CN109475815A - 废气净化过滤器 - Google Patents
废气净化过滤器 Download PDFInfo
- Publication number
- CN109475815A CN109475815A CN201780029763.0A CN201780029763A CN109475815A CN 109475815 A CN109475815 A CN 109475815A CN 201780029763 A CN201780029763 A CN 201780029763A CN 109475815 A CN109475815 A CN 109475815A
- Authority
- CN
- China
- Prior art keywords
- emission control
- control filter
- exhaust emission
- partition
- catalytic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003197 catalytic effect Effects 0.000 claims abstract description 87
- 238000005192 partition Methods 0.000 claims abstract description 46
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 230000004888 barrier function Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 53
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 20
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 18
- 239000002002 slurry Substances 0.000 claims description 14
- 239000011800 void material Substances 0.000 claims description 14
- 229910052697 platinum Inorganic materials 0.000 claims description 11
- 229910052763 palladium Inorganic materials 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 229910052783 alkali metal Inorganic materials 0.000 claims description 6
- 150000001340 alkali metals Chemical class 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 2
- 239000013618 particulate matter Substances 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 42
- 239000003054 catalyst Substances 0.000 description 28
- 239000005022 packaging material Substances 0.000 description 25
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 238000002485 combustion reaction Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- 206010000269 abscess Diseases 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- 239000000446 fuel Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 239000004094 surface-active agent Substances 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 5
- 229910052792 caesium Inorganic materials 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 229910000510 noble metal Inorganic materials 0.000 description 5
- 229910052700 potassium Inorganic materials 0.000 description 5
- 239000002912 waste gas Substances 0.000 description 5
- 239000004215 Carbon black (E152) Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910000420 cerium oxide Inorganic materials 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 208000010553 multiple abscesses Diseases 0.000 description 4
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 4
- 241000894007 species Species 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 3
- 229910002089 NOx Inorganic materials 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052788 barium Inorganic materials 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000004453 electron probe microanalysis Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 230000010718 Oxidation Activity Effects 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- -1 aluminium oxide Chemical class 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920000747 poly(lactic acid) Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229920002261 Corn starch Polymers 0.000 description 1
- 241001269238 Data Species 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910017569 La2(CO3)3 Inorganic materials 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 239000008120 corn starch Substances 0.000 description 1
