EP3705185A1 - Séparateur électrostatique pour la purification de gaz de fumée - Google Patents

Séparateur électrostatique pour la purification de gaz de fumée Download PDF

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Publication number
EP3705185A1
EP3705185A1 EP20020085.5A EP20020085A EP3705185A1 EP 3705185 A1 EP3705185 A1 EP 3705185A1 EP 20020085 A EP20020085 A EP 20020085A EP 3705185 A1 EP3705185 A1 EP 3705185A1
Authority
EP
European Patent Office
Prior art keywords
flow channel
corona discharge
electrostatic precipitator
channel section
collecting container
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.)
Pending
Application number
EP20020085.5A
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German (de)
English (en)
Inventor
Andrei Bologa
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.)
Karlsruher Institut fuer Technologie KIT
Original Assignee
Karlsruher Institut fuer Technologie KIT
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 Karlsruher Institut fuer Technologie KIT filed Critical Karlsruher Institut fuer Technologie KIT
Publication of EP3705185A1 publication Critical patent/EP3705185A1/fr
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/41—Ionising-electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • 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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/36—Controlling flow of gases or vapour
    • B03C3/361—Controlling flow of gases or vapour by static mechanical means, e.g. deflector
    • B03C3/366—Controlling flow of gases or vapour by static mechanical means, e.g. deflector located in the filter, e.g. special shape of the electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/49—Collecting-electrodes tubular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/66—Applications of electricity supply techniques
    • B03C3/70—Applications of electricity supply techniques insulating in electric separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/74—Cleaning the electrodes
    • B03C3/76—Cleaning the electrodes by using a mechanical vibrator, e.g. rapping gear ; by using impact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/10—Ionising electrode with two or more serrated ends or sides
    • 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
    • B03C2201/28—Parts being designed to be removed for cleaning purposes

