EP1604742B1 - Gas supply for electrostatic precipitator and electrostatic precipitator - Google Patents

Gas supply for electrostatic precipitator and electrostatic precipitator Download PDF

Info

Publication number
EP1604742B1
EP1604742B1 EP04013364A EP04013364A EP1604742B1 EP 1604742 B1 EP1604742 B1 EP 1604742B1 EP 04013364 A EP04013364 A EP 04013364A EP 04013364 A EP04013364 A EP 04013364A EP 1604742 B1 EP1604742 B1 EP 1604742B1
Authority
EP
European Patent Office
Prior art keywords
vortex
gas
arrangement
flow
gas feed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04013364A
Other languages
German (de)
French (fr)
Other versions
EP1604742A1 (en
Inventor
Thomas Davis
Stefan Leser
Michael Kaatz
Hans Ruscheweyh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balcke Duerr GmbH
Original Assignee
Balcke Duerr 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 Balcke Duerr GmbH filed Critical Balcke Duerr GmbH
Priority to ES04013364T priority Critical patent/ES2351980T3/en
Priority to DE502004011737T priority patent/DE502004011737D1/en
Priority to SI200431545T priority patent/SI1604742T1/en
Priority to PT04013364T priority patent/PT1604742E/en
Priority to AT04013364T priority patent/ATE483524T1/en
Priority to DK04013364.7T priority patent/DK1604742T3/en
Priority to PL04013364T priority patent/PL1604742T3/en
Priority to EP04013364A priority patent/EP1604742B1/en
Priority to US10/910,638 priority patent/US6964698B1/en
Priority to CN200510007500A priority patent/CN100577301C/en
Priority to ZA200504241A priority patent/ZA200504241B/en
Priority to CA002508257A priority patent/CA2508257C/en
Priority to TW094117132A priority patent/TWI291372B/en
Priority to AU2005202330A priority patent/AU2005202330B2/en
Priority to MXPA05005879A priority patent/MXPA05005879A/en
Priority to RU2005117219/12A priority patent/RU2298438C2/en
Priority to UAA200505390A priority patent/UA80165C2/en
Priority to KR1020050048599A priority patent/KR100722341B1/en
Priority to JP2005167283A priority patent/JP4390746B2/en
Publication of EP1604742A1 publication Critical patent/EP1604742A1/en
Application granted granted Critical
Publication of EP1604742B1 publication Critical patent/EP1604742B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
    • B03C3/013—Conditioning by chemical additives, e.g. with SO3
    • 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
    • B03C3/36—Controlling flow of gases or vapour

Definitions

  • the invention relates to a gas supply for an electrostatic precipitator according to the preamble of claim 1 and an electrostatic filter device comprising an electrostatic precipitator and a gas supply.
  • Electrostatic precipitators are used, inter alia, in incinerators, power plants, or in industrial plants with furnaces such as cement, lime, gypsum, iron, or steelmaking, for difficult-to-deposit solid articles such as fine dust particles from an air, flue gas, or more generally to filter out a gas flow.
  • the gas flow is passed through an electric field in which accumulate electrons released by electrodes to the dust particles, migrate together with the dust particles in the direction of precipitation electrodes and deposited there.
  • an electrostatic filter For an electrostatic filter to be able to clean the gas in the greatest possible degree of efficiency, it must be flowed through or flowed through as uniformly as possible. A non-optimal flow leads to an uneven distribution of the dust, the temperature or the flow velocity in the gas flow, resulting in a reduced degree of separation and thus a non-optimal cleaning effect. Also, due to these uneven flow distributions can easily form particle deposits that gradually reduce the flow area of the electrostatic precipitator and lower its efficiency.
  • an electrostatic filter device usually has a gas supply arranged in front of the electrostatic filter, which directs the gas to be filtered as uniformly as possible to and into the filter.
  • the gas supply generally comprises a flow channel through which the gas flows in the direction of the filter, and a gas inlet hood which widens in a funnel shape from the inflow channel in the opposite direction to the electrostatic filter.
  • the gas inlet hood thus has a small cross-sectional area at its forward cross section in the flow direction, which corresponds to that of the inflow channel, and at its in the flow direction behind lying cross-section on a large cross-sectional area, which corresponds substantially to that of the electrostatic precipitator.
  • At least one flow distributor is normally arranged in the gas supply directly in front of the electrostatic precipitator in the widened region of the gas inlet hood.
  • These flow distributors are usually gas distribution devices in the form of perforated plates, which are often arranged in several layers one behind the other.
  • conditioning agents are mixed into the gas stream in the gas feed with the aid of an admixing device. This is once a cooling conditioning in which water is sprayed into the gas flow to cool the gas. Often, the gas is conditioned without lowering the gas temperature by SO 3 , NH 3 , water vapor or the like, among other things, to reduce the electrical dust resistance are injected into the gas to be filtered.
  • the admixing device usually has a plurality of nozzles arranged in the gas supply.
  • the invention is therefore based on the object to improve the efficiency of electrostatic filter devices.
  • the invention initially relates to the gas supply for an electrostatic precipitator of an electrostatic precipitator device, since, according to studies by the inventor, particularly great potential for improvement with regard to the efficiency of the electrostatic precipitator device is present especially in the region of the supply of the gas to the filter.
  • This is a generally known gas supply, which has a Anströmkanal with a constant cross-sectional area, a gas inlet hood with in the direction of the electrostatic filter alsweitender cross-sectional area and a Zumischvoriques for a conditioning agent.
  • At least one flow distributor is arranged in the expanded cross-sectional area.
  • the gas supply according to the invention now differs from the known gas feeds in that a first vortex vortex generating vortex device in the inflow, a second vortex vortex generating vortex device in the gas inlet hood in the gas flow direction in front of the flow distributor and the admixing device in the region of one of the two vortexers is arranged.
  • These vortex devices are basically known mounting elements, as described, for example, in US Pat EP 0638732 A1 have already been described for a diffuser.
  • Vortices also referred to as wake vortices
  • wake vortices can be thought of as small tornadoes directed in the direction of flow, the diameters of which increase in the direction of flow.
  • the vortices rotate from the side edges of the vortex device initially outward and then roll inward, causing opposite vortex rotate in opposite directions. If one looks downstream on such a vortex device, then the leading edge vortices look like two worms rolling in opposite directions.
  • leading edge vortices have the advantage that they are extremely stable vortex systems, which lead to a particularly effective mixing of the gas flow. This makes it possible that a largely uniform turbulent flow behavior forms behind such a vortex device that adjusts almost independently of the amount of gas flowing straight through. Thus, such vortex devices do not have to be constantly adapted to fluctuating gas quantities.
  • static mixers Because of these good mixing properties, the vortex vortex generating vortex devices have been used, in particular in diffusers, to completely replace conventional deflectors, baffles or perforated plates used for flow distribution or deflection.
  • the vortex devices are now also used in the extremely expanding gas inlet hood of a gas supply for an electrostatic precipitator, but different than before not used to completely replace the flow-distributing mounting elements, ie flow distributor, but only to improve their flow at least partially.
  • the vortex devices due to their obliquely arranged in the flow direction arrangement, the vortex devices have only a very small projection surface in the flow direction with a high turbulence effect, whereby the pressure losses are greatly reduced.
  • the strong turbulence results in the particles moving strongly and no longer depositing as easily as before. The turbulence at the same time dust strands are dissolved and distributed, so that the dust particle distribution is made uniform.
  • the flow distribution to the electrostatic precipitator can already take place with a single perforated sheet layer. This reduces the mounting surfaces in the gas supply, and the efficiency of the electrostatic precipitator or the electrostatic precipitator device is significantly increased overall, while the basically estimated advantageous flow of the electrostatic precipitator can be maintained via a perforated plate.
  • the gas supply according to the invention is characterized in that a vortex device is arranged in the inflow channel with at least approximately constant cross section.
  • a vortex device is arranged in the inflow channel with at least approximately constant cross section.
  • the preferred arrangement of the first vortex device in the inflow channel produces a sufficiently advantageous flow distribution, especially in the case of electrostatic precipitators, when a further vortex device and a flow distributor, ie a perforated plate, subsequently follow.
  • This makes it possible, for example, with the aid of simple or conventional baffles to direct the already basically turbulent and well-mixed gas flow in the gas inlet hood in the direction of the flow distributor, which then ensures the uniform flow through the electrostatic precipitator.
  • the admixing device is arranged in the region of one of the two vortex devices. So you can use the powerful leading edge vortex for effective mixing of a conditioning agent in the gas stream. Due to the flow direction Spreading leading edge eddy systems thus results in a punctual injection particularly good mixing of the conditioning over the flow cross-section away.
  • the first vortex device is arranged in the main flow direction in front of a curvature of the inflow channel. This has the advantage that the first vortex device is also used for deflecting the gas flow in the direction of curvature of the inflow channel.
  • the first vortex device is expediently closer to the inner side of the inflow duct than to its outer side of curvature, that is to say arranged asymmetrically on the inner side of the curvature with respect to the center of the inflow channel.
  • the flow on the inside of an increased flow energy is supplied, which enables the flow to better follow the sharp deflection of the inner edge.
  • the second vortex device it is thus possible to achieve a virtually separation-free deflection in the filter hood, which significantly improves the flow distribution.
  • the first vortex device can be arranged at an angle in the inflow channel in such a way that the leading edge of its at least one inflow surface faces the gas flow in the direction of the curvature inside and the trailing edge points toward the curvature outside of the inflow channel.
  • the first vortex device is arranged at an angle in the inflow channel, so that the inflow edge of its facing the gas flow has at least one inflow surface in the direction of the curvature outside and the trailing edge to the curvature inside of the inflow channel.
  • the leading edge is the edge of the vortex device, which faces the gas flow and the trailing edge is the edge which faces away from the flow.
  • Vorderkantenwirbelsystem results in the trailing edge, which extends very far in the region of the curvature outside of the inflow channel.
  • the second vortex device is arranged in a lower region of the gas inlet hood.
  • the air flow diverted in the horizontal direction due to a curvature is again passed through the second vortex device steered in a more horizontal direction.
  • the vortex device thus serves not only as a means for mixing but also as a deflection.
  • the second vortex device is arranged at an acute angle to a wall of the gas inlet hood.
  • An acute angle is understood to mean an angle of less than 45 ° and more than 0.5 °.
  • the admixing device opens behind the leading edge of a vortex device.
  • very simple Zumischvorraumen can be used, such as a simple pipe socket, which opens behind the leading edge of a vortex device. Due to the forming at the leading edge strong and widening in the flow direction vortices vortex, so there is a very good mixing of exiting through the pipe stub conditioning with the gas flowing past even with only selective admixture.
  • embodiments are expedient in which the admixing device is attached directly to the vortex device.
  • a whirling device should have at least one vertebral disc.
  • Spinal discs are well known and can be circular, elliptical, rectangular or even delta-wing-shaped, with discs in straight or kinked embodiment or in triangular or teardrop-shaped cross-sectional embodiments are suitable.
  • a vortex device has a plurality of side-by-side arranged in a flow cross-section vertebrae.
  • the vertebrae can be linked together or individually attached to the wall individually.
  • Also can be formed like a chain around the entire cross-section running vortex devices. This means that in each case at least one vortex disc is arranged at the top, bottom, left and right in the case of a rectangular inflow channel.
  • a vortex device preferably has a plurality of cascading arranged vortex discs.
  • Cascading here means a functional sequence of successively arranged vertebral discs. These thus represent a staircase-shaped image again, with obliquely or diagonally offset arrangements of the individual vertebrae are conceivable. It is only important that the gas flow is forwarded from one vortex disc to the next, whereby an optimal induction effect occurs.
  • a whirling device comprises a system of several intervertebral discs.
  • a vortex plate system may for example consist of a plurality of vortex discs, which are arranged on a common pivot axis.
  • several vertebrae can be changed together in a mutually firmly defined functional relationship in their mode of action, for example by turning or pivoting.
  • an electrostatic filter device having an electrostatic precipitator and a gas supply according to one of the previously described embodiments and further developments.
  • This electrostatic precipitator device is characterized in particular by the use of intervertebral discs in the manner described above, resulting in the advantages already described in the preceding embodiments of the gas supply.
  • the electrostatic filter device 1 has an electrostatic precipitator 2, a gas inlet 3 and a gas outlet 4.
  • the gas supply 3 is flowed through during operation of the electrostatic filter device 1 by a gas stream 5 to be filtered, which deflects it from a vertical to a substantially horizontal direction and on directs the filter 2.
  • the gas stream 5 to be filtered is then freed of particles contained therein by the electrical processes already explained above and exits via the gas outlet 4 as a filtered gas stream 6 from the electrostatic filter device 1.
  • the gas supply 3 thus includes in the embodiment shown here a vertical inflow channel 7 with a substantially constant flow cross-section. At the inflow duct 7, a curvature 9 of the inflow channel adjoins in the main flow direction. In this case, the gas flow 5 to be filtered changes its flow direction from a vertical to a horizontal direction.
  • the curved Anströmkanalabites 9 then follows the gas inlet hood 8, which widens in the direction of the filter 2 in its cross section.
  • the flow distributor 10 which is a simple perforated plate here.
  • both vortex devices are each a single circular vortex plate that has an inflow surface 13 on its side facing the gas flow.
  • the inflow surface 13 in this case connects the upstream directed inflow edge 14 and the downstream spoiler edge 15.
  • the first vortex plate 11 is arranged in front of the curvature 9 so that the inflow surface 13 extends in the flow direction from the curvature outer side 21 to the curvature inner side 22 of the curvature 9.
  • the curvature outside 21 is thus the obliquely upward-standing plate, while the curvature inside 22 corresponds to the corner or the transition between inflow channel 7 and gas inlet cap 8.
  • the first vortex plate 11 is arranged so that the leading edge 14 is directed downward, ie against the gas flow to be filtered 5, and the tear-off edge 15 faces upward.
  • the inflow surface 13 thus extends in the illustrated longitudinal section of the leading edge 14 obliquely upward to the trailing edge 15th
  • baffles 18 For uniform deflection of the gas flow 5 from the vertical in the direction of the horizontal are located in the gas inlet hood 8 at the top of baffles 18 conventional curved design. They merely supplement the change in direction of the gas flow already generated by the vortex device 11 and in particular do not serve to swirl.
  • a pipe stub 19 is arranged in the inflow duct 7, specifically in the region of the inflow edge 14 of the first vortex plate 11, through which a conditioning agent 20 can be injected into the inflow channel. Due to the strong turbulence of the gas flow in the downstream spreading vortex 16 so there is a particularly good mixing of the gas with the conditioning agent 20, so that a complex Mehrdüsige admixing can be omitted. This lowers flow resistance and manufacturing costs and makes the admixing device 19 less prone to disturbances resulting, for example, from dust deposits.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrostatic Separation (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Filtering Materials (AREA)
  • Ventilation (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Pipe Accessories (AREA)

