WO1996019645A1 - Exhaust cleaning device with a particle filter for carbon-containing combustion gases - Google Patents

Exhaust cleaning device with a particle filter for carbon-containing combustion gases Download PDF

Info

Publication number
WO1996019645A1
WO1996019645A1 PCT/DE1995/001727 DE9501727W WO9619645A1 WO 1996019645 A1 WO1996019645 A1 WO 1996019645A1 DE 9501727 W DE9501727 W DE 9501727W WO 9619645 A1 WO9619645 A1 WO 9619645A1
Authority
WO
WIPO (PCT)
Prior art keywords
particle filter
exhaust gas
copper
purification device
gas purification
Prior art date
Application number
PCT/DE1995/001727
Other languages
German (de)
French (fr)
Inventor
Wolfgang Pfister
Original Assignee
Firma J. Eberspächer
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 Firma J. Eberspächer filed Critical Firma J. Eberspächer
Publication of WO1996019645A1 publication Critical patent/WO1996019645A1/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2418Honeycomb filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66Regeneration of the filtering material or filter elements inside the filter
    • B01D46/80Chemical processes for the removal of the retained particles, e.g. by burning
    • B01D46/84Chemical processes for the removal of the retained particles, e.g. by burning by heating only
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021Exhaust 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
    • F01N3/022Exhaust 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
    • F01N3/0222Exhaust 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021Exhaust 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
    • F01N3/023Exhaust 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021Exhaust 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
    • F01N3/023Exhaust 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
    • F01N3/025Exhaust 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 fuel burner or by adding fuel to exhaust
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2250/00Combinations of different methods of purification
    • F01N2250/02Combinations of different methods of purification filtering and catalytic conversion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2330/00Structure of catalyst support or particle filter
    • F01N2330/06Ceramic, e.g. monoliths
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2470/00Structure or shape of gas passages, pipes or tubes
    • F01N2470/18Structure or shape of gas passages, pipes or tubes the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus

Definitions

  • the invention relates to an exhaust gas purification device with a particle filter for carbon-containing combustion gases according to the preamble of claim 1.
  • the particle filters are designed as candle wound filters, which act as depth filters. These wound filters consist of roughened ceramic yarn, which is wound on perforated support tubes. Here the particles settle in the felt spaces between the windings.
  • the copper is superficially applied to these wound filters.
  • the copper coating serves to reduce the ignition or combustion temperature for the carbon-containing particles which are soot in the exhaust gases of diesel engines.
  • the initiation of the reaction required for ignition takes place partly by injecting acetylacetone or similar reagents.
  • a disadvantage of the aforementioned particle filters is the possible detachment of fiber particles during long operating times. This danger exists to an increased degree in the case of ceramic fibers coated with copper, since the yarn strength is reduced by the coating. Dissolved copper-containing fiber particles get into the atmosphere with the exhaust gases and are therefore harmful to the environment. In addition, copper can be discharged to such an extent that the one to be caused by it Lowering the ignition and burn-off temperature is no longer guaranteed in full. This can have the consequence that copper also has to be added together with the above-mentioned activating agents.
  • Copper-coated ceramic yarn wound filters have so far been used without an additional energy dispenser, such as an additional burner, for example, to raise the temperature on the particle filter for the initiation of a soot burning process.
  • an additional energy dispenser such as an additional burner
  • the burn-off temperature is usually reduced to such an extent that a sufficient frequency of burning can take place solely because of the exhaust-gas temperatures prevailing in certain engine operating states.
  • high temperatures additionally increase the yarn resistance and thus the risk of coated fiber particles being discharged.
  • the invention is concerned with the problem of making an exhaust gas cleaning device equipped with a generic particle combustion filter more reliable and thus more environmentally friendly. Furthermore, the device should be able to be operated in an energy-saving manner.
  • the copper can expediently be applied in a manner known per se as a superficial layer or can also be added as a powder to the starting material for the porous bodies.
  • the material of the porous particle filter body according to the invention can be ceramic or sintered metal.
  • the filter body can also consist of pressed and / or sintered metal fibers. Cordierite can be used particularly advantageously as the starting material for a ceramic monolith. With these materials, the copper can simply be mixed into the raw materials. In this way, good integration, adhesive strength and distribution are achieved.
  • porous coated bodies such as monoliths in particular, enables a temporary connection of external energy sources to increase the temperatures at the filter, in order to reliably avoid soot clogging due to extremely long times with low exhaust gas temperatures when the engine operating conditions are unfavorable for burning to be able to.
  • An expedient external energy dispenser can, for example, be an additional burner for the exhaust gas device.
  • a small additional energy is sufficient to initiate a burn-off process. This in turn means the possibility of using small and energy-saving additional burners.
  • the exhaust gas end temperatures can thus also be kept relatively low when the particle filter is regenerated by burning off.
  • FIG. 1 a perspective view of a partially cut exhaust gas purification device with a particle filter.
  • a ceramic monolith coated with copper on the surface is located in a housing 1 as a particle filter 2.
  • An additional soot burner 5 is attached to the housing 1 upstream of the particle filter 2. This can be activated if, during extremely long operating times with exhaust gas temperatures that are too low for self-igniting combustion, the soot deposit exceeds a predetermined maximum dimension. This maximum dimension can be determined by ongoing measurements during engine operation using methods known per se for this purpose and can be used as a trigger for switching on the soot burner 5.
  • the monolith serving as the particle filter 2 is copper-coated or doped with copper and the burning temperature is therefore relatively low per se, a small-sized soot burner 5 with a very low burner output can be used. This is an essential advantage of the invention.

