EP0161205B1 - Précipitateur électrostatique à deux étages - Google Patents
Précipitateur électrostatique à deux étages Download PDFInfo
- Publication number
- EP0161205B1 EP0161205B1 EP85730043A EP85730043A EP0161205B1 EP 0161205 B1 EP0161205 B1 EP 0161205B1 EP 85730043 A EP85730043 A EP 85730043A EP 85730043 A EP85730043 A EP 85730043A EP 0161205 B1 EP0161205 B1 EP 0161205B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dust
- electrodes
- collecting
- charging
- electrode
- 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
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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
-
- 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
- B03C3/02—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
- B03C3/74—Cleaning 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
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/10—Ionising electrode has multiple serrated ends or parts
Definitions
- the present invention relates to a two-stage electrostatic precipitator including a charging unit and a dust collecting unit according to the first part of the claim.
- a two-stage electrostatic precipitator including a charging unit for mainly charging dust and a dust collecting unit for mainly collecting dust is disclosed in FR-A-22 26 213.
- the charging unit includes discharging electrodes having a substantially uniform cross section to which is applied high voltage pulse superimposed on a DC high voltage.
- a pipe is used as a dust collecting electrode which is cooled by flowing water into the pipe to decrease an electric resistance of the dust so that the inverse ionization is suppressed.
- a third electrode disposed between the dust collecting electrode and the discharging electrode, in which the inverse ionization is suppressed by absorbing inversely polarized ions which are produced in the inverse ionizing state.
- high voltage pulse generators 8c and 8d are added to the DC high voltage generators 3a and 3b through coupling condensers 9c and 9d to change the charging characteristic as shown by dashed line h of Fig. 4.
- the operation is made with high current density to improve the performance.
- the pulse generator when all area of the flow duct for gas in EP is charged by the pulse charging, the pulse generator is expensive. When energy is dissipated as Joule's heat by a waveforming resistance in order to generate a voltage pulse, the power consumption is increased.
- another prior art electrostatic precipitator includes, as shown in Fig. 17, a plurality of dust collecting units 12 which are disposed in a body 11 of the apparatus along the flowing direction of gas shown by an arrow G and collect dust in gas.
- the dust collecting unit 12 comprises a plurality of dust collecting electrodes 21 disposed in parallel which the flowing direction of gas and in opposed relationship with each other and a plurality of discharging electrodes 22 disposed between the collecting electrodes 21 as shown in Fig. 18. More particularly, the collecting unit 12 is constructed so that a high voltage is applied between the collecting electrodes 21 and the discharging electrodes 22 to produce the corona discharge and charge dust in gas so that dust is collected on the collecting electrodes 21.
- the collecting electrodes 21 on which dust is collected are hit and vibrated by hammers 13 provided in the body 11 so that the dust collected by the collecting unit 12 is shaken down into hoppers 14 disposed under the collecting unit 12 and exhausted outside by a conveyor 15.
- the present invention is made in order to resolve the above drawbacks.
- the gist of the present invention is as follows.
- a two-stage electrostatic precipitator including a charging unit for mainly charging dust and a dust collecting unit for mainly collecting dust is featured by the following items (i), (ii), (iii), (iv) and (v), respectively.
- the present invention provided with the above construction attains the following effects.
- the present invention is to provide a two-stage electrostatic precipitator with compact structure and high performance and capable of utilizing the pulse supply source economically.
- the electrode structure of the present invention can form uniform current density near the dust collecting electrode and high electric field near the discharging electrode and the collecting electrode. By utilizing this characteristics, dust is charged uniformly and high operating electric field for the high resistance dust is obtained, so that the function of the two-stage EP is improved.
- the charging unit for charging dust in gas and the collecting unit for collecting dust charged by the charging unit by the coulomb force are disposed along the flowing direction of gas and the small sectional damper for cutting off the flow of gas is provided downstream of the collecting unit. Accordingly, there can be provided the electrostatic precipitator which prevents the reduction of the collection performance due to the inverse ionization and the re-scattering of dust and can collect dust in gas effectively.
