precipitator
DE202017100688U1 (en) 2017-02-09 2017-02-24 Ambros Schmelzer & Sohn Gmbh & Co. Kg Electrostatic separator for separating mass particles in an air and / or gas stream
DE202017100686U1 (en) 2017-02-09 2017-03-02 Ambros Schmelzer & Sohn Gmbh & Co. Kg Spray electrode for electrostatic precipitator
DE102017114638A1 (en) * 2017-06-30 2019-01-03 Das Environmental Expert Gmbh Electrostatic precipitator and method for the electrostatic precipitation of substances from an exhaust gas stream
WO2021250382A1 (en) * 2020-06-11 2021-12-16 Edwards Limited Electrostatic precipitator
CN116251677A (en) * 2022-09-05 2023-06-13 苏州科技大学 Atomization corona rotary part of atomization corona oil smoke waste gas purification device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE452955B (en) * 1984-11-05 1988-01-04 Flaekt Ab Rigid emission electrode
SE520901C2 (en) 2001-11-30 2003-09-09 Bact System Ab emission electrode
DE102020125579A1 (en) 2020-09-30 2022-03-31 Woco Gmbh & Co. Kg Electrostatic separator, pipe section and plant producing airborne dust

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1980521A (en) * 1931-01-19 1934-11-13 Int Precipitation Co Method for supplying and cleaning gas by electrical action
DE909982C (en) * 1935-10-09 1954-04-26 Koppers Co Inc Device for stabilizing coal distillation gases u. Like. By electrical discharges

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1980521A (en) * 1931-01-19 1934-11-13 Int Precipitation Co Method for supplying and cleaning gas by electrical action
DE909982C (en) * 1935-10-09 1954-04-26 Koppers Co Inc Device for stabilizing coal distillation gases u. Like. By electrical discharges

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT13607U1 (en) * 2012-10-22 2014-04-15 Zakritoe Akcionernoe Obschestvo Kondor Eko Spray electrode for an electrostatic precipitator
NL2011012C2 (en) * 2013-06-19 2014-12-22 Virus Free Air B V Gas flow cleaning device.
WO2014204310A1 (en) * 2013-06-19 2014-12-24 Virus Free Air B.V. Gas flow cleaning device
CN105057103A (en) * 2015-07-15 2015-11-18 艾尼科环保技术(安徽)有限公司 Elliptical tube elongated needle discharge cathode for electrostatic precipitator
DE202017100688U1 (en) 2017-02-09 2017-02-24 Ambros Schmelzer & Sohn Gmbh & Co. Kg Electrostatic separator for separating mass particles in an air and / or gas stream
DE202017100686U1 (en) 2017-02-09 2017-03-02 Ambros Schmelzer & Sohn Gmbh & Co. Kg Spray electrode for electrostatic precipitator
DE102017114638A1 (en) * 2017-06-30 2019-01-03 Das Environmental Expert Gmbh Electrostatic precipitator and method for the electrostatic precipitation of substances from an exhaust gas stream
DE102017114638B4 (en) * 2017-06-30 2019-11-21 Das Environmental Expert Gmbh Electrostatic precipitator and method for the electrostatic precipitation of substances from an exhaust gas stream
US10926272B2 (en) 2017-06-30 2021-02-23 Das Environmental Expert Gmbh Electrostatic precipitator and method for electrostatic precipitation of materials out of an exhaust gas flow
WO2021250382A1 (en) * 2020-06-11 2021-12-16 Edwards Limited Electrostatic precipitator
CN116251677A (en) * 2022-09-05 2023-06-13 苏州科技大学 Atomization corona rotary part of atomization corona oil smoke waste gas purification device
CN116251677B (en) * 2022-09-05 2023-09-15 苏州科技大学 Atomization corona rotary part of atomization corona oil smoke waste gas purification device

Also Published As

Publication number Publication date
DE2904153A1 (en) 1980-08-07

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Inventor name: JURY, EGON, DIPL.-ING.