EP0688246B1 - Verfahren und vorrichtung zum elektrostatischen abscheiden von verunreinigungen, wie schwebstoffe oder dergleichen aus einem gasstrom - Google Patents
Verfahren und vorrichtung zum elektrostatischen abscheiden von verunreinigungen, wie schwebstoffe oder dergleichen aus einem gasstrom Download PDFInfo
- Publication number
- EP0688246B1 EP0688246B1 EP95906922A EP95906922A EP0688246B1 EP 0688246 B1 EP0688246 B1 EP 0688246B1 EP 95906922 A EP95906922 A EP 95906922A EP 95906922 A EP95906922 A EP 95906922A EP 0688246 B1 EP0688246 B1 EP 0688246B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas flow
- impurities
- openings
- precipitation electrode
- ionization source
- 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
Links
- 239000012535 impurity Substances 0.000 title claims description 16
- 238000000926 separation method Methods 0.000 title description 16
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000001556 precipitation Methods 0.000 claims abstract 11
- 230000001376 precipitating effect Effects 0.000 claims abstract 4
- 239000011888 foil Substances 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002245 particle Substances 0.000 description 18
- 238000000151 deposition Methods 0.000 description 13
- 230000008021 deposition Effects 0.000 description 13
- 239000007921 spray Substances 0.000 description 8
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 5
- 239000000356 contaminant Substances 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 230000005686 electrostatic field Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 208000006673 asthma Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004924 electrostatic deposition Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
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
- B03C3/02—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
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
- B03C3/09—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces at right angles to the gas stream
Definitions
- the invention relates to a method and a Device for the electrostatic deposition of Impurities, according to the generic terms of corresponding claims 1 and 2.
- Generic devices are e.g. from GB-A-1 267 777, GB-A-746 324 and US-A-2 142 128.
- this object is achieved according to the invention solved that the gas flow through the opening at its edges out towards tapered openings.
- this object is achieved in that the edges of the openings of the perforated plate to their respective Taper the opening towards the cutting edge.
- a sharp concentration of field lines and therefore high separation forces are achieved according to the invention in that the edges of the openings of the perforated plate to their respective Taper the opening towards the cutting edge.
- one main dimension of the openings each in the range between 50 and 500 microns, preferably between 100 and 250 microns.
- the perforated plate as a perforated screen film is trained. Since the screen film is correspondingly thin, are the edges of the holes correspondingly sharp, so that a strong Concentration of field lines and thus high separation forces occur.
- Another advantage of a screen filter is: easy cleaning, e.g. in a dishwasher, and in reusability.
- the openings are designed as elongated slots the slot width is between 50 and 500 ⁇ m should be.
- a particularly favorable type of for the purposes Production of the perforated plate is that the screen film is produced by electrodeposition of metals. Due to the galvanic production of the screen foil, in produce sharp-edged perforated edges in a particularly favorable manner, as is known for example from shaving foils for electric shavers is. By coating with silver one can achieve antibacterial effect. Sterilization is also possible possible possible by baking out.
- the Perforated plates of the separating electrode in a favorable manner truncated pyramids, opening towards the ionization source, Be put together.
- the gas flow that goes through first the ionization source is therefore practically in a kind of bag and can be caught through the wall of the bag escape.
- the ionization source can advantageously consist of several needle-shaped spray electrodes exist. According to a structural The electrodes of the ionization source are negative and the deposition electrode is positively charged.
- a counter electrode which has the same charge as the ionization source.
- the loaded ones Particles passing through the holes of the deposition electrode pass through, are animated by the field of the counter electrode, to settle on the back of the deposition electrode.
- the counter electrode has substantially the same shape as that Separation electrode, so that between the separation electrode and There is always the same distance to the counter electrode.
- the flow resistance of the device is quite small to hold the holes in the counter electrode may be larger than in the deposition electrode.
- the hole size should be chosen this way be that in the vicinity of the deposition electrode a uniform Field prevails.
- the device according to FIG. 1 initially includes a housing 1 a flow inlet 2 and a flow outlet 3.
- Am A coarse filter 4 can be provided at the flow inlet, for example a fabric covering.
- Behind the flow entrance 2 an ionization source is provided, which in the present case consists of a plurality of needles 5. These needles 5 are all connected to a negative voltage source of about 4kV and act as spray electrodes in such a way that the Particles negatively charged in the vicinity of the needles become.
- the Opening edge of the slots 9 cut like a cut toward the opening.
- the Screen foils are made by electrodeposition of metals.
- a counter electrode can be located behind the deposition electrode 6 13 can be provided, which is loaded as well as the Ionization source.
