WO2003067043A1 - Honeycomb structure - Google Patents
Honeycomb structure Download PDFInfo
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- WO2003067043A1 WO2003067043A1 PCT/JP2003/001161 JP0301161W WO03067043A1 WO 2003067043 A1 WO2003067043 A1 WO 2003067043A1 JP 0301161 W JP0301161 W JP 0301161W WO 03067043 A1 WO03067043 A1 WO 03067043A1
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- Prior art keywords
- honeycomb
- honeycomb structure
- segment
- degrees
- cross
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Classifications
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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
- 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
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- 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
- B01D46/247—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the cells
-
- 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
- B01D46/2478—Structures comprising honeycomb 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
- B01D46/2486—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
- B01D46/249—Quadrangular e.g. square or diamond
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
- B01J35/57—Honeycombs
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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
- 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
-
- 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
-
- 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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/06—Ceramic, e.g. monoliths
-
- 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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
-
- 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/28—Methods or apparatus for fitting, inserting or repairing different elements by using adhesive material, e.g. cement
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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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/10—Residue burned
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/30—Exhaust treatment
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24149—Honeycomb-like
Definitions
- the present invention relates to a honeycomb structure used for a filter for collecting particulates in exhaust gas from an internal combustion engine, a boiler, or the like, and more particularly to an 82-cam structure excellent in resistance to cracks due to thermal stress.
- Honeycomb structures are used as filters for collecting particulates in exhaust gas from internal combustion engines, poilers, etc., especially diesel particulates.
- a honeycomb structure used for such a purpose generally has a large number of flow holes 3 penetrating in the X-axis direction, which are partitioned by partition walls 2 as shown in FIGS. 9 (a) and 9 (b). Adjacent flow holes 3 are plugged at one end opposite to each other so that the end face has a checkered pattern.
- the fluid to be treated is plugged at the end of the flow hole 3 where the inlet side end face 4 2 is not plugged, that is, the end face 4 4 of the outlet hole side.
- DPF filter
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a honeycomb structure including a honeycomb segment having excellent resistance to cracks due to thermal stress.
- the present inventor has conducted intensive studies on the above problems, and as a result, it has been found that cracks generated in the 82 cam structure are caused by stress concentrated at the corners of the flow holes, that is, at the intersections of the partition walls.
- the present invention is based on the above findings, and has a plurality of: an outer peripheral wall, a partition wall disposed inside the outer peripheral wall, and a plurality of axially penetrating flow holes partitioned by the partition wall.
- honeycomb structure in which the honeycomb segments are integrated with each other, wherein an angle of a partition wall with respect to a straight line along an outermost point of the outer peripheral wall adjacent to another honeycomb segment in a cross section perpendicular to an axial direction of the honeycomb structure.
- the present invention provides a honeycomb structure characterized by including a honeycomb segment having a range of 25 to 65 degrees.
- the shape of the flow hole in the cross section of the honeycomb segment is preferably a quadrangle, and at least one of the honeycomb segments arranged at the center of the honeycomb structure has the angle of 25 to 65.
- it is a honeycomb segment having a range of degrees.
- the honeycomb segment contains silicon carbide or a silicon-silicon carbide composite material as a main component, and 70% by volume or more of the 82-cam structure has a cross-sectional area of 900 mm 2 to it is preferably made of a honeycomb segment is l 0 0 0 mm 2.
- an opening of a predetermined flow hole in the honeycomb segment is sealed at one end face, and an opening of a part of the remaining flow hole is sealed at another end face. It is also preferable that the openings of the predetermined flow holes in the segment are sealed at one end face, and the openings of all the remaining flow holes are sealed at the other end face.
- FIG. 1 (a) to 1 (d) are schematic views showing an embodiment of the honeycomb structure of the present invention.
- FIG. 1 (a) is a schematic perspective view of a honeycomb segment
- FIG. 1 (b) is a honeycomb.
- FIG. 1 (c) is a schematic perspective view of a honeycomb structure
- FIG. 1 (d) is a schematic cross-sectional view of a honeycomb structure.
- FIG. 2 is an enlarged view of a portion II in FIG.