- 229940099112 cornstarch Drugs 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 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 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 238000007789 sealing Methods 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
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—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 in combination with other devices
- F01N3/035—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 in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
-
- 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
-
- 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
-
- 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
- B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
-
- 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
- B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
- B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/44—Palladium
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/58—Platinum group metals with alkali- or alkaline earth metals
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/63—Platinum group metals with rare earths or actinides
-
- B01J35/19—
-
- B01J35/56—
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0018—Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0215—Coating
- B01J37/0219—Coating the coating containing organic compounds
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/024—Multiple impregnation or coating
- B01J37/0248—Coatings comprising impregnated particles
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0051—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity
- C04B38/0054—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity the pores being microsized or nanosized
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0051—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity
- C04B38/0058—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore size, pore shape or kind of porosity open porosity
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1021—Platinum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1023—Palladium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1025—Rhodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/102—Platinum group metals
- B01D2255/1026—Ruthenium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/10—Noble metals or compounds thereof
- B01D2255/104—Silver
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/202—Alkali metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/202—Alkali metals
- B01D2255/2022—Potassium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/202—Alkali metals
- B01D2255/2027—Sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/204—Alkaline earth metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/204—Alkaline earth metals
- B01D2255/2042—Barium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/204—Alkaline earth metals
- B01D2255/2045—Calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/204—Alkaline earth metals
- B01D2255/2047—Magnesium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/206—Rare earth metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/206—Rare earth metals
- B01D2255/2063—Lanthanum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/206—Rare earth metals
