EP2291339A1 - Dispositif filtrant servant à éliminer des particules présentes dans un flux gazeux - Google Patents

Dispositif filtrant servant à éliminer des particules présentes dans un flux gazeux

Info

Publication number
EP2291339A1
EP2291339A1 EP09753916A EP09753916A EP2291339A1 EP 2291339 A1 EP2291339 A1 EP 2291339A1 EP 09753916 A EP09753916 A EP 09753916A EP 09753916 A EP09753916 A EP 09753916A EP 2291339 A1 EP2291339 A1 EP 2291339A1
Authority
EP
European Patent Office
Prior art keywords
filter
filter device
filter element
mineral phase
gas stream
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Withdrawn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
EP09753916A
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 DE202008007224U external-priority patent/DE202008007224U1/de
Priority claimed from DE202008007223U external-priority patent/DE202008007223U1/de
Application filed by Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Publication of EP2291339A1 publication Critical patent/EP2291339A1/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Withdrawn legal-status Critical Current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

  • Filter device for removing particles from a gas stream
  • the invention generally relates to a filter device for the removal of
  • 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
  • Cordierite ceramic bodies are used in
  • Wand1filter usually have a cylindrical shape with two end faces and a lateral surface and are traversed by the first end face to the second end face of a plurality of lying substantially parallel to the cylinder axis flow channels for the exhaust gases of diesel engines.
  • 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 particulates present in the diesel exhaust may react with the cordierite and cause filter failures.
  • SiC silicon carbide
  • 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 ⁇
  • DE 10 2006 040 739 A1 discloses a filter for removing particles from a gas stream, in particular soot particles from an exhaust stream of an internal combustion engine, with a filter body of a ceramic filter substrate, wherein the filter substrate is coated with a porous protective layer of a coating material ,
  • the coating material is selected from the group consisting of aluminum oxides, aluminum hydroxide, titanium dioxide, silicon dioxide, zirconium oxide, cerium oxide, aluminum silicates, magnesium aluminum silicates, cordierite, mullite, 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
  • Filters for removing particles from a gas stream in particular
  • the filter consisting of aluminum titanate, to which a mineral phase zu ⁇
  • the single FIGURE shows a schematic representation of a Verbren ⁇
  • the figure shows a schematic representation of a Verbrennungskraft ⁇
  • combustion engine 10 is connected via an exhaust pipe 12, in which the
  • Filter device 14 is arranged. With the filter inlet
  • ter for example. In industrial plants, can be used.
  • the filter device 14 includes in the embodiment shown a zy ⁇
  • cylindrical housing 16 in which, for example, a rotationally symmetric, insge ⁇
  • the filter element 18 consists of A-
  • the feldspars used according to the invention offer more suitable material properties with regard to the thermal expansion behavior and the service life of the filter. At the same time, only very small amounts of glass phase are present in the microstructure ( ⁇ 5% by weight), which leads to a significantly improved thermal expansion behavior.
  • the heat capacity can be influenced by this combination of raw materials. From the feldspars used, it is possible to generate different mineral phases, which is not possible with the conventional barium, calcium and strontium feldspars.
  • feldspars are supplied as individual components (barium, calcium, strontium compounds, Al 2 O 3 and SiO 2 or other Al 2 O 3 or SiO 2 -containing compounds), usually as oxides or carbonates, and then react during sintering to the feldspars. In the case of the lithium, sodium and potassium feldspars according to the invention, this reaction does not take place from the individual components. It is possible to use feldspars directly or to use individual components which are sintered via the intermediate step of a glass phase to the required mineral phases.
  • This variant offers the possibility of selectively adjusting microstructures and material properties, since the ratio glass phase; resulting mineral phase, as well as mineral, mineral composition and thus properties such as thermal expansion in a range of 0-2 x 10 " 6 Km" 1 or the heat capacity can be changed.
  • Spinels improve the mechanical properties especially of the strength.
  • Aluminum titanate spinel materials are suitable for use at very high temperatures.
  • specific structural properties can be influenced.
  • Spinels have a high mechanical strength as materials.
  • suitable sintering conditions the spinel can increase the strength in other materials as an additive. This is done by adjusting the sintering conditions, which generates the growth of crystal needles. This in turn leads to a felting of the structure, which can increase the strength.
  • the filter element has the following composition: 35-90% by weight of aluminum titanate; 1-60 wt .-% mineral phase
  • the mineral phase consists of one or more of the following substances in the indicated proportions: 10-80% by weight of MuMt; 0-80% by weight of zirconium titanate; 0-50 wt% alkali feldspars and 0-80 wt% spinels.
  • the filter element may additionally have a glass phase in an amount of ⁇ 5 wt .-%
  • the feldspars present invention are selected from the group consisting of lithium, sodium, potassium feldspar.
  • the filter element may contain zirconium titanate.
  • the microstructure may also contain two or more mineral phases. In this case, can be dispensed with the glass phase.
  • mineral used which stabilize the entire ATi microstructure and at the same time have low thermal expansion, it can be completely dispensed with the glass phase, as this would be a disadvantage for the structure due to higher thermal expansion.
  • the filter device according to the invention consists of a temperature-resistant material and is therefore suitable for use as a diesel particulate filter. By selecting the mineral phase according to the invention, the material properties can be better influenced and the microstructural properties adjusted better.
  • the filter device according to the invention shows a good thermal shock resistance and a low thermal expansion.

