WO2001051174A1 - Structure de nid d'abeilles a alveoles triangulaires - Google Patents
Structure de nid d'abeilles a alveoles triangulaires Download PDFInfo
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- WO2001051174A1 WO2001051174A1 PCT/JP2001/000077 JP0100077W WO0151174A1 WO 2001051174 A1 WO2001051174 A1 WO 2001051174A1 JP 0100077 W JP0100077 W JP 0100077W WO 0151174 A1 WO0151174 A1 WO 0151174A1
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- honeycomb structure
- honeycomb
- cross
- structure according
- bonding layer
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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
- B01D46/2474—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the walls along the length of the honeycomb
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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
- B01D46/2425—Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material
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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
- B01D46/2425—Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material
- B01D46/2429—Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material of the honeycomb walls or cells
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B01D46/2425—Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material
- B01D46/2448—Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material of the adhesive layers, i.e. joints between segments
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B01D46/2425—Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material
- B01D46/24494—Thermal expansion coefficient, heat capacity or thermal conductivity
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B01D46/2425—Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material
- B01D46/24495—Young's modulus
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- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
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- 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
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- 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
- B01D46/2466—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the adhesive layers, i.e. joints between segments
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- 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
- B01D46/2482—Thickness, height, width, length or diameter
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B01D46/2484—Cell density, area or aspect ratio
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- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
- B01D46/2488—Triangular
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B01D46/2496—Circular
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
- B01D53/885—Devices in general for catalytic purification of waste gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
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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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2807—Metal other than sintered metal
- F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
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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
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2825—Ceramics
- F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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 [3D] monoliths
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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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/34—Honeycomb supports characterised by their structural details with flow channels of polygonal cross section
Definitions
- the present invention relates to a honeycomb structure used as a filter for collecting and removing particulate matter discharged in a heat engine such as an internal combustion engine or a combustion device such as a boiler.
- a partition wall of a flow hole has a filtering ability, and a predetermined flow hole is used. It is known to use a honeycomb structure having one end sealed and the other end closed for the remaining flow holes.
- honeycomb structure When such a honeycomb structure is used as a filter for collecting particulate matter in exhaust gas, it is necessary to perform a regeneration process of burning and removing the accumulated carbon fine particles. Since local high temperature is unavoidable, there is a problem that large thermal stress is easily generated and cracks are easily generated.
- the present invention has been made in view of such conventional problems, and has as its object to reduce the occurrence of thermal stress during use, to have durability without cracking, and to reduce the pressure loss of fluid. Is to provide a small honeycomb structure. Disclosure of the invention
- the through hole has a triangular cross-sectional shape, and the density of the through hole is less than 54.3 cells / cm2.
- a triangular cell honeycomb structure characterized by the following is provided.
- a honeycomb structure having a cross-sectional shape of a circle, an ellipse, a racetrack shape, or a polygon and having an outer peripheral surface parallel to a flow direction. It has a structure in which honeycomb segments including the outer peripheral surface of a shape divided into an integer n on a plane parallel to the road direction are combined via a bonding layer, and the cell shape of each honeycomb segment is triangular. It is preferable that the angles of the two corners substantially coincide with each other (m is an integer), which is the angle formed by the surface of each honeycomb segment in contact with the bonding layer.
- the honeycomb structure of the present invention may have a structure in which honeycomb segments each having a shape obtained by dividing a cylindrical shape into approximately six equal parts in a plane parallel to the flow path direction are combined into a cylindrical shape via a bonding layer.
- the thickness of the partition walls is 0.32 mm or less.
- the cell density is preferably 15.5 cells Z cm2 or more and less than 54.3 cells Z cm2, and the Young's modulus of the bonding layer material is the honeycomb segment material. Is preferably 20% or less of the Young's modulus.
- the honeycomb segment materials in contact with the bonding layer are provided. It is preferable that the average surface roughness of the portion occupying 0% or more of the area exceeds Ra 0.4 ⁇ m, and that the total heat capacity of all the honeycomb segments constituting the honeycomb structure, It is preferable that the ratio of the total heat capacity of the bonding layer is 30% or less.
- the corners of the cross-sectional shape of the honeycomb segment in the cross section orthogonal to the through holes are rounded with a radius of curvature of 0.3 mm or more, or are chamfered with 0.5 mm or more.
- the corners of the cross-sectional shape of the honeycomb segment in the cross section orthogonal to the through holes are rounded with a radius of curvature of 0.3 mm or more, or are chamfered with 0.5 mm or more.
