WO2019128561A1 - Structure de bouchage de trou de céramique en nid d'abeilles - Google Patents

Structure de bouchage de trou de céramique en nid d'abeilles Download PDF

Info

Publication number
WO2019128561A1
WO2019128561A1 PCT/CN2018/116704 CN2018116704W WO2019128561A1 WO 2019128561 A1 WO2019128561 A1 WO 2019128561A1 CN 2018116704 W CN2018116704 W CN 2018116704W WO 2019128561 A1 WO2019128561 A1 WO 2019128561A1
Authority
WO
WIPO (PCT)
Prior art keywords
honeycomb ceramic
area
inlet
outlet
grid
Prior art date
Application number
PCT/CN2018/116704
Other languages
English (en)
Chinese (zh)
Inventor
宋锡滨
张兵
张曦
Original Assignee
山东国瓷功能材料股份有限公司
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 山东国瓷功能材料股份有限公司 filed Critical 山东国瓷功能材料股份有限公司
Publication of WO2019128561A1 publication Critical patent/WO2019128561A1/fr

Links

Images

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
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits

Definitions

  • the present invention relates to the field of honeycomb ceramic filters, and more particularly to a honeycomb ceramic plugging structure.
  • Honeycomb ceramic wall flow filters remove carbon black from gasoline and diesel exhaust.
  • the traditional filter design has an inlet and an outlet, as well as a porous wall that separates the inlet and outlet. These interconnected walls divide the filter into an inlet channel and an outlet channel. To capture carbon black and ash, the outlet end of the inlet channel is blocked and the inlet of the outlet channel is blocked. The structure in which such an interval is blocked is like a chess board.
  • This design forces the exhaust gas to pass through the porous wall, allowing the particulate matter to deposit in the channel or wall.
  • the inlet and outlet channels have a square cross section of the same area. When the amount of carbon black reaches a certain level, the regeneration process takes place and the carbon black is burned off.
  • the structure of the honeycomb is completed by extrusion molding.
  • the interconnected walls form the honeycomb ceramic structure with the outermost wall (also known as the skin).
  • the lattice channels formed by most of the interconnected walls are completely square.
  • some lattices formed by walls and skin are irregular structures, and these lattices are called incomplete lattices.
  • these incomplete grids can be based on the usual checkerboard caulking method.
  • Some problems are caused by the extrusion quality of the filter, some are caused by the laser drilling process, and so on. Therefore, it is necessary to manually detect and manually block the missing lattice after plugging.
  • N p The number of incomplete lattices near the skin
  • the object of the present invention is to provide a honeycomb ceramic plugging structure, which solves the problems in the prior art that the non-conforming emission requirements, the back pressure increase, and the thermal shock resistance are poor due to untreated or excessively processed incomplete lattices.
  • the present invention provides a honeycomb ceramic plugging structure, comprising: an inlet honeycomb ceramic surface and an outlet honeycomb ceramic surface, the inlet honeycomb ceramic surface and the outlet honeycomb ceramic surface including at the edge of the skin a first area lattice of S ⁇ 25% and a second area lattice of S>25%, all of the first area lattices are blocked at the inlet surface and/or the exit surface; wherein S is an incomplete lattice of a certain lattice The area accounts for the proportion of the entire grid area.
  • the first area grid is a grid of S ⁇ 12.5%
  • the second area grid is a grid of S>12.5%.
  • the inlet surface and the outlet surface of the second area lattice are both spaced apart.
  • the honeycomb ceramic plugging structure provided by the invention selectively blocks small incomplete lattices to meet discharge requirements, has small back pressure, good thermal shock resistance, low production cost and good filtering effect.
  • FIG. 1 is a partial structural view of an inlet honeycomb ceramic surface according to Embodiment 1 of the present invention.
  • FIG. 2 is a partial structural view of an outlet honeycomb ceramic surface according to Embodiment 1 of the present invention.
  • FIG. 3 is a partial structural view of an inlet honeycomb ceramic surface according to Embodiment 2 of the present invention.
  • FIG. 4 is a partial structural view of an outlet honeycomb ceramic surface according to Embodiment 2 of the present invention.
  • Figure 5 is a partial structural view of an inlet honeycomb ceramic surface according to Embodiment 3 of the present invention.
  • Figure 6 is a partial structural view showing the outlet honeycomb ceramic surface of Embodiment 4 of the present invention.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • Connected, or integrally connected can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • the present invention discloses a honeycomb ceramic plugging structure, comprising: an inlet honeycomb ceramic surface and an outlet honeycomb ceramic surface, and the imported honeycomb ceramic surface and the outlet honeycomb ceramic surface include S ⁇ 25% at the edge of the skin.
  • the present invention is directed to a honeycomb ceramic filter having a structure in which inlet and outlet passages are interconnected by porous walls.
  • the inlet passage is blocked at the outlet end and the outlet passage is blocked at the inlet end.
  • the exhaust gas can be forced to flow from the inlet passage, pass through the porous wall, and then flow out from the outlet passage.
  • this occlusion pattern (like a checkerboard structure) collects particulate matter within the channel.
  • the filter of the present invention has skin, which may be circular, elliptical, or other shape, and the filter is formed by an extrusion process.
  • the material of this filter is ceramic materials such as cordierite, silicon carbide, aluminum titanate, and mullite, but other extrudable materials such as glass, glass ceramics, plastics, and metals. .
  • the filter of the present invention has a porosity of between 20% and 70%.
  • the average pore size is between 5 and 50 microns, and more preferably between 10 and 30 microns.
  • Honeycomb ceramic filters have 50 to 350 grids per square inch and more preferably 100 to 300 grids.
  • the wall thickness can range from 0.05 to 0.5 mm, more preferably from 0.1 to 0.4 mm.
  • S is an indicator for measuring incomplete grids.
  • the incomplete grid is similar to the complete grid. Assuming that all incomplete grids are averaged by S values, then an incomplete grid with S equal to or less than 25% accounts for 25% of all incomplete grids. Filled in the usual checkerboard pattern, half of the grid is not blocked. From the present invention, these grids are filled, creating redundant plugging lattices. Assuming that these incomplete lattices have an S value of 25%, then all relative areas of these lattices (relative to the complete grid on the diameter line) are:
  • the first area lattice 1 is a lattice of S ⁇ 12.5%
  • the second area lattice 2 is a lattice of S>12.5%.
  • the inlet surface and the outlet surface of the second area lattice 2 are both spaced apart.
  • the S value can be further reduced to 12.5% without the problem of accuracy, as in the following Example 4 - Example 6.
  • the present embodiment is substantially the same as the first embodiment.
  • the same technical features as those of the first embodiment will not be described in the description of the present embodiment, and only the difference between the embodiment and the embodiment 1 will be described.
  • the first area lattice 1 of the present embodiment is a lattice with S less than or equal to 12.5%, and a second region lattice 2.
  • the inlet end of the first area lattice 1 is blocked and is not blocked at the outlet end.
  • the second area grid 2 is blocked by a conventional checkerboard type.
  • This embodiment is basically the same as the embodiment 2.
  • the same technical features as those of the embodiment 2 will not be described in the description of the embodiment, and only the difference between the embodiment and the embodiment 2 will be described.
  • the first area lattice 1 of the present embodiment is a lattice with S less than or equal to 12.5%, and a second region lattice 2.
  • the outlet end of the first area lattice 1 is blocked and is not blocked at the inlet end.
  • the second area grid 2 is blocked by a conventional checkerboard type.
  • This embodiment is basically the same as the embodiment 3.
  • the same technical features as those of the embodiment 3 will not be described in the description of the embodiment, and only the difference between the embodiment and the embodiment 3 will be described.
  • the first area lattice 1 of the present embodiment is a lattice with S less than or equal to 12.5%, and a second region lattice 2.
  • the inlet end and the outlet end of the first area lattice 1 are both blocked.
  • the second area grid 2 is blocked by a conventional checkerboard type.
  • the honeycomb ceramic plugging structure provided by the invention selectively blocks small incomplete lattices to meet discharge requirements, has small back pressure, good thermal shock resistance, low production cost and good filtering effect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Materials (AREA)

