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US3483671A - Electrostatic dust precipitator - Google Patents

Electrostatic dust precipitator Download PDF

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Publication number
US3483671A
US3483671A US687221A US3483671DA US3483671A US 3483671 A US3483671 A US 3483671A US 687221 A US687221 A US 687221A US 3483671D A US3483671D A US 3483671DA US 3483671 A US3483671 A US 3483671A
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US
United States
Prior art keywords
discharge
electrode
electrodes
electrostatic dust
pipe
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
US687221A
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English (en)
Inventor
Jean Wiemer
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
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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
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Publication of US3483671A publication Critical patent/US3483671A/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
    • 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 with two or more serrated ends or sides

Definitions

  • this invention is composed of a vertical electrostatic dust collector with pipe-type collecting electrodes, and discharge electrodes having discharge points and discharge lugs, and with discharge wires of different discharge characteristies with star-shaped cross-section and round cross-section, in which in each individual pipe-type collecting electrode, in the gas flow direction, approximately the lower third of the discharge electrode is strongly discharging, approximately the middle third is moderately discharging and the upper third is non-discharging.
  • the discharge electrodes are formed of round rods which have discharge points in approximately the first third of their length, and in the second third have discharge lugs or shorter spikes.
  • the discharge electrodes are made of rods or wires of starshaped cross-section having discharge points in the lower third and with the edges of the electrode being screened in the last third by a pipe sleeve.
  • FIGURE 1 is a vertical cross-sectional view through the electrostatic dust collector
  • FIGURE 2 is a front view of the spark or discharge electrode usable for that shown in FIGURE 1;
  • FIGURE 2a is a cross-sectional view taken on the line 2a-2a, FIGURE 1;
  • FIGURE 2b is a similar view on the line 2b2b;
  • FIGURE 2c is a similar view on the line 2c-2c;
  • FIGURE 3 is a view of the electrode in FIGURE 1;
  • FIGURES 3a, 3b, and 3c are views taken on the lines 3a3a, 3b3b, and 3c3c in FIGURE 3.
  • the gases to be cleaned enter the raw gas chamber 2 of the electrostatic dust collector having pipe-type collecting electrodes through gas inlet connection 1.
  • Below the raw gas chamber 2 is the dust hopper 3 with the dust outlet opening 4.
  • the gases to be cleaned then pass upwardly through the pipe-type collecting electrodes 5 into the clean gas chamber 6 and leave the apparatus through the gas outlet duct 7.
  • a hood 8 covers an insulator 9 from which is suspended a rod 10 holding a frame 11.
  • the discharge electrodes 12 are hung from frame 11.
  • the discharge electrodes are kept taut by means of weights 13 fastened to the lower end of the electrodes.
  • the discharge electrodes 12 in FIGURE 1 have one of the shapes shown in FIGURES 2, 3, and 4, as for example FIGURE 4.
  • the discharge electrode in FIGURE 2 consists of a round rod 12' having in the lower part discharge points 14, and in the middle part discharge lugs of shorter spikes 15.
  • the discharge electrode of FIGURE 3 consists of a rod of wire 12" of star-shaped cross-section on the lower part of which is slid a pipe 17 having discharge points 14.
  • the middle part remains as the original wire with star-shaped cross-section, while the rod edges in the upper part are screened by a pipe 18 thus resembling a round rod.
  • An electrostatic dust precipitator comprising: a separating chamber in a dust collector, a raw gas inlet at the bottom of said chamber and a clean gas outlet at the top of said chamber, a dust hopper in said dust collector and beneath said chamber and operatively associated with said chamber to receive dust therefrom, a vertical pipe collecting electrode operatively mounted in said chamber in such a manner that gas entering said inlet must pass upwardly through the space encompassed by said collecting electrode before exiting said dust collector through said outlet, the improvement comprising a discharge electrode extending axially of said collecting electrode, said discharge electrode comprising three approximately equal thirds and, in the direction of gas flow through the collecting electrode, relatively long strongly discharging discharge points (14) mounted on the first and lower third of the length of the discharge electrode, moderately discharging relatively shorter points mounted on the second and middle third of the discharge electrode, and with the last an upper third of the discharge electrode being a nondischarging rod.
  • said discharge electrode comprising a rod having a star-shaped cross-section (12"), said discharge points (14) being mounted on References Cited UNITED STATES PATENTS Schmidt et a1. 55150 X I Br adley 55-2 DENNIS E. TALBERT, JR., Assistant Examiner Anderson 55138 X v Mestor 55 152 V C Wiemer -s5 10 5s 147, 148, 151, 152

