WO2015197771A1 - Electrodepositor for the electrostatic deposition of particles from a gas stream - Google Patents

Electrodepositor for the electrostatic deposition of particles from a gas stream Download PDF

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Publication number
WO2015197771A1
WO2015197771A1 PCT/EP2015/064402 EP2015064402W WO2015197771A1 WO 2015197771 A1 WO2015197771 A1 WO 2015197771A1 EP 2015064402 W EP2015064402 W EP 2015064402W WO 2015197771 A1 WO2015197771 A1 WO 2015197771A1
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WO
WIPO (PCT)
Prior art keywords
case
housing
electrical separator
separator according
carrying device
Prior art date
Application number
PCT/EP2015/064402
Other languages
German (de)
French (fr)
Inventor
Klaus ZEHACZEK
Hans Peter BRUDER
Original Assignee
Szs Engineering Gmbh
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 Szs Engineering Gmbh filed Critical Szs Engineering Gmbh
Publication of WO2015197771A1 publication Critical patent/WO2015197771A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—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
    • B03C3/02—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
    • B03C3/40—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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/49—Collecting-electrodes tubular
    • 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
    • B03C3/70—Applications of electricity supply techniques insulating in electric separators
    • 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
    • B03C3/78—Cleaning the electrodes by washing
    • 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

  • Electrostatic precipitator for electrostatic precipitation of particles from a
  • the invention relates to an electrostatic precipitator for the electrostatic deposition of particles, in particular dust particles and / or aerosols, from a
  • An electrostatic precipitator flowing gas stream comprising a housing and at least one housed in the housing spray electrode and at least one housed in the housing precipitation electrode, wherein the spray electrode is held by a support means in the housing and wherein the support means relative to the at least one collecting electrode and the housing via at least one insulator is electrically isolated.
  • Electrostatic precipitators of the type mentioned are also referred to as electrostatic precipitators, although it is not a filter in the classical sense.
  • Another name is Electric Gas Purification System (EGR). The operation consists in the deflection of charged particles in an electric field. in the
  • Electrostatic precipitator the particles to be deposited are first charged and then deflected by a generated electric field and deposited, while the loaded with the particles gas stream is passed through the electrostatic precipitator.
  • the gas stream leaving the electrostatic precipitator is therefore largely freed from particles.
  • the separated particles are removed separately.
  • the particles can be understood to mean both solid and liquid particles.
  • the particles are dust particles and / or aerosols.
  • the electrostatic precipitator has a series of discharge electrodes which release electrical charge in the form of electrons. This charge is absorbed by the particles flowing with the gas stream through the electrostatic precipitator. The correspondingly negatively charged particles migrate transversely to the flow direction of the gas in the direction of the spray electrodes associated Collecting electrodes. The particles remain on the charge due to their charge
  • Precipitating electrodes adhere until the particles are removed. This happens at regular intervals, for example mechanically, for example by tapping the particles.
  • a liquid e.g. Water, sprayed
  • a wet electrostatic precipitator is called a wet electrostatic precipitator.
  • the rectified high voltage necessary for particle separation is generated, for example, by a voltage conversion system which increases the mains voltage to approximately 80 kV to 110 kV (open circuit) and rectifies it on the high-voltage side.
  • Electrostatic precipitators differ in terms of the gas-filled filter gate in which the electric field is generated.
  • the filter alley can be formed by collecting electrodes in the form of tubes or flat plates. In the respective filter alley there is at least one each
  • a spray electrode which takes the form of a helix, a wire, a spike, a
  • the spray electrodes are in the housing of the electrostatic precipitator of a
  • Carrying device held This is under high voltage and must therefore be on the one hand electrically isolated from the housing and on the other hand against the collecting electrodes. Therefore, the carrying device in the housing of the
  • the isolation of the discharge electrodes with respect to the collecting electrodes requires reasons of electrical insulation and for reasons of safe load transfer from the support to the housing on the one hand quite large insulators and also a lot of space for the installation of the insulators.
  • the insulators are in fact installed in an insulating housing and heated or air-flushed there to a deposition of particles and / or moisture on the insulators prevent. Corresponding deposits can lead to flashovers or breakdowns of the electrical voltage.
  • the insulators are porcelain insulators with a central flange at the thickest point of the insulator flange, with which the insulator is supported against the housing.
  • the present invention is therefore based on the object, the above-mentioned and previously described in detail electrical precipitator in such a way and further, that space can be saved. If the insulators as well as the isolation housings can be made smaller, considerable costs can be saved.
  • the invention has recognized that it is possible to dispense with the previously used porcelain insulators in favor of hollow plastic composite insulators, thereby saving space and thus ultimately costs.
  • the space savings result despite the fact that the hollow plastic composite insulator, as the name implies, is hollow inside.
  • a hollow plastic composite insulator but in particular height can be saved.
  • a very good load transfer can be achieved, so that, if necessary, less insulators are needed, which leads to a further saving of installation space and costs. This may in particular also be due to the fact that the
  • Plastic composite material is made. This may be, for example, a laminate composite with at least one plastic layer. However, laminate layers with increased specific electrical conductivity can be problematic with regard to the insulation effect. This optionally restricts the choice of laminate layers. It can be in the plastic composite but for example, a plastic fiber composite, such as in the form of a fiber-reinforced component Plastic, which is due to higher rigidity and / or strength of the plastic
  • Hollow plastic composite insulator will typically be preferred. In principle, different fibers and plastics come into question, in particular those with a low specific electrical conductivity. As plastic are
  • thermosets such as synthetic resin, in particular epoxy resin suitable.
  • other plastics such as thermoplastics or silicone may also be used.
  • glass fibers are used as fibers
  • Hollow plastic composite insulator may be formed from one or more composite materials.
  • the hollow plastic composite insulator has a tubular portion, if necessary, a hollow plastic tube, and at the ends of the tubular portion flanges for connection to the housing on the one hand and the support means on the other.
  • the support means is therefore spaced from the housing along the length of the tubular portion, so that charge overflow can be prevented.
  • the flanges also ensure a high and secure load transfer, so that a stable and permanent connection can be provided.
  • the tubular portion may have a constant cross section and / or circumference for reasons of stability. Alternatively or additionally, it is expedient if the tubular section is formed at least partially from at least one plastic composite material, as has been described above. Then, a stable and rigid hollow plastic composite insulator can be provided.
  • the tubular portion or the plastic tube may be at least partially formed of a glass fiber reinforced plastic.
  • thermoset such as a Resin
  • the tubular portion may be on the outside, so circumferentially outwardly directed, at least partially a polymeric umbrella cover or a
  • the silicone may also be fiber-reinforced, in particular glass fiber reinforced, to improve the mechanical properties.
  • the flanges may be formed of metal.
  • a gain in stability can be achieved.
  • the use of an electrically conductive material is to be tolerated insofar as that too
  • tethered housing and the carrying device connected thereto preferably can be made of metal. It is particularly useful in this context from an electrical and mechanical point of view, if the flanges are made of aluminum. Flanges, which are at least partially formed of an electrically non-conductive material, are also conceivable and better suited for electrical insulation.
