EP2156895B1 - Séparateur électrostatique et système de chauffage - Google Patents

Séparateur électrostatique et système de chauffage Download PDF

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Publication number
EP2156895B1
EP2156895B1 EP09167687.4A EP09167687A EP2156895B1 EP 2156895 B1 EP2156895 B1 EP 2156895B1 EP 09167687 A EP09167687 A EP 09167687A EP 2156895 B1 EP2156895 B1 EP 2156895B1
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EP
European Patent Office
Prior art keywords
electrode
electrostatic separator
movement
bimetal
feed
Prior art date
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Active
Application number
EP09167687.4A
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German (de)
English (en)
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EP2156895A2 (fr
EP2156895A3 (fr
Inventor
Dietmar Steiner
Andreas Jennerjahn
Henrik Siegle
Peter Edelbrock
Ulrich Kappenstein
Tania Gonzalez-Baquet
Ulrike Mock
Lothar Diehl
Juergen Hilzinger
Pedro Da Silva
Uwe Clement
Dietmar Kratzer
Oliver Bachmann
Christian Kuehn
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP2156895A3 publication Critical patent/EP2156895A3/fr
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Publication of EP2156895B1 publication Critical patent/EP2156895B1/fr
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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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/74—Cleaning the 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
    • B03C2201/06—Ionising electrode being a needle

Definitions

  • the invention relates to an electrostatic precipitator, in particular for an exhaust pipe of an exhaust gas purification system, according to the preamble of claim 1. Furthermore, the invention relates to a heating system for generating energy by burning an energy source with an electrostatic precipitator according to claim 16.
  • heating systems use appropriate emission control systems. These are in particular to filter out the harmful substances and particles from exhaust gases, so that the remaining, purified exhaust gas can safely be released to the environment.
  • emission control systems are used in biomass heating systems, where in addition to otherwise economic and environmental benefits increased emissions of pollutants in the exhaust gases can occur.
  • biomass heating systems where in addition to otherwise economic and environmental benefits increased emissions of pollutants in the exhaust gases can occur.
  • relatively high emission of particulate matter as a pollutant component can be problematic in biomass heating systems.
  • An emission control system which is used for biomass heating systems to reduce particulate matter emission.
  • the device described therein can be installed in a flue gas channel and for this purpose has a lid which can be placed gas-tight on an associated opening on a flue gas channel.
  • a spray electrode for example in the form of a tensioned rod, is held over an insulating holder.
  • a high-voltage transformer with rectifier function allows the construction of a high DC voltage between the wire and the lid, which is electrically connected to the furnace tube, so that it acts as a collector electrode.
  • the DE 20 2007 004 263 U1 describes an electrostatic filter for purifying flue gases which uses a special coating of the precipitation electrode to prevent deposition of particles on this electrode.
  • Such electrostatic filters with a spray electrode and a collector electrode are also known as electrostatic precipitators. These are used for exhaust gas purification in an exhaust pipe of a heating system.
  • a capacitor is formed by the spray, which runs approximately centrally through the exhaust pipe and therefore also referred to as the center electrode, and a peripheral surface of the exhaust pipe, which is also referred to as a cylindrical capacitor in a cylindrical tube-shaped design of the exhaust pipe.
  • the spray or center electrode generally has a circular cross-section Flow direction of the exhaust gas, wherein the diameter of the cross section or the radius of curvature is formed generally relatively small, for example, less than 0.4 mm.
  • a field extending transversely to the flow direction is formed by the center electrode and the collector electrode formed by the lateral surface with field lines from the center electrode to the collector electrode.
  • a high voltage is applied to the center electrode, for example in the range of 15 kV.
  • a corona discharge is formed, through which the particles flowing through the field in the exhaust gas are charged in a unipolar manner. Due to this charge, most of the particles migrate through the electrostatic Coulomb forces to the inner wall of the exhaust pipe, which serves as a collector electrode.