- the ratio of the total cross-sectional area of the bonding layer to the cross-sectional area of the honeycomb structure in a cross section orthogonal to the flow holes of the honeycomb structure is 15% or less, and further, the ratio is orthogonal to the flow holes of the honeycomb structure.
- the ratio of the sum of the cross-sectional areas of the joining layers to the sum of the cross-sectional areas of the partition walls in the honeycomb structure cross section is preferably 50% or less.
- the ratio of the bonding layer cross-sectional area to the partition wall cross-sectional area is preferably large in the center and small on the outer peripheral side.
- the material of the 82 cam segment was selected from the group consisting of cordierite, SiC, SiN, alumina, mullite, and lithium aluminum silicate (LAS) from the viewpoints of strength, heat resistance, etc. It is preferable that one type be a main crystal phase.
- the honeycomb segment supports a metal having catalytic activity, purifies exhaust gas of a heat engine or a combustion device, or reforms liquid fuel or gaseous fuel. It is preferable to use it.
- the metal having catalytic activity is preferably at least one of Pt, Pd and Rh.
- FIGS. 1 (a), 1 (b) and 1 (c) show an embodiment of a honeycomb structure according to the present invention.
- FIG. 1 (a) is a front view
- FIGS. It is an enlarged view.
- FIG. 2 (a), 2 (b) and 2 (c) show an embodiment of the honeycomb structure according to the present invention.
- FIG. 2 (a) is a front view
- FIG. 2 (b) is a side view
- FIG. c) is a partially enlarged view of FIG. 2 (a).
- FIG. 3 is an explanatory sectional view showing an example of the honeycomb structure.
- FIG. 4 is a partially enlarged view showing a cell structure and a bonding layer of the honeycomb structure.
- the present invention has a large number of flow holes penetrating in the axial direction partitioned by partition walls, the partition walls of the flow holes have filtering ability, and one end of the predetermined flow hole is sealed, and
- the flow holes relate to a honeycomb structure having the other end sealed, wherein the flow holes have a triangular cross-sectional shape, and the density of the flow holes is less than 54.3 cells Z cm 2 It is characterized by the following.
- the flow hole has a triangular cross-sectional shape.
- the present inventor has found that a triangular cell is suitable for reducing the flow pressure loss of a fluid in a honeycomb structure having the above structure.
- the pressure loss of the fluid in the flow path is related to the hydraulic diameter of the cross-sectional shape of the flow hole.
- the present invention a structure is adopted in which one end of a predetermined flow hole is sealed, and the other end of the remaining flow hole is sealed.
- a flow resistance when passing through the partition wall is generated, so that the relationship between the pressure loss and the flow hole shape (cell shape) becomes more complicated.
- the triangular shape in comparison with the same opening area or comparison with the same cell density, the triangular shape has a larger filtration area than the case of a square or larger polygonal cell shape.
- the honeycomb structure has a cell density of 1 5. Less than 5 Cerno cm 2 (1 0 0 cell Z square inch), since the filtration area is insufficient pressure loss increases, in 1 5. 5 cells cm 2 or more Desirably.
- a honeycomb structure having a cross-sectional shape of a circle, an ellipse, a race track shape, or a polygon and having an outer peripheral surface parallel to a flow path direction
- the honeycomb structure has a cross-sectional shape of It has a structure in which honeycomb segments including an outer peripheral surface divided into an integer n by a plane parallel to the flow path direction are combined via a bonding layer, and the cell shape of each honeycomb segment is triangular.
- the angle of one corner is the angle formed by the surface of each honeycomb segment in contact with the bonding layer.
- FIG. 1 (a), 1 (b) and 1 (c) show an embodiment of the above-described honeycomb structure according to the present invention, wherein FIG. 1 (a) is a front view, and FIGS. It is a partially enlarged view.
- honeycomb structure 10 having a circular cross section and an outer peripheral surface parallel to the flow path direction is shown.
- the honeycomb structure 10 includes honeycomb segments 11 a, llb, 11 c, and 11 d including an outer peripheral surface having a shape obtained by dividing a cross-sectional shape into four by a plane parallel to a flow direction, and forming a bonding layer. It has a structure that is combined through 1 and 2. Then, as shown in FIGS.
- each honeycomb segment 11a, 11b, 11c, 11d is a triangle, and the angle of one corner of the triangle ⁇ Is preferably formed so as to substantially coincide with lZm of an angle ⁇ formed by a surface of each of the honeycomb segments 11a, lib, llc, and lid in contact with the bonding layer 12.