- B01D2255/2065—Cerium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20715—Zirconium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20738—Iron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20792—Zinc
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/209—Other metals
- B01D2255/2092—Aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/908—O2-storage component incorporated in the catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/915—Catalyst supported on particulate filters
- B01D2255/9155—Wall flow filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/92—Dimensions
- B01D2255/9202—Linear dimensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/90—Physical characteristics of catalysts
- B01D2255/92—Dimensions
- B01D2255/9205—Porosity
-
- 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
- F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
-
- 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
- F01N2510/00—Surface coverings
- F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
- F01N2510/068—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings
- F01N2510/0682—Surface coverings for exhaust purification, e.g. catalytic reaction characterised by the distribution of the catalytic coatings having a discontinuous, uneven or partially overlapping coating of catalytic material, e.g. higher amount of material upstream than downstream or vice versa
-
- 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
Abstract
本发明所解决的问题在于提供可有效处理废气中颗粒物质的废气净化过滤器。本发明提供一种废气净化过滤器,其包括包含多个多孔隔板的基材,其中所述隔板形成废气流动路径,在所述隔板上提供多孔催化层,并且在所述隔板的总长的至少20%上在其纵向方向上提供具有10μm或更大的厚度的所述催化层,并且从流出侧起15mm的所述隔板上不存在具有10μm或更大的厚度的所述催化层。
Description
技术领域
本发明涉及一种废气净化过滤器。
背景技术
从燃烧燃料的内燃机、尤其从高压燃料喷射内燃机排放的废气中含有颗粒物质(PM)。PM包含:包括由燃料燃烧产生的烟灰和其他碳原子的组分(例如,碳基物质);包含未燃烧燃料(烃)或未燃烧油的可溶性有机组分(下文视情况称作“SOF”);以及痕量的硫酸盐。PM被认为是一种污染大气的物质并对动植物生命具有不利影响,并且减少PM目前日渐成为汽车工业中的一个重要问题。
出于这个理由,当前正在开发借助柴油颗粒物过滤器(DPF)的捕集PM的方法作为减少PM的方法。然而,对可被DPF捕集的PM的量存在限制,并且捕集的PM必须使用外部能量等移除。因此这不适合于对废气进行连续处理并且需要安装外部装置,因此存在成本以及尤其是废气处理装置的尺寸增加方面的问题。
此外,已提出借助废气催化剂(氧化催化剂)来处理废气中的SOF、烃和一氧化碳的方法。大体而言,废气催化剂绝大部分是通过形成催化剂组分浆料并将载体均匀地浸泡在该浆料中并且然后烘烤载体来制备的。因此,已发现当废气流入催化剂组分(催化层)时,废气(特别是具有长碳链的烃气体)的气体扩散性质有所降低,并且因此不能充分展现净化废气的能力。此外,通常将多孔结构用于载体以保持催化层,但由于在大空间速度条件下对废气扩散的限制,孔尺寸可能产生废气去除率的降低。
例如,专利文件1和专利文件2提出了NOx吸留和还原催化剂,其中通过将NOx吸留剂和贵金属负载于包含多孔结构(被提供有具有特定尺寸的孔)的涂层上,废气扩散性质得到改进,以便改进NOx净化效率。
引用列表
专利文献
PTL 1:JP 2002-191988 A
PTL 2:JP 2002-253698 A
发明内容
本发明的发明人发现了一种用于废气净化过滤器的构造,该构造使得有可能实现废气中颗粒物质的有效处理。针对这一背景设计本发明,并且发明目的在于提供一种废气净化过滤器,其中在PM重复再生时发生的压力耗损滞后得到改进,并且废气中的颗粒物质可被有效处理。本发明的另一个目的在于提供上述废气净化过滤器的结构和生产所述过滤器的方法。
本发明提供一种废气净化过滤器,其包括包含多个多孔隔板的基材,其中所述隔板形成废气流动路径,在隔板上提供多孔催化层,并且在隔板的总长的至少20%上在其纵向方向上提供具有10μm或更大厚度的催化层,并且从流出侧起15mm的隔板上不存在具有10μm或更大厚度的催化层。
根据本发明的一个模式,形成催化层的部分的催化剂组分的施加量根据催化层中的孔体积和催化剂组分的比重变化。
根据本发明的一个模式,催化层中由有机成孔材料形成的孔的平均直径介于1与5μm之间。
根据本发明的一个模式,催化层的空隙比不大于50%。
根据本发明的一个模式,施加包括催化剂组分和有机成孔材料的浆料以便形成催化层。
根据本发明的一个模式,有机成孔材料的平均长度/直径比是1.5或更小。
根据本发明的一个模式,基材隔板的空隙比介于40%与60%之间。
根据本发明的一个模式,基材隔板中孔的平均直径介于10μm与20μm之间。
根据本发明的一个模式,催化剂组分可包括铂和钯的至少一种,并且还可包括碱金属和稀土金属的至少一种。
根据本发明的一个模式,催化层的厚度介于10μm与50μm之间。
本发明的一个模式提供用于生产上述废气净化过滤器的方法,所述方法包括施加包括催化剂组分和有机成孔材料的浆料以便形成催化层中的孔的步骤。
根据本发明的一个模式,在用于生产上述废气净化过滤器的方法中有机成孔材料的平均长度/直径比是1.5或更小。
本发明使得可提供一种过滤器,其不损害关于PM捕集效率的性能,并且还可借助催化剂维持CO和HC氧化物处理效率,同时还允许在生产废气净化过滤器时更短的干燥时间。
附图简述
[图1]图1是示出根据本发明的实施方案的模式的废气净化过滤器的示意图;以及
[图2]图2是示出从SEM图像获得的空隙比与从汞孔率计的测量结果获得的空隙比之间的相关性的图。
实施方案的描述
下文将参考附图来描述本发明的实施方案的模式,但本发明明显不受该实施方案的模式限制。
(实施方案的模式1)
根据该实施方案的模式的废气净化过滤器的特征在于,事实上所述废气净化过滤器包括包含多个多孔隔板的基材,该隔板形成废气流动路径,在隔板上提供由有机成孔材料形成的多孔催化层,并且在隔板的总长的至少20%上在其纵向方向上提供具有10μm或更大厚度的催化层,并且从流出侧起15mm的气体流入侧隔板上不存在具有10μm或更大厚度的催化层。