  • the particles are electrostatically charged by the corona discharge which forms along the surface of the electrode. This is done at the molecular level by the following process: For example, if the electrode is at a negative high voltage relative to the exhaust pipe, a large number of gas molecules will be negatively charged. They move in the electric field applied by the electrode and the exhaust pipe in the direction of the exhaust pipe. If these meet on their way through the exhaust pipe to electrically neutral particles, they stick to these and charge the previously neutral particles also negative. The charged particles flow driven by electrostatic deflection forces to the inner wall of the exhaust pipe. Here the particles stick, lose their charge and are safely removed from the exhaust stream. This is the core process of an electrostatic precipitator and, depending on the geometry, height of the corona current, electrode shape, etc., leads to deposition rates of up to more than 90%.
  • Burning produces bipolar charged particles.
  • the distribution is symmetrical, ie, there are the same number of positive and negative charged particles.
  • the number of charged particles is reduced by approx. 10% per second due to coagulation, over 10% of charged particles still exist at the site of the electrostatic precipitator. This corresponds to about one to two seconds flying time of the particles from the place of combustion.
  • the charged particles now come close to the negative high voltage electrode of the charger, in particular a unit of exhaust pipe and electrode, the negative particles will flow away from the electrode in the direction of the exhaust pipe inside.
  • the positive particles on the other hand, flow towards the electrode.
  • a part is neutralized or negatively charged while flowing through the charger, but the rest of the particles reaches the electrode and deposits there.
  • the electrostatic deflector Because the fine dust deposited on the electrode locally prevents the formation of the corona. As a result, the electrical charge of the particles deteriorates. The deposition efficiency of the system is degraded.
  • a disadvantage of the electrostatic precipitators according to the prior art is that it comes after a longer period of operation to a continuous degradation of the corona current at a constant high voltage. As a result, the charging efficiency of the electrode decreases, which in turn reduces the separation efficiency of the entire system.
  • the invention has for its object to provide an electrostatic precipitator, which overcomes this disadvantage and in particular prevents or reduces the deposition of particles on the electrode to increase the service life of the electrostatic precipitator. Further, the invention has for its object to provide a heating system with a separator according to the invention, which guarantees reliable exhaust gas purification.
  • the electrostatic precipitator according to the invention is characterized in that in the electrostatic precipitator, in particular for an exhaust pipe of an exhaust gas purification system, with a flow channel having a channel wall and a channel inside, through which flows a particle-containing exhaust gas in a flow direction, and in the channel interior substantially in Flow direction extending electrode, for the formation of an electric field between the electrode and the channel wall, it is provided that at least one particle repelling means moved by supply / removal of heat is included, which prevents particles of the exhaust gas from depositing on the electrode, in particular permanently depositing.
  • the particle repelling agent effectively prevents or reduces at least deposition of particles on the electrode.
  • the particle repelling agent can effectively reduce the deposition of particulates on other components of the electrostatic precipitator.
  • At least one particle-repelling agent is designed as a thermally induced movement element that is separate in particular from the electrode and that is moved by heat and thus prevents deposition.
  • the particle repelling means in the embodiment is a separate unit which performs a movement relative to the electrode and preferably contacts the electrode in one movement.
  • the movement element comprises a shaped bimetal as the drive element, to which at least one element driven by the bimetal or another mechanism is coupled.
  • a movement of other elements or mechanisms is initiated by the bimetal in supply and removal of heat.
  • the movement element is designed as at least one abutment element arranged at a distance from the electrode, which thermally induced upon activation abuts against the electrode, whereby a deposition of particles on the electrode is prevented.
  • the P microabweisesch on a kind of hammer, which is driven by the bimetal strikes against the electrode.
  • An embodiment of the electrostatic precipitator provides that the movement element is formed at least partially integrated on the electrode.
  • the moving element need not be attached to the electrode, but is at least partially co-formed with the electrode.
  • the movement element may in particular be designed in several parts;
  • a bimetal is integrally formed with the electrode.
  • To the bimetal further elements or mechanisms may be coupled, for example, a stop element which abuts against the electrode.