Abstract

The present invention relates to an exhaust gas cleaning device with a particle filter for carbon-containing exhaust gases, especially from internal combustion engines, which can be regenerated by the burning of separated carbon particles and has copper to reduce the burning reaction temperature. In order to make such an exhaust gas cleaning device more reliable and hence more environmentally friendly and power saving, according to the invention the particle filter (2) is a surface filter and consists of a compact one-piece porous material.

Description

Abgasreinigungsvorrichtung mit einem Partikelfilter für kohlenstoff altige Verbrennungsgase Exhaust gas purification device with a particle filter for carbon-old combustion gases
Die Erfindung betrifft eine Abgasreinigungsvorrichtung mit einem Partikelfilter für kohlenstoffhaltige Verbrennungsgase nach dem Oberbegriff des Anspruchs 1.The invention relates to an exhaust gas purification device with a particle filter for carbon-containing combustion gases according to the preamble of claim 1.
Bei bekannten Vorrichtungen dieser Art sind die Partikelfilter als Kerzen-Wickelfilter ausgebildet, die als Tiefenfilter wir¬ ken. Diese Wickelfilter bestehen aus aufgerauhtem Keramikgarn, das auf perforierten Tragrohren aufgewickelt ist. Hier lagern sich die Partikel in dem filzigen Zwischenräumen der Wicklung ab.In known devices of this type, the particle filters are designed as candle wound filters, which act as depth filters. These wound filters consist of roughened ceramic yarn, which is wound on perforated support tubes. Here the particles settle in the felt spaces between the windings.
Das Kupfer ist bei diesen Wickelfiltern oberflächlich aufge¬ bracht. Die Kupferbeschichtung dient zur Herabsetzung der Zünd¬ bzw. Verbrennungstemperatur für die kohlenstoffhaltigen Parti¬ kel, die bei Abgasen von Dieselmotoren Ruß sind. Die für ein Zünden erforderliche Reaktionseinleitung erfolgt teilweise durch ein Einspritzen von Acetylaceton oder ähnlichen Reagen¬ zien.The copper is superficially applied to these wound filters. The copper coating serves to reduce the ignition or combustion temperature for the carbon-containing particles which are soot in the exhaust gases of diesel engines. The initiation of the reaction required for ignition takes place partly by injecting acetylacetone or similar reagents.
Nachteilig bei den vorgenannten Partikelfiltern ist ein bei langen Betriebszeiten mögliches Ablösen von Faserteilchen. Diese Gefahr besteht in erhöhtem Maße bei mit Kupfer beschich¬ teten Keramikfasern, da die Garnfestigkeit durch die Beschich¬ tung herabgesetzt ist. Gelöste kupferhaltige Faserteilchen ge¬ langen mit den Abgasen in die Atmosphäre und sind damit um¬ weltschädlich. Hinzu kommt, daß Kupfer in einem solchen Maße ausgetragen werden kann, daß die von diesem zu bewirkende Absenkung der Zünd- und Abbrenntemperatur nicht mehr in vollem Maße sicher gewährleistet ist. Dies kann zur Folge haben, daß zusammen mit den einzuspritzenden obengenannten Aktivierungs¬ mitteln auch noch Kupfer nachgegeben werden muß.A disadvantage of the aforementioned particle filters is the possible detachment of fiber particles during long operating times. This danger exists to an increased degree in the case of ceramic fibers coated with copper, since the yarn strength is reduced by the coating. Dissolved copper-containing fiber particles get into the atmosphere with the exhaust gases and are therefore harmful to the environment. In addition, copper can be discharged to such an extent that the one to be caused by it Lowering the ignition and burn-off temperature is no longer guaranteed in full. This can have the consequence that copper also has to be added together with the above-mentioned activating agents.
