US3201923A - Device for cleaning the collecting electrodes in electrostatic precipitators - Google Patents

Device for cleaning the collecting electrodes in electrostatic precipitators Download PDF

Info

Publication number
US3201923A
US3201923A US63874A US6387460A US3201923A US 3201923 A US3201923 A US 3201923A US 63874 A US63874 A US 63874A US 6387460 A US6387460 A US 6387460A US 3201923 A US3201923 A US 3201923A
Authority
US
United States
Prior art keywords
electrodes
gas flow
impact bar
rail
bar
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
US63874A
Other languages
English (en)
Inventor
Gustafsson Stig
Mildh Gosta
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.)
Svenska Flaktfabriken AB
Original Assignee
Svenska Flaktfabriken AB
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 Svenska Flaktfabriken AB filed Critical Svenska Flaktfabriken AB
Application granted granted Critical
Publication of US3201923A publication Critical patent/US3201923A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/74—Cleaning the electrodes
    • B03C3/76—Cleaning the electrodes by using a mechanical vibrator, e.g. rapping gear ; by using impact

Definitions

  • the present invention relates to a device for cleaning electrostatic precipitators in which the collecting electrodes are in the form of a plurality of side-by-side rows of preferably plate-shaped electrode elements parallel to the direction of gas flow. The electrode elements in each row are pivotally suspended in tandem relationship.
  • the device includes impact bars disposed beneath the electrodes and carried by the same, and which are arranged to be actuated by hammers mounted on a rotatable shaft extending transversely to the direction of gas flow to thereby impart to the electrode elements an oscillatory movement in the direction of the gas flow.
  • upstanding U-shaped guide brackets have been mounted on laterally-extending rails rigidly secured at their opposite ends to the walls of the electrofilter to provide guiding units for guiding the impact bars against lateral movement.
  • a diiference in thermal expansion has occurred which has caused bending or displacement of the guiding units. Therefore, in conjunction with mounting the guide rails in the walls, it has been necessary to dispose the rails so as to provide ample clearance between the bottom edge of the impact bars and the top edge of the guide rails to thereby alford sufficient freedom for thermal expansion of the collecting electrodes.
  • the impact bars are guided against lateral movement by U-shaped guide brackets mounted on laterally-extending rails which are disposed at the ends of the electrode rows and are secured to, and carried by, the two outermost impact bars.
  • baffle plates depending from the laterally-extending rails to prevent any substantial amount of gas from flowing longitudinally in the space beneath the electrodes.
  • FIG. 1 is a fragmentary longitudinal vertical section with portions broken away through an electrostatic precipitator embodying a cleaning device in accordance with the present invention
  • FIG. 2 is a fragmentary transverse vertical section with portions broken away taken along the line 2-2 of FIG. 1;
  • FIG. 3 is a fragmentary perspective view showing two impact bars and their associated collecting electrodes (one being removed) and the intermediate emission electrodes;
  • FIG. 4 is a view in side elevation with portions broken away of an electrostatic precipitator embodying the present invention.
  • the electrostatic precipitator 1 comprises a casing 2 having an inlet 2a and and outlet 2b.
  • a casing 2 having an inlet 2a and and outlet 2b.
  • the electrodes 3 are mounted for swinging movement as indicated at 3a in a suspension mounting 3b adjacent the top wall of the casing 2.
  • a suspension mounting 3b adjacent the top wall of the casing 2.
  • longitudinal rows of discharge electrodes 16 in the present instance in the form of rods (see FIGS. 2 and 3).
  • the electrostatic precipitator includes a cleaning device which consists of a number of impact bars 4 arranged to be engaged by hammers 6 mounted on a rotary shaft 5 extending transversely across the casing.
  • the shaft 5 is mounted in journals 5a supported on standards 5b projecting inwardly from the wall of the casing 2.
  • the shaft 5 is rotated by a sprocket 14 adapted to receive a chain from a drive' motor (not shown).
  • the impact bars 4 are provided with a plurality of studs 7 along their length adapted to engage against lugs 25 depending from the electrodes 3.
  • the impact bars 4 and the electrodes 3 are guided against lateral movement by U-shaped guide brackets 10 which in the present instance, comprise a pair of upstanding legs 10a mounted on laterally-extending tubular rails 11.
  • the rails 11 are disposed at the ends of the rows of electrodes and are secured to the two outermost impact bars, for example by angles lla, so that the outermost bars 4 serve as the sole support for the rail 11.
  • the laterally-extending rails 11 are provided with depending baffie plates 12 which prevent any substantial amount of gas introduced into the electrostatic precipitator to be purified from flowing longitudinally Within the space beneath the electrodes.
  • the laterally-extending rails 11 are preferably divided into a plurality of flexibly interconnected rail sections, each section being carried by the impact bars.
  • a joint and spacing member 13 is provided to interconnect two adjacent rail sections, 538 shown in FIG. 2.
  • An electrostatic precipitator comprising:
  • plate-shaped collecting electrodes disposed parallel to and arranged. intranswhich are, parallel an elongatedimpact bar underlying eachrow of electrodes and coextensive therewith;
  • each'impact bar' operable upon'actuation thereof to engage and dis-. place said bar longitudinally in the direction of gas flow through said precipitator

