US3616606A - Multistage electrostatic precipitator - Google Patents

Multistage electrostatic precipitator Download PDF

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Publication number
US3616606A
US3616606A US869195A US3616606DA US3616606A US 3616606 A US3616606 A US 3616606A US 869195 A US869195 A US 869195A US 3616606D A US3616606D A US 3616606DA US 3616606 A US3616606 A US 3616606A
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section
grids
grid
particles
plates
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US869195A
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English (en)
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James Henry Vincent
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Trane US Inc
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American Standard Inc
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—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
    • 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
    • B03C3/025—Combinations of electrostatic separators, e.g. in parallel or in series, stacked separators, dry-wet separator combinations
    • 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
    • B03C3/08—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/36—Controlling flow of gases or vapour
    • B03C3/368—Controlling flow of gases or vapour by other than static mechanical means, e.g. internal ventilator or recycler
    • 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
    • B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
    • 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
    • B03C2201/04—Ionising electrode being a wire

Definitions

  • the first section may include one or more pairs of positively charged vertical plates between each pair of which are positioned a plurality of negatively charged vertical wires, so that a corona discharge may be developed between the vertical wires and the two parallel plates of each pair.
  • the second section which is contiguous to the end of the first section, includes a plurality of grids which are parallel to each other, but perpendicular to the plates of the first section.
  • the first grid of the second section may be charged to a positive potential, and the remaining grids are arranged in different charged formations so that particles of matter entering the second section will be urged to turn back so that the particles may be collected and removed from the fluid medium.
  • This invention relates to electrical precipitators and, more particularly, to apparatus and equipments for the precipitation of dust, dirt or other particulate matter which may be included with or suspended in, a fluid medium such as air or gas.
  • the prior application discloses arrangements of an electrostatic precipitator for the removal of particulate matter borne by a fluid medium such as air or gas.
  • the electrostatic precipitator of the earlier application embodies two series sections.
  • the rst section embodies one or more pairs of parallel metallic plates and a plurality of conductors which are parallel to each other and aligned between the two parallel plates of each pair so that, upon the application of a sufficient voltage between the parallel plates and the intervening conductors, a corona discharge may be established between the plates of each pair and the several related conductors so that particulate matter transmitted along the path between the two parallel plates of each pair will be deflected toward the two plates.
  • the second section may include two or three parallel grids which are parallel to each other but perpendicular to the plates of the first section and so arranged that an electrostatic field may be established between the adjacent grids.
  • the first grid would normally be brought to substantially the same charge as the plates of the first section, that is, to a positive potential (which may be grounded).
  • the third grid if a third grid is ernployed, would be charged to the same potential as the Iirst grid, but the second grid would be charged to negative potential.
  • the electrostatic field established between the grids of the second section acts on the particles that leave the first section and repels them so that they may be collected on the grids of the second section so that they may be removed from the system.
  • the network of electrostatic fields established in the second section will have more time to act on the particulate matter, thereby slowing down the particulate matter and sweeping the particulate matter to the collecting grids or boundaries.
  • the material increase in the number of grids serves to engulf the particulate matter in eddies and to considerably increase the number of chances that dust or other particles carried by the gas or other fluid medium will become engaged in the eddy pockets, not only to slow down the particles -but also to remove them from the stream of uid traversing the second section.
  • One of the principal objects of the present invention is to improve the operational characteristics of an electrostatic precipitator by including a plurality of charged grids so as to provide more opportunities for defiecting and removing particles of matter that enter the precipitator.
  • Such an arrangement if added to a conventional precipitator, will improve its efiiciency.
  • the rst section When such a multi-grid structure is joined to a conventional rst section, the rst section may be reduced in length so that shorter plates may be employed along with a smaller number of parallel conductors between the plates of the irst section. This, therefore, reduces the cost of the overall precipitator while at the same time achieving at least an equal efiiciency in the removal of particulate matter from the fiuid stream.
  • the term grid refers to any perforated structure which is capable of holding an electrical charge and has one or more apertures, which may or may not be regularly spaced, for transmitting lluid.
  • FIG. l discloses and illustrates a cross section of a dual section electrostatic precipitator embodying a plurality of pairs of oppositely poled grids sequentially arranged in its second section
