EP2091653B1 - Étage d'ionisation et collecteur pour installation d'épuration de gaz d'échappement - Google Patents

Étage d'ionisation et collecteur pour installation d'épuration de gaz d'échappement Download PDF

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Publication number
EP2091653B1
EP2091653B1 EP07846577A EP07846577A EP2091653B1 EP 2091653 B1 EP2091653 B1 EP 2091653B1 EP 07846577 A EP07846577 A EP 07846577A EP 07846577 A EP07846577 A EP 07846577A EP 2091653 B1 EP2091653 B1 EP 2091653B1
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EP
European Patent Office
Prior art keywords
gas flow
collector
electrode
downstream
conical
Prior art date
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EP07846577A
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German (de)
English (en)
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EP2091653A1 (fr
Inventor
Hanns-Rudolf Paur
Andrei Bologa
Klaus Woletz
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Karlsruher Institut fuer Technologie KIT
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Karlsruher Institut fuer Technologie KIT
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/41—Ionising-electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/06—Plant or installations having external electricity supply dry type characterised by presence of stationary tube electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—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
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/06—Ionising electrode being a needle

Definitions

  • the invention relates to the ionization stage and the collector of an emission control system for the removal of suspended matter from an exhaust gas stream.
  • the exhaust gas flow is guided in a channel to which the exhaust gas purification system is cultivated as a kind of final stage, from which the purified exhaust gas, the clean gas, is discharged into the environment, or in which the exhaust gas purification system is installed as an intermediate stage and the purified exhaust gas continues to flow in the channel ,
  • the exhaust duct leads to the ionization stage, in which an electrostatic charge of the particles / suspended matter takes place in order then to be deposited and removed downstream of the gas in the electric field-free collector.
  • Electrostatic precipitators wet electrostatic precipitators, as in US 4,247,307
  • exhaust gas purifying systems that separate suspended, solid or liquid particles from an exhaust gas flow are described, for example.
  • the separation process consists of the electric charge of suspended particles and the collection / deposition of the charged particles on the surface of collecting electrodes in an external electric field as well as the removal of the accumulated / deposited particles from the electrode surface.
  • the external electric field is generated between a corona discharge electrode and an electrode surface exposed to its reference potential, usually ground potential.
  • electrostatic precipitators for example in the US 4,449,159 described using the high intensity ionization stages for the electrostatic particle charge and a particle accumulation / deposition electrostatic deposition stage installed downstream of the high intensity ionization stage.
  • the deposition / collection of particles in the electrostatic precipitator stage occurs under the action of an external electrostatic field.
  • the speed in the high intensity ionization step is up to 50 m / s and the speed in the electrostatic Deposition does not exceed a few m / s. Details about the development of high intensity ionization steps are in M. Kearns, High Intensity Ionization Applied to Venturi Scrubbing, Journal of Air Pollution Control Association, April 1979, Vol. 29 No.4, pp. 383 - 385 described.
  • a known method and a known exhaust gas purifying system for ionizing gas, electrostatic charging of particles to get impurities from exhaust gas streams is also known in the art US 4,110,086 .
  • a venturi increases the velocity of contaminated gases and suffers the gas into an electrostatic field which is directed perpendicular to the gas stream and extends radially outwardly from a central, precisely positioned disk electrode to the exposed surface of the venturi throat. Downstream, the charged particles are collected in a wet scrubbing process or in an electrostatic precipitator. The speed in the ionization stage is high. In a wet washing unit or in an electrostatic precipitator, it is low.
  • the waste gas purification plant has a packed wet scrubber through which washing liquid, such as water, is vertically flowed downwards and through the gas to be purified.
  • washing liquid such as water
  • the packing material is exposed in a chamber.
  • the packing material and the washing liquid are kept electrically neutral.
  • a gas stream to be cleaned is ionized prior to its flow through the wet scrubber to provide particles in the gas stream with an electrical charge of predetermined polarity, usually negative.
  • the charged particles are brought into close contact with the scrubbing liquid and / or the packing elements due to the attractive forces between the charged particles and the electrically neutral packing elements and the scrubbing liquid.
