EP2266702A1 - Séparateur électrostatique destiné au nettoyage de gaz de fumée avec un champ de verrouillage électrique - Google Patents

Séparateur électrostatique destiné au nettoyage de gaz de fumée avec un champ de verrouillage électrique Download PDF

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Publication number
EP2266702A1
EP2266702A1 EP10003841A EP10003841A EP2266702A1 EP 2266702 A1 EP2266702 A1 EP 2266702A1 EP 10003841 A EP10003841 A EP 10003841A EP 10003841 A EP10003841 A EP 10003841A EP 2266702 A1 EP2266702 A1 EP 2266702A1
Authority
EP
European Patent Office
Prior art keywords
electrode
electrostatic precipitator
flue gas
field
particles
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.)
Granted
Application number
EP10003841A
Other languages
German (de)
English (en)
Other versions
EP2266702B1 (fr
Inventor
Hanns-Rudolf Paur
Andrei Bologa
Klaus Woletz
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.)
Karlsruher Institut fuer Technologie KIT
Original Assignee
Karlsruher Institut fuer Technologie KIT
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Publication date
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Publication of EP2266702A1 publication Critical patent/EP2266702A1/fr
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Publication of EP2266702B1 publication Critical patent/EP2266702B1/fr
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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
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/49—Collecting-electrodes tubular
    • 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
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/86—Electrode-carrying means
    • 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
    • B03C2201/08—Ionising electrode being a rod