- FIG. 3 is a schematic cross-sectional view showing another embodiment of the honeycomb segment according to the present invention.
- FIG. 4 is a schematic plan view showing still another embodiment of the honeycomb segment of the present invention.
- FIG. 5 is a schematic plan view showing a honeycomb structure including the honeycomb segments in FIG.
- FIG. 6 is a schematic plan view showing still another embodiment of the honeycomb segment in the present invention.
- FIG. 7 is a schematic plan view showing still another embodiment of the honeycomb structure of the present invention.
- FIG. 8 is a graph showing the relationship between the inclination angle of the honeycomb structure obtained in the example and the comparative example and the maximum stress during reproduction.
- FIGS. 9A and 9B are schematic diagrams showing a conventional honeycomb structure.
- FIG. 9A is a schematic perspective view
- FIG. 9B is a schematic plan view.
- FIG. 10 (a) to 10 (c) are schematic views showing a conventional honeycomb segment structure
- FIG. 10 (a) is a schematic perspective view of a honeycomb segment
- FIG. 10 (b) is a schematic view of the honeycomb segment
- FIG. 10 (c) is a schematic perspective view of a honeycomb structure.
- FIG. 11A is a schematic sectional view showing a conventional honeycomb structure.
- FIG. 11 (b) is a cross-sectional view of the honeycomb segment forming FIG. 11 (a), and FIG. 11 (c) is an enlarged view of a portion XIc in FIG. 11 (b).
- a section means a section perpendicular to the X-axis direction (the longitudinal direction of the flow hole) unless otherwise specified.
- the honeycomb structure of the present invention has an outer peripheral wall 8, a partition wall 2 disposed inside the outer peripheral wall 8,
- the honeycomb structure is formed by integrating a plurality of honeycomb segments 12 having a large number of flow holes 3 penetrating in the axial direction, which are partitioned by the honeycomb structure.
- the honeycomb structure includes a honeycomb segment in which a and / or b is in the range of 25 to 65 degrees.
- the conventional honeycomb segment has an inclination angle a of 90 degrees or 180 degrees (parallel), and usually has a rectangular cross section as a basic shape.
- Such 82 cam segments are arranged and integrated as shown in FIG. 10 (c) to form a honeycomb structure.
- a honeycomb structure is used for, for example, a DPF
- PM particulate matter
- the exhaust gas is located at the center of the DPF due to fluid characteristics. Regeneration also occurs actively in the center of the DPF because of the large flow to the center.
- the center of the DPF tends to have a high temperature and the outer periphery thereof tends to have a low temperature, and a temperature difference in the radial direction from the center of the DPF tends to occur. Therefore, since the central portion of the DPF tends to expand from the outer peripheral portion, for example, a stress is applied to the honeycomb segment 12a in FIG. As a result, stress concentrates on the intersection 25 of the partition walls 2, and as shown in FIG. 11 (c), for example, cracks easily occur at the intersection 25a of the partition walls. In addition, the crack once formed had the drawback that cracks easily propagated because stress was concentrated at the intersection 25b of the partition wall in the oblique direction.
- the honeycomb structure of the present invention has a honeycomb segment in which the inclination angle a is in the range of 25 to 65 degrees, for example, a honeycomb segment in which the inclination angles a and b are 45 degrees as shown in FIG. Therefore, when the stress S is applied in the same manner as described above, the stress is hardly concentrated at the intersection 25 of the partition walls structurally as shown in FIG. Also, even if a crack occurs in the intersection 25a, the stress does not concentrate on the adjacent intersection 25b, so that the crack does not easily propagate.
- the outer peripheral line 9 is a polygon in which the outer peripheral shape in the cross section of the honeycomb segment has a straight line and an inner angle that is a convex angle (an angle of less than 180 degrees), for example, a square as shown in FIG.
- the case means a straight line extending along the outer peripheral wall 8.
- lines on the outer peripheral wall 8b that are not adjacent to other honeycomb segments as shown in FIG. 1D are not included.
- the cross-sectional outer peripheral shape of the 82 cam segment is not a general polygon as described above, for example, as shown in FIG. 3, a polygon having an internal angle that is a concave angle (an angle larger than 180 degrees) is used.