  • the electrode may also be nonlinear, that is not a straight line, but rather curved, bent, coiled, kinked or the like.
  • a further embodiment provides that the electrode is at least partially formed as a pre-stamped bimetal in order to induce a movement of the electrode at a predeterminable heating.
  • the bimetal is at least partially formed as part of the electrode.
  • the entire bimetal is integrated into the electrode, so that at least a portion of the electrode is formed as a bimetal.
  • Several sections of the electrode may be formed as a bimetal.
  • the bimetal can be pre-stamped in various forms, for example, serpentine, wavy, sawtooth wave, etc., to realize corresponding deformations.
  • the bimetal has at least one, preferably several knockouts.
  • the electrode may be formed differently shaped in the respective sections.
  • the electrode may thus comprise, at least in sections, current-flowable lugs, such as projections, to provide a larger active area of action.
  • the electrode may be formed, for example, barbed wire or with nubs, these projections may consist of the bimetal.
  • the electrode has a bistable snap element which upon activation by heat induces a movement of the electrode and thus prevents deposition.
  • the bistable snap element can preferably be realized with a bimetal. Other designs are possible.
  • the movement element can be formed at least partially integrated on the electrode feed, so that both the electrode feed itself and the electrode can thereby be moved.
  • the electrode feed can have a bistable snap element which, when activated by heat, induces a movement of the electrode feed and / or the electrode and thus prevents deposition on both components.
  • the moving element between the spray electrode and high-voltage ceramic insulation is attached.
  • the movement element in particular a bistable snap element, which is attached to the electrode feed serves as a receptacle or as a connector for the electrode.
  • the heating or cooling induced of the bimetal both the movement of the electrode and a mechanical impulse to the high-voltage ceramic insulation. In this way, both components can be kept free of particles
  • At least one movement element in particular a bistable snap element, may be fastened on the surface of an insulator, that is to say the high-voltage ceramic insulation on the electrode feed.
  • the movement elements are activated by heat supply or removal and thus generate a mechanical impulse to the high-voltage ceramic insulation.
  • the pulse is passed to the electrode and vibrates it, so that the adhering particles are shaken off. In this way, both components can be cleaned.
  • the movement element in particular a bistable snap element, in the region of the high voltage supply and / or the channel wall is fixed and that the movement element comprises a shaped bimetal as a drive element. With this at least one driven by the bimetal, another stop element is coupled.
  • the stop element is attached to the surface of the insulator spaced from the electrode lead, thermally induced when activated against the insulator and triggers a mechanical pulse for removing deposited particles on the electrode lead and the electrode. The pulse is transmitted to the spray electrode via the high-voltage leadthrough and causes it to vibrate.
  • the moving element this comprehensive formed bimetal as the drive element and / or the stop element at least about the width and about the length of the insulator on the electrode feed. They thus extend roof-like on the side of the electrode feed facing the electrode so over the insulator that it is shielded from falling particles, which in particular detach from the exhaust pipe inside.
  • the height of the pulse transmitted by the snap element is to be dimensioned such that the mechanical pulse can not damage the heated high-voltage ceramic insulation.
  • At least one particle repelling agent as a mechanical particle repellent comprising a particle non-stick coating is formed, which prevents permanent adhesion of particles to the electrode by reducing adhesion parameters. Also, a plurality of heatable Pumbleabweisestoff be provided.
  • the heating system according to the invention for generating energy by burning an energy carrier such as biomass is characterized in that it has a fine dust emitting heating system such as a biomass heating system for burning the energy carrier, wherein particle-containing exhaust gases, and an inventive electrostatic precipitator is provided.
  • the electrostatic precipitator according to the invention and the heating system according to the invention in particular an avoidance or reduction of fine dust deposits on the electrode is realized. Due to the non-linear design of the electrode, which is also called center or spray electrode, possibly also with projections, the active surface or the effective area of the electrode is increased. The system can reliably be freed of fine dust deposits by moving the electrode, and / or in a special embodiment also the electrode feed.