Abstract

A vortex arrangement (11) that generates a leading edge vortex (16) is arranged in the incoming flow channel (7). A secondary vortex arrangement (12) that generates a separate leading edge vortex (17) is arranged in the gas inlet hood (8) ahead of the flow distributor (10) in the direction of gas flow. An admixture arrangement (19) is arranged near the vortex arrangements. An independent claim is also included for an electrostatic filter arrangement.

Description

Die Erfindung betrifft eine Gaszuführung für einen Elektrofilter gemäß dem Oberbegriff des Anspruchs 1 und eine Elektrofiltervorrichtung, die einen Elektrofilter und eine Gaszuführung aufweist.The invention relates to a gas supply for an electrostatic precipitator according to the preamble of claim 1 and an electrostatic filter device comprising an electrostatic precipitator and a gas supply.

Elektrofilter werden unter anderem in Müllverbrennungsanlagen, Kraftwerken oder in der Industrie in Produktionsanlagen mit Feuerungen wie etwa bei der Zement, Kalk, Gips, Eisen oder Stahlherstellung verwendet, um schwierig abzuscheidende Festkörperartikel wie zum Beispiel feine Staubpartikel aus einer Luft-, Rauchgas- oder ganz allgemein einer Gasströmung heraus zu filtern. Dazu wird die Gasströmung durch ein elektrisches Feld geleitet, in dem sich von Elektroden freigesetzte Elektronen an die Staubpartikel anlagern, zusammen mit den Staubpartikeln in Richtung von Niederschlagselektroden wandern und dort abgeschieden werden.Electrostatic precipitators are used, inter alia, in incinerators, power plants, or in industrial plants with furnaces such as cement, lime, gypsum, iron, or steelmaking, for difficult-to-deposit solid articles such as fine dust particles from an air, flue gas, or more generally to filter out a gas flow. For this purpose, the gas flow is passed through an electric field in which accumulate electrons released by electrodes to the dust particles, migrate together with the dust particles in the direction of precipitation electrodes and deposited there.

Damit ein Elektrofilter das Gas in einem größtmöglichen Wirkungsgrad reinigen kann, muss er möglichst gleichmäßig angeströmt bzw. durchströmt werden. Eine nicht optimale Anströmung führt zu einer ungleichmäßigen Verteilung des Staubs, der Temperatur oder der Strömungsgeschwindigkeit in der Gasströmung, was einen verminderten Abscheidegrad und somit eine nicht optimalen Reinigungswirkung nach sich zieht. Auch können sich aufgrund dieser ungleichmäßigen Strömungsverteilungen sehr leicht Partikelablagerungen bilden, die den Strömungsquerschnitt des Elektrofilters nach und nach verringern und seinen Wirkungsgrad absenken.For an electrostatic filter to be able to clean the gas in the greatest possible degree of efficiency, it must be flowed through or flowed through as uniformly as possible. A non-optimal flow leads to an uneven distribution of the dust, the temperature or the flow velocity in the gas flow, resulting in a reduced degree of separation and thus a non-optimal cleaning effect. Also, due to these uneven flow distributions can easily form particle deposits that gradually reduce the flow area of the electrostatic precipitator and lower its efficiency.

Daher weist eine Elektrofiltervorrichtung üblicherweise eine vor dem Elektrofilter angeordnete Gaszuführung auf, die das zu filternde Gas möglichst gleichmäßig zum und in den Filter leitet. Die Gaszuführung umfasst in der Regel einen Anströmkanal, durch den das Gas in Richtung des Filters strömt, und eine sich vom Anströmkanal etwa umgekehrt trichterförmig zum Elektrofilter hin aufweitende Gaseintrittshaube. Die Gaseintrittshaube weist also an ihrem in Strömungsrichtung vorne liegenden Querschnitt eine kleine Querschnittsfläche auf, die der des Anströmkanals entspricht, und an ihrem in Strömungsrichtung hinten liegenden Querschnitt eine große Querschnittsfläche auf, die im Wesentlichen der des Elektrofilters entspricht.Therefore, an electrostatic filter device usually has a gas supply arranged in front of the electrostatic filter, which directs the gas to be filtered as uniformly as possible to and into the filter. The gas supply generally comprises a flow channel through which the gas flows in the direction of the filter, and a gas inlet hood which widens in a funnel shape from the inflow channel in the opposite direction to the electrostatic filter. The gas inlet hood thus has a small cross-sectional area at its forward cross section in the flow direction, which corresponds to that of the inflow channel, and at its in the flow direction behind lying cross-section on a large cross-sectional area, which corresponds substantially to that of the electrostatic precipitator.

Um die Anströmung des Filters zu vergleichmäßigen, ist in der Gaszuführung normalerweise unmittelbar vor dem Elektrofilter im aufgeweiteten Bereich der Gaseintrittshaube wenigstens ein Strömungsverteiler angeordnet. Bei diesen Strömungsverteilern handelt es sich üblicherweise um Gasverteilungsvorrichtungen in Form von Lochblechen, die oft in mehreren Lagen hintereinander angeordnet werden.In order to even out the flow of the filter, at least one flow distributor is normally arranged in the gas supply directly in front of the electrostatic precipitator in the widened region of the gas inlet hood. These flow distributors are usually gas distribution devices in the form of perforated plates, which are often arranged in several layers one behind the other.