  • the material may be a plastic, in particular fiber-reinforced, for example. It is also expedient if a previously mentioned plastic and / or aforementioned fibers are used.
  • the flanges may additionally or alternatively be glued to the tubular portion. This allows a cost-effective and stable connection can be made, which also has a long shelf life.
  • a support structure of the support means may be performed. This is thus insulated to the outside and can be supported for example on an upper flange of the hollow plastic composite insulator.
  • the support structure in the radial direction by at least 50 mm from the tubular portion of the
  • the inner diameter of the hollow plastic composite insulator can be between 250 mm and 750 mm. Be particularly useful in this context, an internal diameter between 400 mm and 600 mm proved.
  • the carrying device may have at least one upper
  • the Sprühelektroden can be kept in the housing. It is particularly preferred for reasons of cost, if only a support frame is provided. For a stable and secure storage of the support device, this can preferably be held by up to four hollow plastic composite insulators. Cost-effective and yet durable and durable, it may be possible to use only up to two hollow plastic composite insulators.
  • the advantages of using hollow plastic composite insulators come into play in particular if the discharge electrodes are in the form of wires and / or the collecting electrodes are tubes. This represents a compact design, the compactness of which can be further increased by the hollow plastic composite insulators. It is particularly preferred because space-saving, if the collecting electrodes are formed as a tube bundle.
  • the electrostatic precipitator may be configured as a wet electrostatic precipitator. Then can be dispensed with expensive mechanical cleaning devices for removing the deposited particles. It can rather be provided space-saving filter cleaning.
  • the invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment. In the drawing shows
  • Fig. 2 shows the wet electrostatic precipitator of Fig. 1 in a horizontal
  • Fig. 3 is an insulation housing of the wet electrostatic precipitator of Fig. 1 in a vertical sectional view
  • Fig. 4 shows the hollow plastic composite insulator of the insulation housing of FIG. 3 in a partially vertical sectional view.
  • an electrostatic precipitator 1 is shown in the form of a wet electrostatic precipitator.
  • the electrostatic precipitator 1 comprises a housing 2 with an upper gas inlet nozzle 3 and a lower gas outlet nozzle 4. Between the gas inlet nozzle 3 and the gas outlet nozzle 4, a tube bundle 5 of tubular collecting electrodes 6 is provided, in particular suspended in the housing 2.
  • the tube bundle 5 shown in a horizontal section in FIG. 2 is provided so that the gas flow entering the housing 2 flows through the tube bundle 5 before the gas flow leaves the housing 2 again.
  • Precipitation electrodes 6 are electrically grounded and have substantially centrally through the collecting electrodes 6 of the tube bundle 5 extending
  • Spray electrodes 7 in the form of wires.
  • the spray electrodes 7 are fixed to a support device 8, which in the illustrated and so far preferred electrostatic precipitator 1 above and below the tube bundle 5 each one
  • Support frame 9 has. On the support frame 9 are adjustable guide frame held on which the spray electrodes 7 are mounted. About the guide frame, the spray electrodes 7 can be centrally to the collecting electrodes 6 of the
  • Tube bundle 5 are aligned.
  • the discharge electrodes 7 are electrically insulated from the collecting electrodes 6.
  • the support frames 8 are supported by support structures 10 in the form of support tubes on hollow plastic composite insulators 11, in each case opposite an upper flange 12
  • Hollow plastic composite insulator 11 is supported in turn against the housing 2, with a lower flange 13.
  • the housing 2 with a lower flange 13.
  • Hollow plastic composite insulator 11 disposed in an insulating housing 14 and accordingly sealed off from the environment.
  • the designated in Fig. 1 with 14 insulating housing 14 is shown in Fig. 3 enlarged. Not shown is that the insulating housing 14 a
  • the air enters the insulation housing 14 via the nozzles.
  • a Gezzauseinnenflansch 15 is provided, on which the hollow plastic composite insulator 11 is seated and with which the lower flange 13 of the hollow plastic composite insulator 11 is screwed.
  • a cover member 16 is screwed, from the center of a support structure 10 in the form of a support tube hangs down.
  • the support structure 10 accordingly runs centrally from top to bottom through the hollow plastic insulator 11 and through the
  • the upper end of the insulating housing 14 is closed by a cover 17.
  • the support structure 10 is electrically connected to the power supply, in particular a high-voltage rectifier device.
  • the corresponding insulating housing 14 together with the connection to the
  • a hollow plastic composite insulator 11 of the same type is provided in each case, as shown in detail in FIG. 4.
  • the supporting structure is formed by a tubular portion 18 of a glass fiber reinforced thermosets, which is glued with its two longitudinal ends in each case with a flange 12,13.
  • the flanges 12,13 exist in the illustrated and so far preferred
  • Hollow plastic composite insulator 11 made of aluminum.
  • the flanges 12,13 also have circumferentially several holes to screw the hollow plastic composite insulator 11 with the housing 2 and with the support means 8.
  • This air gap 20 is annular and has a width of at least 100 mm.
  • the inner diameter of the tubular portion 18 has at least 250 mm, in particular about 300 mm.
  • the hollow plastic composite insulator 11 is at least 500 mm, in particular well 600 mm, high.
  • the insulation housing 14 is preferably between 700 mm and 1100 mm, in particular about 900 mm, high. The radial distance between the
  • Insulation housing 14 is at least 100 mm, wherein the diameter of the insulating housing 14 is at least 500 mm, preferably at most 750 mm, in particular between 600 mm and 650 mm.
  • the width of the Umbrellas 20 in the radial direction between 25 mm and 75 mm, in particular between 35 mm and 55 mm.
  • the bolt circle of the flanges 12,13 has a diameter between 300 mm and 400 mm.
  • the holes 22 also have diameters of 12 mm to 16 mm, in particular about 14 mm.

Landscapes

  • Electrostatic Separation (AREA)

Abstract

An electrodepositor (1) for the electrostatic deposition of particles, in particular dust particles and/or aerosols, from a gas stream flowing through the electrodepositor (1) is described and shown, comprising a housing (2) and at least one discharge electrode (7) accommodated in the housing (2) and at least one precipitation electrode (6) accommodated in the housing (2), wherein the discharge electrode (7) is held by way of a carrying device (8) in the housing (2) and wherein the carrying device (8) is electrically insulated with respect to the at least one precipitation electrode (6) and the housing (2) by way of at least one insulator. In order to save installation space, and consequently costs, it is provided that the at least one insulator is a hollow plastic composite insulator (11).

Description

Elektroabscheider zur elektrostatischen Abscheidung von Partikeln aus einem  Electrostatic precipitator for electrostatic precipitation of particles from a
Gasstrom  gas flow
Die Erfindung betrifft einen Elektroabscheider zur elektrostatischen Abscheidung von Partikeln, insbesondere Staubteilchen und/oder Aerosolen, aus einem den The invention relates to an electrostatic precipitator for the electrostatic deposition of particles, in particular dust particles and / or aerosols, from a
Elektroabscheider durchströmenden Gasstrom, mit einem Gehäuse und wenigstens einer in dem Gehäuse aufgenommenen Sprühelektrode und wenigstens einer in dem Gehäuse aufgenommenen Niederschlagselektrode, wobei die Sprühelektrode über eine Trageinrichtung im Gehäuse gehalten ist und wobei die Trageinrichtung gegenüber der wenigstens einen Niederschlagselektrode und dem Gehäuse über wenigstens einen Isolator elektrisch isoliert ist. An electrostatic precipitator flowing gas stream, comprising a housing and at least one housed in the housing spray electrode and at least one housed in the housing precipitation electrode, wherein the spray electrode is held by a support means in the housing and wherein the support means relative to the at least one collecting electrode and the housing via at least one insulator is electrically isolated.
