EP2621636A1 - Kollektorstufe eines elektrostatischen abscheiders zur reinigung von aus verbrennungsprozessen entstandenem rauchgas - Google Patents
Kollektorstufe eines elektrostatischen abscheiders zur reinigung von aus verbrennungsprozessen entstandenem rauchgasInfo
- Publication number
- EP2621636A1 EP2621636A1 EP11773384.0A EP11773384A EP2621636A1 EP 2621636 A1 EP2621636 A1 EP 2621636A1 EP 11773384 A EP11773384 A EP 11773384A EP 2621636 A1 EP2621636 A1 EP 2621636A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- collector
- brush
- tube
- stage
- collector tube
- 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.)
- Granted
Links
- 239000012717 electrostatic precipitator Substances 0.000 title claims abstract description 16
- 239000003546 flue gas Substances 0.000 title claims abstract description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 6
- 238000004140 cleaning Methods 0.000 title abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 29
- 238000000746 purification Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims 1
- 238000001556 precipitation Methods 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 7
- 230000008021 deposition Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000012718 dry electrostatic precipitator Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- RSMUVYRMZCOLBH-UHFFFAOYSA-N metsulfuron methyl Chemical compound COC(=O)C1=CC=CC=C1S(=O)(=O)NC(=O)NC1=NC(C)=NC(OC)=N1 RSMUVYRMZCOLBH-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/74—Cleaning the electrodes
- B03C3/743—Cleaning the electrodes by using friction, e.g. by brushes or sliding elements
-
- 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
- B03C3/12—Plant or installations having external electricity supply dry type characterised by separation of ionising and collecting stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/41—Ionising-electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/49—Collecting-electrodes tubular
Definitions
- the invention relates to the collector stage of an electrostatic precipitator.
- Flue gases from combustion chambers, wood stoves or other wood burning equipment used for heating are treated.
- the flue gas to be purified is introduced into the ionization stage and flowed through the electric field between a high voltage electrode and a lying at a reference potential, usually ground potential electrode in which the particles are electrically charged via corona discharge at the high voltage electrode.
- a reference potential usually ground potential electrode in which the particles are electrically charged via corona discharge at the high voltage electrode.
- the charged particles are deposited there on the surface lying on the reference potential and electrically neutralized, with electrical forces additionally favoring the deposition due to space charge formation from charged particles after leaving the ionization stage and in the collector region.
- Electrostatic separators are generally used for gas purification.
- the method of aerosol collection in an electrostatic precipitator with space charge formation relies on the particle charge in a corona discharge and the deposition of unipolar charged particles corresponding to the field of their own space charge.
- the mechanism of deposition via space charge is described in [1].
- the collector of known electrostatic precipitators needs replacement and cleaning, i. Cleaning the duct or sewer pipe, the tube bundle and the collector chamber. Therefore, the electrostatic precipitator often has to be switched off, opened and closed. This increases the operating costs of the separator. Complicates the removal and installation of the unit as well as the setting of the ionization stage and the collector stage.
- the object of the invention is to propose a collector stage which avoids the disadvantages and limitations listed.
- the Effizenz should the particle separation can be increased from the gas stream.
- a collector stage in which the helical brush is mounted on an axis with a plurality of sections, wherein the sections are arranged offset from one another.
- the helical brush consists of a plurality of sections offset from each other centrally arranged coaxially to the collector tube sitting rod or tube, sitting on the outer surface radially protruding radially to the coil axis brush wires tuft-like, touching the collector tube with its free end and brush off the inner wall upon rotation of the brush , At least the inner wall of the collector tube and the seated therein brush are at a common electrical reference potential, usually ground potential. Therefore, the brush itself acts as a separation surface.
- the brush is thus a helical brush in several sections.
- Each of these sections consists of a rod o- the tube which is arranged centrally or coaxially to the collector tube in this and on the outer circumferential surface along a helical line tuft-like brush wires protrude.
- the sections are arranged axially one behind the other in the collector tube, wherein the protruding brush wires touch the inner wall of the collector tube.
