WO2003061837A1 - Procédé et dispositif pour empêcher le dépôt de suie sur les parties isolantes d'un filtre électrostatique - Google Patents
Procédé et dispositif pour empêcher le dépôt de suie sur les parties isolantes d'un filtre électrostatique Download PDFInfo
- Publication number
- WO2003061837A1 WO2003061837A1 PCT/FR2003/000239 FR0300239W WO03061837A1 WO 2003061837 A1 WO2003061837 A1 WO 2003061837A1 FR 0300239 W FR0300239 W FR 0300239W WO 03061837 A1 WO03061837 A1 WO 03061837A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- repulsion
- insulating parts
- potential difference
- peripheral
- Prior art date
Links
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
- B03C3/66—Applications of electricity supply techniques
- B03C3/70—Applications of electricity supply techniques insulating in electric separators
Definitions
- the invention relates to a method and a system for preventing, in an electrostatic filter comprising insulating parts, the deposition of soot particles on the insulating parts.
- the invention relates to a method for preventing, in an electrostatic filter comprising insulating parts, the deposition of soot particles on the insulating parts.
- the method according to the invention comprises the step of creating an electric repulsion field in the vicinity of the insulating parts. This prevents the formation of a conductive channel on the surface of the insulating parts.
- the electrostatic filter comprises at least one central electrode and one peripheral electrode held by the insulating parts.
- to create the electric repulsion field - at least one of the insulating parts is placed in or on at least one repulsion electrode,
- the potential difference between the repulsion electrode and the central electrode, as well as the potential difference between the repulsion electrode and the peripheral electrode creates an electric field repelling the soot particles. This prevents the formation of a soot film on the surface of the insulating parts. This prevents the formation of a conductive channel on the surface of the insulating parts, in and / or on the soot film, between the central electrode and the peripheral electrode.
- the voltage applied to the repulsion electrode is between -10 KV and -25 KV.
- the potential difference between the repulsion electrode and the central electrode is between -35 KV and 0 KV.
- the method is such that the potential difference between the repulsion electrode and the peripheral electrode is between -10 KV and -25 KV.
- the invention also relates to a system for preventing, in an electrostatic filter comprising insulating parts, the deposition of soot particles on the insulating parts.
- the system includes means for creating an electric repulsion field in the vicinity of the insulating parts. This prevents the formation of a conductive channel on the surface of the insulating parts.
- the electrostatic filter comprises at least one central electrode and one peripheral electrode held by the insulating parts.
- the repulsion means for creating an electric repulsion field in the vicinity of the insulating parts include:
- a repulsion electrode located in or on the insulating part, an adequate voltage generator connected to the repulsion electrode.
- the repulsion electrode is mounted on the central electrode and has the shape of a bell covering the insulating parts.
- the voltage supplied by the voltage generator and applied to the repulsion electrode is between - 10 KV and - 25 KV.
- the voltage supplied by the voltage generator is such that the potential difference between the repulsion electrode and the central electrode is between -35 KV and 0 KV.
- the voltage supplied by the voltage generator is such that the potential difference between the repulsion electrode and the peripheral electrode is between -10 KV and -25 KV.
- FIG. 1 which represents a schematic view, in cutaway perspective, of an alternative embodiment of the invention
- FIG. 2a and FIG. 2b which respectively represent a view from the left and a view in partial section of the variant of FIG. 1
- Figure 3 which shows a schematic sectional view of another alternative embodiment of the invention.
- the electrostatic filter 1 comprises at least one central electrode 6 and a peripheral electrode 7 (forming the outer wall of the electrostatic filter 1).
- the central electrode 6 and the peripheral electrode 7 are held by insulating parts 2.
- the exhaust gases from the engine from which it is necessary to remove the soot enter via inlet pipes 10 and exit through outlet pipes 11
- the electrostatic filter 1 also includes repulsion means for creating an electric repulsion field 4 in the vicinity of the insulating parts 2.
- These repulsion means comprise a repulsion electrode 8, 12 located in the insulating part and a voltage generator 9 connected to the repulsion electrode 8, 12.
- the metal repulsion electrode 8, 12 is covered with an insulating material, in particular an enamel layer.
- the voltages supplied by the voltage generator 9 and applied to the repulsion electrode 8 are suitable for this purpose.
- the repulsion electrode 8 can be:
- the potential of the repulsion electrode 8 is of the same sign as the potential of the central electrode 6, - at a potential lower than the potential of the central electrode 6.
- the voltage supplied by the voltage generator 9 and applied to the repulsion electrode 8 is between - 10 KV and - 25 KV.
- the voltage supplied by the voltage generator 9 is such that the potential difference between the repulsion electrode 8 and the central electrode 6 is between -35 KV and 0 KV.
