EP2616646A1 - VORRICHTUNG ZUR BEHANDLUNG VON RUßPARTIKEL ENTHALTENDEM ABGAS - Google Patents
VORRICHTUNG ZUR BEHANDLUNG VON RUßPARTIKEL ENTHALTENDEM ABGASInfo
- Publication number
- EP2616646A1 EP2616646A1 EP11769804.3A EP11769804A EP2616646A1 EP 2616646 A1 EP2616646 A1 EP 2616646A1 EP 11769804 A EP11769804 A EP 11769804A EP 2616646 A1 EP2616646 A1 EP 2616646A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- exhaust gas
- soot particles
- filter element
- ionization
- 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 title claims abstract description 64
- 239000004071 soot Substances 0.000 title claims abstract description 58
- 239000007789 gas Substances 0.000 title abstract description 65
- 238000010292 electrical insulation Methods 0.000 claims description 30
- 230000008021 deposition Effects 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000003197 catalytic effect Effects 0.000 claims description 2
- 230000002101 lytic effect Effects 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract 1
- 230000005684 electric field Effects 0.000 description 10
- 230000008929 regeneration Effects 0.000 description 6
- 238000011069 regeneration method Methods 0.000 description 6
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000012717 electrostatic precipitator Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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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
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
- B03C3/06—Plant or installations having external electricity supply dry type characterised by presence of stationary tube electrodes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
-
- 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
- B03C3/36—Controlling flow of gases or vapour
-
- 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
- B03C3/12—Plant or installations having external electricity supply dry type characterised by separation of ionising and collecting stations
-
- 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
- B03C3/36—Controlling flow of gases or vapour
- B03C3/361—Controlling flow of gases or vapour by static mechanical means, e.g. deflector
- B03C3/363—Controlling flow of gases or vapour by static mechanical means, e.g. deflector located before the filter
-
- 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
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/49—Collecting-electrodes tubular
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/16—Selection of particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/01—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust by means of electric or electrostatic separators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/0231—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems [CRT]
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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
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/06—Ionising electrode being a needle
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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
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/10—Ionising electrode has multiple serrated ends or parts
-
- 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
- B03C2201/30—Details of magnetic or electrostatic separation for use in or with vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/04—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric, e.g. electrostatic, device other than a heater
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/20—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/32—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/38—Honeycomb supports characterised by their structural details flow channels with means to enhance flow mixing,(e.g. protrusions or projections)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/42—Honeycomb supports characterised by their structural details made of three or more different sheets, foils or plates stacked one on the other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/48—Honeycomb supports characterised by their structural details characterised by the number of flow passages, e.g. cell density
Definitions
- the present invention relates to an apparatus for the treatment of soot particles containing exhaust gas, in particular with a so-called electrostatic filter or electrostatic precipitator.
- the invention finds particular application in the treatment of exhaust gases of mobile internal combustion engines in the automotive sector, in particular in the treatment of exhaust gases resulting from diesel fuel.
- soot particles contained in the exhaust gas of the internal combustion engine, which must not be discharged into the environment. This is predetermined by corresponding exhaust regulations that specify limit values for the number and mass of soot particles per exhaust gas weight or exhaust gas volume and in some cases also for an entire motor vehicle. Soot particles are in particular unburned carbons and hydrocarbons in the exhaust gas.
- soot particles are usually much easier to separate in a filter system. Soot particle agglomerates are transported more carrier in an exhaust gas flow due to their greater inertia and thus store easier at deflection of an exhaust gas flow. Electronically charged soot particles are attracted to surfaces due to their charge, to which they attach and release their charge. This also facilitates the removal of soot particles from the exhaust stream in the operation of motor vehicles.
- a plurality of spray electrodes and collector electrodes are regularly proposed, which are positioned in the exhaust pipe.
- a central spray electrode which runs approximately centrally through the exhaust pipe, and a surrounding jacket surface of the exhaust pipe as a collector electrode used to form a capacitor.
- the spray electrode and the collector electrode an electric field is formed transversely to the flow direction of the exhaust gas, wherein the spray electrode, for example, can be operated with a high voltage which is in the range of about 15 kV.
- corona discharges can be formed by which the particles flowing with the exhaust gas through the electric field are charged in a unipolar manner.
- the particles migrate to the collector electrode due to the electrostatic coulombic forces.