  • the charged particles are removed from the gas stream and are from the scrubber to a discharge point in the washing liquid carried.
  • the particles are collected in an outer, electric field-free collector. The speed in the charge and collector stages is low and does not exceed several m / s.
  • the gas stream is first cooled and saturated with water vapor, then passed to the condensate collector through a grounded nozzle plate which provides the conical nozzle exit with an electrode space formed by the die exit area and high voltage electrode tips in which the gas expands and in the aerosol particle in the gas stream be charged by a corona discharge.
  • the gas stream is then directed to an area formed by grounded walls at which some of the charged particles are deposited and then passed through the interior of a bundle of grounded tubes to the walls of which more charged particles are deposited.
  • the speed of the gas flow in the charging stage can reach up to 50 m / s.
  • the speed in the outer, electric field-free collector does not exceed some m / s.
  • An ionization stage may consist of a grounded plate with several regular circular nozzles ( DE 10 2005 023 521 ), a high-voltage grid installed downstream of the gas grid, a plurality of rods mounted on the high-voltage grid, each with a star-shaped electrode at the free end, which are centrally exposed in a respective nozzle downstream gas flow direction perpendicular to the gas flow direction in the nozzle, one sleeve per nozzle such that the star-shaped electrode therein positioned in front of the exit of the sleeve.
  • the ionization stage can according to DE 10 2005 045 010 also be constructed such that the high-voltage grid with rods and star-shaped electrodes at the end, which project centrally into the sleeve-set nozzles of a grounded nozzle plate, is installed upstream of the nozzle plate.
  • An electrostatic precipitator operates on the principle of mutual repulsion of charged particles towards a grounded wall.
  • the particle-laden gas stream enters a collector zone in which additional particles in the form of droplets, usually water, are injected as a fine spray into the particle-laden gas stream.
  • the solid particles and the additional liquid particles become either a conventional corona or by injecting the droplets from a charged nozzle and, as the charged particles pass through the grounded portion of the separator, some of the water particles and the solid become the grounded wall by electric fields forced, which are caused by space charge.
  • Deposited solid particles are swept along in the drain water and discharged from the separator.
  • deposition stages may be present, or alternatively, methods such as continuously injecting additional particles into the collector along its length.
  • the charging of the particles of the gas stream in the corona occurs during the passage of the particle-laden gas stream through the space between the needle electrode and concentrically surrounding collector tube.
  • each collector tube protrudes the associated needle electrode and is directed with its free end downstream gas.
  • the spraying with droplets takes place via nozzles in front of the corona charging or by spraying pipes projecting into the collector tubes.
  • the particulate laden drain water runs down the collector walls and is directed out of the trap.
  • the collector tubes are about 1 m long and have a diameter of about 2.5 cm, the velocity of the gas flow is about 1 m / s.
  • the ionization stage is not spatially separated from the collector stage, they form a structural unit.
  • the principal problem of operating high intensity ionization stages is the space charge phenomenon downstream of the ionization stage.
  • the space charge leads to a preponderance of charged particles and ions within a portion of the chamber between the high intensity ionization exhaust gas purifier and the electrostatic exhaust gas purifier or outer field free collector.
  • When an excessive large accumulation of space charge ions occurs in the intermediate chamber of the high intensity ionization exhaust gas purifier there is a high probability of local discharge or neutralization of the charged particles by arcing or sparking to grounded supernatants within the intermediate chamber.
  • the space charge Without jeopardizing the collector plates of the electrostatic precipitator or the field-free grounded collector, the space charge has undesirable slopes: either to reduce the degree of charge or to cause accumulation of particles on available surfaces in the intermediate chamber.
  • the flow of such a charged particle cloud can build up inequalities within cause the charge cloud, which is detrimental to a more effective collection of the particles.
  • the space charge problem becomes more serious as the degree of charge on the space charge cloud
  • the location may be enhanced by means for restricting gas flow downstream of the high intensity ionization stage, e.g. Downstream of the conical openings of the high intensity ionization stage in the form of a unitary grid extending over the entire inlet area of the electrostatic precipitator, or alternatively an individual flow restrictor in each nozzle.
