EP3112030A1 - Selbstregenerierender elektrostatischer abscheider - Google Patents
Selbstregenerierender elektrostatischer abscheider Download PDFInfo
- Publication number
- EP3112030A1 EP3112030A1 EP16382292.7A EP16382292A EP3112030A1 EP 3112030 A1 EP3112030 A1 EP 3112030A1 EP 16382292 A EP16382292 A EP 16382292A EP 3112030 A1 EP3112030 A1 EP 3112030A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- conduit
- electrostatic precipitator
- self
- regenerative
- cleaning assembly
- 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
Links
- 239000002245 particle Substances 0.000 claims abstract description 36
- 238000004140 cleaning Methods 0.000 claims abstract description 28
- 239000012717 electrostatic precipitator Substances 0.000 claims abstract description 23
- 238000000151 deposition Methods 0.000 claims abstract description 19
- 230000006698 induction Effects 0.000 claims abstract description 18
- 230000008021 deposition Effects 0.000 claims abstract description 16
- 239000007787 solid Substances 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims abstract description 9
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 14
- 238000001914 filtration Methods 0.000 description 10
- 230000008929 regeneration Effects 0.000 description 9
- 238000011069 regeneration method Methods 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 8
- 230000005684 electric field Effects 0.000 description 6
- 239000002028 Biomass Substances 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005367 electrostatic precipitation Methods 0.000 description 2
- 239000012716 precipitator Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
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
-
- 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
- B03C2201/12—Cleaning the device by burning the trapped particles
Definitions
- the present invention is comprised in the field of systems or apparatus for reducing contaminating emissions in combustion systems, and more specifically for reducing emissions of particles in suspension in a gas stream generated, for example, by a biomass boiler or a diesel engine.
- the invention is particularly comprised in the field of electrostatic precipitators.
- Any combustion system is susceptible to generating contaminating emissions. These emissions are gas emissions, but they can also contain solid or liquid particles in suspension as a result of an imperfect combustion or ash present in the fuel exiting the system with the gas stream. Solid (biomass and carbon) combustion systems as well as reciprocating internal combustion (particularly diesel) engines are particularly unique as regards emissions of this type. The reason for their risks resides in the large number of particles given off and their reduced size (smaller than 1 ⁇ m) which do not readily settle in the atmosphere and are impossible for the human respiratory system to filter out.
- settling chambers or cyclones that separate the particles by centrifugal force
- filtering systems that retain aerosols by means of a porous (for example fiber) bed
- electrostatic precipitators that electrically charge the particles to then remove them from the gas stream as a result of the strong electric field generated between two electrodes, can be used.
- Each of the mentioned systems has features making them more or less advantageous depending on the type of combustion system.
- one of the biggest problems for the application thereof is the removal of particles deposited throughout the service life of the filter.
- a filtering system is used in diesel engines that accumulates unburned particles (of an organic origin) over time, and every so often they use a regeneration cycle. In other words, they send very hot gases to the filter, and as a result of the high temperature reached they burn the deposited particles again, recovering the filtration element's efficiency.
- the present invention proposes a particle filtering system using electrostatic precipitation which solves the aforementioned problems in the prior art.
- the present invention relates to a particle filtering system using electrostatic precipitation which is self-cleaning by means of heating the walls by electromagnetic induction.
- This self-cleaning method allows the continuous operation of the device and the removal of most of the trapped mass, thereby reducing emissions of solid particles in suspension in a gas stream in a continuous manner.
- the present invention proposes a system for filtering solid particles resulting from combustion by means of a self-regenerative electrostatic precipitator.
- a cylindrical precipitator with a high-voltage electrode in the center of the chimney or gas conduit generates a strong electric field which results in the creation of a corona discharge region.
- the particles in suspension in the gas stream, most of which are of a carbon origin (unburned) are ionized and deflected towards the deposition electrode by the same electric field that charged them or by another different one (a one- or two-stage precipitator).
- the deposition electrode of the present invention will be the outer cylindrical body of the conduit (or conduits) in which deposition takes place.
- induction coils outside the tube will be electrically activated. These coils wound around the conduit will receive high-frequency alternating current, generating electromagnetic induction in the wall of the conduit and thereby heating it with the currents induced in same. This will lead to a rise in the temperature of the wall until it is high enough to start burning the particles that are deposited on the inner face of the conduit. If the deposition surface is larger than the surface covered by the induction coils, two alternatives are provided: relative movement of the coils with respect to the conduit, or the existence of various coils which are sequentially activated to heat the entire surface.
