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EP0478533A1 - Procédé de nettoyage des électrodes d'ionisation et de la chambre d'admission de gaz pollué, d'une installation de filtre électrostatique à lit fluidisé et installation pour cela - Google Patents

Procédé de nettoyage des électrodes d'ionisation et de la chambre d'admission de gaz pollué, d'une installation de filtre électrostatique à lit fluidisé et installation pour cela Download PDF

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Publication number
EP0478533A1
EP0478533A1 EP91890195A EP91890195A EP0478533A1 EP 0478533 A1 EP0478533 A1 EP 0478533A1 EP 91890195 A EP91890195 A EP 91890195A EP 91890195 A EP91890195 A EP 91890195A EP 0478533 A1 EP0478533 A1 EP 0478533A1
Authority
EP
European Patent Office
Prior art keywords
raw gas
gas space
granulate
particles
installation
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.)
Ceased
Application number
EP91890195A
Other languages
German (de)
English (en)
Inventor
Georg Strasser
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.)
Alois Sceuch GmbH
Original Assignee
Alois Sceuch GmbH
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 Alois Sceuch GmbH filed Critical Alois Sceuch GmbH
Publication of EP0478533A1 publication Critical patent/EP0478533A1/fr
Ceased legal-status Critical Current

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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
    • B03C3/74—Cleaning the electrodes
    • B03C3/80—Cleaning the electrodes by gas or solid particle blasting
    • 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
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/14—Plant or installations having external electricity supply dry type characterised by the additional use of mechanical effects, e.g. gravity
    • B03C3/145—Inertia