- the collector electrode for example, is designed as a wire grid.
- the attachment of particles takes place on the wire grid for the purpose of possibly combining the particles with other particles, so as to realize an agglomeration.
- the exhaust gas flowing through the grid then rips the larger particles with them and leads them to classical filter systems.
- the device according to the invention for treating exhaust gas containing soot particles comprises at least
- At least one ionization element for the ionization of soot particles at least one filter element, wherein an electrical potential can be applied to at least one section of the filter element,
- At least one flow guiding device which can influence a flow of the exhaust gas in such a way that deposition of the soot particles on at least the ionizing element or an electrical insulation of the filter element can be prevented or eliminated.
- the device proposed here may in particular be part of an exhaust system of a motor vehicle which has a diesel engine and is arranged in particular in an exhaust pipe of the exhaust system.
- the exhaust gas containing the soot particles flows through an ionization element comprising at least one electrode to which a high electric voltage between 3 kV [kilovolt] and 50 kV, preferably between 5 kV and 25 kV can be applied.
- the tension is So set or regulated or controlled so that it comes to a corona discharge between the electrode and a counter electrode.
- the ionization element can be formed as a simple spray electrode or rod electrode, but it is preferred that the ionization element comprises a honeycomb body with a plurality of channels through which at least one electrode is arranged at the inlet region or outlet region, which is oriented in or against the flow direction is.
- the honeycomb body may in particular, at least partially, preferably be formed entirely of an electrically conductive material, so that an electrical potential can be applied to the honeycomb body and thus simultaneously to the electrodes.
- the at least one ionization element may have an outer tube and an inner tube arranged concentrically therewith, which form a gap traversed by the exhaust gas, wherein at least one annular electrode having a plurality of electrode tips protruding radially into the intermediate space is arranged on the inner tube.
- the at least one filter element is preferably designed as a surface separator having a plurality of channels, which are permeable to the exhaust gas and extending between an inlet region and an outlet region.
- the at least one filter element is particularly preferably a so-called open bypass filter in which there are no completely closed flow channels. Rather, the filter element is formed with a metallic fleece and metallic corrugated layers in which openings, guide structures, etc. are provided.
- the guide structures form flow bottlenecks in the flow passages, so that the residence time or impact probability for soot particles in the interior of the filter element is increased.
- the at least one flow-guiding device is arranged in the flow direction of the exhaust gas in front of the at least one ionization element or in front of the at least one filter element.
- the flow-guiding device comprises elements which deflect at least one (spatially limited) part of the exhaust gas, in particular in that a part of the exhaust gas flows around the flow-conducting device at least in sections, so that the deflection is influenced only by the shape of the flow-guiding device.
- the diversion of the partial exhaust gas flow takes place in such a way that soot particles either do not reach the ionization element (and in particular an electrical insulation of the ionization element) or the electrical insulation of the filter element, or hit it in such a way that the exhaust gas flow acts there in that an accumulation of the soot particles is not possible.
- the avoidance of a soot layer on the electrical insulation and / or the ionization element also causes the formation of a short circuit between the ionizing element and / or the filter element with the exhaust pipe prevented.
- the flow guiding device comprises at least one element of the following group:
- Under flow rectifier is a device to understand that at least partially reduces the turbulence in a flow or the exhaust flow laminarized and thus produces a more uniform velocity distribution of the exhaust gas over the cross section of the exhaust pipe. This can be done, for example, by a honeycomb body with a plurality of channels through which the exhaust gas can flow.
- the flow-guiding device is adjustable.
- the flow direction of a part of the exhaust gas leaving the flow-guiding device can be changed.
- the flow-guiding device is adjusted such that alternating regions of the ionization element or the filter element are flowed through by the exhaust gas, whereby deposition of soot particles on the ionization element or the electrical insulation is prevented or entrained soot particles and thus entrained be eliminated.
- the Strömungsleit In order to prevent deposition of the soot particles on the ionizing element or the electrical insulation of the filter element, the Strömungsleit adopted advantageously forms a flow-through diameter, which is smaller, preferably at least 10% smaller, more preferably at least 25% smaller than a permeable diameter of in Flow direction downstream ionizing element or filter element. In this way, the exhaust gas does not reach the ionizing element or the electrical element surrounding the filter element. see insulation. A deposition of the soot particles thus does not take place. In particular, in the case of a deflection of the soot particles by the electric field of the ionization element, the charged soot particles can not reach the ionization element and / or the electrical insulation of the filter element.
