US3891414A - Drag scraper assembly for electrostatic precipitator - Google Patents

Drag scraper assembly for electrostatic precipitator Download PDF

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Publication number
US3891414A
US3891414A US513419A US51341974A US3891414A US 3891414 A US3891414 A US 3891414A US 513419 A US513419 A US 513419A US 51341974 A US51341974 A US 51341974A US 3891414 A US3891414 A US 3891414A
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US
United States
Prior art keywords
scraper
precipitator
gas
baffle
flow
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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
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US513419A
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English (en)
Inventor
Earle Stuart Snader
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.)
Beazer East Inc
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Koppers Co Inc
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Filing date
Publication date
Application filed by Koppers Co Inc filed Critical Koppers Co Inc
Priority to US513419A priority Critical patent/US3891414A/en
Application granted granted Critical
Publication of US3891414A publication Critical patent/US3891414A/en
Priority to SE7511115A priority patent/SE397773B/xx
Priority to DE2544698A priority patent/DE2544698C3/de
Priority to CA237,295A priority patent/CA1045563A/fr
Priority to GB41329/75A priority patent/GB1487297A/en
Priority to FR7530855A priority patent/FR2287274A1/fr
Priority to IT51711/75A priority patent/IT1047744B/it
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/88—Cleaning-out collected particles