Abstract

L'invention concerne une structure de bouchage de trou de céramique en nid d'abeilles, comprenant : une surface en céramique en nid d'abeilles d'entrée et une surface en céramique en nid d'abeilles de sortie, la surface en céramique en nid d'abeilles d'entrée et la surface en céramique en nid d'abeilles de sortie comprenant des grilles de première zone (1) avec S ≤ 25 % et des grilles de deuxième zone (2) avec S > 25 % au niveau du bord de peau, toutes les grilles de première zone (1) étant bouchées au niveau de la surface d'entrée et/ou de la surface de sortie; S étant une proportion entre l'aire surfacique de grille incomplète et l'aire surfacique de grille complète dans une certaine grille. La structure de bouchage de trous de céramique en nid d'abeilles bouche de manière sélective de petites grilles incomplètes de manière à respecter les exigences de refoulement et présente les avantages d'une faible contrepression, d'une bonne résistance aux chocs thermiques, d'un faible coût de production et d'un bon effet de filtrage.
PCT/CN2018/116704 2017-12-27 2018-11-21 Structure de bouchage de trou de céramique en nid d'abeilles WO2019128561A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201711447285.3 2017-12-27
CN201711447285.3A CN108278142A (zh) 2017-12-27 2017-12-27 一种蜂窝陶瓷堵孔结构

Publications (1)

Publication Number Publication Date
WO2019128561A1 true WO2019128561A1 (fr) 2019-07-04

Family

ID=62802466

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/116704 WO2019128561A1 (fr) 2017-12-27 2018-11-21 Structure de bouchage de trou de céramique en nid d'abeilles

Country Status (2)