Definitions

  • the invention relates to an electrostatic precipitator for the purification of flue gases, as incurred for example in combustion chambers, wood stoves or other wood burning plants.
  • Electrostatic separators are generally used for cleaning flue gas by particle separation.
  • the flue gas to be purified is introduced into the electrostatic precipitator, which comprises an ionization stage for the electric charge of the particles, and a collector stage for the separation of the charged particles.
  • the gas to be purified flows through the electric field between a high voltage electrode and a lying on a reference potential, usually ground potential electrode, in which the particles contained in the flue gas are electrically charged via corona discharge at the high voltage electrode.
  • the particles are deposited there on the surface lying at reference potential and electrically neutralized.
  • the DE 10 2008 005 096 describes a separator, which can be installed in a flue gas pipe, such as chimney pipe, and in which the particles located in the flue gas are first charged when passing the separator and then deposited on a arranged in the flow direction of the flue gas deposition electrode.
  • a flue gas pipe such as chimney pipe
  • Another electrostatic precipitator for installation in flue gas ducts is the EP 1974822 refer to. Also in this device, the electrostatic precipitator flows through in the flow direction of the flue gas. This arrangement has the disadvantage that the efficiency of the particle separation is reduced, since already separated particles can be entrained by the gas flow again and thus can increase the emission values.
  • the object of the invention to avoid the disadvantages mentioned and to provide an electrostatic precipitator, which ensures efficient flue gas cleaning at extended operating time.
  • Another object of the invention is to reduce downtime for cleaning work.
  • an electrostatic precipitator in which the high-voltage insulator is shielded from the flue gas to be cleaned by an electric blocking field. This causes soot and ash particle deposits greatly reduced on the insulator and the cleaning intervals to avoid flashovers due to these deposits are increased.
  • a shielding electrode is arranged axially radially to a means for electrically charging particles.
  • These means preferably consist of an element that can be acted upon by a high voltage, which is also referred to as a high-voltage electrode.
  • the shielding electrode is preferably designed tubular, wherein the shape of the cross section can be adapted to the design of the surrounding elements.
  • an electric field is formed between the high voltage electrode and the shield electrode. Decisive for the strength of the electric field is the size of the gap between the high voltage electrode and the shielding electrode.
  • the gap which preferably has the shape of an annular gap can be reduced and the electric field strength in this area is increased.
  • the electric field with increased field strength acts as an additional barrier for the particle-laden flue gas. A portion of the flue gas flows into this area, wherein the particles located in the flue gas are electrically charged and the further flow of the flue gas through the electric field, there is a force on the particles contained in the flue gas (electric charge carriers), wherein the depositing electrical charge carriers on the inner wall of the shielding electrode.
  • At least one further radial thickening is mounted on the end of the high-voltage electrode protruding from the shielding electrode in addition to the blocking field electrode.
  • the diameter of the Sperrfeldelektrode may differ from the diameter of the other radial thickening.
  • a further embodiment comprises a blocking field electrode which protrudes from the shielding electrode.
  • a blocking field electrode which protrudes from the shielding electrode.
  • the high voltage electrode comprises at its far end a corona electrode which is arranged in addition to the reverse field electrode. A portion of the flue gas flows around this corona electrode and the particles contained in the flue gas are electrically charged at this corona electrode via corona discharge at the high voltage electrode and deposited on the surface lying on reference potential and electrically neutralized. The purified gas flows through the clean gas outlet from the electrostatic precipitator.
  • Fig. 1 shows a schematic view of the electrostatic precipitator with a Sperrfeldelektrode and a concentrically arranged around this tubular shielding electrode.
  • the electrostatic precipitator comprises a tubular deposition chamber 1 with a laterally arranged inlet opening 2 for the flue gas and a laterally arranged opening 3 for the outlet of the clean gas.
  • the deposition chamber 1 has a lid 13 and a bottom 14.
  • a high-voltage insulator 4 is disposed below the lid 13 and above the inlet opening 2 , wherein an annular member 5 serves as a support.
  • the tubular shielding electrode 11 which projects axially into the deposition chamber 1, is likewise fastened to the annular element 5 .
  • the deposition chamber 1, the annular element 5 and the tubular shielding electrode 11 are electrically conductively connected to each other and have the same reference potential, preferably ground potential.
  • a high voltage electrode 6 is disposed axially in the deposition chamber 1 within the tubular shield electrode 11 and is fixed to the high voltage insulator 4 and connected to a high voltage power source not shown in the figure through a cable 7 passing through an opening channel 8 .
  • the high voltage electrode 6 has a radial thickening, the blocking field electrode 12 , which projects completely into the tubular shielding electrode 11 in the embodiment shown.
  • the high voltage electrode 6 a further radial thickening 9 , which projects into the deposition chamber 1 of the electrostatic precipitator and protrudes from the tubular shielding electrode 11 .
  • a corona electrode 10 is attached to the high voltage electrode 6 .
  • the shield electrode 11 causes the direct flow of soot and fly ash particles is suppressed from the flue gas to the high-voltage insulator. 4
  • the blocking field electrode 12 at the high-voltage electrode 6 causes the formation of an electric field between the blocking field electrode 12 and the shielding electrode 11 located at a reference potential. If charged particles enter this field, they deposit on the inner wall of the shielding electrode 11 under the influence of the electric field. Another electric field is formed between the second radial thickening 9 and the reference potential of the wall of the deposition chamber 1 .
  • the corona electrode 10 in interaction with the surface located at reference potential, causes a corona discharge, deposition and electrical neutralization of the particles in the flue gas.

Landscapes

  • Electrostatic Separation (AREA)
EP10003841.3A 2009-06-27 2010-04-10 Séparateur électrostatique destiné au nettoyage de gaz de fumée avec un champ de verrouillage électrique Active EP2266702B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009030803A DE102009030803A1 (de) 2009-06-27 2009-06-27 Elektrostatischer Abscheider zur Rauchgasreinigung mit einem elektrischen Sperrfeld

Publications (2)

Publication Number Publication Date
EP2266702A1 true EP2266702A1 (fr) 2010-12-29
EP2266702B1 EP2266702B1 (fr) 2019-06-12

Family

ID=42668570

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Application Number Title Priority Date Filing Date
EP10003841.3A Active EP2266702B1 (fr) 2009-06-27 2010-04-10 Séparateur électrostatique destiné au nettoyage de gaz de fumée avec un champ de verrouillage électrique

Country Status (2)