Kupferbeschichtete Keramikgarn-Wickelfilter werden bisher je¬ weils ohne Zusatzenergiespender wie beisspielsweise einen Zu¬ satzbrenner zur Anhebung der Temperatur am Partikelfilter für die Einleitung eines Rußabbrennvorganges eingesetzt. Der Grund hierfür ist, daß zum einen durch Vorhandensein des Kupfers die Abbrenntemperatur gewöhnlich so weit heruntergesetzt ist, daß allein aufgrund der bei bestimmten Motorbetriebszuständen herr¬ schenden Abgastemperaturen ein ausreichend häufiges Abrennen erfolgen kann. Zum anderen erhöhen bei Keramikgarn-Wickelfil¬ tern hohe Temperaturen noch zusätzlich die Garnbeständigkeit und damit das Risiko des Austragens beschichteter Faserteil¬ chen.Copper-coated ceramic yarn wound filters have so far been used without an additional energy dispenser, such as an additional burner, for example, to raise the temperature on the particle filter for the initiation of a soot burning process. The reason for this is that, on the one hand, due to the presence of the copper, the burn-off temperature is usually reduced to such an extent that a sufficient frequency of burning can take place solely because of the exhaust-gas temperatures prevailing in certain engine operating states. On the other hand, in the case of ceramic yarn wound filters, high temperatures additionally increase the yarn resistance and thus the risk of coated fiber particles being discharged.
Hiervon ausgehend beschäftigt sich die Erfindung mit dem Pro¬ blem, eine mit einem gattungsgemäßen Partikel-Abbrennfilter be¬ stückte Abgasreinigungsvorrichtung funktionssicherer und damit umweltfreundlicher zu gestalten. Des weiteren soll die Vorrich¬ tung energiesparend betrieben werden können.Proceeding from this, the invention is concerned with the problem of making an exhaust gas cleaning device equipped with a generic particle combustion filter more reliable and thus more environmentally friendly. Furthermore, the device should be able to be operated in an energy-saving manner.
Eine Lösung hierzu zeigt eine Ausführung nach dem kennzeichnen¬ den Merkmal des Anspruchs 1 auf.A solution to this is shown by an embodiment according to the characterizing feature of claim 1.
Diese Lösung beruht auf dem Umstand, daß bei einem kompakten als Monolith ausgebildeten porösen Körper keine ernsthafte Ge¬ fahr des Austragens aufgetragenen Kupfers besteht.This solution is based on the fact that in the case of a compact porous body designed as a monolith, there is no serious risk of discharging the applied copper.
Das Kupfer kann zweckmäßigerweise in an sich bekannter Weise als oberflächliche Schicht aufgetragen sein oder auch dem Ausgangs¬ material für die porösen Körper als Pulver beigemischt sein. Das Material des erfindungsgemäßen porösen Partikelfilter- Körpers kann Keramik oder Sintermetall sein. Auch aus gepreßten und/oder gesinterten Metallfasern kann der Filterkörper beste¬ hen. Als Ausgangsmaterial für einen Keramik-Monolithen kann be¬ sonders vorteilhaft Kordierit verwendet werden. Das Kupfer kann bei diesen Materialien den Ausgangsstoffen jeweils einfach zugemischt werden. Auf diese Weise wird eine gute Einbindung, Haftfestigkeit und Verteilung erreicht.The copper can expediently be applied in a manner known per se as a superficial layer or can also be added as a powder to the starting material for the porous bodies. The material of the porous particle filter body according to the invention can be ceramic or sintered metal. The filter body can also consist of pressed and / or sintered metal fibers. Cordierite can be used particularly advantageously as the starting material for a ceramic monolith. With these materials, the copper can simply be mixed into the raw materials. In this way, good integration, adhesive strength and distribution are achieved.