Zur weiteren Verbesserung der Filterleistung oder um überhaupt erst die zur Filtration notwendigen Bedingungen im zu filternden Gas zu schaffen, werden in der Gaszuführung mit Hilfe einer Zumischvorrichtung Konditioniermittel in den Gasstrom gemischt. Dabei handelt es sich einmal um eine abkühlende Konditionierung, bei der Wasser zur Kühlung des Gases in die Gasströmung gesprüht wird. Oft wird das Gas auch ohne Absenkung der Gastemperatur konditioniert, indem SO3, NH3, Wasserdampf oder ähnliches unter anderem zur Reduktion des elektrischen Staubwiderstandes in das zu filternde Gas eingespritzt werden. Um eine möglichst gleichmäßige Zumischung zu erreichen, weist die Zumischvorrichtung in der Regel eine Vielzahl von in der Gaszuführung angeordneten Düsen auf.To further improve the filter performance, or even to create the conditions necessary for filtration in the gas to be filtered, conditioning agents are mixed into the gas stream in the gas feed with the aid of an admixing device. This is once a cooling conditioning in which water is sprayed into the gas flow to cool the gas. Often, the gas is conditioned without lowering the gas temperature by SO 3 , NH 3 , water vapor or the like, among other things, to reduce the electrical dust resistance are injected into the gas to be filtered. In order to achieve the most uniform admixture, the admixing device usually has a plurality of nozzles arranged in the gas supply.

Im Dokument US-A-5 630 367 ist in Fig. 2 eine Verwirbelungsplatte (30) und in Fig. 4 eine Anordnung aus einer Lochplatte (32) im Abstand (35) vor Mündungen von Rohren (33) vorgesehen um Staub aus einem Rauchgas auszuscheiden und einem Speicher (20) zuzuführen. Zwar ist im Zusammenhang mit der Verwirbelungsplatte (30) bzw. der Lochplatte (32) von Wirbeln die Rede, aber diese Wirbel sollen ganz offensichtlich Staub aus dem durchströmenden Rauchgas abscheiden, aber auf keinen Fall eine gute Durchmischung des Rauchgases mit dem mitgeführten Staub herbeiführen.In the document US-A-5 630 367 in Fig. 2 is a swirling plate (30) and in Fig. 4 is an arrangement of a perforated plate (32) at a distance (35) from mouths of pipes (33) provided to separate out dust from a flue gas and a memory (20). Although in connection with the Verwirbelungsplatte (30) or the perforated plate (32) of eddies, but these vortexes are obviously dust from the flowing flue gas, but in no case bring about a good mixing of the flue gas with the entrained dust.

Diese bekannten Elektrofiltervorrichtungen haben sich in der Vergangenheit bereits sehr bewährt. Vor dem Hintergrund der immer weiter verschärften Anforderungen zum Emissionsschutz von Filteranlagen besteht aber dennoch ein großer Bedarf an Elektrofiltervorrichtungen, die einen gegenüber diesem Stand der Technik verbesserten Wirkungsgrad aufweisen.These known electrostatic filter devices have already proven themselves in the past. However, against the background of the ever stricter requirements for emission protection of filter systems, there is nevertheless a great need for electrostatic filter devices which have an improved efficiency compared to this prior art.

Der Erfindung liegt daher die Aufgabe zugrunde, den Wirkungsgrad von Elektrofiltervorrichtungen zu verbessern.The invention is therefore based on the object to improve the efficiency of electrostatic filter devices.

Die Lösung dieser Aufgabe gelingt mit der Gaszuführung für einen Elektrofilter gemäß Anspruch 1 und der Elektrofiltervorrichtung gemäß Anspruch 12. Bevorzugte Weiterbildungen der Gaszuführung sind den Unteransprüchen zu entnehmen.The solution of this object is achieved with the gas supply for an electric filter according to claim 1 and the electrostatic filter device according to claim 12. Preferred developments of the gas supply are described in the dependent claims.

Die Erfindung betrifft demnach zunächst die Gaszuführung für einen Elektrofilter einer Elektrofiltervorrichtung, da nach Untersuchungen der Erfinder gerade im Bereich der Zuleitung des Gases zum Filter besonders großes Verbesserungspotential im Hinblick auf den Wirkungsgrad der Elektrofiltervorrichtung vorhanden ist. Hierbei handelt es sich um eine grundsätzlich bekannte Gaszuführung, die einen Anströmkanal mit konstanter Querschnittsfläche, eine Gaseintrittshaube mit sich in Richtung des Elektrofilter aufweitender Querschnittsfläche und eine Zumischvorrichtung für ein Konditioniermittel aufweist. Dabei ist im aufgeweiteten Querschnittsbereich wenigstens ein Strömungsverteiler angeordnet.Accordingly, the invention initially relates to the gas supply for an electrostatic precipitator of an electrostatic precipitator device, since, according to studies by the inventor, particularly great potential for improvement with regard to the efficiency of the electrostatic precipitator device is present especially in the region of the supply of the gas to the filter. This is a generally known gas supply, which has a Anströmkanal with a constant cross-sectional area, a gas inlet hood with in the direction of the electrostatic filter aufweitender cross-sectional area and a Zumischvorrichtung for a conditioning agent. At least one flow distributor is arranged in the expanded cross-sectional area.

Die erfindungsgemäße Gaszuführung unterscheidet sich nun von den bekannten Gaszuführungen dadurch, dass eine erste Vorderkantenwirbel erzeugende Wirbelvorrichtung im Anströmkanal, eine zweite Vorderkantenwirbel erzeugende Wirbelvorrichtung in der Gaseintrittshaube in Gasströmungsrichtung vor dem Strömungsverteiler und die Zumischvorrichtung im Bereich einer der beiden Wirbelvorrichtungen angeordnet ist. Bei diesen Wirbelvorrichtungen handelt es sich um grundsätzlich bekannte Einbauelemente, wie sie zum Beispiel in der EP 0638732 A1 bereits für einen Diffusor beschrieben worden sind.The gas supply according to the invention now differs from the known gas feeds in that a first vortex vortex generating vortex device in the inflow, a second vortex vortex generating vortex device in the gas inlet hood in the gas flow direction in front of the flow distributor and the admixing device in the region of one of the two vortexers is arranged. These vortex devices are basically known mounting elements, as described, for example, in US Pat EP 0638732 A1 have already been described for a diffuser.

Wesentlich an diesen Wirbelvorrichtungen ist, dass sie Vorderkantenwirbel erzeugen. Diese auch als Wirbelschleppen bezeichneten Randwirbel kann man sich dabei als kleine in Strömungsrichtung gerichtete Tornados vorstellen, deren Durchmesser in Strömungsrichtung anwachsen. Die Wirbel drehen sich dabei von den Seitenrändern der Wirbelvorrichtung zunächst nach außen und rollen sich dann nach innen ein, wodurch sich gegenüberliegende Wirbel gegenläufig drehen. Blickt man stromabwärts auf eine derartige Wirbelvorrichtung, so sehen die Vorderkantenwirbel wie zwei sich gegenläufig einrollende Schnecken aus.Essential to these whirling devices is that they produce leading edge vertebrae. These vortices, also referred to as wake vortices, can be thought of as small tornadoes directed in the direction of flow, the diameters of which increase in the direction of flow. The vortices rotate from the side edges of the vortex device initially outward and then roll inward, causing opposite vortex rotate in opposite directions. If one looks downstream on such a vortex device, then the leading edge vortices look like two worms rolling in opposite directions.

Diese Vorderkantenwirbel haben den Vorteil, dass sie ausgesprochen stabile Wirbelsysteme sind, die zu einer besonders effektiven Durchmischung der Gasströmung führen. Dadurch ist es möglich, dass sich ein weitestgehend gleichmäßig turbulentes Strömungsverhalten hinter einer solchen Wirbelvorrichtung bildet, dass sich nahezu unabhängig von der gerade durchströmenden Gasmenge einstellt. Somit müssen derartige Wirbelvorrichtungen nicht ständig an schwankende Gasmengen angepasst werden. Man spricht daher in diesem Zusammenhang auch von statischen Mischern. Aufgrund dieser guten Durchmischungseigenschaften hat man die Vorderkantenwirbel erzeugenden Wirbelvorrichtungen insbesondere in Diffusoren dazu genutzt, um herkömmliche Umlenkbleche, Leitbleche oder Lochbleche die zur Strömungsverteilung oder Umlenkung dienen, vollständig durch diese zu ersetzen.These leading edge vortices have the advantage that they are extremely stable vortex systems, which lead to a particularly effective mixing of the gas flow. This makes it possible that a largely uniform turbulent flow behavior forms behind such a vortex device that adjusts almost independently of the amount of gas flowing straight through. Thus, such vortex devices do not have to be constantly adapted to fluctuating gas quantities. One speaks therefore in this context of static mixers. Because of these good mixing properties, the vortex vortex generating vortex devices have been used, in particular in diffusers, to completely replace conventional deflectors, baffles or perforated plates used for flow distribution or deflection.

Bisher wurden derartige Wirbelvorrichtungen nicht in Elektrofiltervorrichtungen oder Gaszuführungen für Elektrofilter benutzt, da man sie nicht für diese Anwendung als geeignet hielt, um die Strömungsverteiler (Lochbleche) vollständig zu ersetzen. Insbesondere die sich auf einer sehr kürzen Strömungsstrecke stark aufweitende Gaseintrittshaube erschien bisher für den Einsatz von derartigen Vorderkantenwirbel erzeugenden Wirbelvorrichtungen zu kurz um eine effektive Vergleichsmäßigung der Strömung zu erreichen.Heretofore, such vortex devices have not been used in electrostatic precipitators or gas feeds for electrostatic precipitators because they have not been considered suitable for this application to completely replace the flow distributors (perforated plates). In particular, the on a very short flow section greatly widening gas inlet hood appeared previously for the use of such vortex vortex generating vortex devices too short to achieve an effective Vergleichmäßigung of the flow.

Im Gegensatz dazu werden hier nun die Wirbelvorrichtungen auch in der sich extrem aufweitenden Gaseintrittshaube einer Gaszuführung für einen Elektrofilter eingesetzt, aber anders als bisher nicht dazu benutz, um die strömungsverteilenden Einbauelemente, sprich Strömungsverteiler, vollständig zu ersetzen, sondern nur deren Anströmung zumindest bereichsweise zu verbessern.In contrast, the vortex devices are now also used in the extremely expanding gas inlet hood of a gas supply for an electrostatic precipitator, but different than before not used to completely replace the flow-distributing mounting elements, ie flow distributor, but only to improve their flow at least partially.