- the electrostatic precipitator includes charging units 6 and dust collecting units 7.
- the charging units and the collecting units are disposed in combination in the form of a single or a plurality of combinations of the charging unit and the collecting unit or the charging unit, the collecting unit and the collecting unit as shown in Fig. 9.
- the charging unit 6 is composed of discharging electrodes 4 which are in the form of a round wire of 3 to 10 mm as shown by (A) of Fig. 11, or in the form of a square wire of diagonal width 4 to 10 mm as shown by (B) of Fig. 11, or in the form similar to the wire and having a uniform cross section along the length thereof as shown by (C) and (D) of fig. 11, and plate-like or round dust collecting electrodes 1a a which have less unevenness and can form uniform electric field on the surface thereof as shown in Fig. 8,
- a DC high voltage is applied between both the electrodes 4 and 1a from a DC high voltage generators 3c and 3f shown in Fig. 6 and further a high voltage pulse of several tens ns to several hundreds ⁇ s is applied from a high voltage pulse generators 8a and 8b through coupling condensers 9a and 9b therebetween while superimposed on the DC high voltage.
- the collecting unit 7 is composed of a combination of dust collecting electrodes and discharging electrodes which have been widely used hitherto, it is effective by combining it with the above charging unit 6.
- a more effective combination there is considered a combination of the discharging electrodes 5 and the dust collecting electrodes 1b which can obtain a voltage as high as possible by minimizing a pitch between the discharging electrodes 5 along the flow of gas or by making large the radius of curvature of the discharging electrodes 5 or the equivalent radius of curvature of the electrodes 5 which are not round.
- the electrostatic precipitator of the embodiment of the present invention is constructed above, a high electric field is generated but current does not flow as shown by c or d of fig. 10 when a normal DC high voltage is applied.
- the high voltage pulse is superimposed on the charging unit 6 composed of the discharging electrodes 4 and the collecting electrodes 1a having a characteristic of less current flowing, there is obtained a current and voltage characteristic that a relatively high current density is obtained while maintaining a high electric field as shown by e of Fig. 10 in the case of high resistance dust.
- dust can be charged highly.
- the charging unit 6 charges dust mainly but possesses a dust collecting function to a certain extent. Accordingly, the unit 6 is constructed so that dust is shaken down by hammers in the same manner as in a ordinary electrostatic precipitator.
- the charged dust is then collected on the collecting electrodes by the force of the electric field in the collecting unit 7.
- the electrodes of the collecting unit 7 are constructed so that current does not almost flow and a high electric field strength is obtained.
- the collecting unit 7 is combined with the above charging unit 6 to obtain the high dust collection efficiency.
- the discharging electrode may be formed of a plate and the collecting unit may be formed of the parallel plates generating a high electric field.
- the discharging electrodes 4 having a uniform section without spine as shown in fig. 11 are used to be applied with the high voltage pulse of several tens ns to several hundreds J.LS superimposed on the ordinary DC high voltage and the electrodes are functioned as the charging unit 6 for mainly charging dust in the EP.
- the charging unit 6 is combined with the collecting unit 7 of the next stage which is a charging section of low current and high electric field to obtain the high dust collection performance.
- the dust collection efficiency in total can be improved due to improvement of the dust collection efficiency in the latter stage of the high electric field portion, while the dust collection efficiency of only the charging unit is not improved.
- the prior art charging manner when the inverse ionization is generated, the current flows locally and the current is consumed by the local portion only. When the pulse voltage is superimposed, the current flows uniformly in the inverse ionization generating state. Accordingly, while the ions of reverse porality are increased, the absolute supply of ions is increased by increasing the current, so that the dust is increasingly charged. This is confirmed by experiments.
- the function of the EP is divided into two stages and the high voltage pulse of several tens ns to several hundreds ⁇ s superimposed on the DC high voltage is applied to only the charging unit 6 for mainly charging dust, so that the pulse supply source can be utilized economically and effectively.