- 14 indicates a partition wall
- 15 indicates a flow hole.
- the honeycomb structure of the present invention has a structure in which an 82 cam segment having a shape obtained by dividing a cylindrical shape into approximately six equal parts in a plane parallel to the flow path direction is combined with the cylindrical shape via a bonding layer. Is more preferable for the following reason.
- the radial partition wall and the outer wall in contact with the joining portion of the honeycomb segment can be set in parallel, so that stress concentration at the joint between the segment outer wall and the partition wall can be prevented.
- FIGS. 2 (a), 2 (b) and 2 (c) show an embodiment of the above-described honeycomb structure according to the present invention.
- FIG. 2 (a) is a front view and FIG. 2 (b) is a side view, and
- FIG. 2 (c) is a partially enlarged view of FIG. 2 (a).
- the honeycomb structure 10 has a cylindrical shape obtained by dividing the cylindrical shape into approximately six equal parts on a plane parallel to the flow path direction. It is a structure combined with.
- the outer peripheral surface (outer shape) combined as the honeycomb structure has a cylindrical shape, the holding force from the outer periphery can be evenly transmitted to the inside.
- the triangular shape has a smaller anisotropy in force transmission than the triangular shape, so that local distribution of stress can be prevented.
- the passage resistance of the fluid passing through the cell partition wall is set.
- the thickness of the partition walls is preferably 0.32 mm or less, and more preferably in the range of 0.20 to 0.30 mm.
- the Young's modulus of the material forming the bonding layer is desirably 20% or less, more preferably 1% or less of the Young's modulus of the material forming the honeycomb segments.
- the average surface roughness of a portion occupying at least 30% or more of the surface of the honeycomb segment in contact with the bonding layer is preferably more than Ra 0.4 ⁇ m. .
- the surface roughness Ra is more preferably at least 0.8 micron.
- the ratio of the total heat capacity of all the bonding layers in the honeycomb structure to the total heat capacity of all the honeycomb segments constituting the honeycomb structure is set to 30% or less, more preferably 15% or less. However, it is preferable because the generation of thermal stress during use can be reduced and large durability can be provided so that cracks do not occur in the honeycomb structure.
- the corners of the honeycomb segment cross-sectional shape in a cross section orthogonal to the flow holes of the honeycomb structure are rounded with a radius of curvature of 0.3 mm or more, or 0.5 mm or more.
- the chamfering is preferable because it can reduce the generation of thermal stress during use and can provide large durability so that cracks do not occur in the honeycomb structure.
- the ratio of the total cross-sectional area of the bonding layer to the cross-sectional area of the honeycomb structure in a cross section orthogonal to the through-holes of the honeycomb structure is preferably 17% or less, more preferably 8% or less. preferable. This will be described with reference to FIG. 3.
- the total cross-sectional area SH of the honeycomb structure 10 is
- the total cross-sectional area S s of the bonding layer 12 is the total area of the hatched portion A (cross-sectional portion of the bonding layer 12) in FIG.
- the ratio of the sum of the cross-sectional areas of the joining layers to the sum of the cross-sectional areas of the partition walls in the cross section of the honeycomb structure orthogonal to the flow holes of the honeycomb structure is preferably 50% or less, and 24% or less. It is more preferred that: This will be described with reference to FIG. 4.
- the sum of the cross-sectional areas (shaded areas B) of the bonding layers 12 in the cross section of the honeycomb structure 10 is represented by S s
- the sum of the cross-sectional areas (meshed areas C) of the partition walls 14 Let S be S c, and S S ZS C is 50% or less, which is preferable from the viewpoint of reducing the pressure loss of the force fluid.
- the ratio of the cross-sectional area of the bonding layer to the cross-sectional area of the partition wall is large in the central portion and small on the outer peripheral side in the cross section of the honeycomb structure orthogonal to the flow holes of the honeycomb structure. .
- the bonding layer is dense in the center and coarse in the vicinity of the outer periphery, the trapped amount of carbon fine particles per unit volume in the vicinity of the center is smaller than that in the vicinity of the outer periphery.
- the calorific value near the center where the temperature tends to be high, can be kept low, and since the bonding layer is dense near the center, the heat capacity at that part can be increased. Temperature rise can be kept low. As a result, the temperature difference between the central portion and the outer peripheral side can be reduced, and the thermal stress in the honeycomb structure can be reduced, which is preferable.