Konkret heißt das, dass die Anströmung des vor dem Elektrofilter angeordneten Strömungsverteilers so optimiert wird, dass nur eine einzige Lochblechlage und nicht wie bisher zwei oder drei Lochblechlagen benötigt werden. Dabei haben die Wirbelvorrichtungen aufgrund ihrer in Strömungsrichtung schräg gestellten Anordnung eine in Strömungsrichtung nur sehr geringe Projektionsfläche bei einer hohen Durchwirbelungswirkung, wodurch die Druckverluste stark gesenkt werden. Zugleich ergibt die kräftige Verwirbelung, dass sich die Partikel stark bewegen und sich nicht mehr so leicht wie bisher ablagern. Durch die Verwirbelung werden gleichzeitig Staubsträhnen aufgelöst und verteilt, so dass die Staubpartikelverteilung vergleichmäßigt wird. Zugleich kann aufgrund der turbulenten aber vergleichmäßigten Anströmung, die Strömungsverteilung auf den Elektrofilter bereits mit einer einzigen Lochblechlage erfolgen. Dadurch reduzieren sich die Einbauflächen in der Gaszuführung, und der Wirkungsgrad des Elektrofilters bzw. der Elektrofiltervorrichtung wird insgesamt deutlich gesteigert, während die grundsätzlich als vorteilhaft eingeschätzte Anströmung des Elektrofilters über ein Lochblech beibehalten werden kann.Specifically, this means that the flow of the flow distributor arranged in front of the electrostatic filter is optimized so that only a single perforated sheet layer and not two or three perforated sheet layers are required as before. In this case, due to their obliquely arranged in the flow direction arrangement, the vortex devices have only a very small projection surface in the flow direction with a high turbulence effect, whereby the pressure losses are greatly reduced. At the same time, the strong turbulence results in the particles moving strongly and no longer depositing as easily as before. The turbulence at the same time dust strands are dissolved and distributed, so that the dust particle distribution is made uniform. At the same time, owing to the turbulent but uniform flow, the flow distribution to the electrostatic precipitator can already take place with a single perforated sheet layer. This reduces the mounting surfaces in the gas supply, and the efficiency of the electrostatic precipitator or the electrostatic precipitator device is significantly increased overall, while the basically estimated advantageous flow of the electrostatic precipitator can be maintained via a perforated plate.

Zudem zeichnet sich die erfindungsgemäße Gaszuführung dadurch aus, dass eine Wirbelvorrichtung im Anströmkanal mit zumindest annähernd konstantem Querschnitt angeordnet wird. Damit erfolgt die Bildung von ersten Vorderkantenwirbeln bereits im rohrförmigen Abschnitt mit im wesentlichen parallelen Kanalwänden. Diese Anordnung steht in Gegensatz zur bisherigen Lehre, die davon ausgeht, dass die Wirbelvorrichtungen stets innerhalb der sich aufweitenden Bereiche eines Diffusors angeordnet werden sollen. Sie basiert auf einem Synergieeffekt, der sich aus der Beibehaltung des wenigstens einen Strömungsverteilers vor dem Elektrofilter ergibt.In addition, the gas supply according to the invention is characterized in that a vortex device is arranged in the inflow channel with at least approximately constant cross section. Thus, the formation of first leading edge vortices already takes place in the tubular section with substantially parallel channel walls. This arrangement is in contrast to the previous teaching, which assumes that the vortex devices should always be arranged within the widening areas of a diffuser. It is based on a synergy effect resulting from the maintenance of the at least one flow distributor in front of the electrostatic precipitator.

Untersuchungen der Erfinder haben nämlich gezeigt, dass die vorgezogene Anordnung der ersten Wirbelvorrichtung im Anströmkanal gerade bei Elektrofiltern eine ausreichend vorteilhafte Strömungsverteilung erzeugt, wenn im Anschluss eine weitere Wirbelvorrichtung und ein Strömungsverteiler, also ein Lochblech, folgen. Dadurch ist es zum Beispiel auch unter Zuhilfenahme einfacher bzw. herkömmlicher Umlenkbleche möglich, die grundsätzlich bereits turbulente und gut durchmischte Gasströmung in der Gaseintrittshaube in Richtung des Strömungsverteilers zu richten, der dann die gleichmäßige Durchströmung des Elektrofilters sicherstellt.Investigations by the inventors have shown that the preferred arrangement of the first vortex device in the inflow channel produces a sufficiently advantageous flow distribution, especially in the case of electrostatic precipitators, when a further vortex device and a flow distributor, ie a perforated plate, subsequently follow. This makes it possible, for example, with the aid of simple or conventional baffles to direct the already basically turbulent and well-mixed gas flow in the gas inlet hood in the direction of the flow distributor, which then ensures the uniform flow through the electrostatic precipitator.

Besonders vorteilhaft ist, dass nunmehr die Zumischvorrichtung im Bereich einer der beiden Wirbelvorrichtungen angeordnet wird. So kann man die kräftigen Vorderkantenwirbel zur effektiven Zumischung eines Konditioniermittels in den Gasstrom nutzen. Aufgrund der sich in Strömungsrichtung ausbreitenden Vorderkantenwirbelsysteme ergibt sich so auch bei einer punktuellen Einspritzung eine besonders gute Vermischung des Konditioniermittels über den Strömungsquerschnitt hinweg.It is particularly advantageous that now the admixing device is arranged in the region of one of the two vortex devices. So you can use the powerful leading edge vortex for effective mixing of a conditioning agent in the gas stream. Due to the flow direction Spreading leading edge eddy systems thus results in a punctual injection particularly good mixing of the conditioning over the flow cross-section away.

Weiterbildend ist die erste Wirbelvorrichtung in Hauptströmungsrichtung vor einer Krümmung des Anströmkanals angeordnet. Dies hat den Vorteil, dass die erste Wirbelvorrichtung auch zur Umlenkung der Gasströmung in Krümmungsrichtung des Anströmkanals benutzt wird.Further, the first vortex device is arranged in the main flow direction in front of a curvature of the inflow channel. This has the advantage that the first vortex device is also used for deflecting the gas flow in the direction of curvature of the inflow channel.

Dabei ist die erste Wirbelvorrichtung zweckmäßiger Weise dichter zur Krümmungsinnenseite des Anströmkanals als zu dessen Krümmungsaußenseite, also in Bezug auf die Mitte des Anströmkanals asymmetrisch auf der Innenseite der Krümmung angeordnet. Dadurch wird der Strömung auf der Innenseite eine erhöhte Strömungsenergie zugeführt, die die Strömung befähigt, besser der scharfen Umlenkung der Innenkante zu folgen. Im Zusammenspiel mit der zweiten Wirbeleinrichtung ist es somit möglich, eine nahezu ablösungsfreie Umlenkung in der Filterhaube zu erzielen, was die Strömungsverteilung deutlich verbessert.In this case, the first vortex device is expediently closer to the inner side of the inflow duct than to its outer side of curvature, that is to say arranged asymmetrically on the inner side of the curvature with respect to the center of the inflow channel. As a result, the flow on the inside of an increased flow energy is supplied, which enables the flow to better follow the sharp deflection of the inner edge. In conjunction with the second vortex device, it is thus possible to achieve a virtually separation-free deflection in the filter hood, which significantly improves the flow distribution.

Grundsätzlich kann die erste Wirbelvorrichtung im Anströmkanal derart angewinkelt angeordnet, dass die Anströmkante ihrer der Gasströmung zugewandten wenigstens einen Anströmfläche in Richtung der Krümmungsinnenseite und die Abrisskante zur Krümmungsaußenseite des Anströmkanals weist. Bevorzugt ist die erste Wirbelvorrichtung allerdings andersherum im Anströmkanal angewinkelt angeordnet, so dass die Anströmkante ihrer der Gasströmung zugewandten wenigstens einen Anströmfläche in Richtung der Krümmungsaußenseite und die Abrisskante zur Krümmungsinnenseite des Anströmkanals weist. Dabei ist die Anströmkante die Kante der Wirbelvorrichtung, die der Gasströmung zugewandt ist und die Abrisskante ist die Kante, die der Strömung abgewandt ist. Mit anderen Worten: An der Anströmkante wird der Wirbelvorgang ausgelöst, und an der Abströmkante verlässt die Gasströmung die Anströmfläche. Bei dieser Ausgestaltung ergibt sich ein besonders stark ausgebildetes Vorderkantenwirbelsystem an der Abrisskante, das sehr weit in den Bereich der Krümmungsaußenseite des Anströmkanals hineinreicht.In principle, the first vortex device can be arranged at an angle in the inflow channel in such a way that the leading edge of its at least one inflow surface faces the gas flow in the direction of the curvature inside and the trailing edge points toward the curvature outside of the inflow channel. Preferably, however, the first vortex device is arranged at an angle in the inflow channel, so that the inflow edge of its facing the gas flow has at least one inflow surface in the direction of the curvature outside and the trailing edge to the curvature inside of the inflow channel. In this case, the leading edge is the edge of the vortex device, which faces the gas flow and the trailing edge is the edge which faces away from the flow. In other words: At the leading edge, the vortexing process is triggered, and at the trailing edge, the gas flow leaves the inflow surface. In this embodiment, a particularly strong trained Vorderkantenwirbelsystem results in the trailing edge, which extends very far in the region of the curvature outside of the inflow channel.

Es ist von Vorteil, wenn die zweite Wirbelvorrichtung in einem unteren Bereich der Gaseintrittshaube angeordnet ist. Dies führt dazu, dass insbesondere der untere Bereich der Gaseintrittshaube mit Vorderkantenwirbeln durchmischt wird, so dass sich Staubpartikel, die sich aufgrund ihres Gewichtes nach unten bewegen, nicht am Boden der Gaseintrittshaube ablagern, sondern vielmehr turbulent vor dem Filter wieder in die Gasströmung eingemischt werden. Dies reduziert die sich am Boden der Gaseintrittshaube ansammelnden Partikelablagerungen und führt zu einer deutlichen Wirkungsgradverbesserung des Elektrofilters. Zudem wird bei einem vertikal angeordneten Anströmkanal die, aufgrund einer Krümmung in horizontale Richtung umgelenkte, Luftströmung nochmals durch die zweite Wirbelvorrichtung in eine horizontalere Richtung gelenkt. Die Wirbelvorrichtung dient somit nicht nur als Mittel zur Durchmischung sondern auch als Umlenkmittel.It is advantageous if the second vortex device is arranged in a lower region of the gas inlet hood. This results in that in particular the lower portion of the gas inlet hood is mixed with leading edge vortices, so that dust particles that move down due to their weight, do not deposit on the bottom of the gas inlet hood, but rather turbulently mixed in front of the filter back into the gas flow. This reduces the accumulated at the bottom of the gas inlet hood particle deposits and leads to a significant improvement in the efficiency of the electrostatic precipitator. In addition, in the case of a vertically arranged inflow channel, the air flow diverted in the horizontal direction due to a curvature is again passed through the second vortex device steered in a more horizontal direction. The vortex device thus serves not only as a means for mixing but also as a deflection.