Definitions

  • the invention relates to a method for cleaning the ionization electrodes and the raw gas space in an electrical packed bed filter system, and to a system in which the said method is used.
  • Said electrical packed bed filter systems comprise a raw gas space with at least one ionization electrode located therein, a filter bed of granulate particles surrounding the raw gas space essentially in tubular form, the filter bed being limited by granule guiding devices, granule feed devices above and granulate discharge devices below the raw gas space, as well as a cleaning system for the granulate particles from the filter bed.
  • the raw gas contaminated with dust particles is introduced into the raw gas space of the plant, where the dust particles are ionized by the at least one electrode. Then the raw gas with the ionized dust particles passes through the filter bed made of bulk material, preferably stones, which are preferably polarized by means of a bed electrode.
  • the negatively charged dust particles accumulate on the positively polarized sides of the bulk material particles and are thus filtered out of the gas flow.
  • the emerging clean gas stream is finally collected in a clean gas chamber and discharged outside.
  • the particles in the filter bed are in constant motion from top to bottom and are continuously discharged.
  • the granulate particles are then cleaned and are then ready for another passage through the filter bed while the separated dust is collected in a storage container.
  • the back-spraying effect of the ionization electrodes attracts dust particles during operation of the system and attaches them to the electrodes. Especially with sticky dusts or These deposits can no longer be removed from aerosols by conventional cleaning methods or only at the risk of damaging the electrodes.
  • Conventional methods include, for example, manual or automatic tapping, blowing off the surfaces of the electrodes with compressed air or shaking them using conventional vibrators, as described, for example, in US Pat. No. 4,374,652.
  • the object of the present invention is to provide a simple, automatically executable and damage-proof method for cleaning the electrodes or the granulate guiding devices .
  • Another task was to specify an electrical packed bed filter system which is suitable for carrying out the method.
  • the object is achieved according to the invention by introducing granulate particles through at least one opening at the top of the raw gas space, after which the ionization electrodes and the inside of the inner granulate guide devices are cleaned and discharged by gas turbulence and / or impact on the granulate particles of the granules from the raw gas space, preferably cleaning together with the granules in the filter bed of the plant and returning both granules to the granules circuit.
  • the further object is achieved according to the invention in the system specified at the beginning by at least one feed line for granulate particles branching off from at least one of the granulate feed lines into the raw gas space, at least one opening being provided at the top of the raw gas space for introducing the granules.
  • FIG. 1 shows an electrical packed bed filter system according to the generic term and FIG. 2 shows the upper region of the separating-active part of the system in a schematic representation according to an embodiment of the invention.
  • the raw gas contaminated with the dust particles to be separated is introduced into the raw gas space 2 of the plant through a feed pipe 1.
  • the dust particles are ionized by an electrode 3 to which a high negative voltage is applied.
  • the raw gas with the ionized dust particles then passes through the bed filter bed 4.
  • Its particles, preferably small stones, are passed through a tubular, perforated bed electrode 5, which is arranged in the middle of the essentially tubular filter bed, by applying a high positive Voltage polarizes.
  • the negatively ionized dust particles now accumulate on the positively polarized sides of the stones, which means that they are filtered out of the gas stream.
  • the filtered emerging clean gas flow is finally caught in a cleaning chamber 6 and discharged into the open by means of further devices, not shown.
  • the granules in the filter bed 4 are in constant movement from top to bottom and the individual particles are continuously discharged through the filter bed cone 7.
  • the outlet opening can be dimensioned and thus the discharge rate can be precisely defined.
  • the granulate particles in the cleaning system 9, 10, 11 are then freed of dust and again, for example from the collecting pot 12, are returned to the filter bed 4 via the lines 13.
  • the ionization electrode 3 extends over the entire length of the raw gas space 2 and thus also of the granulate filter bed 4 in the system shown by way of example.
  • the ionization electrode is included as an electrode basket a plurality of individual electrodes, which are interconnected.
  • the ionization electrodes 3 are suspended, for example, via the insulator 14 in the uppermost region of the raw gas space.
  • the separated dust is transported into a dust container 16 via a tubular fabric filter 15.
  • FIG. 2 now shows an enlarged view of the upper region of the part of the installation which is active in the separation according to an exemplary embodiment of the invention.
  • the structure of the ionization electrode 3 suspended from the ionizer 14 from a plurality of individual electrodes 31 can be seen even more clearly.
  • Said individual electrodes 31 are connected to one another by connecting elements 33 and fastened to the central tube 32.
  • the individual electrodes 31 can be provided with tips 34.
  • the guide devices for the granulate particles of the filter bed can also be clearly seen, the outer guide devices with 41, and the inner guide devices are designated with 42. Both guide devices consist of ring-shaped, conical sections arranged one above the other, which allow the entry of the raw gas on the inside at 42 or the exit of the clean gas on the outside at 41.
  • At least one feed line 20 for granule particles branching off from at least one of the granule feed lines 13 is provided into the raw gas space 2, at least one opening 21 on the top of the raw gas space 2 serving for introducing the granules.
  • a discharge device (not shown) for the granules from the raw gas space 2 can be provided in the lower region of the raw gas space 2.
  • the simplest and preferred solution for discharging the granulate particles from the raw gas space is to simply let the stones fall through the bottom section of the raw gas chamber 2, which is designed in a funnel-like manner, into the filter bed cone 7 and then to convey the granulate together with that from the filter bed 4 .
  • Granule particles are introduced into the raw gas space 2 at least occasionally through the at least one opening 21, after which the ionization electrode 3 and the inside of the inner granule guide device 42 are cleaned by gas turbulence and / or impact of the introduced granule particles. Thereafter, the granules located in the raw gas space 2 are discharged from the raw gas space, possibly via the device 25, and are cleaned, preferably together with the granular content of the filter bed 4 of the system, and returned to the granulate circuit.
  • a plurality of supply lines 20 are in the raw gas space 2 and a corresponding number of openings 21, preferably evenly distributed along a circle around the axis of the raw gas space 2, on the top of the Raw gas room 2 is provided.
  • the granulate particles can be introduced into the raw gas space at a plurality of openings, preferably equally distributed along a circle around the axis of the raw gas space.
  • 2 dosing or shut-off units 22 are arranged in the feed lines 20 for the granulate particles in the raw gas space.
  • the cleaning system By means of the cleaning system according to the invention, sticky dusts or aerosols can also be effectively removed from the ionization electrodes or the guiding devices for the granulate filter bed, the system being able to continue its operation and no manual work being necessary.
  • the electrodes are also not exposed to the loads which occur, for example, when deposits are scraped off and up by moving elements which are provided with sharp-edged through openings for the electrode wires 31, and the electrode is cleaned in this way.