- the at least one flow-guiding device contains a catalytic reactor. In this way, the exhaust gas flowing past the flow-guiding device can be catalytically converted.
- the at least one flow guide is attached directly to an exhaust pipe, so that can be dispensed with further fastening elements for the flow guide.
- a further development of the invention provides that the at least one flow guide forms a flow shadow in the region of the electrical insulation, which also prevents deposition of the soot particles at least on the ionization element or the electrical insulation of the filter element.
- the flow guide is thus arranged in the exhaust gas flow, that the exhaust gas does not flow through the ionization element or the electrical insulation of the filter element.
- the at least one flow guide device form a concentrated flow in the area of the electrical insulation with an increased exhaust gas velocity.
- the exhaust gas velocity is thus increased in relation to the average exhaust gas velocity or the exhaust gas velocity over the cross section of the exhaust gas line without the flow guiding device.
- This pulse increase of the exhaust gas ensures that already deposited particles at least from the ionizing element or the electrical insulation can be eliminated and located in the exhaust particles can not accumulate.
- a device in which the flow guiding device is arranged upstream of the ionization element, and the flow guiding device has a flow-through region which is dimensioned so that ionized soot particles in the exhaust gas at least do not flow from an electric field generated by the ionizing element reach a surface of the ionization element or the electrical insulation of the filter element.
- This embodiment is particularly preferably combined with an ionization element in which the outer tube and the inner tube arranged concentrically therewith form a gap through which the exhaust gas can pass, wherein at least one annular electrode with a plurality of electrode tips protruding radially into the intermediate space is arranged on the inner tube on the outer tube.
- a flow obstacle is arranged radially starting from at least the outer tube or the inner tube, whose radial extent is selected as a function of a length of the electric field of the ionization element in the flow direction, the strength of the electric field and the exhaust gas velocity, that ionized soot particles at least do not reach the surface of the ionization element or the electrical insulation of the filter element during operation.
- the main flow of the exhaust gas is therefore limited to a limited part of the gap, with the walls of the ionizing element forms only a small flow of exhaust gas.
- Fig. 1 an embodiment of the device according to the invention
- Fig. 2 a further embodiment of the device according to the invention
- Fig. 3 yet another embodiment of the invention
- FIG. 1 shows schematically a cross section through an apparatus 1 according to the invention in an exhaust pipe 16.
- an ionization element 3 and a filter device 4 are arranged behind a flow guiding device 8.
- the flow guiding device 8 comprises a deflecting plate 11, which is fastened to the exhaust gas line 16 via fastening elements (not shown).
- the ionization element 3 has an electrically conductive honeycomb body 17, which is connected to the exhaust gas line 16 via a first electrical insulation 9.1.
- a plurality of electrodes 14 are arranged, which can be acted upon by a first electrical connection 13.1 with an electrical voltage.
- the filter element 4 has a plurality of channels 5 through which the exhaust gas can flow and which extend between an inlet region 6 and an outlet region 7.
- the filter element 4 is insulated from the exhaust pipe 16 with a second electrical insulation 9.2.
- the filter element 4 can be impacted by a second electrical connection 13.2 with an electrical voltage.
- the exhaust gas containing soot particles 2 flows toward the ionization element 3 and is at least partially deflected by the deflecting plate 11.
- the baffle 11 a portion of the exhaust gas is accelerated and hits at an increased speed on the first electrical insulation 9.1, whereby the soot particles 2 can not settle on the first electrical insulation 9.1 or already released on the first electrical insulation 9.1 settled particles become.
- the exhaust gas also flows through the honeycomb body 17 of the ionization element 3, wherein the flow is at least partially laminarized.
- the soot particles 2 are ionized in a corona discharge between the electrodes 14 and the filter element 4.
- the charged soot particles 2 are accelerated toward the filter element 4 and deposited therein due to their charge at a higher deposition rate.
- the flow guide 8 is designed as a flow rectifier 10.
- the flow rectifier 10 has a flow-through diameter 12 which is smaller than a flow-through diameter of the downstream ionization element 3.
- the exhaust gas flow is at least partially laminarized and reduced to the diameter 12 of the flow rectifier 10 through which it can flow. With sufficient difference in the diameters 12 of the flow rectifier and the ionizing element 3 is thus achieved that the soot particles 2 in the exhaust gas not see the first electrical see 9.1 of the ionization element 3. A deposit on the electrical insulation 9.1 is thus avoided.