Elektroabscheider der genannten Art werden auch als Elektrofilter bezeichnet, obwohl es sich nicht um einen Filter im klassischen Sinne handelt. Eine weitere Bezeichnung ist elektrische Gasreinigungsanlage (EGR). Die Funktionsweise besteht in der Ablenkung von geladenen Teilchen in einem elektrischen Feld. Im Electrostatic precipitators of the type mentioned are also referred to as electrostatic precipitators, although it is not a filter in the classical sense. Another name is Electric Gas Purification System (EGR). The operation consists in the deflection of charged particles in an electric field. in the
Elektroabscheider werden die abzuscheidenden Teilchen zunächst aufgeladen und sodann durch ein erzeugtes elektrisches Feld abgelenkt und abgeschieden, während der mit den Teilchen beladene Gasstrom durch den Elektroabscheider geführt wird. Der den Elektroabscheider verlassende Gasstrom ist daher weitestgehend von Partikeln befreit. Die abgeschiedenen Partikel werden gesondert abgeführt. Unter den Partikeln können sowohl feste als auch flüssige Partikel verstanden werden.  Electrostatic precipitator, the particles to be deposited are first charged and then deflected by a generated electric field and deposited, while the loaded with the particles gas stream is passed through the electrostatic precipitator. The gas stream leaving the electrostatic precipitator is therefore largely freed from particles. The separated particles are removed separately. The particles can be understood to mean both solid and liquid particles.
Insbesondere handelt es sich bei den Partikeln um Staubpartikel und/oder Aerosole. In particular, the particles are dust particles and / or aerosols.
Der Elektroabscheider weist eine Reihe von Sprühelektroden auf, die elektrische Ladung in Form von Elektronen freisetzen. Diese Ladung wird von den mit dem Gasstrom durch den Elektroabscheider strömenden Partikeln aufgenommen. Die entsprechend negativ aufgeladenen Partikel wandern quer zur Strömungsrichtung des Gases in Richtung der den Sprühelektroden zugeordneten Niederschlagselektroden. Die Partikel bleiben aufgrund ihrer Ladung an den The electrostatic precipitator has a series of discharge electrodes which release electrical charge in the form of electrons. This charge is absorbed by the particles flowing with the gas stream through the electrostatic precipitator. The correspondingly negatively charged particles migrate transversely to the flow direction of the gas in the direction of the spray electrodes associated Collecting electrodes. The particles remain on the charge due to their charge
Niederschlagselektroden haften, bis die Partikel abgeführt werden. Dies geschieht in regelmäßigen Abständen, beispielsweise mechanisch, etwa durch Abklopfen der Partikel. Werden die Niederschlagselektroden zur Reinigung mit einer Flüssigkeit, z.B. Wasser, besprüht, spricht man von einem Nass-Elektroabscheider. Precipitating electrodes adhere until the particles are removed. This happens at regular intervals, for example mechanically, for example by tapping the particles. When the collecting electrodes are cleaned with a liquid, e.g. Water, sprayed, is called a wet electrostatic precipitator.
Die für die Partikelabscheidung notwendige gleichgerichtete Hochspannung wird beispielsweise von einer Spannungsumsetzanlage erzeugt, welche die Netzspannung auf etwa 80 kV bis 110 kV (Leerlauf) erhöht und auf der Hochspannungsseite gleichrichtet. Elektroabscheider unterscheiden sich hinsichtlich der vom Gas passierten Filtergasse, in der das elektrische Feld erzeugt wird. Die Filtergasse kann durch Niederschlagselektroden in Form von Rohren oder ebenen Platten gebildet werden. In der jeweiligen Filtergasse befindet sich jeweils wenigstens eine The rectified high voltage necessary for particle separation is generated, for example, by a voltage conversion system which increases the mains voltage to approximately 80 kV to 110 kV (open circuit) and rectifies it on the high-voltage side. Electrostatic precipitators differ in terms of the gas-filled filter gate in which the electric field is generated. The filter alley can be formed by collecting electrodes in the form of tubes or flat plates. In the respective filter alley there is at least one each
Sprühelektrode, welche die Form einer Helix, eines Drahts, eines Dorns, eines A spray electrode which takes the form of a helix, a wire, a spike, a
Sägezahns oder einer Welle aufweisen kann. Als Betriebsspannung kommt Sawtooth or a shaft may have. As operating voltage comes
Gleichspannung, Wechselspannung, gepulste Gleichspannung oder pulsüberlagerte Gleichspannung in Frage.  DC voltage, AC voltage, pulsed DC voltage or pulsed DC voltage in question.
Die Sprühelektroden sind im Gehäuse des Elektroabscheiders von einer The spray electrodes are in the housing of the electrostatic precipitator of a
Trageinrichtung gehalten. Diese steht unter Hochspannung und muss daher einerseits gegenüber dem Gehäuse und andererseits gegenüber den Niederschlagselektroden elektrisch isoliert sein. Deshalb ist die Trageinrichtung im Gehäuse des Carrying device held. This is under high voltage and must therefore be on the one hand electrically isolated from the housing and on the other hand against the collecting electrodes. Therefore, the carrying device in the housing of the
Elektroabscheiders über Isolatoren abgehängt, die sich auf der isolierten Seite gegenüber dem Gehäuse abstützen. Electric precipitator suspended over insulators, which are supported on the insulated side opposite the housing.
Die Isolation der Sprühelektroden gegenüber den Niederschlagselektroden verlangt aus Gründen der elektrischen Isolation und aus Gründen der sicheren Lastabtragung von der Trageinrichtung an das Gehäuse einerseits recht große Isolatoren und zudem einen großen Platzbedarf für den Einbau der Isolatoren. Die Isolatoren werden nämlich in einem Isolationsgehäuse verbaut und dort beheizt oder luftgespült, um eine Ablagerung von Partikeln und/oder Feuchtigkeit auf den Isolatoren zu verhindern. Entsprechende Ablagerungen können zu Überschlägen oder Durchschlägen der elektrischen Spannung führen. Bei den Isolatoren handelt es sich um Porzellanisolatoren mit einem mittig an der dicksten Stelle des Isolators umlaufenden Flansch, mit dem sich der Isolator gegenüber dem Gehäuse abstützt. The isolation of the discharge electrodes with respect to the collecting electrodes requires reasons of electrical insulation and for reasons of safe load transfer from the support to the housing on the one hand quite large insulators and also a lot of space for the installation of the insulators. The insulators are in fact installed in an insulating housing and heated or air-flushed there to a deposition of particles and / or moisture on the insulators prevent. Corresponding deposits can lead to flashovers or breakdowns of the electrical voltage. The insulators are porcelain insulators with a central flange at the thickest point of the insulator flange, with which the insulator is supported against the housing.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, den eingangs genannten und zuvor näher beschriebenen Elektroabscheider derart auszugestalten und weiterzubilden, dass Bauraum eingespart werden kann. Wenn die Isolatoren als auch die Isolationsgehäuse kleiner ausgeführt werden können, lassen sich erhebliche Kosten einsparen. The present invention is therefore based on the object, the above-mentioned and previously described in detail electrical precipitator in such a way and further, that space can be saved. If the insulators as well as the isolation housings can be made smaller, considerable costs can be saved.
