WO2016098835A1 - ハニカム構造体 - Google Patents
ハニカム構造体 Download PDFInfo
- Publication number
- WO2016098835A1 WO2016098835A1 PCT/JP2015/085279 JP2015085279W WO2016098835A1 WO 2016098835 A1 WO2016098835 A1 WO 2016098835A1 JP 2015085279 W JP2015085279 W JP 2015085279W WO 2016098835 A1 WO2016098835 A1 WO 2016098835A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- partition wall
- inlet
- outlet
- honeycomb structure
- face
- Prior art date
Links
- 230000004323 axial length Effects 0.000 claims abstract description 19
- 238000005192 partition Methods 0.000 claims description 87
- 239000003054 catalyst Substances 0.000 claims description 8
- 241000264877 Hippospongia communis Species 0.000 description 42
- 238000007789 sealing Methods 0.000 description 9
- 239000000919 ceramic Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 229910000505 Al2TiO5 Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 235000010980 cellulose Nutrition 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
- 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
- B01D39/2068—Other inorganic materials, e.g. ceramics
- B01D39/2093—Ceramic foam
-
- 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
- B01D46/247—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
- B01D46/2476—Monolithic structures
-
- 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
- B01D46/2482—Thickness, height, width, length or diameter
-
- 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
- B01D46/2484—Cell density, area or aspect ratio
-
- 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
-
- 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
Definitions
- the present invention relates to a honeycomb structure.
- Such a honeycomb structure is expected to have a smaller pressure loss than a honeycomb structure sealed with a plug, but the effect of reducing the pressure loss is not sufficient.
- the present invention has been made in view of the above problems, and an object thereof is to provide a honeycomb structure having a high pressure loss reduction effect.
- the honeycomb structure according to the present invention includes a plurality of first flow paths opened at one end face and closed at the other end face, and a plurality of second flow paths closed at the one end face and opened at the other end face. It is a column-shaped and porous honeycomb structure which forms.
- the honeycomb structure includes a central partition in which cross-sectional areas of the first flow paths and the second flow paths are constant in the axial direction, and the first flow from the central partition toward the other end surface.
- a second end-side inclined partition wall in which a cross-sectional area of the path is reduced and a cross-sectional area of each of the second flow paths is enlarged.
- the axial direction length of the said other end side inclination partition is 4 mm or more.
- the axial length of the other end side inclined partition wall is secured to 4 mm or more, it is possible to sufficiently ensure the effect of reducing the pressure loss due to the slope of the inclined partition wall.
- the manufacturing becomes difficult and the pressure loss reduction effect is not improved so much. It is preferable that it is 20 mm or less.
- the cross-sectional area of each of the first flow paths is further increased from the central partition toward the one end surface, and the cross-sectional area of each of the second flow paths is reduced.
- One end side inclined partition wall is provided.
- the one end surface may be a gas inlet side, and the other end surface may be a gas outlet side.
- a honeycomb structure having a high pressure loss reduction effect is provided.
- FIG. 1 is a perspective view of a honeycomb filter 100 according to the first embodiment.
- FIG. 2 is a II-II cross-sectional view of the central partition 10 cent of the honeycomb structure 10 of FIG. 3A is an enlarged view of the end face of the inlet (one end) end face 10E in of FIG. 1, and FIG. 3B is a cross-sectional view taken along the line bb of FIG. 3A.
- 4A is an enlarged view of the end face of the outlet (other end side) end face 10E out of FIG. 1
- FIG. 4B is a cross-sectional view taken along line bb of FIG. 4A.
- FIG. 5 is a schematic view showing a method for manufacturing a honeycomb filter according to the first embodiment.
- a honeycomb filter 100 includes a columnar and porous honeycomb structure 10 as shown in FIG.
- the honeycomb structure 10 has an inlet end face (one end face) 10E in and an outlet end face (other end face) 10E out .
- the honeycomb structure 10 has a plurality of inlet channels (a plurality of first channels) 70H in opened at the inlet end surface 10E in and closed at the outlet end surface 10E out , and an outlet end surface closed at the inlet end surface 10E in.
- a plurality of outlet channels (a plurality of second channels) 70H out opened at 10E out are formed, and these channels extend in the axial direction of the honeycomb structure 10.
- honeycomb structure an inlet-side inclined partition wall (one side inclined partition wall) 10 in having an inlet end face 10E in, the outlet side inclined partition wall (the other end side inclined partition wall) having an exit end face 10E out 10 out, and these A central partition 10 cent between the two.
- the outer diameter of the honeycomb structure 10 can be set to, for example, 50 to 250 mm.
