EP0658685A2 - Dispositif pour séparer de particules de suie contenues dans le gaz d'échappement d'un moteur à combustion interne - Google Patents

Dispositif pour séparer de particules de suie contenues dans le gaz d'échappement d'un moteur à combustion interne Download PDF

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Publication number
EP0658685A2
EP0658685A2 EP94890211A EP94890211A EP0658685A2 EP 0658685 A2 EP0658685 A2 EP 0658685A2 EP 94890211 A EP94890211 A EP 94890211A EP 94890211 A EP94890211 A EP 94890211A EP 0658685 A2 EP0658685 A2 EP 0658685A2
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EP
European Patent Office
Prior art keywords
electrically conductive
layers
ceramic
flow
spacers
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
EP94890211A
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German (de)
English (en)
Other versions
EP0658685B1 (fr
EP0658685A3 (fr
Inventor
Carl Maria Dr. Fleck
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Individual
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Individual
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Publication date
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Publication of EP0658685A2 publication Critical patent/EP0658685A2/fr
Publication of EP0658685A3 publication Critical patent/EP0658685A3/fr
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Publication of EP0658685B1 publication Critical patent/EP0658685B1/fr
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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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/60—Use of special materials other than liquids
    • B03C3/62—Use of special materials other than liquids ceramics
    • 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
    • B03C3/08—Plant or installations having external electricity supply dry type characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
    • 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
    • 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
    • F01N3/022—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • 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
    • F01N3/027—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 electric or magnetic heating means
    • 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
    • F01N3/027—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 electric or magnetic heating means
    • F01N3/0275—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 electric or magnetic heating means using electric discharge means
    • 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
    • F01N2330/06—Ceramic, e.g. monoliths

Definitions

  • an electrostatic filter of the type mentioned at the outset was known from WO-A1-91 / 16528, in which a ceramic honeycomb body is provided which has through-passages through which the exhaust gas can flow and which are arranged one above the other in the manner of a brick wall.
  • electrodes are arranged on the outside of the filter and in the interior of a bore passing through it, through which the exhaust gases are supplied, a plurality of rows of channels being arranged between these electrodes. With such a filter, the production of the ceramic body is difficult.
  • the relatively small height of the channels through which the exhaust gas can flow in the region of the filter ensures that an essentially luminous flow is formed and therefore the soot particles accumulate and are oxidized by the radicals caused by the electric field.
  • Fig.1 An arrangement according to the invention of ceramic filter plates with series connection.
  • Fig. 2 An external series connection of the filter cells.
  • Fig. 6 Winding electrostatic precipitator in parallel.
  • the spacers 3 shows an electrical parallel connection of the flow channels 2 according to the invention.
  • the plates 1 structured on one side are arranged alternately with the spacers 3 upwards and downwards.
  • the electrodes 4 are connected in parallel and connected to one pole + a DC voltage source and all electrodes 5 to the second pole - the DC voltage source, which only has to deliver a relatively low voltage, since this only in order to train the required field strength in a position of Flow channels 2 must be sufficient.
  • FIG. 6 shows a winding electrostatic filter according to the invention consisting of two electrodes 4, 5, which are insulated from one another by steel foils, each with ceramic plasma coating 1 ′ on both sides and corresponding spacers 3 formed as ceramic balls, which have a diameter of approx. 2 mm and which are only due to the voltage or .
  • Deformation of the steel foils forming the electrodes 4, 5 are fixed.
  • the filter is wound in two layers from mutually insulated foils and therefore consists of two large flow channels 2 which are connected in parallel.
  • the ceramic coated steel foils are about 2mm apart and the tension between the metal foils serving as electrodes 4, 5 is approximately 300V.
  • the stack. consists of electrodes 4 and 5, plasma-coated on both sides, made of thin, heat-resistant steel plates with sufficient flexural strength to be able to find 3 ceramic plates 40 mm to 50 mm wide and 2 mm to 4 mm high as spacers, on the sides of the coated electrodes 4 and 5 are arranged and thus limit the flow channels 2 on both sides.
  • These electrodes 4 and 5 are held by corresponding steel pins 7 and alternately contacted on both sides of the flow channels by electrically conductive spacer rings 8 so that steel pins with different potential are preferably opposite one another.
  • the ceramic coating 1 'ends before the spacer rings 8 but only within the ceramic spacer 3.
  • the plasma coating 1 has at working temperatures a volume resistance of at least 105Ohm.cm2, preferably between 106Ohm.cm2 and 108Ohm.cm2.
  • Each of the two electrodes 4, 5 is clamped on both sides of the flow channel 2, so that it is possible to reduce the thickness of the electrodes to such an extent that they are stretched as thin foils through the steel pins 7 and must therefore maintain their intended mutual distances.
  • Flow channels 2 of this type can be stacked at any height and are particularly suitable for large-volume diesel internal combustion engines, but also for large machines with small plate spacings d, but at least compliance with the dimensional formula d [cm] 500 v [cm / sec] must be taken into account if v represents the average speed through the flow channels 2.
  • FIG. 8 shows an improvement of the device shown in FIG. 7 by the integration of the ionization part in the Separation part of the diesel electrostatic filter according to the invention.
  • the electrode edge leaned towards the gas flow is set back and at least one discharge wire 10 is welded on by spot welding 11 and the remaining lateral remnants of the electrode 4. This results in a concentration of the field on the wire surface and the associated stronger gas discharge leads to a higher charge of the soot particles flowing past.
  • the wire has a diameter between 50 microns and 300 microns and consists of a corrosion-resistant high-temperature alloy, a superalloy or tungsten and is preferably gold-plated or platinum-plated.
EP19940890211 1993-12-17 1994-12-14 Dispositif pour séparer de particules de suie contenues dans le gaz d'échappement d'un moteur à combustion interne Expired - Lifetime EP0658685B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2562/93 1993-12-17
AT256293A ATA256293A (de) 1993-12-17 1993-12-17 Elektrofilter zum abscheiden von russpartikeln aus den abgasen von brennkraftmaschinen

