EP2291340A1 - Dispositif de filtration pour éliminer des particules d'un courant gazeux - Google Patents

Dispositif de filtration pour éliminer des particules d'un courant gazeux

Info

Publication number
EP2291340A1
EP2291340A1 EP09753915A EP09753915A EP2291340A1 EP 2291340 A1 EP2291340 A1 EP 2291340A1 EP 09753915 A EP09753915 A EP 09753915A EP 09753915 A EP09753915 A EP 09753915A EP 2291340 A1 EP2291340 A1 EP 2291340A1
Authority
EP
European Patent Office
Prior art keywords
filter device
filter
aluminum titanate
glass
phase
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.)
Withdrawn
Application number
EP09753915A
Other languages
German (de)
English (en)
Inventor
Johannes Galle
Jochen Linhart
Kathrin Lichtenwalter
Sabine Otterbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mann and Hummel GmbH
Original Assignee
Mann and Hummel GmbH
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
Priority claimed from DE202008007223U external-priority patent/DE202008007223U1/de
Priority claimed from DE202008007224U external-priority patent/DE202008007224U1/de
Application filed by Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Publication of EP2291340A1 publication Critical patent/EP2291340A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0009—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing silica as main constituent
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C14/00—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
    • C03C14/004—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix the non-glass component being in the form of particles or flakes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
    • C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
    • C04B35/478—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on aluminium titanates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/0006—Honeycomb structures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00793—Uses not provided for elsewhere in C04B2111/00 as filters or diaphragms
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
    • C04B2235/3472—Alkali metal alumino-silicates other than clay, e.g. spodumene, alkali feldspars such as albite or orthoclase, micas such as muscovite, zeolites such as natrolite
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to a
  • Such filter device for removing soot particles from a Ab ⁇
  • Such a filter device based on aluminum titanate Such a filter device based on aluminum titanate.
  • Such filters are for example in the exhaust aftertreatment
  • the cross-sectional shape of the wall flow filter depends on the installation requirements of the motor vehicle. Widely used are filter bodies with a round, elliptical or triangular cross-section.
  • the flow channels usually have a square or hexagonal cross section and are arranged in a narrow grid over the entire cross section of the filter body.
  • a diesel particulate filter ideally combines a low coefficient of thermal expansion, low pressure drop, high strength, and low cost. Problems that may arise with the use of cordierite include both low volumetric heat capacity and low thermal conductivity, which can result in unacceptably high temperatures or temperature peaks during operation, as well as low thermal stability. Furthermore, inorganic particles present in the diesel exhaust may react with the cordierite and cause filter failures, especially at so-called hotspots.
  • SiC silicon carbide
  • the processing requirements i.e., high temperatures, inert
  • Ceramic filter elements based on aluminum have recently been used.
  • Main component of each of the honeycomb segments comprises at least one of
  • Silicon carbide silicon nitride, cordierite, alumina, molybdenum, zirconium di ⁇
  • the coating material is selected from the group consisting of aluminum oxides, aluminum hydroxide, titanium dioxide, silicon dioxide, zirconium dioxide, cerium oxide, aluminum silicates, magnesium aluminum silicates, cordierite, molybdenum, silicon carbide, aluminum titanate, zeolites, quartz, glasses, mixtures and mixed oxides thereof.
  • the invention is based on the object, a filter for the removal of
  • the present invention solves this problem by providing a Fil ⁇
  • the filter consists of aluminum titanate to which a glass ceramic part is added
  • the single FIGURE shows a schematic representation of a Verbren ⁇
  • the figure shows a schematic representation of an internal combustion engine with a filter device according to the invention.