- the flow guide device 8 has a honeycomb body 17, which holds a counterelectrode 22 of the ionization element 3.
- the honeycomb body 17 has in an outer and an inner region closed channels 18, which with a radial extension 20 a Prevent flow through the honeycomb body 17 in these areas. Thus, a flow-through region 19 of the honeycomb body 17 is formed.
- the ionization element 3 has an annular electrode 14 assigned to the exhaust gas line 16 with a multiplicity of electrode tips. Centrally in the exhaust pipe 16, a tubular counter electrode 22 is arranged, which is held by the honeycomb body and possibly isolated from this. Thus, over a length 21, an electric field may be formed between the annular electrode 14 and the tubular counter electrode 22.
- the radial extent 20 of the closed channels 18 is selected so that ionized soot particles 2 can not be distracted so far from the electric field present between the annular electrode 14 and the counterelectrode 22 that they can reach a surface of the ionization element 3.
- the size of the radial extent 20 thus depends essentially on the length 21, the electric field strength and the exhaust gas velocity.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Electrostatic Separation (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010045508A DE102010045508A1 (de) | 2010-09-15 | 2010-09-15 | Vorrichtung zur Behandlung von Rußpartikel enthaltendem Abgas |
PCT/EP2011/065886 WO2012035035A1 (de) | 2010-09-15 | 2011-09-13 | VORRICHTUNG ZUR BEHANDLUNG VON RUßPARTIKEL ENTHALTENDEM ABGAS |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2616646A1 true EP2616646A1 (de) | 2013-07-24 |
EP2616646B1 EP2616646B1 (de) | 2016-07-13 |
Family
ID=44799995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11769804.3A Active EP2616646B1 (de) | 2010-09-15 | 2011-09-13 | VORRICHTUNG ZUR BEHANDLUNG VON RUßPARTIKEL ENTHALTENDEM ABGAS |
Country Status (8)
Country | Link |
---|---|
US (1) | US8906315B2 (de) |
EP (1) | EP2616646B1 (de) |
JP (1) | JP5883007B2 (de) |
KR (1) | KR101503619B1 (de) |
CN (1) | CN103119257B (de) |
DE (1) | DE102010045508A1 (de) |
RU (1) | RU2538217C2 (de) |
WO (1) | WO2012035035A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103557054A (zh) * | 2013-11-06 | 2014-02-05 | 苏州佑瑞检测技术有限公司 | 一种汽车尾气循环净化装置 |
CN104324809A (zh) * | 2014-09-11 | 2015-02-04 | 上海龙净环保科技工程有限公司 | 一种垂直流湿式电除尘器导流与阻流耦合结构 |
EP3056364B1 (de) * | 2015-02-11 | 2020-05-20 | CabinAir Sweden AB | Fahrzeug mit ionisationseinheit zur reinigung der luft in einer kabine |
CN104847452B (zh) * | 2015-05-14 | 2017-11-03 | 哈尔滨工业大学 | 等离子体与静电吸附耦合的汽车尾气净化器及净化方法 |
RU2645173C1 (ru) * | 2016-12-26 | 2018-02-16 | Акционерное общество "Лётно-исследовательский институт имени М.М. Громова" | Способ определения содержания частиц сажи в выхлопной струе авиационного газотурбинного двигателя в полёте |
JP6579150B2 (ja) * | 2017-04-25 | 2019-09-25 | トヨタ自動車株式会社 | 排ガス浄化装置 |
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JPS53115978A (en) * | 1977-03-21 | 1978-10-09 | Shiyunji Matsumoto | Electrostatic filter |
JPS5788213A (en) * | 1980-11-21 | 1982-06-02 | Nippon Soken Inc | Carbon particle purifying device |
HU182826B (en) * | 1981-12-07 | 1984-03-28 | Csepeli Autogyar | Method and apparatus for decreasing the effect of environmental pollution of exhaust gases |
DE3323926C2 (de) * | 1983-07-02 | 1986-09-18 | Robert Bosch Gmbh, 7000 Stuttgart | Vorrichtung zum Reinigen von Gasen |
