WO2007094499A1 - セラミックハニカムフィルタ及び排気ガス浄化装置 - Google Patents
セラミックハニカムフィルタ及び排気ガス浄化装置 Download PDFInfo
- Publication number
- WO2007094499A1 WO2007094499A1 PCT/JP2007/052995 JP2007052995W WO2007094499A1 WO 2007094499 A1 WO2007094499 A1 WO 2007094499A1 JP 2007052995 W JP2007052995 W JP 2007052995W WO 2007094499 A1 WO2007094499 A1 WO 2007094499A1
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- Prior art keywords
- exhaust gas
- ceramic
- filter
- open
- channels
- Prior art date
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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
-
- 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
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2486—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure characterised by the shapes or configurations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
-
- 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
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
-
- 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
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2455—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the whole honeycomb or segments
-
- 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
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2459—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the plugs
-
- 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
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2498—The honeycomb filter being defined by mathematical relationships
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- 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
-
- 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
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- 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
- the present invention relates to a ceramic heart filter and an exhaust gas purification device suitable for purifying particulate matter contained in exhaust gas of a diesel engine or the like.
- a Hercam filter is used to remove particulates mainly composed of carbon such as exhaust gas from diesel engines.
- the her cam filter is alternately plugged at both end faces of the exhaust gas inflow side and outflow side.
- An example of a conventional ceramic-housed cam filter having such a structure is shown in FIGS. 6 (a) and 6 (b).
- This ceramic hard filter 50 includes a porous partition wall 2 that forms a plurality of flow paths 3a and 3b, a porous ceramic heart structure 11 that also has a force with an outer peripheral portion 1 that surrounds the porous partition wall 2, and a porous structure.
- the plugging portion 5 does not overlap with the plugging portion 5 and is arranged in a checkered pattern.
- the exhaust gas containing fine particles flows into the inflow side open end 12 force channel 3a, passes through the partition wall 2, and then is discharged through the adjacent channel 3b to the outflow side end surface 13 forces. At this time, the fine particles contained in the exhaust gas are collected in pores (not shown) formed in the partition wall 2.
- the pores of the partition walls 2 will be clogged, greatly reducing the collection function, and increasing the pressure loss and reducing the engine output.
- the deposited fine particles (PM) are burned by an electric heater, burner, microwave, etc., and the ceramic hard filter 50 is regenerated. Further, oxidation of the fine particles deposited by the catalyst supported on the ceramic hard filter 50 is promoted, and the ceramic hard filter 50 is regenerated.
- a large amount of fine particles accumulate, and regeneration is not performed sufficiently, engine output decreases, and in the worst case, the filter is damaged.
- Japanese Patent Application Laid-Open No. 2002-371826 discloses an exhaust gas purification apparatus in which a part of a sealing portion is omitted to be in a flow-through state, and the pressure loss of a filter unit cross section is reduced.
- a ceramic hard cam filter is disclosed. This ceramic hearth filter is provided with a small number of open flow paths at arbitrary positions, which do not have a sealing portion on either side of the exhaust gas inflow side and the exhaust gas outflow side.
- the open channels provided arbitrarily are adjacent to each other via the partition wall, the exhaust gas flows in a concentrated manner in the adjacent open channel having a low ventilation resistance.
- Japanese Patent Application Laid-Open No. 2004-251137 describes a flow pattern in a pinecone pattern only on one end face of a ceramic hard structure having a large number of axially passing channels partitioned by porous partition walls.
- a Harcam filter having a sealed end is disclosed.
- this ceramic hard filter since the sealing portion is not provided on the other end surface, substantially no sealing portion is provided in almost half of all the flow paths. Accordingly, a low pressure loss can be obtained, but there is a problem that the particulate collection performance is not sufficient because there are too many open flow paths without sealing portions.
- JP-A-57-201518 discloses a ceramic hard filter provided with an open flow path through which 5 to 20% of exhaust gas passes.
- an open flow path is formed without providing a sealing section in a flow path where a sealing section should be originally provided on the open end side (no sealing section is provided on the four sides). Therefore, the ratio of open channels is about 5% of all channels. However, the ratio of the open channel is too small, and the effect of reducing the pressure loss is not sufficient. Furthermore, all of the periphery of the open flow path is a flow path sealed on one side, and the open flow paths are not adjacent to each other in the diagonal direction. Therefore, there is a problem that the exhaust gas flow is concentrated in an open channel having a small ventilation resistance, and the collection rate of the fine particles is deteriorated.