  • the internal combustion engine 10 is connected via an exhaust pipe 12, in which the filter device 14 according to the invention is arranged.
  • the filter device 14 soot particles are filtered out of the exhaust gas flowing in the exhaust pipe 12. This is especially necessary for diesel engines to comply with legal requirements.
  • the filter device according to the invention is not limited to use as a DPF, but quite generally as a gas filter, in particular for hot gas applications, for example. In industrial plants, can be used.
  • the filter device 14 includes in the illustrated embodiment, a cylindrical housing 16, in which, for example. A rotationally symmetrical, also a total cylindrical filter element 18 is arranged. Other housing types are also possible.
  • the filter element 18 is made of aluminum titanate to which is added a mineral phase consisting of alkali feld late and / or spinels.
  • glass ceramic used according to the invention is not glasses in the actual sense, but crystalline materials.
  • glass ramik comes from the production technology, because the mineral phase crystallizes out of the glass.
  • Glass-ceramic is the term for polycrystalline solids produced by ceramization, i.e., controlled devitrification of glasses. They are formed by heat treatment of a suitable glass in which crystals are thereby produced.
  • the filter element according to the invention consists of aluminum titanate and a glass ceramic, wherein the glass ceramic is the main phase.
  • the content of glass ceramic is between 0 and 95 wt .-%
  • the proportion of aluminum titanate is ⁇ 50 wt .-% and can be between 0 and 50 wt .-%.
  • the glass ceramic is composed, for example, of various lithium, and / or potassium and / or sodium aluminosilicates (cf further below).
  • the filter element according to the invention also consists of aluminum titanate and a glass ceramic, but the aluminum titanate is the main phase.
  • the content of aluminum titanate is between 0 and 95 wt .-%, the proportion of glass ceramic is ⁇ 50 wt .-%.
  • the glass ceramic is composed, for example, of various lithium, and / or potassium and / or sodium aluminosilicates (cf, below).
  • the glass-ceramic preferably has the following composition: alkalis 0-20% by weight; Alkaline earths 0-5% by weight; SiO 2 30-50% by weight; Al 2 O 3 30-50% by weight; TO2 0-20% by weight; Other 0-20% by weight. This is precisely the difference with previously known compositions. While similar compositions are used to achieve glass phases, according to the invention mineral phases are purposefully crystallized out of the glass phase. In the microstructure, lithium, potassium or sodium aluminosilicates crystallized from the glass phase are present, but none or virtually no glass phase.
  • the proportion of aluminum titanate is ⁇ 50% by weight, in addition there is one phase of the glass-ceramic (between 30 and 90%, depending on the other phases) and another mineral phase of other chemical compositions, e.g. Alkalifields or spinels, in the structure before.
  • the glass ceramics used according to the invention have due to their different properties (structure, design, material, melting range) suitable material properties for diesel particulate filter in terms of thermal expansion behavior, good thermal cycling and filter life.
  • glass-ceramics are known to have an extremely small (in the range of ⁇ 0-1.5) thermal expansion coefficient.
  • the thermal expansion of such a structure can be adjusted specifically.
  • the proportion of glass phase and mineral phase can be changed. This is a high proportion, in particular> 20%, preferably> 40%, aimed at a crystalline phase, since this has a very low thermal expansion.
  • the structure has no or only very small amounts of glass phase, the thermal expansion behavior improves significantly.
  • the mineral phase is crystallized from the glass in the present invention and is not present as a glassy phase.
  • Due to the low aluminum titanate content of ⁇ 50 wt .-% in certain embodiments is basically no Aluminimtitanat- material, but a glass ceramic material before.
  • the clearest distinction is the structure, which differs significantly from the previously known and used structures. This is not an aluminum titanate material with glass phase content, but a glass-ceramic material in which a certain proportion of aluminum titanate crystals is located.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Structural Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Filtering Materials (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Glass Compositions (AREA)