Definitions

  • a drag scraper is secured to the chain belt traverse to the flow of the gas for pushing particles collected on the surface toward a collection hopper for the particles.
  • a baffle assembly extends between the lower portions of adjacent collector electrodes of the precipitator and the particle collection surface for obstruct ing the flow of gas between the lower portions of the collector electrodes and the collection surface.
  • the baffle assembly includes a first portion which is pivotable by the drag scraper advancing with the top flight to permit passage of the drag scraper through the baffle assembly.
  • the baffle assembly further includes a second portion which is pivotable by the drag scraper advancing with the lower flight to permit passage of the drag scraper and the particles through the baffle assembly.
  • the improvement comprises a platform beneath the first portion of each of the baffle assemblies for preventing the flow of gas between the first portions and fixed portions of the baffle assembly during pivotable movement of the first portion as the drag scraper passes through the baffle assembly.
  • This invention relates generally to gas separation by electrostatic precipitators and more particularly to an improved drag scraper assembly in electrostatic precipitators for removing particles from a collection surface on the bottom of the precipitator.
  • the particles which collect on the collector electrodes are then removed in any conventional manner such as by rapping the collector electrodes causing the particles to be dislodged from the plates and fall to the bottom of the precipitator.
  • the bottom of the precipitator contains a number of hopper bins into which the dust particles fall and are collected and then removed through the bottom of the hopper to the outside of the precipitator.
  • hoppers at the bottom of the precipitator In many situations. it is undesirable to use hoppers at the bottom of the precipitator for removal of dust particles. In many industrial areas, the space in which a precipitator can be constructed is limited and the hopper concept for removal of the particles may not be practical. In such situations, the hoppers are replaced by a horizontal floor or collection surface in the bottom of the precipitator. The particles from the collecting plates fall to the floor and are collected thereon.
  • the preferred manner of removing the particles from the collecting surface on the bottom of the precipitator is to employ an endless chain and scraper system just above the collection surface. The endless chain has a plurality of spaced scrapers secured thereon which run transverse to the flow of gas through the precipitator.
  • the scraper blades contact the dust in the bottom of the precipitator and push the dust particles to one end of the precipitator where the dust can be collected in a single short hopper or pushed onto a removal conveyor means, or removed in any other convenient manner.
  • baffle systems are suspended between the adjacent collector electrodes and collection surface of the precipitator.
  • These baffle systems have a plurality of pivotable or flexible baffles so that when the endless chain revolves and the scrapers contact the pivotable baffles, the baffles will flex or pivot and allow the scraper to pass thereunder.
  • an object of the present invention is to provide an electrostatic precipitator with a particle removal system that will overcome the aforementioned disadvantages and others; thus, this invention provides an electrostatic precipitator with an improved drag scraper assembly which includes an improved baffle system for increasing the collection efficiency of an electrostatic precipitator to substantially 98.8%.
  • an electrostatic precipitator with an improved drag scraper assembly which includes an endless chain means above a particle collection surface of the precipitator having a top flight advancing in the direction of gas flow through the precipitator and a bottom flight advancing in a direction opposite to the gas flow; scraper means secured to the chain means traverse to the flow of the gas for pushing particles collected on the surface toward a collection hopper for the particles; and baffle means extending between lower portions of adjacent collector electrodes of the precipitator and the particle collection surface for obstructing the flow of gas between the lower portions and the collection surface, a first portion of the baffle means being pivotable by the scraper means advancing with the top flight to permit passage of the scraper means through the baffle means, and a second portion of the baffle means being pivotable by the scraper means advancing with the lower flight to permit passage of the scraper means and the particles through the baffle means, the improvement comprising: a plate means beneath the first portion of each baffle means for preventing the flow of gas between the first portions and fixed portions of the
  • FIG. 2 is a schematic end view of the improved drag scraper assembly of FIG. 1 taken along the lines II-II showing the endless chains, scraper, and fixed and pivotable baffles;
  • FIG. 3 is an enlarged view of the drag scraper assembly of FIG. 1 showing the endless chain and scraper assembly and the baffle assembly.
  • the invention generally comprises of an improved drag scraper assembly, denoted generally by numeral 12, for use in electrostatic precipitators, denoted generally by numeral 10, having an endless chain 14 above a particle collection surface 16 of precipitator I and having a top flight 18 advancing in the direction of gas flow, as shown by the arrow in FIG. I, through precipitator l0 and having a bottom flight 20 advancing in the direction opposite to the gas flow, as shown by the arrow in FIG. 1.
  • a scraper 22 is secured to endless chain 14 traverse to the flow of the gas for pushing particles 24 collected on collection surface 16 toward a collection hopper 26 for disposal of particles 24.
  • a baffle assembly extends between lower portions 29 of adjacent collector electrodes 30 of precipitator l0 and the particles collection surface 16 for obstructing the flow of gas between the lower portions 29 of collector electrodes 30 and the collecting surface 16.
