WO2010092063A1 - Verfahren zur herstellung eines keramischen filterelements und filterelement - Google Patents
Verfahren zur herstellung eines keramischen filterelements und filterelement Download PDFInfo
- Publication number
- WO2010092063A1 WO2010092063A1 PCT/EP2010/051616 EP2010051616W WO2010092063A1 WO 2010092063 A1 WO2010092063 A1 WO 2010092063A1 EP 2010051616 W EP2010051616 W EP 2010051616W WO 2010092063 A1 WO2010092063 A1 WO 2010092063A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter element
- thickness
- filter
- ceramic
- different
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
- B01D46/525—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material which comprises flutes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0001—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/30—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for treatment of exhaust gases from IC Engines
Definitions
- the invention relates to a method for producing a ceramic filter element in an exhaust filter of an internal combustion engine.
- the invention relates to a ceramic diesel particulate filter.
- a ceramic filter element for an exhaust filter is described in an internal combustion engine, which is constructed of a corrugated, spirally wound filter web.
- heat-resistant, inorganic fibers are mixed with ceramic powder in an aqueous suspension and processed to form a web.
- Several superimposed webs are rolled up to the desired shape of the filter body, wherein honeycomb flow channels are formed between adjacent filter webs. The filter body is then fired at high temperature.
- WO 2006/005668 discloses a method for producing a ceramic filter element in an exhaust filter for internal combustion engines.
- a combustible, non-ceramic carrier web is first soaked with a ceramic slip and then burned out in the desired geometric shape until the carrier web is burned and a rigid filter body is formed.
- the wall thickness of the finished ceramic corresponds largely to the thickness of the carrier web.
- the porosity of the ceramic is influenced by the structure of the base paper.
- a disadvantage of the described method is that no filter elements with variable wall thickness, porosity and cell density can be produced.
- the invention relates in particular to the production of ceramic filter elements as diesel particulate filters and particulate filters for internal combustion engines and as ceramic supports for catalyst support.
- a non-ceramic medium e.g. Paper, especially those comprising cellulose, first shaped, e.g. in the form of a bobbin.
- the winding body may comprise a flat and a corrugated layer.
- This shape e.g. the bobbin, is then coated with a ceramic mass, e.g. soaked in a ceramic slip.
- the impregnated mold is then fired or sintered.
- organic components e.g. paper, e.g. Cellulosic fibers include, removed or converted.
- the ceramic filter element more flexible and better adaptable to applications and conditions of use.
- the invention provides a method for producing a ceramic filter element for an exhaust filter for internal combustion engines, in particular for diesel particulate filter, and / or as a catalyst support available.
- a base paper carrier web is impregnated with a ceramic slurry and then burned out.
- the base paper carrier web used can have a thickness and / or structure that vary over its width and / or length.
- the invention provides a ceramic filter element for exhaust filters in internal combustion engines, in particular diesel particulate filter, and / or as a catalyst support available, which has a different over its length and / or its diameter thickness and / or structure.
- the winding direction and / or perpendicular to the winding direction for example, thickness, porosity, pore distribution, fiber diameter distribution, fiber diameter average, fiber mixing ratio, eg synthetic fiber with cellulose and / or basis weight of one or more layers of base paper carrier web, for example, from a flat layer and a Welllage which can be connected to a semi-finished product can be varied.
- the winding direction corresponds to the finished filter element of the radial direction.
- Perpendicular to the winding direction corresponds to the finished filter element of the longitudinal axis of input side to output side.
- the paper thickness preferably varies between 0.2 and 0.5 mm, the porosity preferably between 50 and 100, the pore distribution may preferably be between 10 .mu.m and 100 .mu.m. Fiber diameter or their average are preferably above 500 microns.
- the basis weight preferably varies in the range of 40g / m 2 to 150g / m 2.
- the base paper carrier web wherein paper in this invention can stand for different paper-like media, in particular for non-ceramic, can e.g. in the winding direction in one or more base paper carrier web layers, e.g. a flat layer and / or a Welllage increase in thickness or decrease.
- a filter element with varied thickness of the filtration layer could be created.
- the thickness of the base paper carrier web is transferred to a corresponding thickness of the layer in the ceramic. If the thickness increases, the filter element would have thicker walls in the radially outer region than in the radially inner region.
- the thickness of the paper can also increase or decrease perpendicular to the winding direction.
- a filter element can be produced which, for example, has thicker walls on the input side than the output side.
- the thickness of the base paper carrier web also transfers their structural properties in properties of the ceramic body.
- a special base paper is now produced, which is already performed in the papermaking process with over the width or over the length of different thickness and / or structure or openness (open pores). After soaking with ceramic slurry, these different thicknesses and / or porosities are also imaged in the ceramic filter element. This is possible individually for the corrugated layer as well as for the top layer and allows a wide variety of variations.
- an alternative embodiment is that papers of different thickness and / or porosity are joined together, for example. By gluing, embossing, welding, sewing and the like. This could be done before the semifinished product or alternatively it could also different finished semi-finished prior to the winding process get connected.
- Another embodiment of the use of several semi-finished products provides that in addition different cell sizes and shapes could be combined in a component over the diameter. As already mentioned, the wall thickness and / or the porosity is varied either over the length of the component or over the diameter. A combination of both is possible.
- the solution according to the invention offers the following advantages: Optimization of the pressure loss Optimization of mechanical strength
- the catalytic coating is increasingly applied only in certain areas.
- the coatings have a strong influence on the pressure loss and the temperature distribution in the component.
- the component can be optimized for the coating.
- Fig. 1 shows the winding of one or more base paper carrier web layers, such as a semifinished product from flat and corrugated layer.