- the axial length of the honeycomb structure 10 can be set to, for example, 50 to 300 mm.
- FIG. 2 is a cross-sectional view of the central partition 10 cent of the honeycomb structure 10.
- the central partition 10 cent forms a large number of inlet channels 70H in and a large number of outlet channels 70H out each having a substantially constant cross-sectional area along the axial direction.
- the middle partition 10 cent so that one of the inlet flow passage 70H in the adjacent three other inlet passage 70H in, and adjacent to the three outlet passage 70H out, the inlet channel 70H in and outlet channel 70H out are regularly arranged.
- One outlet channel 70H out is adjacent to the six inlet channels 70H in and is not adjacent to the other outlet channel 70H out .
- Each flow channel is adjacent to a total of six flow channels, each via a partition wall.
- the cross-sectional shapes of the inlet channel 70H in and the outlet channel 70H out are substantially hexagonal.
- the thickness of the portion W separating the two flow paths can be set to 0.10 to 0.35 mm, for example.
- the density of the flow path can be, for example, 150 to 400 cpsi.
- the inlet-side inclined partition wall 10 in gradually expands the cross-sectional area of the inlet channel 70H in from the central partition wall 10 cent toward the inlet end surface 10E in as compared to the central partition wall 10 cent , and the outlet channel 70H out the cross-sectional area gradually close shrinking, are inclined relative to the axis of the inlet channel 70H in and outlet channel 70H out.
- the inlet side inclined partition wall 10 in from the central partition wall 10 cent towards the inlet end face 10E in gradually expanding the cross-sectional area of the inlet flow passage 70H in a substantially hexagonal in central bulkhead 10 cent
- the cross-sectional shape is triangular, and the cross-sectional area of the outlet flow path 70H out is set to 0 before reaching the inlet end face 10E in .
- the vertices of each triangle forming the enlarged inlet passage 70H in reaches the center of the outlet passage 70H out, thereby, the outlet passage 70H out is sealed.
- the thickness of the plate-like portion separating the two flow paths in the inlet side inclined partition wall 10 in can be set to 0.10 to 0.35 mm, for example. This thickness can be a thickness within ⁇ 10% with respect to the thickness of the partition in the central partition 10 cent .
- outlet side inclined partition wall (other end side inclined partition wall) 10 out is shown.
- the outlet-side inclined partition wall 10 out gradually expands the cross-sectional area of the outlet channel 70H out from the central partition wall 10 cent toward the outlet end face 10E out as compared to the central partition wall 10 cent , and the inlet channel 70H in the cross-sectional area gradually close shrinking, are inclined relative to the axis of the inlet channel 70H in and outlet channel 70H out.
- the outlet side inclined partition wall 10 out comprises, from the central partition wall 10 cent to the outlet end face 10E out, each-edge portions of the cross-sectional area of the outlet passage 70H out is substantially hexagonal in central bulkhead 10 cent
- the cross-sectional area of the outlet flow path 70H out is set to 0 before it gradually expands into a hexagonal shape and reaches the outlet end face 10E out .
- the apex of each hexagonal enlarged outlet passage 70H out reaches near the center of the inlet flow passage 70H in, thereby, the inlet flow passage 70H in is sealed.
- the thickness of the plate-like portion separating the two flow paths in the outlet-side inclined partition wall 10 out can be set to 0.10 to 0.8 mm, for example.
- This thickness can be equal to (for example, 0.9 times or more) the partition wall thickness in the central partition wall 10 cent or greater than the partition wall thickness, and the upper limit thereof is the two inlet channels 70H adjacent to the central partition wall 10 cent.
- the length of the opposing sides of the substantially hexagonal contour of in can be increased to (see FIG. 2).
- the aperture ratio at the inlet end face 10E in can be made larger than the aperture ratio at the outlet end face 10E out .
- the axial length H out of the outlet side inclined partition wall 10 out is 4mm or more.
- the upper limit of H out is not particularly limited, but can be set to 20 mm or less, for example.
- There is no particular limitation on the axial length H in of the inlet-side inclined partition wall 10 in but it can be, for example, 4 mm or more, or 20 mm or less.
- the axial lengths H in and H out of the inclined partition walls may have variations for each flow path, and in this case, the arithmetic average thereof only needs to satisfy the above-described requirements.
- the material of the honeycomb structure 10 is a porous ceramic and has pores that can collect particles such as soot while allowing gas to pass therethrough.
- ceramics are aluminum titanate, silicon carbide, cordierite.
- Aluminum titanate can include magnesium, silicon, and the like.