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)
  • Compositions Of Oxide Ceramics (AREA)
  • Filtering Materials (AREA)
  • Glass Compositions (AREA)

Abstract

L'invention concerne un dispositif filtrant servant à éliminer des particules présentes dans un flux gazeux, notamment des particules présentes dans un flux de gaz d'échappement d'un moteur à combustion interne. Ce dispositif présente un élément filtrant constitué de titanate d'aluminium auquel on a ajouté une phase minérale constituée de feldspaths alcalins et de mullite et/ou de spinelles et/ou de titanate de zirconium.
EP09753916A 2008-05-29 2009-05-28 Dispositif filtrant servant à éliminer des particules présentes dans un flux gazeux Withdrawn EP2291339A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202008007224U DE202008007224U1 (de) 2008-05-29 2008-05-29 Filtereinrichtung zur Entfernung von Partikeln aus einem Gasstrom
DE202008007223U DE202008007223U1 (de) 2008-05-29 2008-05-29 Filtereinrichtung zur Entfernung von Partikeln aus einem Gasstrom
PCT/EP2009/056494 WO2009144261A1 (fr) 2008-05-29 2009-05-28 Dispositif filtrant servant à éliminer des particules présentes dans un flux gazeux

Publications (1)

Publication Number Publication Date
EP2291339A1 true EP2291339A1 (fr) 2011-03-09

Family

ID=40996596

Family Applications (3)

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

Family Applications Before (2)

Application Number Title Priority Date Filing Date
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

Country Status (2)

Country Link
EP (3) EP2300392A1 (fr)
WO (3) WO2009144261A1 (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
CN106458765A (zh) * 2014-03-28 2017-02-22 伊梅斯公司 陶瓷结构体

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006096634A (ja) * 2004-09-30 2006-04-13 Hitachi Metals Ltd 多孔質セラミック体

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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
DE68922193D1 (de) * 1988-12-02 1995-05-18 Ngk Insulators Ltd Keramische Stoffe für den Verbundguss und Verfahren zu ihrer Herstellung.
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
JP4750415B2 (ja) * 2002-07-31 2011-08-17 コーニング インコーポレイテッド チタン酸アルミニウムベースのセラミック製品
ATE430616T1 (de) * 2003-08-22 2009-05-15 Ohcera Co Ltd Wabenfilter zur reinigung von abgas und verfahren zu dessen herstellung
DE602005026114D1 (de) * 2004-04-21 2011-03-10 Dow Global Technologies Inc Verfahren zur erhöhung der stärke von porösen keramikkörpern
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
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
WO2009063997A1 (fr) * 2007-11-14 2009-05-22 Hitachi Metals, Ltd. Structure en nid d'abeilles en céramique à base de titanate d'aluminium, son procédé de production et poudre de matériau brut destinée à sa production

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2006096634A (ja) * 2004-09-30 2006-04-13 Hitachi Metals Ltd 多孔質セラミック体

Non-Patent Citations (1)

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Title
See also references of WO2009144261A1 *

Also Published As

Publication number Publication date
WO2009144262A1 (fr) 2009-12-03
EP2300392A1 (fr) 2011-03-30
WO2009144260A1 (fr) 2009-12-03
EP2291340A1 (fr) 2011-03-09
WO2009144261A1 (fr) 2009-12-03

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