- the negatively charged impurities, that pass through the deposition electrode are from repelled this additional electrode, causing the Particle separation on the back of the separation electrode reinforced.
- the device first sucks one contaminated gas stream 11 through the flow inlet 2. Due to the needles 5 acting as spray electrodes individual particles of the contaminated gas stream with a negative charge. The contaminants so loaded enter into the truncated pyramid-shaped structure that the Sieve films 7 and 8 is surrounded. The gas flow can only be through the individual slots 9 in the sieve films through the filter step through. What happens to the individual particles can best be seen from the "hole situation" shown in FIG. being represented. The gas flow must pass through a variety of Pass through slots 9.
- Particles such as particle A that lie on the edge of such a branch of flow collide because of their sluggishness, especially when they are something are larger, on the front of the screen film.
- This Effect is enhanced by the additional electric field.
- Smaller particles that are further in the middle of a Partial flow, such as particles B and C, will follow the gas flow through slot 9. Due to the sharp formation of the edges of the slots 9 pass through Particles B and C but an extremely strong electric field that already while passing the slot to a side Deflection of the particles leads. As soon as the partial flow of the gas Has passed slot 9, the partial flow expands and grants the Particles B and C have a velocity component parallel to them Sieve foil 8.
- Electrostatic filters have a relatively small size.
- the electrostatic precipitator can handle such low voltages operated that no ozone is released.
Landscapes
- Electrostatic Separation (AREA)
Description
- Fig. 1
- in einer schematischen Schnittansicht eine erfindungsgemäße Vorrichtung und
- Fig. 2
- in einer übertrieben starken Vergrößerung eine "Lochsituation" entsprechend der Detailansicht II aus Fig. 1
Claims (14)
- Verfahren zum elektrostatischen Abscheiden von Verunreinigungen, wie Schwebstoffen oder dergleichen aus einem Gasstrom, wobei der Gasstrom zunächst zum Beladen der Verunreinigungen einer Ionisationsquelle zugeführt wird, wonach die Verunreinigungen aufgrund ihrer Ladung von einer entgegengesetzt gepolten Abscheideelektrode angezogen und an diese abgeschieden werden, wobei der Gasstrom im wesentlichen
vollständig durch die Öffnungen einer als Abscheideelektrode verwendeten Lochplatte geführt wird, deren Öffnungsabmessungen derart bemessen sind, daß zumindest ein Teil der Verunreinigungen durch die Öffnungen hindurchtreten können, dadurch gekennzeichnet, daß der Gasstrom durch die sich an ihren Rändern zur Öffnung hin schneidenartig verjüngenden Öffnungen gegeführt wird. - Vorrichtung zum elektrostatischen Abscheiden von Verunreinigungen, wie Schwebstoffe oder dergleichen aus einem Gasstrom, mit mindestens einer ersten Elektrode als einer Ionisationsquelle zum Beladen der Verunreinigungen und mit mindestens einer zweiten, entgegengesetzt gepolten Abscheideelektrode (6) zum Abscheiden der ionisierten Verunreinigungen aus dem Gasstrom, wobei die
Abscheideelektrode (6) als ein für den Gasstrom (11) und zumindest einen Teil der Verunreinigungen (B,C) durchlässige Lochplatte ausgebildet ist, die derart im Gasstrom angeordnet ist, daß der Gasstrom die Öffnungen der Lochplatte vollständig passieren muß, dadurch gekennzeichnet, daß sich die Ränder der Öffnungen (9) der Lochplatte zu ihrer jeweiligen Öffnung (9) hin scheidenartig verjüngen. - Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß eine Hauptabmessung der Öffnungen im Bereich zwischen 50 und 500 µm, vorzugsweise 100 und 250 µm, liegt.
- Vorrichtung nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, daß die Lochplatte als gelochte Siebfolie (7,8) ausgebildet ist.
- Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Öffnungen als Schlitze (9) ausgebildet sind.
- Vorrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß die Siebfolie durch galvanisches Abscheiden von Metallen hergestellt ist.
- Vorrichtung nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß die Lochplatten der Abscheideelektrode (6) zu einem pyramidenstumpfförmigen, sich zur Ionisationsquelle (5) öffnenden Gebilde zusammengesetzt sind.
- Vorrichtung nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, daß in Strömungsrichtung des Gasstromes hinter der Abscheideelektrode (6) ein Ventilator (10) angeordnet ist.
- Vorrichtung nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß die Ionisationsquelle aus mehreren, nadelförmigen Sprühelektroden (5) besteht.