Country Link
EP (1) EP2266702B1 (fr)
DE (1) DE102009030803A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015197747A1 (fr) * 2014-06-25 2015-12-30 Commissariat à l'énergie atomique et aux énergies alternatives Collecteur electrostatique
CN105738711A (zh) * 2016-02-22 2016-07-06 清华大学 空间电荷测量用高压电极装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020125579A1 (de) 2020-09-30 2022-03-31 Woco Gmbh & Co. Kg Elektroabscheider, Rohrabschnitt und Schwebstaub erzeugende Anlage

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1371995A (en) * 1920-12-10 1921-03-15 Arthur F Nesbit Art of electrical precipitation
CH694645A5 (de) 2003-12-01 2005-05-13 Empa Vorrichtung zur elektrostatischen Partikelabscheidung in Gasströmen.
DE102007020504A1 (de) * 2006-05-18 2007-11-22 Fleetguard, Inc., Nashville Elektrostatischer Abscheider mit Beseitigung von Verunreinigungen der Masseelektrode
EP1974822A2 (fr) 2007-03-27 2008-10-01 Rudolf Bolliger Filtre à poussière fine électrostatique
US20080250926A1 (en) * 2007-04-10 2008-10-16 Yefim Riskin Method of air purification from dust and electrostatic filter
DE102008005096A1 (de) 2007-02-14 2008-11-06 Olaf Wilde Vorrichtung zur Reinigung von Rauchgas in Heizungsanlagen
US20090151568A1 (en) 2007-12-17 2009-06-18 Krigmont Henry V Space efficient hybrid collector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1050120A (fr) * 1952-02-01 1954-01-05 Onera (Off Nat Aerospatiale) Capteur de poussières
US4314885A (en) 1978-10-18 1982-02-09 The Babcock & Wilcox Company Industrial technique
DE3324803A1 (de) * 1983-07-09 1985-01-17 Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH, 4000 Düsseldorf Staubabscheidegeraet
DE102007010973B4 (de) * 2007-03-05 2008-10-16 Schmatloch Nückel Technologietransfer Elektrofilter für eine Kleinfeuerungsanlage

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1371995A (en) * 1920-12-10 1921-03-15 Arthur F Nesbit Art of electrical precipitation
CH694645A5 (de) 2003-12-01 2005-05-13 Empa Vorrichtung zur elektrostatischen Partikelabscheidung in Gasströmen.
DE102007020504A1 (de) * 2006-05-18 2007-11-22 Fleetguard, Inc., Nashville Elektrostatischer Abscheider mit Beseitigung von Verunreinigungen der Masseelektrode
DE102008005096A1 (de) 2007-02-14 2008-11-06 Olaf Wilde Vorrichtung zur Reinigung von Rauchgas in Heizungsanlagen
EP1974822A2 (fr) 2007-03-27 2008-10-01 Rudolf Bolliger Filtre à poussière fine électrostatique
US20080250926A1 (en) * 2007-04-10 2008-10-16 Yefim Riskin Method of air purification from dust and electrostatic filter
US20090151568A1 (en) 2007-12-17 2009-06-18 Krigmont Henry V Space efficient hybrid collector

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
J.R. MELCHER, K.S. SACHAR, E.P. WARREN: "Overview of Electrostatic Devices for Control of Submicrometric Particles", PROCEEDINGS OF THE IEEE, vol. 65, no. 12, 1977, pages 1659 - 1669, XP001339507

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015197747A1 (fr) * 2014-06-25 2015-12-30 Commissariat à l'énergie atomique et aux énergies alternatives Collecteur electrostatique
FR3022806A1 (fr) * 2014-06-25 2016-01-01 Commissariat Energie Atomique Collecteur electrostatique
US10384214B2 (en) 2014-06-25 2019-08-20 Commissariat A L'energie Atomique Et Aux Energies Alternatives Electrostatic collector
CN105738711A (zh) * 2016-02-22 2016-07-06 清华大学 空间电荷测量用高压电极装置
CN105738711B (zh) * 2016-02-22 2019-01-15 清华大学 空间电荷测量用高压电极装置

Also Published As

Publication number Publication date
DE102009030803A1 (de) 2011-01-05
EP2266702B1 (fr) 2019-06-12

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