  • FIG. 2 illustrates a cross section of another dual section electrostatic precipitator embodying a plurality of grids in the second section to which voltages are applied which increase in magnitude in the downstream path
  • FIG. 3 illustrates a cross section of a third dual section arrangement in which the second section embodies two grids which are oppositely poled, between which are interposed a plurality of additional grids, sometimes called floating grids.
  • the first section includes three or more vertical parallel plate conductors such as P-1, P-Z, VP-3, etc., organized as a group or groups and arranged so that a plurality of vertical conductors W-10, W-11, W-12 etc., one of the groups are interposed midway between the plates P-2 and P-3 and a plurality of vertical conductors W-20, W-21, W-22, etc., another of the groups are interposed midway between the vertical plates P-3 and P-4, etc.
  • the second section includes, for illustrative purposes, seven parallel grids G-l to G-7.
  • Plates P-l, P-2, P-3, etc., of the first section may be supplied with substantially equal voltages of the same polarity, for example, positive voltages as shown, while the conductors W-10, W-11, WH12 of one path of the first section and the conductors W-20, W-Zl, W-22 of the other path of the first section have applied thereto negative voltages with respect to the several plates between which the conductors are interposed.
  • a common source of appropriately high voltage may be so arranged that its positive terminal is connected to the several plates P-l, P2 and P-3 and its negative terminal will be connected to the conductors W-10, W-11, W-12, as well as to conductors W-20, W-21, W-ZZ.
  • the grids G-l to G-7 of the second section are poled so that the same positive voltage will be applied to the alternate grids G1, G-3, G-S and G-7 while the corresponding negative voltage will be applied to the alternate grids G-2 G-4 and G-6.
  • the voltages that may be employed in practice may be 40 or more kilovolts as developed by a D.C. source.
  • the stream of gas or other fluid with the accompanying entrained dust, dirt or other particulate matter which may be obtained from any source of such dust, dirt or particulate matter, such as a gas engine or a smoke stack, or a factory, for example, is impelled by a fan or other blower (not shown), the particulate matter will be driven between the several parallel paths of the first section, one path being provided by plates P-1 and P-2 and another path by plates P-2 and P-3.
  • any particulate matter not removed by the first or conventional section will enter the second section which includes the several grids G1 to G-'7 which, as already noted, are equally spaced from each other and are parallel to each other and are also perpendicular to the plates P-l, P-2 and P-3 of the first section.
  • the electrostatic field in the first section that is, the electrostatic field between each of the wires W-10, W-11 and W-12 and the adjacent plates P-1 and P-Z and the electrostatic field between the wires W*20, W-21 and W-ZZ and the adjacent plates P-3- and P-4, are substantially perpendicular to the fiow path of the particulate matter transmitted through the first section.
  • the electrostatic field between any pair of adjacent grids G1 and G-2, or G-3 and G-4, etc., of the second section is substantially parallel to the direction of movement of the particulate matter which traverses or escapes from the first section and enters the second section.
  • each conductor such as W- or W-20 serves as a discharge electrode producing a negative corona discharge effect so that the entire space in the region of these various conductors is subjected to the corona field.
  • These negatively charged wires such as W-10 and W-20, attract many of particles of matter which have positive charges thereon.
  • the positively charged plates P-l, P-2 and P-3 attract and serve as collectors of the negatively charged particles.
  • a good proporation of the particles are attracted to and are deposited on the surfaces of the plates P-1, P-2 and P-3 or on the conductors W-10 to W-12 and W-20 to W-22.
  • any of the particles that traverse the first section because they have not been sufficiently attracted by the positively charged plates or the negatively charged conductors of the first section and, therefore, have not been deposited on the plates or conductors and removed, will enter the second section.
  • the particles entering the second section may contain not only negatively charged particles 4 but also positively charged particles. Both types of particles will be treated by the second section.
  • the FIG 1 arrangement is capable of acting on and removing, and does remove, bothpositively and negatively charged particles that may be passed by the first section of the precipitator and received by its second section.
  • the peak voltage in the second section need not be the same as the voltage in the first section.
  • the voltage applied to the second section may be higher or lower than the voltage applied to the first section as may be desired.
  • the voltages applied to either section may be a steady D.C. or pulsed D.C. as desired.
  • This type of bi-polar arrangement has been found to be quite efficient in removing a very high ⁇ percentage of particulate matter which is transmitted through the filter.
  • the length of the plates P-l, P-2 and P-3, of the first section and the number of vertical conductors such as W-10 and W-20 in the first section may be reduced.
  • the reduction in the length of the plates and in the number of vertical conductors materially affects the overall length of the equipment as well as the cost of the equipment and its installation and at the same time, there is an improvement in the overall efficiency of the particle collecting features.
  • FIG. 2 differs from FIG. l in that the' second section embodies a grid G-11 which has the same polarity as the grid G1 of FIG. l, but the succeeding grids G12, G-13, G-14, G-15 and G-16 are all similar in structure to the grids of the second section of FIG. l, but they have applied to them negative voltages which increase in magnitude in the downstream direction.
  • the voltage on the grid G-12 may be a negative voltage with respect to the positive voltage on grid G-11
  • the voltage on grid G-13 may be twice the negative voltage on grid G-12