- Vorrichtung nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß die Ionisationsquelle aus mehreren Sprühelektroden in Form von Kohlefaserbüscheln besteht.
- Vorrichtung nach einem der Ansprüche 2 bis 10, dadurch gekennzeichnet, daß hinter der Abscheideelektrode (6) eine Gegenelektrode (13) angeordnet ist, die die gleiche Ladung aufweist, wie die Ionisationsquelle.
- Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die Gegenelektrode (13) der Form der Abscheideelektrode (6) angepaßt ist, und zu dieser im wesentlichen überall den gleichen Abstand aufweist.
- Vorrichtung nach einem der Ansprüche 11 oder 12, dadurch gekennzeichnet, daß die Gegenelektrode ebenfalls als Lochplatte ausgebildet ist, jedoch mit größeren Löchern als die der Abscheideelektrode (6).
- Vorrichtung nach einem der Ansprüche 2 bis 13, dadurch gekennzeichnet, daß die Elektroden der Ionisationsquelle negativ und die Abscheideelektrode (6) positiv geladen sind.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4400420A DE4400420A1 (de) | 1994-01-10 | 1994-01-10 | Verfahren und Vorrichtung zum elektrostatischen Abscheiden von Verunreinigungen, wie Schwebstoffe oder dergleichen aus einem Gasstrom |
| DE4400420 | 1994-01-10 | ||
| PCT/EP1995/000073 WO1995018680A1 (de) | 1994-01-10 | 1995-01-10 | Verfahren und vorrichtung zum elektrostatischen abscheiden von verunreinigungen, wie schwebstoffe oder dergleichen aus einem gasstrom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0688246A1 EP0688246A1 (de) | 1995-12-27 |
| EP0688246B1 true EP0688246B1 (de) | 1999-04-28 |
Family
ID=6507626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95906922A Expired - Lifetime EP0688246B1 (de) | 1994-01-10 | 1995-01-10 | Verfahren und vorrichtung zum elektrostatischen abscheiden von verunreinigungen, wie schwebstoffe oder dergleichen aus einem gasstrom |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5837035A (de) |
| EP (1) | EP0688246B1 (de) |
| JP (1) | JPH08508934A (de) |
| AT (1) | ATE179346T1 (de) |
| DE (2) | DE4400420A1 (de) |
| WO (1) | WO1995018680A1 (de) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3046951B2 (ja) * | 1998-04-27 | 2000-05-29 | 株式会社セイスイ | 空気清浄化装置 |
| US7318856B2 (en) * | 1998-11-05 | 2008-01-15 | Sharper Image Corporation | Air treatment apparatus having an electrode extending along an axis which is substantially perpendicular to an air flow path |
| US6228149B1 (en) * | 1999-01-20 | 2001-05-08 | Patterson Technique, Inc. | Method and apparatus for moving, filtering and ionizing air |
| US6454839B1 (en) * | 1999-10-19 | 2002-09-24 | 3M Innovative Properties Company | Electrofiltration apparatus |
| JP2001239131A (ja) * | 2000-02-29 | 2001-09-04 | Mamoru Nakasuji | 脱硫・脱硝装置及びボイラー装置 |
| CN1232355C (zh) * | 2000-03-03 | 2005-12-21 | 松下环境系统株式会社 | 集尘装置及空调装置 |
| JP2002126576A (ja) * | 2000-10-25 | 2002-05-08 | Ricoh Elemex Corp | 電気集塵用電極とそれを用いた空気清浄機 |
| SE516188C2 (sv) * | 2000-10-27 | 2001-11-26 | Rolf Nybom | Anordning för att med hjälp av en jonisator ur luft samla upp laddade partiklar för analysändamål |
| US6544317B2 (en) | 2001-03-21 | 2003-04-08 | Energy & Environmental Research Center Foundation | Advanced hybrid particulate collector and method of operation |
| US6919053B2 (en) * | 2002-02-07 | 2005-07-19 | Constantinos J. Joannou | Portable ion generator and dust collector |
| JP2005525221A (ja) * | 2002-02-07 | 2005-08-25 | ヘッドウォーターズ, インコーポレイテッド | 空気循環・イオン化方式空気清浄機 |
| US6911593B2 (en) * | 2002-09-24 | 2005-06-28 | Board Of Trustees Of The University Of Arkansas | Transparent self-cleaning dust shield |
| GB0225711D0 (en) * | 2002-11-05 | 2002-12-11 | Tec Ltd | Improvements in and relating to gas cleaning devices |
| US20040250712A1 (en) * | 2002-12-31 | 2004-12-16 | Tippey Darold D. | Process of packaging a compressible article |
| US20040226445A1 (en) * | 2003-05-13 | 2004-11-18 | Ma Laboratories, Inc. | Air purifier |
| US6951582B1 (en) * | 2004-11-04 | 2005-10-04 | Sung-Lin Tsai | Air purifier device |
| RU2339453C1 (ru) * | 2007-07-03 | 2008-11-27 | Государственное образовательное учреждение высшего профессионального образования "Сибирский государственный технологический университет" | Фильтр тонкой очистки воздуха |
| AU2008205431A1 (en) * | 2007-08-31 | 2009-03-19 | Yoshiyasu Ehara | Electric dust collector |
| FR2929860B1 (fr) * | 2008-04-11 | 2010-12-17 | Commissariat Energie Atomique | Dispositif d'extraction de particules de l'haleine expiree |
| US8106367B2 (en) * | 2009-12-30 | 2012-01-31 | Filt Air Ltd. | Method and ionizer for bipolar ion generation |
| JP5209753B2 (ja) * | 2011-04-12 | 2013-06-12 | マックス株式会社 | 換気システム |
| KR102481567B1 (ko) * | 2015-02-27 | 2022-12-26 | 파나소닉 아이피 매니지먼트 가부시키가이샤 | 전기 집진 장치 |
| CN111468293B (zh) * | 2020-05-06 | 2022-06-21 | 韩光明 | 一种集尘板使用寿命得到提高的电除尘设备 |
| FR3121493A1 (fr) * | 2021-04-06 | 2022-10-07 | Akwel | Dispositif électrostatique de récupération de particules de poussières de freinage. |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE506434C (de) * | 1930-09-03 | Siemens Schuckertwerke Akt Ges | Niederschlagselektrode fuer elektrische Gasreinigungsanlagen | |
| US832767A (en) * | 1906-04-03 | 1906-10-09 | James H Bridge | Electrically treating air or other gases. |
| US1383586A (en) * | 1917-08-27 | 1921-07-05 | Int Precipitation Co | Art of separating suspended particles from gases |
| US1931436A (en) * | 1930-11-03 | 1933-10-17 | Int Precipitation Co | Electrical precipitating apparatus |
| US2142128A (en) * | 1936-04-22 | 1939-01-03 | Int Precipitation Co | Electrical precipitation method and apparatus |
| GB746324A (en) * | 1953-04-01 | 1956-03-14 | Westinghouse Electric Int Co | Improvements in or relating to electrostatic precipitators |
| US2973054A (en) * | 1956-02-15 | 1961-02-28 | Philco Corp | Gas cleaning unit |
| DE1078096B (de) * | 1957-07-25 | 1960-03-24 | Beth Ag Maschf | Elektrofilter zum Abscheiden von festen Teilchen aus Gasen |
| GB1046652A (en) * | 1961-05-26 | 1966-10-26 | Gen Electric | Apparatus for electrostatic precipitation |
| GB1267777A (en) * | 1970-04-30 | 1972-03-22 | American Standard Inc | Improvements in electrostatic precipitators |
| US4354858A (en) * | 1980-07-25 | 1982-10-19 | General Electric Company | Method for filtering particulates |
| DE3611019A1 (de) * | 1986-03-27 | 1987-10-01 | Dumitru Dr Ing Cucu | Elektrostatische abscheidevorrichtung |
| DE4223277C2 (de) * | 1992-07-15 | 2001-07-19 | Linde Ag | Verfahren und Vorrichtung zur Partikelentfernung aus Abgasen von Brennkraftmaschinen |
-
1994
- 1994-01-10 DE DE4400420A patent/DE4400420A1/de not_active Withdrawn
-
1995
- 1995-01-10 AT AT95906922T patent/ATE179346T1/de not_active IP Right Cessation
- 1995-01-10 WO PCT/EP1995/000073 patent/WO1995018680A1/de not_active Ceased
- 1995-01-10 DE DE59505751T patent/DE59505751D1/de not_active Expired - Fee Related
- 1995-01-10 JP JP7518317A patent/JPH08508934A/ja active Pending
- 1995-01-10 EP EP95906922A patent/EP0688246B1/de not_active Expired - Lifetime
- 1995-01-10 US US08/522,404 patent/US5837035A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE4400420A1 (de) | 1995-07-13 |
| EP0688246A1 (de) | 1995-12-27 |
| WO1995018680A1 (de) | 1995-07-13 |
| DE59505751D1 (de) | 1999-06-02 |
| US5837035A (en) | 1998-11-17 |
| ATE179346T1 (de) | 1999-05-15 |
| JPH08508934A (ja) | 1996-09-24 |
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