- the sections are rotatable to the collector tube.
- the sections of the helical brush are offset from one another, ie angularly arranged (twisted Anorndung), ie the aforementioned helical line of helical brush on the lateral surfaces is interrupted by the transition between two sections and runs with an angular offset twisted to the previous section in the following section. ter.
- a transition between two sections there is a discontinuity of the helical line and thus the helical brush, ie the guided in the helical brush gas flow receives a deflection or an additional flow disturbance.
- the staggered arrangement of the brush segments in this case has the effect that, as the spiral brush flows through the particle-laden gas, brush elements serving as separation surfaces enter the flow path of the gas and thus increase the particle separation. This happens without an increase in the differential pressure in the collector tube.
- a method for operating the collector stage of the electrostatic precipitator consists of the following method steps:
- the particles of the flue gas which are electrically charged in a corona discharge of the ionizer are flowed into the collector stage, in which the electrically charged particles are partly deposited on the internal surface located on an electrical reference potential and are electrically neutralized; and, in part, the flowing, electrically charged particles form a space charge cloud in the collector from which the electrically charged particles electrically accelerate toward or drip onto the inner surface located at the electrical reference potential. These are also electrically neutralized upon impact and deposition.
- the helical brush is made of electrically conductive material, preferably metal or steel wires and is rotated in the collector tube during the gas flow at predetermined intervals, so that the deposited on the inner surface of the respective collector tube and electrically neutralized particles brushed and to the lowest Brushed area of a collector.
- the deposited on the helical brush itself and electrically neutral The particles that are deposited fall over the cleaning of the brush on the rail to the lowest lying area.
- Fig.l shows schematically the collector stage of an electrostatic precipitator. 2 shows three sections of the spiral brush, wherein the axes of the spiral brush sections are each arranged offset by 120 °.
- Fig.l shows the collector stage of an electrostatic precipitator consisting of an ionization stage 1 and the gas downstream, perpendicular collector stage 2.
- the ionization stage 1 is not subject of the invention, but indicated as a central part of the electrostatic precipitator in its contour. In it, indicated by an arrow raw or flue gas is introduced and charged the particles therein in a corona discharge.
- the collector stage 2 consists here of the one vertical collector tube 3, in which the coil around the rod or the tube 4 which winds like a vertically wound band 5 coaxial with the axis of the collector tube 3.
- the brush wires of the brush 5 are made of an electrically conductive material and their free ends always touch the inner collector wall of the collector tube 3.
- the ionization stage is upstream of the collector stage
- Fig.l The raw or flue gas flows in Fig.l right into the ionization stage 1 and clean leaves the collector stage 3 upwards (in Fig.l represented by two arrows indicated). This means that the raw or flue gas already is ionized by the ionization stage 1 and ionized enters the subsequent collector stage 3.
- the rod or tube 4 and thus the helical brush 5 consists, as shown in Fig. 2, of three sections, each offset, i. axially to the collector tube 3 twisted by 120 ° are arranged.
- a rigid and parallel to the axis of the collector tube 3 on the inner wall of the collector tube 3 seated rail 6 is shown for cleaning the brush 5.
- the solution of the object also comprises a method for operating a collector stage according to the above description, i. an electrostatic precipitator for the purification of flue gas produced from combustion processes, the separator consisting of an ionization stage 1 with flue gas inlet and the collector stage downstream of the gas collector with clean gas outlet.
- the process consists of the following process steps:
- the particles of the flue gas that are electrically charged in a corona discharge of the ionization stage 1 flow into the collector stage 2.
- a part of the flowing, electrically charged particles form a space charge cloud, with which the electrically charged particles are electrically accelerated toward the inner surface located on the electrical reference potential and deposited thereon upon impact and are electrically neutralized.
- the electrically charged particles are deposited at the internal reference potential. neren surface and also lying on a reference potential brush 5 deposited and electrically neutralized.
- the helical brush 5 is rotated in each collector tube 3 at predetermined intervals, so that brushed off on the inner surface of a collector tube 3 and electrically neutralized particles brushed and brushed to the lowest area of a collector 2.