Definitions

  • the invention relates to an electrostatic separator for cleaning flue gases, preferably from technical conversion processes, preferably combustion processes such as e.g. from small combustion systems, ovens, combustion engines or other incineration systems.
  • Flue gases are particulate gases with solid and / or liquid components. They have a gaseous carrier component in which solid particles and / or liquid drops are suspended.
  • a preferred use of the electrostatic separator is the cleaning of flue gases from small incineration plants such as incinerators for biomass, coke, coal, fuel oils, wood, wood pellets or other fossil fuels.
  • Electrostatic precipitators have a wide range of uses for cleaning aerosols.
  • electrostatic precipitators which send particles of combustion gas through an ionizer, in which they are charged in a corona discharge which is generated at the sharp edges of a high-voltage electrode.
  • the collector pipe of the separator is earthed. Charged particles are collected on the inner surface of the collector tube, mainly gas downstream of the ionizer.
  • an electrostatic precipitator for cleaning flue gases from wood-burning stoves or stationary diesel engines. It consists of a housing with at least one gas inlet and one gas outlet. The gas inlet is followed in the direction of flow by a downwardly leading, tubular first flow channel section with a non-corona agglomerator, followed by a corona discharger, which opens into a covered shaft for collecting separated soot particles.
  • the tubular second flow channel section follows from the covered shaft in the direction of flow, leading upwards, which opens into a gas outlet and is equipped as a collector with a rotatable, helical brush.
  • one object of the invention is to design a concept for electrostatic separation for cleaning flue gases in such a way that it is particularly suitable for use with small combustion systems, especially in confined spaces or in environments sensitive to emissions such as is suitable, for example, in buildings and is characterized by particularly safe handling.
  • an electrostatic separator for the cleaning of flue gases, comprising a housing with a preferably downwardly removable collecting container for separated particles, a gas inlet and a gas outlet and between a flow channel arranged in the housing and routed past the collecting container.
  • the flow channel After the gas inlet downstream, the flow channel initially follows a downwardly directed first flow channel section and from there opens into a flow deflector, from there into an upwardly directed second flow channel section of the flow channel and from which it exits into the gas outlet.
  • a corona discharge arrangement is arranged in the flow channel, comprising at least one, preferably two disc-shaped corona discharge electrodes and separation surfaces, suitable for the formation of a circumferential electrical field between the corona discharge electrode and the separation surfaces as counter-electrodes.
  • these are arranged in series in the flow channel in the direction of flow and are preferably electrically connected to one another.
  • the disk-shaped corona discharge electrodes are preferably arranged orthogonally to the direction of flow in the flow channel, with the result that the flue gas flow in the flow channel is deflected through the electric field as homogeneously as possible over the entire field.
  • the shortest distance between the circumferential edge of the corona discharge electrode and the closest inner wall is preferably the same.
  • the electric field between the circumferential edge of a corona discharge electrode and the shortest distance in each case to the inner wall is at a maximum.
  • a preferred embodiment of the at least one disk-shaped corona discharge electrode is characterized in that it has circumferentially radially protruding electrode tips, the distance between the electrode tips then being decisive as the shortest distance and preferably uniformly the same to the closest deposition surface.
  • the separation surfaces are formed by the inner wall areas of the flow channel.
  • the separation surfaces in the flow channel are preferably grounded (zero potential), while the at least one corona discharge electrode is preferably connected to a preferably common high-voltage source and through this has a potential difference to the zero potential, preferably a negative direct voltage potential.
  • the housing or at least the inner walls of the flow channel or at least the separation surfaces are electrically conductive or coated in a conductive manner.
  • the separation surfaces extend in their entirety basically over all electrically conductive or conductive coated inner walls of the flow channel, which are electrically connected to one another and are thereby subjected to the same potential to one another.
  • the entire inner surface of the electrostatic precipitator forms the collecting surface for particles: particles are released from the gas flow after passing through the gas inlet and prior to reaching the corona discharge arrangement, first deposited as a gas-dynamic and mechanical precipitate on the inner walls, in particular of the first flow channel section, due to gas-dynamic phenomena.
  • the deposition takes place increasingly electrostatically in the corona discharge field, the particles being deposited essentially as particle deposits on the grounded inner wall areas. This deposition is repeated in the case of the second and possibly further corona discharge electrodes following the first corona discharge electrode. Deposition also takes place on the surfaces of the corona discharge electrodes (gas dynamic effects, mechanical collecting and collecting under the influence of electrical wind).
  • particles are also deposited on the upward-facing surfaces of the first and second and, if applicable, subsequent disc-shaped corona discharge electrodes (gas-dynamic effects, mechanical precipitation, partially electrostatic separation of positively charged particles from the gas flow on the surface of the high-voltage electrode with negative polarity, electrical precipitation Wind).