Der Einsatz poröser beschichteter Körper, wie insbesondere Monolithen, ermöglicht über die vorgenannten Vorteile hinaus eine zeitweise Zuschaltung externer Energiespender zur Erhöhung der Temperaturen an dem Filter, um dadurch bei für ein Abbren¬ nen ungünstigen Motorbetriebsbedingungen eine Rußverstopfung wegen extrem langer Zeiten mit niedrigen Abgastemperaturen sicher vermeiden zu können. Ein zweckmäßiger externer Energie¬ spender kann beispielsweise ein Zusatzbrenner für die Abgasvor¬ richtung sein. In einem solchen Fall reicht wegen des die Ab- brenn-Anspringtemperatur niedrig haltenden Kupfergehaltes bereits eine geringe Zusatzenergie zur Einleitung eines Ab¬ brennvorganges aus. Dies bedeutet wiederum die Möglichkeit, kleine und energiesparende Zusatzbrenner einsetzen zu können. Auch die Abgasendtemperaturen können damit bei einer durch Abbrennen bewirkten Regeneration des Partikelfilters relativ niedrig gehalten werden.In addition to the aforementioned advantages, the use of porous coated bodies, such as monoliths in particular, enables a temporary connection of external energy sources to increase the temperatures at the filter, in order to reliably avoid soot clogging due to extremely long times with low exhaust gas temperatures when the engine operating conditions are unfavorable for burning to be able to. An expedient external energy dispenser can, for example, be an additional burner for the exhaust gas device. In such a case, because of the copper content keeping the burn-off start temperature low, a small additional energy is sufficient to initiate a burn-off process. This in turn means the possibility of using small and energy-saving additional burners. The exhaust gas end temperatures can thus also be kept relatively low when the particle filter is regenerated by burning off.
Ein Ausführungsbeispiel ist in der Zeichnung dargestellt.An embodiment is shown in the drawing.
Diese zeigtThis shows
eine perspektivische Darstellung einer teilweise aufgeschnittenen Abgasreinigungsvorrichtung mit einem Partikelfilter. Bei der dargestellten Abgasreinigungsvorrichtung befindet sich in einem Gehäuse 1 ein oberflächlich mit Kupfer beschichteter Keramik-Monolith als Partikelfilter 2. Das zu behandelnde Ab¬ gas, aus dem Rußpartikel abgeschieden und auf dem Partikelfil¬ ter 2 zu dessen Regeneration abgebrannt werden sollen, treten durch den Stutzen 3 in das Gehäuse 1 ein und verlassen dieses über den Stutzen 4.a perspective view of a partially cut exhaust gas purification device with a particle filter. In the illustrated exhaust gas purification device, a ceramic monolith coated with copper on the surface is located in a housing 1 as a particle filter 2. The exhaust gas to be treated, from which soot particles are to be separated and burned on the particle filter 2 for regeneration, passes through the A connector 3 in the housing 1 and leave this via the connector 4th
Ein Zusatz-Rußbrenner 5 ist an dem Gehäuse 1 stromauf vor dem Partikelfilter 2 angebracht. Dieser kann aktiviert werden, wenn bei extrem langen Betriebszeiten mit für eine selbstzündende Verbrennung zu niedrigen Abgastemperaturen die Rußablagerung ein vorgegebenes Maximalmaß überschreitet. Dieses Maximalmaß kann durch laufende Messungen während des Motorbetriebes mit hierfür an sich bekannten Methoden bestimmt und als Auslöser für das Einschalten des Rußbrenners 5 verwendet werden.An additional soot burner 5 is attached to the housing 1 upstream of the particle filter 2. This can be activated if, during extremely long operating times with exhaust gas temperatures that are too low for self-igniting combustion, the soot deposit exceeds a predetermined maximum dimension. This maximum dimension can be determined by ongoing measurements during engine operation using methods known per se for this purpose and can be used as a trigger for switching on the soot burner 5.
Da der als Partikelfilter 2 dienende Monolith kupferbeschichtet oder mit Kupfer dotiert ist und die Abbrenntemperatur damit an sich relativ niedrig liegt, kann ein klein bauender Rußbrenner 5 mit recht geringer Brennerleistung verwendet werden. Dies ist ein wesentlicher Vorteil der Erfindung. Since the monolith serving as the particle filter 2 is copper-coated or doped with copper and the burning temperature is therefore relatively low per se, a small-sized soot burner 5 with a very low burner output can be used. This is an essential advantage of the invention.