根据该实施方案的模式的废气净化过滤器限制了深度PM过滤,因为事实上将它用具有恒定或更大厚度并包含合适的多孔结构的催化层涂布(壁上涂布),并且来自重复PM沉积和再生的“压力耗损滞后”可得到改进。
就废气净化过滤器而言,因此可限制伴随PM沉积的压力耗损增加,并且还可在增加的压力耗损充当沉积的PM再生处理的引发物时检测更合适的再生时机。
如图1中所示,根据该实施方案的模式的废气净化过滤器包括基材1,和提供在基材1内的催化物质(未描绘出),所述基材1包含多个泡孔4,泡孔4形成气体(废气)流动路径并且具有气体流入侧末端2和流出侧末端3,以及界定泡孔4的多个多孔隔板5。在隔板5上提供多孔催化层(未描绘出)。
基材1负载催化物质并且用来形成废气流动路径;基材1优选耐久以使得在连接的内燃机中尽可能不存在由压力耗损造成的燃烧效率降低。对于形成基材1的多孔材料没有具体限制,只要至少在隔板5中提供孔即可,但优选使用多孔陶瓷材料。
用于基材1的优选材料包括:堇青石陶瓷,其包含三种组分,即氧化铝(Al2O3,铝土)、二氧化硅(SiO2,硅石)和氧化镁(MgO);碳化硅和钛酸铝。通过使用这些材料连同有机成孔材料,可将基材1中的隔板5等的孔隙度设定在优选范围内。
包含上述材料的蜂窝形状优选用作基材1。蜂窝形过滤器包括形成气体流动路径的多个泡孔,但对于泡孔的截面形状没有具体限制,并且栅状网孔是可行的,如图1中所示,或者六角形同样地可行,但关于其形状不存在限制。或者,可使用被称为不对称泡孔结构的形状,其在入口和出口处具有不同尺寸的泡孔。
在根据该实施方案的模式的废气净化过滤器中关于基材1的结构不存在限制,但基材1至少包含气体流入侧末端2和流出侧末端3。此外,基材1至少包含形成气体流动路径的多个泡孔4,和界定所述泡孔4的多个多孔隔板5。
在根据该实施方案的模式的废气净化过滤器中,多个泡孔4在泡孔4中的至少一些的末端处在其入口/出口处交替密封。通过采用这类构造,废气能有效经过流动路径,并且废气中的颗粒物质可被有效处理。
根据该实施方案的模式的废气净化过滤器更优选采用具有诸如上文所述的构造的基材,但负载催化物质的基材不限于上述构造。
在根据该实施方案的模式的废气净化过滤器的隔板上提供多孔催化层,在隔板的总长的至少20%上在其纵向方向上提供具有10μm或更大厚度的所述催化层,同时从流出侧起15mm的气体流入侧隔板上不存在具有10μm或更大厚度的催化层。
从减少压力耗损滞后的角度来看,具有10μm或更大厚度的催化层更优选在其纵向方向上占隔板的总长的至少50%(不包括从出口起15mm处)。此外,从改进催化剂氧化活性的角度来看,优选从入口部分起还存在少于50%的量的高浓度贵金属组分。
更优选地,在流出侧的15mm内入口泡孔的气体流入侧隔板上不存在具有10μm或更大厚度的催化层。此外,在从流出侧起15mm的隔板上催化层的厚度更优选介于10与40μm之间或以壁内状态分布。
例如,当从流出侧起10mm的范围被用于密封塞子时,优选在从塞子末端起小于5mm的范围内不提供催化层。
考虑到DPF功能,涂布具有恒定厚度的催化层的总长的100%是固有有利的,但如果存在部分未涂布部分,这一优点仍能在某种程度上得到维持。此外,如果使用湿浆料形成的壁上层被缩减,可缩短使填充隔板中孔的水分干燥所花费的时间,这使得可改进生产能力。还可在空气循环方面减少压力耗损。
例如,如果用湿浆料涂布隔板的总长(100%),水分填充隔板的内部,如此直至水膜已破裂为止通风干燥都是不可能的,因此干燥时间增加并且这是生产能力方面的一个问题。然而,利用根据该实施方案的模式的废气净化过滤器,不在100%的总长上施加具有10μm或更大厚度的催化层,因此在涂布之后可直接通风干燥并且可解决所述问题。
根据该实施方案的模式的废气净化过滤器具有上文所描述的构造,并且因此可克服生产缺点,同时赋予壁上催化层的效果。
此外,可增强废气的气体分散性,因为事实上催化层具有借助有机成孔材料形成的孔,并且因此废气催化剂可对诸如CO和HC的气体组分进行有效的氧化处理。
在根据该实施方案的模式的废气净化过滤器中提到的“借助有机成孔材料形成的孔”指的是催化层和隔板的内部、表面上和界面等处存在空隙。对于“孔”的形状没有具体限制,并且孔洞形、球形、椭圆形、棱柱形、贯通通路或任何类似形状是可行的,但优选L/D<1.5。
具有10μm或更大厚度的根据该实施方案的模式的废气净化过滤器的部分中催化层的厚度介于10μm与50μm之间。具有10μm或更大厚度的部分中催化层的厚度更优选介于10与20μm之间。
换言之,因为压力耗损减少和形成壁上PM捕集层,优选具有介于10与20μm之间的厚度的催化层,并且从减少压力耗损滞后的角度来看,优选在其纵向方向上涂布隔板的总长的50%或更多(不包括从流出侧末端起15mm的范围)。此外,从改进催化剂氧化活性的角度来看,优选涂布从流入侧末端起少于50%处。
明确来说,催化层优选包括贵金属组分,诸如铂或钯;金属氧化物,诸如氧化铝、二氧化硅或二氧化钛或它们的复合氧化物,或者其中已加入稀土元素的组分,诸如氧化铈;以及Ba、Mn、Cu或OSC材料和/或碱金属,诸如K或Cs,其充当辅助催化剂。
更优选地,催化层包含贵金属,具有氧化铝作为主要组分的复合氧化物(充当贵金属的载体材料),以及OSC(氧存储)材料(充当PM燃烧催化剂)。
使用的催化剂组分具有催化废气中的颗粒物质和氧气燃烧、以及催化废气中的一氧化氮至二氧化氮、催化一氧化碳至二氧化碳、以及催化烃至二氧化碳和水的特征。可引用的这类催化剂组分的具体实例是选自碱金属、碱土金属、过渡元素和来自扩展的元素周期表的第10至12族的元素以及它们的混合物的那些。
可引用的碱金属选自钠(Na)、钾(K)、铯(Cs)和它们的混合物,其中优选钾和铯和它们的混合物。可引用的碱土金属选自镁、钙、钡和它们的混合物,其中优选镁、钡和它们的混合物。
可引用的过渡元素选自锆、镧、铈、铂、铑、钌、钯、铁、银和它们的混合物,其中优选铈、铂、铁和它们的混合物。可引用锌作为来自扩展的元素周期表的第12族的元素。可引用的来自扩展的元素周期表的第13族的元素选自铝、镓、铟和它们的混合物,其中优选铝。
催化剂组分优选还带有使废气中的气体组分氧化的功能。可引用的这类催化剂组分属于在上文所提及那些之中的贵金属和贱金属。
根据该实施方案的模式的废气净化过滤器中的催化剂组分更优选包括铂和钯的至少一种,以及碱金属和稀土元素的至少一种。
对于催化物质而言,铂和钯的重量比更优选为至少1:1。通过这种方式,可实现能够限制在氧化气氛下贵金属、特别是铂的热烧结(团聚)的效果。此外,从耐硫性的角度来看,优选以介于2:1与5:1之间的比率包括铂和钯。
根据该实施方案的模式的废气净化过滤器更优选进一步包括选自OSC材料、碱金属和钙钛矿材料的至少一种材料作为催化剂助剂。进一步包括包含这类过渡金属族的PM燃烧催化剂使得可实现促进碳基物质燃烧的效果。
可引用的氧存储材料的实例包括包含Ce、Pr、Zr和Nd的材料。在这些之中,由于促进燃烧而特别优选使用Ce。可引用的碱金属的实例包括K、Cs和Mg。在这些之中,由于促进燃烧而特别优选使用K和Cs。可引用的钙钛矿材料的实例包括Bi4Ti3O4(JP 2010-69471 A)和Ce0.5Bi0.1Pr0.4(JP 2009-112907 A)。
形成根据该实施方案的模式的废气净化过滤器的催化层的部分的催化剂组分的施加量更优选设定在40g/L或更少,催化剂组分选取为γ-氧化铝。所施加催化剂的量涉及壁上催化层的实际形成,并且还影响压力耗损特性。40g/L可换算至大约0.7g/in3。
此外,在用来赋予催化功能的材料以10g/L或更少施加时,壁上层不能充分地形成。由于能够限制压力耗损的大幅增加,所施加催化剂组分的量更优选为30g/L或更少,但最小量还受所用材料的比重和孔体积影响。例如,当使用具有0.7ml/g孔体积的γ-氧化铝时,优选40g/L或更少的施加量,并且当施加具有0.21ml/g孔体积的氧化铈时,优选大约200g/L的施加量。这些表明最优施加量根据形成浆料的材料而变化。
可将另一种催化剂助剂加入根据该实施方案的模式的废气净化过滤器。催化剂助剂的具体实例选自氧化铝、氧化铈、氧化钛、氧化锆、氧化硅、氧化镁和它们的混合物,其中优选氧化镁、氧化铈、氧化钛、氧化锆和氧化硅。催化剂助剂以相对于形成催化层的组分的总重量计50-99%的量添加。
在根据该实施方案的模式的废气净化过滤器中催化层中孔的平均直径更优选介于1与5μm之间。由于压力耗损与限制PM颗粒深度过滤之间的平衡,催化层中孔的平均直径更优选介于2与5μm之间。
在根据该实施方案的模式的废气净化过滤器中催化层的空隙比更优选不大于50%。由于压力耗损和维持壁上层的机械强度,催化层的空隙比更优选介于50与30%之间。
更优选将包括催化剂组分和有机成孔材料的浆料混合并施加,以便形成催化层作为壁上结构并形成根据该实施方案的模式的废气净化过滤器的催化层中的孔。
存在用于催化剂壁上涂布的数种方法。一种这样的方法采用比隔板中的孔更大的固体颗粒。可借助具有大颗粒的成孔材料来限制催化剂颗粒穿透进入隔板中的孔,所述成孔材料还充当催化剂固体内容物。此外,这种成孔材料还有助于减少壁上催化层中的压力耗损。
成孔材料的颗粒尺寸优选介于1与5μm之间,且更优选介于2与5μm之间,以便防止在所形成的实际空隙中深度过滤。
可引用的用于提供催化层中空隙的方式的具体实例包括一种方式,通过该方式在介质(例如,水)中加入废气催化剂组分和成孔材料,并且搅拌以制备浆料,然后将浆料负载于载体上并烘烤以便使形成剂燃烧并分解。因此,可在烘烤过程中优选通过燃烧来去除形成剂。
可使用任何类型的形成剂,条件是它使空隙形成,并且可使用具有相同或不同的形状、类型或尺寸等的材料。优选的形成材料是球形或圆柱形等并且可热分解或燃烧。更优选使用有机成孔材料作为形成剂。
可有利地使用有机成孔材料,条件是它是具有与浆料水溶液相同水平的比重的可燃材料。这是因为如果其比重过低或过高,有机成孔材料不易在水溶液中与其他材料形成均匀分散的状态。
可引用的这类形成剂的具体实例包括:发泡剂,表面活性剂,可发泡合成树脂,活性碳,石墨粉和纸浆粉。可引用的发泡剂的具体实例包括La2(CO3)3、Al2(CO)3和Ce2(CO)3,并且优选包括与废气催化剂组分中相同的元素。可引用的表面活性剂的具体实例包括阴离子表面活性剂,诸如磺酸表面活性剂和碳酸表面活性剂;阳离子表面活性剂,诸如胺表面活性剂;和两性表面活性剂,诸如脂肪酸酯表面活性剂。可引用的可发泡合成树脂和类似物包括基于聚氨酯、基于聚苯乙烯(例如,聚苯乙烯)、基于聚乙烯、基于聚酯和基于聚丙烯酸系(例如,聚甲基丙烯酸甲酯)的合成树脂。
当使用有机成孔材料时,有机成孔材料的平均长度/直径比优选为1.5或更小。球形颗粒的球体通常进行点接触,并且虽然认为这产生差的空隙连通,但到目前为止的结果表明优点可得到维持。认为由于成孔材料的取向上的差异,将L/D设定为接近球形有利于预测穿透进入隔板中孔的量,使得使用量能够更可靠地设定。
有机成孔材料的更优选实例是聚合物,诸如聚乳酸聚合物。
在根据该实施方案的模式的废气净化过滤器中,隔板中孔的空隙比优选介于40%与60%之间。从减少压力耗损与PM捕集性能之间相容性的角度来看,隔板中孔的空隙比更优选介于40与55%之间。
在根据该实施方案的模式的废气净化过滤器中,隔板中孔的平均直径优选介于10μm与20μm之间。从DPF压力耗损的角度来看,隔板中孔的平均直径优选为10μm或更大,并且优选20μm或更小,因为这提供从一开始高的PM捕集效率。孔的平均直径更优选介于10与15μm之间。
上述实施方案的模式中催化物质的空隙比和孔的形式可使用SEM(扫描电子显微镜)/EPMA(电子探针微量分析仪)获得。例如,可借助SEM/EPMA,通过在放大150与500倍之间的视场中图像处理获得在施加催化物质之前基材的孔面积(A)。此外,还可通过相同的方法获得在施加催化剂之后的孔面积(B)。此外,使用相同的二维方法,借助图像处理获得基材部分的面积,这使得可计算基材1中孔洞的孔面积的相对比率和占有面积比。
此外,汞侵入法通常用作测量三维孔结构体积的方法,并且该方法与上述图像处理法之间的相关性结果如图2中所示;从SEM图像获得的二维空隙比(占有面积的比率)与从使用汞孔率计的测量结果获得的空隙占有体积比之间存在相关性,这构成了三维数据。
在此在SEM/EPMA法中优选使用150至200倍放大的组成图像,并且可通过使用例如RGB法将基材和催化剂所占有的面积分成单独颜色来获得占有面积。
当在根据该实施方案的模式的废气净化过滤器中通过图像处理获得占有面积时,优选对图像二值化并且优选使用自动模式或类似物进行计算以防止人为误差。
使用根据上述实施方案的模式的废气净化过滤器来净化废气,并且优选将采用根据上述实施方案的模式的废气净化过滤器的装置用于内燃机、特别是火花点火发动机(例如,汽油发动机)或压缩点火发动机(例如,柴油发动机)的废气系统中。
此外,这些发动机可为通过调整空气燃料比来燃烧燃料的发动机,并且可引用的其优选具体实例包括贫燃发动机、直接喷射发动机,并且优选组合了这些的发动机(即,直接喷射贫燃发动机)。直接点火发动机采用允许更高压缩比、燃烧效率改进以及废气减少的燃料供应系统。因此,通过将其与贫燃发动机进行组合,可进一步改进燃烧效率并减少废气。
根据该实施方案的模式的废气净化过滤器优选用于装配于运输交通工具或机械等中的内燃机的废气系统中。可引用的运输交通工具和机械的具体实例包括:运输车辆,诸如机动车、公交车、卡车、倾卸车、柴油有轨车、摩托车、机动自行车,轮船、油轮、汽艇,和飞机;农业机械,诸如耕耘机、拖拉机、联合收割机、链锯和木材搬运器;水产和捕鱼机械,诸如渔船;木材作业机械,诸如罐车,吊车,压缩机和挖掘机;以及发电机。
根据该实施方案的模式的废气净化过滤器可被安装用于例如车辆废气系统中的歧管转换器,底置式催化剂,或启动催化剂。
示例性实施方案
将在下文描述根据本发明的示例性实施方案。本发明的内容不应解释为受限于这些示例性实施方案。
(生产在隔板上具有用于捕集PM的催化层的废气净化过滤器的实施例)
使用的DPF是由IBIDEN生产的SD082:直径143.8mm×长度150.2mm,平均孔尺寸12μm,孔隙度42%。
制备其中将有机成孔材料与含有氧化铝作为主要组分以及铂和钯的浆料捏合的载体涂料(下文称作“WC”),并且借助过滤器涂布设备以使得催化剂的量为20g/L的方式将该载体涂料涂布在DPF上。在100℃下干燥之后,在500℃下烘烤经涂布的过滤器1小时。在此,使用的有机成孔材料是球形材料,具有1:1长径比并且包含聚乳酸聚合物Landy PL-1000(由Miyoshi Oil&Fat有限公司生产)。
(示例性实施方案1以及比较实施例1和2)
如表1中所示,利用隔板上不同长度的催化层生产废气净化过滤器。含有有机成孔材料的WC以使得其长度为15mm、76mm和150mm的方式施加,并且这些长度分别对应于示例性实施方案1以及比较实施例1和2。使用不含有有机成孔材料的WC涂布未用含有有机成孔材料的WC涂布的位置。每个废气净化过滤器的铂、钯和WC的量相同。
明显的是其中在隔板的总长的至少20%上在其纵向方向上施加具有10μm或更大厚度的催化层、并且在从流出侧起15mm的位置处不存在具有10μm或更大厚度的催化层的废气净化过滤器在浆料干燥过程中以更短时间干燥,这是大规模生产中的一个考虑因素,并且还具有在CO 50%转化效率温度以及PM沉积压力耗损和PM沉积压力耗损滞后方面的优良性能。在240kg/hr的气体流动速率和250℃的气体温度的烟灰生成条件下测量PM沉积压力耗损。
[表1]
(示例性实施方案3-5)
根据示例性实施方案1,利用35g/L、55g/L和5g/L的催化剂组分施加量生产废气净化过滤器,并且这些对应于示例性实施方案3、4和5。
当施加催化剂组分的量超过40g/L时,如在示例性实施方案4中,催化层和隔板的厚度增加并且存在PM沉积压力耗损的恶化。此外,当施加催化剂组分的量为10g/L或更少时,如在示例性实施方案5中,隔板上催化层的厚度减小并且作为壁上层的效果不能被展现。
[表2]
(示例性实施方案6和7)
根据示例性实施方案2,将不为球形的不规则颗粒(玉米淀粉)用作示例性实施方案6中的有机成孔材料的类型(形状),并且在示例性实施方案7中使用三聚氰胺聚合物(MC6000(由Nissan Chemical Industries有限公司生产),球形,L/D=1)。在示例性实施方案6或7中的隔板上不能获得令人满意的催化层。
[表3]
(示例性实施方案8和9)
根据示例性实施方案2,生产其中所添加有机成孔材料的量改变至4g/L和15g/L的废气净化过滤器,并且这些对应于示例性实施方案8和9。在表4中,所添加有机成孔材料的量(g/L)被换算至WC中有机成孔材料的体积分数(%)。在示例性实施方案8或9中的隔板上不能获得令人满意的催化层,并且未达到其中可限定空隙比的状态。
[表4]
Claims (10)
1.废气净化过滤器,其包括包含多个多孔隔板的基材,
其中所述隔板形成废气流动路径,
在所述隔板上提供多孔催化层,并且在所述隔板的总长的至少20%上在其纵向方向上提供具有10μm或更大的厚度的所述催化层,并且
从流出侧起15mm的所述隔板上不存在具有10μm或更大的厚度的所述催化层。
2.根据权利要求1所述的废气净化过滤器,其中形成所述催化层的部分的催化剂组分的施加量根据所述催化层中的孔体积和所述催化剂组分的比重变化。
3.根据权利要求1或2所述的废气净化过滤器,其中所述催化层中孔的平均直径介于1与5μm之间。
4.根据权利要求1至3中任一项所述的废气净化过滤器,其中所述催化层的空隙比不大于50%。
5.根据权利要求1至4中任一项所述的废气净化过滤器,其中所述隔板的空隙比介于40%与60%之间。
6.根据权利要求1至5中任一项所述的废气净化过滤器,其中所述隔板中孔的平均直径介于10μm与20μm之间。
7.根据权利要求1至6中任一项所述的废气净化过滤器,其中所述催化剂组分可包括铂和钯的至少一种,以及碱金属和稀土金属的至少一种。
8.根据权利要求1至7中任一项所述的废气净化过滤器,其中所述催化层的厚度介于10μm与50μm之间。
9.用于生产根据权利要求1至8中任一项所述的废气净化过滤器的方法,所述方法包括施加包括催化剂组分和有机成孔材料的浆料以便形成催化层中的孔的步骤。
10.根据权利要求9所述的用于生产废气净化过滤器的方法,其中所述有机成孔材料的平均长度/直径比是1.5或更小。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016073878 | 2016-04-01 | ||
JP2016-073878 | 2016-04-01 | ||
PCT/JP2017/012865 WO2017170669A1 (en) | 2016-04-01 | 2017-03-29 | Exhaust gas purification filter |
Publications (1)
Publication Number | Publication Date |
---|---|
CN109475815A true CN109475815A (zh) | 2019-03-15 |
Family
ID=58640953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201780029763.0A Pending CN109475815A (zh) | 2016-04-01 | 2017-03-29 | 废气净化过滤器 |
Country Status (10)
Country | Link |
---|---|
US (2) | US10233803B2 (zh) |
EP (1) | EP3436182A1 (zh) |
JP (1) | JP2019516541A (zh) |
KR (1) | KR20180132743A (zh) |
CN (1) | CN109475815A (zh) |
BR (1) | BR112018069967A2 (zh) |
DE (1) | DE102017106374A1 (zh) |
GB (1) | GB2551608A (zh) |
RU (1) | RU2018138395A (zh) |
WO (1) | WO2017170669A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114534486A (zh) * | 2020-11-26 | 2022-05-27 | 长城汽车股份有限公司 | 一种净化氮氧化物的方法 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7037985B2 (ja) * | 2018-03-30 | 2022-03-17 | 日本碍子株式会社 | ハニカムフィルタ |
KR102256046B1 (ko) * | 2019-08-09 | 2021-05-25 | 주식회사 아이비머티리얼즈 | 기공률이 향상된 VOCs 로터 시스템용 실리콘 카바이드 허니컴 구조체의 제작방법 |
WO2021181487A1 (ja) * | 2020-03-09 | 2021-09-16 | 三井金属鉱業株式会社 | 排ガス浄化用触媒 |
JP7385510B2 (ja) | 2020-03-19 | 2023-11-22 | 日本碍子株式会社 | ハニカムフィルタ |
JP7332530B2 (ja) | 2020-04-21 | 2023-08-23 | トヨタ自動車株式会社 | 排ガス浄化装置 |
WO2024018991A1 (ja) * | 2022-07-20 | 2024-01-25 | 綜研化学株式会社 | 乳酸-ビニル共重合体、バインダー組成物および焼成用ペースト |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090246453A1 (en) * | 2008-03-28 | 2009-10-01 | Ngk Insulators, Ltd. | Honeycomb structure |
US20110201493A1 (en) * | 2010-02-16 | 2011-08-18 | Ngk Insulators, Ltd. | Honeycomb catalyst body |
WO2012070386A1 (ja) * | 2010-11-24 | 2012-05-31 | 住友化学株式会社 | ハニカムフィルタ |
CN103781532A (zh) * | 2011-07-28 | 2014-05-07 | 庄信万丰股份有限公司 | 用于处理废气的区域化催化过滤器 |
CN204147880U (zh) * | 2014-08-13 | 2015-02-11 | 江阴华音陶瓷机电科技有限公司 | 椭圆形陶瓷蜂窝载体 |
US20150259254A1 (en) * | 2014-03-12 | 2015-09-17 | Ngk Insulators, Ltd. | Honeycomb structure |
CN105143620A (zh) * | 2013-05-22 | 2015-12-09 | 三井金属矿业株式会社 | 柴油颗粒过滤器和废气净化装置 |
CN105153620A (zh) * | 2015-07-31 | 2015-12-16 | 江苏省电力公司泰州供电公司 | 一种改性聚丙烯/超支化聚酰亚胺绝缘合金材料及其制备方法 |
Family Cites Families (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0369163A1 (en) * | 1988-10-11 | 1990-05-23 | Sakai Chemical Industry Co., Ltd., | Particulate removing catalyst filter and particulate removing method using the same |
JP4450984B2 (ja) | 2000-12-25 | 2010-04-14 | 株式会社豊田中央研究所 | 排ガス浄化用触媒 |
JP2002253698A (ja) | 2001-02-27 | 2002-09-10 | Takashi Saito | 簡単折りたたみ式逆立ち台 |
JP2002253968A (ja) | 2001-03-02 | 2002-09-10 | Toyota Central Res & Dev Lab Inc | 排ガス浄化用触媒 |
DE10247946A1 (de) | 2002-10-15 | 2004-04-29 | Robert Bosch Gmbh | Abgasnachbehandlungsanordnung |
JP4567285B2 (ja) * | 2002-11-22 | 2010-10-20 | 日本碍子株式会社 | 排ガス浄化用触媒体 |
JP2005021818A (ja) * | 2003-07-03 | 2005-01-27 | Johnson Matthey Japan Inc | 排気ガス中の微粒子状物質を処理するための排気ガス触媒 |
US7722829B2 (en) | 2004-09-14 | 2010-05-25 | Basf Catalysts Llc | Pressure-balanced, catalyzed soot filter |
JPWO2006035823A1 (ja) * | 2004-09-30 | 2008-05-15 | イビデン株式会社 | ハニカム構造体 |
JP4907860B2 (ja) * | 2004-11-11 | 2012-04-04 | 株式会社キャタラー | フィルタ触媒 |
JP5142532B2 (ja) * | 2004-11-26 | 2013-02-13 | イビデン株式会社 | ハニカム構造体 |
US8609581B2 (en) * | 2005-08-31 | 2013-12-17 | Ngk Insulators, Ltd. | Honeycomb structure and honeycomb catalytic body |
EP1920839A4 (en) * | 2005-08-31 | 2012-01-25 | Ngk Insulators Ltd | A HONEYCOMB CATALYST STRUCTURE, PREVENTIONAL SUPPORT FOR PRODUCING A HONEYCOMB CATALYST STRUCTURE, AND METHOD FOR PRODUCING THE HONEYCOMB CATALYST STRUCTURE |
US7754160B2 (en) * | 2005-08-31 | 2010-07-13 | Ngk Insulators | Honeycomb catalytic body and process for manufacturing honeycomb catalytic body |
EP1946840B1 (en) * | 2005-11-04 | 2019-08-21 | NGK Insulators, Ltd. | Honeycomb structure and honeycomb catalyst |
JP5073303B2 (ja) * | 2006-03-24 | 2012-11-14 | 日本碍子株式会社 | 触媒コンバータ及び触媒コンバータの製造方法 |
WO2008126328A1 (ja) * | 2007-03-30 | 2008-10-23 | Ibiden Co., Ltd. | ハニカムフィルタ |
WO2008136078A1 (ja) | 2007-04-20 | 2008-11-13 | Ibiden Co., Ltd. | ハニカムフィルタ |
JP5318396B2 (ja) | 2007-11-02 | 2013-10-16 | Dowaエレクトロニクス株式会社 | 排気ガス浄化材および排気ガス浄化用フィルター |
JP5096978B2 (ja) | 2008-03-27 | 2012-12-12 | 日本碍子株式会社 | ハニカム触媒体 |
JP2010069471A (ja) | 2008-08-22 | 2010-04-02 | Dowa Electronics Materials Co Ltd | Pm燃焼用複合酸化物触媒、それを用いたスラリー及び排ガス浄化用フィルター |
JP2010167366A (ja) * | 2009-01-22 | 2010-08-05 | Ngk Insulators Ltd | ハニカム触媒体 |
JP5409070B2 (ja) | 2009-03-24 | 2014-02-05 | 日本碍子株式会社 | 排ガス浄化装置の製造方法及び排ガス浄化装置 |
JP5064432B2 (ja) | 2009-03-24 | 2012-10-31 | 日本碍子株式会社 | ハニカム触媒体 |
JP5349108B2 (ja) | 2009-03-26 | 2013-11-20 | 日本碍子株式会社 | ハニカムフィルタ |
JP2010227767A (ja) * | 2009-03-26 | 2010-10-14 | Ngk Insulators Ltd | ハニカムフィルタ |
JP5456353B2 (ja) * | 2009-03-31 | 2014-03-26 | 日本碍子株式会社 | ハニカムフィルタ |
JP5649945B2 (ja) | 2009-12-25 | 2015-01-07 | 日本碍子株式会社 | 表面捕集層付き担体及び触媒担持表面捕集層付き担体 |
JP5390438B2 (ja) * | 2010-03-11 | 2014-01-15 | 日本碍子株式会社 | ハニカム触媒体 |
JP2012117487A (ja) * | 2010-12-03 | 2012-06-21 | Toyota Central R&D Labs Inc | 触媒付パティキュレートフィルタ、排ガス浄化排出システム、触媒配置部割合算出方法、及び触媒配置部割合算出装置 |
JP6532826B2 (ja) | 2013-12-11 | 2019-06-19 | 株式会社キャタラー | 排ガス浄化材 |
EP3207990B1 (en) | 2014-10-16 | 2021-04-28 | Cataler Corporation | Exhaust gas purification catalyst |
US10125649B2 (en) | 2014-10-16 | 2018-11-13 | Cataler Corporation | Exhaust gas purification catalyst |
CN107249738B (zh) | 2015-02-17 | 2020-10-20 | 株式会社科特拉 | 排气净化用催化剂 |
GB2542654B (en) * | 2015-06-28 | 2019-12-04 | Johnson Matthey Plc | Catalytic wall-flow filter having a membrane |
-
2017
- 2017-03-24 DE DE102017106374.9A patent/DE102017106374A1/de not_active Ceased
- 2017-03-29 KR KR1020187031088A patent/KR20180132743A/ko unknown
- 2017-03-29 BR BR112018069967A patent/BR112018069967A2/pt not_active Application Discontinuation
- 2017-03-29 CN CN201780029763.0A patent/CN109475815A/zh active Pending
- 2017-03-29 JP JP2018551490A patent/JP2019516541A/ja active Pending
- 2017-03-29 WO PCT/JP2017/012865 patent/WO2017170669A1/en active Application Filing
- 2017-03-29 EP EP17720242.1A patent/EP3436182A1/en not_active Withdrawn
- 2017-03-29 US US15/473,007 patent/US10233803B2/en active Active
- 2017-03-29 RU RU2018138395A patent/RU2018138395A/ru not_active Application Discontinuation
- 2017-03-31 GB GB1705213.5A patent/GB2551608A/en not_active Withdrawn
-
2019
- 2019-03-14 US US16/353,081 patent/US20190211723A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090246453A1 (en) * | 2008-03-28 | 2009-10-01 | Ngk Insulators, Ltd. | Honeycomb structure |
US20110201493A1 (en) * | 2010-02-16 | 2011-08-18 | Ngk Insulators, Ltd. | Honeycomb catalyst body |
WO2012070386A1 (ja) * | 2010-11-24 | 2012-05-31 | 住友化学株式会社 | ハニカムフィルタ |
CN103781532A (zh) * | 2011-07-28 | 2014-05-07 | 庄信万丰股份有限公司 | 用于处理废气的区域化催化过滤器 |
CN105143620A (zh) * | 2013-05-22 | 2015-12-09 | 三井金属矿业株式会社 | 柴油颗粒过滤器和废气净化装置 |
US20150259254A1 (en) * | 2014-03-12 | 2015-09-17 | Ngk Insulators, Ltd. | Honeycomb structure |
CN204147880U (zh) * | 2014-08-13 | 2015-02-11 | 江阴华音陶瓷机电科技有限公司 | 椭圆形陶瓷蜂窝载体 |
CN105153620A (zh) * | 2015-07-31 | 2015-12-16 | 江苏省电力公司泰州供电公司 | 一种改性聚丙烯/超支化聚酰亚胺绝缘合金材料及其制备方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114534486A (zh) * | 2020-11-26 | 2022-05-27 | 长城汽车股份有限公司 | 一种净化氮氧化物的方法 |
Also Published As
Publication number | Publication date |
---|---|
BR112018069967A2 (pt) | 2019-01-29 |
RU2018138395A (ru) | 2020-05-14 |
DE102017106374A1 (de) | 2017-10-05 |
EP3436182A1 (en) | 2019-02-06 |
GB2551608A (en) | 2017-12-27 |
GB201705213D0 (en) | 2017-05-17 |
US20190211723A1 (en) | 2019-07-11 |
RU2018138395A3 (zh) | 2020-05-14 |
US20170284247A1 (en) | 2017-10-05 |
US10233803B2 (en) | 2019-03-19 |
JP2019516541A (ja) | 2019-06-20 |
KR20180132743A (ko) | 2018-12-12 |
WO2017170669A1 (en) | 2017-10-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109475815A (zh) | 废气净化过滤器 | |
JP7383099B2 (ja) | ガソリンパティキュレートフィルター | |
CN104661749B (zh) | 尾气净化用催化剂及其制备方法 | |
CN104254387B (zh) | 包含三元催化剂的过滤器基底 | |
ES2754924T3 (es) | Sistemas de tratamiento de emisiones de motores de gasolina que tienen colectores de partículas | |
US10369545B2 (en) | Honeycomb structure | |
US20090129995A1 (en) | Method for coating a surface filter with a finely divided solids, filter so obtained and its use | |
CN112074657B (zh) | 经涂覆的壁流式过滤器 | |
CN105793529A (zh) | 包含催化载体涂层的壁流式过滤器 | |
KR20180059895A (ko) | 가솔린 미립자 필터 | |
JP7065071B2 (ja) | 排気ガス浄化用フィルタ及びその製造方法 | |
CN102574056A (zh) | 汽油发动机废气处理体系 | |
KR20150119140A (ko) | 삼원 촉매 필터를 포함하는 포지티브 점화 엔진 및 배기 시스템 | |
JP2006110485A (ja) | 排気ガス触媒およびそれを用いた排気ガス処理装置 | |
CN101415491A (zh) | 尾气净化催化剂和使用其的尾气处理装置 | |
JP2009106926A (ja) | 触媒コンバータ及びその製造方法 | |
CN102223951A (zh) | 粒状物净化材料、使用粒状物净化材料的粒状物净化用过滤器催化剂以及粒状物净化用过滤器催化剂的再生方法 | |
CN109715270A (zh) | 用于汽油机排放处理系统的单金属含铑四元转化催化剂 | |
WO2020031975A1 (ja) | 触媒塗工ガソリンパティキュレートフィルター及びその製造方法 | |
JP2004330025A (ja) | 排気ガス触媒およびそれを用いた排気ガス処理装置 | |
CN113710351A (zh) | 催化汽油微粒过滤器 | |
US20220280930A1 (en) | Catalyser substrates with porous coating | |
EP3400999B1 (en) | Filter | |
GB2547325A (en) | Filter | |
JPS627448A (ja) | 排ガス浄化用触媒およびその製法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WD01 | Invention patent application deemed withdrawn after publication | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190315 |