DE3500373A1 (de) * | 1985-01-08 | 1986-07-10 | Robert Bosch Gmbh, 7000 Stuttgart | Vorrichtung zum entfernen von festkoerperpartikeln, insbesondere von russteilchen aus dem abgas von brennkraftmaschinen |
US5121601A (en) * | 1986-10-21 | 1992-06-16 | Kammel Refaat A | Diesel engine exhaust oxidizer |
JPH05269387A (ja) * | 1992-03-26 | 1993-10-19 | Nissan Motor Co Ltd | 排気浄化用触媒コンバータ装置 |
CN2221657Y (zh) * | 1995-03-21 | 1996-03-06 | 淄博电子电器厂 | 汽车、摩托车尾气净化器 |
JP2698804B2 (ja) * | 1995-10-24 | 1998-01-19 | 株式会社オーデン | 電気的制御によるディーゼルエンジンの排気微粒子捕集装置 |
JP3004938B2 (ja) | 1997-03-07 | 2000-01-31 | 株式会社オーデン | 電気集塵装置及びその製造方法 |
FR2798303B1 (fr) * | 1999-09-14 | 2001-11-09 | Daniel Teboul | Dispositif de traitement d'un milieu gazeux, en particulier des gaz d'echappement d'un moteur a combustion interne, et vehicule equipe d'un tel dispositif |
DE10031200A1 (de) | 2000-06-27 | 2002-01-17 | Emitec Emissionstechnologie | Partikelfalle zum Abscheiden von Partikeln aus dem Strom eines Fluids, Verfahren zum Abscheiden von Partikeln aus dem Strom eines Fluids und Verwendung einer Partikelfalle |
JP4074997B2 (ja) | 2003-09-24 | 2008-04-16 | トヨタ自動車株式会社 | 排ガス浄化装置 |
JP4332847B2 (ja) * | 2003-10-20 | 2009-09-16 | トヨタ自動車株式会社 | 排ガス浄化装置 |
DE102004001417A1 (de) | 2004-01-09 | 2005-08-04 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Partikelfilter umfassend eine metallische Faserlage |
JP2005232970A (ja) * | 2004-02-17 | 2005-09-02 | Isuzu Motors Ltd | 排気ガス浄化装置 |
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DE102005029338A1 (de) | 2005-06-24 | 2007-02-08 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Verfahren zum Betrieb einer Partikelfalle sowie Vorrichtung zur Durchführung des Verfahrens |
DE102006026324A1 (de) | 2006-06-02 | 2007-12-06 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Nebenstromfilter mit verbessertem Filterwirkungsgrad |
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DE102006057705B3 (de) * | 2006-12-07 | 2008-03-27 | Robert Bosch Gmbh | Optimierter elektrostatischer Abscheider |
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DE102009041092A1 (de) * | 2009-09-14 | 2011-03-24 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Abgasbehandlungsvorrichtung mit zwei Wabenkörpern zur Erzeugung eines elektrischen Potentials |
-
2010
- 2010-09-15 DE DE102010045508A patent/DE102010045508A1/de not_active Withdrawn
-
2011
- 2011-09-13 CN CN201180044275.XA patent/CN103119257B/zh active Active
- 2011-09-13 EP EP11769804.3A patent/EP2616646B1/de active Active
- 2011-09-13 JP JP2013528644A patent/JP5883007B2/ja active Active
- 2011-09-13 WO PCT/EP2011/065886 patent/WO2012035035A1/de active Application Filing
- 2011-09-13 RU RU2013116733/06A patent/RU2538217C2/ru active
- 2011-09-13 KR KR1020137009237A patent/KR101503619B1/ko active IP Right Grant
-
2013
- 2013-03-15 US US13/833,673 patent/US8906315B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2012035035A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP5883007B2 (ja) | 2016-03-09 |
CN103119257A (zh) | 2013-05-22 |
JP2013540937A (ja) | 2013-11-07 |
EP2616646B1 (de) | 2016-07-13 |
WO2012035035A1 (de) | 2012-03-22 |
US8906315B2 (en) | 2014-12-09 |
RU2538217C2 (ru) | 2015-01-10 |
KR20130051011A (ko) | 2013-05-16 |
CN103119257B (zh) | 2015-06-17 |
US20130216440A1 (en) | 2013-08-22 |
KR101503619B1 (ko) | 2015-03-18 |
RU2013116733A (ru) | 2014-10-20 |
DE102010045508A1 (de) | 2012-03-15 |
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