  • a snapping or beating motion is realized, which is achieved in particular by a corresponding pre-stamping of the bimetallic strip or the bimetallic strip. Due to the pre-embossment, the shape of the bimetal first remains constant until the heat energy is sufficient to initiate the deformation inhibited by pre-embossing in the manner of a so-called crack-frog effect. The subsequent movement then has a high acceleration, which is used to remove particles. Conversely, even when cooling down after switching off the heating system by jumping the pre-stamping a snapping motion triggered. This can be achieved for example by a convex / concave embossing of a bimetal disc.
  • the electrode itself is at least partially formed as an electrode of pre-stamped bimetal.
  • a bistable snap element can be integrated.
  • the bimetal passes through the temperature range of the snapping deformation.
  • a series of knockouts along the electrode which then deforms this zigzag, for example. Every time the stove starts and stops, it becomes light adhering fine dust from the electrode and / or the electrode feed shaken off.
  • the pre-stamping is to be dimensioned in such a way that a sufficiently large distance between the electrode and the surrounding furnace pipe is always maintained and an electrical flashover is reliably prevented.
  • the deformation of the bimetal can advantageously operate a kind of hammer work, which once strikes the electrode when switching on or off the furnace and freed of dust deposits.
  • the electrode and / or the electrode feed can also be provided with an anti-adhesion layer, for example using polyorganosiloxanes.
  • a corresponding doping of the silicon-oxygen compound ensures a sufficient for use as a discharge electrode high electrical conductivity or plasma resistance. Due to the mechanical cleaning by at least one bimetal dust deposits on the electrode can be periodically shaken off. This option does not consume additional energy as the bimetal is activated by the temperature change generated when the stove is turned on or off.
  • Fig. 1 schematically shows a longitudinal cross-section through an embodiment of an electrostatic precipitator 1 according to the invention, wherein the section represents only one half of the electrostatic precipitator 1.
  • the electrostatic precipitator 1 is arranged in an exhaust pipe 2, not shown here, of an exhaust gas purification system, not shown here, and comprises a flow channel 3.
  • the flow channel 3 is formed as a tubular portion of the exhaust pipe 2 and comprises a channel wall 4 and a channel interior 5. flows through the flow channel 3 a particle-containing exhaust gas represented here by an arrow P in the flow direction likewise represented by the arrow P.
  • an electrode 6, which is also referred to as a center electrode, spray electrode or corona electrode, extends in the interior of the flow channel 3.
  • the flow channel 3 is preferably formed in cross-section in the flow direction P rotationally symmetrical about a central axis, not shown here.
  • the electrode 6 extends substantially along this central axis.
  • the electrode 6 is fed via an electrode feed 7, which is covered with an insulator 8.
  • the electrode 6 forms a charging unit, in which particles can be charged electrically.
  • the electrode 6 forms with the channel wall 4, applying a high voltage, an electric field whose field lines extend substantially radially to the electrode 6 and the channel wall 4, substantially transversely, more precisely at right angles to the flow direction P.
  • the electrostatic precipitator 1 comprises in the illustrated embodiment in Fig. 1 a particle repellent 9.
  • the particle repellent 9 is integrated in the electrode 6.
  • the particle-repelling means 9 is designed as a movement element 9a, which is designed as a thermally induced movement element in the form of a bimetal 10.
  • the bimetal 10 is in Fig. 1 an integral part of the electrode 6, that is, a part the electrode 6 is formed as a bimetal 10. With a corresponding heat supply or removal, the bimetal 10 moves accordingly from a bistable position to another bistable position. Accordingly, the non-bimetal part of the electrode 6 moves along, as shown by the broken line. As a result of the movement and the associated oscillation of the electrode 6, particles adhering to the electrode 6 are removed mechanically or adhesion is prevented or reduced.
  • Fig. 2 schematically shows a longitudinal section through a further embodiment of an electrostatic precipitator 1 'according to the invention. Identical or similar parts are identified by the same reference numerals. A detailed description of already described components is eliminated.
