EP0658380A1 - Dispositif pour la séparation de particules de poussière des gaz effluents - Google Patents

Dispositif pour la séparation de particules de poussière des gaz effluents Download PDF

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Publication number
EP0658380A1
EP0658380A1 EP94810704A EP94810704A EP0658380A1 EP 0658380 A1 EP0658380 A1 EP 0658380A1 EP 94810704 A EP94810704 A EP 94810704A EP 94810704 A EP94810704 A EP 94810704A EP 0658380 A1 EP0658380 A1 EP 0658380A1
Authority
EP
European Patent Office
Prior art keywords
filter
precharger
electrodes
dust particles
metal
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.)
Withdrawn
Application number
EP94810704A
Other languages
German (de)
English (en)
Inventor
Dr. Andreas Kwetkus
Dr. Oliver Riccius
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
Original Assignee
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ABB Research Ltd Switzerland, ABB Research Ltd Sweden filed Critical ABB Research Ltd Switzerland
Publication of EP0658380A1 publication Critical patent/EP0658380A1/fr
Withdrawn legal-status Critical Current

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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
    • B03C3/14—Plant or installations having external electricity supply dry type characterised by the additional use of mechanical effects, e.g. gravity
    • B03C3/155—Filtration
    • 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
    • B03C3/28—Plant or installations without electricity supply, e.g. using electrets
    • B03C3/30—Plant or installations without electricity supply, e.g. using electrets in which electrostatic charge is generated by passage of the gases, i.e. tribo-electricity
    • 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

Definitions

  • the invention relates to a device for removing dust particles from exhaust gases, with a surface filter arranged in a filter housing, in which a precharger is provided for charging the dust particles before they reach the surface filter, the precharger comprising high-voltage and ground electrodes, which are attached to a high voltage source are connected.
  • the invention has for its object to provide a device for removing dust particles from exhaust gases, which can be easily retrofitted to existing filter systems, enables optimal pre-charging and practically no dust separation occurs in the pre-charger.
  • the invention is based on the knowledge that high separation rates in the particle filter can be achieved without the aid of electrical fields if optimally pre-charged Impact particles on the particle filter. This is achieved by the double grille arrangement according to the invention outside the filter housing in the exhaust pipe.
  • the inventive placement of the precharger in the exhaust pipe shortly before entering the particle filter has an additional effect: at the prevailing high flow velocities of typically 10 m / sec. and more, there is no longer any dust separation in the precharger because such particles are immediately carried away by the flow. This eliminates the otherwise necessary measures for cleaning and dust removal in or on the pre-charger, which significantly simplifies the construction.
  • the precharger according to the invention can be easily retrofitted, whereby the separation performance of the surface filter can be increased considerably without intervening in the filter itself. If the pre-charging is not sufficient, several double grids can be combined in series in one structural unit, again without interfering with the actual particle filter, or several structural units can be arranged one behind the other.
  • the device shown in Fig. 1 for removing dust particles from exhaust gases comprises a surface filter arranged in a filter housing 1, e.g. a bag filter 2, and a precharger (4) built into the exhaust pipe 3 leading to the surface filter 2.
  • a surface filter arranged in a filter housing 1, e.g. a bag filter 2, and a precharger (4) built into the exhaust pipe 3 leading to the surface filter 2.
  • the construction and functioning of surface filters are known.
  • the pre-charger 4 is designed as an independent structural unit and is mounted by means of flanges 5, 6 (FIG. 2) in the exhaust pipe 3 shortly before entering the filter housing 1.
  • FIGS. 2 and 3 it has a metallic housing 7, the free cross section of which corresponds to that of the exhaust pipe 3.
  • metallic grids 8, 9 made of criss-cross-tensioned metal wires, metal strips or metal rods are provided in the housing 7 at a distance of typically 100 mm.
  • the three grids labeled 8 are at ground potential and are directly connected to the housing wall. They form the mass electrodes.
  • the grids 9 located between the ground electrodes (grids 8) are held in a metallic frame 9a which is fastened in an electrically insulated manner to the housing 7 by means of insulators 10a, 10b.
  • the upper insulators 10a also serve as an electrical feedthrough for the high-voltage connection 11 of the grid 9.
  • the grids 9 form the spray electrodes.
  • the grids 8 and 9 are each connected in parallel and each connected to one and the other pole of a voltage source 12, which supplies a DC voltage in the order of 40-100 kVolt.
  • a particularly effective charging of the dust particles in the pre-charger 4 can be achieved if the mesh sizes of the two grids 8 and 9 are different, it being less important whether the grid 8 lying at ground potential or the high-voltage grid 9 has the smaller mesh size.
  • the two grids 8 and 9 are each clamped in a metal frame 13 and 14, which in turn are fastened in a housing 7a made of insulating material. High-voltage connection 15 and ground connection 16 of the grids 8 and / or are led out through the housing wall. In this embodiment too, the mesh sizes of both grids 8, 9 are selected differently for the reasons mentioned above.
  • FIG. 8 For example, grid elements in the form of a saw blade 21 (FIG. 9) are possible, the tips also preferably pointing in the direction of the grid 8 here.
  • Zigzag-shaped grid elements 22 (FIG. 10) are also suitable. All of these electrode geometries offer little flow resistance for the exhaust gas flowing through them. They can all be clamped in one frame. No filter dust collects on them either.

