US3844742A - Electrode cleaning mechanism for electrostatic dust precipitator - Google Patents

Electrode cleaning mechanism for electrostatic dust precipitator Download PDF

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Publication number
US3844742A
US3844742A US00333019A US33301973A US3844742A US 3844742 A US3844742 A US 3844742A US 00333019 A US00333019 A US 00333019A US 33301973 A US33301973 A US 33301973A US 3844742 A US3844742 A US 3844742A
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United States
Prior art keywords
rapping bar
hammer
electrode
cleaning mechanism
rapping
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Expired - Lifetime
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US00333019A
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English (en)
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H Petersen
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FLSmidth and Co AS
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FLSmidth and Co AS
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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
    • B03C3/74—Cleaning the electrodes
    • B03C3/76—Cleaning the electrodes by using a mechanical vibrator, e.g. rapping gear ; by using impact
    • B03C3/761—Drive-transmitting devices therefor, e.g. insulated shafts

Definitions

  • An electrode cleaning mechanism for electrostatic dust precipitators which has at least one eccentrically mounted electrode vibrated by a rapping mechanism which includes a tumbling hammer that is rotated about a horizontal shaft so that it continually swings down in a pivotal pendular movement until the impact surface of the hammer strikes against the end of a rapping bar which is thus sharply moved axially out of a rest position to jar the electrode.
  • the rapping bar is urged back to its rest position after jarring the electrode by the weight of the eccentrically mounted electrode which is connected to the rapping bar during this return movement.
  • This invention relates generally to electrostatic dust precipitators used for removing dust from gases as, for example, smoke gases generated in the production of cement.
  • Such precipitators are usually constructed with wire or band shaped discharging electrodes and plate-like collecting electrodes and the dust precipitated is commonly deposited on the collecting electrodes.
  • This invention relates to electrode cleaning mechanism for such precipitators.
  • the collecting electrodes are cleaned by shaking or vibration created by rapping or striking the collecting electrodes or their attachment irons.
  • the collecting electrodes are assembled in rows and the cleaning mechanism includes a common rapping bar for each row; the rows being vibrated as a result of tumbling hammers striking the rapping bars in a predetermined sequence.
  • This construction involves several drawbacks. First of all, the continuous rapping and vibration to which the mechanism is subjected produces very high mechanical stresses, particularly in the tumbling hammers and the rapping bars producing, consequently, heavy wear and a decrease in the life of the entire mechanism.
  • an electrostatic dust precipitator is provided which overcomes the drawbacks associated with known cleaners.
  • the electrode cleaning mechanism comprises a first support means for eccentrically mounting at least one electrode and a second support means for mounting a rapping bar for reciprocal axial movement between a rest position and second position spaced axially from the rest position.
  • the cleaning mechanism further includes means for connecting each electrode to the rapping bar for movement with the rapping bar.
  • the mechanism further includes a rotatable shaft and a tumbling hammer mounted on the shaft for rotational therewith. The tumbling hammer is also mounted on the shaft for free pendular pivotal movement relative thereto during an arcuate segment bringing it into relatively sharp contact with the end of the rapping bar.
  • the rapping bar is moved in a generally axial direction from the rest position to the second position thus imparting a jarring motion to eachelectrode; such jarring or vibration of the electrode acting to dislodge any dust particles deposited thereon during the precipitation operation.