  • This flow restrictor / restrictor can be attached to the respective opening of the discharge cone of the high intensity ionizer.
  • the effective diameter of the flow restrictor is between 1/2 and 2 times the diameter of the cone discharge opening, preferably between 3 ⁇ 4 and 1 1 ⁇ 4 times.
  • the respective flow distribution means are carried by the rods and are each positioned with a gap to the associated conical opening.
  • the object underlying the invention namely to provide an exhaust gas purification system for high-intensity ionization and electrostatic precipitation for the removal of suspended particles from a gas stream, which Overcomes this problem and allows a highly effective gas cleaning, which can be attached to an exhaust duct or forms an intermediate piece of such.
  • An ionizer in an exhaust gas purification plant for drop-laden, condensing wet cheese described in US Pat DE 102 44 051 C1 , consists of an over the cross section of the flow channel mounted, electrically conductive, placed on an electrical reference potential nozzle plate with a regular in a concentric cross-sectional area over this cross-sectional area uniformly distributed array of circular nozzles.
  • a high-voltage electrode grid connects, which is concentric in the flow channel over the cross section and is anchored electrically isolated in the channel wall.
  • Each electrode pin is designed star-shaped at its free end and is opposed to the gas flow.
  • the nozzle plate and the assembly of high-voltage electrode grid, E-lektrodenite each with associated electrode tips are made of an inert for the process environment, electrically conductive material. The gas flow runs in the ionizer against gravity.
  • the construction principle of an exhaust gas purification system as a built-in section in a channel for gas guidance has according to the DE 10 2004 037 286 B3 a standing, U-shaped design.
  • one leg is the zone for ionization, the ionizer, the entrained in the gas particles / aerosols.
  • the junction zone which is a reservoir / vessel for the particulate matter precipitated from the gas stream, has at least at its lowest point a spout for discharging particulate-enriched liquid.
  • the collector zone which consists of at least one collector or in the flow direction of several successive panels.
  • the gas to be purified flows from above into the ionizer arm and downwards in the direction of gravitational attraction. It flows into the second leg from below and flows through the collector upwards, after which it emerges cleaned up.
  • nozzle plate On the nozzle plate are located downstream of gas to the highest localized over the local light cross section accumulated filter elements that are gas flow permeable flow throttling packed.
  • the polarity of the high voltage is technically straightforward, but depends on the most effective separation of the particles to be separated from the gas stream.
  • the filter elements are positioned in a localized manner via a gas downstream sleeve located at and around the edge of the nozzle plate and fastened to the housing wall via a nozzle plate close to the nozzle plate Basket or a laid net chaotic loosely or structured packed to keep the pressure drop of the gas flowing through low.
  • the structures of the packing / filter elements range from spherical, cylindrical, annular or conical structure and are hollow in weight or have perforated walls, so that the entire surface of such a packing is accessible.
  • the material must be process-suitable on a case-by-case basis and is made of a suitable plastic or metal, preferably light metal, or else coated plastic or coated metal (claim 10, see also www.rauschert.vt.de, Overview tower packing).
  • the holding, non-permeable filling elements basket or the filling elements impermeable net is also made of process-suitable material.
  • the cover of a sleeve electrode is hat-shaped: In another embodiment, the cover of the sleeve electrode / n is a cover which projects beyond the clear cross-section of the emission control system.
  • the nozzle plate In the nozzle plate is located in the deepest region or in the lowest areas at least one drain hole for the outflow of accumulated on the gasstromabissertigen side of the plate, particle-laden liquid.
  • the nozzle plate may be conical, wherein the cone height is smaller than the height of the sleeve electrode.
  • a spray device for spraying liquid of the gas stream is located in the collector downstream of the filter elements, the gas flow axis can be at an angle from the angular range of 0 and 180 ° to the diesstiksssprühachse.
  • the ionization stage and the collector can be at an angle from the angle range of 0 to 180 ° to each other with respect to the gas flow axis in the ionization stage and in the collector and thus the two associated areas of the housing.
  • the costs for the construction of the emission control system are lower than in conventional emission control systems, but in particular beyond the operating costs.