  • the baffle assembly 28 includes a first portion, denoted generally by numeral 32, which is pivotable by scraper 22 which advances with top flight 18 to permit passage of scraper 22 through baffle assembly 28.
  • Baffle assembly 28 further includes a second portion denoted generally by numeral 34 which is pivotable by scrapper 22 which advances with lower flight 20 to permit passage of scraper 22 and particles 24 through baffle assembly 28.
  • the improvement comprises a plate assembly, denoted generally by numeral 36, beneath first portion 32 of each of the baffle assemblies 28 for preventing the flow of gas between first portion 32 and a first fixed portion 38 and a second fixed portion 40 of baffle assembly 28 during pivotable movement of first portion 32.
  • discharge electrodes 48 are energized which cause particles 24 in the particle laden gas to be ionized. These ionized particles 24 are then attracted to and collect on the surface of collector electrodes 30. After a predetermined length of time a certain amount of particles 24 from the particle laden gas are collected on collector electrodes 30. The collector electrodes 30 are then rapped in the conventional manner to dislodge particles 24 from the collector electrodes. The particles 24 fall to the bottom of precipitator 10 where they are collected on collection surface 16.
  • Drag scraper assembly 12 consists of a plurality of endless chain systems 14 (see FIG. 2) spaced traversely to the gas flow; each endless chain system 14 is spaced between lower portion 29 of collector electrodes 30 and collection surface 16.
  • Each endless chain system I4 includes a pair of aligned sprockets 52 (FIG. 1) positioned at each end of precipitator 10.
  • each endless chain system 14 The traversely spaced sprockets 52 of each endless chain system 14 are connected by a shaft 54 which extends the width of precipitator l0 traverse to the gas flow.
  • the ends of shafts 54 are supported in conventional bearing mounted supports (not shown) secured to the shell of precipitator l0. Shafts 54 are free to rotate within the bearing mounted supports.
  • Surrounding and connecting each of the aligned sprockets 52 is an endless chain 17 as shown in FIGS. 1 and 3.
  • Endless chain 17 has a top flight 18 which travels in the same direction as the gas flow and a bottom flight 20 which travels counter to the direction of gas flow.
  • An end of one of the shafts 54 is connected to an electric motor (not shown) for rotating shaft 54 and consequently sprockets 52 and endless chain 17, in the direction and at the speed desired.
  • Endless chain 17 has a plurality of circumferentially spaced scrapers 22, as shown in FIGS. 1, 2 and 3, which are attached to the endless chain 17 in any conventional manner and extend traversely to the gas flow as shown in FIG. 2.
  • Scrapers 22 may be a single scraper extending the entire width of precipitator 10 but preferably comprises a plurality of scraper segments 22 traversely aligned as shown in FIG. 2.
  • scrapers 22 are also rotated by endless chain 17.
  • scrapers 22 on bottom flight 20 traverse the length of precipitator counter to the direction of the gas flow, scrapers 22 push particles 24 along surface 16 of the bottom of precipitator 10 towards hopper 26.
  • Scrapers 22 continue to push particles 24 until they fall into hopper 26 where they are disposed of in the conventional manner outside the precipitator system.
  • baffle assemblies 28 which run transversely to the gas flow and obstruct the gas from flowing along collection surface 16 of precipitator 10 to prevent the particle laden gas from flowing out of precipitator 10 without being cleaned by discharge electrodes 48 and collector electrodes 30.
  • the baffle assemblies 28 are designed to force the particle laden gas upward and into the gas passages between collector electrodes 30 so that the particle laden gas can be cleaned prior to exiting from precipitator 10.
  • a plurality of plates 58 are secured to a side of support beam 56 such as by welding as shown in FIG. 3.
  • a chain link 60 is preferably used as a hinge for allowing first portion 32 to pivot.
  • Chain link 60 is preferred as the hinge because it provides a pivot and is not adversely affected by the hot, corrosive, and dusty atmosphere within precipitator l0; conventional hinges tend to bind up within a short time after being exposed to such atmosphere.
  • Chain link 60 is hung from plate 58 through a hole 59 and supports pivotable baffle 64 through hole 61 in the baffle.
  • Upper baffle plate 64 spans the width of precipitator l0 transverse to the direction of gas flow.
  • upper baffle plate 64 is made in sections as shown in FIG. 2.
  • upper baffle plate 64 may be made as one piece and extend the entire width of precipitator 10. Preferably upper baffle plate 64 should extend downward to a point just above endless chain 17 to make as small a gap as possible between them to restrict the flow of gas therethrough. In addition, this will allow upper baffle plate 64 to freely pivot without contacting endless chain 17.
  • Plate assembly 36 includes a second fixed portion 40, preferably an I-beam as shown in FIG. 3, and is spaced between top flight l8 and bottom flight of endless chain 17.
  • Second fixed portion 40 is secured at each end of sides 42 and 44 (FIG. 2) of precipitator 10 such as by welding.
  • a chain guide channel 68 (FIG. 3) is positioned on top of fixed portions 40 and extends substantially between aligned sprockets 52 in vertical alignment with top flight 18.
  • Chain guide channel 68 slidably supports top flight 18 of endless chain 17 as it traverses the length of precipitator 10 in the direction of gas flow.
  • Chain guide channel 68 prevents top flight 18 of endless chain 17 from flexing up and down as it travels the length of precipitator 10.
  • Plate assembly 36 further includes a platform plate 66 which substantially extends across the width of precipitator l0 transverse to the direction of gas flow.
  • Platform 66 is secured to the top of second fixed portion 40 such as by welding.
  • Platform 66 extends in height substantially the same as the top of top flight 18 of endless chain 17, and is notched to receive chain guide channel 68 through which endless chain 17 passes.