  • Particles are deposited on the inner surface of the collecting container, which is also earthed. This deposition takes place due to space charge effects by means of mechanical forces, thermophoretic forces, electrical field forces between the inner surface of the collecting container and the rigid support between the corona discharge electrodes.
  • the inner walls of the second flow channel section following the corona discharge electrodes in the direction of flow also under the influence of space charge effects, a further separation of charged particles takes place.
  • An essential basic idea of the invention is to completely or partially, preferably predominantly, cover the separation surfaces through inner walls of the collecting container form.
  • the separation surfaces or some of the separation surfaces extend onto the inner wall of the collecting container, which thus forms part of the aforementioned inner wall of the flow channel.
  • the collecting container and thus the inner walls are electrically conductive or have a conductive coating and form the aforementioned inner wall of the flow channel.
  • the collecting container and thus the inner walls are electrically conductive or coated for this purpose.
  • a preferred embodiment also provides for at least one of the, preferably all, disk-shaped corona discharge electrodes to be arranged in the collecting container, i. they are not arranged in the interior of the housing, but at least partially protrude from the housing and into the collecting container.
  • a preferred embodiment is characterized in that only the areas on the separation surfaces with the shortest distance from one of the electrodes are entirely or partially, preferably predominantly, formed by inner walls of the collecting container.
  • Another preferred embodiment is characterized in that only the areas on the separation surfaces with the shortest distance plus a maximum of 50%, more preferably 20%, more preferably 10% of the shortest distance to one of the electrodes are wholly or partially, preferably predominantly are formed by inner walls of the collecting container.
  • the at least one corona discharge electrode is preferably through, preferably only through a rigid high-voltage line fixed in the flow channel and connected via this to a high voltage source outside the housing. It goes without saying that only if the high-voltage line and the electrically conductive inner wall of the flow channel are insulated from one another is the aforementioned potential difference between the corona discharge electrode and the inner wall as separation surfaces possible at all.
  • the rigid high-voltage line ends at a first corona discharge electrode.
  • the corona discharge electrodes are connected to one another by an electrically conductive rigid connection, e.g. a rigid metal beam connected to each other.
  • the rigid high voltage line is preferably axially in the first flow channel section, i. aligned with its free end downwards and has no electrical contact with the inner wall.
  • the distance from the high-voltage line to the inner wall away from the at least corona discharge electrode to avoid deposits is also preferably greater than the aforementioned shortest distance between the circumferential edge of the corona discharge electrode and the closest inner wall.
  • the high-voltage line is led out of the flow channel preferably via a gas-impermeable high-voltage leadthrough away from the gas inlet.
  • the gas-impermeable high-voltage bushing is provided away from the gas inlet.
  • a tubular electrical insulator is preferably also arranged around the high-voltage line on the high-voltage line in the flow channel itself.
  • This insulator preferably extends from the gas-impermeable high-voltage bushing to shortly before or to the first electrode and electrically insulates the high-voltage line from the first flow channel section.
  • the tubular electrical insulator also serves to improve the operational stability of the separator, to extend the length of the insulating surface between the aforementioned separation surface and high-voltage line, and to reduce electrical leakage currents.
  • the tubular electrical insulator In order to prevent the risk of a short circuit at the end of the insulator, it is proposed within the scope of one embodiment to configure the tubular electrical insulator so that it has an inner diameter greater than the outer diameter of the rigid high-voltage line. Between the high-voltage line and the tubular insulator, there is thus a clearance and thus a circumferential gap, the tubular electrical insulator being advantageously suspended from the gas-impermeable high-voltage bushing and the gap thus only being open at the bottom.
  • This gap especially when the gap width changes during operation, fundamentally makes it difficult to achieve a continuous deposit coating over the transition between the insulator and the high-voltage line across the open end of the gap.
  • the tubular insulator preferably consists of a hose made of an elastic or pliable material, preferably a silicone, a silicone-containing material or another temperature-resistant elastic material.
  • the tubular insulator can be elastically fixed in the aforementioned suspension. This has the advantageous effect that the insulator is moved relative to the high-voltage line by the flow of flue gas, thereby causing the aforementioned to move
  • the gap changes dynamically with the flow and possible deposits in and on the gap are loosened. Since the high-voltage line with the insulator is arranged in the first downward flow channel section from above at the high-voltage bushing down to the gap, the released deposits in the gap are carried downward out of the gap by gravity alone, thereby stabilizing the gap.
  • the tubular electrical insulator preferably ends at a predeterminable fixed distance before it is reached, ie above a first of the at least one corona discharge electrode. This prevents the particles deposited on the first of the at least one corona discharge electrode from reaching the lower end of the insulator as bulk material and possibly causing a short circuit or a leakage current path.