- a particle of 1 micron for example, can be charged 65 % of the saturated charge quantity for the charging time of 0.1 second and 95 % for 1 second on the basis of a calculation in the condition of the current density of 0.2 mA/m 2 and the electric field strength of 3 kV/cm. Accordingly, if the velocity of gas is 1 m/s, it is sufficient practically that the length of the charging portion is several tens cm to 1 m.
- the discharging electrode having the substantially uniform cross section and the characteristic that the corona start voltage is high and the current is difficult to flow when the ordinary DC high voltage is applied is combined with the dust collecting electrode capable of forming the uniform and high electric field on the surface thereof and the high voltage pulse having a pulse width of several tens ns to several hundreds J.l.S superimposed on the DC high voltage is applied between both the electrodes so that the high current density is obtained while maintaining the high electric field strength for the high resistance dust.
- this conception is mainly utilized as the charging unit of dust and the subsequent charging section for applying the DC high voltage is utilized as the dust collecting unit. Accordingly, the present invention is to provide the electrostatic precipitator with compact structure and high performance and utilizing the pulse supply source economically in total by combination of the charging unit and the collecting unit.
- the dust collecting electrodes 1a have a circular or similar uniform cross section in the direction perpendicular to the gas flow G and the discharging electrode 2a is disposed at the equal distance from each apex of the polygon in the polygon formed by the centers of the collecting electrodes 1a.
- the collecting electrodes 1a form squares in Fig. 12(A) and form equilateral triangles in Fig. 12(B).
- the combination of the electrodes is not limited to the square or the equilateral triangle and may be any polygon such as a rectangle or an isosceles triangle which has a point at the equal distance from each apex thereof.
- the polygon such as the square or the equilateral triangle is desirable.
- the number of the polygons in the flowing direction of gas shown by a arrow G is two for one charging unit. The number is not limited to two and may be single or three or more.
- numeral 3 denotes a DC high voltage generator
- numeral 8 a high voltage pulse generator
- numeral 9 a coupling condenser for applying a pulse voltage.
- the prior art two-stage EP includes a charging unit Y and the dust collecting unit Z constructed integrally as shown in Fig. 13.
- the charging unit is composed of a combination of a pair of discharging electrodes 2b and a dust collecting electrode 1 b and the collecting unit is composed of a combination of a discharging plate 2c for applying a high voltage and the collecting electrode 1b.
- the collecting electrode 1a or 1b forms the very uniform current density Ip 2 on the surface of the round collecting electrode 1a as shown in the current density distribution characteristic of Fig. 14(A) as compared with the current density Ip 1 of the prior art electrode combination (1 and 2b) shown in Fig. 14(B). This is conformed by the theoretical calculation and the experimental measurement of the inventor.
- Figs. 15(A) and (C) show equal electric field strength lines for the discharging electrode and the collecting electrode
- Figs. 15(B) and (D) show the electric field strength distribution at the shortest distance.
- the prior are electrode structure shown in (C) and (D) has high electric field portions Pb only near the discharging electrodes 2b.
- the electrode structure of the embodiment shown in (A) and (B) has the high electric field portions Pa not only near the discharging electrodes 2a but also near the collecting electrode 1a. This is conformed by the theoretical calculation and the experimental measurement.
- Dust handled by the EP is charged by the electric field charging mainly, that is, by energizing single- pole ions produced by the corona discharge by the electric field to collide the ions against the dust.
- the charged quantity q of the dust is given by where (charged saturation quantity) is proportional to the electric field strength E of the charging unit and T (charge time constant) is proportional to the electric field strength E and is inversely proportional to the current density i. Accordingly, in order to increase the charged quantity, it is necessary to increase the electric field strength E. Further, it is necessary to increase the current density in order to increase the charged quantity in a short time.