Diese Aufgabe ist bei einem Elektroabscheider nach dem Oberbegriff des Anspruchs 1 dadurch gelöst, dass der wenigstens eine Isolator ein Hohlkunststoffverbundisolator ist. This object is achieved in an electrostatic precipitator according to the preamble of claim 1, characterized in that the at least one insulator is a hollow plastic composite insulator.
Die Erfindung hat erkannt, dass auf die bisher verwendeten Porzellanisolatoren zugunsten von Hohlkunststoffverbundisolatoren verzichtet werden kann, um dadurch Platz und somit letztlich Kosten zu sparen. Die Platzersparnis ergibt sich trotz des Umstands, dass der Hohlkunststoffverbundisolator, wie der Name schon sagt, innen hohl ist. Durch die Verwendung eines Hohlkunststoffverbundisolators kann aber insbesondere Bauhöhe eingespart werden. Des Weiteren kann trotz der hohlen Bauform eine sehr gute Lastabtragung erreicht werden, so dass bedarfsweise weniger Isolatoren von Nöten sind, was zu einer weiteren Einsparung von Bauraum und Kosten führt. Dies kann insbesondere auch an dem Umstand liegen, dass der The invention has recognized that it is possible to dispense with the previously used porcelain insulators in favor of hollow plastic composite insulators, thereby saving space and thus ultimately costs. The space savings result despite the fact that the hollow plastic composite insulator, as the name implies, is hollow inside. By using a hollow plastic composite insulator but in particular height can be saved. Furthermore, despite the hollow design, a very good load transfer can be achieved, so that, if necessary, less insulators are needed, which leads to a further saving of installation space and costs. This may in particular also be due to the fact that the
Hohlkunststoffverbundisolator wenigstens teilweise aus einem Hollow plastic composite insulator at least partially from one
Kunststoffverbundmaterial gefertigt ist. Dabei kann es sich beispielsweise um ein Laminatverbund mit wenigstens einer Kunststoffschicht handeln. Allerdings können Laminatschichten mit erhöhter spezifischer elektrischer Leitfähigkeit hinsichtlich der Isolationswirkung problematisch sein. Dies schränkt die Wahl der Laminatschichten gegebenenfalls ein. Es kann sich bei dem Kunststoffverbund aber beispielsweise auch um ein Kunststofffaserverbund, etwa in Form eines Bauteils aus faserverstärktem Kunststoff, handeln, was wegen höherer Steifigkeit und/oder Festigkeit des Plastic composite material is made. This may be, for example, a laminate composite with at least one plastic layer. However, laminate layers with increased specific electrical conductivity can be problematic with regard to the insulation effect. This optionally restricts the choice of laminate layers. It can be in the plastic composite but for example, a plastic fiber composite, such as in the form of a fiber-reinforced component Plastic, which is due to higher rigidity and / or strength of the plastic
Hohlkunststoff erbundisolators typischerweise bevorzugt sein wird. Grundsätzlich kommen unterschiedliche Fasern und Kunststoffe in Frage, insbesondere solche mit einer geringen spezifischen elektrischen Leitfähigkeit. Als Kunststoff sind Hollow plastic composite insulator will typically be preferred. In principle, different fibers and plastics come into question, in particular those with a low specific electrical conductivity. As plastic are
insbesondere Duroplaste, wie etwa Kunstharz, insbesondere Epoxidharz, geeignet. Es können aber auch andere Kunststoffe wie beispielsweise Thermoplaste oder Silikon, zum Einsatz kommen. Als Fasern kommen insbesondere Glasfasern aber auch in particular thermosets, such as synthetic resin, in particular epoxy resin suitable. However, other plastics such as thermoplastics or silicone may also be used. In particular, glass fibers are used as fibers
Keramikfasern und organische Kunststofffasern wie Aramid in Frage. Bevorzugt sind einzelne Bauteile oder Abschnitte des Hohlkunststoffverbundisolators als Ceramic fibers and organic synthetic fibers such as aramid in question. Individual components or sections of the hollow plastic composite insulator are preferred as
Verbundmaterial ausgebildet. Es kann aber auch der gesamte Composite material formed. But it can also be the whole
Hohlkunststoffverbundisolator aus einem oder mehreren Verbundwerkstoffen gebildet sein.  Hollow plastic composite insulator may be formed from one or more composite materials.
Bei einer ersten besonders bevorzugten Ausgestaltung des Elektroabscheiders weist der Hohlkunststoffverbundisolator einen rohrförmigen Abschnitt, bedarfsweise ein hohles Kunststoffrohr, und an den Enden des rohrförmigen Abschnitts Flansche für die Anbindung an das Gehäuse einerseits und die Trageinrichtung andererseits auf. Die Trageinrichtung ist daher über die Länge des rohrförmigen Abschnitts vom Gehäuse beabstandet, so dass ein Überspringen von Ladung verhindert werden kann. Die Flansche sorgen zudem für eine hohe und sichere Lastabtragung, so dass eine stabile und dauerhafte Verbindung bereitgestellt werden kann. Der rohrförmige Abschnitt kann aus Stabilitätsgründen einen konstanten Querschnitt und/oder Umfang aufweisen. Alternativ oder zusätzlich bietet es sich an, wenn der rohrförmige Abschnitt wenigstens teilweise aus wenigstens einem Kunststoffverbundmaterial ausgebildet ist, wie dies zuvor beschrieben worden ist. Dann kann ein stabiler und steifer Hohlkunststoffverbundisolator bereitgestellt werden. In a first particularly preferred embodiment of the electrostatic precipitator, the hollow plastic composite insulator has a tubular portion, if necessary, a hollow plastic tube, and at the ends of the tubular portion flanges for connection to the housing on the one hand and the support means on the other. The support means is therefore spaced from the housing along the length of the tubular portion, so that charge overflow can be prevented. The flanges also ensure a high and secure load transfer, so that a stable and permanent connection can be provided. The tubular portion may have a constant cross section and / or circumference for reasons of stability. Alternatively or additionally, it is expedient if the tubular section is formed at least partially from at least one plastic composite material, as has been described above. Then, a stable and rigid hollow plastic composite insulator can be provided.