Zweckmäßig ist es, wenn die zweite Wirbelvorrichtung in einem spitzen Winkel zu einer Wand der Gaseintrittshaube angeordnet ist. Dabei ist unter einem spitzen Winkel ein Winkel von weniger als 45° und mehr als 0,5 ° zu verstehen. Dadurch wird an den Anströmkanten der Wirbelvorrichtung ein ausgeprägtes Vorderkantenwirbelsystem erzeugt.It is expedient if the second vortex device is arranged at an acute angle to a wall of the gas inlet hood. An acute angle is understood to mean an angle of less than 45 ° and more than 0.5 °. As a result, a pronounced leading-edge vortex system is produced at the leading edges of the vortex device.

Besonders bevorzugt mündet die Zumischvorrichtung hinter der Anströmkante einer Wirbelvorrichtung. Dadurch können auch sehr einfache Zumischvorrichtungen benutzt werden, wie zum Beispiel ein einfacher Rohrstutzen, der hinter der Anströmkante einer Wirbelvorrichtung mündet. Aufgrund der sich an der Anströmkante bildenden starken und sich in Strömungsrichtung kegelförmig ausweitenden Wirbel, erfolgt so auch bei einer nur punktuellen Zumischung eine sehr gute Vermischung des durch den Rohrstutzen austretenden Konditioniermittels mit dem vorbeiströmenden Gas. Dabei sind auch Ausführungsformen zweckmäßig, bei denen die Zumischvorrichtung unmittelbar an der Wirbelvorrichtung angebracht ist.Particularly preferably, the admixing device opens behind the leading edge of a vortex device. As a result, very simple Zumischvorrichtungen can be used, such as a simple pipe socket, which opens behind the leading edge of a vortex device. Due to the forming at the leading edge strong and widening in the flow direction vortices vortex, so there is a very good mixing of exiting through the pipe stub conditioning with the gas flowing past even with only selective admixture. In this case, embodiments are expedient in which the admixing device is attached directly to the vortex device.

Eine Wirbelvorrichtung sollte wenigstens eine Wirbelscheibe aufweisen. Wirbelscheiben sind hinlänglich bekannt und können kreisförmig, elliptisch, rechteckig oder auch Deltaflügel-förmig ausgeführt sein, wobei Scheiben in gerader oder geknickter Ausführungsform bzw. auch in dreieckigen oder tropfenförmigen Querschnittsausführungen geeignet sind.A whirling device should have at least one vertebral disc. Spinal discs are well known and can be circular, elliptical, rectangular or even delta-wing-shaped, with discs in straight or kinked embodiment or in triangular or teardrop-shaped cross-sectional embodiments are suitable.

Weiterbildend weist eine Wirbelvorrichtung mehrere nebeneinander in einem Strömungsquerschnitt angeordnete Wirbelscheiben auf. Dabei können die Wirbelscheiben miteinander verkettet oder auch einzeln individuell an der Wandung befestigt sein. Auch können so kettenartig um den gesamten Querschnitt herum verlaufende Wirbelvorrichtungen gebildet werden. Das bedeutet, dass bei einem rechteckigen Anströmkanal jeweils mindestens eine Wirbelscheibe oben, unten, links und rechts angeordnet ist.In a further development, a vortex device has a plurality of side-by-side arranged in a flow cross-section vertebrae. In this case, the vertebrae can be linked together or individually attached to the wall individually. Also can be formed like a chain around the entire cross-section running vortex devices. This means that in each case at least one vortex disc is arranged at the top, bottom, left and right in the case of a rectangular inflow channel.

Bevorzugt weist eine Wirbelvorrichtung mehrere kaskadierend angeordnete Wirbelscheiben auf. Unter kaskadierend versteht man hier eine funktionale Abfolge von hintereinander angeordneten Wirbelscheiben. Diese geben somit ein treppenförmig angeordnetes Bild wieder, wobei auch schräg oder diagonal versetzte Anordnungen der einzelnen Wirbelscheiben denkbar sind. Wichtig ist nur, dass der Gasstrom von einer Wirbelscheibe zur nächsten weitergeleitet wird, wobei eine optimale Induktionswirkung auftritt.A vortex device preferably has a plurality of cascading arranged vortex discs. Cascading here means a functional sequence of successively arranged vertebral discs. These thus represent a staircase-shaped image again, with obliquely or diagonally offset arrangements of the individual vertebrae are conceivable. It is only important that the gas flow is forwarded from one vortex disc to the next, whereby an optimal induction effect occurs.

Auch ist es zu bevorzugen, wenn eine Wirbelvorrichtung ein System aus mehreren Wirbelscheiben aufweist. Ein derartiges Wirbelscheibensystem kann zum Beispiel aus einer Mehrzahl von Wirbelscheiben bestehen, die auf einer gemeinsamen Schwenkachse angeordnet sind. So können mehrere Wirbelscheiben gemeinsam in einem zueinander fest definierten funktionalen Zusammenhang in ihrer Wirkungsweise zum Beispiel durch Drehen bzw. Verschwenken verändert werden.It is also preferable if a whirling device comprises a system of several intervertebral discs. Such a vortex plate system may for example consist of a plurality of vortex discs, which are arranged on a common pivot axis. Thus, several vertebrae can be changed together in a mutually firmly defined functional relationship in their mode of action, for example by turning or pivoting.

Erfindungsgemäß wird die Aufgabe auch durch eine Elektrofiltervorrichtung gelöst, die einen Elektrofilter und eine Gaszuführung nach einer der vorher geschilderten Ausführungs- und Weiterbildungsformen aufweist. Diese Elektrofiltervorrichtung zeichnet sich insbesondere durch die Verwendung von Wirbelscheiben in der vorbeschriebenen Art und Weise aus, wodurch sich die bereits in den vorhergehenden Ausführungsformen der Gaszuführung beschriebenen Vorteile ergeben.According to the invention the object is also achieved by an electrostatic filter device having an electrostatic precipitator and a gas supply according to one of the previously described embodiments and further developments. This electrostatic precipitator device is characterized in particular by the use of intervertebral discs in the manner described above, resulting in the advantages already described in the preceding embodiments of the gas supply.

Nachfolgend wird die Erfindung anhand einer Zeichnung weiter erläutert. Darin zeigt schematisch:

Fig. 1
einen Längsschnitt durch eine Elektrofiltervorrichtung die einen Elektrofilter und eine Gaszuführung aufweist.
The invention will be further explained with reference to a drawing. In it shows schematically:
Fig. 1
a longitudinal section through an electrostatic filter device having an electric filter and a gas supply.

Die in Fig. 1 gezeigte Ausführungsform der erfindungsgemäßen Elektrofiltervorrichtung 1 hat einen Elektrofilter 2, eine Gaszuführung 3 und einer Gasabführung 4. Die Gaszuführung 3 wird im Betrieb der Elektrofiltervorrichtung 1 von einem zu filternden Gasstrom 5 durchströmt, die diesen aus einer vertikalen in eine im Wesentlichen horizontale Richtung umlenkt und auf den Filter 2 richtet. Im Filter 2 wird der zu filternde Gasstrom 5 dann von darin enthaltenen Partikeln durch die bereits oben erläuterten elektrischen Vorgänge befreit und tritt über die Gasabführung 4 als gefilterter Gasstrom 6 aus der Elektrofiltervorrichtung 1 aus.In the Fig. 1 shown embodiment of the electrostatic filter device 1 according to the invention has an electrostatic precipitator 2, a gas inlet 3 and a gas outlet 4. The gas supply 3 is flowed through during operation of the electrostatic filter device 1 by a gas stream 5 to be filtered, which deflects it from a vertical to a substantially horizontal direction and on directs the filter 2. In the filter 2, the gas stream 5 to be filtered is then freed of particles contained therein by the electrical processes already explained above and exits via the gas outlet 4 as a filtered gas stream 6 from the electrostatic filter device 1.

Die Gaszuführung 3 beinhaltet also in der hier gezeigten Ausführungsform einen vertikalen Anströmkanal 7 mit im Wesentlichen konstantem Strömungsquerschnitt. An den Anströmkanal 7 schließt sich in Hauptströmungsrichtung eine Krümmung 9 des Anströmkanals an. Dabei verändert der zu filternde Gasstrom 5 seine Strömungsrichtung von einer vertikalen hin zu einer horizontalen Richtung.The gas supply 3 thus includes in the embodiment shown here a vertical inflow channel 7 with a substantially constant flow cross-section. At the inflow duct 7, a curvature 9 of the inflow channel adjoins in the main flow direction. In this case, the gas flow 5 to be filtered changes its flow direction from a vertical to a horizontal direction.

Dem gekrümmten Anströmkanalabschnitt 9 folgt dann die Gaseintrittshaube 8, die sich in Richtung des Filters 2 in ihrem Querschnitt aufweitet. Unmittelbar vor dem Elektrofilter 2, also im Bereich der größten Querschnittsfläche der Gaseintrittshaube 8 befindet sich der Strömungsverteiler 10, bei dem es sich hier um ein einfaches Lochblech handelt.The curved Anströmkanalabschnitt 9 then follows the gas inlet hood 8, which widens in the direction of the filter 2 in its cross section. Immediately before the electrostatic filter 2, that is in the region of the largest cross-sectional area of the gas inlet hood 8 is the flow distributor 10, which is a simple perforated plate here.