  • the emission control system impresses with its simple structure and thus easy operation as well as the easy, uncomplicated maintenance as well as the simple, easily accessible replacement of the components, which is important for maintenance.
  • the exhaust gas stream flows through the exhaust gas channel at a low speed into the exhaust gas purification system, enters the ionization stage and, due to the reduction in cross-section and the constancy of the mass flow rate, obtains a high speed in the ionization stage.
  • the entrained, suspended particles are charged in the outer electric field of the corona discharge between the star disk-shaped electrode and the inner wall of the sleeve.
  • the charged particles and ions form a space charge.
  • the charged particles move away from the ionization stage; the gas stream enters the electric field-free collector at almost the speed recorded in the ionization stage, which immediately downstream of the ionization stage downstream of the gas stream.
  • the collection of the charged particles takes place in the electric field-free collector under the influence of mechanical and electrostatic forces.
  • the gas flow can change the direction of its flow axis by the construction of the outer collector.
  • FIG. 1 shows a longitudinal axial section through the emission control system from the ionization stage 2, a Hochintensticiansionmaschinestress, HII, and the subsequent collector 3.
  • the emission control system is vertical, so that the gas flow within the housing 1 flows vertically upward therein.
  • the direction of the gas flow is indicated by the large arrows, black for the incoming exhaust and empty for the exiting purified gas, the clean gas.
  • the entire emission control system is with the exhaust gas inlet to a Exhaust duct mounted. From the collector 2, the clean gas exits into the open or into a secondary gas channel.
  • the Hochintensticiansionmaschinescut consists of lying generally on a reference potential, in particular, because technically most obvious and easy, the grounded nozzle plate 4 with the nozzle 5. sleeve elek floors 6 are installed in the nozzles 5. The detailed description of the nozzles 5 and the electrodes 6 is the DE 10 2005 023 521 refer to.
  • the high-voltage grid 7 is installed upstream in the housing of the emission control system over the clear cross section with insulators 8.
  • One of the insulators serves as a high voltage feedthrough which is connected to a voltage source, not shown here.
  • the high voltage insulators 8 (see DE 102 27 703 ) are protected against the moist / wet atmosphere inside the emission control system, eg by a cleaning flow with warm / hot air (see eg DE 101 32 582 , for example Fig. 1 ).
  • the high voltage electrode 10 in FIG. 2 is star-shaped, as in DE 10 2005 023 521 and is attached downstream of the gas at the free end of the bar support 11 mounted on the high-voltage grid 7.
  • the gas upstream conical sleeve 12 and the gas downstream conical sleeve 13 are fixed to the bar support 11.
  • the star-shaped electrode 10 is seated between the two conical sleeves 12, 13, which rest with their wide opening at her.
  • the tip 14 of the conical sleeve 13 is round, or rounded.
  • the sleeve electrode 6 is here gas downstream, ie at the flow outlet, with a cover for the gas flow at least obstacle-poor cover 15, a grid hatch 15, covered and sits directly on the edge of the sleeve electrode 6.
  • the star disk-shaped high-voltage electrode 10 is exposed longitudinally centrally and displaceably in the sleeve electrode 6.
  • the outside of the electric field sitting and thus electric field-free collector 3 houses the collector filter elements 16 z. B tower-packed filter elements.
  • the collector filter elements 16 sit electrically field-free gas downstream of the ionization stage between the sleeve electrodes 6 directly on the gasstromabissertigen side of the nozzle plate 4 and downstream gas on the grid hats 15 (see FIGS. 1a and 1b ).
  • the entry and exit edges of the sleeve electrodes 6 are rounded (see FIG. 5 with the two magnifications / subtleties).
  • the sleeve electrodes 6 are fixed to the nozzle plate 4 in or at their respective intended nozzle 5. They can be clamped quickly or they have additional sleeve flanges 16 and can be fixed with screws 17 on the nozzle plate 4 (see FIG. 6 ).
  • FIG. 6a the sleeve flange 16 is installed on the gas upstream side of the nozzle plate 4.
  • the sleeve flanges 16 are bolted to the nozzle plate 4 downstream. In the construction according to FIG. 6c The edges exposed in the nozzle space must be rounded.
  • the emission control system is further equipped with a device for the electrical discharge of liquid.
  • the liquid in question is the one which accumulates on the nozzle plate 4 downstream of the gas.
  • the nozzle plate 4 at at least one deep point a drain hole 18 to discharge the liquid (see FIG. 7 ).
  • the nozzle plate 4 may be conically shaped such that the tip of this cone is located centrally downstream of the gas ( FIG. 8 ).
  • the nozzles 5 are then equipped with the sleeve electrodes 6 that all sleeves 6 sit at an equal height to each other, so sitting radially outward less deep in the nozzle plate 4.
  • the height H np of the conical nozzle plate to the height H sh of the sleeve electrode must be in the following relation: H np ⁇ H sh .