  • the negative voltage on grid G-14 may be three times the voltage on grid G-12, and So on.
  • the arrangement of FIG. 2 is especially suitable for removing particulate mat ⁇ ter which is negatively charged.
  • the grid G-12 due to its negative applied voltage, will repel negatively charged particles which enter the region between grids G-11 and G-12 and drive them toward the positively charged grid G-11 to be removed.
  • negatively charged particles that enter the region between grids G-12 and G-13 will be repelled by the standing voltage on grid G-13 and be driven back toward grid G- 12where they may be removed. And so on.
  • any particle that survives a particular grid, such as G-12 will be repelled by the succeeding grids G-13, G-14 and so on.
  • the overall collection probability of particles, and the efiiciency of system increase with the numberof grids employed. Each succeeding grid bears a higher repelling voltagie as indicated, but the effective repellingielectric field remains the same between each successive pair of grids.
  • FIG. 2 Although the arrangement of FIG. 2 hasbeen shown and described as employed essentially for removing negatively charged particles, it will be apparent that by reversing the polarities of the various electrodes, a corresponding effect can be produced with respect to positively charged particles.
  • the voltages on grids G-12 to G-16 need not be linearly or arithmetically arranged.
  • the voltages may be arranged in any desired voltage escalation, whether linear or nonlinear.
  • negatively poled grids such as G-12 to G-16, may serve to attract and remove some or many of the positively charged particles encountered.
  • FIG. 3 illustrates a modified form of arrangement in which the grid G-21 of the second section is similar to the grid G-11 of FIG. 2, while the terminal grid G-26 is similar to the grid G-16 of FIG. 2.
  • the intermediate grids G-22, G-23, G-24 and G-25 are floating grids in that no voltage is directly applied thereto, but voltages are induced on the several grids G-22 to GV-25.
  • the grids G-21 and G-26 have respective positive and negative applied polarities, and the voltage is, for example, 40 kv., as shown
  • the grid G-22 will have induced thereon on 8 kv. voltage of a negative polarity
  • the' grid G-23 will have a negative 16 kv. induced voltage
  • the grids G-24 and G-ZS will have induced negative 24 and 32 kv. voltages, as shown. And so on if additional grids or different applied voltages were employed.
  • each ngative particle traversing the G-Zl will be deflected by theinduced negative voltage on grid G-ZZ to repel and turn back the negatively charged particle to grid G-21 where it may be collected and removed.
  • the increased induced voltages on the remaining downstream grids G-ZZ to G-25 will repel negatively charged particles that reach the regions of the respective grids and deflect and turn back such negatively charged particles to the various grids G- 21 to G-25, which may attract and collect the negatively charged particles and, therefore, remove them from the air stream.
  • the number of grids linterposed between the two outer grids G-21 and G-26 may be increased or decreased as desired for increasing or decreasing the trend toward reversing the path of any negatively charged particles to the first grid G-21. It will be apparent, moreover, that the same effect may be produced on positively charged particles by reversing the polarities of the several grids of the second section.
  • the several arrangements shown and illustrated in the drawing serve to improve the efficiency of collection and elimination of particles passing through the parallel and sequential paths of the electrostatic precipitator. Those particles that reach the second section are slowed down and, at the same time, they are turned around. As the particles are slowed down, there are greater and improved opportunities to cause the particles to turn around and be fed back in the direction of the first grid of the second section so that such particles may be collected and removed. Furthermore, because of the increased efficiency of the second section of the several arrangements of this invention, the first section may be simplified so that smaller components may be employed and the number of conductors reduced, thereby reducing the cost of the overall equipment and improving its operation at the same time.
  • the equipment of this invention may be made suitable for those other purposes for which electrostatic precipitators of the kind herein described are conventionally employed. Naturally, any suitable means for receiving and accumulating particles removed by the various elements of both sections may be employed in the practice of this invention.
  • the elements of the rst section are parallel to each other and the elements of the second section are likewise parallel to each other, their relative directions may be changed over considerable angles within the scope and spirit of this invention.
  • the several elements are shown as linear or are linearly arranged, the various elements may be curved to be spherical or elliptical or of any other desired shape within the scope and spirit of this invent-ion.
  • An electrostatic precipitator for operating on a gas upon which electrically charged particles of matter are superimposed and travelling in substantially linear paths, comprising a plurality of apertured grids which are parallel to each other and positioned substantially perpendicular to said paths so that the gas and the particles superimposed thereon travel through the apertures of said grids, means for applying a voltage of one polarity to the first of said grids and for applying to the others of said grids respective voltages of the opposite polarity but of ascending magnitudes corresponding to their spacing from the rst grid, so that particles charged to a polarity opposite to that of the first grid will be deected by said other grids toward the first grid.
  • An electrostatic precipitator including means for charging the particles to be moved through said grids to a polarity which will be opposite to that applied to the first grid.
  • An electrostatic precipitator including a corona field generator for polarizing particles which are to traverse the grids.