- the outer line 9 is It means a straight line connecting the vertices outside the cam segment.
- the inclination angle (the angle of the partition 2 with respect to the outer line 9) is It means an acute angle formed at the intersection with a straight line extending along the partition 2.
- FIG. 4 shows a honeycomb segment according to another embodiment of the present invention, in which the inclination angles a and b are 30 degrees and 60 degrees, respectively.
- FIG. 5 shows the honeycomb segment shown in FIG. The joining form is shown. The effect of the present invention can be obtained even in such a mode.
- a polygonal 82 cam segment whose outer peripheral shape has a concave angle as shown in FIGS. 3 and 4, it can be easily aligned at the time of joining as shown in FIG. There are advantages too.
- FIG. 6 shows another type of honeycomb segment in which the inclination angles a and b are 30 degrees and 60 degrees, respectively. Although the intersection of the partition walls is not a right angle in the honeycomb segment shown in FIG. 6, the effect of the present invention can be obtained in such a form.
- the opening of the predetermined flow hole is sealed at one end face, and the opening of the remaining predetermined flow hole is sealed at the other end face. . By performing such sealing, a large filtration area can be secured.
- the remaining predetermined through-hole may be a part of the remaining through-hole, that is, there may be an unsealed through-hole at any end face, That the predetermined flow holes are all remaining flow holes, that is, that the openings of all the flow holes are sealed at one of the end faces, to secure the largest filtration area. It is preferable in that it can be used.
- a honeycomb segment having an inclination angle in the range of 25 to 65 degrees is a partition having an inclination angle in the range of 25 to 65 degrees with respect to any one of the outer peripheral lines. It means a honeycomb segment having 50% by volume or more, preferably 70% by volume or more, more preferably 90% by volume or more, and most preferably 95% by volume or more, based on the body. Further, the partition walls having an inclination angle of 25 to 65 degrees with respect to all the outer peripheral lines are 50% by volume or more, preferably 70% by volume or more, more preferably Suitably, it is at least 90% by volume, most preferably at least 95% by volume.
- partition walls are preferably in the form of a plate having a thickness in the range of 30 to 200 m, more preferably 40 to 100 m, and most preferably 50 to 500 m.
- the cross-sectional shape preferably has linearity such that a straight line can be drawn along the cross-section in a section where at least one flow hole is formed.
- the cross-sectional shape of the flow hole formed by partitioning by the partition wall is preferably a polygonal shape, and particularly preferably a quadrangular shape.
- the partition wall can be formed in a linear shape extending from one outer peripheral wall to another outer peripheral wall, and the inclination angle can be constant.
- a certain improvement effect can be expected by including at least one honeycomb segment having an inclination angle in the range of 25 to 65 degrees in the honeycomb structure. Further, it is preferable that the honeycomb segments having an inclination angle in the range of 25 to 65 degrees are arranged at the center of the cross section of the honeycomb structure. As described above, since the honeycomb structure tends to become hot at the center, the center is most susceptible to stress due to thermal expansion. Therefore, by disposing a honeycomb segment having an inclination angle in the range of 25 to 65 degrees at the center, the resistance of the entire honeycomb structure to thermal stress can be effectively improved.
- the honeycomb segment arranged at the center (hereinafter referred to as the center) in the cross section of the 82-cam structure refers to the cross-sectional center 10 of the 82-cam structure 1 as shown in FIG.
- the honeycomb segment 1 2 i includes or is adjacent to the cross-sectional center 10. Therefore, in the honeycomb structure shown in FIG. 7, four honeycomb segments 12 i adjacent to the center 10 of the cross section are the honeycomb segments arranged at the center.
- honeycomb segments arranged at the center are honeycomb segments having an inclination angle in the range of 25 to 65 degrees. Furthermore, it is arranged on the outer peripheral side of the honeycomb structure.
- the honeycomb segments 12 o in FIG. 7 be honeycomb segments having an inclination angle of 25 to 65 degrees, and all the honeycomb segments have an inclination angle of 25 to 65 degrees. Most preferably, it is a honeycomb segment having a range of 65 degrees.