- honeycomb segments constituting the honeycomb structure of the present invention are made of cordierite, SiC, SiN, alumina, mullite, and lithium aluminum silicate (LAS) from the viewpoint of strength, heat resistance, and the like. It is preferable that one kind selected from the group be a main crystal phase, and SiC having a high thermal conductivity is particularly preferable in that heat is easily radiated.
- heat-resistant ceramic fiber, ceramic powder, cement, or the like may be used alone or in combination.
- an organic binder, an inorganic binder, or the like may be used as a mixture, if necessary.
- the present invention is not limited thereto.
- the honeycomb structure of the present invention has a large number of flow holes penetrating in the axial direction partitioned by partition walls, and the partition walls of the flow holes have a filtering ability.
- the dust-containing fluid such as a particulate filter for a diesel engine, because it has a structure in which the end of the filter is sealed and the other end of the flow hole is sealed. It can be suitably used for a filter for collecting and removing the water.
- the dust-containing fluid when the dust-containing fluid is allowed to pass through one end face of the honeycomb structure having such a structure, the dust-containing fluid flows into the 82 cam structure from the unsealed flow hole at the one end face side. , And passes through a porous partition wall having a filtering ability, and enters another unsealed flow hole at the other end surface side of the honeycomb structure.
- the particulate matter in the dust-containing fluid is captured by the partition, and the purified fluid from which the particulate matter has been removed is discharged from the other end face of the honeycomb structure.
- the honeycomb structure is periodically heated by a heating means such as a heater. However, it burns and removes particulate matter and regenerates a filter function.
- a metal having catalytic activity as described later may be supported on the honeycomb segments.
- the honeycomb structure of the present invention is to be used as a catalyst carrier for purifying exhaust gas of a heat engine such as an internal combustion engine or reforming a liquid fuel or a gaseous fuel
- a metal having catalytic activity in a honeycomb segment is used.
- Representative examples of metals having catalytic ability include Pt, Pd, and Rh, and it is preferable that at least one of these metals is supported on the honeycomb segment.
- the thickness of the partition wall is 0.3000 mm, the cell density is 240 cells / square inch (37.2 cells / cm 2 ), and the outer peripheral thickness is 0.5 mm.
- a cylindrical shape as shown in Fig. 2 (a), (b), and (c) was parallelized in the flow direction.
- Honeycomb segments 11 1e, 11 f, 11 g, llh, lli, and 11 j divided into six equal parts on the surface are combined into a cylindrical shape via the bonding layer 12.
- the surface roughness in Table 1 indicates the average surface roughness of the entire surface of the 82-cam segment in contact with the bonding layer.
- This 82-cam structure is a diesel exhaust purifying filter having a structure in which a predetermined flow hole is sealed at one end and the remaining flow hole is sealed at the other end.
- the 82 cam structure was subjected to a fluid pressure loss test and a regeneration test. The results are shown in Table 1.
- Table 1 Bulkhead material Young's modulus (Gpa) 42
- the honeycomb structure of the present invention can be preferably used as a filter for collecting and removing particulate matter discharged in a heat engine such as an internal combustion engine or a combustion device such as a boiler.