- the voltage supplied by the voltage generator 9 is such that the potential difference between the repulsion electrode 8 and the peripheral electrode 7 is between -10 KV and -25 KV.
- FIG 3 shows a schematic sectional view of another alternative embodiment of the invention. We recognize in this figure most of the elements described with reference to Figures 1, 2a and 2b. They have the same reference numbers.
- the repulsion electrode 8 is mounted on the central electrode 6, near the insulating cylindrical part 2 carrying the central electrode 6.
- the repulsion electrode 8 has the form d 'a bell extending above the insulating parts 2. More specifically, the bell-shaped repulsion electrode 8 is closed by a disc 8a fixed to the central electrode 6. The plane of the disc 8a is perpendicular to the 'central electrode 6.
- the disc 8a is extended by a cylindrical tube 8b surrounding the insulating part 2a carrying the central electrode 6 and extending to the vicinity of the annular part 2b of the insulating part carrying the peripheral electrode 7.
- An annular disc 8c is fixed to the tube 8b, parallel to the annular part 2b of the insulating part, near the latter.
- a cylindrical skirt 8d is fixed to the annular disc 8c. The cylindrical skirt 8d is concentric with the peripheral electrode 7 and st located near it.
- the elements 8a, 8b, 8c and d form the bell 8.
Landscapes
- Electrostatic Separation (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/502,375 US20050115410A1 (en) | 2002-01-24 | 2003-01-24 | Method and device for avoiding the deposition of soot on the insulating components of an electrostatic filter |
EP03718819A EP1472003A1 (fr) | 2002-01-24 | 2003-01-24 | Procede et dispositif pour empecher le depot de suie sur les parties islolantes d'un filtre electrostatique |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0200893A FR2834919B1 (fr) | 2002-01-24 | 2002-01-24 | Procede et dispositif pour empecher le depot de suie sur les parties isolantes d'un filtre electrostatique |
FR02/00893 | 2002-01-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003061837A1 true WO2003061837A1 (fr) | 2003-07-31 |
Family
ID=27589577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2003/000239 WO2003061837A1 (fr) | 2002-01-24 | 2003-01-24 | Procédé et dispositif pour empêcher le dépôt de suie sur les parties isolantes d'un filtre électrostatique |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050115410A1 (fr) |
EP (1) | EP1472003A1 (fr) |
CN (1) | CN1622859A (fr) |
FR (1) | FR2834919B1 (fr) |
WO (1) | WO2003061837A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3082760A1 (fr) * | 2018-06-22 | 2019-12-27 | Daniel Teboul | Dispositif de purification d'un milieu gazeux charge de particules |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1332510A (en) * | 1918-03-06 | 1920-03-02 | Research Corp | Device for protecting insulators in electric precipitators |
US20010020417A1 (en) * | 1998-11-25 | 2001-09-13 | Liu Benjamin Y.H. | Compact high efficiency electrostatic precipitator for droplet aerosol collection |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3400513A (en) * | 1966-09-08 | 1968-09-10 | Babcock & Wilcox Co | Electrostatic precipitator |
DE3500375A1 (de) * | 1985-01-08 | 1986-07-10 | Robert Bosch Gmbh, 7000 Stuttgart | Vorrichtung zum entfernen von festkoerperpartikeln, insbesondere russteilchen, aus dem abgas von brennkraftmaschinen |
DE3820740A1 (de) * | 1988-06-18 | 1989-12-21 | Bosch Gmbh Robert | Koagulator fuer einrichtungen zum reinigen von abgasen fossiler brennstoffe |
-
2002
- 2002-01-24 FR FR0200893A patent/FR2834919B1/fr not_active Expired - Fee Related
-
2003
- 2003-01-24 WO PCT/FR2003/000239 patent/WO2003061837A1/fr not_active Application Discontinuation
- 2003-01-24 US US10/502,375 patent/US20050115410A1/en not_active Abandoned
- 2003-01-24 EP EP03718819A patent/EP1472003A1/fr not_active Withdrawn
- 2003-01-24 CN CN03802634.1A patent/CN1622859A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1332510A (en) * | 1918-03-06 | 1920-03-02 | Research Corp | Device for protecting insulators in electric precipitators |
US20010020417A1 (en) * | 1998-11-25 | 2001-09-13 | Liu Benjamin Y.H. | Compact high efficiency electrostatic precipitator for droplet aerosol collection |
Also Published As
Publication number | Publication date |
---|---|
US20050115410A1 (en) | 2005-06-02 |
EP1472003A1 (fr) | 2004-11-03 |
CN1622859A (zh) | 2005-06-01 |
FR2834919A1 (fr) | 2003-07-25 |
FR2834919B1 (fr) | 2004-12-10 |
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