- the self-deposited on the helical brush 5 and electrically neutralized particles fall on the cleaning of the brush 5 on the rail 6 to this lowest lying area from.
- the inner wall of the collector tube 3 is brushed free via the brush 5 and adjusted by the local heat transfer through the collector tube 3 to the environment, a temperature gradient from the center of the collector tube 3 ago.
- suspended particles are thermophoretically accelerated towards the inner wall of the collector tube 3 via the collector tube in this zone.
Landscapes
- Electrostatic Separation (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010046800A DE102010046800A1 (de) | 2010-09-28 | 2010-09-28 | Kollektorstufe eines elektrostatischen Abscheiders zur Reinigung von aus Verbrennungsprozessen entstandenem Rauchgas und Verfahren zum Betreiben |
| PCT/EP2011/004786 WO2012048794A1 (de) | 2010-09-28 | 2011-09-24 | Kollektorstufe eines elektrostatischen abscheiders zur reinigung von aus verbrennungsprozessen entstandenem rauchgas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2621636A1 true EP2621636A1 (de) | 2013-08-07 |
| EP2621636B1 EP2621636B1 (de) | 2017-05-17 |
Family
ID=44860283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11773384.0A Not-in-force EP2621636B1 (de) | 2010-09-28 | 2011-09-24 | Kollektorstufe eines elektrostatischen abscheiders zur reinigung von aus verbrennungsprozessen entstandenem rauchgas |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2621636B1 (de) |
| DE (1) | DE102010046800A1 (de) |
| WO (1) | WO2012048794A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015204168A1 (de) | 2015-03-09 | 2016-09-15 | Kutzner + Weber Gmbh | Elektrostatische Partikelabscheidevorrichtung |
| CN110237934B (zh) * | 2019-06-18 | 2020-07-14 | 大唐郓城发电有限公司 | 一种用于火力发电厂的除尘装置 |
| CN120169561B (zh) * | 2024-09-13 | 2025-11-28 | 四川中森佳科科技有限公司 | 一种电除尘器及使用方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2206056A1 (de) * | 1972-02-09 | 1973-08-16 | Dortmunder Brueckenbau C H Juc | Elektrofilter fuer rauchgase |
| DE3626002A1 (de) * | 1986-07-31 | 1988-02-04 | Erwin Junker | Vorrichtung zum reinigen von gasen |
| DE3707938A1 (de) * | 1987-03-12 | 1988-09-22 | Paul J M Haufe | Vorrichtung zur aufbereitung, insbesondere filtrierung, der raumluft |
| JPS6444050U (de) * | 1987-09-10 | 1989-03-16 | ||
| DE3927701A1 (de) * | 1989-08-25 | 1991-02-28 | Gnii Cvetnych Metallov Gincvet | Verfahren und anlage zur reinigung eines gases mit festen und gasfoermigen beimengungen |
| CH694645A5 (de) | 2003-12-01 | 2005-05-13 | Empa | Vorrichtung zur elektrostatischen Partikelabscheidung in Gasströmen. |
| DE102008012151A1 (de) | 2008-03-01 | 2009-09-10 | Forschungszentrum Karlsruhe Gmbh | Kollektorstufe eines elektrostatischen Abscheiders zur Reinigung von aus Verbrennungsprozessen entstandenem Rauchgas und Verfahren zum Betreiben |
| DE102008049211B4 (de) | 2008-09-27 | 2011-08-25 | Karlsruher Institut für Technologie, 76131 | Elektrostatischer Abscheider für die Reinigung von Rauchgasen |
-
2010
- 2010-09-28 DE DE102010046800A patent/DE102010046800A1/de not_active Withdrawn
-
2011
- 2011-09-24 EP EP11773384.0A patent/EP2621636B1/de not_active Not-in-force
- 2011-09-24 WO PCT/EP2011/004786 patent/WO2012048794A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012048794A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2621636B1 (de) | 2017-05-17 |
| WO2012048794A1 (de) | 2012-04-19 |
| DE102010046800A1 (de) | 2012-03-29 |
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