- a first aspect of the invention relates to a self-regenerative electrostatic precipitator, of the type comprising a discharge electrode located inside a gas conduit for generating a corona discharge and for depositing solid particles in suspension in a gas stream circulating through the conduit in a deposition layer on the inner wall of the conduit.
- the self-regenerative electrostatic precipitator comprises at least one cleaning assembly arranged outside the conduit, each cleaning assembly having at least one induction coil wound around the conduit for heating the wall of the conduit by electromagnetic induction.
- the at least one induction coil of each cleaning assembly is preferably surrounded by at least one layer of insulating material.
- the electrostatic precipitator preferably comprises at least one securing element for fixing the discharge electrode inside the conduit.
- the electrostatic precipitator comprises several cleaning assemblies the induction coils of which are activated together or sequentially.
- the electrostatic precipitator comprises means for moving the cleaning assembly (or assemblies) along a section of the conduit.
- the electrostatic precipitator can further comprise high-frequency alternating current generating means in the at least one induction coil.
- the particle retaining equipment used in the present invention is a cylindrical electrostatic precipitator.
- Figure 1 depicts a cross-section view of the electrostatic precipitator 10 formed by a discharge electrode 1, securing elements 2 for securing the discharge electrode and a gas conduit 3 through the inside of which the combustion gases circulate and in which the collected particles accumulate in a deposition layer 4 having an increasing thickness.
- the regeneration system is formed by assemblies of induction coils 6, lead cable, and layers of insulating material 5.
- the discharge electrode 1 generates the corona discharge for charging the solid particles in the combustion gases with particles 11 (the fume stream).
- the electric field generated between the discharge electrode 1 and the wall of the conduit 3 deflects the particles in suspension and causes them to be trapped, clean, particle-free gases 12 exiting the filtering system.
- the central discharge electrode 1 can be secured in various manners (separating arms, floating electrode, etc.), without this affecting the nature of the present invention. In the example shown in Figure 1 , it is done by means of securing arms 2 built using an electrically insulating material.
- the present invention incorporates a regeneration or self-cleaning system. It is formed by a series of induction coils 6 wound around the conduit 3. To protect them against the high temperature and to prevent unwanted electrical contacts they are internally and externally insulated with layers of insulating material 5.
- the induction coils 6 are subjected to a high-frequency alternating current, causing the induction electric currents in the body of the deposition electrode 3.
- the temperature of the conduit will increase up to values exceeding the ignition temperature of the particles deposited in the deposition layer 4.
- the cleaning process is therefore based on burning the deposited particles again using the high temperature generated by means of electromagnetic induction on the deposition electrode.
- the cleaning and regeneration system can be formed by several cleaning assemblies 7, as shown in Figure 1 , where four independent cleaning assemblies 7 can be seen, each being formed by a wound induction coil 6 and two layers of insulating material 5.
- Figure 2 shows a view of detail A of Figure 1 , in which a cleaning and regeneration assembly can be seen.
- the regeneration system is therefore formed by different assemblies of induction coils 6 and layers of insulating material 5. As many cleaning assemblies as required for burning the particles deposited on the entire wall of the conduit 3 can be used. Furthermore, the different cleaning assemblies do not have to be activated at the same time, but rather they can be activated in an alternating manner, depending on cleaning needs.
Landscapes
- Electrostatic Separation (AREA)
- Processes For Solid Components From Exhaust (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES201531292U ES1147908Y (es) | 2015-06-30 | 2015-06-30 | Precipitador electrostático autoregenerable |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3112030A1 true EP3112030A1 (de) | 2017-01-04 |