Country Link
CN (2) CN108278142A (fr)
WO (1) WO2019128561A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112778018A (zh) * 2020-07-07 2021-05-11 山东浦创流体技术有限公司 新型方砖堵孔方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108278142A (zh) * 2017-12-27 2018-07-13 山东国瓷功能材料股份有限公司 一种蜂窝陶瓷堵孔结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5514446A (en) * 1994-03-11 1996-05-07 Ngk Insulators, Ltd. Ceramic honeycomb structural body
CN1856349A (zh) * 2003-09-25 2006-11-01 康宁股份有限公司 具有改进结构强度的非对称蜂窝状壁流过滤器
EP1946840A1 (fr) * 2005-11-04 2008-07-23 Ngk Insulators, Ltd. Structure en nid d abeilles et catalyseur en nid d abeilles
JP2010024072A (ja) * 2008-07-16 2010-02-04 Tokyo Yogyo Co Ltd ハニカム集合体
EP2644244A2 (fr) * 2012-03-30 2013-10-02 NGK Insulators, Ltd. Structure en nid d'abeille
CN108278142A (zh) * 2017-12-27 2018-07-13 山东国瓷功能材料股份有限公司 一种蜂窝陶瓷堵孔结构

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003260322A (ja) * 2002-03-08 2003-09-16 Ngk Insulators Ltd ハニカム構造体、その製造方法及び排ガス浄化システム
CN1875173A (zh) * 2003-11-06 2006-12-06 日立金属株式会社 陶瓷蜂窝式过滤器、排气净化装置及排气净化方法
US7485170B2 (en) * 2005-11-30 2009-02-03 Corning Incorporated Narrow pore size distribution cordierite ceramic honeycomb articles and methods for manufacturing same
WO2009141892A1 (fr) * 2008-05-20 2009-11-26 イビデン株式会社 Structure en nid d'abeille
FR2969696B1 (fr) * 2010-12-23 2013-01-04 Saint Gobain Ct Recherches Filtre a particules du type assemble
EP3171962A1 (fr) * 2014-07-25 2017-05-31 Corning Incorporated Structures en nid d'abeille tolérantes aux défauts
JP7029221B2 (ja) * 2016-02-17 2022-03-03 日本碍子株式会社 目封止ハニカム構造体、及び目封止ハニカム構造体の製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5514446A (en) * 1994-03-11 1996-05-07 Ngk Insulators, Ltd. Ceramic honeycomb structural body
CN1856349A (zh) * 2003-09-25 2006-11-01 康宁股份有限公司 具有改进结构强度的非对称蜂窝状壁流过滤器
EP1946840A1 (fr) * 2005-11-04 2008-07-23 Ngk Insulators, Ltd. Structure en nid d abeilles et catalyseur en nid d abeilles
JP2010024072A (ja) * 2008-07-16 2010-02-04 Tokyo Yogyo Co Ltd ハニカム集合体
EP2644244A2 (fr) * 2012-03-30 2013-10-02 NGK Insulators, Ltd. Structure en nid d'abeille
CN108278142A (zh) * 2017-12-27 2018-07-13 山东国瓷功能材料股份有限公司 一种蜂窝陶瓷堵孔结构

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112778018A (zh) * 2020-07-07 2021-05-11 山东浦创流体技术有限公司 新型方砖堵孔方法
CN112778018B (zh) * 2020-07-07 2022-09-09 山东浦创流体技术有限公司 新型方砖堵孔方法

Also Published As

Publication number Publication date
CN109356688A (zh) 2019-02-19
CN108278142A (zh) 2018-07-13

Similar Documents

Publication Publication Date Title
US9080484B2 (en) Wall flow type exhaust gas purification filter
JP4567674B2 (ja) セラミックフィルタ
KR100874398B1 (ko) 허니컴 구조체
JP5369029B2 (ja) ハニカムフィルタ
US20120317946A1 (en) Exhaust gas purification filter
JPWO2008120499A1 (ja) ハニカムセグメント
US20100257830A1 (en) Partially plug-less dpf
JP6251078B2 (ja) ハニカム構造体
JP2002250216A (ja) ディーゼル粒子フィルタ
WO2019128561A1 (fr) Structure de bouchage de trou de céramique en nid d'abeilles
WO2007066671A1 (fr) Corps à structure en nid d’abeilles et son procédé de production
US7645427B2 (en) Honeycomb structure, manufacturing method of the structure, and exhaust gas purification system using the structure
WO2019128560A1 (fr) Filtre céramique en nid d'abeilles ayant une résistance élevée aux chocs thermiques
CN109356689B (zh) 一种抗热震非对称蜂窝陶瓷壁流式过滤器
JP6259334B2 (ja) ハニカム構造体
JP4735917B2 (ja) セラミックハニカムフィルタ
JP2010101282A (ja) 目封止ハニカム構造体及びその製造方法
CN107224812B (zh) 蜂窝过滤器
JP6174517B2 (ja) ハニカム構造体
JP6485162B2 (ja) 排ガス浄化フィルタ
US20090193775A1 (en) Plugged honeycomb structure
JP2011102557A (ja) ディーゼルパティキュレートフィルタ
JP5188237B2 (ja) ハニカム構造体
JP5456268B2 (ja) ハニカム構造体
JP5202416B2 (ja) 目封止ハニカム構造体及びその製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18894602

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18894602

Country of ref document: EP

Kind code of ref document: A1