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  • Electrostatic Separation (AREA)
US869195A 1969-10-24 1969-10-24 Multistage electrostatic precipitator Expired - Lifetime US3616606A (en)

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DE (1) DE2026482A1 (de)
FR (1) FR2065493B1 (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807144A (en) * 1972-01-31 1974-04-30 P Graybill Air rectifiers, apparatus with process
US3907520A (en) * 1972-05-01 1975-09-23 A Ben Huang Electrostatic precipitating method
US3966435A (en) * 1974-05-02 1976-06-29 Penney Gaylord W Electrostatic dust filter
US3973933A (en) * 1973-08-14 1976-08-10 Senichi Masuda Particle charging device and an electric dust collecting apparatus
US3980455A (en) * 1973-08-14 1976-09-14 Senichi Masuda Particle charging device and an electric dust collecting apparatus making use of said device
US4406671A (en) * 1981-11-16 1983-09-27 Kelsey-Hayes Company Assembly and method for electrically degassing particulate material
WO1990007982A1 (en) * 1989-01-20 1990-07-26 Fläkt Ab Arrangement for cleaning ventilation air polluted with paint particles
US5445798A (en) * 1992-11-24 1995-08-29 Mitsubishi Denki Kabushiki Kaisha Microbe propagation preventing apparatus and microbe propagation preventing method
US5695549A (en) * 1996-04-05 1997-12-09 Environmental Elements Corp. System for removing fine particulates from a gas stream
US5961693A (en) * 1997-04-10 1999-10-05 Electric Power Research Institute, Incorporated Electrostatic separator for separating solid particles from a gas stream
US20040149132A1 (en) * 2002-12-09 2004-08-05 Hajrudin Pasic Electrostatic sieving precipitator
US20110056372A1 (en) * 2009-09-04 2011-03-10 Rutgers, The State University Of New Jersey Electrostatic screen device and method for emission control
US8167984B1 (en) * 2008-03-28 2012-05-01 Rogers Jr Gilman H Multistage electrically charged agglomeration system
US20140041519A1 (en) * 2009-09-04 2014-02-13 Rutgers, The State University Of New Jersey Electrostatic screen device and method for emission control
JP2017119247A (ja) * 2015-12-28 2017-07-06 株式会社富士通ゼネラル 電気集塵装置および空気調和機