  • the ionization stage can also be constructed in such a way that the grille hats 15, which are at ground potential, are replaced by a grid 19, preferably metallic, process-suitable material, which sits directly on the outputs of the sleeve electrodes 6 rests on ( FIG. 9 ).
  • the collector 3 of the emission control system may be provided with a further component 20, namely with a perforated plate, for example, which is installed over the clear cross-section and are on the filter elements 21, for example, tower-packed filter elements.
  • a perforated plate for example, which is installed over the clear cross-section and are on the filter elements 21, for example, tower-packed filter elements.
  • a grid or another porous component can be used, which also allows the gas flow to pass through at least with a small flow restriction.
  • the use of an additional support member 20 allows the exhaust gas purifier to be installed in the gas guide channel so that the gas flow therein goes down vertically, and then the filter elements 21 are upstream on the gas permeable support member 20.
  • the exhaust gas purification system can still be equipped with a liquid spray device 22, preferably water, in order to rinse the filter elements 21 of the collector 3, that is, particles.
  • a liquid spray device 22 is shown in FIG FIG. 12 shown.
  • the horizontal gas flow is sprayed in the collector 3 transversely from above and the particles suspended in the passage from the gas stream particles collected in the drip pan 23 and derived.
  • the collected, particle-enriched spray liquid can be recycled or purified in a liquid purifier. Both possibilities are not part of the invention and therefore in the FIG. 12 not shown.
  • the gas stream in the collector is liquid sprayed in cross-flow from above. That is an option.
  • Other possible directions of spraying are countercurrent, co-current and vertical from below.
  • the procedure for the removal of fine particles from a gas stream consists of the introduction of the exhaust gas flow into the exhaust gas purification system in that the same to the Flanged exhaust duct and so the continuation of the channel forms the housing 1 of the emission control system.
  • the exhaust gas flow enters the ionization stage 2 at low speed and flows at high speed through the nozzles 5 with sleeve electrode 6 and star-axial electrode 10 exposed longitudinally axially centered on both sides conical configuration 12 and 13, whose fine particles in the field between these two electrodes. 6 and 10 are charged by a corona discharge.
  • FIG. 13 changes the gas flow axis their direction in the collector 3, as indicated by the upward right angle bent arrow.
  • the initially horizontal exhaust gas flow also flows in comparison to the passage velocity through the nozzles 5 at low speed in the FIG. 13 from the left into the emission control system and flows due to the cross-section narrowing nozzles with a correspondingly increased speed of up to 50 m / s through the ionization stage 2, in which the electrical particle charge and ionization is effected.
  • the gas stream enters the gas downstream from the ionization stage 2 directly into the horizontal part / section I of the collector 3 with the recorded in the ionization stage 2 high speed, which decreases again in the course.
  • This part I is in FIG. 13 as in FIG.
  • This second section II of the collector 3 also contains filter elements 26 which are stationary or seated on a built-in over the clear housing cross section perforated plate 25 or such a grid 25. This / s plate / grid 25 sits in the right extension of the lower horizontal housing wall.
  • the housing wall of Part II is extended downwards and closed with a drip pan 27 for the dripping, particle-enriched liquid droplets.
  • Also in this second part II of the collector 3 can be installed downstream of the gas further remplisstechnikströpfchensprüh driven with which the cleaning effect is further increased. The clean gas exits from the collector 3 upwards.
  • FIG. 14 Another construction variant of the emission control system is in FIG. 14 shown.
  • the collector 3 is perpendicular to its gas flow axis, the clean gas escapes upwards.
  • the collector 3 is like the second part II in FIG. 13 built up. But now the ionization stage 2 projects from the left housing wall into the collector 3.
  • the gas flow axis is directed vertically from the left. Thus, the gas flow axis also bends vertically upward after exiting the ionization stage.
  • the cleaning process of the gas stream, or the sequence of the particle excretion is the same as that of the FIG. 1a or FIG. 13 described.
  • the corona discharge forms at the tips of the star-disc-shaped electrode 10 here.
  • a DC voltage with negative polarity is applied.
  • the polarity can also be positive. The choice of polarity depends on the better cleaning / deposition effect for different types of particles.
  • between these two electrodes 6 and 10 is technically easy and an alternating field on the application of a high alternating voltage possible. Even a pulse-shaped corona discharge comes as an ionization method into consideration.