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  • Electrostatic Separation (AREA)
US687221A 1966-12-03 1967-12-01 Electrostatic dust precipitator Expired - Lifetime US3483671A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0071877 1966-12-03

Publications (1)

Publication Number Publication Date
US3483671A true US3483671A (en) 1969-12-16

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ID=7314186

Family Applications (1)

Application Number Title Priority Date Filing Date
US687221A Expired - Lifetime US3483671A (en) 1966-12-03 1967-12-01 Electrostatic dust precipitator

Country Status (4)

Country Link
US (1) US3483671A (fr)
DE (1) DE1557150A1 (fr)
FR (1) FR1547889A (fr)
GB (1) GB1146417A (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3957462A (en) * 1974-06-07 1976-05-18 Metallgesellschaft Aktiengesellschaft Ionizing electrode coated with plastics material
US4134040A (en) * 1977-10-19 1979-01-09 Koppers Company, Inc. Adapter for wire electrode assembly of an electrostatic precipitator
US4362538A (en) * 1981-08-25 1982-12-07 Dresser Industries, Inc. Wet electrostatic precipitator having means for dampening the swaying of its discharge electrodes
US4533368A (en) * 1982-09-30 1985-08-06 Black & Decker, Inc. Apparatus for removing respirable aerosols from air
US4673417A (en) * 1984-11-05 1987-06-16 Flakt Ab Rigid discharge electrode
US4904283A (en) * 1987-11-24 1990-02-27 Government Of The United States As Represented By Administrator Environmental Protection Agency Enhanced fabric filtration through controlled electrostatically augmented dust deposition
US5125936A (en) * 1988-06-03 1992-06-30 Boliden Contech Ab Emission electrode
US5254155A (en) * 1992-04-27 1993-10-19 Mensi Fred E Wet electrostatic ionizing element and cooperating honeycomb passage ways
US5395420A (en) * 1993-11-30 1995-03-07 Centro Sviluppo Materiali S.P.A. Process for using foamed slag in stainless steel production
EP0659985A1 (fr) * 1993-12-16 1995-06-28 CENTRO SVILUPPO MATERIALI S.p.A. Dispositif de précipitation des particules de gas d'échappement
EP0887108A1 (fr) * 1997-06-28 1998-12-30 Metallgesellschaft Aktiengesellschaft Electrode d'émission pour précipitateur électrostatique
US6508861B1 (en) 2001-10-26 2003-01-21 Croll Reynolds Clean Air Technologies, Inc. Integrated single-pass dual-field electrostatic precipitator and method
US20100058929A1 (en) * 2006-09-27 2010-03-11 Hitachi Plant Technologies, Ltd. Electric dust collector, discharge electrode, method for producing the discharge electrode, and method for producing discharge needle
CN104379263A (zh) * 2012-05-29 2015-02-25 丰田自动车株式会社 颗粒状物质处理装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3022806B1 (fr) * 2014-06-25 2019-06-21 Commissariat A L'energie Atomique Et Aux Energies Alternatives Collecteur electrostatique

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1252183A (en) * 1913-09-09 1918-01-01 Int Precipitation Co Apparatus for electrical separation of suspended particles from gases.
US1333790A (en) * 1915-06-28 1920-03-16 Research Corp Means for electrical treatment of gases
DE338416C (de) * 1918-01-24 1921-06-17 Siemens Schuckertwerke G M B H Verfahren und Einrichtung zum Reinigen von Gasen zwischen elektrisch geladenen Elektroden
GB413800A (en) * 1933-03-03 1934-07-26 Sturtevant Eng Co Ltd Improvements in electrostatic precipitating plant
US2199390A (en) * 1937-11-23 1940-05-07 Int Precipitation Co Electrical precipitation
US2409957A (en) * 1944-09-15 1946-10-22 Reynolds Howard Signal flash
CA687858A (en) * 1964-06-02 M. Keesling Frank Discharge electrode for electrical precipitator
US3221475A (en) * 1962-04-12 1965-12-07 Metallgesellschaft Ag Wet electrostatic precipitator