  • the force imparted to the rapping LII bar by thehammer is directed through the axis of the rapping rod and the connection means between the electrode and the rapping bar are specially constructed such that the impact reaction between the rapping bar and the electrode is directed substantially along the axis of the rapping bar.
  • the distance between the point of impact with the rapping bar and the pivot axis of the hammer is substantially equal to the radius gyration of the hammer.
  • FIG. 1 is a perspective view of a cleaning mechanism constructed according to this invention.
  • FIG. 2 is a perspective view of an alternative embodiment of a cleaning mechanism constructed according to this invention.-
  • FIG. 3 is a perspective view of a portion of either embodiment showing a special mounting arrangement according to this invention.
  • each collecting electrode is movably and eccentrically suspended from a fixed support 4 by means of fittings 3 connected to its upper end.
  • two electrodes are suspended from support 4 and one rapping bar is common to both collecting electrodes.
  • each tubular rapping bar Attached to one end of each tubular rapping bar is a rounded anvil 8 which defines the impact surface for the respective rapping bar as will become clear as the description proceeds.
  • the cleaning mechanism further includes a tumbling hammer 9 for each rapping bar.
  • Each tumbling hammer has a substantially flat impact surface 9a and is pivotable about pin 10a extending through an arm 10 which is fixed to a rotatable shaft 11 by a releasable U-shaped clamping bow 12 secured with two nuts (not shown).
  • the shaft 11 rests in a series of stationary bearings 13, of which only'one is shown in the drawing for the sake of clarityQThe shaft 11 is driven by a motor and suitable gearing not shown in the drawing.
  • each rapping bar 2 is non-rigidly connected to the respective collecting electrode by a specially constructed connection means in such a manner that the reaction between the rapping bar and the electrode has its line of action substantially along the axis of the rapping bar.
  • this connection means includes a tongue 5 passing completely through a slot extending diametrically through the tubular rapping-bar and an impact member 7 fixed to the shaft within the slot.
  • the impact member has a round surface engaging tongue 5 at a point located on the axis of the respective rapping bar.
  • wedge-shaped plate sections 19 may be fixed to the rapping bar for the first and the last collecting electrodes of a row, as shown.
  • each rapping bar comprises a bolt 6 extending transversely through the end of tongue 5 which projects from the underside of the rapping bar rod.
  • the rapping bar rests on the bolt 6 as shown.
  • Each rapping bar is supported for axial movement between the rest position shown in the drawings and a second position axially spaced from the rest position in the direction extending from left to right as viewed in the drawings.
  • the electrodes 1 In the rest position the electrodes 1, as shown, are oriented substantially upright.
  • the electrodes In the second position, the electrodes are tilted slightly in the direction of arrow 22; this tilting being permitted by the relative loose connection between fittings 3 and support 4. Because of the eccentric mounting of the electrodes on support 4, its own weight will move each electrode back to the upright position, in turn, moving the respective rapping bar back to the rest position.
  • the flat impact surface 9a of the tumbling hammer lies in a plane perpendicular to the axis of the rapping bar at the moment of impact. Furthermore, in the constructions shown the center of round anvils (i.e., the point of impact) is located at a distance from the pivot axis of the tumbling hammer on the arm 10 at the moment of impact which is substantially-equal to the calculated radius of gyration of the tumbling hammer; the radius of gyration being calculated as (g[T/21r]) where T is the period of oscillation if the hammer were allowed to swing as a simple pendulum and g is the gravitational constant.
  • each rapping bar is struck centrally at its longitudinal axis by the corresponding tumbling ham mer.
  • Mechanical stress in the structure will consequently be as low as possible and at the same time the entire force of the impact is transmitted in the form of vibration to the collecting electrodes without being lost in deformations of other structural parts.