- Figures 2 a) to c) show different variations in the thickness of a base paper carrier ply
- F i g. 3 shows the variation in the density of a raw paper carrier web
- Fig. 1 shows in which directions variations of thickness and structure of base paper carrier web layers are possible.
- the corrugated layer and / or the flat layer can be varied in thickness and structure.
- A-A defines the direction perpendicular to the winding direction.
- B indicates the winding direction.
- the longitudinal axis of the filter element is indicated by (1).
- Fig. 2 shows in which form the thickness of a base paper carrier web and then the ceramic wall can be varied according to the sintering in the longitudinal direction of the filter element. A corresponding variation is also possible in direction B.
- Fig. 2c the realization of the thickness change by e.g. two layers of a paper indicated.
- Fig. 3 shows the variation of a structural parameter of a base paper carrier web which transfers accordingly to the ceramic.
- a variation of the area density is e.g. presented.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Catalysts (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201080007390.5A CN102316956B (zh) | 2009-02-10 | 2010-02-10 | 滤芯和陶瓷滤芯的生产方法 |
DE112010000723T DE112010000723A5 (de) | 2009-02-10 | 2010-02-10 | Verfahren zur Herstellung eines keramischen Filterelements und Filterelement |
US13/206,922 US8518143B2 (en) | 2004-07-10 | 2011-08-10 | Method for producing a ceramic filter element and filter element |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910008299 DE102009008299A1 (de) | 2009-02-10 | 2009-02-10 | Verfahren zur Herstellung eines keramischen Filterelements und Filterelement |
DE102009008299.9 | 2009-02-10 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/033,979 Continuation-In-Part US8557009B2 (en) | 2004-07-10 | 2011-02-24 | Ceramic filter element and method of manufacture |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/206,922 Continuation US8518143B2 (en) | 2004-07-10 | 2011-08-10 | Method for producing a ceramic filter element and filter element |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010092063A1 true WO2010092063A1 (de) | 2010-08-19 |
Family
ID=42060883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/051616 WO2010092063A1 (de) | 2004-07-10 | 2010-02-10 | Verfahren zur herstellung eines keramischen filterelements und filterelement |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN102316956B (de) |
DE (2) | DE102009008299A1 (de) |
WO (1) | WO2010092063A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2668147A1 (de) * | 2011-01-28 | 2013-12-04 | Mann + Hummel Gmbh | Keramischer körper aus einer aluminiumtitanatmischung |
DE102011109034A1 (de) | 2011-06-16 | 2012-12-20 | Mann + Hummel Gmbh | Keramischer Körper mit variabler Porosität und Verfahren zur Herstellung |
CN109745857B (zh) * | 2019-03-06 | 2024-04-16 | 中国石油大学(北京) | 催化剂载体、催化剂复合过滤元件及其制备方法和装置 |
CN112295312A (zh) * | 2019-07-25 | 2021-02-02 | 江苏正迈过滤技术有限公司 | 一种医用滤芯的生产方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63134020A (ja) | 1986-11-27 | 1988-06-06 | Matsushita Electric Ind Co Ltd | デイ−ゼルエンジン排ガスフイルタ |
WO2006005668A1 (de) | 2004-07-10 | 2006-01-19 | Mann+Hummel Gmbh | Verfahren zur herstellung eines keramischen filterelements |
DE102006056195A1 (de) * | 2006-11-27 | 2008-05-29 | Mann + Hummel Gmbh | Verfahren zur Herstellung eines keramischen Filterkörpers |
DE102007011569A1 (de) * | 2007-03-08 | 2008-09-11 | Mann + Hummel Gmbh | Dieselpartikelfilter mit einem keramischen Filterkörper |
EP2151271A1 (de) * | 2008-08-05 | 2010-02-10 | Mann+Hummel Gmbh | Verfahren zur Herstellung eines keramischen Filterelements |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IN189834B (de) * | 1997-04-18 | 2003-04-26 | Mann & Hummel Filter | |
US7959780B2 (en) * | 2004-07-26 | 2011-06-14 | Emporia Capital Funding Llc | Textured ion exchange membranes |
-
2009
- 2009-02-10 DE DE200910008299 patent/DE102009008299A1/de active Pending
-
2010
- 2010-02-10 DE DE112010000723T patent/DE112010000723A5/de not_active Withdrawn
- 2010-02-10 CN CN201080007390.5A patent/CN102316956B/zh not_active Expired - Fee Related
- 2010-02-10 WO PCT/EP2010/051616 patent/WO2010092063A1/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63134020A (ja) | 1986-11-27 | 1988-06-06 | Matsushita Electric Ind Co Ltd | デイ−ゼルエンジン排ガスフイルタ |
WO2006005668A1 (de) | 2004-07-10 | 2006-01-19 | Mann+Hummel Gmbh | Verfahren zur herstellung eines keramischen filterelements |
DE102006056195A1 (de) * | 2006-11-27 | 2008-05-29 | Mann + Hummel Gmbh | Verfahren zur Herstellung eines keramischen Filterkörpers |
DE102007011569A1 (de) * | 2007-03-08 | 2008-09-11 | Mann + Hummel Gmbh | Dieselpartikelfilter mit einem keramischen Filterkörper |
EP2151271A1 (de) * | 2008-08-05 | 2010-02-10 | Mann+Hummel Gmbh | Verfahren zur Herstellung eines keramischen Filterelements |
Also Published As
Publication number | Publication date |
---|---|
DE112010000723A5 (de) | 2012-06-14 |
DE102009008299A1 (de) | 2010-08-12 |
CN102316956B (zh) | 2016-02-24 |
CN102316956A (zh) | 2012-01-11 |
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