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  • Electrostatic Separation (AREA)

Claims (10)

  1. Etage d'ionisation et collecteur d'une installation de nettoyage de gaz d'échappement équipant un conduit de gaz d'échappement ou monté dans un conduit de gaz d'échappement, comprenant :
    - un boîtier (1),
    celui-ci est monté par l'intermédiaire de l'étage d'ionisation (2) installé dans la section libre du boîtier pour charger les particules, cet étage ayant une plaque (4) mise à un potentiel électrique de référence, la plaque à buse (4) ayant au moins une buse à très grande vitesse (5) formée d'une électrode à manchon (6) mise à ce potentiel de référence,
    - une électrode haute tension (10) en forme de disque étoilé, exposée en position centrale dans la buse (5) perpendiculairement à l'axe du flux de gaz, et dont la zone d'extrémité libre est munie d'un support (11) en forme de tige électroconductrice, installée sur la grille (7) à haute tension placée en amont de la veine des gaz,
    - un collecteur (3) en aval de l'étage d'ionisation (2),
    caractérisés par les caractéristiques suivantes :
    - un premier manchon conique (12) à section convexe, dont toute la face du pied est appliquée en amont contre l'électrode haute tension (10),
    - un second manchon conique (13) de section convexe, dont le pied est également appliqué contre l'électrode haute tension (10), en aval dans la veine des gaz,
    - un moyen de recouvrement (15, 19) fermant, côté aval dans la veine de gaz, l'électrode en forme de manchon (6), ce moyen de recouvrement étant en un matériau électroconducteur avec une structure perméable à la veine des gaz,
    - un collecteur (3) directement adjacent à l'étage d'ionisation en aval dans la veine des gaz, ce collecteur se composant d'organes de remplissage comme éléments de filtre (16), organes accumulés sur la plaque de buse (4) en aval dans la veine des gaz d'échappement, localisés au maximum jusqu'au-delà de la section libre à cet endroit.
  2. Etage d'ionisation et collecteur selon la revendication 1,
    caractérisés en ce que
    les éléments de filtre (16) sont localisés par un manchon (6) dirigé vers l'aval dans la veine des gaz d'échappement, appliqué sur et autour du bord de la plaque de buse (4), les éléments de filtre sont empilés ou disposés suivant une forme conique.
  3. Etage d'ionisation et collecteur selon la revendication 2,
    caractérisés en ce que
    le moyen de recouvrement (15) a la forme d'un chapeau d'électrode en forme de manchon (6).
  4. Etage d'ionisation et collecteur selon la revendication 3,
    caractérisés en ce que
    le moyen de recouvrement de la ou des électrodes en forme de manchon (6) est un moyen de recouvrement (19) qui dépasse la section libre de l'installation de nettoyage des gaz d'échappement.
  5. Etage d'ionisation et collecteur selon l'une des revendications 3 et 4,
    caractérisés en ce que
    dans la zone la plus profonde dans la plaque de buse (4) ou dans les zones les plus profondes de celle-ci, il est prévu au moins un orifice de sortie pour le liquide chargé de particules et accumulé sur le côté aval de la plaque (4) dans la veine des gaz d'échappement.
  6. Etage d'ionisation et collecteur selon la revendication 5,
    caractérisés en ce que
    la plaque de buse (4) est de forme conique et la hauteur du cône est inférieure à la hauteur de l'électrode en forme de manchon (6).
  7. Etage d'ionisation et collecteur selon la revendication 6,
    caractérisé en ce que
    la hauteur du second manchon conique (13) est inférieure ou égale au double de la plus petite largeur d'intervalle L entre l'électrode de haute tension (10) en forme de disque étoilé et, l'électrode en forme de manchon (6) correspondante.
  8. Etage d'ionisation et collecteur selon la revendication 7,
    caractérisés en ce qu'
    en aval des éléments de filtre (16) dans la veine des gaz d'échappement dans le collecteur (3), il y a une installation de nettoyage des gaz d'échappement pour pulvériser du liquide dans la veine des gaz d'échappement, et l'axe de la veine des gaz d'échappement fait, avec l'axe de pulvérisation du liquide, un angle compris dans une plage angulaire entre 0° et 180°.
  9. Etage d'ionisation et collecteur selon la revendication 8,
    caractérisés en ce que
    l'axe de la veine des gaz d'échappement dans l'étage d'ionisation (2) fait avec les zones du boîtier dans le collecteur (3) et ainsi les deux zones correspondantes du boîtier, un angle dans une plage angulaire comprise entre 0° et 180°.
  10. Etage d'ionisation et collecteur selon l'une des revendications précédentes,
    caractérisés en ce que
    les organes de remplissage ont une structure de bille ou une structure d'anneau ou une structure de cône annulaire et ils sont en un matériau traité, en métal ou en matière plastique.
EP07846577A 2006-11-24 2007-11-14 Étage d'ionisation et collecteur pour installation d'épuration de gaz d'échappement Not-in-force EP2091653B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006055543A DE102006055543B3 (de) 2006-11-24 2006-11-24 Ionisierungsstufe und Kollektor einer Abgasreinigungsanlage
PCT/EP2007/009823 WO2008061653A1 (fr) 2006-11-24 2007-11-14 Étage d'ionisation et collecteur pour installation d'épuration de gaz d'échappement