Claims

Patentansprüche claims
1. Abgasreinigungsvorrichtung mit einem Partikelfilter für kohlenstoffhaltige Verbrennungsgase von insbesondere Verbren¬ nungsmotoren, das durch Abbrennen abgeschiedener Kohlenstoff¬ partikel regenerierbar und zur Absenkung der Abbrennreaktions- temperatur mit Kupfer versehen ist, d a d u r c h g e k e n n z e i c h n e t, daß das Partikelfilter (2) ein Oberflächenfilter ist und aus einem kompakten einen Monolithen darstellenden porösen Material besteht.1. Exhaust gas purification device with a particle filter for carbon-containing combustion gases from combustion engines in particular, which can be regenerated by burning off deposited carbon particles and is provided with copper to lower the burning reaction temperature, characterized in that the particle filter (2) is a surface filter and consists of a compact is a porous material constituting monoliths.
2. Abgasreinigungsvorrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß das poröse Material des Partikelfilters (2) Keramik oder Sintermetall ist.2. Exhaust gas purification device according to claim 1, that the porous material of the particle filter (2) is ceramic or sintered metal.
3. . Abgasreinigungsvorrichtung nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t , das poröse Material des Partikelfilters mit Kupfer beschichtet ist.3.. Exhaust gas purification device according to claim 2, d a d u r c h g e k e n n z e i c h n e t, the porous material of the particle filter is coated with copper.
4. Abgasreinigungsvorrichtung nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t , daß das Kupfer dem Keramik- oder Sintermetall- Grundmaterial des Partikelfilters (2) pulverförmig beigemischt ist.4. exhaust gas purification device according to claim 2, d a d u r c h g e k e n e z e i c h n e t that the copper is mixed with the ceramic or sintered metal base material of the particle filter (2) in powder form.
5. Abgasreinigungsvorrichtung nach einem der vorhergehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , - 6 -5. Exhaust gas purification device according to one of the preceding claims, characterized in that - 6 -
daß die Abgasreinigungsanlage mit einer Zusatz-Energiequelle (Zusatz-Rußbrenner 5) zur Anhebung der an dem Partikelfilter (2) bzw. in dem dieses kontaktierenden Abgas herrschenden Tem¬ peratur auf einen vorgebbaren Abbrenn-Temperaturwert versehen ist. that the exhaust gas cleaning system is provided with an additional energy source (additional soot burner 5) to raise the temperature prevailing at the particle filter (2) or in the exhaust gas contacting it to a predeterminable combustion temperature value.
PCT/DE1995/001727 1994-12-20 1995-12-01 Exhaust cleaning device with a particle filter for carbon-containing combustion gases WO1996019645A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEG9420371.7U 1994-12-20
DE9420371U DE9420371U1 (en) 1994-12-20 1994-12-20 Exhaust gas purification device with a particle filter for carbon-containing combustion gases

Publications (1)

Publication Number Publication Date
WO1996019645A1 true WO1996019645A1 (en) 1996-06-27

Family

ID=6917660

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1995/001727 WO1996019645A1 (en) 1994-12-20 1995-12-01 Exhaust cleaning device with a particle filter for carbon-containing combustion gases

Country Status (2)

Country Link
DE (1) DE9420371U1 (en)
WO (1) WO1996019645A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7192796B2 (en) 2003-07-03 2007-03-20 Tessera Technologies Hungary Kft. Methods and apparatus for packaging integrated circuit devices
EP2730293A1 (en) * 2012-11-13 2014-05-14 Heyer Medical AG Gas filter with copper for removing bacteria and viruses from a gas volume

