WO2008136232A1 - ハニカムフィルタ - Google Patents

ハニカムフィルタ Download PDF

Info

Publication number
WO2008136232A1
WO2008136232A1 PCT/JP2008/056385 JP2008056385W WO2008136232A1 WO 2008136232 A1 WO2008136232 A1 WO 2008136232A1 JP 2008056385 W JP2008056385 W JP 2008056385W WO 2008136232 A1 WO2008136232 A1 WO 2008136232A1
Authority
WO
WIPO (PCT)
Prior art keywords
surface layer
less
cell wall
base material
pore diameter
Prior art date
Application number
PCT/JP2008/056385
Other languages
English (en)
French (fr)
Inventor
Yukio Mizuno
Naomi Noda
Toshio Yamada
Yukio Miyairi
Yukari Nakane
Yasushi Noguchi
Original Assignee
Ngk Insulators, Ltd.
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 Ngk Insulators, Ltd. filed Critical Ngk Insulators, Ltd.
Priority to EP08739498.7A priority Critical patent/EP2158956B1/en
Priority to JP2009512902A priority patent/JP5616059B2/ja
Publication of WO2008136232A1 publication Critical patent/WO2008136232A1/ja
Priority to US12/603,338 priority patent/US8444739B2/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
    • B01D46/2451Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
    • B01D46/247Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the cells
    • 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
    • B01D46/2425Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material
    • 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
    • B01D46/2425Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material
    • B01D46/2429Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material of the honeycomb walls or cells
    • 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
    • B01D46/2425Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material
    • B01D46/24491Porosity
    • 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
    • B01D46/2425Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material
    • B01D46/24492Pore diameter
    • 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
    • B01D46/2451Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
    • B01D46/2474Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the walls along the length of the honeycomb
    • 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
    • B01D46/2451Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
    • B01D46/2482Thickness, height, width, length or diameter
    • 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
    • B01D46/2498The honeycomb filter being defined by mathematical relationships
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2279/00Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/30Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for treatment of exhaust gases from IC Engines
    • 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

Abstract

 多孔質の隔壁母材と、その隔壁母材の流入側のみ又は流入側と流出側に設けられた表層と、を有する隔壁を備え、次の(1)~(5)を満たすハニカムフィルタを、DPFとして適用する。 (1)表層のピーク細孔径が隔壁母材の平均細孔径と同等又は小さく、表層の気孔率が隔壁母材の気孔率より大きい。 (2)表層は、ピーク細孔径が0.3μm以上20μm未満、気孔率が60%以上95%未満(測定方法は水銀圧入法)である。 (3)表層の厚さL1が、隔壁の厚さL2の、0.5%以上30%未満である。 (4)表層の濾過面積あたりの質量が、0.01mg/cm2以上6mg/cm2未満である。 (5)隔壁母材は、平均細孔径が10μm以上60μm未満、気孔率が40%以上65%未満である。  このようなDPFによれば、PM捕集開始直後の急激な圧力損失上昇がなく、PM堆積量と圧力損失との関係がヒステリシス特性を持たず、PMが堆積していない初期状態の圧力損失を低く抑えられる。
PCT/JP2008/056385 2007-04-27 2008-03-31 ハニカムフィルタ WO2008136232A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08739498.7A EP2158956B1 (en) 2007-04-27 2008-03-31 Honeycomb filter
JP2009512902A JP5616059B2 (ja) 2007-04-27 2008-03-31 ハニカムフィルタ
US12/603,338 US8444739B2 (en) 2007-04-27 2009-10-21 Honeycomb filter

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007-119198 2007-04-27
JP2007119198 2007-04-27
JP2008-041126 2008-02-22
JP2008041126 2008-02-22

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/603,338 Continuation US8444739B2 (en) 2007-04-27 2009-10-21 Honeycomb filter

Publications (1)

Publication Number Publication Date
WO2008136232A1 true WO2008136232A1 (ja) 2008-11-13