  • the electrostatic precipitator 1 'after Fig. 2 is based on the same principle as the electrostatic precipitator 1 after Fig. 1 differs only by the execution of the Pumbleabweiseffens 9.
  • the electrostatic precipitator 1 is arranged in an exhaust pipe 2 only partially shown here not shown exhaust gas cleaning system and includes the flow channel 3.
  • the flow channel 3 is formed as a tubular portion of the exhaust pipe 2 and includes the Channel wall 4 and the channel interior 5. Through the flow channel 3, the particle-containing exhaust gas P flows in the corresponding flow direction.
  • the electrode 6 extends in the direction of flow in the interior of the flow channel 3.
  • the electrode 6 is fed via the electrode feed 7, which is encased by the insulator 8.
  • the P is also formed as a thermally induced movement element 9a', but not integrated into the electrode 6, but as a separate unit, namely as a separate stop element.
  • the moving element 9a ' comprises a suitably shaped bimetal 10, to which at least one further element is coupled in order to be driven by the bimetal 10.
  • the further element in this exemplary embodiment comprises a stop element or hammer 11 which is formed in the movement element 9a 'arranged at a distance from the electrode 6 such that it does not contact the electrode 6 in one position and strike the electrode 6 in another position. as shown by the dashed line. The movement of the hammer is effected by the bimetal 10.
  • the electrode 6 may be coated with a particle non-stick coating which is not shown here. As a result, adhering particles fall off the impulse-loaded part or do not adhere at all.
  • Fig. 3 schematically shows an embodiment of a moving element 9a.
  • the movement element 9a is designed as a bimetal 10, more precisely as a stamped punched and bent part with a suitable shape.
  • the suitable shape is here approximately in the form of a flash, that is approximately triangular-wave-shaped.
  • the pre-embossed form realizes a snapping movement, either of the hammer mechanism or of the electrode 6, depending on the design as an integrated or separate component.
  • the shapes can be arbitrarily selected.
  • Fig. 4 schematically shows another embodiment of the moving member 9a in two different bistable states.
  • the movement element 9a is formed as a bimetal strip 10 and pre-stamped approximately in a concave or convex shape.
  • the arrows shown are intended to represent forces and movements, in particular the vibration, and thus ultimately the snapping movement of the bimetal 10 when heated or cooled.
  • the bimetal 10 may be formed as a separate component or integrated into the electrode 6.
  • the electrostatic precipitator 1 'after Fig. 5 is based on the principle of the same as the electrostatic precipitator 1 after the Fig. 1 and 2 differs only by the execution of the Prismabweiseschs 9, because the moving element 9a is at least partially integrated formed on the electrode lead 7.
  • the electrode feed 7 has a bistable snap element which, when activated by heat, induces a movement of the electrode feed 7 and / or the electrode 6 and thus prevents deposition on both components.
  • Fig. 6 aspired by the moving element 9a, in particular a bistable snap element, is attached to the electrode lead 7 and serves as a receptacle for the electrode 6.
  • Fig. 7 schematically shows an embodiment in which a plurality of moving elements 9a, are fixed on the surface of the insulator 8 to the electrode lead 7, so that upon activation by heat also a movement of the electrode lead 7 and / or the electrode 6 is induced.

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  • Electrostatic Separation (AREA)

Claims (16)

  1. Collecteur électrostatique (1, 1') pour une conduite de gaz de combustion (2) d'un système de purification des gaz de combustion, comprenant un canal d'écoulement (3) muni d'une paroi de canal (4) et d'un intérieur de canal (5), à travers lequel s'écoulent des gaz de combustion (P) contenant des particules dans un sens d'écoulement, et une électrode (6) qui s'étend dans l'intérieur de canal (5) sensiblement dans le sens de l'écoulement (P) munie d'une arrivée d'électrode (7), destinée à former un champ électrique entre l'électrode (6) et la paroi de canal (4), au moins un moyen de rejet de particules (9, 9') étant en outre inclus pour éliminer les particules qui adhèrent à l'électrode (6), lequel empêche, en induisant une vibration dans l'électrode (6), que les particules des gaz de combustion (P) se déposent durablement sur l'électrode (6), caractérisé en ce que le moyen de rejet de particules (9, 9') est réalisé sous la forme d'un élément mobile à induction thermique (9a, 9a') qui est déplacé par l'arrivée/évacuation de chaleur lors de la mise en chauffe/de l'arrêt d'un four.