- Japanese Patent Application Laid-Open No. 60-3420 is a ceramic hard filter having a large number of cells in which an inlet end and an outlet end are alternately plugged.
- a ceramic hard cam filter provided with an open flow path having no sealing portion at a rate of% is disclosed.
- the direction of force S at the center of the ceramic hard filter is easy to deposit fine particles at the center where the exhaust gas easily passes, the effect of reducing the pressure loss is sufficient only with such an outer flow path. Not a minute.
- Japanese Patent Publication No. 1-27767 is a ceramic housing that suppresses an increase in pressure loss during passage of exhaust gas by providing a vent hole having a diameter larger than that of the partition wall in a part of the exhaust gas passage.
- -cam A filter is disclosed.
- an open channel that does not seal both end faces is provided in the ceramic hard cam filter at a ratio of 0.5 to 10% of the total channel.
- the effect of reducing the pressure loss is not sufficient with an open channel of about 0.5 to 10% of the total channel.
- an object of the present invention is to provide a ceramic heart cam filter in which pressure loss is reduced without impairing particulate collection performance, and an exhaust gas purification apparatus having a powerful ceramic heart cam filter. There is.
- the ceramic hearth filter of the present invention is provided on the exhaust gas inflow side or the exhaust gas outflow side of each flow path, and the ceramic honeycomb structure having a large number of flow paths partitioned by porous partition walls.
- the number of open passages that have no sealing portions on either the exhaust gas inflow side or the exhaust gas outflow side is more than 15% of the total number of flow paths and 40% or less.
- the arrangement of the open flow paths is diagonal.
- the open channels adjacent to the diagonally sealed channels are 10 to 90% of the total number of open channels. Is preferred.
- An exhaust gas purifier according to the present invention is characterized by comprising the above ceramic hard filter.
- the ceramic hearth filter of the present invention having the above structure impairs the collection performance of fine particles. Since the pressure loss has been reduced without success, it is suitable for efficiently removing particulate matter contained in exhaust gas from diesel engines and the like.
- FIG. 1 (a) is a front view showing one end face of an example of a ceramic honeycomb filter of the present invention.
- FIG. 1 (b) is a partial cross-sectional view showing an example of a ceramic hard cam filter of the present invention.
- FIG. 1 (c) is a rear view showing the other end face of an example of the ceramic honeycomb filter of the present invention.
- FIG. 2 is a schematic view showing an example of a production process of a ceramic hard cam filter of the present invention.
- FIG. 3 is a schematic view showing a process of applying a tape to a film having a through hole so as to form an open channel.
- FIG. 4 (a) is a front view showing one end face of another example of the ceramic honeycomb filter of the present invention.
- FIG. 4 (b) is a partial cross-sectional view showing another example of the ceramic hard filter of the present invention.
- FIG. 4 (c) is a rear view showing the other end surface of another example of the ceramic honeycomb filter of the present invention.
- FIG. 5 is a schematic view showing an apparatus for injecting a plugging material.
- FIG. 6 (a) is a front view showing one end face of a conventional ceramic honeycomb filter.
- FIG. 6 (b) is a partial cross-sectional view showing a conventional ceramic hearth filter.
- the ceramic hearth filter 10 of the present invention has 15 open channels 30 adjacent to each other in the diagonal direction. Since it exceeds 40% and is below 40%, it has the following effects.
- the exhaust gas flowing into the flow path 3a from the exhaust gas inflow side end face 12 of the ceramic heavy filter 10 is a force that passes through the partition wall 2 and also flows out of the adjacent flow path 3b.
- Exhaust gas inflow side and exhaust gas outflow side Since the exhaust gas that has flowed into the open flow path 30 that does not have the sealing portions 5 and 6 flows out as it is without passing through the partition wall 2, it is possible to suppress an increase in pressure loss.