Im Anströmkanal 7 vor dem gekrümmten Abschnitt 9 ist eine erste Vorderkantenwirbel erzeugende Wirbelvorrichtung 11 angeordnet. Die zweite Vorderkantenwirbel erzeugende Wirbelvorrichtung 12 befindet sich im schmalen Bereich der Gaseintrittshaube 8, also in Strömungsrichtung vor dem Lochblech 10. Beide Wirbelvorrichtungen sind in dem hier gezeigten Ausführungsbeispiel jeweils ein einzelnes kreisförmiges Wirbelblech, dass an seiner der Gasströmung zugewandten Seite eine Anströmfläche 13 aufweist. Die Anströmfläche 13 verbindet hierbei die stromaufwärts gerichtete Anströmkante 14 und die stromabwärts gerichtete Abrisskante 15.In the inflow channel 7 in front of the curved portion 9, a first vortex vortex generating vortex device 11 is arranged. The second vortex vortex generating vortex device 12 is located in the narrow region of the gas inlet hood 8, ie in the flow direction in front of the perforated plate 10. In the embodiment shown here, both vortex devices are each a single circular vortex plate that has an inflow surface 13 on its side facing the gas flow. The inflow surface 13 in this case connects the upstream directed inflow edge 14 and the downstream spoiler edge 15.

Dabei ist das erste Wirbelblech 11 vor der Krümmung 9 so angeordnet, dass die Anströmfläche 13 sich in Strömungsrichtung von der Krümmungsaußenseite 21 zur Krümmungsinnenseite 22 der Krümmung 9 erstreckt. Bei der hier dargestellten sehr scharfen Krümmung 9 ist die Krümmungsaußenseite 21 also das schräg nach oben stehende Blech, während die Krümmungsinnenseite 22 der Ecke bzw. dem Übergang zwischen Anströmkanal 7 und Gaseintrittshaube 8 entspricht.Here, the first vortex plate 11 is arranged in front of the curvature 9 so that the inflow surface 13 extends in the flow direction from the curvature outer side 21 to the curvature inner side 22 of the curvature 9. In the case of the very sharp curvature 9 shown here, the curvature outside 21 is thus the obliquely upward-standing plate, while the curvature inside 22 corresponds to the corner or the transition between inflow channel 7 and gas inlet cap 8.

Konkret ist das erste Wirbelblech 11 so angeordnet, dass die Anströmkante 14 nach unten, also gegen die zu filternden Gasströmung 5, gerichtet ist und die Abrisskante 15 nach oben weist. Die Anströmfläche 13 verläuft also im dargestellten Längsschnitt von der Anströmkante 14 schräg nach oben zur Abrisskante 15.Specifically, the first vortex plate 11 is arranged so that the leading edge 14 is directed downward, ie against the gas flow to be filtered 5, and the tear-off edge 15 faces upward. The inflow surface 13 thus extends in the illustrated longitudinal section of the leading edge 14 obliquely upward to the trailing edge 15th

An dieser schräg angeströmten Wirbelvorrichtung 11 bildet sich hinter der Anströmkante 14 ein ausgeprägtes Vorderkantenwirbelsystem 16, welches sich von der Anströmkante 14 in Hauptströmungsrichtung 5 vertikal nach oben ausbreitet. Dabei vergrößert sich der Durchmesser der Vorderkantenwirbel 16 quer zur Hauptströmungsrichtung der Gasströmung 5. Entsprechendes gilt auch für das zweite Wirbelblech 12, wo sich ebenfalls ein Vorderkantenwirbelsystem 17 ausbildet, wobei das Vorderkantenwirbelsystem 17 im Wesentlichen auf das Lochblech 10 zuströmend nahezu horizontal ausgerichtet ist.At this obliquely impinged vortex device 11 forms behind the leading edge 14, a pronounced leading edge vortex system 16, which propagates from the leading edge 14 in the main flow direction 5 vertically upwards. The same applies to the second vortex plate 12, where also forms a leading edge vortex system 17, wherein the leading edge vortex system 17 is substantially aligned on the perforated plate 10 almost horizontally aligned.

Zur gleichmäßigen Umlenkung der Gaströmung 5 von der Vertikalen in Richtung der Horizontalen befinden sich in der Gaseintrittshaube 8 im oberen Bereich Umlenkbleche 18 herkömmlicher gekrümmter Bauart. Sie ergänzen lediglich den bereits durch die Wirbelvorrichtung 11 erzeugte Richtungsänderung der Gasströmung und dienen insbesondere nicht der Verwirbelung.For uniform deflection of the gas flow 5 from the vertical in the direction of the horizontal are located in the gas inlet hood 8 at the top of baffles 18 conventional curved design. They merely supplement the change in direction of the gas flow already generated by the vortex device 11 and in particular do not serve to swirl.

Zur Konditionierung des zu filternden Gases 5 ist im Anströmkanal 7 und zwar im Bereich der Anströmkante 14 des ersten Wirbelblechs 11 ein Rohrstutzen 19 angeordnet, durch den ein Konditioniermittel 20 in den Anströmkanal eingespritzt werden kann. Aufgrund der starken Verwirbelung der Gasströmung in dem sich stromabwärts ausbreitenden Wirbel 16 erfolgt so eine besonders gute Durchmischung des Gases mit dem Konditioniermittel 20, so dass eine aufwendige mehrdüsige Zumischvorrichtung entfallen kann. Dies senkt den Strömungswiderstand und die Herstellungskosten und macht die Zumischvorrichtung 19 weniger anfällig für Störungen, die sich zum Beispiel aus Staubablagerungen ergeben.For conditioning of the gas to be filtered 5, a pipe stub 19 is arranged in the inflow duct 7, specifically in the region of the inflow edge 14 of the first vortex plate 11, through which a conditioning agent 20 can be injected into the inflow channel. Due to the strong turbulence of the gas flow in the downstream spreading vortex 16 so there is a particularly good mixing of the gas with the conditioning agent 20, so that a complex Mehrdüsige admixing can be omitted. This lowers flow resistance and manufacturing costs and makes the admixing device 19 less prone to disturbances resulting, for example, from dust deposits.

Claims (12)

  1. Gas feed (3) for an electrostatic filter (2), which comprises an incoming flow channel (7) with a constant cross-sectional area, a gas inlet hood (8) with a cross-sectional area that widens out in the direction of the electrostatic filter (2), and an admixture arrangement (19) for a conditioning means (20), wherein at least one flow distributor (10) is arranged in the widened cross-sectional region of the gas inlet hood (8), characterized in that a first vortex arrangement (11) generating leading-edge vortices (16) is arranged in the incoming flow channel (7), a second vortex arrangement (12) generating leading-edge vortices (17) is arranged in the gas inlet hood (8) before the flow distributor (10) in the direction of gas flow, and the admixture arrangement (19) is arranged in the region of one of the two vortex arrangements (11,12).
  2. Gas feed according to Claim 1, characterized in that the first vortex arrangement (11) is arranged before a bend (9) in the incoming flow channel (7) in the main direction of flow.
  3. Gas feed according to Claim 2, characterized in that the first vortex arrangement (11) is arranged in the incoming flow channel closer to the bend's inner side (22) than to the bend's outer side (21).
  4. Gas feed according to one of Claims 2 or 3, characterized in that the first vortex arrangement (11) is arranged in the incoming flow channel (7) at such an angle that the incoming flow edge (14) of at least one incoming flow surface (13) facing towards the gas flow (5) points in the direction of the bend's outer side (21) and the separation edge (15) points towards the bend's inner side (22) in the incoming flow channel (7).
  5. Gas feed according to one of the preceding claims, characterized in that the second vortex arrangement (12) is arranged in a lower region of the gas inlet hood (8).
  6. Gas feed according to one of the preceding claims, characterized in that the second vortex arrangement (12) is arranged at an acute angle in relation to a wall of the gas inlet hood (8).
  7. Gas feed according to one of the preceding claims, characterized in that the admixture arrangement (19) discharges behind the incoming flow edge (14) of a vortex arrangement (11,12).
  8. Gas feed according to one of the preceding claims, characterized in that a vortex arrangement (11,12) comprises at least one vortex disk.
  9. Gas feed according to one of the preceding claims, characterized in that a vortex arrangement (11,12) comprises several vortex disks arranged next to each other in a flow cross section.
  10. Gas feed according to one of the preceding claims, characterized in that a vortex arrangement (11,12) comprises several vortex disks arranged in a cascading fashion.
  11. Gas feed according to one of the preceding claims, characterized in that a vortex arrangement (11,12) comprises a system of several vortex disks.
  12. Electrostatic-filter arrangement (1), which comprises an electrostatic filter (2) and a gas feed (3) according to one of the preceding claims.
EP04013364A 2004-06-07 2004-06-07 Gas supply for electrostatic precipitator and electrostatic precipitator Expired - Lifetime EP1604742B1 (en)

Priority Applications (19)

Application Number Priority Date Filing Date Title
ES04013364T ES2351980T3 (en) 2004-06-07 2004-06-07 GAS SUPPLY FOR ELECTROSTATIC PRECIPITATOR AND ELECTROSTATIC PRECIPITATOR.
DE502004011737T DE502004011737D1 (en) 2004-06-07 2004-06-07 Gas supply for electrostatic filter and electrostatic filter device
SI200431545T SI1604742T1 (en) 2004-06-07 2004-06-07 Gas supply for electrostatic precipitator and electrostatic precipitator
PT04013364T PT1604742E (en) 2004-06-07 2004-06-07 Gas supply for electrostatic precipitator and electrostatic precipitator
AT04013364T ATE483524T1 (en) 2004-06-07 2004-06-07 GAS SUPPLY FOR ELECTRICAL FILTER AND ELECTRICAL FILTER DEVICE
DK04013364.7T DK1604742T3 (en) 2004-06-07 2004-06-07 Gas supply for electrofilter and electrofilter device
PL04013364T PL1604742T3 (en) 2004-06-07 2004-06-07 Gas supply for electrostatic precipitator and electrostatic precipitator
EP04013364A EP1604742B1 (en) 2004-06-07 2004-06-07 Gas supply for electrostatic precipitator and electrostatic precipitator
US10/910,638 US6964698B1 (en) 2004-06-07 2004-08-04 Gas supply for electrostatic filter and electrostatic filter arrangement
CN200510007500A CN100577301C (en) 2004-06-07 2005-02-22 Gas supply for electrostatic filter and electrostatic filter arrangement
ZA200504241A ZA200504241B (en) 2004-06-07 2005-05-24 Gas supply for electrostatic filter and electrostatic filter arrangement
CA002508257A CA2508257C (en) 2004-06-07 2005-05-24 Gas supply for electrostatic filter and electrostatic filter arrangement
TW094117132A TWI291372B (en) 2004-06-07 2005-05-25 Gas supply for electrostatic filter and electrostatic filter arrangement
AU2005202330A AU2005202330B2 (en) 2004-06-07 2005-05-30 Gas supply for electrostatic filters and electrostatic filter arrangement
MXPA05005879A MXPA05005879A (en) 2004-06-07 2005-06-02 Gas supply for electrostatic filter and electrostatic filter arrangement.
UAA200505390A UA80165C2 (en) 2004-06-07 2005-06-06 Gas supply for electrostatic filter and electrostatic filter arrangement
RU2005117219/12A RU2298438C2 (en) 2004-06-07 2005-06-06 Pipeline for supplying gas to electrostatic filter and system with electrostatic filter
KR1020050048599A KR100722341B1 (en) 2004-06-07 2005-06-07 Gas supply for electrostatic filter and electrostatic filter arrangement
JP2005167283A JP4390746B2 (en) 2004-06-07 2005-06-07 Electrostatic filter device and gas supply device for electrostatic filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04013364A EP1604742B1 (en) 2004-06-07 2004-06-07 Gas supply for electrostatic precipitator and electrostatic precipitator