  • each tumbling hammer calculated from its center of rotation or pivot axis to its center or point of impact be substantially equal to the radius of gyration (i.e., to the length of an equivalent simple pendulum) since thereby there will normally be substantially no reaction from the impact on the tumbling hammer supporting structure.
  • the longitudinal axis of the rapping bar and the direction of impact generally coincide even if minor displacements occur in the relative positions of the tumbling hammer and the rapping bar in a plane perpendicular to the axis of the rapping bar, such displacements being due, for instance, to deformations of a housing or casing of the precipitator or differences in the heat expansion of the precipitator housing 20 and collecting electrodes.
  • each rapping bar 2 is supported independently of electrodes 1.
  • the support means for each rapping bar in this embodiment includes brackets 14 and 15.
  • the bracket 14 is provided with a stop element or bow 16 and the respective' rapping bar cooperates with a stop block 17 to ensure correct position of the rapping bar in a longitudinal direction.
  • block 17 is attached in spaced relation to the end of rapping bar 2 opposite its impact end with the bow 16 positioned in the space therebetween.
  • bracket 15 is attached to a support 18 which simultaneously serves to support the stationary bearings 13 through which the shaft 11 extends as previously described.
  • the rapping bar support means shown in FIG. 1 and the support means shown in FIG. 2 both permit reciprocal axial movement of the respective rapping bar in the direction of arrow 20 between a rest position and a second position axially spaced from the rest position.
  • the rapping bar With the support means shown in-FIG. 2 the rapping bar slidably engages brackets 14 and 15 to permit this axial movement.
  • Other support means for the rapping bars permitting the required axial movement such as various hinge or spring arrangements will be apparent to those skilled in the art.
  • the rapping bar support means shown in FIG. 2 has several advantages. First, the position of the support brackets will not be affected by any heat expansion of the electrodes 1 or their support means. Secondly, this mode of suspension allows the tumbling hammers and supporting structure such as shaft 11 and bearings 13 to be mounted on the rapping bar support means. In removing dust from hot kiln gases where the components of precipitator may be subjected to substantial heat expansion, this is advantageous because the relative positions of tumbling hammers and rapping bars is' essentially unaffected by structural changes due to misalignmentor heat expansion. Thus it is much easier to insure optimum spacing between the hammer pivot axis and the point of impact with the respective rapping bar as above described.
  • shaft 11 is rotated counter clockwise as indicated by arrows in the drawings.
  • the tumbling hammer imparts a knock to the corresponding rapping bar.
  • the tumbling hammer is lifted by the arm 10 and eventually assumes an equilibrium position resting on arm 10.
  • the tumbling hammer continues to occupy this position until equilibrium is destroyed or lost at which time the hammer falls in a free pendular movement down upon the anvil 8 on the end of the rapping bar thereby imparting another knock.
  • This intermittent knocking occurs throughout operation of the precipitator with each knock acting to jar dust deposits from the electrodes.
  • the tumbling hammer strikes the anvil at its center (i.e., at a point located on the center line or axis of the rapping bar) and the force created by the impact is transferred from the rapping bar via the rounded impact members 7 to the tongues 5 and, in turn, to the collecting electrodes along the axis of the rapping bar. Since the tumbling hammer strikes centrally and the energy from the impact is transmitted centrally via the rounded impact members maximum power will be utilized for vibration of the collecting electrodes. As a result no uneven impact forces will be experienced and the rapping mechanism will have a long lifetime.