EP3112030B1 EP3112030B1 (de) | 2021-05-05 |
Family
ID=54838468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16382292.7A Active EP3112030B1 (de) | 2015-06-30 | 2016-06-23 | Selbstregenerierender elektrostatischer abscheider |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3112030B1 (de) |
DK (1) | DK3112030T3 (de) |
ES (2) | ES1147908Y (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109940000A (zh) * | 2019-04-24 | 2019-06-28 | 伟通工业设备(江苏)有限公司 | Uv固化防雾涂装线用可间隔蓄压冲刷的静电除尘装置 |
CN112588442A (zh) * | 2020-11-28 | 2021-04-02 | 西安西热控制技术有限公司 | 一种火电厂静电除尘装置 |
EP3848563A1 (de) * | 2020-01-09 | 2021-07-14 | terraplasma emission control GmbH | Abgasnachbehandlungssystem, verwendung davon und fahrzeug damit |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6092387A (en) * | 1998-02-19 | 2000-07-25 | Funai Electric Co., Ltd. | Air conditioner with electric dust collector |
JP2002047914A (ja) * | 2000-08-04 | 2002-02-15 | Takashi Yamaguchi | ディーゼル自動車エンジンの排気ガス浄化装置 |
JP2004132338A (ja) * | 2002-10-15 | 2004-04-30 | Tama Tlo Kk | 排気浄化装置 |
DE10345925A1 (de) * | 2003-10-02 | 2005-05-04 | Opel Adam Ag | Partikelfilter für einen Verbrennungsgasstrom mit induktivem Regenerationsverfahren |
WO2005097332A1 (de) * | 2004-04-08 | 2005-10-20 | Eidgenössische Materialprüfungs- und Forschungsanstalt Empa | Verfahren zur steuerung einer vorrichtung für die elektrostatische partikelabscheidung in gasströmen, sowie steuerungseinheit hierzu |
US20050262817A1 (en) * | 2002-12-26 | 2005-12-01 | Yoshihiro Hatanaka | Apparatus for removing fine particles in exhaust gas |
DE202007004263U1 (de) * | 2007-02-16 | 2007-07-05 | Otto Spanner Gmbh | Elektrofilter |
US20090074630A1 (en) * | 2007-09-18 | 2009-03-19 | Gm Global Technology Operations, Inc. | Inductively heated particulate matter filter regeneration control system |
EP2583755A1 (de) * | 2011-10-18 | 2013-04-24 | Karlsruher Institut für Technologie | Vorrichtung, Gerät und Verfahren zum Filtern feinen Schwebstoffteilchen aus Abgas |
-
2015
- 2015-06-30 ES ES201531292U patent/ES1147908Y/es active Active
-
2016
- 2016-06-23 ES ES16382292T patent/ES2881697T3/es active Active
- 2016-06-23 EP EP16382292.7A patent/EP3112030B1/de active Active
- 2016-06-23 DK DK16382292.7T patent/DK3112030T3/da active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6092387A (en) * | 1998-02-19 | 2000-07-25 | Funai Electric Co., Ltd. | Air conditioner with electric dust collector |
JP2002047914A (ja) * | 2000-08-04 | 2002-02-15 | Takashi Yamaguchi | ディーゼル自動車エンジンの排気ガス浄化装置 |
JP2004132338A (ja) * | 2002-10-15 | 2004-04-30 | Tama Tlo Kk | 排気浄化装置 |
US20050262817A1 (en) * | 2002-12-26 | 2005-12-01 | Yoshihiro Hatanaka | Apparatus for removing fine particles in exhaust gas |
DE10345925A1 (de) * | 2003-10-02 | 2005-05-04 | Opel Adam Ag | Partikelfilter für einen Verbrennungsgasstrom mit induktivem Regenerationsverfahren |
WO2005097332A1 (de) * | 2004-04-08 | 2005-10-20 | Eidgenössische Materialprüfungs- und Forschungsanstalt Empa | Verfahren zur steuerung einer vorrichtung für die elektrostatische partikelabscheidung in gasströmen, sowie steuerungseinheit hierzu |
DE202007004263U1 (de) * | 2007-02-16 | 2007-07-05 | Otto Spanner Gmbh | Elektrofilter |
US20090074630A1 (en) * | 2007-09-18 | 2009-03-19 | Gm Global Technology Operations, Inc. | Inductively heated particulate matter filter regeneration control system |
EP2583755A1 (de) * | 2011-10-18 | 2013-04-24 | Karlsruher Institut für Technologie | Vorrichtung, Gerät und Verfahren zum Filtern feinen Schwebstoffteilchen aus Abgas |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109940000A (zh) * | 2019-04-24 | 2019-06-28 | 伟通工业设备(江苏)有限公司 | Uv固化防雾涂装线用可间隔蓄压冲刷的静电除尘装置 |
CN109940000B (zh) * | 2019-04-24 | 2023-11-28 | 伟通工业设备(江苏)有限公司 | Uv固化防雾涂装线用可间隔蓄压冲刷的静电除尘装置 |
EP3848563A1 (de) * | 2020-01-09 | 2021-07-14 | terraplasma emission control GmbH | Abgasnachbehandlungssystem, verwendung davon und fahrzeug damit |
CN112588442A (zh) * | 2020-11-28 | 2021-04-02 | 西安西热控制技术有限公司 | 一种火电厂静电除尘装置 |
Also Published As
Publication number | Publication date |
---|---|
DK3112030T3 (da) | 2021-08-09 |
ES2881697T3 (es) | 2021-11-30 |
ES1147908Y (es) | 2016-03-10 |
EP3112030B1 (de) | 2021-05-05 |
ES1147908U (es) | 2015-12-18 |
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