- the open flow channel surrounded by the open flow channel has a ventilation resistance, and the exhaust gas flow concentrates there. Therefore, the open flow paths 30 are not adjacent to each other through the partition wall, and the exhaust gas flow does not concentrate. As a result, the exhaust gas flow is dispersed in the open channel 30 adjacent in the diagonal direction, and the outflow of fine particles in the exhaust gas can be suppressed while reducing the pressure loss.
- the number of open channels 30 is 15% or less of the total number of channels, the effect of reducing pressure loss is small. If the number of open channels 30 exceeds 40%, the amount of fine particles flowing out increases, and the collection rate decreases.
- the number of open channels 30 is 20 to 35% of the total number of channels.
- Each open channel 30 is adjacent to four channels in the diagonal direction, and at least one of the channels may be an open channel.
- the number of open channels adjacent to the sealed channels in the diagonal direction is preferably 10 to 90% of the number of all open channels.
- the exhaust gas flow is dispersed by the open flow path 30 having a small ventilation resistance, and the outflow of fine particles in the exhaust gas is reduced. If it is less than 10% or more than 90%, the ability to collect fine particles with low effect of reducing pressure loss is low.
- the diagonally adjacent sealed channels are 20-60% of the number of all open channels 30.
- the partition wall and the sealing portion of the ceramic hard cam structure mainly function as a filter for removing particulates in the exhaust gas of the diesel engine, and thus are made of a material having excellent heat resistance.
- a ceramic material whose main crystal is at least one selected from the group strength of cordierite, alumina, mullite, silicon nitride, silicon carbide, LAS, aluminum titanate, titania, zircoure, and aluminum nitride. It is preferable to use it.
- ceramic hard filters with cordierite as the main crystal are most preferred because they are inexpensive, have excellent heat and corrosion resistance, and have low thermal expansion.
- the porosity of the partition walls of the ceramic hard cam structure is preferably 45 to 80%. Most of the fine particles in the exhaust gas flowing into the open flow path pass through the flow path as they are, but if the partition wall porosity is 45 to 80%, some of the fine particles are formed in the partition walls. Since it is collected in the pores, the collection rate does not decrease so much. If the porosity is less than 45%, the pressure loss of the Hercam filter will increase, leading to a decrease in engine output.If the porosity exceeds 80%, the strength of the partition will decrease, and it will be damaged by thermal shock or vibration. It becomes easy.
- the porosity of the plugging material of the two-cam structure may be either lower, lower, or higher than the partition wall porosity, but if it is higher than the partition wall porosity, Since the exhaust gas can also pass through the inside of the pores in the plugging material, the deposition of fine particles on the exhaust gas inflow side end face 51 of the exhaust gas inflow side plugged portion is preferable.
- the partition wall thickness of the ceramic hard structure is preferably 0.1 to 0.5 mm.
- the partition wall pitch is 1.2 m. m or more is preferable. If the partition wall thickness is less than 0.1 mm, the strength of the ceramic hard structure decreases, and if the partition wall thickness exceeds 0.5 mm, the ventilation resistance of the partition wall against exhaust gas increases and the pressure loss of the filter increases. A more preferable partition wall thickness is 0.2 to 0.4 mm. Also, if the partition wall pitch is less than 1.3 mm, the opening area on the exhaust gas inflow side of the her cam structure becomes small, and the pressure loss at the filter inlet increases.
- the apparatus for purifying exhaust gas according to the present invention which includes a ceramic hearth filter having 20 to 40% of the total number of open channels, maintains a good particulate collection rate. However, the pressure loss is low. By disposing such a ceramic hard cam filter downstream of the SCR catalyst, it is possible to efficiently remove fine particles and NOx with low pressure loss.
- FIG. 2 shows a manufacturing process of the ceramic hard cam filter of the present invention.
- the ceramic hard structure 11 having a large number of channels surrounded by the partition walls is obtained by kneading and extruding the clay of the ceramic raw material powder, and firing the obtained honeycomb structure formed body.
- a through hole 8 is opened in the film 7 by laser processing or the like [step (b)]. Instead of opening the through-holes 8 so as to form the open flow path 30, as shown in FIG.
- the film 7 After the through-holes 8 are opened so that the sealed flow paths are arranged in a pine pattern, the film 7 The through-hole 8 at a position corresponding to the open flow path 30 may be blocked by sticking the tape 9a on the top. Depending on the arrangement of the open channel 30, a tape 9b may be further applied.