  • the top of platform 66 is in lateral alignment with the top of top flight 18 to provide a smooth sliding surface for scraper 22 to slide against when it travels the length of precipitator 10 in the direction of gas flow.
  • Platform 66 extends downstream from second fixed portion 40 a distance needed so that the downstream edge 46 of platform 66 is beyond the disengagement point where scraper 22 no longer contacts upper baffle plate 64 when it passes thereunder.
  • scraper 22 will contact and pivot baffle 64 upward. As scraper 22 pivots baffle plate 64 upward, scraper 22 will be in sliding engagement with the top of platform 66. When scraper 22 travels downstream and passes beyond upper baffle plate 64, it will still be in sliding engagement with platform 66. As scraper 22 clears upper baffle plate 64, and baffle plate 64 pivots downward, scraper 22 passes the downstream edge of platform 66 and is disengaged from platform 66.
  • the lower second baffle portion 34 includes an angle bracket 70 which is secured to the lower edge of second fixed portion 40 such as by welding.
  • a second chain link 60 supports baffle plate 72 from bracket 70 in the same manner as described for baffle plate 64.
  • a plurality of traversely spaced lower baffle segments 72 must be used rather than a single baffle traversing the width of precipitator 10 since baffles 72 must extend below lower flight 20 of endless chain 17.
  • baffles 72 there will be a slight gap between lower baffles 72 to allow lower flight 20 of endless chain 17 to pass therethrough. This allows baffles 72 to hang down below bottom flight 20 of endless chain 17 so that the lower end of lower baffles 72 extend to a point just above collecting surface 16 as shown in FIG. 1.
  • a particle laden gas enters precipitator 10 through an inlet port (not shown).
  • the particle laden gas flows through the gas passages (not shown) between collector electrodes 30.
  • the discharge electrodes 48 are energized causing particles 24 within the gas to be ionized.
  • Particles 24 are attracted to and collect on collector electrodes 30.
  • Collector electrodes 30 are rapped in the conventional manner to dislodge particles 24 therefrom which fall to collection surface 16 at the bottom of precipitator 10.
  • the particle laden gas which is flowing through precipitator 10 will also flow along the bottom of precipitator 10 below lower portion 29 of collector electrodes 30.
  • scraper 22 As scraper 22 contacts platform 66, it also contacts upper baffle plate 64. Since upper baffle plate 64 is connected to chain link 60, scraper 22 will pivot upper baffle plate 64 upward as scraper 22 continues to move in the direction of the gas flow. As long as scraper 22 is in contact with upper baffle plate 64, it remains in sliding engagement with platform 66 thereby preventing any particle laden gas from escaping between scraper 22 and platform 66 thus maintaining a gas seal while upper baffle plate 64 is pivoted. As scraper 22 continues to travel in the direction of the gas flow, it will release upper baffle plate 64 and allow it to pivot downward so that it is again slightly above platform 66. Scraper 22 then passes beyond the downstream edge 46 of platform 66 and continues to travel in the direction of the gas flow.
  • scraper 22 As scraper 22 passes around sprocket 52, it will continue its travel along bottom flight 20 of endless chain 17 counter to the direction of gas flow. As scraper 22 travels counter to the direction of gas flow, it contacts and pushes particles 24 in the direction of hopper 26 as shown in FIGS. 1 and 3. As scraper 22 continues to travel along bottom flight 20, it will also contact lower baffle plate 72 and pivot it upward so that scraper 22 may pass thereunder. Since scraper 22 is traveling counter to the direction of gas flow, a good gas seal will be maintained between the second fixed portion 40 and the bottom surface 16. As scraper 22 continues to travel. it will pass from under lower baffle plate 72 and allow lower baffle plate 72 to pivot downward so that it returns to a position slightly above collection surface 16. Scraper 22 continues to push particles 24 counter to the direction of gas flow until the particles 24 fall into hopper 26 where they are disposed of outside the precipitator system. Scraper 22 then passes upward around sprocket 52 and starts its travel over again on top flight 18 of endless chain 17.
  • the foregoing has presented a novel drag scraper assembly for use in electrostatic precipitators.
  • the problem of a particle laden gas passing beneath the collector electrodes along the length of the precipitator and out to a gas stack without being sufi'iciently cleaned has been substantially eliminated by providing a baffle system which will substantially prevent the particle laden gas from flowing the length of the precipitator outside the influence of the collector electrodes by deflecting the particle laden gas upward and into the gas passages between the collector electrodes where the cleaning process takes place.
  • An improved drag scraper assembly for electrostatic precipitators of the type including:
  • endless chain means above a particle collection surface of said precipitator having a top flight advancing in the direction of gas flow through said precipitator and a bottom flight advancing in a direction opposite to said gas flow;
  • scraper means secured to said chain means transverse to the flow of said gas for pushing particles collected on said surface toward a collection hopper for said particles;
  • baffle means extending between lower portions of adjacent collector electrodes of said precipitator and said particle collection surface for obstructing the flow of gas between said lower portions and said collection surface
  • baffle means a first portion of said baffle means being pivotable by said scraper means advancing with said top flight to permit passage of said scraper means through said baffle means
  • baffle means a second portion of said baffle means being pivotable by said scraper means advancing with said lower flight to permit passage of said scraper means and said particles through said baffle means