  • This bed is created on the upward-facing surface of the corona discharge electrode, in that there is accumulation of particle masses discharged from the gap or directly from the flue gas.
  • Said fixed distance preferably corresponds to between 10%, 20% or 30% to 50%, 70% or 80% of the maximum dimension of the first of the at least one disk-shaped corona discharge electrode.
  • the fixed distance is typically between 2 and 15 cm.
  • An optional temperature sensor for the flow channel is advantageous for operating the electrostatic separator for flue gas cleaning of combustion processes.
  • the flue gas cleaning can be activated or deactivated by applying an HV voltage to the at least one corona discharge electrode.
  • the temperature is detected by at least one temperature detection sensor in the first flow channel section or on the housing near the first flow channel section.
  • the high voltage only be switched through to the at least one corona discharge electrode above 50 ° C to 70 ° C, preferably above 60 ° C, measured with the temperature detection sensor in the first flow channel cross section, and thus activate the electrostatic separation.
  • the illustrated embodiments show a housing 1 of the electrostatic precipitator with a gas inlet 2 and a gas outlet 3 and a flow channel arranged between these in the housing, comprising a first flow channel section 5 directed downwards in flow direction 4 , a flow deflector 6 following the first flow channel section into an upwardly directed second Flow channel section 7 of the flow channel.
  • the housing 1 itself is open at the bottom, but is closed to the outside by a collecting container 8 closing the opening with handles on both sides.
  • the housing and / or the collecting container are preferably made of metal and grounded in the exemplary embodiment.
  • Fig.1a shows an embodiment with laterally arranged gas inlet and gas outlet for use, for example, in a horizontal exhaust line, for example in a transition line between a furnace and a chimney shaft.
  • Fig.1b shows, however, an embodiment with a laterally arranged gas inlet and upwardly directed gas outlet, for example suitable for installation in a chimney shaft, into which the gas outlet opens directly.
  • FIG.1a In the representation of a first embodiment according to Fig.1a are the circumferential lines or separations of the individual components to highlight the continuous flow channel in contrast to the illustration in Fig.1b not shown.
  • first and second flow channel sections 5 and 7 are arranged parallel to one another, more preferably arranged vertically parallel to one another.
  • the illustrated embodiments each include a corona discharge arrangement in the flow channel with two disc-shaped corona discharge electrodes 9 and 10 as well as separation surfaces 11 , suitable for forming a rotating electrical field 12 between the corona discharge electrode and the separation surfaces.
  • the two corona discharge electrodes are preferably each arranged one before and one after the flow deflector 6 .
  • the at least one corona discharge electrode is more preferably oriented orthogonally to the first and / or the second flow channel section. With a vertical alignment of the flow channel sections mentioned, the disk-shaped corona discharge electrodes are aligned horizontally.
  • the corona discharge electrodes 9 and 10 are as particularly in FIG Fig. 2 shown not arranged in the housing 1 , but protrude downward from the housing 1 . As in Fig.1a and b , they are arranged inside the collecting container 8 . Likewise, the areas on the separation surfaces with the shortest distance from one of the electrodes are entirely or partially, preferably predominantly formed by inner walls of the collecting container.
  • the two corona discharge electrodes 9 and 10 have, as in FIG Fig. 3 to be recognized schematically, circumferentially radially protruding electrode tips 25 , around which the field strengths of the electric field 12 are maximum. These electrode tips each preferably have the same distance A from the respectively closest deposition surface, so that the electric fields have approximately the same field strength over the entire circumference of the corona discharge electrodes.
  • the two corona discharge electrodes 9 and 10 are also, as in FIG Fig. 4 shown, connected to one another by an electrically conductive rigid support 13 along the flow deflector 6 , whereby one and the same electrical potential is applied to these.
  • the rigid support is only connected to the corona discharge electrodes (electrically conductive), positions them relative to one another in the flow channel and preferably has no connection to other components, in particular to the inner walls of the flow channel, in particular in the area of the flow deflector 6 .
  • the carrier is preferably a sheet metal carrier, the sheet metal being arranged as upright as possible, ie vertically and as aixal in the flow channel in the area of the deflector 6 for the benefit of a minimal pressure drop in the gas flow, in order to avoid or reduce the build-up of particles.
  • a rigid high-voltage line 15 is arranged axially in the first flow channel section 6 , which serves both as a carrier element for fixing the corona discharge electrodes 9 and 10 in the flow channel and as an electrical connection for these to a high-voltage source 16 .
  • the high-voltage line is led out and held through a high-voltage bushing 17 with a preferably ceramic element 18 , alternatively a glass element as an electrical insulator to the housing 1 from the upper end of the first flow channel 5 .
  • an elastic or limp tubular electrical insulation preferably a silicone hose 19 is provided around the high-voltage line, which has a larger inner diameter than the outer diameter of the high-voltage line with the formation of an annular gap 21 .
  • the hose end 20 of the silicone hose 19 ends as previously explained and in FIG Fig. 5 shown at a fixed distance H above the first corona discharge electrode 9.