Family

ID=39943350

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/056385 WO2008136232A1 (ja) 2007-04-27 2008-03-31 ハニカムフィルタ

Country Status (4)

Country Link
US (1) US8444739B2 (ja)
EP (1) EP2158956B1 (ja)
JP (1) JP5616059B2 (ja)
WO (1) WO2008136232A1 (ja)

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EP2168662A1 (en) * 2008-09-03 2010-03-31 Ngk Insulators, Ltd. Catalyst loaded honeycomb filter for the purification of exhaust gas
US20100126133A1 (en) * 2008-11-26 2010-05-27 Curtis Robert Fekety Coated Particulate Filter And Method
JP2010156206A (ja) * 2008-12-26 2010-07-15 Sumitomo Osaka Cement Co Ltd 排ガス浄化フィルタ
JP2010155873A (ja) * 2008-12-26 2010-07-15 Sumitomo Osaka Cement Co Ltd 多孔質膜形成用塗料及び多孔質膜
JP2010167366A (ja) * 2009-01-22 2010-08-05 Ngk Insulators Ltd ハニカム触媒体
JP2010172825A (ja) * 2009-01-29 2010-08-12 Ngk Insulators Ltd ハニカム触媒体及びハニカム触媒体の製造方法
GB2468210A (en) * 2009-02-26 2010-09-01 Johnson Matthey Plc Filtering particulate matter from exhaust gas
JP2010188231A (ja) * 2009-02-16 2010-09-02 Ngk Insulators Ltd ハニカム構造体
JP2010227767A (ja) * 2009-03-26 2010-10-14 Ngk Insulators Ltd ハニカムフィルタ
US20100266461A1 (en) * 2009-04-16 2010-10-21 Massachusetts Institute Of Technology Method For Reducing Pressure Drop Through Filters, And Filter Exhibiting Reduced Pressure Drop
JP2010264359A (ja) * 2009-05-13 2010-11-25 Honda Motor Co Ltd 内燃機関の排気浄化装置
JP2010269269A (ja) * 2009-05-22 2010-12-02 Sumitomo Osaka Cement Co Ltd 多孔質膜形成用塗料及び多孔質膜
JP2010269270A (ja) * 2009-05-22 2010-12-02 Sumitomo Osaka Cement Co Ltd ハニカム構造型フィルタ
JP2010270257A (ja) * 2009-05-22 2010-12-02 Sumitomo Osaka Cement Co Ltd 多孔質膜形成用塗料及び多孔質膜
JP2010269268A (ja) * 2009-05-22 2010-12-02 Sumitomo Osaka Cement Co Ltd ハニカム構造型フィルタ
WO2011043434A1 (ja) * 2009-10-07 2011-04-14 日本碍子株式会社 ハニカム構造体
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JP2011147931A (ja) * 2009-12-25 2011-08-04 Ngk Insulators Ltd 表面捕集層付き担体及び触媒担持表面捕集層付き担体
JP2011189246A (ja) * 2010-03-12 2011-09-29 Ngk Insulators Ltd ハニカムフィルタ及びその製造方法
WO2011125766A1 (ja) 2010-03-31 2011-10-13 日本碍子株式会社 ハニカムフィルタ
WO2011125768A1 (ja) 2010-03-31 2011-10-13 日本碍子株式会社 ハニカムフィルタ
JP2011212508A (ja) * 2010-03-31 2011-10-27 Cataler Corp 排ガス浄化用触媒
US20120017554A1 (en) * 2009-03-31 2012-01-26 Ngk Insulators, Ltd. Honeycomb filter and method for manufacturing the same
JP2012075989A (ja) * 2010-09-30 2012-04-19 Ngk Insulators Ltd ハニカム構造体の製造方法
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EP2158956A1 (en) 2010-03-03
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US8444739B2 (en) 2013-05-21
US20100135866A1 (en) 2010-06-03
EP2158956A4 (en) 2013-07-03
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