Publications (3)

Publication Number Publication Date
EP0658685A2 true EP0658685A2 (fr) 1995-06-21
EP0658685A3 EP0658685A3 (fr) 1995-12-20
EP0658685B1 EP0658685B1 (fr) 1997-10-22

Family

ID=3536494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940890211 Expired - Lifetime EP0658685B1 (fr) 1993-12-17 1994-12-14 Dispositif pour séparer de particules de suie contenues dans le gaz d'échappement d'un moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP0658685B1 (fr)
AT (1) ATA256293A (fr)
DE (1) DE59404421D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997002410A1 (fr) * 1995-07-06 1997-01-23 Fleck Carl M Filtre a suie, notamment pour gaz d'echappement de moteurs diesel
WO2001061161A1 (fr) * 2000-02-17 2001-08-23 Siemens Aktiengesellschaft Procede et dispositif pour reduire l'emission de fumee de moteurs diesel de maniere induite par plasma
FR2822893A1 (fr) * 2001-03-29 2002-10-04 Renault Systeme de traitement des gaz d'echappement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018143742A2 (fr) * 2017-02-03 2018-08-09 (주)동일기연 Dispositif de filtration
EP4067758A4 (fr) * 2019-11-25 2023-12-27 LG Electronics Inc. Conditionneur d'air

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB227022A (en) * 1924-04-03 1925-01-08 Int Precipitation Co Process of and apparatus for the electrical precipitation of suspended particles from gaseous fluids
EP0270990A1 (fr) * 1986-12-05 1988-06-15 IVECO FIAT S.p.A. Filtre régénérable pour gaz d'échappement de moteurs à combustion interne
US5009763A (en) * 1989-04-24 1991-04-23 Advanced Technologies Management, Inc. Honeycomb solid oxide electrolytic cell assembly and method
WO1991016528A1 (fr) * 1990-04-23 1991-10-31 Fleck Carl M Procede et dispositif pour l'epuration de particules contenues dans des gaz d'echappement
EP0504422A1 (fr) * 1990-10-05 1992-09-23 Nippondenso Co., Ltd. Filtre autochauffant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB227022A (en) * 1924-04-03 1925-01-08 Int Precipitation Co Process of and apparatus for the electrical precipitation of suspended particles from gaseous fluids
EP0270990A1 (fr) * 1986-12-05 1988-06-15 IVECO FIAT S.p.A. Filtre régénérable pour gaz d'échappement de moteurs à combustion interne
US5009763A (en) * 1989-04-24 1991-04-23 Advanced Technologies Management, Inc. Honeycomb solid oxide electrolytic cell assembly and method
WO1991016528A1 (fr) * 1990-04-23 1991-10-31 Fleck Carl M Procede et dispositif pour l'epuration de particules contenues dans des gaz d'echappement
EP0504422A1 (fr) * 1990-10-05 1992-09-23 Nippondenso Co., Ltd. Filtre autochauffant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997002410A1 (fr) * 1995-07-06 1997-01-23 Fleck Carl M Filtre a suie, notamment pour gaz d'echappement de moteurs diesel
WO2001061161A1 (fr) * 2000-02-17 2001-08-23 Siemens Aktiengesellschaft Procede et dispositif pour reduire l'emission de fumee de moteurs diesel de maniere induite par plasma
FR2822893A1 (fr) * 2001-03-29 2002-10-04 Renault Systeme de traitement des gaz d'echappement

Also Published As

Publication number Publication date
EP0658685B1 (fr) 1997-10-22
ATA256293A (de) 1998-10-15
DE59404421D1 (de) 1997-11-27
EP0658685A3 (fr) 1995-12-20

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