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  • Electrostatic Separation (AREA)
EP91890195A 1990-09-24 1991-09-02 Procédé de nettoyage des électrodes d'ionisation et de la chambre d'admission de gaz pollué, d'une installation de filtre électrostatique à lit fluidisé et installation pour cela Ceased EP0478533A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1930/90 1990-09-24
AT193090A AT393969B (de) 1990-09-24 1990-09-24 Verfahren zur abreinigung der ionisationselektroden und des rohgasraumes bei einer elektro-schuettschichtfilter-anlage sowie eine anlage, bei welcher das besagte verfahren zur anwendung kommt

Publications (1)

Publication Number Publication Date
EP0478533A1 true EP0478533A1 (fr) 1992-04-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91890195A Ceased EP0478533A1 (fr) 1990-09-24 1991-09-02 Procédé de nettoyage des électrodes d'ionisation et de la chambre d'admission de gaz pollué, d'une installation de filtre électrostatique à lit fluidisé et installation pour cela

Country Status (2)

Country Link
EP (1) EP0478533A1 (fr)
AT (1) AT393969B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4216313A1 (de) * 1992-05-16 1993-11-18 Turbon Tunzini Klimatechnik Vorrichtung und Verfahren zum Abscheiden von Fremdstoffen aus einem gasförmigen Medium
CN115790229A (zh) * 2023-02-13 2023-03-14 成都天保节能环保工程有限公司 一种适用于流化床蓄热的结构及方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105057109B (zh) * 2015-08-07 2017-06-06 浙江大学 采用颗粒冲刷清灰的线板式高温静电除尘装置及其方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE861382C (de) * 1952-11-13 Metallgesellschaft Aktiengesellschaft, Frankfurt/ M Verfahren und Einrichtung zur Reinigung von Elektrofiltern
GB690628A (en) * 1950-06-30 1953-04-22 Green & Son Ltd Improvements in or connected with electrostatic dust extractors
US3926587A (en) * 1974-09-19 1975-12-16 Arthur M Squires Electrostatic filtration in panel bed
FR2440221A1 (fr) * 1978-10-30 1980-05-30 Combustion Power Procede et appareil pour debarrasser un gaz d'une matiere solide finement divisee

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT284417B (de) * 1963-02-25 1970-09-10 Kunststoffmaschinen Ag Strangpresse für eine Formblastvorrichtung zur Herstellung eines Schlauches
US3357050A (en) * 1966-03-11 1967-12-12 Owens Illinois Inc Apparatus for extruding plasticized material
US3453690A (en) * 1967-05-26 1969-07-08 Midland Ross Corp Variable area extruder die-head
DE1804640C2 (de) * 1968-10-18 1974-01-24 Erhard 5892 Meinerzhagen Langecker Spritzkopf zur Herstellung von Kunststoffrohren oder -schläuchen
US3690798A (en) * 1969-10-24 1972-09-12 Packaging Ind Inc Extruder head
DE3003124A1 (de) * 1980-01-29 1981-07-30 Richard William Phoenix Ariz. Schuff Verfahren zur staubabscheidung aus einem gasstrom
DE3043228A1 (de) * 1980-11-15 1982-07-01 Mauser-Werke GmbH, 5040 Brühl Strangpresskopf

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE861382C (de) * 1952-11-13 Metallgesellschaft Aktiengesellschaft, Frankfurt/ M Verfahren und Einrichtung zur Reinigung von Elektrofiltern
GB690628A (en) * 1950-06-30 1953-04-22 Green & Son Ltd Improvements in or connected with electrostatic dust extractors
US3926587A (en) * 1974-09-19 1975-12-16 Arthur M Squires Electrostatic filtration in panel bed
FR2440221A1 (fr) * 1978-10-30 1980-05-30 Combustion Power Procede et appareil pour debarrasser un gaz d'une matiere solide finement divisee

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4216313A1 (de) * 1992-05-16 1993-11-18 Turbon Tunzini Klimatechnik Vorrichtung und Verfahren zum Abscheiden von Fremdstoffen aus einem gasförmigen Medium
CN115790229A (zh) * 2023-02-13 2023-03-14 成都天保节能环保工程有限公司 一种适用于流化床蓄热的结构及方法

Also Published As

Publication number Publication date
AT393969B (de) 1992-01-10
ATA193090A (de) 1991-07-15

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