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrostatic Separation (AREA)
US63874A 1960-01-30 1960-10-20 Device for cleaning the collecting electrodes in electrostatic precipitators Expired - Lifetime US3201923A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE93560 1960-01-30

Publications (1)

Publication Number Publication Date
US3201923A true US3201923A (en) 1965-08-24

Family

ID=20257333

Family Applications (1)

Application Number Title Priority Date Filing Date
US63874A Expired - Lifetime US3201923A (en) 1960-01-30 1960-10-20 Device for cleaning the collecting electrodes in electrostatic precipitators

Country Status (2)

Country Link
US (1) US3201923A (fr)
BE (1) BE596864A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2307960A1 (de) * 1972-02-18 1973-08-23 Smidth & Co As F L Elektrostatischer staubabscheider
US3759014A (en) * 1971-05-12 1973-09-18 Kennecott Copper Corp Method and apparatus for dislodging accumulated dust from dust collecting elements
US3951624A (en) * 1974-11-22 1976-04-20 Koppers Company, Inc. Electrostatic precipitator
US4218225A (en) * 1974-05-20 1980-08-19 Apparatebau Rothemuhle Brandt & Kritzler Electrostatic precipitators

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE514873A (fr) *
FR509898A (fr) * 1920-02-12 1920-11-22 Int Precipitation Co Perfectionnements dans les appareils pour la précipitation par l'électricité de particules en suspension dans des gaz
DE373773C (de) * 1918-10-11 1923-04-16 Siemens Schuckertwerke G M B H Verfahren zur Reinigung der Elektroden von elektrischen Reinigungsanlagen
DE450391C (de) * 1925-08-28 1927-10-07 Metallbank & Metallurg Ges Ag Elektrodenanordnung fuer elektrische Gasreiniger
US1882949A (en) * 1930-11-15 1932-10-18 Int Precipitation Co Electrical precipitation apparatus
GB437626A (en) * 1934-11-16 1935-11-01 Siemens Lurgi Cottrell Elektro Improvements in or relating to apparatus for the electrical precipitation of suspended particles from gases
US2595204A (en) * 1949-11-25 1952-04-29 Research Corp Electrical precipitation
US2703630A (en) * 1952-07-31 1955-03-08 Research Corp Gas distribution device
US2812035A (en) * 1955-09-09 1957-11-05 Buell Engineering Company Inc Electrostatic precipitator and a collecting electrode therefor
GB790130A (en) * 1955-05-18 1958-02-05 Carves Simon Ltd Improvements relating to electrostatic precipitators
US2864459A (en) * 1955-10-24 1958-12-16 Svenska Flaektfabriken Ab Rapping system for electrofilters