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
US1252183A (en) * 1913-09-09 1918-01-01 Int Precipitation Co Apparatus for electrical separation of suspended particles from gases.
US1333790A (en) * 1915-06-28 1920-03-16 Research Corp Means for electrical treatment of gases
DE338416C (de) * 1918-01-24 1921-06-17 Siemens Schuckertwerke G M B H Verfahren und Einrichtung zum Reinigen von Gasen zwischen elektrisch geladenen Elektroden
GB413800A (en) * 1933-03-03 1934-07-26 Sturtevant Eng Co Ltd Improvements in electrostatic precipitating plant
US2199390A (en) * 1937-11-23 1940-05-07 Int Precipitation Co Electrical precipitation
US2409957A (en) * 1944-09-15 1946-10-22 Reynolds Howard Signal flash
US3221475A (en) * 1962-04-12 1965-12-07 Metallgesellschaft Ag Wet electrostatic precipitator

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3957462A (en) * 1974-06-07 1976-05-18 Metallgesellschaft Aktiengesellschaft Ionizing electrode coated with plastics material
US4134040A (en) * 1977-10-19 1979-01-09 Koppers Company, Inc. Adapter for wire electrode assembly of an electrostatic precipitator
US4362538A (en) * 1981-08-25 1982-12-07 Dresser Industries, Inc. Wet electrostatic precipitator having means for dampening the swaying of its discharge electrodes
US4533368A (en) * 1982-09-30 1985-08-06 Black & Decker, Inc. Apparatus for removing respirable aerosols from air
US4673417A (en) * 1984-11-05 1987-06-16 Flakt Ab Rigid discharge electrode
US4904283A (en) * 1987-11-24 1990-02-27 Government Of The United States As Represented By Administrator Environmental Protection Agency Enhanced fabric filtration through controlled electrostatically augmented dust deposition
US5125936A (en) * 1988-06-03 1992-06-30 Boliden Contech Ab Emission electrode
US5254155A (en) * 1992-04-27 1993-10-19 Mensi Fred E Wet electrostatic ionizing element and cooperating honeycomb passage ways
US5395420A (en) * 1993-11-30 1995-03-07 Centro Sviluppo Materiali S.P.A. Process for using foamed slag in stainless steel production
EP0659985A1 (fr) * 1993-12-16 1995-06-28 CENTRO SVILUPPO MATERIALI S.p.A. Dispositif de précipitation des particules de gas d'échappement
US5546747A (en) * 1993-12-16 1996-08-20 Centro Sviluppo Materiali S.P.A. Device for the precipitation of particulate in exhaust gases
EP0887108A1 (fr) * 1997-06-28 1998-12-30 Metallgesellschaft Aktiengesellschaft Electrode d'émission pour précipitateur électrostatique
US6508861B1 (en) 2001-10-26 2003-01-21 Croll Reynolds Clean Air Technologies, Inc. Integrated single-pass dual-field electrostatic precipitator and method
US20100058929A1 (en) * 2006-09-27 2010-03-11 Hitachi Plant Technologies, Ltd. Electric dust collector, discharge electrode, method for producing the discharge electrode, and method for producing discharge needle
CN104379263A (zh) * 2012-05-29 2015-02-25 丰田自动车株式会社 颗粒状物质处理装置
EP2857104A4 (fr) * 2012-05-29 2015-05-27 Toyota Motor Co Ltd Dispositif de traitement de matière particulaire

Also Published As

Publication number Publication date
FR1547889A (fr) 1968-11-29
DE1557150A1 (de) 1970-04-02
GB1146417A (en) 1969-03-26

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