- a through-hole 8 ′ is opened in a checkered pattern by laser processing or the like in the strong flow path without providing the sealing portion 5 and the sealing material slurry is introduced into the flow path end on the other end face 13 side
- the film 7 is dried to obtain molded bodies having the sealing portions 5 and 6 on the side of the end faces 12 and 13. By firing this, the sealing portions 5 and 6 are separated from the partition walls 2.
- An integrated ceramic hard cam filter 10 is obtained [step (g)].
- the sealing material slurry may be directly introduced by inserting the nozzle 32 of the sealing material injection device 31 shown in FIG. 5 into the flow path without attaching the film 7 to the one end surface 12.
- the sealing portion 5 can be formed inside the flow path as shown in FIG.
- Kaolin powder, talc powder, silica powder, aluminum hydroxide powder and alumina powder are composed of 47 to 53 mass% SiO, 32 to 38 mass% A10, and 21 to 16 mass% MgO.
- the cordierite-producing raw material powder was prepared by blending so as to have the following composition.
- This cordierite-producing raw material powder was sufficiently mixed with water, a forming aid and a pore former to prepare a ceramic clay which can be extruded into a honeycomb structure.
- This ceramic clay was extruded to produce a honeycomb structure with an outer peripheral wall and a square-shaped channel surrounded by partition walls inside the outer peripheral wall, dried and fired. Diameter 267 mm, total length
- a honeycomb structure having a partition wall structure of L300 mm, partition wall pitch 1.5 mm, partition wall thickness 0.3 mm, and partition wall porosity of 65% was manufactured.
- a ceramic hard filter of the present invention was produced.
- a resin film 7 is pasted on the end face 12 of the ceramic hard cam structure [step (a)], and a through-hole 8 is opened in the film 7 with a laser so that an open channel having the arrangement shown in Table 1 is formed.
- Step (b) The end face 12 of the ceramic hard structure 11 was immersed in the sealing slurry 21 in the container 20 [step (c)], and the sealing material slurry was introduced into the end of the flow path [step (d)]. After removing the film, the sealing part 5 was dried [step (e)].
- the film 7 is attached to the other end surface 13, and a through hole 8 ′ is formed in the film 7 in a pinch pattern by the laser so that only one end is sealed in the sealing flow path, and the end surface 12
- the sealing material slurry was introduced into the end portion of the flow path [Step (£)].
- the sealing part 6 was dried and the sealing parts 5 and 6 were baked to obtain a ceramic heart filter in which the sealing parts 5 and 6 were integrated with the partition wall.
- the ceramic hard filter had sealing channels arranged in a checkered pattern and open channels arranged in a diagonal direction.
- Example 1 Except for changing the method of opening the through-holes 8 of the resin film 7 affixed to the end face 12 of the ceramic honeycomb structure so as to form an open channel having the arrangement shown in Table 1, Example 1 and In the same manner, a ceramic hard cam filter was produced.
- the ceramic heavy cam filter of Comparative Example 3 was not provided with an open channel.
- the nozzle 32 is inserted into the flow path forming the sealing portion so that the open flow path having the arrangement shown in Table 1 is formed, and the end face 12 to 10 mm is inserted. Slurry was introduced at the position to form a sealing portion 5 on the end face 12 of the ceramic hard cam structure. Except for this, a ceramic hard filter was produced in the same manner as in Example 1. The ceramic high cam filter of Comparative Example 6 was not provided with an open channel.
- the pressure loss and the collection rate of the particulate matter were measured for the ceramic hard filters of Examples 1 to 9 and Comparative Examples 1 to 6.
- the pressure loss was determined from the pressure difference between the inlet and outlet sides of the ceramic herm filter at an air flow rate of 15 Nm 3 / min using a pressure loss test stand, and relative to the measurement result of Example 1 as 1. Shown by value.
- the particulate collection rate was 10 Nm 3 / min with an air flow rate, and carbon powder with an average particle size of 0.042 ⁇ m was charged into the ceramic house filter for 2 hours at a rate of 3 g / h.
- the weight was measured and calculated according to the following formula: (Captured force, weight of one bon powder, weight of charged carbon powder) X 100 (%). These results are shown in Table 1.