Abstract

L'invention porte sur un dispositif de filtration pour éliminer des particules d'un courant gazeux, en particulier des particules d'un courant de gaz d'échappement d'un moteur à combustion interne, équipé d'un élément filtrant, l'élément filtrant étant constitué de titanate d'aluminium, auquel on ajoute une phase supplémentaire qui est constituée d'une vitrocéramique.
EP09753915A 2008-05-29 2009-05-28 Dispositif de filtration pour éliminer des particules d'un courant gazeux Withdrawn EP2291340A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202008007223U DE202008007223U1 (de) 2008-05-29 2008-05-29 Filtereinrichtung zur Entfernung von Partikeln aus einem Gasstrom
DE202008007224U DE202008007224U1 (de) 2008-05-29 2008-05-29 Filtereinrichtung zur Entfernung von Partikeln aus einem Gasstrom
PCT/EP2009/056493 WO2009144260A1 (fr) 2008-05-29 2009-05-28 Dispositif de filtration pour éliminer des particules d'un courant gazeux

Publications (1)

Publication Number Publication Date
EP2291340A1 true EP2291340A1 (fr) 2011-03-09

Family

ID=40996596

Family Applications (3)

Application Number Title Priority Date Filing Date
EP09753916A Withdrawn EP2291339A1 (fr) 2008-05-29 2009-05-28 Dispositif filtrant servant à éliminer des particules présentes dans un flux gazeux
EP09753917A Withdrawn EP2300392A1 (fr) 2008-05-29 2009-05-28 Dispositif filtrant servant à éliminer des particules présentes dans un flux gazeux
EP09753915A Withdrawn EP2291340A1 (fr) 2008-05-29 2009-05-28 Dispositif de filtration pour éliminer des particules d'un courant gazeux

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP09753916A Withdrawn EP2291339A1 (fr) 2008-05-29 2009-05-28 Dispositif filtrant servant à éliminer des particules présentes dans un flux gazeux
EP09753917A Withdrawn EP2300392A1 (fr) 2008-05-29 2009-05-28 Dispositif filtrant servant à éliminer des particules présentes dans un flux gazeux

Country Status (2)

Country Link
EP (3) EP2291339A1 (fr)
WO (3) WO2009144260A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9339791B2 (en) 2013-06-18 2016-05-17 Corning Incorporated Low thermal expansion aluminum titanate zirconium tin titanate ceramics
US20170183266A1 (en) * 2014-03-28 2017-06-29 Imerys Ceramic structures

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
JPS6221756A (ja) * 1985-07-22 1987-01-30 日本碍子株式会社 チタン酸アルミニウム―ムライト系セラミック体の製造方法
US4758542A (en) * 1987-02-13 1988-07-19 W. R. Grace & Co. Low thermal expansion ZrTiO4 --Al2 TiO5 --ZrO2 compositions
EP0372868B1 (fr) * 1988-12-02 1995-04-12 Ngk Insulators, Ltd. Matériaux céramiques utilisés dans la coulée pour pièces insérées ainsi que leurs procédés de production
JP2845046B2 (ja) * 1992-08-06 1999-01-13 株式会社ブリヂストン 溶融ステンレス合金用セラミックフィルター
JPH06305828A (ja) * 1993-04-28 1994-11-01 Kawasaki Refract Co Ltd チタン酸アルミニウム複合材料及びその製造方法
JP3096814B1 (ja) * 1999-11-08 2000-10-10 勉 福田 チタン酸アルミニウム焼結体の製造方法
JP3489030B1 (ja) * 2002-04-26 2004-01-19 勉 福田 チタン酸アルミニウム系焼結体の製造方法
KR100960769B1 (ko) * 2002-07-31 2010-06-01 코닝 인코포레이티드 알루미늄 티타네이트-계 세라믹 제품
JP5123483B2 (ja) * 2003-08-22 2013-01-23 オーセラ株式会社 排ガス浄化ハニカムフィルタの製造方法
US7381680B2 (en) * 2004-04-21 2008-06-03 Dow Global Technologies Inc. Method for increasing the strength of porous ceramic bodies and bodies made therefrom
US20060021308A1 (en) * 2004-07-29 2006-02-02 Merkel Gregory A Mullite-aluminum titanate body and method for making same
US7071135B2 (en) * 2004-09-29 2006-07-04 Corning Incorporated Ceramic body based on aluminum titanate and including a glass phase
JP2006096634A (ja) * 2004-09-30 2006-04-13 Hitachi Metals Ltd 多孔質セラミック体
US7959704B2 (en) * 2005-11-16 2011-06-14 Geo2 Technologies, Inc. Fibrous aluminum titanate substrates and methods of forming the same
WO2008027422A1 (fr) * 2006-08-29 2008-03-06 Corning Incorporated Structures céramiques résistantes aux chocs thermiques et à porosité élevée
CN101861288B (zh) * 2007-11-14 2013-05-22 日立金属株式会社 钛酸铝质陶瓷蜂窝状结构体、其制造方法及用于制造其的原料粉末

Non-Patent Citations (1)

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Title
See references of WO2009144260A1 *

Also Published As

Publication number Publication date
WO2009144262A1 (fr) 2009-12-03
WO2009144260A1 (fr) 2009-12-03
EP2291339A1 (fr) 2011-03-09
EP2300392A1 (fr) 2011-03-30
WO2009144261A1 (fr) 2009-12-03

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Inventor name: OTTERBACH, SABINE

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