- the main components of the honeycomb structure are cordierite, mullite, alumina, spinel, silicon carbide, silicon carbide-cordrite composite material, silicon monosilicon composite material, from the viewpoints of strength, heat resistance, and the like.
- the “main component” means that 50% by mass or more, preferably 70% by mass or more, more preferably 80% by mass or more of the honeycomb structure.
- the honeycomb structure 1 is made of metal silicon (S i) and silicon carbide (S i C), it is defined by S / (S i + S i C) of the honeycomb structure 1. If the Si content is too small, the effect of Si addition cannot be obtained, and if it exceeds 50% by mass, the effects of heat resistance and high thermal conductivity characteristic of SiC cannot be obtained.
- the Si content is preferably from 5 to 50% by mass, and more preferably from 10 to 40% by mass.
- a material for sealing the opening of the flow hole one or two or more materials selected from ceramics or metals that can be suitably used for the above-described honeycomb structure are preferable. It is more preferable to use the same material as the main component.
- the thermal conductivity of the honeycomb structure there is no particular limitation on the thermal conductivity of the honeycomb structure.
- the thermal conductivity is too high, the heat radiation is too large, and the temperature does not rise sufficiently during reproduction and the reproduction efficiency is lowered, which is not preferable.
- the thermal conductivity is too low, there is a problem that a local temperature rise occurs at the time of soot regeneration, and cracks are more likely to occur due to a large thermal stress.
- the thermal conductivity of the honeycomb structure at 40 ° C. is preferably 10 to 60 WZmK, more preferably 20 to 55 W / mK, and most preferably 25 to 50 WZmK.
- the size of the honeycomb segments in the honeycomb structure of the present invention is not limited.
- the shape of the honeycomb segment is not particularly limited, it is preferable that the cross-sectional shape be a square as shown in FIGS. 1 (a) and 1 (b). In addition, as shown in FIGS.
- the shape of the honeycomb segment on the outer peripheral side can be appropriately selected according to the shape of the honeycomb structure when integrated, but at least two sides are required. It is preferable that the cross-sectional shapes be straight lines perpendicular to each other.
- the cell density of the honeycomb segment (the number of flow holes per unit cross-sectional area) is not particularly limited. However, if the cell density is too low, the strength and effective GSA (geometric surface area) as a honeycomb structure are obtained. If the power is insufficient and the cell density is too high, the pressure loss when the fluid to be treated flows will increase.
- the preferred range of the cell density is 6-200 cells per square inch (0.9-311 cells / cm 2 ), more preferably 50-1000 cells per square inch (7.8-15.5 cells per square inch). cm 2 ), most preferably 100-400 cells square inch (15.5-62.0 cells Z cm 2 ).
- the honeycomb structure of the present invention is obtained by integrating a plurality of honeycomb segments, it can be integrated using a bonding material.
- a preferable bonding material can be selected from materials suitably used as a main component of the above-mentioned honeycomb structure.
- Difference in thermal expansion coefficient from 20 ° C between the bonding material and the hard second cam segment to 8 0 0 ° C is preferably not more than 1 X 1 0- 6 / ° C .
- the 82-cam structure of the present invention is used as a catalyst carrier for purifying exhaust gas of a heat engine such as an internal combustion engine or a combustion device such as a boiler, or reforming a liquid fuel or a gaseous fuel
- Catalyst for the honeycomb structure of the invention for example, a metal having catalytic ability Is preferably carried.
- Typical examples of the metal having catalytic activity include Pt, Pd, and Rh, and it is preferable that at least one of these metals is supported on the honeycomb structure.
- the raw material powder of the honeycomb structure As the raw material powder of the honeycomb structure, the above-mentioned suitable material, for example, silicon carbide powder is used, and a binder, for example, methylcellulose and hydroxypropoxylmethylcellulose is added thereto, and further, a surfactant and water are added thereto to obtain a plastic material. Make the soil.