- the porosity of the partition walls of the honeycomb structure 10 can be set to 40 to 70%, for example.
- a catalyst may be supported on the surface of the honeycomb structure 10.
- the catalyst are particles of at least one metal element selected from the group consisting of Pt, Pd, Rh, silver, vanadium, chromium, manganese, iron, cobalt, nickel, copper, or zeolite catalyst.
- the particle size of the catalyst can be, for example, 1 nm to 10 ⁇ m.
- the catalyst may be directly held on the surface of the honeycomb structure 10 or may be held on a carrier held on the honeycomb structure.
- the support may function as a cocatalyst.
- the support examples include alumina, silica, magnesia, titania, zirconia, ceria, oxides such as La 2 O 3 , BaO, and zeolite, or composite oxide particles containing one or more of these.
- the particle size of the carrier can be 0.1 to 100 ⁇ m, for example.
- Such a honey-comb filter 100 can have a low initial pressure loss compared with the honey-comb filter 100 which seals a flow path with a plug.
- the effect of reducing the pressure loss due to the abutment surface of the inlet flow passage 70H in is the slope the outlet side inclined partition wall 10 out high.
- the abutting surface of the inlet channel 70Hin is in relation to the channel axis as in the conventional plug seal. Compared to the case of a right angle, the abutting surface is sufficiently inclined with respect to the axis, so that the pressure loss can be sufficiently reduced. Therefore, the initial pressure loss of the honeycomb filter 100 can be suppressed.
- honey-comb filter a ceramic raw material is extruded using an extruder, and a honeycomb formed body having the same cross-sectional shape as the central partition 10 cent is manufactured.
- the honeycomb formed body has an outlet passage 70H out of the inlet flow passage 70H in and non-sealing the unsealed opening while penetrating respectively.
- the composition of the ceramic raw material may be anything that gives a porous ceramic after firing.
- a ceramic raw material, an organic binder, a pore forming agent, a solvent, and an additive added as necessary can be included.
- Ceramic raw material is a powder containing elements constituting ceramic.
- the binder can be an organic binder, and examples thereof include celluloses such as methylcellulose, carboxymethylcellulose, hydroxyalkylmethylcellulose, and sodium carboxymethylcellulose; alcohols such as polyvinyl alcohol; and lignin sulfonate.
- the additive include a lubricant, a plasticizer, and a dispersant.
- the cross-sectional shape of the inlet flow passage 70H in becomes triangular, partition wall with each other completely crimped the outlet passage 70H out, outlet stream
- the path 70H out is sealed. That is, the outlet channel 70H out is closed at the inlet end face 10E in .
- vibration or ultrasonic waves may be applied to the sealing jig 400.
- an outlet-side inclined partition wall 10 out is formed on the outlet end face 10E out .
- Projection of the sealing jig to be inserted into the outlet passage 70H out may be a hexagonal pyramid shape. Then, after drying as necessary, the honeycomb formed body 100 ′ with both end faces sealed is fired to obtain a honeycomb structure.
- the catalyst can be supported on the honeycomb structure 10 by a known method.
- this invention is not limited to the said embodiment, A various deformation
- the arrangement of the inlet channel and the outlet channel, that is, the number of channels adjacent to each channel is not limited to the above embodiment.
- one of the inlet flow passage 70H in is adjacent to four other of the inlet flow passage 70H in, and to be adjacent to the two outlet flow passages 70H out, and one outlet channel 70H out is,
- Each flow path can be arranged so as to be adjacent to the six inlet flow paths 70H in and not adjacent to the other outlet flow paths 70H out .
- “two channels are adjacent” can mean that the two channels are separated in the thickness direction of the partition via one partition.
- the shape of the inclined partition may be any shape as long as the cross-sectional area of each inlet channel is reduced and the cross-sectional area of each outlet channel is enlarged from the central partition toward the other end surface. Can be appropriately modified according to the cross-sectional shape of each flow path and the arrangement of the flow paths.
- cross-sectional shape of the flow path is not particularly limited to the above embodiment, and may be a polygon such as a quadrangle or an octagon, a circle, or the like.
- the honeycomb structure 10 of the above embodiment has a structure having an inclined inlet partition wall on the inlet side, but the structure is not implemented even if the inlet channel is sealed by a plug at the inlet end and does not have the inlet side inclined partition wall. Is possible.
- the outer shape of the filter may not be a cylindrical body, and may be, for example, a quadrangular prism.
- the outer diameter is 118.4 mm, the length is 113.4 mm, the cell density is 360 cpsi, the wall thickness is 10 mil (0.25 mm), the inlet end opening ratio is 42%, the outlet end opening ratio is 27%, the partition wall porosity is 58%, The average pore diameter was 18 ⁇ m.