- Example 1 16 None Yes 35 End face 1 80
- Example 2 20 None Yes 35 End face 0.95 75
- Example 3 25 None Yes 30 End face 0.90 69
- Example 4 30 None Yes 30 End face 0.85 59
- Example 5 35 None Yes 20 faces 0.80
- Example 6 40 No Yes 20 0.75
- Example 7 20 No Yes 35 Minor side 0.94
- Example 8 30 No Yes Yes 30 Inside 0.84
- Example 9 40 No Yes 20 Inside 0.73
- Comparative example 1 10 No Yes Yes 30 3 ⁇ 4 ⁇ surface 1.15
- Comparative Example 2 50 None Yes 0 0.30
- Comparative Example 3 0 None None 0 End Face 1.25
- Comparative Example 4 10 None Yes 30 Inside 1.14
- Comparative Example 5 50 None Yes 0 Inside 0.29 31 Comparative Example 6 0 None None 0 Inside 1.23 91
- FIG. 4 (c) shows a case where the sealing portion is provided on the inner side of the end face of the flow path.
- the open-flow channels are diagonally adjacent, and the number of particles is more than 15% and less than 40% of the total number of channels. It can be seen that the pressure loss is reduced without any damage. In particular, when the proportion of the open channel was 20 to 35%, the balance between the particulate collection performance and the pressure loss was good.
- the ceramic harmonic filters of Comparative Examples 1 and 4 in which the number of open channels was 15% or less of the total number of channels were large in pressure loss.
- the ceramic Ha-cam filters of Comparative Examples 2 and 5 with open channels exceeding 45% of the total number of channels have a low pressure loss but a practical level with low collection rate. I helped. In Comparative Examples 3 and 6 having no open channel, the collection rate was good, but the pressure loss was high.
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- Physics & Mathematics (AREA)
- Geometry (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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KR1020087019853A KR101425496B1 (ko) | 2006-02-17 | 2007-02-19 | 세라믹 허니컴 필터 및 배기 가스 정화 장치 |
CN2007800056185A CN101384330B (zh) | 2006-02-17 | 2007-02-19 | 陶瓷蜂窝过滤器及排放气体净化装置 |
JP2008500589A JP5195416B2 (ja) | 2006-02-17 | 2007-02-19 | セラミックハニカムフィルタ及び排気ガス浄化装置 |
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JP2006-041500 | 2006-02-17 | ||
JP2006041500 | 2006-02-17 |
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JP (1) | JP5195416B2 (ja) |
KR (1) | KR101425496B1 (ja) |
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WO (1) | WO2007094499A1 (ja) |
Cited By (8)
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WO2009084567A1 (ja) * | 2007-12-27 | 2009-07-09 | Ngk Insulators, Ltd. | 部分目封止レスdpf |
EP2106837A1 (en) * | 2008-03-28 | 2009-10-07 | Mazda Motor Corporation | Particulate filter |
WO2011067823A1 (ja) * | 2009-12-01 | 2011-06-09 | イビデン株式会社 | ハニカムフィルタ及び排ガス浄化装置 |
JP2011224538A (ja) * | 2009-12-01 | 2011-11-10 | Ibiden Co Ltd | ハニカムフィルタ及び排ガス浄化装置 |
JP2012205973A (ja) * | 2011-03-29 | 2012-10-25 | Ngk Insulators Ltd | セラミックスフィルタ |
WO2015083670A1 (ja) * | 2013-12-02 | 2015-06-11 | 株式会社キャタラー | 排ガス浄化装置およびパティキュレートフィルタ |
JP2015183532A (ja) * | 2014-03-20 | 2015-10-22 | 日本碍子株式会社 | ハニカム構造体 |
EP3078822A4 (en) * | 2013-12-02 | 2017-01-11 | Cataler Corporation | Exhaust gas purification device and particulate filter |
Families Citing this family (3)
