US3362135A - Electrostatic dust filter - Google Patents

Electrostatic dust filter Download PDF

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Publication number
US3362135A
US3362135A US605257A US60525766A US3362135A US 3362135 A US3362135 A US 3362135A US 605257 A US605257 A US 605257A US 60525766 A US60525766 A US 60525766A US 3362135 A US3362135 A US 3362135A
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United States
Prior art keywords
web
spark
electrodes
points
emitting
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
Application number
US605257A
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English (en)
Inventor
Steuernagel Walter
Eishold Horst-Gunter
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.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
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Filing date
Publication date
Application filed by Metallgesellschaft AG filed Critical Metallgesellschaft AG
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Publication of US3362135A publication Critical patent/US3362135A/en
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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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • 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
    • 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
    • B03C3/51—Catch- space electrodes, e.g. slotted-box form

Definitions

  • Electrostatic dust filters are composed of walls of precipitating electrodes forming a gas passageway in which are mounted spark or emitting electrodes which have spark points for producing the corona for the electrical field.
  • these spark points are directed toward definite precipitating electrode surface portions.
  • such spark points are directed toward the dust collecting pockets formed in the precipitating electrodes.
  • the electrical field is disturbed which causes a detrimental effect on the amount of dust precipitation.
  • the displacement of the individual emitting electrode wires from the center line of the gas passageway results in difficulties in mounting the emitting electrode frames and/ or the emitting electrodes within the frame.
  • a gas passageway is formed between two walls composed of rows of individual precipitating electrodes.
  • Each electrode is composed of a central web, side portions lying in a plane offset from the plane of the web, S-shaped bent portions joining the side portions to the web, with the S-shaped portions being slightly curved over the web, and with the side portions each having a width about one-half of the width of the web. Edge portions on the side portions are curved toward the web in the form of hooks and the individual precipitating electrodes are hooked together by such edge portions.
  • the spark emitting electrodes are mounted in the gas passageway between the precipitating walls with the spark points of two emitting electrodes directed toward a web formed dust collecting pocket and the spark points of one 3,362,135 Patented Jan. 9, 1968 emitting electrode directed toward a side portion dust collecting pocket, and with the spark points of adjacent emitting electrodes being positioned at different vertical levels, respectively.
  • This filter arrangement produces an improved amount of dust precipitation over heretofore used arrangements by the asymmetrical positioning of the spark points to the left, right, right, left, in the direction of gas flow.
  • By vertically separating the spark points directed to the larger web dust pocket the interference in the electrical field caused by the points is almost completely eliminated.
  • Another advantage lies in the improved utilization of the oppositely faced precipitating electrode wall surfaces.
  • FIGURE 1 is a front elevational view of a row of precipitating electrodes forming an electrode wall
  • FIGURE 2 is a cross-sectional view through a gas passageway extending between two electrode walls formed of rows of individual precipitating electrodes.
  • Each individual precipitating electrode 1 has a center Web 2 which is offset from the plane containing the two side portions 3. These side portions are connected to the web by means of S-shaped portions 4. The edges 5 of the side portions 3 are bent inwardly toward the web in the form of books. As shown in the drawings, each side portion 3 has a width equal to about one-half of the width of the web 2, Crimped rib 6 can be formed in the web 2 for additional reinforcement.
  • the emitting or spark electrodes 7 in the center of the passageway between the two electrode walls have emitting points 8 directed so that they point to the pocket formed by the Web or to a pocket formed by the side portions.
  • One spark electrode with its points is always provided for the pockets formed by the side portions 3 while two spark electrodes 7 with their points 8 are provided for the pockets formed by the webs 2.
  • the dust 9 is precipitated in circular areas on the electrodes because of the directional effect of the points 8.
  • the part of the spark electrode on the other side of the point 8 has a rounded spark emitting surface to produce a precipitation of dust on the opposite wall, this dust is not shown in the drawing.
  • the individual electrodes are combined to form the wall 10.
  • each web dust collecting pocket 2' is served by two emitting electrodes 7 which have their spark points 8 directed toward pocket 2.
  • Each side portion collecting pocket 3 is served by one emitting electrode 7 with its spark points directed toward that pocket.
  • the spark points 8 on the adjacent emitting electrodes 7 are positioned at different vertical levels so that the electrical field interference between the electrodes is limited.
  • the dust 9 the collection of dust in web pockets 2 is collected on a larger effective area of the precipitating electrode because of the positioning of the spark points.
  • An electrostatic dust separator comprising two substantially parallel precipitating walls spaced from each other and defining a gas passageway therebetween; each wall being composed of a row of individual precipitating electrodes; each said electrode being composed of a central substantially rectangular planar web, two rectangular substantially planar side portions lying substantially in the same plane, S-shaped bent portion joining each of said side portions to opposite edges of said web and offsetting the plane of said side portions from the plane of the web, said S-shaped portions being curved slightly over said web, said side portions being of equal width and each being about one-half the Width of said Web, and edge portions on said side portions with each edge portion being bent in the form of a hook whose terminal end is directed toward said web, said individual precipitating electrodes being alternately faced and hooked together by said edge portions and forming a precipitating wall with at least some of said webs and said side portions forming dust collecting pockets; a plurality of spark emitting electrodes having vertically spaced spark points mounted thereon in said gas passageway between said walls with the spark points of the two emitting electrodes