Publications (2)

Publication Number Publication Date
EP1604742A1 EP1604742A1 (en) 2005-12-14
EP1604742B1 true EP1604742B1 (en) 2010-10-06

Family

ID=34925272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04013364A Expired - Lifetime EP1604742B1 (en) 2004-06-07 2004-06-07 Gas supply for electrostatic precipitator and electrostatic precipitator

Country Status (19)

Country Link
US (1) US6964698B1 (en)
EP (1) EP1604742B1 (en)
JP (1) JP4390746B2 (en)
KR (1) KR100722341B1 (en)
CN (1) CN100577301C (en)
AT (1) ATE483524T1 (en)
AU (1) AU2005202330B2 (en)
CA (1) CA2508257C (en)
DE (1) DE502004011737D1 (en)
DK (1) DK1604742T3 (en)
ES (1) ES2351980T3 (en)
MX (1) MXPA05005879A (en)
PL (1) PL1604742T3 (en)
PT (1) PT1604742E (en)
RU (1) RU2298438C2 (en)
SI (1) SI1604742T1 (en)
TW (1) TWI291372B (en)
UA (1) UA80165C2 (en)
ZA (1) ZA200504241B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017002811A1 (en) 2017-03-22 2018-09-27 Balcke-Dürr GmbH Flow channel with a mixing device

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3669994B2 (en) * 2003-09-22 2005-07-13 シャープ株式会社 Car air purifier
US7156902B1 (en) * 2005-05-04 2007-01-02 Electric Power Research Institute Wet electro-core gas particulate separator
DE102006004069A1 (en) 2006-01-28 2007-09-06 Fisia Babcock Environment Gmbh Method and device for mixing a fluid with a large gas flow rate
DE102006004068A1 (en) 2006-01-28 2007-08-09 Fisia Babcock Environment Gmbh Method and device for mixing a fluid with a large gas flow rate
ATE514802T1 (en) 2006-03-29 2011-07-15 Applied Materials Gmbh & Co Kg VACUUM TRANSPORT DEVICE WITH MOVABLE GUIDE RAIL
PL2259705T3 (en) * 2008-02-29 2012-05-31 Nestec Sa Method and system for preparing a liquid extract from a cell using centrifugal forces
US8038776B2 (en) * 2008-03-12 2011-10-18 Bha Group, Inc. Apparatus for filtering gas turbine inlet air
US7527674B1 (en) * 2008-03-12 2009-05-05 Bha Group, Inc. Apparatus for filtering gas turbine inlet air
US7695551B2 (en) * 2008-03-12 2010-04-13 Bha Group, Inc. Apparatus for filtering gas turbine inlet air
FR2937264B1 (en) * 2008-10-22 2011-04-22 Leclerc Monique Huret DOUBLE EFFECT DUST COLLECTOR
JP5523807B2 (en) 2009-08-05 2014-06-18 三菱重工業株式会社 Exhaust gas treatment equipment
PL2354651T3 (en) * 2010-01-18 2014-11-28 General Electric Technology Gmbh System for combined flue heat recovery and dust precipitation improvement as retrofit solution for existing coal-fired power stations
US10890113B2 (en) * 2015-12-02 2021-01-12 Airtech Innovations, Llc System, apparatuses, and methods for improving the operation of a turbine by using electrostatic precipitation
CN111772269B (en) * 2020-07-13 2022-06-14 东北大学秦皇岛分校 Recyclable medical mask based on flexible super-electric structure and preparation method thereof
CN113304557B (en) * 2021-04-30 2022-05-13 成都易态科技有限公司 Dust removal system and dust removal method for primary flue gas of converter steelmaking
CN116481117B (en) * 2023-06-21 2023-09-05 山西建康家园科技有限公司 Intelligent air purification and disinfection device
CZ309963B6 (en) * 2023-07-18 2024-03-06 ZVVZ GROUP, a.s. Electrostatic dust separator from the gas stream
CN117563372B (en) * 2024-01-17 2024-04-16 汕头中圣科营热电有限公司 Electrostatic adsorption dust-removing type flue gas desulfurization and denitrification pretreatment mechanism and treatment method

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1381719A (en) * 1920-12-10 1921-06-14 Frank R Mcgee Centrifugal gas-cleaning apparatus
GB1096624A (en) 1964-01-30 1967-12-29 Bristol Siddeley Engines Ltd Diffusers for fluid flows
US3425189A (en) * 1965-08-27 1969-02-04 Metallgesellschaft Ag Diffuser-like inlet connection for electrical dust separators
DE2130826A1 (en) 1971-06-22 1973-01-11 Metallgesellschaft Ag DEVICE FOR REDUCING AND EQUALIZATION
AR205152A1 (en) * 1973-02-02 1976-04-12 United States Filter Corp WET ELECTROSTATIC PRECIPITATOR
SE396192B (en) * 1976-06-01 1977-09-12 Advanced Mineral Res PROCEDURE FOR PURIFICATION OF SUBSTANTIAL GAS
FR2409076A1 (en) * 1977-11-22 1979-06-15 Soc Lab Sarl IMPROVEMENTS IN METHODS AND APPARATUS FOR THE CENTRIFUGAL TREATMENT OF FLUIDS CONTAINING SUSPENDED IMPURITIES
US4208192A (en) * 1978-10-27 1980-06-17 Uop Inc. Sonic spray of H2 SD4 in a swirling heated air stream
JPS57349A (en) 1980-06-02 1982-01-05 Nisshin Jiyabara Kogyo Kk Exhaust gas purifier in internal combustion engine
US4588423A (en) * 1982-06-30 1986-05-13 Donaldson Company, Inc. Electrostatic separator
DE3424196A1 (en) * 1984-02-11 1985-08-22 Robert Bosch Gmbh, 7000 Stuttgart DEVICE FOR THE REMOVAL OF SOLID PARTICULAR PARTS FROM EXHAUST GASES FROM COMBUSTION ENGINES
JPS6283060A (en) 1985-10-04 1987-04-16 Yamasan:Kk Liquid multi-cyclone apparatus by vertical vortex flow plate
EP0288351A3 (en) * 1987-03-27 1989-01-25 René Guy Georges Alexandre Godard Gas cleaner, especially air, with an ionisation chamber
US4971768A (en) 1987-11-23 1990-11-20 United Technologies Corporation Diffuser with convoluted vortex generator
US5156658A (en) * 1991-05-01 1992-10-20 Research-Cottrell, Inc. Electrostatic precipitator gas inlet plenum having a corrugated perforated plate
BR9304771A (en) * 1993-04-09 1994-11-08 Social Welfare Foundation Hokk Activated carbon, and process and apparatus for preparing activated carbon
DE4325977A1 (en) * 1993-08-03 1995-02-09 Balcke Duerr Ag Diffuser
US5591334A (en) * 1993-10-19 1997-01-07 Geochto Ltd. Apparatus for generating negative ions
US5968231A (en) * 1993-12-14 1999-10-19 Grignotage, (Sarl) Cyclone exchanger with tranquilizing tank and method for purifying and decontaminating air
US5855652A (en) * 1997-01-31 1999-01-05 Topaz 2000, Inc. Aerosol collector and concentrator
US20020014707A1 (en) * 1997-07-11 2002-02-07 Fls Miljo A/S Method of flue gas conditioning and a flue gas conditioning device
US5914454A (en) * 1997-09-12 1999-06-22 Team Technologies, Llc Apparatus and method for concentrating constituents from a gas stream
US6017381A (en) * 1998-03-09 2000-01-25 Advance Electrostatic Technologies, Inc. Field effect auxiliary gas cyclone (FEAGC) and method of using
KR100348453B1 (en) * 2000-02-28 2002-08-09 박석호 Dust collecting apparatus using water

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017002811A1 (en) 2017-03-22 2018-09-27 Balcke-Dürr GmbH Flow channel with a mixing device

Also Published As

Publication number Publication date
KR100722341B1 (en) 2007-05-28
MXPA05005879A (en) 2006-03-17
JP2006021194A (en) 2006-01-26
EP1604742A1 (en) 2005-12-14
ES2351980T3 (en) 2011-02-14
DK1604742T3 (en) 2011-01-03
CN100577301C (en) 2010-01-06
CA2508257C (en) 2008-09-09
RU2005117219A (en) 2006-11-20
JP4390746B2 (en) 2009-12-24
US6964698B1 (en) 2005-11-15
SI1604742T1 (en) 2011-01-31
US20050268784A1 (en) 2005-12-08
ZA200504241B (en) 2006-10-25
KR20060048237A (en) 2006-05-18
DE502004011737D1 (en) 2010-11-18
AU2005202330A1 (en) 2005-12-22
ATE483524T1 (en) 2010-10-15
CA2508257A1 (en) 2005-12-07
TW200539945A (en) 2005-12-16
UA80165C2 (en) 2007-08-27
PT1604742E (en) 2010-12-07
CN1706554A (en) 2005-12-14
TWI291372B (en) 2007-12-21
RU2298438C2 (en) 2007-05-10
AU2005202330B2 (en) 2009-12-03
PL1604742T3 (en) 2011-05-31