  2. Collecteur électrostatique (1, 1') selon la revendication 1, caractérisé en ce que le moyen de rejet de particules (9, 9') est réalisé sous la forme d'un élément mobile à induction thermique (9a, 9a') séparé.
  3. Collecteur électrostatique (1, 1') selon la revendication 1 ou 2, caractérisé en ce que l'élément mobile (9a, 9a') comprend un bilame façonné (10) en tant qu'élément d'entraînement, auquel est accouplé au moins un élément supplémentaire ou mécanisme supplémentaire (11) entraîné par le bilame (10).
  4. Collecteur électrostatique (1, 1') selon l'une des revendications 1 à 3, caractérisé en ce que l'élément mobile (9a, 9a') est réalisé sous la forme d'au moins un élément de butée (11) disposé espacé de l'électrode (6), lequel vient frapper contre l'électrode (6) par induction thermique lors de l'activation, ce qui empêche un dépôt de particules sur l'électrode (6).
  5. Collecteur électrostatique (1, 1') selon l'une des revendications 1 à 3, caractérisé en ce que l'élément mobile (9a, 9a') est réalisé au moins partiellement intégré avec l'électrode (6).
  6. Collecteur électrostatique (1, 1') selon l'une des revendications 1 à 5, caractérisé en ce que l'électrode (6) est réalisée au moins partiellement sous la forme d'un bilame (10) préestampé afin d'induire un mouvement de l'électrode (6) en présence d'un échauffement pouvant être prédéfini.
  7. Collecteur électrostatique (1, 1') selon la revendication 5 ou 6, caractérisé en ce que le bilame (10) possède au moins un, de préférence plusieurs préestampages.
  8. Collecteur électrostatique (1, 1') selon l'une des revendications 1 à 7, caractérisé en ce que l'électrode (6) possède un élément à enclenchement bistable qui, lors de l'activation par la chaleur, induit un mouvement de l'électrode (6) et empêche ainsi un dépôt.
  9. Collecteur électrostatique (1, 1') selon l'une des revendications 1 à 4 et 6 à 8, caractérisé en ce que l'élément mobile (9a, 9a') est réalisé au moins partiellement intégré à l'arrivée d'électrode (7).
  10. Collecteur électrostatique (1, 1') selon l'une des revendications 1 à 9, caractérisé en ce que l'arrivée d'électrode (7) possède un élément à enclenchement bistable qui, lors de l'activation par la chaleur, induit un mouvement de l'arrivée d'électrode (7) et/ou de l'électrode (6) et empêche ainsi un dépôt durable.
  11. Collecteur électrostatique (1, 1') selon l'une des revendications 1 à 10, caractérisé en ce que l'élément mobile (9a, 9a'), notamment un élément à enclenchement bistable, est fixé à l'arrivée d'électrode (7) et sert de logement pour l'électrode (6) .
  12. Collecteur électrostatique (1, 1') selon l'une des revendications 1 à 11, caractérisé en ce qu'au moins un élément mobile (9a, 9a'), notamment un élément à enclenchement bistable, est fixé sur la surface d'un isolateur (8) sur l'arrivée d'électrode (7).