  • the tumbling hammers, their suspension and their driving system may, according to this invention, be located outside the precipitator housing with the rapping bars projecting through the wall of the housing in sealed relationship thereto.
  • the electrodes may be mounted in a precipitator housing or casing which is supported on a structure 21.
  • the casing 20 has one or more bottom hoppers 22 for collecting the dust falling from the electrodes.
  • the hammers 9 and supporting structure are mounted outside the casing 20.
  • the rapping bars 8 extend into the casing through openings in the casing and are sealed by flexible membranes 23 as shown.
  • the cleaning mechanism constructions shown in the drawings act to clean collecting electrodes, it is also within the scope of this invention that the tumbling hammers and rapping bars can be utilized for rapping the support for the discharge electrodes or other mechanical devices associated with the discharge electrodes.
  • An electrostatic dust precipitator having at least one dust collecting electrode provided with a rapping mechanism for cleaning the electrode which comprises:
  • At least one tumbling hammer adjustably mounted on the rotatable shaft for rotation therewith and in a manner which provides free pendular pivotal movement relative to said shaft during rotation thereof through an arcuate segment of each revolution thereof, said hammer having a substantially flat impact surface spaced from the center of rotation and thedistance from the center of rotation to its point of impact with the anvil portion of the rapping bar is substantially equal to the radius of gyration of the hammer such that when the tumbling hammer strikes the anvil portion of the rapping bar the rapping bar is moved in a generally axial direction from the rest position to the second position to thereby impart a jarring motion to each electrode in a manner which facilitates repeated dislodgement of dust particles collected thereon.
  • the electrode cleaning mechanism according to claim 1 further comprising a second support means for mounting the shaft which mounts the tumbling hammer to support the shaft independently of said electrodes.
  • the tumbling hammer and the shaft are disposed externally of the precipitator housing with the rapping bar extending into the precipitator;
  • means are provided for sealing the rapping bar at its point of entry into the precipitator housing.
  • the impact surfaces of the hammer and rapping bar contact each other at a point located generally on the axis of the rapping bar;
  • the impact surface of the hammer is moving in a direction extending substantially parallel to the axis of the rapping bar at the moment of impact.
  • connection means includes:
  • an impact member fixed to the shaft within the slot at a position between the tongue and the impact end of the rapping bar, said impact member being disposed inengagement with the tongue at a point located generally on the axis of the rapping bar whereby the impact reaction between the rapping bar and the electrode is directed substantially along the axis of the rapping bar.
  • the electrode cleaning mechanism according to claim 9 further comprising a second support means for mounting the shaft which mounts the tumbling hammer to support the shaft'independently of said electrodes.
  • the second support means includes a pin extending through the tongue in underlying relationship to the rapping bar.
  • the impact end of the rapping bar has a rounded impact surface
  • the impact member has a rounded impact surface engaging the tongue
  • the impact surface of the hammer is substantially flat and lies in a plane oriented substantially perpendicular to the axis of the rapping bar at the moment of impact therebetween.
  • the second support means includes:
  • bracket means slidably mounting the rapping bar for said reciprocal axial movement
  • retaining means cooperatively engaging the rapping bar and bracket means for preventing axial movement of the rapping bar in a direction extending from the said second position to the said rest position beyond the said rest position.
  • said retaining means includes:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrostatic Separation (AREA)
US00333019A 1972-02-18 1973-02-16 Electrode cleaning mechanism for electrostatic dust precipitator Expired - Lifetime US3844742A (en)