- the die When extruding the clay, the die is extruded into a shape capable of forming a honeycomb segment according to the present invention, that is, a honeycomb segment having an inclination angle of 25 to 65 degrees. A honeycomb segment with a predetermined shape is obtained.
- the honeycomb segment according to the present invention can be obtained.
- it can also be obtained by cutting the outer periphery of a conventional honeycomb segment as shown in FIG. 10 (a). The segments obtained in this way are joined using, for example, ceramic cement, and then dried and hardened at, for example, 200 ° C. to obtain the honeycomb structure of the present invention.
- the method for supporting the catalyst on the honeycomb structure manufactured in this manner may be a method commonly performed by those skilled in the art.
- the catalyst can be supported by wash-coating a catalyst slurry, drying and calcining.
- a mixed powder of 75% by mass of SiC powder and 25% by mass of metallic Si powder is used, and methylcellulose and hydroxypropoxylmethylcellulose, a surfactant and water are added to the mixture to form a plastic material.
- the soil was made. Extrusion molding of this clay After drying with microwaves and hot air, the cross-sectional shape of the flow hole is square, the inclination angle is 0 ° and 90 °, the porosity is 43%, the average pore diameter is about 10 ⁇ m, and the partition wall thickness is about 300.
- a honeycomb segment having a urn (12 mi 1) and a cell density of about 47 cells Z cm 2 (300 cells / square inch) as shown in FIG. 10 (a) was obtained.
- honeycomb structures B to E with inclination angles a of 5, 10, 15, and 20 degrees were prepared as Comparative Examples 2 to 5, and the inclination angles were 25, 30, 35, 40, and 45 degrees, respectively.
- thermocouples to each of the obtained honeycomb structures A to J so that the internal temperature distribution can be measured accurately, and this is a direct injection type with a 2-L evening-intercooler Connected to the exhaust pipe of a diesel engine, the engine was operated using light oil containing 30 ppm Rhodia Ce fuel additive, and 6 gZL of soot was collected in the filter.
- the temperature distribution in the honeycomb structure when soot was burned by raising the temperature to 600 ° C was measured.
- the maximum stress in each honeycomb segment was calculated by the finite element method based on the measured temperature distribution, and the relationship between the inclination angle and the maximum stress was shown in FIG.
- the honeycomb structure of the present invention includes the honeycomb segments having the inclination angle in the range of 25 to 65 degrees, the honeycomb structure has good resistance to thermal stress. Therefore, the honeycomb structure of the present invention is useful as a honeycomb structure used for an exhaust gas collecting filter such as an internal combustion engine and a boiler.
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- Physics & Mathematics (AREA)
- Geometry (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Filtering Materials (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03705049A EP1473445B1 (en) | 2002-02-05 | 2003-02-05 | Honeycomb filter structure |