- the operating voltage is determined by the starting point of the inverse ionization and the starting point of the inverse ionization is determined on the basis of time when the product id x pd of the current id flowing through the dust layer and the resistance pd of dust exceeds the breakdown voltage Edc of the dust layer.
- an area in which a high electric field is formed as shown by Pa of Fig. 15(A) exists in the collecting electrode side.
- An area in which dust is highly charged is limited to the vicinity of the discharging electrode in the prior art, whereas an area in which dust is highly charged is enlarged. Accordingly, dust carried by the flowing gas G almost passes through the area having a high electric field, that is, the area in which dust is highly charged and hence the charging function of the electrostatic precipitator is improved.
- the electrode structure of the embodiment also possesses the dust collecting function.
- the dust collection efficiency per the same surface area of the dust collecting electrode is large as compared with the prior art electrode structure and hence the electrode structure can be used as the ordinary one-stage EP.
- pipes are disposed in square at spaced intervals of the electrode of the discharging electrode and the dust collecting electrode for the general industry, it is necessary to enlarge the diameter of the pipes or increase the number of pipes along the gas flowing direction in order to make equal the dust collecting area per the same capacity to the prior art electrode and hence it is not practical since the above merit is not utilized. Accordingly, the embodiment is particularly effective for the two-stage EP.
- the electrical characteristic formed by the combination of the polygon layout (ordinarily square) formed of the round or similar shaped dust collecting electrodes and the discharging electrodes disposed in the substantially center of the polygon is excellent in only the characteristic of charging dust differently from the prior art combination of the plate-like dust collecting electrode parallel with the gas flowing direction and the discharging electrode line disposed in the center thereof.
- the round or similar shaped dust collecting electrodes is used instead of the parallel plate-like dust collecting electrode used as the charging unit of the prior art two-stage EP and the discharging electrodes are disposed at the substantially equal distance from each apex of the polygon formed by the center of the collecting electrodes, so that the charging function for dust is enhanced and hence the dust collection efficiency of the two-stage EP is increased.
- Fig. 18 is a side view of the electrostatic precipitator showing a further embodiment of the present invention.
- numeral 31 denotes a body of the precipitator, in which charging units 32 for charging dust in gas and dust collecting units 33 for collecting dust charged by the charging units 32 by the coulomb force are disposed in two stages along the gas flowing direction G.
- the charging unit 32 is composed of a plurality of discharging electrodes 32a disposed in parallel with the gas flowing direction and opposite to each other and a plurality of opposed electrodes 32b disposed between the discharging electrodes 32a.
- the dust collecting unit 33 is composed of a plurality of dust collecting electrodes 33a disposed in parallel with the gas flowing direction and opposite to each other and a plurality of opposed electrodes 33b disposed between the collecting electrodes 33a.
- the discharging electrodes 32a and the opposed electrodes 32b of the charging unit 32 are connected to the negative side and the positive side of a DC high voltage generator 41, respectively.
- the collecting electrodes 33a and the opposed electrodes 33b of the collecting unit 33 are connected to the negative side and the positive side of a DC high voltage generator 42, respectively.
- the charging unit 32 is constructed so that dust in gas is charged by the voltage supplied from the DC high voltage generator 41 and the collecting unit 33 is constructed so that the dust charged by the charging unit 32 is collected by the voltage supplied from the DC high voltage generator 42.
- a small sectional damper 34 for cutting off the flow of gas is provided downstream of the latter stage collecting unit 33.
- the damper 34 is constructed for example as shown in Fig. 20 and serves to prevent scattering of dust when dust collected by the collecting unit 33 is shaken down into hoppers 35.
- numeral 51 denotes a movable closing plate for sequentially closing a plurality of gas passages 52 formed by the plurality of dust collecting electrodes 33a one by one.
- the movable closing plate 52 moves perpendicularly to the gas flowing direction by a chain 55 wound between sprockets 53 and 54.
- a drive motor 57 is coupled with the sprocket 53 through a transmission mechanism 56.