  • the height H preferably exceeds the maximum possible bed height of the particle bed 22 on the first corona discharge electrode 9 , so that between the particle deposits 23 on the silicone hose 19 at the lower end of the hose 20 and the aforementioned particle bed 22 on the first corona discharge electrode 9.
  • the corona discharge electrodes are acted upon by the high-voltage source 16 , preferably in a temperature-controlled manner, with a potential difference only being fed in from an adjustable operating temperature. It is proposed that at least one temperature detection be carried out in the first flow channel section 5 above the gas inlet 2 . This is done either selectively by means of a temperature detection sensor 24 , as in FIG Fig.1a shown, in the inner volume or integrally over the wall surface, as in Fig.1b shown, on the upper wall of the first flow channel section near the high-voltage bushing 17.
  • a flow around the elastic or limp tubular electrical insulation, preferably the silicone hose, with flue gas advantageously causes a continuous or recurring movement of the hose end around the high-voltage line.
  • the associated constant changes in the width of the gap 21 in the region of the hose end 20 lead to a detachment of particles from particles deposited on the hose and / or high-voltage line, in particular in the gap.
  • the detached particles or particle agglomerates then fall, following the force of gravity, onto the top of the first corona discharge electrode 9.
  • first flow channel section 5 it is optionally provided with corresponding sources of flow disturbance, not shown in the figures, such as baffles and / or tear-off edges, in which turbulence is generated locally and its flow trailing onto the hose end 20 , but more preferably not extends to the aforementioned electrical fields 12 around the first corona discharge electrode 9 .
  • sources of flow disturbance not shown in the figures, such as baffles and / or tear-off edges, in which turbulence is generated locally and its flow trailing onto the hose end 20 , but more preferably not extends to the aforementioned electrical fields 12 around the first corona discharge electrode 9 .
  • a particularly preferred embodiment of the aforementioned compact structure provides a housing 1 which encloses a cylindrical internal volume (cf. Fig. 3 ), which is divided above the flow deflector 6 by a partition 14 with an electrically conductive and grounded surface as part of the separation surfaces into two semi-cylindrical partial volumes, one of the partial volumes forming the first and second flow channel sections.
  • This advantageously favors a cylindrical outer contour of the housing 1 of the electrostatic precipitator and thus also a design as a collecting container 8 as a cylindrical pot preferred uniform inner and outer diameter, ie a stepless transition in particular of the inner walls between the housing and the collecting container.
  • the collecting container can be attached to the lower opening of the housing and can be locked, for example, with a bayonet connection or with clamps.
  • a pair of sealing surfaces adapted to one another is optionally provided with a separate encircling sealing ring there.
  • the collecting container and the housing at least their inner walls, which form the flow channel, have the same electrical potential as the housing, preferably earth or zero potential.
  • the collecting container and the housing have a different electrical potential applied to them, with which different electrostatic attractive forces to the respective inner walls of the housing, i.e. first or second flow channel section, and sump, i.e. can be implemented in the area of flow deflection.
  • the partition 14 and the first and second flow channel sections 5 and 7 extend from above into the collecting container 8 , while the area of the flow deflector 6 is provided below the partition 14 in the collecting container.
  • a corona discharge electrode is arranged in each of the two flow channel sections on both sides of the dividing wall in the collecting container, which electrodes likewise protrude into the collecting container arranged on both sides of the dividing wall. The area of the inner wall of the flow channel, which is closest to the corona discharge electrodes, is thus shifted to the lower part of the partition and, like this, also into the collecting container.
  • the separation surfaces are shifted towards the inner walls of the collecting container, whereby the particle deposits advantageously take place directly in the collecting container and can be removed with this directly from the electrostatic separator.
  • the corona discharge electrodes are accessible for cleaning, for example of deposits in the area of the high-voltage line.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrostatic Separation (AREA)
EP20020085.5A 2019-03-07 2020-02-24 Séparateur électrostatique pour la purification de gaz de fumée Pending EP3705185A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019105776.0A DE102019105776A1 (de) 2019-03-07 2019-03-07 Elektrostatischer Abscheider für die Reinigung von Rauchgasen

Publications (1)

Publication Number Publication Date
EP3705185A1 true EP3705185A1 (fr) 2020-09-09

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EP20020085.5A Pending EP3705185A1 (fr) 2019-03-07 2020-02-24 Séparateur électrostatique pour la purification de gaz de fumée

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DE (1) DE102019105776A1 (fr)

Cited By (2)

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CN115007313A (zh) * 2022-06-09 2022-09-06 李亮 一种可防回风的卧式静电除尘器及其实施方法
CN117283905A (zh) * 2023-09-08 2023-12-26 浙江跃发新材料有限公司 一种塑料包装袋表面局部电晕生产工艺

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Publication number Priority date Publication date Assignee Title
DE102020133670A1 (de) 2020-12-16 2022-06-23 Karlsruher Institut für Technologie Elektrostatischer Abscheider für die Reinigung und Desinfektion von Gasen
DE102021125149A1 (de) 2021-09-28 2023-03-30 Karl Schräder Nachf. Inh. Karl-Heinz Schräder e. K. Rauchgasreinigungsvorrichtung

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