JP2022507550A - 水力直径が異なる一連の通路を有するハニカム体およびその製造方法 - Google Patents
水力直径が異なる一連の通路を有するハニカム体およびその製造方法 Download PDFInfo
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- JP2022507550A JP2022507550A JP2021526594A JP2021526594A JP2022507550A JP 2022507550 A JP2022507550 A JP 2022507550A JP 2021526594 A JP2021526594 A JP 2021526594A JP 2021526594 A JP2021526594 A JP 2021526594A JP 2022507550 A JP2022507550 A JP 2022507550A
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- passage
- hydraulic diameter
- passages
- honeycomb body
- honeycomb
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- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
-
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
Description
Tw≦0.20mm、
CD≧62通路毎cm2、
%P≧50%、および
4.0μm≦d50≦30.0μm、
をさらに有し、
ここで、Twは横方向壁厚であり、CDは通路密度であり、%Pは平均バルク気孔率であり、d50は中位孔径である、ハニカム体が提供される。
Tw≦0.20mm、
CD≧62通路毎cm2、
%P≧50%、および
4.0μm≦d50≦30.0μm、
をさらに有し、
ここで、Twは横方向壁厚であり、CDは通路密度であり、%Pは平均バルク気孔率であり、d50は中位孔径である、栓と;第1の通路および第2の通路の多孔質壁上に配置された触媒とを備えた触媒ハニカム体が提供される。いくつかの実施の形態において、第1の通路は第1の水力直径を有し得、第2の通路は第2の水力直径を有し得、第2の水力直径は第1の水力直径より小さい。
Tw≦0.20mm、
CD≧62通路毎cm2、
%P≧50%、および
4.0μm≦d50≦30.0μm、
をさらに有し、
ここで、Twは横方向壁厚であり、CDは通路密度であり、%Pは平均バルク気孔率であり、d50は中位孔径である、栓と;第1の通路および第2の通路内に配置された触媒とを備えた触媒ハニカム体が提供される。
Tw≦0.20mm、
CD≧62通路毎cm2、
%P≧50%、および
4.0μm≦d50≦30.0μm、
の性質を有するべきであり、
ここで、Twは横方向壁厚であり、CDは通路密度であり、%Pは平均バルク気孔率であり、d50は中位孔径である。
ハニカム体において、
通路密度(CD)で配列された第1の通路および第2の通路を形成する交差した多孔質壁のマトリクス、および
ある割合の第2の通路内に配置された栓、
を備え、
前記栓を有する第2の通路の割合がゼロ超かつ15%以下であり、
前記交差した多孔質壁が、横方向壁厚(Tw)、平均バルク気孔率(%P)、および中位孔径(d50)を有し、
Tw≦0.20mm、
CD≧62通路毎cm2、
%P≧50%、および
4.0μm≦d50≦30.0μm、
である、ハニカム体。
前記第1の通路が第1の水力直径を有し、前記第2の通路が第2の水力直径を有し、該第2の水力直径が該第1の水力直径より小さい、実施形態1に記載のハニカム体。
前記栓を有する前記第2の通路の割合が12%以下である、実施形態2に記載のハニカム体。
前記栓を有する前記第2の通路の割合が10%以下である、実施形態3に記載のハニカム体。
前記栓を有する前記第2の通路の割合が0.5%から15%に及ぶ、実施形態2に記載のハニカム体。
前記栓を有する前記第2の通路の割合が2%から15%に及ぶ、実施形態5に記載のハニカム体。
前記栓を有する前記第2の通路の割合が4%から15%に及ぶ、実施形態5に記載のハニカム体。
前記栓を有する前記第2の通路の割合が5%から15%に及ぶ、実施形態5に記載のハニカム体。
前記栓を有する前記第2の通路の割合が2%から12%に及ぶ、実施形態5に記載のハニカム体。
CD≧93通路毎cm2である、実施形態1に記載のハニカム体。
CD≧124通路毎cm2である、実施形態10に記載のハニカム体。
Tw≦0.15mmである、実施形態1に記載のハニカム体。
Tw≦0.10mmである、実施形態12に記載のハニカム体。
前記第1の通路が第1の水力直径を有し、前記第2の通路が第2の水力直径を有し、該第2の水力直径が該第1の水力直径より小さく、該第2の水力直径で割られた該第1の水力直径の比が1.2から2.0に及ぶ、実施形態1に記載のハニカム体。
前記第2の水力直径に対する前記第1の水力直径の比が1.3から1.6に及ぶ、実施形態14に記載のハニカム体。