- the movable closing plate 51 moves along guide rails 59 and 60 provided at upper and lower end of partition plates 58 disposed at the rear side of the collecting electrodes 33a.
- Limit switches 61 which detect the position of the movable closing plate 51 are disposed at the lower end of the partition plates 58.
- the small section damper 34 is constructed so that the movable closing plate 51 closes the gas passage of the collecting electrode 33a to be hit to cut off the gas flow so that the re-scattering of dust is prevented.
- the inverse ionization phenomenon is generated in the prior art electrostatic precipitator when the electric resistance of dust is high. This is because the dust layer deposited on the collecting electrode 21 is isolation brokendown when a certain value or more corona current flows.
- the corona current must be reduced in order to prevent the phenomenon. In this case, since the applied voltage is also reduced, the performance is not improved.
- the electrode structure which sufficiently charges dust by the charging unit 32 or the charge technique is applied to maintain the corona current in the latter stage collecting unit 33 low and to form the high electric field so that an obstacle due to the inverse ionization phenomenon is avoided.
- a previously charging device for example, already disclosed in a general literature may be applied to the charging unit 32.
- the charging device contains, for example, a manner of maintaining cleaner the surface of the electrode, improvement of the electrode structure including an electrode cooling manner of reducing the electric resistance of dust, and a manner of applying the charging pulse of a short and sharp waveform.
- the collecting electrode 33a of the collecting unit 33 uses, for example, a plate or a similar member to the plate.
- the opposed electrode 33b uses a uniform section member without a sharp projection or edge such as a round wire having a diameter of 6 mm or a square wire having an area of 8 mm or more so that a high electric field strength can be formed under a low corona current.
- the dust charged by the charging unit 32 is collected by the formation of the high electric field of the collecting unit 33.
- the reduction of collection performance due to the inverse ionization can be prevented.
- the collecting electrode 33 having the gas passage closed by the small section damper 34 is hit to shake down the dust collected by the collecting unit 33, the reduction of the collection performance due to the re-scattering of dust can be prevented.
- the electrostatic precipitator according to the present invention may be combined with the prior art collecting unit 12 as shown by the modification shown in Fig. 22.
Landscapes
- Electrostatic Separation (AREA)
Claims (1)
- Dispositif de précipitation électrostatique à deux étages, comportant une unité de charge (6) pour principalement charger la poussière et une unité de collecte de poussière (7) pour principalement recueillir la poussière, ladite unité de charge (6) comprenant des électrodes de décharge (2a) ayant une section sensiblement uniforme auxquelles est appliquée une impulsion à haute tension superposée à une haute tension continue et des électrodes de collecte de poussière (1a), et ladite unité de collecte de poussière (7) comprenant des électrodes de décharge (5) et également des électrodes de collecte de poussière (1b), caractérisé en ce que lesdites électrodes de décharge (2a) de ladite unité de charge (6) sont disposées à une égale distance de chaque sommet d'un polygone formé par les centres desdites électrodes de collecte de poussière (1a) et en ce que le rayon de courbure desdites électrodes de collecte de poussière (1a) ou, si lesdites électrodes de collecte (1a) ne sont pas circulaires, le rayon de courbure équivalent, est plus grand que celui des électrodes de décharge (2a).