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2340716A1 (de) * 1972-11-02 1975-02-20 8601 Steinfeld Einrichtung zur elektronischen staubabscheidung
DE10110156B4 (de) * 2001-03-02 2009-01-02 Riebel, Ulrich, Prof. Dr.-Ing. Verfahren zur Verdünnung von Aerosolen bei der Messung der Aerosolkonzentration und Vorrichtung zur Durchführung des Verfahrens

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1127332B (de) * 1955-08-30 1962-04-12 Westinghouse Electric Corp Elektrostatischer Abscheider
GB849928A (en) * 1957-07-22 1960-09-28 William Donald Bamford Improvements in or relating to apparatus for removing suspended matter from a gas stream
DE1295526B (de) * 1962-04-03 1969-05-22 Philipowich Alexander Elektrostatischer Staubabscheider mit drehbaren Flaechenelektroden
DE1457130A1 (de) * 1964-01-02 1969-04-17 Siemens Ag Vorrichtung zur Beeinflussung der Fluggeschwindigkeit und der Flugbahn von Aerosol-Partikeln

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807144A (en) * 1972-01-31 1974-04-30 P Graybill Air rectifiers, apparatus with process
US3907520A (en) * 1972-05-01 1975-09-23 A Ben Huang Electrostatic precipitating method
US3973933A (en) * 1973-08-14 1976-08-10 Senichi Masuda Particle charging device and an electric dust collecting apparatus
US3980455A (en) * 1973-08-14 1976-09-14 Senichi Masuda Particle charging device and an electric dust collecting apparatus making use of said device
US3966435A (en) * 1974-05-02 1976-06-29 Penney Gaylord W Electrostatic dust filter
US4406671A (en) * 1981-11-16 1983-09-27 Kelsey-Hayes Company Assembly and method for electrically degassing particulate material
WO1990007982A1 (en) * 1989-01-20 1990-07-26 Fläkt Ab Arrangement for cleaning ventilation air polluted with paint particles
US5445798A (en) * 1992-11-24 1995-08-29 Mitsubishi Denki Kabushiki Kaisha Microbe propagation preventing apparatus and microbe propagation preventing method
US5695549A (en) * 1996-04-05 1997-12-09 Environmental Elements Corp. System for removing fine particulates from a gas stream
US5961693A (en) * 1997-04-10 1999-10-05 Electric Power Research Institute, Incorporated Electrostatic separator for separating solid particles from a gas stream
US6096118A (en) * 1997-04-10 2000-08-01 Electric Power Research Institute, Incorporated Electrostatic separator for separating solid particles from a gas stream
US20040149132A1 (en) * 2002-12-09 2004-08-05 Hajrudin Pasic Electrostatic sieving precipitator
US6878192B2 (en) 2002-12-09 2005-04-12 Ohio University Electrostatic sieving precipitator
US8167984B1 (en) * 2008-03-28 2012-05-01 Rogers Jr Gilman H Multistage electrically charged agglomeration system
US20110056372A1 (en) * 2009-09-04 2011-03-10 Rutgers, The State University Of New Jersey Electrostatic screen device and method for emission control
US20140041519A1 (en) * 2009-09-04 2014-02-13 Rutgers, The State University Of New Jersey Electrostatic screen device and method for emission control
US8721767B2 (en) * 2009-09-04 2014-05-13 Rutgers, The State University Of New Jersey Electrostatic screen device and method for emission control
US9333512B2 (en) * 2009-09-04 2016-05-10 Rutgers, The State University Of New Jersey Electrostatic screen device and method for emission control
JP2017119247A (ja) * 2015-12-28 2017-07-06 株式会社富士通ゼネラル 電気集塵装置および空気調和機

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Publication number Publication date
CA943872A (en) 1974-03-19
DE2026482A1 (de) 1971-05-06
FR2065493B1 (de) 1974-05-03
FR2065493A1 (de) 1971-07-30

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