Aus Gründen einer zuverlässigen Isolierung und einer hohen mechanischen Festigkeit kann insbesondere der rohrförmige Abschnitt bzw. das Kunststoffrohr wenigstens teilweise aus einem glasfaserverstärkten Kunststoff gebildet sein. In diesem For reasons of reliable insulation and high mechanical strength, in particular the tubular portion or the plastic tube may be at least partially formed of a glass fiber reinforced plastic. In this
Zusammenhang bietet es sich weiter an, wenn der Kunststoff ein Duroplast, etwa ein Kunstharz, ist. Grundsätzlich sind aber auch hier die vorstehend beschriebenen Ausgestaltungen des Kunststoffverbunds möglich. Context, it continues to offer, if the plastic is a thermoset, such as a Resin, is. In principle, however, the above-described embodiments of the plastic composite are also possible here.
Der rohrförmige Abschnitt kann an der Außenseite, also umlaufend nach außen gerichtet, wenigstens abschnittsweise eine polymere Schirmhülle bzw. eine The tubular portion may be on the outside, so circumferentially outwardly directed, at least partially a polymeric umbrella cover or a
Kriechstromhülle aufweisen, so dass sich keine Kriechströme bilden. Dabei werden besonders gute Ergebnisse erzielt, wenn die Schirmhülle bzw. eine Kriechstromhülle aus Silikon gefertigt ist. Auch das Silikon kann zur Verbesserung der mechanischen Eigenschaften faserverstärkt, insbesondere glasfaserverstärkt, sein.  Have leakage current, so that no leakage currents form. In this case, particularly good results are achieved when the screen cover or a Kriechstromhülle is made of silicone. The silicone may also be fiber-reinforced, in particular glass fiber reinforced, to improve the mechanical properties.
Alternativ oder zusätzlich können die Flansche aus Metall ausgebildet sein. Dadurch kann ein Stabilitätsgewinn erzielt werden. Die Verwendung eines elektrisch leitfähigen Materials ist insoweit zu tolerieren, als dass auch das darüber Alternatively or additionally, the flanges may be formed of metal. As a result, a gain in stability can be achieved. The use of an electrically conductive material is to be tolerated insofar as that too
angebundene Gehäuse und die darüber angebundene Trageinrichtung vorzugsweise aus Metall bestehen können. Besonders zweckmäßig ist es in diesem Zusammenhang aus elektrischer und mechanischer Sicht, wenn die Flansche aus Aluminium gefertigt sind. Flansche, die wenigstens teilweise aus einem elektrisch nichtleitenden Werkstoff gebildet sind, sind auch denkbar und besser für die elektrische Isolation geeignet. Bei dem Werkstoff kann es sich der Einfachheit halber beispielswiese um einen, insbesondere faserverstärkten, Kunststoff handeln. Dabei ist es zudem zweckmäßig, wenn ein zuvor genannter Kunststoff und/oder zuvor genannte Fasern verwendet werden. tethered housing and the carrying device connected thereto preferably can be made of metal. It is particularly useful in this context from an electrical and mechanical point of view, if the flanges are made of aluminum. Flanges, which are at least partially formed of an electrically non-conductive material, are also conceivable and better suited for electrical insulation. For the sake of simplicity, the material may be a plastic, in particular fiber-reinforced, for example. It is also expedient if a previously mentioned plastic and / or aforementioned fibers are used.
Die Flansche können dabei zusätzlich oder alternativ mit dem rohrförmigen Abschnitt verklebt sein. Dadurch kann eine kostengünstige und stabile Verbindung hergestellt werden, die zudem eine lange Haltbarkeit aufweist. The flanges may additionally or alternatively be glued to the tubular portion. This allows a cost-effective and stable connection can be made, which also has a long shelf life.
Durch den Hohlkunststoffverbundisolator, insbesondere durch den rohrförmigen Abschnitt, kann eine Tragstruktur der Trageinrichtung geführt sein. Diese ist somit nach außen isoliert und kann sich beispielsweise an einem oberen Flansch des Hohlkunststoffverbundisolators abstützen. Um für eine ausreichende Isolierung zu sorgen, kann die Tragstruktur in radialer Richtung um mindestens 50 mm vom rohrförmigen Abschnitt des By the hollow plastic composite insulator, in particular by the tubular portion, a support structure of the support means may be performed. This is thus insulated to the outside and can be supported for example on an upper flange of the hollow plastic composite insulator. In order to ensure sufficient insulation, the support structure in the radial direction by at least 50 mm from the tubular portion of the
Hohlkunststoffverbundisolators beabstandet sein. Alternativ oder zusätzlich kann aus demselben Grund und aus mechanischen Gesichtspunkten der Innendurchmesser des Hohlkunststoffverbundisolators zwischen 250 mm und 750 mm betragen. Als besonders zweckmäßig hat sich in diesem Zusammenhang ein Innendurchmesser zwischen 400 mm und 600 mm erwiesen. Alternativ oder zusätzlich kann die Trageinrichtung wenigstens einen oberen Be hollow plastic composite insulator spaced. Alternatively or additionally, for the same reason and from a mechanical point of view, the inner diameter of the hollow plastic composite insulator can be between 250 mm and 750 mm. Be particularly useful in this context, an internal diameter between 400 mm and 600 mm proved. Alternatively or additionally, the carrying device may have at least one upper
Tragrahmen aufweisen. Über diesen Tragrahmen können dann die Sprühelektroden im Gehäuse gehalten werden. Dabei ist es aus Kostengründen besonders bevorzugt, wenn lediglich ein Tragrahmen vorgesehen ist. Für eine stabile und sichere Lagerung der Trageinrichtung kann diese vorzugsweise von bis zu vier Hohlkunststoffverbundisolatoren gehalten werden. Kostengünstig und bei geeigneter Ausführung dennoch stabil sowie langlebig kann es sein, lediglich bis zu zwei Hohlkunststoffverbundisolatoren zu verwenden. Die Vorteile der Verwendung von Hohlkunststoffverbundisolatoren kommen insbesondere zum Tragen, wenn die Sprühelektroden als Drähte und/oder die Niederschlagselektroden als Rohre ausgebildet sind. Dies stellt eine kompakte Bauform dar, deren Kompaktheit durch die Hohlkunststoffverbundisolatoren noch gesteigert werden kann. Dabei ist es besonders bevorzugt, weil platzsparend, wenn die Niederschlagselektroden als Rohrbündel ausgebildet sind.  Have support frame. About this support frame then the Sprühelektroden can be kept in the housing. It is particularly preferred for reasons of cost, if only a support frame is provided. For a stable and secure storage of the support device, this can preferably be held by up to four hollow plastic composite insulators. Cost-effective and yet durable and durable, it may be possible to use only up to two hollow plastic composite insulators. The advantages of using hollow plastic composite insulators come into play in particular if the discharge electrodes are in the form of wires and / or the collecting electrodes are tubes. This represents a compact design, the compactness of which can be further increased by the hollow plastic composite insulators. It is particularly preferred because space-saving, if the collecting electrodes are formed as a tube bundle.
Alternativ oder zusätzlich kann der Elektroabscheider als Nass-Elektroabscheider ausgebildet sein. Dann kann auf aufwendige mechanische Reinigungseinrichtungen zum Entfernen der abgeschiedenen Partikel verzichtet werden. Es kann vielmehr platzsparend eine Filterspülung vorgesehen sein. Nachfolgend wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. In der Zeichnung zeigt Alternatively or additionally, the electrostatic precipitator may be configured as a wet electrostatic precipitator. Then can be dispensed with expensive mechanical cleaning devices for removing the deposited particles. It can rather be provided space-saving filter cleaning. The invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment. In the drawing shows
Fig. 1 einen Nass-Elektroabscheider in einer vertikalen Schnittansicht, 1 shows a wet electrostatic precipitator in a vertical sectional view,
Fig. 2 den Nass-Elektroabscheider aus Fig. 1 in einer horizontalen Fig. 2 shows the wet electrostatic precipitator of Fig. 1 in a horizontal
Schnittansicht,  Sectional view
Fig. 3 ein Isolationsgehäuse des Nass-Elektroabscheiders aus Fig. 1 in einer vertikalen Schnittansicht und Fig. 3 is an insulation housing of the wet electrostatic precipitator of Fig. 1 in a vertical sectional view and
Fig. 4 den Hohlkunststoffverbundisolator des Isolationsgehäuses aus Fig. 3 in einer teilweise vertikal geschnittenen Darstellung. Fig. 4 shows the hollow plastic composite insulator of the insulation housing of FIG. 3 in a partially vertical sectional view.
In der Fig. 1 ist ein Elektroabscheider 1 in Form eines Nass-Elektroabscheiders dargestellt. Der Elektroabscheider 1 umfasst ein Gehäuse 2 mit einem oberen Gaseintrittsstutzen 3 und einem unteren Gasaustrittsstutzen 4. Zwischen dem Gaseintrittsstutzen 3 und dem Gasaustrittsstutzen 4 ist ein Rohrbündel 5 aus rohrförmigen Niederschlagselektroden 6 vorgesehen, insbesondere im Gehäuse 2 aufgehängt. In Fig. 1, an electrostatic precipitator 1 is shown in the form of a wet electrostatic precipitator. The electrostatic precipitator 1 comprises a housing 2 with an upper gas inlet nozzle 3 and a lower gas outlet nozzle 4. Between the gas inlet nozzle 3 and the gas outlet nozzle 4, a tube bundle 5 of tubular collecting electrodes 6 is provided, in particular suspended in the housing 2.
Das in der Fig. 2 in einem horizontalen Schnitt dargestellte Rohrbündel 5 ist so vorgesehen, dass der in das Gehäuse 2 eintretende Gasstrom durch das Rohrbündel 5 strömt, bevor der Gasstrom das Gehäuse 2 wieder verlässt. Die The tube bundle 5 shown in a horizontal section in FIG. 2 is provided so that the gas flow entering the housing 2 flows through the tube bundle 5 before the gas flow leaves the housing 2 again. The
Niederschlagselektroden 6 sind elektrisch geerdet und weisen im Wesentlichen zentral durch die Niederschlagselektroden 6 des Rohrbündels 5 verlaufende  Precipitation electrodes 6 are electrically grounded and have substantially centrally through the collecting electrodes 6 of the tube bundle 5 extending
Sprühelektroden 7 in Form von Drähten auf. Die Sprühelektroden 7 sind an einer Trageinrichtung 8 festgelegt, die beim dargestellten und insoweit bevorzugten Elektroabscheider 1 oberhalb und unterhalb des Rohrbündels 5 jeweils einenSpray electrodes 7 in the form of wires. The spray electrodes 7 are fixed to a support device 8, which in the illustrated and so far preferred electrostatic precipitator 1 above and below the tube bundle 5 each one
Tragrahmen 9 aufweist. An den Tragrahmen 9 sind verstellbare Führungsrahmen gehalten, an denen die Sprühelektroden 7 montiert sind. Über die Führungsrahmen können die Sprühelektroden 7 mittig zu den Niederschlagselektroden 6 des Support frame 9 has. On the support frame 9 are adjustable guide frame held on which the spray electrodes 7 are mounted. About the guide frame, the spray electrodes 7 can be centrally to the collecting electrodes 6 of the
Rohrbündels 5 ausgerichtet werden. Die Sprühelektroden 7 sind gegenüber den Niederschlagselektroden 6 elektrisch isoliert. Zu diesem Zweck und zur Isolierung der Sprühelektroden 7 gegenüber dem Gehäuse 2 des Elektroabscheiders 1 sind die Tragrahmen 8 über Tragstrukturen 10 in Form von Tragrohren an Hohlkunststoffverbundisolatoren 11 abgestützt, und zwar jeweils gegenüber einem oberen Flansch 12. Der jeweilige Tube bundle 5 are aligned. The discharge electrodes 7 are electrically insulated from the collecting electrodes 6. For this purpose and for the insulation of the spray electrodes 7 relative to the housing 2 of the electrostatic precipitator 1, the support frames 8 are supported by support structures 10 in the form of support tubes on hollow plastic composite insulators 11, in each case opposite an upper flange 12
Hohlkunststoffverbundisolator 11 stützt sich seinerseits gegenüber dem Gehäuse 2 ab, und zwar mit einem unteren Flansch 13. Zudem ist der Hollow plastic composite insulator 11 is supported in turn against the housing 2, with a lower flange 13. In addition, the
Hohlkunststoffverbundisolator 11 in einem Isolationsgehäuse 14 angeordnet und dementsprechend von der Umgebung abgeschottet. Das in der Fig. 1 mit 14 bezeichnete Isolationsgehäuse 14 ist in der Fig. 3 vergrößert dargestellt. Nicht dargestellt ist, dass das Isolationsgehäuse 14 einen  Hollow plastic composite insulator 11 disposed in an insulating housing 14 and accordingly sealed off from the environment. The designated in Fig. 1 with 14 insulating housing 14 is shown in Fig. 3 enlarged. Not shown is that the insulating housing 14 a
Lufteintrittsstutzen, spezielle Düsen und einen Luftaustrittsstutzen aufweist, über die das Isolationsgehäuse 14 mit Luft gespült wird. Die Luft tritt dabei über die Düsen in das Isolationsgehäuse 14 ein. Am unteren Ende des Isolationsgehäuses 14 ist ein Gehäuseinnenflansch 15 vorgesehen, auf dem der Hohlkunststoffverbundisolator 11 sitzt und mit dem der untere Flansch 13 des Hohlkunststoffverbundisolators 11 verschraubt ist. Mit dem oberen Flansch 12 des Hohlkunststoffverbundisolators 11 ist ein Deckelelement 16 verschraubt, von dessen Mitte eine Tragstruktur 10 in Form eines Tragrohrs herabhängt. Die Tragstruktur 10 verläuft dementsprechend mittig von oben nach unten durch den Hohlkunststoffisolator 11 und durch den Air inlet nozzle, special nozzles and an air outlet nozzle through which the insulation housing 14 is purged with air. The air enters the insulation housing 14 via the nozzles. At the lower end of the insulating housing 14 a Gehäuseinnenflansch 15 is provided, on which the hollow plastic composite insulator 11 is seated and with which the lower flange 13 of the hollow plastic composite insulator 11 is screwed. With the upper flange 12 of the hollow plastic composite insulator 11, a cover member 16 is screwed, from the center of a support structure 10 in the form of a support tube hangs down. The support structure 10 accordingly runs centrally from top to bottom through the hollow plastic insulator 11 and through the
Gehäuseinnenflansch 15. Am unteren Ende der Tragstruktur 10 der Trageinrichtung 8 ist der Tragrahmen 9 montiert.  Housing inner flange 15. At the lower end of the support structure 10 of the support means 8, the support frame 9 is mounted.
Beim dargestellten und insoweit bevorzugten Elektroabscheider 1 ist das obere Ende des Isolationsgehäuses 14 mit einer Abdeckung 17 verschlossen. Bei dem gegenüber angeordneten Isolationsgehäuse 14 ist keine obere Abdeckung 17 vorgesehen. Vielmehr ist dort die Tragstruktur 10 elektrisch mit der Spannungsversorgung, insbesondere einem Hochspannungsgleichrichtergerät verbunden. Dabei ist das entsprechende Isolationsgehäuse 14 zusammen mit dem Anschluss an die In the illustrated preferred electrostatic precipitator 1, the upper end of the insulating housing 14 is closed by a cover 17. In the insulating housing 14 arranged opposite no upper cover 17 is provided. Rather, there is the support structure 10 is electrically connected to the power supply, in particular a high-voltage rectifier device. In this case, the corresponding insulating housing 14 together with the connection to the
Spannungsversorgung luftgespült. Power supply flushed.
In den dargestellten und insoweit bevorzugten vier Isolationsgehäusen 14 ist jeweils ein Hohlkunststoffverbundisolator 11 gleicher Bauart vorgesehen, wie er in der Fig. 4 im Detail dargestellt ist. Die tragende Struktur wird dabei durch einen rohrförmigen Abschnitt 18 aus einem glasfaserverstärkten Duroplasten gebildet, das mit seinen beiden Längsenden jeweils mit einem Flansch 12,13 verklebt ist. Die Flansche 12,13 bestehen beim dargestellten und insoweit bevorzugten In the illustrated and insofar preferred four insulation housings 14, a hollow plastic composite insulator 11 of the same type is provided in each case, as shown in detail in FIG. 4. The supporting structure is formed by a tubular portion 18 of a glass fiber reinforced thermosets, which is glued with its two longitudinal ends in each case with a flange 12,13. The flanges 12,13 exist in the illustrated and so far preferred
Hohlkunststoffverbundisolator 11 aus Aluminium. Die Flansche 12,13 weisen zudem umlaufend mehrere Bohrungen auf, um den Hohlkunststoffverbundisolator 11 mit dem Gehäuse 2 und mit der Trageinrichtung 8 zu verschrauben. Um den rohrförmigen Abschnitt 18 aus glasfaserverstärktem Kunststoff herum ist eine Schirmhülle 19 aus Kunststoff, und zwar vorliegend Silikon, mit entsprechenden Schirmen 20 vorgesehen, die ein Überschlagen von Spannung verhindern.  Hollow plastic composite insulator 11 made of aluminum. The flanges 12,13 also have circumferentially several holes to screw the hollow plastic composite insulator 11 with the housing 2 and with the support means 8. To the tubular portion 18 made of glass fiber reinforced plastic around a shield shell 19 made of plastic, in the present case silicone, provided with corresponding shields 20, which prevent a rollover of tension.
Beim dargestellten und insoweit bevorzugten Hohlkunststoffverbundisolator 11, der vergrößert in Fig. 4 dargestellt ist, besteht ein Luftspalt 21 zwischen der zentral angeordneten Tragstruktur 10 und dem rohrförmigen Abschnitt 18 aus dem In the illustrated and so far preferred hollow plastic composite insulator 11, which is shown enlarged in Fig. 4, there is an air gap 21 between the centrally arranged support structure 10 and the tubular portion 18 of the
faserverstärkten Duroplasten. Dieser Luftspalt 20 ist ringförmig und weist eine Breite von wenigstens 100 mm auf. Der Innendurchmesser des rohrförmigen Abschnitts 18 weist dabei wenigstens 250 mm, insbesondere etwa 300 mm, auf. Dabei ist der Hohlkunststoffverbundisolator 11 wenigstens 500 mm, insbesondere gut 600 mm, hoch. Das Isolationsgehäuse 14 ist dagegen vorzugsweise zwischen 700 mm und 1100 mm, insbesondere etwa 900 mm, hoch. Der radiale Abstand zwischen dem fiber-reinforced thermosets. This air gap 20 is annular and has a width of at least 100 mm. The inner diameter of the tubular portion 18 has at least 250 mm, in particular about 300 mm. In this case, the hollow plastic composite insulator 11 is at least 500 mm, in particular well 600 mm, high. By contrast, the insulation housing 14 is preferably between 700 mm and 1100 mm, in particular about 900 mm, high. The radial distance between the
Hohlkunststoffverbundisolator 11, insbesondere der Schirmhülle 19, und dem Hollow plastic composite insulator 11, in particular the shield shell 19, and the
Isolationsgehäuse 14 beträgt wenigstens 100 mm, wobei der Durchmesser des Isolationsgehäuses 14 wenigstens 500 mm, vorzugsweise maximal 750 mm, insbesondere zwischen 600 mm und 650 mm beträgt. Zudem beträgt die Breite der Schirme 20 in radialer Richtung zwischen 25 mm und 75 mm, insbesondere zwischen 35 mm und 55 mm. Im Übrigen weist der Lochkreis der Flansche 12,13 einen Durchmesser zwischen 300 mm und 400 mm auf. Die Bohrungen 22 weisen zudem Durchmesser von 12 mm bis 16 mm, insbesondere etwa 14 mm, auf. Insulation housing 14 is at least 100 mm, wherein the diameter of the insulating housing 14 is at least 500 mm, preferably at most 750 mm, in particular between 600 mm and 650 mm. In addition, the width of the Umbrellas 20 in the radial direction between 25 mm and 75 mm, in particular between 35 mm and 55 mm. Incidentally, the bolt circle of the flanges 12,13 has a diameter between 300 mm and 400 mm. The holes 22 also have diameters of 12 mm to 16 mm, in particular about 14 mm.

Claims

Patentansprüche Patent claims
1. Elektroabscheider (1) zur elektrostatischen Abscheidung von Partikeln, 1. Electrical separator (1) for the electrostatic separation of particles,
insbesondere Staubteilchen und/oder Aerosolen, aus einem den in particular dust particles and/or aerosols, from one of the
Elektroabscheider (1) durchströmenden Gasstrom, mit einem Gehäuse (2) und wenigstens einer in dem Gehäuse (2) aufgenommenen Sprühelektrode (7) und wenigstens einer in dem Gehäuse (2) aufgenommenen Niederschlagselektrode (6), wobei die Sprühelektrode (7) über eine Trageinrichtung (8) im Gehäuse (2) gehalten ist und wobei die Trageinrichtung (8) gegenüber der wenigstens einen Niederschlagselektrode (6) und dem Gehäuse (2) über wenigstens einen Isolator elektrisch isoliert ist, Gas stream flowing through the electrical separator (1), with a housing (2) and at least one spray electrode (7) accommodated in the housing (2) and at least one precipitation electrode (6) accommodated in the housing (2), the spray electrode (7) having a The carrying device (8) is held in the housing (2) and the carrying device (8) is electrically insulated from the at least one precipitation electrode (6) and the housing (2) via at least one insulator,
d a d u r c h g e k e n n z e i c h n e t , d a s s that is not the case, that is
der wenigstens eine Isolator ein Hohlkunststoffverbundisolator (11) ist. the at least one insulator is a hollow plastic composite insulator (11).