| PL03364165A PL364165A1 (pl) | 2002-02-05 | 2003-02-05 | Struktura plastra pszczelego |
| US10/473,612 US7169203B2 (en) | 2002-02-05 | 2003-02-05 | Honeycomb structure |
| AU2003211918A AU2003211918A1 (en) | 2002-02-05 | 2003-02-05 | Honeycomb structure |
| KR1020037013491A KR100593275B1 (ko) | 2002-02-05 | 2003-02-05 | 하니컴 구조체 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002-28422 | 2002-02-05 | ||
| JP2002028422A JP4157304B2 (ja) | 2002-02-05 | 2002-02-05 | ハニカム構造体 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003067043A1 true WO2003067043A1 (en) | 2003-08-14 |
Family
ID=27677858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2003/001161 Ceased WO2003067043A1 (en) | 2002-02-05 | 2003-02-05 | Honeycomb structure |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7169203B2 (ja) |
| EP (1) | EP1473445B1 (ja) |
| JP (1) | JP4157304B2 (ja) |
| KR (1) | KR100593275B1 (ja) |
| AU (1) | AU2003211918A1 (ja) |
| PL (1) | PL364165A1 (ja) |
| WO (1) | WO2003067043A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1535664A1 (en) * | 2003-11-13 | 2005-06-01 | Ngk Insulators, Ltd. | Ceramic honeycomb structure |
| EP2130600A3 (en) * | 2008-05-20 | 2010-02-24 | Ibiden Co., Ltd. | Honeycomb structure |
Families Citing this family (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005144250A (ja) * | 2003-11-12 | 2005-06-09 | Ngk Insulators Ltd | ハニカム構造体 |
| KR100608034B1 (ko) * | 2003-11-12 | 2006-08-08 | 니뽄 가이시 가부시키가이샤 | 허니컴 구조체 |
| JPWO2005064128A1 (ja) * | 2003-12-25 | 2007-07-19 | イビデン株式会社 | 排気ガス浄化装置および排気ガス浄化装置の再生方法 |
| JP2006223983A (ja) * | 2005-02-17 | 2006-08-31 | Ibiden Co Ltd | ハニカム構造体 |
| JP4511396B2 (ja) * | 2005-03-22 | 2010-07-28 | 日本碍子株式会社 | ハニカム構造体及びその製造方法 |
| CN100434137C (zh) * | 2005-06-24 | 2008-11-19 | 揖斐电株式会社 | 蜂窝结构体 |
| EP1736219A1 (en) * | 2005-06-24 | 2006-12-27 | Ibiden Co., Ltd. | Honeycomb structure |
| CN100534617C (zh) * | 2005-06-24 | 2009-09-02 | 揖斐电株式会社 | 蜂窝结构体 |
| JPWO2006137158A1 (ja) * | 2005-06-24 | 2009-01-08 | イビデン株式会社 | ハニカム構造体 |
| WO2006137164A1 (ja) * | 2005-06-24 | 2006-12-28 | Ibiden Co., Ltd. | ハニカム構造体 |
| JP5091672B2 (ja) | 2005-06-24 | 2012-12-05 | イビデン株式会社 | ハニカム構造体及びその製造方法 |
| JPWO2006137157A1 (ja) * | 2005-06-24 | 2009-01-08 | イビデン株式会社 | ハニカム構造体 |
| WO2006137156A1 (ja) * | 2005-06-24 | 2006-12-28 | Ibiden Co., Ltd. | ハニカム構造体 |
| JP4975619B2 (ja) * | 2005-06-24 | 2012-07-11 | イビデン株式会社 | ハニカム構造体 |
| WO2006137150A1 (ja) * | 2005-06-24 | 2006-12-28 | Ibiden Co., Ltd. | ハニカム構造体 |
| JP4890903B2 (ja) * | 2006-03-28 | 2012-03-07 | 日本碍子株式会社 | ハニカム構造体 |
| US7744669B2 (en) * | 2006-07-14 | 2010-06-29 | Corning Incorporated | Plugging material for aluminum titanate ceramic wall flow filter manufacture |
| EP2127719B1 (en) | 2007-02-02 | 2014-09-10 | NGK Insulators, Ltd. | Honeycomb structure |
| JPWO2008105082A1 (ja) | 2007-02-28 | 2010-06-03 | イビデン株式会社 | ハニカム構造体 |
| WO2008114480A1 (ja) * | 2007-03-20 | 2008-09-25 | Ngk Insulators, Ltd. | ハニカム構造体 |
| JP5714897B2 (ja) * | 2007-05-04 | 2015-05-07 | ダウ グローバル テクノロジーズ エルエルシー | 改良されたハニカムフィルタ |
| US20100300053A1 (en) * | 2007-12-17 | 2010-12-02 | Alary Jean-Andre | Ceramic honeycomb structures |