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  • Electrostatic Separation (AREA)
US513419A 1974-10-09 1974-10-09 Drag scraper assembly for electrostatic precipitator Expired - Lifetime US3891414A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US513419A US3891414A (en) 1974-10-09 1974-10-09 Drag scraper assembly for electrostatic precipitator
SE7511115A SE397773B (sv) 1974-10-09 1975-10-03 Slepskrapeanordning for elektrostatiska stoftavskiljare
DE2544698A DE2544698C3 (de) 1974-10-09 1975-10-06 Abstreichanordnung für Staubteilchen eines Elektroabscheider
CA237,295A CA1045563A (fr) 1974-10-09 1975-10-08 Trainard de raclage pour precipitateur electrostatique
GB41329/75A GB1487297A (en) 1974-10-09 1975-10-08 Electrostatic precipitators
FR7530855A FR2287274A1 (fr) 1974-10-09 1975-10-08 Dispositif de raclage pour depoussiereur electrostatique
IT51711/75A IT1047744B (it) 1974-10-09 1975-10-09 Gruppo raschiatore rastrellatore per precipitatori elettrostatici

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Application Number Priority Date Filing Date Title
US513419A US3891414A (en) 1974-10-09 1974-10-09 Drag scraper assembly for electrostatic precipitator

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US3891414A true US3891414A (en) 1975-06-24

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US513419A Expired - Lifetime US3891414A (en) 1974-10-09 1974-10-09 Drag scraper assembly for electrostatic precipitator

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US (1) US3891414A (fr)
CA (1) CA1045563A (fr)
DE (1) DE2544698C3 (fr)
FR (1) FR2287274A1 (fr)
GB (1) GB1487297A (fr)
IT (1) IT1047744B (fr)
SE (1) SE397773B (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026683A (en) * 1975-11-20 1977-05-31 Environmental Elements Corporation Inlet duct and hopper apparatus for electrostatic precipitators
WO1984001309A1 (fr) * 1982-10-01 1984-04-12 Donaldson Co Inc Collecteur de poussiere auto-nettoyant
US4913085A (en) * 1985-01-01 1990-04-03 Esb Elektorstatische Spruh-Und Beschichtungsanlagen G.F. Vohringer Gmbh Coating booth for applying a coating powder to the surface of workpieces
US4968330A (en) * 1989-09-01 1990-11-06 Fmc Corporation Apparatus for separating particulates in an electrostatic precipitator
US5695596A (en) * 1996-05-07 1997-12-09 Seguin; Jacques Apparatus for laying up veneer panels
WO2010129024A3 (fr) * 2009-04-28 2011-02-24 Cambridge International, Inc. Dépoussiéreur électrostatique et courroie de collecte d'autonettoyage pour celui-ci
CN107051748A (zh) * 2017-04-27 2017-08-18 铜陵有色兴铜机电制造有限公司 一种用于金属熔炼环节的双层清灰器
US20200353480A1 (en) * 2019-05-09 2020-11-12 Doosan Heavy Industries & Construction Co., Ltd. Electrostatic precipitator apparatus
US20200368760A1 (en) * 2019-05-20 2020-11-26 Doosan Heavy Industries & Construction Co., Ltd. Dust collecting tower apparatus
US20200368757A1 (en) * 2019-05-22 2020-11-26 Doosan Heavy Industries & Construction Co., Ltd. Horizontal electrostatic precipitator and electrostatic precipitation method using the same
GB2609216A (en) * 2021-07-22 2023-02-01 Edwards Ltd Electrostatic precipitator cleaning

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US739733A (en) * 1903-03-14 1903-09-22 Robert Sobotka Cotton-separator.
US823463A (en) * 1904-11-15 1906-06-12 Dennis Deneen Gravity dust-collector.
US1157947A (en) * 1911-04-29 1915-10-26 Merrell Soule Co Collecting apparatus for finely-divided solids.
US1385723A (en) * 1919-08-15 1921-07-26 John J Glasheen Smelting minerals
US1481970A (en) * 1921-02-26 1924-01-29 Int Precipitation Co Apparatus for electrical precipitation of suspended particles from gases
US2631687A (en) * 1951-04-21 1953-03-17 Francis J Dohrer Rotary plate electrical precipitator
US2668600A (en) * 1953-04-06 1954-02-09 Research Corp Electrode structure
US2964126A (en) * 1958-10-03 1960-12-13 Joy Mfg Co Reciprocating drag conveyor
US3161464A (en) * 1960-03-25 1964-12-15 Svenska Flaektfabriken Ab Method in soda recovery boiler plants for re-feeding dust discharged from an electrostatic precipitator
US3425190A (en) * 1968-03-18 1969-02-04 Benjamin Ragland Electrostatic precipitator with electrode tensioning means