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59065504A JPS60209273A (ja) | 1984-04-02 | 1984-04-02 | 二段式電気集じん装置 |
JP65504/84 | 1984-04-02 | ||
JP66286/84 | 1984-04-03 | ||
JP59066286A JPS60209274A (ja) | 1984-04-03 | 1984-04-03 | 2段式電気集じん装置 |
JP82646/84 | 1984-04-24 | ||
JP59082646A JPS60225659A (ja) | 1984-04-24 | 1984-04-24 | 電気集じん装置 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0161205A2 EP0161205A2 (fr) | 1985-11-13 |
EP0161205A3 EP0161205A3 (en) | 1986-03-05 |
EP0161205B1 true EP0161205B1 (fr) | 1989-01-11 |
Family
ID=27298821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85730043A Expired EP0161205B1 (fr) | 1984-04-02 | 1985-03-21 | Précipitateur électrostatique à deux étages |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0161205B1 (fr) |
KR (1) | KR890002205B1 (fr) |
AU (1) | AU581647B2 (fr) |
BR (1) | BR8501516A (fr) |
CA (1) | CA1268429A (fr) |
DE (1) | DE3567386D1 (fr) |
HK (1) | HK39093A (fr) |
SG (1) | SG35592G (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2556364B2 (ja) * | 1988-06-21 | 1996-11-20 | アネルバ株式会社 | 真空蒸着装置 |
DE102008046411A1 (de) * | 2008-09-04 | 2010-03-11 | Eisenmann Anlagenbau Gmbh & Co. Kg | Vorrichtung zum Abscheiden von Lack-Overspray |
DE102009006528A1 (de) * | 2009-01-28 | 2010-07-29 | Eisenmann Anlagenbau Gmbh & Co. Kg | Anlage zum Beschichten, insbesondere Lackieren, von Gegenständen, insbesondere Fahrzeugkarosserien |
KR101538266B1 (ko) * | 2014-02-13 | 2015-07-22 | 주식회사 포스코아이씨티 | 복합 하전 타입의 전기 집진장치 및 그 제어방법 |
JP7109194B2 (ja) * | 2018-01-15 | 2022-07-29 | 三菱重工パワー環境ソリューション株式会社 | 電気集塵装置 |
CN108435428A (zh) * | 2018-04-04 | 2018-08-24 | 艾尼科环保技术(安徽)有限公司 | 一种静电除尘器中的星形阴极线 |
CN110694800B (zh) * | 2019-09-23 | 2024-05-14 | 宁波方太厨具有限公司 | 一种高压静电净化装置及应用该高压静电净化装置的吸油烟机 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1028538B (de) * | 1956-09-20 | 1958-04-24 | Bischoff Gasreinigung | Elektrofilter-Ausstroemelektrode und Verfahren zu ihrer Herstellung |
JPS5148903B2 (fr) * | 1973-04-23 | 1976-12-23 | ||
US4126434A (en) * | 1975-09-13 | 1978-11-21 | Hara Keiichi | Electrostatic dust precipitators |
JPS52156473A (en) * | 1976-06-21 | 1977-12-26 | Senichi Masuda | Pulse charge type electric dust collector |
US4209306A (en) * | 1978-11-13 | 1980-06-24 | Research-Cottrell | Pulsed electrostatic precipitator |
-
1985
- 1985-03-21 AU AU40196/85A patent/AU581647B2/en not_active Ceased
- 1985-03-21 DE DE8585730043T patent/DE3567386D1/de not_active Expired
- 1985-03-21 EP EP85730043A patent/EP0161205B1/fr not_active Expired
- 1985-03-26 CA CA000477462A patent/CA1268429A/fr not_active Expired - Lifetime
- 1985-04-01 KR KR1019850002190A patent/KR890002205B1/ko not_active IP Right Cessation
- 1985-04-01 BR BR8501516A patent/BR8501516A/pt not_active IP Right Cessation
-
1992
- 1992-03-26 SG SG355/92A patent/SG35592G/en unknown
-
1993
- 1993-04-22 HK HK390/93A patent/HK39093A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
AU581647B2 (en) | 1989-03-02 |
BR8501516A (pt) | 1985-11-26 |
KR890002205B1 (ko) | 1989-06-23 |
HK39093A (en) | 1993-04-30 |
CA1268429A (fr) | 1990-05-01 |
EP0161205A2 (fr) | 1985-11-13 |
SG35592G (en) | 1993-01-29 |
EP0161205A3 (en) | 1986-03-05 |
AU4019685A (en) | 1985-10-31 |
KR850007221A (ko) | 1985-12-02 |
DE3567386D1 (en) | 1989-02-16 |
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