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE514873A (fr) *
DE373773C (de) * 1918-10-11 1923-04-16 Siemens Schuckertwerke G M B H Verfahren zur Reinigung der Elektroden von elektrischen Reinigungsanlagen
FR509898A (fr) * 1920-02-12 1920-11-22 Int Precipitation Co Perfectionnements dans les appareils pour la précipitation par l'électricité de particules en suspension dans des gaz
DE450391C (de) * 1925-08-28 1927-10-07 Metallbank & Metallurg Ges Ag Elektrodenanordnung fuer elektrische Gasreiniger
US1882949A (en) * 1930-11-15 1932-10-18 Int Precipitation Co Electrical precipitation apparatus
GB437626A (en) * 1934-11-16 1935-11-01 Siemens Lurgi Cottrell Elektro Improvements in or relating to apparatus for the electrical precipitation of suspended particles from gases
US2595204A (en) * 1949-11-25 1952-04-29 Research Corp Electrical precipitation
US2703630A (en) * 1952-07-31 1955-03-08 Research Corp Gas distribution device
GB790130A (en) * 1955-05-18 1958-02-05 Carves Simon Ltd Improvements relating to electrostatic precipitators
US2812035A (en) * 1955-09-09 1957-11-05 Buell Engineering Company Inc Electrostatic precipitator and a collecting electrode therefor
US2864459A (en) * 1955-10-24 1958-12-16 Svenska Flaektfabriken Ab Rapping system for electrofilters

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3759014A (en) * 1971-05-12 1973-09-18 Kennecott Copper Corp Method and apparatus for dislodging accumulated dust from dust collecting elements
DE2307960A1 (de) * 1972-02-18 1973-08-23 Smidth & Co As F L Elektrostatischer staubabscheider
US3844742A (en) * 1972-02-18 1974-10-29 Smidth & Co As F L Electrode cleaning mechanism for electrostatic dust precipitator
US4218225A (en) * 1974-05-20 1980-08-19 Apparatebau Rothemuhle Brandt & Kritzler Electrostatic precipitators
US3951624A (en) * 1974-11-22 1976-04-20 Koppers Company, Inc. Electrostatic precipitator

Also Published As

Publication number Publication date
BE596864A (fr) 1961-03-01

Similar Documents

Publication Publication Date Title
US4502872A (en) Discharge electrode wire assembly for electrostatic precipitator
US1882949A (en) Electrical precipitation apparatus
RU2143327C1 (ru) Электростатический осадитель
DK2471602T3 (en) Electrical shielding device for structures near high voltage parts of electrostatic precipitators
US4521229A (en) Tubular discharge electrode for electrostatic precipitator
US3201923A (en) Device for cleaning the collecting electrodes in electrostatic precipitators
CA2862754C (fr) Frappe d'un precipitateur electrostatique
US2812035A (en) Electrostatic precipitator and a collecting electrode therefor
US1600496A (en) Apparatus for electrical precipitation of suspended material from gases
US3354617A (en) Corona shield for ionizer wires
US3158453A (en) Emission electrode system
US2271597A (en) Apparatus for electrical precipitation
PL171595B1 (pl) Mechanizm udarowy do wstrzasania elektrod filtru elektrostatycznego PL
US2595204A (en) Electrical precipitation
US3483669A (en) Dust dislodging system for electrostatic precipitators
US2694464A (en) Electrical precipitator
US2999561A (en) Electrical precipitator apparatus
US2625238A (en) Apparatus for electrical precipitation
US4747856A (en) Lower end alignment device for electrostatic precipitator collector electrodes
RU193625U1 (ru) Горизонтальный многопольный электрофильтр
US2420941A (en) Combined picking table and screen of the drag-conveyor type
US3114615A (en) Oscillating shearing device for the removal of precipitated dry dust
US1903640A (en) Electrical precipitator
US2964125A (en) Electrical precipitator
US4332597A (en) Plate electrode arrangement for an electrostatic precipitator