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US739733A (en) * 1903-03-14 1903-09-22 Robert Sobotka Cotton-separator.
US823463A (en) * 1904-11-15 1906-06-12 Dennis Deneen Gravity dust-collector.
US1157947A (en) * 1911-04-29 1915-10-26 Merrell Soule Co Collecting apparatus for finely-divided solids.
US1385723A (en) * 1919-08-15 1921-07-26 John J Glasheen Smelting minerals
US1481970A (en) * 1921-02-26 1924-01-29 Int Precipitation Co Apparatus for electrical precipitation of suspended particles from gases
US2631687A (en) * 1951-04-21 1953-03-17 Francis J Dohrer Rotary plate electrical precipitator
US2668600A (en) * 1953-04-06 1954-02-09 Research Corp Electrode structure
US2964126A (en) * 1958-10-03 1960-12-13 Joy Mfg Co Reciprocating drag conveyor
US3161464A (en) * 1960-03-25 1964-12-15 Svenska Flaektfabriken Ab Method in soda recovery boiler plants for re-feeding dust discharged from an electrostatic precipitator
US3425190A (en) * 1968-03-18 1969-02-04 Benjamin Ragland Electrostatic precipitator with electrode tensioning means

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026683A (en) * 1975-11-20 1977-05-31 Environmental Elements Corporation Inlet duct and hopper apparatus for electrostatic precipitators
WO1984001309A1 (fr) * 1982-10-01 1984-04-12 Donaldson Co Inc Collecteur de poussiere auto-nettoyant
US4443235A (en) * 1982-10-01 1984-04-17 Donaldson Company, Inc. Self-cleaning cabinet dust collector
US4913085A (en) * 1985-01-01 1990-04-03 Esb Elektorstatische Spruh-Und Beschichtungsanlagen G.F. Vohringer Gmbh Coating booth for applying a coating powder to the surface of workpieces
US4968330A (en) * 1989-09-01 1990-11-06 Fmc Corporation Apparatus for separating particulates in an electrostatic precipitator
US5695596A (en) * 1996-05-07 1997-12-09 Seguin; Jacques Apparatus for laying up veneer panels
WO2010129024A3 (fr) * 2009-04-28 2011-02-24 Cambridge International, Inc. Dépoussiéreur électrostatique et courroie de collecte d'autonettoyage pour celui-ci
CN107051748A (zh) * 2017-04-27 2017-08-18 铜陵有色兴铜机电制造有限公司 一种用于金属熔炼环节的双层清灰器
US20200353480A1 (en) * 2019-05-09 2020-11-12 Doosan Heavy Industries & Construction Co., Ltd. Electrostatic precipitator apparatus
US11524305B2 (en) * 2019-05-09 2022-12-13 Doosan Enerbility Co., Ltd. Electrostatic precipitator apparatus
US20200368760A1 (en) * 2019-05-20 2020-11-26 Doosan Heavy Industries & Construction Co., Ltd. Dust collecting tower apparatus
US11541401B2 (en) * 2019-05-20 2023-01-03 Dosan Enerbility Co., Ltd. Dust collecting tower apparatus
US20200368757A1 (en) * 2019-05-22 2020-11-26 Doosan Heavy Industries & Construction Co., Ltd. Horizontal electrostatic precipitator and electrostatic precipitation method using the same
US11577256B2 (en) * 2019-05-22 2023-02-14 Doosan Enerbility Co., Ltd. Horizontal electrostatic precipitator and electrostatic precipitation method using the same
GB2609216A (en) * 2021-07-22 2023-02-01 Edwards Ltd Electrostatic precipitator cleaning

Also Published As

Publication number Publication date
SE7511115L (sv) 1976-04-12
FR2287274B1 (fr) 1977-12-16
CA1045563A (fr) 1979-01-02
FR2287274A1 (fr) 1976-05-07
GB1487297A (en) 1977-09-28
SE397773B (sv) 1977-11-21
DE2544698A1 (de) 1976-04-22
DE2544698C3 (de) 1979-08-16
DE2544698B2 (de) 1978-11-30
IT1047744B (it) 1980-10-20

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