Similar Documents

Publication Publication Date Title
EP1604742B1 (en) Gas supply for electrostatic precipitator and electrostatic precipitator
EP1681090B1 (en) Apparatus and method for mixing of a fluid flow in a flow channel
EP0495385B1 (en) Process for material exchange between liquid and gazeous fluids
DE2361636A1 (en) VENTURI DEVICE
AT507552B1 (en) METHOD AND DEVICE FOR INFLUENCING FLOW CHARACTERISTICS IN A FLUID CURRENT
EP1797250B1 (en) Nozzle for the water outlet of a faucet
WO2015158429A1 (en) Blowing device for a rotary air lock
DE1471634B1 (en) Device for separating impurities finely divided in gases
DE1274560B (en) Device for dedusting industrial gases
DE2543878A1 (en) AIR CONVEYING DUCT
DE1671413B1 (en) VENTURI WASHERS FOR WET CLEANING OF GASES
AT519033B1 (en) sifter
EP2087932B1 (en) Device for separating solid or fluid substances from a gas flow
DE102018105828A1 (en) Device for expanding an air volume flow
DE102008027740B4 (en) Device for flue gas guidance in a multi-pass boiler
DE102004034151A1 (en) particle
EP3434379B1 (en) Method and device for separation of fine particles in a flat separator
DE2652365A1 (en) METHOD AND APPARATUS FOR REMOVING POLLUTION FROM A GAS FLOW
DE3709649C1 (en) Apparatus for improving the flow equalisation downstream of a lamellae element apparatus
EP2195115B1 (en) Physical structure of exhaust-gas cleaning installations
EP1601442B1 (en) Droplet separator unit and flue gas washer equipped with said unit
DE102007056109A1 (en) Device for air separation from spread material during spreading of material on pressed material mat for manufacturing material plate in press, has air inlet vent whose width corresponds to width of ventilator
DE19651857C1 (en) Separator for removing coarse dust from incinerator plant flue gases
DE2710619C2 (en) Wet electrostatic precipitator
DE102014015036A1 (en) Oxidation tank and method for treating effluent water of a seawater scrubber

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

17P Request for examination filed

Effective date: 20060329

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ROTTMANN, ZIMMERMANN + PARTNER AG

Ref country code: CH

Ref legal event code: EP

Ref country code: CH

Ref legal event code: PFA

Owner name: BALCKE-DUERR GMBH

Free format text: BALCKE-DUERR GMBH#HANS-JOACHIM-BALCKE-STRASSE#46049 OBERHAUSEN (DE) -TRANSFER TO- BALCKE-DUERR GMBH#ERNST-DIETRICH-PLATZ 2#40882 RATINGEN (DE)

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: BALCKE-DUERR GMBH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 502004011737

Country of ref document: DE

Date of ref document: 20101118

Kind code of ref document: P

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20101130

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20100402702

Country of ref document: GR

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Effective date: 20110202

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E009775

Country of ref document: HU

REG Reference to a national code

Ref country code: SK

Ref legal event code: T3

Ref document number: E 8691

Country of ref document: SK

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20110707

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: BALCKE-DUERR GMBH

Free format text: BALCKE-DUERR GMBH#ERNST-DIETRICH-PLATZ 2#40882 RATINGEN (DE) -TRANSFER TO- BALCKE-DUERR GMBH#ERNST-DIETRICH-PLATZ 2#40882 RATINGEN (DE)

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502004011737

Country of ref document: DE

Effective date: 20110707

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101006

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110607

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

REG Reference to a national code

Ref country code: CH

Ref legal event code: PCAR

Free format text: NEW ADDRESS: GARTENSTRASSE 28 A, 5400 BADEN (CH)

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502004011737

Country of ref document: DE

Owner name: HOWDEN ROTHEMUEHLE GMBH, DE

Free format text: FORMER OWNER: BALCKE DUERR GMBH, 40882 RATINGEN, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 502004011737

Country of ref document: DE

Representative=s name: LANG & TOMERIUS PATENTANWALTSPARTNERSCHAFT MBB, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502004011737

Country of ref document: DE

Owner name: BALCKE-DUERR ROTHEMUEHLE GMBH, DE

Free format text: FORMER OWNER: BALCKE DUERR GMBH, 40882 RATINGEN, DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: BALCKE-DUERR GMBH, DE

Free format text: FORMER OWNER: BALCKE-DUERR GMBH, DE

REG Reference to a national code

Ref country code: EE

Ref legal event code: GB1A

Ref document number: E004846

Country of ref document: EE

REG Reference to a national code

Ref country code: NL

Ref legal event code: PD

Owner name: BALCKE-DUERR ROTHEMUEHLE GMBH; DE

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), ASSIGNMENT; FORMER OWNER NAME: BALCKE-DUERR GMBH

Effective date: 20191205

REG Reference to a national code

Ref country code: SI

Ref legal event code: SP73

Owner name: BALCKE-DUERR ROTHEMUEHLE GMBH; DE

Effective date: 20191113

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20191212 AND 20191218

REG Reference to a national code

Ref country code: BE

Ref legal event code: PD

Owner name: BALCKE-DUERR ROTHEMUEHLE GMBH; DE

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), CESSION; FORMER OWNER NAME: BALCKE-DUERR GMBH

Effective date: 20191029

REG Reference to a national code

Ref country code: SK

Ref legal event code: PC4A

Ref document number: E 8691

Country of ref document: SK

Owner name: BALCKE-DUERR ROTHEMUEHLE GMBH, OLPE, DE

Free format text: FORMER OWNER: BALCKE-DUERR GMBH, DUESSELDORF, DE

Effective date: 20191219

Ref country code: SK

Ref legal event code: TE4A

Ref document number: E 8691

Country of ref document: SK

Owner name: BALCKE-DUERR GMBH, DUESSELDORF, DE

Effective date: 20191219

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

Owner name: BALCKE-DUERR ROTHEMUEHLE GMBH

Effective date: 20200204

REG Reference to a national code

Ref country code: AT

Ref legal event code: PC

Ref document number: 483524

Country of ref document: AT

Kind code of ref document: T

Owner name: BALCKE-DUERR ROTHEMUEHLE GMBH, DE

Effective date: 20200123

REG Reference to a national code

Ref country code: HU

Ref legal event code: FH1C

Free format text: FORMER REPRESENTATIVE(S): SIPOS JOZSEF, DANUBIA SZABADALMI ES JOGI IRODA KFT., HU

Representative=s name: DANUBIA SZABADALMI ES JOGI IRODA KFT., HU

Ref country code: HU

Ref legal event code: GB9C

Owner name: BALCKE-DUERR ROTHEMUEHLE GMBH, DE

Free format text: FORMER OWNER(S): BALCKE-DUERR GMBH, DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: HC

Owner name: HOWDEN ROTHEMUEHLE GMBH; DE

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), CHANGE OF OWNER(S) NAME; FORMER OWNER NAME: BALCKE-DUERR ROTHEMUEHLE GMBH

Effective date: 20230102

REG Reference to a national code

Ref country code: EE

Ref legal event code: HC1A

Ref document number: E004846

Country of ref document: EE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502004011737

Country of ref document: DE

Owner name: HOWDEN ROTHEMUEHLE GMBH, DE

Free format text: FORMER OWNER: BALCKE-DUERR ROTHEMUEHLE GMBH, 57462 OLPE, DE

REG Reference to a national code

Ref country code: SK

Ref legal event code: TC4A

Ref document number: E 8691

Country of ref document: SK

Owner name: HOWDEN ROTHEMUEHLE GMBH, OLPE, DE

Effective date: 20230109

REG Reference to a national code

Ref country code: HU

Ref legal event code: HC9C

Owner name: HOWDEN ROTHEMUEHLE GMBH, DE

Free format text: FORMER OWNER(S): BALCKE-DUERR GMBH, DE; BALCKE-DUERR ROTHEMUEHLE GMBH, DE

REG Reference to a national code

Ref country code: BE

Ref legal event code: HC

Owner name: HOWDEN ROTHEMUEHLE GMBH; DE

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), CHANGE OF OWNER(S) NAME; FORMER OWNER NAME: BALCKE-DUERR ROTHEMUEHLE GMBH

Effective date: 20221226

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

Owner name: HOWDEN ROTHEMUEHLE GMBH

Effective date: 20230227

REG Reference to a national code

Ref country code: SI

Ref legal event code: SP73

Owner name: HOWDEN ROTHEMUEHLE GMBH; DE

Effective date: 20230203

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230531

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: RO

Payment date: 20230525

Year of fee payment: 20

Ref country code: PT

Payment date: 20230529

Year of fee payment: 20

Ref country code: NL

Payment date: 20230626

Year of fee payment: 20

Ref country code: IE

Payment date: 20230627

Year of fee payment: 20

Ref country code: FR

Payment date: 20230626

Year of fee payment: 20

Ref country code: EE

Payment date: 20230518

Year of fee payment: 20

Ref country code: DK

Payment date: 20230628

Year of fee payment: 20

Ref country code: DE

Payment date: 20230626

Year of fee payment: 20

Ref country code: CZ

Payment date: 20230523

Year of fee payment: 20

Ref country code: BG

Payment date: 20230614

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20230526

Year of fee payment: 20

Ref country code: SK

Payment date: 20230518

Year of fee payment: 20

Ref country code: SI

Payment date: 20230519

Year of fee payment: 20

Ref country code: SE

Payment date: 20230627

Year of fee payment: 20

Ref country code: PL

Payment date: 20230523

Year of fee payment: 20

Ref country code: HU

Payment date: 20230525

Year of fee payment: 20

Ref country code: GR

Payment date: 20230629

Year of fee payment: 20

Ref country code: FI

Payment date: 20230626

Year of fee payment: 20

Ref country code: AT

Payment date: 20230519

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20230627

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502004011737

Country of ref document: DE

Representative=s name: MURGITROYD GERMANY PATENTANWALTSGESELLSCHAFT M, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20230620

Year of fee payment: 20

Ref country code: GB

Payment date: 20230627

Year of fee payment: 20

Ref country code: ES

Payment date: 20230703

Year of fee payment: 20

Ref country code: CH

Payment date: 20230702

Year of fee payment: 20

REG Reference to a national code

Ref country code: AT

Ref legal event code: HC

Ref document number: 483524

Country of ref document: AT

Kind code of ref document: T

Owner name: HOWDEN ROTHEMUEHLE GMBH, DE

Effective date: 20230928