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  • Electrostatic Separation (AREA)
US605257A 1966-01-07 1966-12-28 Electrostatic dust filter Expired - Lifetime US3362135A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0067942 1966-01-07

Publications (1)

Publication Number Publication Date
US3362135A true US3362135A (en) 1968-01-09

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ID=7312395

Family Applications (1)

Application Number Title Priority Date Filing Date
US605257A Expired - Lifetime US3362135A (en) 1966-01-07 1966-12-28 Electrostatic dust filter

Country Status (3)

Country Link
US (1) US3362135A (de)
AT (1) AT277400B (de)
DE (1) DE1557132A1 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3482375A (en) * 1968-01-25 1969-12-09 Kloeckner Humboldt Deutz Ag Electrofilter with corrugated sheet metal-type collecting electrodes
US3803809A (en) * 1972-07-13 1974-04-16 Metallgesellschaft Ag Electrostatic precipitator
US3912467A (en) * 1973-04-06 1975-10-14 High Voltage Engineering Corp Moving electrode electrostatic particle precipitator
US3950153A (en) * 1972-12-11 1976-04-13 Berckheim Graf Von Electrostatic precipitator
US4007023A (en) * 1974-07-12 1977-02-08 Metallgesellschaft Aktiengesellschaft Electrostatic precipitator with collector-electrode spacers
US4326861A (en) * 1977-04-28 1982-04-27 Metallgesellschaft Aktiengesellschaft Dust-collecting assembly for electrostatic precipitator
US4614526A (en) * 1984-03-10 1986-09-30 Metallgesellschaft Aktiengesellschaft Dust collector with improved collecting electrodes
US4647296A (en) * 1985-11-08 1987-03-03 Mississippi Power Company Spacers for straightening warped precipitator curtains
US5366239A (en) * 1993-09-27 1994-11-22 Trw Inc. Air bag inflator assembly
EP1297894A3 (de) * 2001-09-29 2006-03-29 GEA Delbag- Lufttechnik GmbH Ionisator für ein Filtergerät
JP2012091080A (ja) * 2010-10-25 2012-05-17 Daikin Industries Ltd 集塵装置
CN104492219A (zh) * 2015-01-04 2015-04-08 中国石油大学(华东) 一种除雾霾装置和方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE684342C (de) * 1937-11-13 1939-11-27 Siemens Lurgi Cottrell Elektro Elektrofilter mit gewellten Niederschlagselektroden
US2195431A (en) * 1935-10-09 1940-04-02 Koppers Co Inc Gas treating apparatus
DE752566C (de) * 1939-02-22 1953-05-18 Patentverwertung Elektrofilter mit im Zuge der Gasstroemung aufeinanderfolgender spruehender Aufladung und spruehentladungsfreier Abscheidung der Schwebeteilchen
GB858870A (en) * 1958-08-16 1961-01-18 Wolf Safety Lamp Company Wm Ma Improvements in or relating to safety lamps
GB878869A (en) * 1959-08-04 1961-10-04 Carves Simon Ltd Improvements relating to electrostatic precipitators
CA687858A (en) * 1964-06-02 M. Keesling Frank Discharge electrode for electrical precipitator
GB963109A (en) * 1962-07-04 1964-07-08 Metallgesellschaft Ag A collecting electrode for an electrostatic precipitator
US3282029A (en) * 1963-06-19 1966-11-01 Metallgesellschaft Ag Emitting electrode construction for electrostatic separators