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KR100964552B1 (ko) * | 2009-05-07 | 2010-06-21 | 씨엠씨(주) | 디젤차량용 매연저감장치 |
JP6887303B2 (ja) * | 2017-05-12 | 2021-06-16 | 日本碍子株式会社 | ハニカムフィルタ |
JP7011051B2 (ja) * | 2018-04-23 | 2022-01-26 | 日本碍子株式会社 | 有効又は無効流路を特定する方法及び装置 |
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JP2002256842A (ja) * | 2000-12-25 | 2002-09-11 | Denso Corp | 排ガス浄化フィルタ |
JP2003148127A (ja) * | 2001-11-07 | 2003-05-21 | Hino Motors Ltd | 排気浄化装置 |
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JP2003035126A (ja) * | 2001-07-24 | 2003-02-07 | Mitsubishi Motors Corp | ディーゼルエンジンの排気浄化装置 |
JP2004108203A (ja) * | 2002-09-17 | 2004-04-08 | Hino Motors Ltd | パティキュレートフィルタ |
JP3942086B2 (ja) * | 2002-09-20 | 2007-07-11 | 日野自動車株式会社 | パティキュレートフィルタ |
JP4369141B2 (ja) * | 2003-02-18 | 2009-11-18 | 日本碍子株式会社 | ハニカムフィルタ及び排ガス浄化システム |
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2007
- 2007-02-19 CN CN2007800056185A patent/CN101384330B/zh not_active Expired - Fee Related
- 2007-02-19 JP JP2008500589A patent/JP5195416B2/ja not_active Expired - Fee Related
- 2007-02-19 WO PCT/JP2007/052995 patent/WO2007094499A1/ja active Application Filing
- 2007-02-19 KR KR1020087019853A patent/KR101425496B1/ko active IP Right Grant
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JP2002256842A (ja) * | 2000-12-25 | 2002-09-11 | Denso Corp | 排ガス浄化フィルタ |
JP2003148127A (ja) * | 2001-11-07 | 2003-05-21 | Hino Motors Ltd | 排気浄化装置 |
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JP2009154124A (ja) * | 2007-12-27 | 2009-07-16 | Ngk Insulators Ltd | 部分目封止レスdpf |
WO2009084567A1 (ja) * | 2007-12-27 | 2009-07-09 | Ngk Insulators, Ltd. | 部分目封止レスdpf |
US8128723B2 (en) | 2007-12-27 | 2012-03-06 | Ngk Insulators, Ltd. | Partially plug-less DPF |
US8092565B2 (en) | 2008-03-28 | 2012-01-10 | Mazda Motor Corporation | Particulate filter |
EP2106837A1 (en) * | 2008-03-28 | 2009-10-07 | Mazda Motor Corporation | Particulate filter |
WO2011067823A1 (ja) * | 2009-12-01 | 2011-06-09 | イビデン株式会社 | ハニカムフィルタ及び排ガス浄化装置 |
JP2011224538A (ja) * | 2009-12-01 | 2011-11-10 | Ibiden Co Ltd | ハニカムフィルタ及び排ガス浄化装置 |
US8414838B2 (en) | 2009-12-01 | 2013-04-09 | Ibiden Co., Ltd. | Honeycomb filter and exhaust gas purifying apparatus |
JP2012205973A (ja) * | 2011-03-29 | 2012-10-25 | Ngk Insulators Ltd | セラミックスフィルタ |
WO2015083670A1 (ja) * | 2013-12-02 | 2015-06-11 | 株式会社キャタラー | 排ガス浄化装置およびパティキュレートフィルタ |
EP3078822A4 (en) * | 2013-12-02 | 2017-01-11 | Cataler Corporation | Exhaust gas purification device and particulate filter |
JPWO2015083670A1 (ja) * | 2013-12-02 | 2017-03-16 | 株式会社キャタラー | 排ガス浄化装置およびパティキュレートフィルタ |
US9981216B2 (en) | 2013-12-02 | 2018-05-29 | Cataler Corporation | Exhaust gas purification device and particulate filter |
US10156170B2 (en) | 2013-12-02 | 2018-12-18 | Cataler Corporation | Exhaust gas purification device and particulate filter |
JP2015183532A (ja) * | 2014-03-20 | 2015-10-22 | 日本碍子株式会社 | ハニカム構造体 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2007094499A1 (ja) | 2009-07-09 |
KR20080094052A (ko) | 2008-10-22 |
KR101425496B1 (ko) | 2014-08-13 |
JP5195416B2 (ja) | 2013-05-08 |
CN101384330B (zh) | 2011-04-13 |
CN101384330A (zh) | 2009-03-11 |
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