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63140810A (en) * 1986-12-04 1988-06-13 Cataler Kogyo Kk Particulate burning catalyst filter
EP0291704A1 (en) * 1987-05-16 1988-11-23 Dornier Gmbh Catalytic effective layer of filter material for Dieselsoot-filter
JPS6487816A (en) * 1987-09-29 1989-03-31 Matsushita Electric Ind Co Ltd Exhaust gas purification device for diesel
EP0336883A1 (en) * 1988-04-08 1989-10-11 Per Stobbe A method of filtering particles from a flue gas, a flue gas filter means and a vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63140810A (en) * 1986-12-04 1988-06-13 Cataler Kogyo Kk Particulate burning catalyst filter
EP0291704A1 (en) * 1987-05-16 1988-11-23 Dornier Gmbh Catalytic effective layer of filter material for Dieselsoot-filter
JPS6487816A (en) * 1987-09-29 1989-03-31 Matsushita Electric Ind Co Ltd Exhaust gas purification device for diesel
EP0336883A1 (en) * 1988-04-08 1989-10-11 Per Stobbe A method of filtering particles from a flue gas, a flue gas filter means and a vehicle

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8919, Derwent World Patents Index; Class H06, AN 89-142155 *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 392 (M - 755) 19 October 1988 (1988-10-19) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7192796B2 (en) 2003-07-03 2007-03-20 Tessera Technologies Hungary Kft. Methods and apparatus for packaging integrated circuit devices
EP2730293A1 (en) * 2012-11-13 2014-05-14 Heyer Medical AG Gas filter with copper for removing bacteria and viruses from a gas volume

Also Published As

Publication number Publication date
DE9420371U1 (en) 1995-02-23

Similar Documents

Publication Publication Date Title
DE3842282C2 (en) Device for reducing the exhaust gas emission of a diesel engine
EP0154145B1 (en) Apparatus for cleaning diesel engine exhaust gases
EP0077524B1 (en) Process for lowering the ignition temperature of diesel-oil soot
DE60216774T2 (en) EMISSION CONTROL DEVICE
DE3232729C2 (en)
EP1227232A2 (en) Method for the regeneration of the catalytic activity of a catalyst, which is arranged in the exhaust pipe of a diesel engine and fulfills at least one oxidation function
DE10214343A1 (en) Filter for removing particulates from diesel engine exhaust gas has a catalytic coating comprising barium and magnesium compounds and a platinum-group metal
EP0807754A2 (en) Processing device for fuel derived from mineral oil or plants
EP0143956B1 (en) Pressure exchanger
DE4342652A1 (en) Honeycomb heater
AT501463A4 (en) Device for removing soot particles from exhaust gas of diesel motor vehicle, comprises catalyst element for partial oxidation of nitrogen monoxide to nitrogen dioxide and particle filter arranged below catalyst element
DE10048511A1 (en) Reduction of carbon monoxide, hydrocarbons and soot particles in lean exhaust gas from internal combustion engine, by using particle filter having catalytic coating of oxygen storage component(s) and platinum group metal(s)
EP0837980B1 (en) Device for purifying waste gas from a mixture-compressing internal combustion engine
EP1702147B1 (en) Method for operating a particle filter in the exhaust gas train of an internal combustion engine in a motor vehicle
EP1643092A1 (en) Vehicle with diesel engine with discontinuously regenerated exhaust gas purification system using fuel vapour injection
DE10242303A1 (en) Automotive diesel engine exhaust system has a soot particle filter module preceded by a NOx storage module
EP1250952A1 (en) Catalyst, filter and process for eliminating soot particles from Diesel exhaust gases
WO1996019645A1 (en) Exhaust cleaning device with a particle filter for carbon-containing combustion gases
DE60210631T2 (en) Method for regenerating an exhaust gas filter device for diesel engines and device therefor
DE69829633T2 (en) Exhaust emission control device and method for its production
DE4244511C2 (en) Device for the filtering removal of soot particles
CH677814A5 (en)
DE10343438B4 (en) Process for the production of ceramic particle filters and ceramic particle filters
EP3530339B1 (en) Particle filter for a combustion engine and method for producing same
CH678020A5 (en) Diesel motor catalyst filter - has channels with electric heating to give reaction temp. for catalyst action

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA CN CZ RU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase