EP0740585B1 - Verfahren und vorrichtung zur behandlung gasgetragener partikel - Google Patents
Verfahren und vorrichtung zur behandlung gasgetragener partikel Download PDFInfo
- Publication number
- EP0740585B1 EP0740585B1 EP95906297A EP95906297A EP0740585B1 EP 0740585 B1 EP0740585 B1 EP 0740585B1 EP 95906297 A EP95906297 A EP 95906297A EP 95906297 A EP95906297 A EP 95906297A EP 0740585 B1 EP0740585 B1 EP 0740585B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- particles
- electrodes
- flow duct
- gas
- needle
- 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
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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
- B03C3/38—Particle charging or ionising stations, e.g. using electric discharge, radioactive radiation or flames
-
- 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
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
- B03C3/0175—Amassing particles by electric fields, e.g. agglomeration
-
- 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
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/10—Ionising electrode has multiple serrated ends or parts
Definitions
- the invention relates to a method for treating gas-borne Particles, especially for electrically induced agglomeration gas-borne particles according to the preamble of the claim 1 and an apparatus for performing the method according to the preamble of claim 7.
- Such methods and devices have a whole range of Areas of application.
- they are in the field of Particle separation used to test the effectiveness of known particle separation processes and devices towards smaller and expand the smallest particles.
- the desired particle enlargement can be different Way to be achieved.
- agglomeration techniques also known as “dry” processes known in which the desired agglomeration due to a collision of particles in a fluid Phase.
- dry processes known in which the desired agglomeration due to a collision of particles in a fluid Phase.
- a prerequisite for this so-called direct agglomeration is therefore that the individual particles in the fluid phase have a relative speed to one another.
- This relative speed can be determined by means of thermal and turbulent diffusion or by one induced by force fields Particle movement are generated. Coming as force fields especially heavy fields, centrifugal fields, sound fields or electric fields in question.
- the advantage of an electric induced agglomeration, d. H. the generation of relative speeds the particles by means of an electric field lies, for example, considerably in comparison to sound fields lower energy requirements, especially in the area small and smallest particles where electrical forces at only low power requirements still have a significant impact on the Exercise particle movements.
- DE-A-1 407 534 describes one for the separation of particles known from gas streams serving electrostatic precipitators, the ionization electrodes and has deposition electrodes.
- the ionization electrodes are arranged opposite, needle-shaped Electrodes formed, two opposite each other Ionization electrodes in a separating electrode serving cabbage protrude.
- For the desired separation of the Particles occur due to a potential difference between the ionization electrodes and the deposition electrode assigned to them, i.e. with this arrangement there is also a unipolar one Charging the particles instead.
- From US-A-4 734 105 is a method and a Device for separating solid or liquid particles known a gas flow by means of an electrical field.
- the particle-laden gas flow through a flow channel headed, in which several flat or flat curved Electrode pairs are arranged.
- At least the main electrodes have needle-shaped projections protruding into the flow channel with spherical or hemispherical tips on which there are corona discharges after application of an electric field and this leads to the ionization of gas molecules.
- the spherical or hemispherical tips of the needle-shaped Electrode extensions have a diameter that is larger than the diameter of the needle shaft.
- grid-shaped auxiliary electrodes should be reached be that the area in which the gas is ionized by that area separated in the radial direction of the flow channel is where the particles charged with the help of the gas ions collide.
- the creation of a strong electric field are made possible by the Solution to the problem identified in US-A-4,734,105 to be achieved, namely in the direction of flow Separation of particles significantly shorten the necessary distance. It is accordingly the one in US Pat. No. 4,734,105 described device for a further developed Electrostatic precipitator.
- the invention has for its object a method and a device for treating gas-borne particles, in particular for the electrically induced agglomeration of gas-borne Provide particles with which it is possible is an at least almost symmetrically bipolar charged aerosol to provide and at the same time the particle deposition during to minimize deployment.
- the electrodes must be wired so that they are ungrounded are. Furthermore, it must be ensured that the electrical Field only over the needle-shaped electrodes in the flow channel is coupled and the latter is otherwise free of external electrical fields. Through these measures achieved that the electric field in a spatially limited Area is coupled so that the particle agglomeration takes place mainly in areas where there is no external electric field. In this way prevents it from being reversed in the event of incomplete recombination charged particle to a particle drift in the radial direction of the flow channel and thus for the separation of Particles in the flow channel comes.
- the method and the device according to the invention are suitable for this are larger and highly unipolar charged, gas-borne Neutralize particles.
- larger particles are here Particles are meant that are larger than approximately 1 to 2 ⁇ m and in particular are larger than 5 ⁇ m.
- Charge distribution measurements in the particle size range above about 1.5 ⁇ m have shown that even with bipolar wiring of the electrodes a bipolar charged aerosol is generated.
- Process and the device according to the invention have been treated are. Due to theoretical considerations actually expects the number of elementary charges to be roughly proportional should be to particle size.
- a decisive advantage of the method according to the invention or a device according to the invention is in the focusing action of the needle-shaped electrodes can be seen, their opposite Arrangement enables oppositely charged particles in the immediate vicinity and in a spatially limited area Generate area, reducing the agglomeration speed compared to conventional methods or devices is significantly increased and a separation of particles, in particular in the area of the corona electrodes, is greatly reduced.
- the aerosol flowing through the flow channel is preferred repeatedly bipolar charged in the flow direction the agglomeration of oppositely charged particles charge recombination occurring and a high Ensure collision rate. Due to the repeated bipolar Charging the aerosol can also target the agglomerate size to be influenced. Experiments have shown that the gradual Connection of additional electrode pairs for an additional shift the resulting particle size distribution in areas leads to larger particle sizes. Saturation of the agglomeration effect due to multiple bipolar charging of the Aerosols could not be determined.
- the wall of the flow channel preferably consists of either electrically insulating plastic or a metal that provided with an electrically insulating coating on the inside is.
- a device 10 for electrically induced agglomeration gas-borne particles essentially consist of a closed one Flow channel 12 through the in the direction of the arrow Aerosol flows containing gas-borne particles 14 that are solid or can be liquid.
- the walls of the flow channel 12 d. H. the top surface 16, the bottom surface 18 and the two side surfaces, are made of metal, the inside with an electric insulating coating is provided. They can just as well But walls also made of an electrically insulating plastic consist. Because of the better recognizability it is that Side face of the flow channel 12 facing the observer only shown transparently in the figure.
- the upper electrodes 20 in FIG. 1 are connected to the positive pole of the DC voltage source, while the opposite, lower electrodes 22 are connected to the negative pole of the DC voltage source.
- the term "floating" should therefore mean here that none of the Electrodes 20 and 22 are connected to ground, but actually is connected with a plus or minus potential.
- the DC power source can also be a high voltage AC power source be used.
- Electrode pairs 20, 22 are in the top surface 16 or the bottom surface 18 with a distance of 10 cm in the flow direction arranged in the middle.
- the distance at which successive Electrode pairs arranged in the flow direction are from the residence time, the particles 14 between successive pairs of electrodes 20, 22 should have depends on the geometry of the flow channel used and the flow rate of the aerosol. It has found that the dwell time between in the direction of flow successive pairs of electrodes 20, 22 advantageous is in the range of one second.
- the five pairs of electrodes 20, 22 ensure that the during the residence time of the aerosol taking place in the flow channel 12 Agglomeration of oppositely charged particles and the same Charge recombination occurring, which leads to a reduction of the attractive interaction potential within the particle collective leads, balanced and overcompensated and thus one high collision rate over the entire length of the flow channel 12 is maintained. With targeted overcompensation due to the repeated bipolar charging of the aerosol Agglomerate size in the sense of increasing it to be influenced.
- Fig. 2 shows the structure of a needle-shaped electrode 20 and their fastening in the top surface 16 more precisely.
- the electrodes 22 are constructed identically and in the same way in the bottom surface 18 of the flow channel 12 attached.
- the heart of the electrode 20 is a thin long stainless steel needle 28, at the inner with respect to the flow channel 12 End 26 is formed. On the larger part of the Stainless steel needle 28 has an external thread 30.
- the part of the needle shaft 31, which is in the operational state in the Flow channel 12 protrudes from an electrical insulation 32 enclosed, which only leaves the tip 26 and thus from the shaft end of the tip 26 to the start of the external thread 30 is enough.
- the stainless steel needle 28 With its external thread 30, the stainless steel needle 28 is in a Screwed brass sleeve 34, which has a through hole for this 36 with a suitable internal thread 38. At their the End facing the flow channel 12 has the brass sleeve 34 External thread 40, with which it can be screwed into the cover surface 16 is in this a hole with a corresponding internal thread is provided. For easier screwing in of the brass sleeve 34 is a mouth or at its end facing away from the flow channel 12. Ring wrench attachment 42 formed.
- the electrical connection of the electrode 20 takes place by means of a another sleeve 44, which also has a through hole with a internal thread matching the external thread 30 of the stainless steel needle 28 having.
- This sleeve 44 which with the not shown here Line 24 is connected to the part of the external thread 30 screwed out of the brass sleeve 34 protrudes.
- a handle attached to the sleeve 44 called that at the same time for electrical insulation serves.
Landscapes
- Physical Or Chemical Processes And Apparatus (AREA)
- Electrostatic Separation (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Description
- Fig. 1
- eine erfindungsgemäße Vorrichtung in perspektivischer, teilweise aufgebrochener Darstellung, und
- Fig. 2
- eine in der Vorrichtung gemäß Fig. 1 zum Einsatz kommende, nadelförmige Elektrode in auseinandergezogener Darstellung.
Claims (18)
- Verfahren zur Behandlung gasgetragener Partikel, insbesondere zur elektrisch induzierten Agglomeration solcher Partikel, mit den Schritten:Leiten einer partikelbeladenen Gasströmung durch einen geschlossenen Strömungskanal, undEinkoppeln eines elektrischen Feldes, das zur Ionisation des den Strömungskanal durchströmenden Gases geeignet ist, in den Strömungskanal mittels zumindest eines Elektrodenpaares,
Ionisieren des Gases zwischen erdfrei geschalteten, sich im Strömungskanal radial gegenüberliegenden, nadelförmigen Elektroden entgegengesetzter Polarität, wodurch eine Agglomeration der Partikeln im Strömungskanal im wesentlichen in Bereichen ohne äußeres elektrisches Feld erfolgt. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß die Partikel nahezu symmetrisch bipolar aufgeladen werden. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Partikel in Strömungsrichtung wiederholt bipolar aufgeladen werden. - Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die Aufladung der Partikel im Gleichspannungsfeld erfolgt. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß das elektrische Feld in einem räumlich sehr eng begrenzten Bereich zwischen den Spitzen der nadelförmigen Elektroden fokussiert ist. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die aufzuladenden Partikeln kleiner als 1 µm, bevorzugt kleiner als 0,5 µm und insbesondere kleiner als 0,1 µm sind. - Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 6, mit einem geschlossenen Strömungskanal (12) und mehreren darin angeordneten Elektroden (20, 22), die alle nadelförmig und gegenüber der Strömungskanalwandung isoliert sind und die sich paarweise im Strömungskanal (12) radial gegenüberliegen, und mit einer Stromquelle, die mit den Elektroden (20, 22) verbunden ist und deren Stärke dazu ausreicht, zwischen den erdfrei geschalteten Elektroden (20, 22) entgegengesetzter Polarität jedes Elektrodenpaares (20 und 22) Koronaentladungen zu erzeugen.
- Vorrichtung nach Anspruch 7,
dadurch gekennzeichnet, daß das zwischen den gegenüberliegenden Elektroden (20 und 22) anliegende Potentialverhältnis zumindest nahezu symmetrisch ist. - Vorrichtung nach Anspruch 7 oder 8,
dadurch gekennzeichnet, daß im Strömungskanal (12) mehrere Elektrodenpaare (20, 22) in Strömungsrichtung hintereinander angeordnet sind. - Vorrichtung nach einem der Ansprüche 7 bis 9,
dadurch gekennzeichnet, daß die Stromquelle eine Hochspannungs-Gleichstromquelle ist. - Vorrichtung nach einem der Ansprüche 7 bis 10,
dadurch gekennzeichnet, daß der Nadelschaft (31) jeder Elektrode (20 und 22) von einer elektrischen Isolierung (32) umgeben ist. - Vorrichtung nach einem der Ansprüche 9 bis 11,
dadurch gekennzeichnet, daß die Elektrodenpaare (20, 22) mit einem Abstand von zumindest annähernd 10 cm in Strömungsrichtung angeordnet sind. - Vorrichtung nach einem der Ansprüche 7 bis 12,
dadurch gekennzeichnet, daß die sich gegenüberliegenden Spitzen (26) eines jeden Elektrodenpaares (20, 22) einen Abstand voneinander im Bereich von 10 mm bis 40 mm aufweisen. - Vorrichtung nach einem der Ansprüche 7 bis 13,
dadurch gekennzeichnet, daß die Elektroden (20 und 22) mittels zweier Hülsen (34, 44) in der Kanalwandung befestigt sind. - Vorrichtung nach einem der Ansprüche 7 bis 14,
dadurch gekennzeichnet, daß die Kanalwandung aus elektrisch isolierendem Kunststoff besteht. - Vorrichtung nach einem der Ansprüche 7 bis 14,
dadurch gekennzeichnet, daß die Kanalwandung aus Metall besteht und innen mit einer elektrisch isolierenden Beschichtung versehen ist. - Verwendung einer Vorrichtung nach einem der Ansprüche 7 bis 16 zur Neutralisation hoch unipolar aufgeladener, gasgetragener Partikel.
- Verwendung nach Anspruch 17,
dadurch gekennzeichnet, daß die Partikel größer als 1,5 µm, bevorzugt größer als 2 µm und insbesondere größer als 5 µm sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4400827A DE4400827C1 (de) | 1994-01-13 | 1994-01-13 | Verfahren und Vorrichtung zur elektrisch induzierten Agglomeration gasgetragener Partikeln |
DE4400827 | 1994-01-13 | ||
PCT/EP1995/000026 WO1995019226A1 (de) | 1994-01-13 | 1995-01-04 | Verfahren und vorrichtung zur behandlung gasgetragener partikel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0740585A1 EP0740585A1 (de) | 1996-11-06 |
EP0740585B1 true EP0740585B1 (de) | 1998-08-05 |
Family
ID=6507853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95906297A Expired - Lifetime EP0740585B1 (de) | 1994-01-13 | 1995-01-04 | Verfahren und vorrichtung zur behandlung gasgetragener partikel |
Country Status (10)
Country | Link |
---|---|
US (1) | US5824137A (de) |
EP (1) | EP0740585B1 (de) |
JP (1) | JP3115326B2 (de) |
AT (1) | ATE169246T1 (de) |
BR (1) | BR9506491A (de) |
CA (1) | CA2181138A1 (de) |
DE (2) | DE4400827C1 (de) |
ES (1) | ES2120723T3 (de) |
WO (1) | WO1995019226A1 (de) |
ZA (1) | ZA95276B (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6004375A (en) * | 1994-01-13 | 1999-12-21 | Gutsch; Andreas | Process and apparatus to treat gasborne particles |
GB9605574D0 (en) * | 1996-03-16 | 1996-05-15 | Mountain Breeze Ltd | Treatment of particulate pollutants |
DE19615111A1 (de) * | 1996-04-17 | 1997-10-23 | Degussa | Oxide |
US6228149B1 (en) | 1999-01-20 | 2001-05-08 | Patterson Technique, Inc. | Method and apparatus for moving, filtering and ionizing air |
US6482253B1 (en) * | 1999-09-29 | 2002-11-19 | John P. Dunn | Powder charging apparatus |
FR2818451B1 (fr) * | 2000-12-18 | 2007-04-20 | Jean Marie Billiotte | Dispositif electrostatique d'emission ionique pour deposer une quantite quasi homogene d'ions sur la surface d'une multitude de particules aerosols au sein d'un fluide en mouvement. |
US6589314B1 (en) | 2001-12-06 | 2003-07-08 | Midwest Research Institute | Method and apparatus for agglomeration |
JP4409516B2 (ja) * | 2006-01-16 | 2010-02-03 | 財団法人大阪産業振興機構 | 帯電ナノ粒子製造方法及び帯電ナノ粒子製造システム並びに帯電ナノ粒子堆積システム |
US8167984B1 (en) | 2008-03-28 | 2012-05-01 | Rogers Jr Gilman H | Multistage electrically charged agglomeration system |
DE102009021631B3 (de) * | 2009-05-16 | 2010-12-02 | Gip Messinstrumente Gmbh | Verfahren und Vorrichtung zur Erzeugung einer bipolaren Ionenatmosphäre mittels elektrischer Sperrschichtentladung |
CN104136551B (zh) | 2011-10-24 | 2016-09-21 | 埃迪亚贝拉努沃有限公司 | 生产碳黑的改进工艺 |
EP2772309B1 (de) | 2013-03-01 | 2015-06-03 | Brandenburgische Technische Universität Cottbus-Senftenberg | Vorrichtung zum Abscheiden von Partikeln aus einem mit Partikeln beladenen Gasstrom und Verfahren |
CN109387463A (zh) * | 2017-08-08 | 2019-02-26 | 财团法人交大思源基金会 | 可防止采样误差的高效率静电微粒液相采样器 |
CN107626452A (zh) * | 2017-10-11 | 2018-01-26 | 江苏中建材环保研究院有限公司 | 一种湿式电除尘器用预荷电式整流格栅 |
DE102018205332A1 (de) * | 2018-04-10 | 2019-10-10 | BSH Hausgeräte GmbH | Elektrostatische Filtereinheit und Lüftungsvorrichtung mit elektrostatischer Filtereinheit |
US11772103B2 (en) * | 2020-03-27 | 2023-10-03 | Praan Inc. | Filter-less intelligent air purification device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1407534A1 (de) * | 1960-09-21 | 1969-04-10 | G A Messen Jaschin Fa | Elektrofilter |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE144509C (de) * | ||||