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Application Number Priority Date Filing Date Title
GB771372 1972-02-18

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US (1) US3844742A (enrdf_load_stackoverflow)
JP (1) JPS4890070A (enrdf_load_stackoverflow)
BR (1) BR7301155D0 (enrdf_load_stackoverflow)
CA (1) CA986851A (enrdf_load_stackoverflow)
CH (1) CH545657A (enrdf_load_stackoverflow)
DE (1) DE2307960C2 (enrdf_load_stackoverflow)
ES (1) ES411703A1 (enrdf_load_stackoverflow)
FI (1) FI53539C (enrdf_load_stackoverflow)
FR (1) FR2172348B1 (enrdf_load_stackoverflow)
GB (1) GB1330612A (enrdf_load_stackoverflow)
IT (1) IT979146B (enrdf_load_stackoverflow)
SE (1) SE381409B (enrdf_load_stackoverflow)
SU (1) SU733506A3 (enrdf_load_stackoverflow)
ZA (1) ZA73820B (enrdf_load_stackoverflow)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059420A (en) * 1975-05-23 1977-11-22 Elex A.G. Bearings and rapping shaft in electrostatic precipitator
US4263022A (en) * 1978-09-12 1981-04-21 Apparatebau Rothemuhle Brandt & Kritzler Electrostatic precipitator with rappers for the corona electrodes
US4277258A (en) * 1977-12-09 1981-07-07 F. L. Smidth & Co. Electrostatic precipitator and discharge electrode therefor
US4356008A (en) * 1980-11-22 1982-10-26 Buckau-Walther Ag Knocking arrangement for electric precipitation
US4671808A (en) * 1984-11-05 1987-06-09 Flakt Ab Arrangement for supporting a plurality of discharge electrodes, and a discharge electrode suited to the arrangement
US4747856A (en) * 1987-08-21 1988-05-31 General Electric Environmental Services, Inc. Lower end alignment device for electrostatic precipitator collector electrodes
US4769049A (en) * 1987-04-14 1988-09-06 United Mcgill Corporation Side rapping drag hammer apparatus for electrostatic precipitators
US5051119A (en) * 1989-05-08 1991-09-24 Fls Miljo A/S Rapping mechanism for precipitator electrodes
US5366540A (en) * 1992-08-28 1994-11-22 Fls Miljo A/S Rapping mechanism for rapping the electrodes of an electrostatic precipitator
US5554210A (en) * 1994-01-11 1996-09-10 FLS Milj.o slashed. A/S Suspension device and a rapping mechanism for electrodes in an electrostatic precipitator
US5792240A (en) * 1993-12-23 1998-08-11 Fls Miljo A/S Device for cleaning electrodes in an electrostatic precipitator and an electrostatic precipitator utilizing such devices
US6336961B1 (en) * 1997-06-23 2002-01-08 Sumitomo Heavy Industries, Ltd. Electric precipitator and electric precipitation electrode used for the same
US20080041417A1 (en) * 2006-08-16 2008-02-21 Alstom Technology Ltd, A Company Of Switzerland Device and method for cleaning selective catalytic reduction protective devices
US20080202077A1 (en) * 2007-02-27 2008-08-28 Snyder Robert E Assembly for ash separation from flue gas
WO2009033480A1 (de) * 2007-09-14 2009-03-19 Salzgitter Mannesmann Gmbh Klopfeinrichtung für niederschlagselektroden in elektrofiltern
RU2399427C1 (ru) * 2009-06-23 2010-09-20 Закрытое акционерное общество "Финго инжиниринг" Электрофильтр
CN102896046A (zh) * 2012-11-07 2013-01-30 福建龙净环保股份有限公司 一种电除尘器悬臂梁结构阴极系统
US10883732B2 (en) * 2018-05-16 2021-01-05 Filt Air Ltd. Air-conditioning unit with ionizer having self-cleaning electrodes
CN115090417A (zh) * 2022-05-06 2022-09-23 华能国际电力江苏能源开发有限公司 一种电站电除尘电场高效振打装置