- the axial length H in of the inlet side inclined partition wall and the axial length H out of the outlet side inclined partition wall were 2 to 3 mm (average 2.5 mm) and 2 to 3 mm (average 2.5 mm), respectively.
- the pressure loss when supplying 600 Nm 3 / h of air at room temperature was 5.80 kPa.
- Reference Example 2 The axial length H in the entrance side inclined partition wall 0, i.e., except for sealing the plug inlet-side is as in Reference Example 1.
- the pressure loss was 6.00 kPa.
- Example 1 The same as Comparative Example 1 except that the axial length H out of the outlet-side inclined partition wall was 4 to 5 mm (average 4.5 mm). The pressure loss was 4.18 kPa. The results are shown in Table 1.
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
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Abstract
Description
(第1実施形態)
本実施形態に係るハニカムフィルタ100は、図1に示すような柱状で多孔質のハニカム構造体10を備える。ハニカム構造体10は、入口端面(一端面)10Ein及び出口端面(他端面)10Eoutを有する。ハニカム構造体10は、入口端面10Einで開放されて出口端面10Eoutで閉じられた複数の入口流路(複数の第1流路)70Hin、及び、入口端面10Einで閉じられて出口端面10Eoutで開放された複数の出口流路(複数の第2流路)70Houtを形成し、これらの流路はハニカム構造体10の軸方向に延びている。また、ハニカム構造体10は、入口端面10Einを有する入口側傾斜隔壁(一端側傾斜隔壁)10in、出口端面10Eoutを有する出口側傾斜隔壁(他端側傾斜隔壁)10out、及び、これらの間にある中央隔壁10centを有する。
例えば、入口流路及び出口流路の配置、すなわち各流路に隣接する流路の数も、上記実施形態に限定されない。例えば、1つの入口流路70Hinが、4つの他の入口流路70Hinと隣接し、かつ、2つの出口流路70Houtと隣接するように、及び、1つの出口流路70Houtが、6つの入口流路70Hinと隣接し、他の出口流路70Houtとは隣接しないように、各流路が配置されることができる。なお、本明細書において、「2つの流路が隣接する」ことは、2つの流路が1つの隔壁を介して隔壁の厚み方向に隔てられることを意味することができる。
触媒を付着させていない、上記実施形態の図1~図4に示すような構造を有するコージェライト製の多孔質のハニカム構造体を用意した。外径は118.4mm、長さ113.4mm、セル密度は360cpsi、壁厚み10mil(0.25mm)、入口端の開口率42%、出口端の開口率27%、隔壁の空隙率58%、平均空孔径18μmであった。入口側傾斜隔壁の軸方向長さHin及び出口側傾斜隔壁の軸方向長さHoutはそれぞれ、2~3mm(平均2.5mm)、2~3mm(平均2.5mm)とした。室温で600Nm3/hの空気を供給した際の圧力損失は、5.80kPaであった。
入口側傾斜隔壁の軸方向長さHinを0、すなわち、入口側をプラグにより封口する以外は参照例1と同様にした。圧力損失は、6.00kPaであった。
出口側傾斜隔壁の軸方向長さHoutを0、すなわち、出口側をプラグにより封口する以外は参照例1と同様にした。圧力損失は、6.86kPaであった。
入口側傾斜隔壁の軸方向長さHinを0及び出口側傾斜隔壁の軸方向長さHout、すなわち、入口側及び出口側の両方をプラグにより封口する以外は参照例1と同様にした。圧力損失は、7.67kPaであった。
これらの実験からは、入口側に傾斜隔壁を設けるよりも、出口側に傾斜隔壁を設ける方が、圧力損失の低下に効果的であることがわかる。
セル密度を360cpsiから250cpsiに変更した。セル密度を変更したことにより、入口側開口率が42%から43%に、出口側開口率が27%から30%になった。上記以外は参照例1と同様にした。圧力損失は4.46kPaであった。
Claims (5)
- 一端面で開放されて他端面で閉じられた複数の第1流路、及び、前記一端面で閉じられて前記他端面で開放された複数の第2流路を形成する柱状で多孔質のハニカム構造体であって、
各前記第1流路及び各前記第2流路の断面積がそれぞれ軸方向に一定である中央隔壁と、
前記中央隔壁から前記他端面に向かって、各前記第1流路の断面積が縮小され、かつ、各前記第2流路の断面積が拡大される、他端側傾斜隔壁と、を備え、
前記他端側傾斜隔壁の軸方向長さは4mm以上である、ハニカム構造体。 - 前記他端側傾斜隔壁の軸方向長さは20mm以下である、請求項1記載の、ハニカム構造体。
- 前記ハニカム構造体は、さらに、前記中央隔壁から前記一端面に向かって、各前記第1流路の断面積が拡大され、かつ、各前記第2流路の断面積が縮小される、一端側傾斜隔壁を有する、請求項1又は2に記載のハニカム構造体。
- 前記一端面はガスの入口側であり、前記他端面はガスの出口側である、請求項1~3のいずれか1項に記載のハニカム構造体。
- 請求項1~4のいずれか1項に記載のハニカム構造体と、触媒と、を備えるハニカムフィルタ。
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EP15870037.7A EP3235565A4 (en) | 2014-12-17 | 2015-12-16 | Honeycomb structured body |
JP2016564894A JPWO2016098835A1 (ja) | 2014-12-17 | 2015-12-16 | ハニカム構造体 |
US15/537,221 US20170354913A1 (en) | 2014-12-17 | 2015-12-16 | Honeycomb structured body |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2020059012A (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