| JP2009255030A (ja) * | 2008-03-27 | 2009-11-05 | Ibiden Co Ltd | ハニカム構造体 |
| WO2009118875A1 (ja) * | 2008-03-27 | 2009-10-01 | イビデン株式会社 | ハニカム構造体 |
| AT507601B1 (de) * | 2008-12-02 | 2012-02-15 | Porzellanfabrik Frauenthal Gmbh | Regenerative thermische oxidationsanlage |
| JP2010227755A (ja) * | 2009-03-26 | 2010-10-14 | Ngk Insulators Ltd | セラミックハニカム構造体 |
| EP2368619B1 (en) * | 2010-03-26 | 2014-06-25 | Imerys | Ceramic honeycomb structures |
| KR20130114722A (ko) * | 2011-11-28 | 2013-10-17 | 스미토모 긴조쿠 고잔 가부시키가이샤 | 유가 금속 회수 방법 |
| USD748236S1 (en) * | 2013-04-30 | 2016-01-26 | Ibiden Co., Ltd | Honeycomb filter |
| USD749714S1 (en) * | 2013-04-30 | 2016-02-16 | Ibiden Co., Ltd. | Honeycomb filter |
| USD748237S1 (en) * | 2013-04-30 | 2016-01-26 | Ibiden Co., Ltd | Honeycomb filter |
| JP6581851B2 (ja) * | 2015-09-02 | 2019-09-25 | 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セグメント |
| JP2019025674A (ja) * | 2017-07-26 | 2019-02-21 | イビデン株式会社 | ハニカム構造体及びハニカム構造体の製造方法 |
| JP7057691B2 (ja) * | 2018-03-19 | 2022-04-20 | 日本碍子株式会社 | ハニカム構造体 |
| US11439932B2 (en) | 2019-01-11 | 2022-09-13 | Lawrence Livermore National Security, Llc | System and method for engineered ceramic packages for use in fluid treatment technologies |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381815A (en) | 1980-11-10 | 1983-05-03 | Corning Glass Works | Thermal shock resistant honeycomb structures |
| JPS62163697U (ja) * | 1986-04-08 | 1987-10-17 | ||
| DE3722707A1 (de) | 1987-07-09 | 1989-01-19 | Didier Werke Ag | Wabenkoerper aus einem keramischen werkstoff |
| JPH0647620U (ja) * | 1992-10-22 | 1994-06-28 | イビデン株式会社 | 排気ガス浄化装置 |
| JPH0828246A (ja) | 1994-07-14 | 1996-01-30 | Ibiden Co Ltd | セラミック構造体 |
| JPH11114338A (ja) * | 1997-10-16 | 1999-04-27 | Ngk Insulators Ltd | 高温排ガス処理用のセラミック製フィルタ装置 |
| EP1101910A2 (en) * | 1999-11-15 | 2001-05-23 | Ngk Insulators, Ltd. | Honeycomb structure |
| WO2001051174A1 (fr) | 2000-01-13 | 2001-07-19 | Ngk Insulators, Ltd. | Structure de nid d'abeilles a alveoles triangulaires |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07102483B2 (ja) | 1984-12-28 | 1995-11-08 | いすゞ自動車株式会社 | 歯車類の加工方法 |
| NL172604C (nl) * | 1970-07-23 | 1983-09-16 | Interatom | Inrichting voor het continu afscheiden van metaaldampen of metaalaerosolen in vloeibare vorm uit gassen, in het bijzonder van natriumdamp of -druppeltjes uit het schutgas van een natriumgekoelde kernenergie-installatie. |
| JPS5546338A (en) * | 1978-09-28 | 1980-04-01 | Ngk Insulators Ltd | Heat and shock resistant, revolving and heat-regenerating type ceramic heat exchanger body and its manufacturing |
| US4335783A (en) * | 1980-11-10 | 1982-06-22 | Corning Glass Works | Method for improving thermal shock resistance of honeycombed structures formed from joined cellular segments |
| JPS6151240A (ja) | 1984-08-20 | 1986-03-13 | Mitsubishi Electric Corp | デ−タ処理装置 |
| JPS62163697A (ja) | 1985-10-28 | 1987-07-20 | マブコ・リミテツド | のう胞性線維症の検出とモノクロ−ナル抗体の使用 |
| US5702508A (en) * | 1996-01-25 | 1997-12-30 | Moratalla; Jose | Ceramic desiccant device |
| KR100623486B1 (ko) | 1998-12-05 | 2006-09-12 | 존슨 맛쎄이 퍼블릭 리미티드 컴파니 | 미립자 제어에서의 개선 |