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JPS5542850Y2 (enrdf_load_stackoverflow) * 1977-05-23 1980-10-07
DE2834526C2 (de) * 1978-08-07 1984-08-23 Metallgesellschaft Ag, 6000 Frankfurt Fallhammer für Klopfeinrichtungen in Elektroabscheidern
JPS55102960U (enrdf_load_stackoverflow) * 1979-01-08 1980-07-18
GB2171337A (en) * 1985-02-22 1986-08-28 Smidth & Co As F L Rapping mechanism for an electrostatic precipitator
DE4112455A1 (de) * 1991-04-12 1992-10-15 Ver Energiewerke Ag Verfahren und anordnung zur staubaushaltung aus einem rauchgasstrom einer kohlenstaubfeuerung
RU2152260C1 (ru) * 1997-11-14 2000-07-10 Олексевич Игорь Валерьевич Способ регенерации многопольного электрофильтра, устройство для его осуществления, многопольный электрофильтр и аппарат гидрозолоудаления
DE102005045633B3 (de) * 2005-09-23 2007-05-16 Alstom Technology Ltd Fallhammer-Klopfvorrichtung

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BE564703A (enrdf_load_stackoverflow) *
DE469909C (de) * 1927-08-24 1928-12-28 Siemens Schuckertwerke Akt Ges Schuettelvorrichtung, insbesondere fuer die Elektroden elektrischer Gasreinigungsanlagen
DE505794C (de) * 1929-07-10 1930-08-27 Metallgesellschaft Ag Vorrichtung zum Abreinigen der Elektroden elektrischer Gasreiniger durch Erschuettern mittels eines Schlagwerkzeuges
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
GB721846A (en) * 1952-07-24 1955-01-12 Lodge Cottrell Ltd Improvements in or relating to apparatus for the electrical precipitation of suspended particles from gaseous fluids
US2812035A (en) * 1955-09-09 1957-11-05 Buell Engineering Company Inc Electrostatic precipitator and a collecting electrode therefor
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US2890081A (en) * 1957-11-25 1959-06-09 C E Rogers Company Air lock for a powder cooler
GB821752A (en) * 1957-06-27 1959-10-14 Lodge Cottrell Ltd Improvements in or relating to electrostatic precipitators
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US3109720A (en) * 1960-05-17 1963-11-05 Koppers Co Inc Electrostatic precipitation
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US3165388A (en) * 1960-10-20 1965-01-12 Svenska Flaektfabriken Ab Electrostatic precipitators
US3200565A (en) * 1961-07-12 1965-08-17 Svenska Flaektfabriken Ab Electrostatic precipitators
US3201923A (en) * 1960-01-30 1965-08-24 Svenska Flaektfabriken Ab Device for cleaning the collecting electrodes in electrostatic precipitators
US3219130A (en) * 1962-07-06 1965-11-23 Metallgesellschaft Ag Mechanism for rapping the collecting electrodes in electrostatic precipitators

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GB889525A (en) * 1960-01-30 1962-02-14 Svenska Flaektfabriken Ab Device for cleaning the collecting electrodes in electrostatic precipitators
FR1289249A (fr) * 1961-05-16 1962-03-30 Metallgesellschaft Ag Procédé de nettoyage des électrodes de précipitation en forme de plaques
GB978462A (en) * 1963-10-28 1964-12-23 Rolls Royce Gas turbine by-pass engine
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DE469909C (de) * 1927-08-24 1928-12-28 Siemens Schuckertwerke Akt Ges Schuettelvorrichtung, insbesondere fuer die Elektroden elektrischer Gasreinigungsanlagen
DE505794C (de) * 1929-07-10 1930-08-27 Metallgesellschaft Ag Vorrichtung zum Abreinigen der Elektroden elektrischer Gasreiniger durch Erschuettern mittels eines Schlagwerkzeuges
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
GB721846A (en) * 1952-07-24 1955-01-12 Lodge Cottrell Ltd Improvements in or relating to apparatus for the electrical precipitation of suspended particles from gaseous fluids
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
GB821752A (en) * 1957-06-27 1959-10-14 Lodge Cottrell Ltd Improvements in or relating to electrostatic precipitators
US2890081A (en) * 1957-11-25 1959-06-09 C E Rogers Company Air lock for a powder cooler
US3201923A (en) * 1960-01-30 1965-08-24 Svenska Flaektfabriken Ab Device for cleaning the collecting electrodes in electrostatic precipitators
US3109720A (en) * 1960-05-17 1963-11-05 Koppers Co Inc Electrostatic precipitation
US3081553A (en) * 1960-10-03 1963-03-19 Miller George Apparatus for cleaning feathers and the like
US3113852A (en) * 1960-10-06 1963-12-10 Metallgesellschaft Ag Cleaning means for channel-shaped dust collecting electrodes
US3165388A (en) * 1960-10-20 1965-01-12 Svenska Flaektfabriken Ab Electrostatic precipitators
US3200565A (en) * 1961-07-12 1965-08-17 Svenska Flaektfabriken Ab Electrostatic precipitators
US3219130A (en) * 1962-07-06 1965-11-23 Metallgesellschaft Ag Mechanism for rapping the collecting electrodes in electrostatic precipitators