JP2020059010A (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
JP2020059636A (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
WO2020075604A1 (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
WO2020075613A1 (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
WO2020075602A1 (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
Families Citing this family (1)
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USD894361S1 (en) * | 2018-02-20 | 2020-08-25 | Ngk Insulators, Ltd. | Catalyst carrier for exhaust gas purification |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08508199A (ja) * | 1993-04-05 | 1996-09-03 | ストッベ,ペル | フィルタ本体の試料の中の通路を閉じる方法 |
JP2004019498A (ja) * | 2002-06-13 | 2004-01-22 | Toyota Motor Corp | 排ガス浄化フィルタ触媒 |
JP2004042440A (ja) * | 2001-08-28 | 2004-02-12 | Denso Corp | 排ガス浄化フィルタ及びその製造方法 |
JP2004321848A (ja) * | 2003-04-21 | 2004-11-18 | Ngk Insulators Ltd | ハニカム構造体及びその製造方法 |
JP2005169249A (ja) * | 2003-12-11 | 2005-06-30 | Ngk Insulators Ltd | ハニカム構造体 |
JP2006272318A (ja) * | 2005-03-01 | 2006-10-12 | Denso Corp | 排ガス浄化フィルタの製造方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015133435A1 (ja) * | 2014-03-03 | 2015-09-11 | 住友化学株式会社 | ハニカムフィルタ |
-
2015
- 2015-12-16 WO PCT/JP2015/085279 patent/WO2016098835A1/ja active Application Filing
- 2015-12-16 US US15/537,221 patent/US20170354913A1/en not_active Abandoned
- 2015-12-16 JP JP2016564894A patent/JPWO2016098835A1/ja active Pending
- 2015-12-16 EP EP15870037.7A patent/EP3235565A4/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08508199A (ja) * | 1993-04-05 | 1996-09-03 | ストッベ,ペル | フィルタ本体の試料の中の通路を閉じる方法 |
JP2004042440A (ja) * | 2001-08-28 | 2004-02-12 | Denso Corp | 排ガス浄化フィルタ及びその製造方法 |
JP2004019498A (ja) * | 2002-06-13 | 2004-01-22 | Toyota Motor Corp | 排ガス浄化フィルタ触媒 |
JP2004321848A (ja) * | 2003-04-21 | 2004-11-18 | Ngk Insulators Ltd | ハニカム構造体及びその製造方法 |
JP2005169249A (ja) * | 2003-12-11 | 2005-06-30 | Ngk Insulators Ltd | ハニカム構造体 |
JP2006272318A (ja) * | 2005-03-01 | 2006-10-12 | Denso Corp | 排ガス浄化フィルタの製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3235565A4 * |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020059012A (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
WO2020075610A1 (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
JP2020059010A (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
JP2020059636A (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
WO2020075604A1 (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
WO2020075601A1 (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
WO2020075613A1 (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
WO2020075602A1 (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
WO2020075603A1 (ja) * | 2018-10-12 | 2020-04-16 | イビデン株式会社 | ハニカム構造体 |
JP7154931B2 (ja) | 2018-10-12 | 2022-10-18 | イビデン株式会社 | ハニカム構造体 |
JP7213054B2 (ja) | 2018-10-12 | 2023-01-26 | イビデン株式会社 | ハニカム構造体 |
JP7253892B2 (ja) | 2018-10-12 | 2023-04-07 | イビデン株式会社 | ハニカム構造体 |
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