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  • Electrostatic Separation (AREA)
EP94810704A 1993-12-16 1994-12-07 Dispositif pour la séparation de particules de poussière des gaz effluents Withdrawn EP0658380A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4342965 1993-12-16
DE4342965A DE4342965A1 (de) 1993-12-16 1993-12-16 Einrichtung zur Entfernung von Staubpartikeln aus Abgasen

Publications (1)

Publication Number Publication Date
EP0658380A1 true EP0658380A1 (fr) 1995-06-21

Family

ID=6505212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810704A Withdrawn EP0658380A1 (fr) 1993-12-16 1994-12-07 Dispositif pour la séparation de particules de poussière des gaz effluents

Country Status (4)

Country Link
EP (1) EP0658380A1 (fr)
CA (1) CA2138118A1 (fr)
DE (1) DE4342965A1 (fr)
ZA (1) ZA949968B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997034701A1 (fr) * 1996-03-16 1997-09-25 Pifco Limited Traitement de polluants particulaires
JP2003513782A (ja) * 1999-11-11 2003-04-15 インディゴ テクノロジーズ グループ プロプライアタリー リミテッド 粒子凝集の方法および装置
CN108800181A (zh) * 2018-07-24 2018-11-13 清华大学 诱导除尘装置、炉具诱导除尘设备及炉具

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006026372B4 (de) * 2006-06-07 2012-05-31 Deutsches Zentrum für Luft- und Raumfahrt e.V. Abgasreinigungsvorrichtung für Brennstoffaggregate

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672948A (en) * 1952-12-09 1954-03-23 Trion Inc Ionizing unit for electrostatic filters
DE1007296B (de) * 1954-12-10 1957-05-02 Eugen Feifel Dr Ing Zweizonenfilter mit kontaktelektrischer Aufladung
US3910779A (en) * 1973-07-23 1975-10-07 Gaylord W Penney Electrostatic dust filter
WO1993020944A1 (fr) * 1992-04-17 1993-10-28 Monsanto Japan Limited Appareil et procede pour eliminer de fines particules

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1059253A (en) * 1912-06-04 1913-04-15 Glenn Randolph Wimbish Electrified wire-mesh screen.
US1428839A (en) * 1919-02-25 1922-09-12 Westinghouse Electric & Mfg Co Ionizing electrode for precipitating apparatus
CH109892A (fr) * 1924-05-14 1925-05-16 Minami Manshu Tetsudo Kabushik Installation pour intercepter et récupérer la poussière en suspension dans certains gaz tels que, par exemple, la fumée émise par des fours industriels.
FR766263A (fr) * 1933-12-30 1934-06-25 Chanrys Carburation Generale E Appareil ioniseur de gaz, air et vapeurs
JPS53140675A (en) * 1977-05-14 1978-12-07 Hitachi Ltd Filter type dust collecting device
DE3415489C1 (de) * 1984-04-26 1985-06-05 Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen Anlage für die Entschwefelung von Rauchgas hinter einer Kesselfeuerung
DE3502448A1 (de) * 1985-01-25 1986-07-31 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zum entfernen von russpartikeln und anderen festkoerperteilchen aus dem abgas von kraftfahrzeugen
CH683321A5 (de) * 1990-08-30 1994-02-28 Asea Brown Boveri Verfahren zum Entfernen von Staub aus einem Gasstrom und Entstaubungsanlage.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672948A (en) * 1952-12-09 1954-03-23 Trion Inc Ionizing unit for electrostatic filters
DE1007296B (de) * 1954-12-10 1957-05-02 Eugen Feifel Dr Ing Zweizonenfilter mit kontaktelektrischer Aufladung
US3910779A (en) * 1973-07-23 1975-10-07 Gaylord W Penney Electrostatic dust filter
WO1993020944A1 (fr) * 1992-04-17 1993-10-28 Monsanto Japan Limited Appareil et procede pour eliminer de fines particules

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
K.OHTSUKA ET AL, JOURNAL OF ELECTROSTATICS, vol. 18, no. 1, February 1986 (1986-02-01), AMSTERDAM NL, pages 93 - 102 *
R.HELSTROOM ET AL, JOURNAL OF ELECTROSTATICS, vol. 19, no. 3, July 1987 (1987-07-01), AMSTERDAM NL, pages 299 - 321 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997034701A1 (fr) * 1996-03-16 1997-09-25 Pifco Limited Traitement de polluants particulaires
JP2003513782A (ja) * 1999-11-11 2003-04-15 インディゴ テクノロジーズ グループ プロプライアタリー リミテッド 粒子凝集の方法および装置
CN108800181A (zh) * 2018-07-24 2018-11-13 清华大学 诱导除尘装置、炉具诱导除尘设备及炉具

Also Published As

Publication number Publication date
DE4342965A1 (de) 1995-06-22
ZA949968B (en) 1995-08-23
CA2138118A1 (fr) 1995-06-17

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