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Ceramic Engineering (AREA)
- Toxicology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Filtering Materials (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2001225482A AU2001225482A1 (en) | 2000-01-13 | 2001-01-11 | Triangular cell honeycomb structure |
| EP01900654A EP1247556B1 (en) | 2000-01-13 | 2001-01-11 | Triangular cell honeycomb structure |
| DE60109735T DE60109735T2 (de) | 2000-01-13 | 2001-01-11 | Honigwabenstruktur mit dreieckigen zellen |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000005064A JP2001190917A (ja) | 2000-01-13 | 2000-01-13 | 三角セルハニカム構造体 |
| JP2000/5064 | 2000-01-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001051174A1 true WO2001051174A1 (fr) | 2001-07-19 |
Family
ID=18533751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2001/000077 Ceased WO2001051174A1 (fr) | 2000-01-13 | 2001-01-11 | Structure de nid d'abeilles a alveoles triangulaires |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20030000188A1 (ja) |
| EP (1) | EP1247556B1 (ja) |
| JP (1) | JP2001190917A (ja) |
| AU (1) | AU2001225482A1 (ja) |
| DE (1) | DE60109735T2 (ja) |
| WO (1) | WO2001051174A1 (ja) |
| ZA (1) | ZA200205517B (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003067043A1 (en) | 2002-02-05 | 2003-08-14 | Ngk Insulators, Ltd. | Honeycomb structure |
| EP1437168A4 (en) * | 2001-10-15 | 2006-05-24 | Ngk Insulators Ltd | FILTER IN HONEYCOMB |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3893049B2 (ja) * | 2001-11-20 | 2007-03-14 | 日本碍子株式会社 | ハニカム構造体及びその製造方法 |
| WO2003067041A1 (en) | 2002-02-05 | 2003-08-14 | Ibiden Co., Ltd. | Honeycomb filter for exhaust gas decontamination, adhesive, coating material and process for producing honeycomb filter for exhaust gas decontamination |
| EP1495790A4 (en) * | 2002-04-09 | 2005-01-26 | Ibiden Co Ltd | HONEYCOMB FILTER FOR CLARIFYING EXHAUST GAS |
| JP3719232B2 (ja) * | 2002-06-18 | 2005-11-24 | トヨタ自動車株式会社 | 内燃機関のパティキュレートフィルタ |
| JP4890857B2 (ja) * | 2003-03-19 | 2012-03-07 | 日本碍子株式会社 | ハニカム構造体 |
| KR20070086004A (ko) * | 2003-06-10 | 2007-08-27 | 이비덴 가부시키가이샤 | 벌집형 구조체 |
| US7455709B2 (en) * | 2003-07-15 | 2008-11-25 | Ibiden Co., Ltd. | Honeycomb structural body |
| WO2005013333A2 (en) * | 2003-08-01 | 2005-02-10 | Lexco, Inc. | Monolith for use in regenerative oxidizer systems |
| JP2006289237A (ja) * | 2005-04-08 | 2006-10-26 | Ibiden Co Ltd | ハニカム構造体 |
| WO2006137157A1 (ja) * | 2005-06-24 | 2006-12-28 | Ibiden Co., Ltd. | ハニカム構造体 |
| CN101001698B (zh) | 2005-06-24 | 2011-02-09 | 揖斐电株式会社 | 蜂窝结构体 |
| WO2006137161A1 (ja) | 2005-06-24 | 2006-12-28 | Ibiden Co., Ltd. | ハニカム構造体 |
| EP1736219A1 (en) * | 2005-06-24 | 2006-12-27 | Ibiden Co., Ltd. | Honeycomb structure |
| JP4975619B2 (ja) | 2005-06-24 | 2012-07-11 | イビデン株式会社 | ハニカム構造体 |
| WO2006137158A1 (ja) | 2005-06-24 | 2006-12-28 | Ibiden Co., Ltd. | ハニカム構造体 |
| CN100537482C (zh) | 2005-06-24 | 2009-09-09 | 揖斐电株式会社 | 蜂窝结构体 |
| CN101076403B (zh) * | 2005-06-27 | 2010-05-26 | 揖斐电株式会社 | 蜂窝结构体 |
| FR2902348B1 (fr) * | 2006-06-19 | 2008-08-08 | Ceramiques Tech Ind Sa | Corps poreux monolithique a structure en nid d'abeille, notamment filtre a particules pour gaz d'echappement |
| WO2009118875A1 (ja) | 2008-03-27 | 2009-10-01 | イビデン株式会社 | ハニカム構造体 |
| US8584445B2 (en) * | 2009-02-04 | 2013-11-19 | GM Global Technology Operations LLC | Method and system for controlling an electrically heated particulate filter |
| US8097066B2 (en) * | 2009-05-13 | 2012-01-17 | GM Global Technology Operations LLC | Predicting ash loading using an electrically heated particulate filter |
| US8950177B2 (en) * | 2009-06-17 | 2015-02-10 | GM Global Technology Operations LLC | Detecting particulate matter load density within a particulate filter |
| US8341945B2 (en) * | 2009-07-01 | 2013-01-01 | GM Global Technology Operations LLC | Electrically heated particulate filter |