Publications (2)

Publication Number Publication Date
EP2091653A1 EP2091653A1 (fr) 2009-08-26
EP2091653B1 true EP2091653B1 (fr) 2010-03-24

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EP07846577A Not-in-force EP2091653B1 (fr) 2006-11-24 2007-11-14 Étage d'ionisation et collecteur pour installation d'épuration de gaz d'échappement

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EP (1) EP2091653B1 (fr)
AT (1) ATE461749T1 (fr)
DE (2) DE102006055543B3 (fr)
WO (1) WO2008061653A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007047250B8 (de) 2007-10-02 2009-09-03 Forschungszentrum Karlsruhe Gmbh Bauliche Struktur von Abgasreinigungsanlagen
EP2189223A1 (fr) * 2008-11-20 2010-05-26 Fachhochschule Gelsenkirchen Filtre électrique à nettoyage humide destiné au nettoyage des gaz d'échappement et procédé correspondant
CN113117429A (zh) * 2019-12-31 2021-07-16 珠海六和节能投资有限公司 一种工业锅炉的烟气处理装置及方法
CN116351220B (zh) * 2023-03-15 2023-09-12 芯朋半导体科技(如东)有限公司 一种焊接废气处理设备及处理方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1992113A (en) * 1931-10-26 1935-02-19 Int Precipitation Co Electrical precipitating apparatus
US2409579A (en) * 1944-06-16 1946-10-15 Research Corp Composite electrode
DE10132582C1 (de) * 2001-07-10 2002-08-08 Karlsruhe Forschzent Anlage zum elektrostatischen Reinigen von Gas und Verfahren zum Betreiben derselben
DE10244051C1 (de) * 2002-09-21 2003-11-20 Karlsruhe Forschzent Ionisator und seine Verwendung in einer Abgasreinigungsanlage für tropfenbeladene und/oder kondensierende Feuchtgase
DE102004037286B3 (de) * 2004-07-31 2005-08-11 Forschungszentrum Karlsruhe Gmbh Bauprinzip einer Abgasreinigungsanlage und Verfahren zum Reinigen eines Abgases damit
DE102005023521B3 (de) * 2005-05-21 2006-06-29 Forschungszentrum Karlsruhe Gmbh Nasselektrostatische Ionisierungsstufe in einer elektrostatischen Abscheideeinrichtung
DE102005045010B3 (de) * 2005-09-21 2006-11-16 Forschungszentrum Karlsruhe Gmbh Elektrostatische Ionisierungsstufe in einer Abscheidungseinrichtung

Also Published As

Publication number Publication date
EP2091653A1 (fr) 2009-08-26
DE102006055543B3 (de) 2008-01-24
WO2008061653A1 (fr) 2008-05-29
DE502007003248D1 (de) 2010-05-06
ATE461749T1 (de) 2010-04-15

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