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059420A (en) * 1975-05-23 1977-11-22 Elex A.G. Bearings and rapping shaft in electrostatic precipitator
US4277258A (en) * 1977-12-09 1981-07-07 F. L. Smidth & Co. Electrostatic precipitator and discharge electrode therefor
US4263022A (en) * 1978-09-12 1981-04-21 Apparatebau Rothemuhle Brandt & Kritzler Electrostatic precipitator with rappers for the corona electrodes
US4356008A (en) * 1980-11-22 1982-10-26 Buckau-Walther Ag Knocking arrangement for electric precipitation
US4671808A (en) * 1984-11-05 1987-06-09 Flakt Ab Arrangement for supporting a plurality of discharge electrodes, and a discharge electrode suited to the arrangement
US4769049A (en) * 1987-04-14 1988-09-06 United Mcgill Corporation Side rapping drag hammer apparatus for electrostatic precipitators
US4747856A (en) * 1987-08-21 1988-05-31 General Electric Environmental Services, Inc. Lower end alignment device for electrostatic precipitator collector electrodes
US5051119A (en) * 1989-05-08 1991-09-24 Fls Miljo A/S Rapping mechanism for precipitator electrodes
US5366540A (en) * 1992-08-28 1994-11-22 Fls Miljo A/S Rapping mechanism for rapping the electrodes of an electrostatic precipitator
US5792240A (en) * 1993-12-23 1998-08-11 Fls Miljo A/S Device for cleaning electrodes in an electrostatic precipitator and an electrostatic precipitator utilizing such devices
US5554210A (en) * 1994-01-11 1996-09-10 FLS Milj.o slashed. A/S Suspension device and a rapping mechanism for electrodes in an electrostatic precipitator
US6336961B1 (en) * 1997-06-23 2002-01-08 Sumitomo Heavy Industries, Ltd. Electric precipitator and electric precipitation electrode used for the same
US20080041417A1 (en) * 2006-08-16 2008-02-21 Alstom Technology Ltd, A Company Of Switzerland Device and method for cleaning selective catalytic reduction protective devices
US8052766B2 (en) * 2006-08-16 2011-11-08 Alstom Technology Ltd Device and method for cleaning selective catalytic reduction protective devices
US20080202077A1 (en) * 2007-02-27 2008-08-28 Snyder Robert E Assembly for ash separation from flue gas
US7615086B2 (en) * 2007-02-27 2009-11-10 Babcock & Wilcox Power Generation Group, Inc. Assembly for ash separation from flue gas
WO2009033480A1 (de) * 2007-09-14 2009-03-19 Salzgitter Mannesmann Gmbh Klopfeinrichtung für niederschlagselektroden in elektrofiltern
US20100319546A1 (en) * 2007-09-14 2010-12-23 Salzgitter Mannesmann Gmbh Rapping device for precipitation electrodes in electrostatic separators
AU2008298118B2 (en) * 2007-09-14 2012-04-19 Salzgitter Mannesmann Gmbh Rapping device for collector electrodes in electrostatic filters
RU2399427C1 (ru) * 2009-06-23 2010-09-20 Закрытое акционерное общество "Финго инжиниринг" Электрофильтр
CN102896046A (zh) * 2012-11-07 2013-01-30 福建龙净环保股份有限公司 一种电除尘器悬臂梁结构阴极系统
CN102896046B (zh) * 2012-11-07 2015-08-12 福建龙净环保股份有限公司 一种电除尘器悬臂梁结构阴极系统
US10883732B2 (en) * 2018-05-16 2021-01-05 Filt Air Ltd. Air-conditioning unit with ionizer having self-cleaning electrodes
CN115090417A (zh) * 2022-05-06 2022-09-23 华能国际电力江苏能源开发有限公司 一种电站电除尘电场高效振打装置

Also Published As

Publication number Publication date
FR2172348A1 (enrdf_load_stackoverflow) 1973-09-28
AU5221073A (en) 1974-08-15
SE381409B (sv) 1975-12-08
FR2172348B1 (enrdf_load_stackoverflow) 1976-11-05
FI53539B (enrdf_load_stackoverflow) 1978-02-28
ZA73820B (en) 1974-02-27
GB1330612A (en) 1973-09-19
IT979146B (it) 1974-09-30
SU733506A3 (ru) 1980-05-05
CH545657A (enrdf_load_stackoverflow) 1974-02-15
CA986851A (en) 1976-04-06
FI53539C (fi) 1978-06-12
DE2307960A1 (de) 1973-08-23
DE2307960C2 (de) 1984-03-08
JPS4890070A (enrdf_load_stackoverflow) 1973-11-24
BR7301155D0 (pt) 1973-09-27
ES411703A1 (es) 1976-01-01

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