| US8479496B2 (en) * | 2009-07-02 | 2013-07-09 | GM Global Technology Operations LLC | Selective catalytic reduction system using electrically heated catalyst |
| US8443590B2 (en) * | 2009-07-02 | 2013-05-21 | GM Global Technology Operations LLC | Reduced volume electrically heated particulate filter |
| US8475574B2 (en) | 2009-08-05 | 2013-07-02 | GM Global Technology Operations LLC | Electric heater and control system and method for electrically heated particulate filters |
| US8511069B2 (en) * | 2009-08-12 | 2013-08-20 | GM Global Technology Operations LLC | Systems and methods for layered regeneration of a particulate matter filter |
| EP2368619B1 (en) * | 2010-03-26 | 2014-06-25 | Imerys | Ceramic honeycomb structures |
| CN103157331A (zh) * | 2013-03-04 | 2013-06-19 | 同济大学 | 一种高效网孔通道分级空气过滤结构 |
| JP6291390B2 (ja) * | 2014-09-19 | 2018-03-14 | 日本碍子株式会社 | 熱・音波変換ユニット |
| US9813480B2 (en) * | 2015-01-08 | 2017-11-07 | Instart Logic, Inc. | Placeholders for dynamic components in HTML streaming |
| KR20160094754A (ko) * | 2015-02-02 | 2016-08-10 | 삼성전자주식회사 | 디스플레이 장치 및 그 제어 방법 |
| JP6534899B2 (ja) * | 2015-09-29 | 2019-06-26 | 日本碍子株式会社 | ハニカム構造体 |
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| JPH03121213A (ja) * | 1989-09-30 | 1991-05-23 | Ibiden Co Ltd | 排気ガス浄化装置のハニカムフィルター |
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| US5914187A (en) * | 1996-01-12 | 1999-06-22 | Ibiden Co., Ltd. | Ceramic structural body |
| JP2000279729A (ja) * | 1999-03-30 | 2000-10-10 | Ibiden Co Ltd | セラミックフィルタユニット及びその製造方法、セラミックフィルタ |
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| US4335023A (en) * | 1980-01-24 | 1982-06-15 | Engelhard Corporation | Monolithic catalyst member and support therefor |
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| JP3862458B2 (ja) * | 1999-11-15 | 2006-12-27 | 日本碍子株式会社 | ハニカム構造体 |
| US6407325B2 (en) * | 1999-12-28 | 2002-06-18 | Lg Electronics Inc. | Background music play device and method thereof for mobile station |
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2000
- 2000-01-13 JP JP2000005064A patent/JP2001190917A/ja not_active Withdrawn
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2001
- 2001-01-11 WO PCT/JP2001/000077 patent/WO2001051174A1/ja not_active Ceased
- 2001-01-11 US US10/169,560 patent/US20030000188A1/en not_active Abandoned
- 2001-01-11 AU AU2001225482A patent/AU2001225482A1/en not_active Abandoned
- 2001-01-11 DE DE60109735T patent/DE60109735T2/de not_active Expired - Fee Related
- 2001-01-11 EP EP01900654A patent/EP1247556B1/en not_active Expired - Lifetime
-
2002
- 2002-07-10 ZA ZA200205517A patent/ZA200205517B/en unknown
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| US4417908A (en) * | 1982-02-22 | 1983-11-29 | Corning Glass Works | Honeycomb filter and method of making it |
| JPH03121213A (ja) * | 1989-09-30 | 1991-05-23 | Ibiden Co Ltd | 排気ガス浄化装置のハニカムフィルター |
| JPH09158710A (ja) * | 1995-12-08 | 1997-06-17 | Nippon Soken Inc | ディーゼル排ガス浄化フィルタ |
| US5914187A (en) * | 1996-01-12 | 1999-06-22 | Ibiden Co., Ltd. | Ceramic structural body |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1437168A4 (en) * | 2001-10-15 | 2006-05-24 | Ngk Insulators Ltd | FILTER IN HONEYCOMB |
| WO2003067043A1 (en) | 2002-02-05 | 2003-08-14 | Ngk Insulators, Ltd. | Honeycomb structure |
| EP1473445A4 (en) * | 2002-02-05 | 2006-06-21 | Ngk Insulators Ltd | hONEYCOMB STRUCTURE |
| US7169203B2 (en) | 2002-02-05 | 2007-01-30 | Ngk Insulators, Ltd. | Honeycomb structure |
Also Published As
| Publication number | Publication date |
|---|---|
| DE60109735D1 (de) | 2005-05-04 |
| EP1247556B1 (en) | 2005-03-30 |
| DE60109735T2 (de) | 2006-02-23 |
| AU2001225482A1 (en) | 2001-07-24 |
| EP1247556A1 (en) | 2002-10-09 |
| EP1247556A4 (en) | 2003-04-09 |
| ZA200205517B (en) | 2003-08-18 |
| US20030000188A1 (en) | 2003-01-02 |
| JP2001190917A (ja) | 2001-07-17 |
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