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA687858A (en) * 1964-06-02 M. Keesling Frank Discharge electrode for electrical precipitator
US2195431A (en) * 1935-10-09 1940-04-02 Koppers Co Inc Gas treating apparatus
DE684342C (de) * 1937-11-13 1939-11-27 Siemens Lurgi Cottrell Elektro Elektrofilter mit gewellten Niederschlagselektroden
DE752566C (de) * 1939-02-22 1953-05-18 Patentverwertung Elektrofilter mit im Zuge der Gasstroemung aufeinanderfolgender spruehender Aufladung und spruehentladungsfreier Abscheidung der Schwebeteilchen
GB858870A (en) * 1958-08-16 1961-01-18 Wolf Safety Lamp Company Wm Ma Improvements in or relating to safety lamps
GB878869A (en) * 1959-08-04 1961-10-04 Carves Simon Ltd Improvements relating to electrostatic precipitators
GB963109A (en) * 1962-07-04 1964-07-08 Metallgesellschaft Ag A collecting electrode for an electrostatic precipitator
US3282029A (en) * 1963-06-19 1966-11-01 Metallgesellschaft Ag Emitting electrode construction for electrostatic separators

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3482375A (en) * 1968-01-25 1969-12-09 Kloeckner Humboldt Deutz Ag Electrofilter with corrugated sheet metal-type collecting electrodes
US3803809A (en) * 1972-07-13 1974-04-16 Metallgesellschaft Ag Electrostatic precipitator
US3950153A (en) * 1972-12-11 1976-04-13 Berckheim Graf Von Electrostatic precipitator
US3912467A (en) * 1973-04-06 1975-10-14 High Voltage Engineering Corp Moving electrode electrostatic particle precipitator
US4007023A (en) * 1974-07-12 1977-02-08 Metallgesellschaft Aktiengesellschaft Electrostatic precipitator with collector-electrode spacers
US4326861A (en) * 1977-04-28 1982-04-27 Metallgesellschaft Aktiengesellschaft Dust-collecting assembly for electrostatic precipitator
US4614526A (en) * 1984-03-10 1986-09-30 Metallgesellschaft Aktiengesellschaft Dust collector with improved collecting electrodes
US4647296A (en) * 1985-11-08 1987-03-03 Mississippi Power Company Spacers for straightening warped precipitator curtains
US5366239A (en) * 1993-09-27 1994-11-22 Trw Inc. Air bag inflator assembly
EP1297894A3 (de) * 2001-09-29 2006-03-29 GEA Delbag- Lufttechnik GmbH Ionisator für ein Filtergerät
JP2012091080A (ja) * 2010-10-25 2012-05-17 Daikin Industries Ltd 集塵装置
CN104492219A (zh) * 2015-01-04 2015-04-08 中国石油大学(华东) 一种除雾霾装置和方法
CN104492219B (zh) * 2015-01-04 2016-04-06 中国石油大学(华东) 一种除雾霾装置和方法

Also Published As

Publication number Publication date
AT277400B (de) 1969-12-29
DE1557132A1 (de) 1970-03-26

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