前記ハニカム体が出口端を備え、前記第2の通路内の前記栓が、該出口端に近接して位置している、実施形態1に記載のハニカム体。
触媒ハニカム体において、
第1の通路および第2の通路を形成する交差した多孔質壁のマトリクスであって、各第1の通路が第1の水力直径を有し、各第2の通路が第2の水力直径を有し、該第2の水力直径が該第1の水力直径より小さい、多孔質壁のマトリクス、
出口端である割合の前記第2の通路内に配置された栓であって、該栓を有する該第2の通路の割合がゼロ超かつ15%以下である、栓、および
前記第1の通路および前記第2の通路の前記多孔質壁上に配置された触媒、
を備え、
前記交差した多孔質壁が、横方向壁厚(Tw)、通路密度(CD)、平均バルク気孔率(%P)、および中位孔径(d50)を有し、
Tw≦0.20mm、
CD≧62通路毎cm2、
%P≧50%、および
4.0μm≦d50≦30.0μm、
である、触媒ハニカム体。
触媒ハニカム体において、
第1の通路および第2の通路を形成する交差した多孔質壁のマトリクスであって、各第1の通路は第1の水力直径を有し、各第2の通路は第2の水力直径を有し、該第2の水力直径は該第1の水力直径より小さい、多孔質壁のマトリクス、
ある割合の前記第2の通路内に配置された栓であって、該栓を有する該第2の通路の割合が15%以下である、栓、および
前記第1の通路および前記第2の通路内に配置された触媒、
を備え、
前記交差した多孔質壁が、横方向壁厚(Tw)、通路密度(CD)、平均バルク気孔率(%P)、および中位孔径(d50)を有し、
Tw≦0.20mm、
CD≧62通路毎cm2、
%P≧50%、および
4.0μm≦d50≦30.0μm、
である、触媒ハニカム体。
ハニカム体を製造する方法において、
第1の通路および第2の通路を形成するように配列された複数の交差した多孔質壁から作られたハニカム体内の該第2の通路のある割合に施栓する工程であって、施栓された第2の通路の割合が、該第2の通路のゼロ超かつ15%以下である工程、
を有してなる方法。
前記第1の通路が第1の水力直径を有し、前記第2の通路が第2の水力直径を有し、該第2の水力直径が該第1の水力直径より小さい、実施形態19に記載の、ハニカム体を製造する方法。
前記通路内に触媒を施す工程をさらに含む、実施形態19に記載の、ハニカム体を製造する方法。
前記複数の交差した多孔質壁が、横方向壁厚(Tw)、通路密度(CD)、平均バルク気孔率(%P)、および中位孔径(d50)を有し、
Tw≦0.20mm、
CD≧62通路毎cm2、
%P≧50%、および
4.0μm≦d50≦30.0μm、
である、実施形態19に記載の、ハニカム体を製造する方法。
202、202A、202B、202C、302、302A、402、502、602、702、802、802 多孔質壁
204、204A、304、304A、404、504、604、704、804、904 第1の通路
205、505、605、705、805、905 栓
206、206A、206B、306、306A、406、506、606、706、806
906 第2の通路
210 部分的な第2の通路
310 部分的な第1の通路
508 第3の通路
510 第4の通路
Claims (5)
- ハニカム体において、
通路密度(CD)で配列された第1の通路および第2の通路を形成する交差した多孔質壁のマトリクス、および
ある割合の第2の通路内に配置された栓、
を備え、
前記栓を有する第2の通路の割合がゼロ超かつ15%以下であり、
前記交差した多孔質壁が、横方向壁厚(Tw)、平均バルク気孔率(%P)、および中位孔径(d50)を有し、
Tw≦0.20mm、
CD≧62通路毎cm2、
%P≧50%、および
4.0μm≦d50≦30.0μm、
である、ハニカム体。 - 前記第1の通路が第1の水力直径を有し、前記第2の通路が第2の水力直径を有し、該第2の水力直径が該第1の水力直径より小さい、請求項1記載のハニカム体。
- 前記栓を有する前記第2の通路の割合が0.5%から15%に及ぶ、請求項2記載のハニカム体。
- 触媒ハニカム体において、
第1の通路および第2の通路を形成する交差した多孔質壁のマトリクスであって、各第1の通路が第1の水力直径を有し、各第2の通路が第2の水力直径を有し、該第2の水力直径が該第1の水力直径より小さい、多孔質壁のマトリクス、
出口端である割合の前記第2の通路内に配置された栓であって、該栓を有する該第2の通路の割合がゼロ超かつ15%以下である、栓、および
前記第1の通路および前記第2の通路の前記多孔質壁上に配置された触媒、
を備え、
前記交差した多孔質壁が、横方向壁厚(Tw)、通路密度(CD)、平均バルク気孔率(%P)、および中位孔径(d50)を有し、
Tw≦0.20mm、
CD≧62通路毎cm2、
%P≧50%、および
4.0μm≦d50≦30.0μm、
である、触媒ハニカム体。 - ハニカム体を製造する方法において、
第1の通路および第2の通路を形成するように配列された複数の交差した多孔質壁から作られたハニカム体内の該第2の通路のある割合に施栓する工程であって、施栓された第2の通路の割合が、該第2の通路のゼロ超かつ15%以下である工程、
を有してなる方法。
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