  13. Collecteur électrostatique (1, 1') selon l'une des revendications 1 à 12, caractérisé en ce que l'élément mobile (9a, 9a'), notamment un élément à enclenchement bistable, est fixé dans la zone de l'arrivée de haute tension et/ou de la paroi de canal (4), en ce que l'élément mobile (9a, 9a') comprend un bilame façonné (10) en tant qu'élément d'entraînement, auquel est accouplé au moins un élément de butée (11) supplémentaire entraîné par le bilame (10), l'élément de butée (11) étant fixé avec un espacement par rapport à la surface de l'isolateur (8) sur l'arrivée d'électrode (7) et venant frapper contre l'isolateur (8) sur l'arrivée d'électrode (7) par induction thermique lors de l'activation et déclenchant une impulsion destinée à éliminer les particules déposées sur l'arrivée d'électrode (7) et l'électrode (6).
  14. Collecteur électrostatique (1, 1') selon la revendication 13, caractérisé en ce que l'élément mobile (9a, 9a'), le bilame façonné (10) qui l'inclut faisant office d'élément d'entraînement et/ou l'élément de butée (11) possèdent au moins environ la largeur et environ la longueur de l'isolateur (8) sur l'arrivée d'électrode (7) et sont montés en forme de toit sur le côté de l'arrivée d'électrode (7) qui fait face à l'électrode (6), de sorte que l'isolateur (8) est protégé par un écran des particules qui chutent.
  15. Collecteur électrostatique (1, 1') selon l'une des revendications 1 à 14, caractérisé en ce que l'électrode (6) et/ou l'arrivée d'électrode (7) possèdent une couche anti-adhérente.
  16. Système de chauffage destiné à produire de l'énergie par l'intermédiaire de la combustion d'une source d'énergie telle que la biomasse avec une installation de chauffage émettant des poussières fines, comme une installation de chauffage à biomasse, destinée à brûler la source d'énergie, des gaz de combustion contenant des particules étant produits, et comprenant un collecteur électrostatique (1, l') selon l'une des revendications 1 à 15.
EP09167687.4A 2008-08-18 2009-08-12 Séparateur électrostatique et système de chauffage Active EP2156895B1 (fr)

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DE200810038236 DE102008038236B4 (de) 2008-08-18 2008-08-18 Elektrostatischer Abscheider und Heizungssystem mit einem Elektroden-Partikelabweisemittel umfassend ein Bimetall

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DE102009023522B4 (de) * 2009-05-30 2013-08-14 Robert Bosch Gmbh Elektrostatischer Abscheider mit Partikelabweisemittel und Heizungssystem

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DE439693C (de) * 1925-06-21 1927-01-19 Siemens Schuckertwerke G M B H Verfahren und Einrichtung zur elektrischen Reinigung von Gasen
JPS57187050A (en) * 1981-05-14 1982-11-17 Toyota Motor Corp Electrostatic precipitator
US5421863A (en) * 1992-09-11 1995-06-06 Trion, Inc. Self-cleaning insulator for use in an electrostatic precipitator
JPH1047037A (ja) * 1996-07-29 1998-02-17 Teikoku Piston Ring Co Ltd 微粒子分離装置
CH695113A5 (de) 2000-10-02 2005-12-15 Empa Vorrichtung zur Rauchgasreinigung an Kleinfeuerungen.
DE10300549A1 (de) * 2003-01-09 2004-07-22 Riebel, Ulrich, Prof. Dr.-Ing. Vorrichtung zum Abreinigen von Elektroabscheidern und Verfahren zum Betreiben der Vorrichtung
ATE433348T1 (de) * 2004-06-29 2009-06-15 Empa Verfahren und steuerungseinheit zur regelung der betriebsspannung und zur verschleisskontrolle an einer vorrichtung für die elektrostatische partikelabscheidung in gasströmen
DE202007004263U1 (de) * 2007-02-16 2007-07-05 Otto Spanner Gmbh Elektrofilter
DE102008015616A1 (de) * 2008-03-26 2009-10-08 Robert Bosch Gmbh Elektrostatischer Abscheider mit Partikelabweisemittel und Heizsystem

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EP2156895A2 (fr) 2010-02-24
EP2156895A3 (fr) 2013-10-16
DE102008038236A1 (de) 2010-02-25

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