| JP2000192608A (ja) | 1998-12-28 | 2000-07-11 | Hiroyuki Noguchi | ハニカム構造材 |
| US6126833A (en) * | 1999-02-22 | 2000-10-03 | Ceramem Corporation | Cross-flow filtration device with filtrate conduit network and method of making same |
| DE60032952T2 (de) * | 1999-09-29 | 2007-10-25 | Ibiden Co., Ltd., Ogaki | Wabenförmiger Filter und Anordnung von keramischen Filtern |
| DE20016803U1 (de) * | 2000-09-29 | 2000-12-28 | Thomas Josef Heimbach GmbH, 52353 Düren | Filtereinrichtung |
| US6673414B2 (en) * | 2000-12-20 | 2004-01-06 | Corning Incorporated | Diesel particulate filters |
| FR2823253B1 (fr) * | 2001-04-06 | 2003-08-15 | Saint Gobain Ct Recherches | Corps filtrant pour la filtration de particules contenues dans les gaz d'echappement d'un moteur a combustion interne |
| JP3983117B2 (ja) * | 2001-07-31 | 2007-09-26 | 日本碍子株式会社 | ハニカム構造体及びその製造方法 |
-
2002
- 2002-02-05 JP JP2002028422A patent/JP4157304B2/ja not_active Expired - Fee Related
-
2003
- 2003-02-05 KR KR1020037013491A patent/KR100593275B1/ko not_active Expired - Fee Related
- 2003-02-05 EP EP03705049A patent/EP1473445B1/en not_active Expired - Lifetime
- 2003-02-05 WO PCT/JP2003/001161 patent/WO2003067043A1/ja not_active Ceased
- 2003-02-05 US US10/473,612 patent/US7169203B2/en not_active Expired - Lifetime
- 2003-02-05 AU AU2003211918A patent/AU2003211918A1/en not_active Abandoned
- 2003-02-05 PL PL03364165A patent/PL364165A1/xx not_active Application Discontinuation
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4381815A (en) | 1980-11-10 | 1983-05-03 | Corning Glass Works | Thermal shock resistant honeycomb structures |
| JPS62163697U (ja) * | 1986-04-08 | 1987-10-17 | ||
| DE3722707A1 (de) | 1987-07-09 | 1989-01-19 | Didier Werke Ag | Wabenkoerper aus einem keramischen werkstoff |
| JPH0647620U (ja) * | 1992-10-22 | 1994-06-28 | イビデン株式会社 | 排気ガス浄化装置 |
| JPH0828246A (ja) | 1994-07-14 | 1996-01-30 | Ibiden Co Ltd | セラミック構造体 |
| JPH11114338A (ja) * | 1997-10-16 | 1999-04-27 | Ngk Insulators Ltd | 高温排ガス処理用のセラミック製フィルタ装置 |
| EP1101910A2 (en) * | 1999-11-15 | 2001-05-23 | Ngk Insulators, Ltd. | Honeycomb structure |
| WO2001051174A1 (fr) | 2000-01-13 | 2001-07-19 | Ngk Insulators, Ltd. | Structure de nid d'abeilles a alveoles triangulaires |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1473445A4 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1535664A1 (en) * | 2003-11-13 | 2005-06-01 | Ngk Insulators, Ltd. | Ceramic honeycomb structure |
| US7465486B2 (en) | 2003-11-13 | 2008-12-16 | Ngk Insulators, Ltd. | Ceramic honeycomb structure |
| EP2130600A3 (en) * | 2008-05-20 | 2010-02-24 | Ibiden Co., Ltd. | Honeycomb structure |
Also Published As
| Publication number | Publication date |
|---|---|
| US7169203B2 (en) | 2007-01-30 |
| KR100593275B1 (ko) | 2006-06-26 |
| EP1473445A1 (en) | 2004-11-03 |
| US20040128991A1 (en) | 2004-07-08 |
| EP1473445A4 (en) | 2006-06-21 |
| JP4157304B2 (ja) | 2008-10-01 |
| KR20030094349A (ko) | 2003-12-11 |
| JP2003227327A (ja) | 2003-08-15 |
| PL364165A1 (pl) | 2004-12-13 |
| AU2003211918A1 (en) | 2003-09-02 |
| EP1473445B1 (en) | 2013-04-03 |
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