US1962555A (en) * | 1931-07-09 | 1934-06-12 | Int Precipitation Co | Method and apparatus for electrical precipitations |
US2758666A (en) * | 1952-04-10 | 1956-08-14 | Phillips Petroleum Co | Carbon black separation |
FR1379191A (fr) * | 1963-12-11 | 1964-11-20 | Trion | Procédé et dispositif d'ionisation de particules en suspension dans un courant degaz |
US3768258A (en) * | 1971-05-13 | 1973-10-30 | Consan Pacific Inc | Polluting fume abatement apparatus |
US3826063A (en) * | 1973-05-21 | 1974-07-30 | T Festner | Electrostatic agglomeration apparatus |
US4071688A (en) * | 1976-08-18 | 1978-01-31 | Uop Inc. | Method and article for protecting a precipitator discharge electrode |
DE2646798C2 (de) * | 1976-10-16 | 1982-12-16 | Haug & Co KG, 7022 Leinfelden-Echterdingen | Vorrichtung zur elektrischen Aufladung von flüssigen oder festen Teilchen in einem Gas-, insbesondere Luftstrom und Aufbringung der geladenen Teilchen auf Oberflächen |
JPS5364878A (en) * | 1976-11-19 | 1978-06-09 | Matsushita Electric Ind Co Ltd | Electric dust collector |
US4391614A (en) * | 1981-11-16 | 1983-07-05 | Kelsey-Hayes Company | Method and apparatus for preventing lubricant flow from a vacuum source to a vacuum chamber |
US4477263A (en) * | 1982-06-28 | 1984-10-16 | Shaver John D | Apparatus and method for neutralizing static electric charges in sensitive manufacturing areas |
EP0185966B1 (de) * | 1984-12-21 | 1989-01-25 | BBC Brown Boveri AG | Verfahren und Vorrichtung zur Entstaubung eines feste oder flüssige Partikel in Suspension enthaltenden Gasstromes mittels eines elektrischen Feldes |
US4670026A (en) * | 1986-02-18 | 1987-06-02 | Desert Technology, Inc. | Method and apparatus for electrostatic extraction of droplets from gaseous medium |
DE3737343A1 (de) * | 1986-11-18 | 1988-05-26 | Bbc Brown Boveri & Cie | Vorrichtung zur konzentration und agglomeration von in einem gasstrom suspendierten festen oder fluessigen partikeln |
JP3066833B2 (ja) * | 1989-09-08 | 2000-07-17 | 高砂熱学工業株式会社 | 空気清浄装置、空気清浄方法及びクリーンルーム |
-
1994
- 1994-01-13 DE DE4400827A patent/DE4400827C1/de not_active Expired - Fee Related
-
1995
- 1995-01-04 BR BR9506491A patent/BR9506491A/pt not_active Application Discontinuation
- 1995-01-04 AT AT95906297T patent/ATE169246T1/de not_active IP Right Cessation
- 1995-01-04 EP EP95906297A patent/EP0740585B1/de not_active Expired - Lifetime
- 1995-01-04 JP JP07518811A patent/JP3115326B2/ja not_active Expired - Fee Related
- 1995-01-04 ES ES95906297T patent/ES2120723T3/es not_active Expired - Lifetime
- 1995-01-04 CA CA002181138A patent/CA2181138A1/en not_active Abandoned
- 1995-01-04 DE DE59503073T patent/DE59503073D1/de not_active Expired - Fee Related
- 1995-01-04 WO PCT/EP1995/000026 patent/WO1995019226A1/de active IP Right Grant
- 1995-01-13 ZA ZA95276A patent/ZA95276B/xx unknown
-
1996
- 1996-07-12 US US08/679,269 patent/US5824137A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1407534A1 (de) * | 1960-09-21 | 1969-04-10 | G A Messen Jaschin Fa | Elektrofilter |
Also Published As
Publication number | Publication date |
---|---|
MX9602771A (es) | 1998-06-28 |
CA2181138A1 (en) | 1995-07-20 |
DE4400827C1 (de) | 1995-04-20 |
ZA95276B (en) | 1995-09-21 |
ATE169246T1 (de) | 1998-08-15 |
US5824137A (en) | 1998-10-20 |
BR9506491A (pt) | 1997-10-07 |
JP3115326B2 (ja) | 2000-12-04 |
ES2120723T3 (es) | 1998-11-01 |
DE59503073D1 (de) | 1998-09-10 |
WO1995019226A1 (de) | 1995-07-20 |
JPH09507429A (ja) | 1997-07-29 |
EP0740585A1 (de) | 1996-11-06 |
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