2. Elektroabscheider nach Anspruch 1, 2. Electrical separator according to claim 1,
d a d u r c h g e k e n n z e i c h n e t , d a s s that is not the case, that is
der Hohlkunststoffverbundisolator (11) einen hohlen rohrförmigen Abschnitt (18) wenigstens teilweise aus Kunststoff und an den Enden des rohrförmigen Abschnitts (18) Flansche (12,13) für die Anbindung an das Gehäuse (2) einerseits und die Trageinrichtung (8) andererseits aufweist. the hollow plastic composite insulator (11) has a hollow tubular section (18) at least partially made of plastic and at the ends of the tubular section (18) has flanges (12, 13) for connection to the housing (2) on the one hand and the support device (8) on the other hand .
3. Elektroabscheider nach Anspruch 2, 3. Electrical separator according to claim 2,
d a d u r c h g e k e n n z e i c h n e t , d a s s that is not the case, that is
der rohrförmige Abschnitt (18) wenigstens teilweise aus einem the tubular section (18) at least partially consists of one
glasfaserverstärkten Kunststoff, insbesondere Duroplasten, gebildet wird. glass fiber reinforced plastic, in particular thermosets, is formed.
4. Elektroabscheider nach Anspruch 2 oder 3, 4. Electrical separator according to claim 2 or 3,
d a d u r c h g e k e n n z e i c h n e t , d a s s that is not the case, that is
der rohrförmige Abschnitt (18) an der Außenseite wenigstens abschnittsweise eine polymere Schirmhülle (19), insbesondere aus Silikon, aufweist. the tubular section (18) has, at least in sections, a polymeric shielding cover (19), in particular made of silicone, on the outside.
Elektroabscheider nach einem der Ansprüche 2 bis 4, Electrical separator according to one of claims 2 to 4,
d a d u r c h g e k e n n z e i c h n e t , d a s s that is not the case, that is
die Flansche (12,13) aus Metall, insbesondere aus Aluminium, ausgebildet sind. the flanges (12, 13) are made of metal, in particular aluminum.
Elektroabscheider nach einem der Ansprüche 2 bis 5, Electrical separator according to one of claims 2 to 5,
d a d u r c h g e k e n n z e i c h n e t , d a s s that is not the case, that is
die Flansche (12,13) mit dem rohrförmigen Abschnitt (18) verklebt sind. the flanges (12, 13) are glued to the tubular section (18).
Elektroabscheider nach einem der Ansprüche 2 bis 6, Electrical separator according to one of claims 2 to 6,
d a d u r c h g e k e n n z e i c h n e t , d a s s that is not the case, that is
durch den rohrförmigen Abschnitt (18) eine Tragstruktur (10) der a support structure (10) through the tubular section (18).
Trageinrichtung (8) geführt ist. Carrying device (8) is guided.
Elektroabscheider nach Anspruch 7, Electrical separator according to claim 7,
d a d u r c h g e k e n n z e i c h n e t , d a s s that is not the case, that is
die Tragstruktur the supporting structure
(10) in radialer Richtung um mindestens 50 mm vom (10) in the radial direction by at least 50 mm from
rohrförmigen Abschnitt (18) beabstandet ist. tubular section (18) is spaced apart.
Elektroabscheider nach einem der Ansprüche 1 bis 8, Electrical separator according to one of claims 1 to 8,
d a d u r c h g e k e n n z e i c h n e t , d a s s that is not the case, that is
der Innendurchmesser des Hohlverbundisolators (11) zwischen 250 mm undthe inner diameter of the hollow composite insulator (11) between 250 mm and
750 mm, insbesondere 500 mm beträgt. 750 mm, in particular 500 mm.
Elektroabscheider nach einem der Ansprüche 1 bis 9, Electrical separator according to one of claims 1 to 9,
d a d u r c h g e k e n n z e i c h n e t , d a s s that is not the case, that is
die Trageinrichtung (8), bedarfsweise wenigstens, einen oberen Tragrahmen (9) aufweist. the carrying device (8), if necessary at least, has an upper support frame (9).
11. Elektroabscheider nach einem der Ansprüche 1 bis 9, 11. Electrical separator according to one of claims 1 to 9,
d a d u r c h g e k e n n z e i c h n e t , d a s s that is not the case, that is
die Trageinrichtung (8) einen oberen Tragrahmen (9) aufweist. the carrying device (8) has an upper support frame (9).
12. Elektroabscheider nach einem der Ansprüche 1 bis 11, 12. Electrical separator according to one of claims 1 to 11,
d a d u r c h g e k e n n z e i c h n e t , d a s s that is not the case, that is
die Trageinrichtung (8) von bis zu vier, vorzugsweise bis zu zwei, the carrying device (8) of up to four, preferably up to two,
Hohlkunststoffverbundisolatoren (11) gehalten wird. Hollow plastic composite insulators (11) is held.
Elektroabscheider nach einem der Ansprüche 1 bis 12, Electrical separator according to one of claims 1 to 12,
d a d u r c h g e k e n n z e i c h n e t , d a s s that is not the case, that is
die Sprühelektroden (7) als Drähte und/oder die Niederschlagselektroden (6) als the spray electrodes (7) as wires and/or the precipitation electrodes (6) as
Rohre, insbesondere als Rohrbündel (5), ausgebildet sind. Tubes, in particular as tube bundles (5), are designed.
Elektroabscheider nach einem der Ansprüche 1 bis 13, Electrical separator according to one of claims 1 to 13,
d a d u r c h g e k e n n z e i c h n e t , d a s s that is not the case, that is
der Elektroabscheider (1) als Nass-Elektroabscheider ausgebildet ist und, vorzugsweise, eine Filterspülung aufweist. the electrical separator (1) is designed as a wet electrical separator and, preferably, has a filter flush.
PCT/EP2015/064402 2014-06-26 2015-06-25 Electrodepositor for the electrostatic deposition of particles from a gas stream WO2015197771A1 (en)

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DE102014109012.8 2014-06-26

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CN105521872A (en) * 2016-01-26 2016-04-27 武汉龙净环保科技有限公司 Vertical-flow-type wet-type electric dust remover
CN107626455A (en) * 2017-10-30 2018-01-26 佛山市南海九洲普惠风机有限公司 A kind of electric field structure of high insulativity
CN108636610A (en) * 2018-04-08 2018-10-12 福州清净环保设备有限公司 A kind of wet electrical dust collector device of short pole span
CN109107764A (en) * 2018-08-21 2019-01-01 镇江中佳电器有限公司 Flue gas processing device is used in a kind of production of power supply line

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