JP2009545437A - 排ガス処理のための組成物および方法 - Google Patents
排ガス処理のための組成物および方法 Download PDFInfo
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- JP2009545437A JP2009545437A JP2009522857A JP2009522857A JP2009545437A JP 2009545437 A JP2009545437 A JP 2009545437A JP 2009522857 A JP2009522857 A JP 2009522857A JP 2009522857 A JP2009522857 A JP 2009522857A JP 2009545437 A JP2009545437 A JP 2009545437A
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- catalyst layer
- exhaust gas
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- nitrogen oxides
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- 238000000034 method Methods 0.000 title claims abstract description 92
- 239000000203 mixture Substances 0.000 title claims abstract description 60
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims abstract description 519
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 428
- 239000003054 catalyst Substances 0.000 claims abstract description 300
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 214
- 239000007789 gas Substances 0.000 claims abstract description 153
- 150000001875 compounds Chemical class 0.000 claims abstract description 66
- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 33
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 32
- 230000003647 oxidation Effects 0.000 claims abstract description 19
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims description 57
- 239000002184 metal Substances 0.000 claims description 57
- 230000009467 reduction Effects 0.000 claims description 54
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 37
- 229910052707 ruthenium Inorganic materials 0.000 claims description 37
- 238000000354 decomposition reaction Methods 0.000 claims description 35
- 125000000524 functional group Chemical group 0.000 claims description 34
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 claims description 28
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- 238000010531 catalytic reduction reaction Methods 0.000 abstract description 19
- 229910002089 NOx Inorganic materials 0.000 description 68
- 238000006722 reduction reaction Methods 0.000 description 42
- 238000002485 combustion reaction Methods 0.000 description 13
- 238000007792 addition Methods 0.000 description 12
- 230000003197 catalytic effect Effects 0.000 description 12
- 150000002739 metals Chemical class 0.000 description 12
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 238000002156 mixing Methods 0.000 description 10
- -1 platinum group metals Chemical class 0.000 description 10
- 238000001125 extrusion Methods 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 238000005192 partition Methods 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 7
- 238000003421 catalytic decomposition reaction Methods 0.000 description 7
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 238000013459 approach Methods 0.000 description 5
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 4
- 229910000510 noble metal Inorganic materials 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 229910052738 indium Inorganic materials 0.000 description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 3
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 235000012438 extruded product Nutrition 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- VPKDCDLSJZCGKE-UHFFFAOYSA-N methanediimine Chemical compound N=C=N VPKDCDLSJZCGKE-UHFFFAOYSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000009828 non-uniform distribution Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000002243 precursor Substances 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
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 1
- 239000005695 Ammonium acetate Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- ODUCDPQEXGNKDN-UHFFFAOYSA-N Nitrogen oxide(NO) Natural products O=N ODUCDPQEXGNKDN-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 235000019257 ammonium acetate Nutrition 0.000 description 1
- 229940043376 ammonium acetate Drugs 0.000 description 1
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 1
- VZTDIZULWFCMLS-UHFFFAOYSA-N ammonium formate Chemical compound [NH4+].[O-]C=O VZTDIZULWFCMLS-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 230000000630 rising effect Effects 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
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 description 1
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- 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
- F01N3/18—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 methods of operation; Control
- F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
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- B01J23/56—Platinum group metals
- B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/652—Chromium, molybdenum or tungsten
- B01J23/6527—Tungsten
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- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
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- 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
- B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
- B01D53/9477—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on separate bricks, e.g. exhaust systems
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- B01J23/8993—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals also combined with metals, or metal oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with chromium, molybdenum or tungsten
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
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Abstract
Description
本願はここに、2006年8月1日出願の米国仮特許出願第60/834,614号に対する米国特許法第119条(e)の優先権を主張する。
本発明は排ガス処理のための組成物および方法に関し、詳しくは、排ガスからの窒素酸化物の除去に関する。
4NO+4NH3+O2→4N2+6H2O (1)
2NO+2NO2+4NH3→4N2+6H2O (2)
本発明は、アンモニアスリップおよび二酸化硫黄酸化を最小限にしつつ排ガスからの窒素酸化物除去の高効率を達成する組成物、システム、および方法を与える。
本発明に係るモノリシック構造触媒体
本発明に係るハニカム状モノリシック構造触媒体が、成分の混合、ハニカム形状への押出、乾燥、および焼成を含む上述の方法により、実験室規模の製造設備において作られた。触媒体は、チタニア(TiO2)85%、三酸化タングステン(WO3)を含む触媒活性金属組成物9%、ルテニウム0.3%、ならびに、SiO2、CaO、Al2O3、Fe2O3、SO4、およびマイナー種を含む他の要素を含む無機酸化物含有量の触媒組成物を示した。内区画壁および外周壁により包囲される流路は名目上、セルサイズ6.3mmの断面プロファイルの正方形であった。モノリシック触媒体のピッチは7.1mmであった。
Claims (39)
- 排ガスから窒素酸化物を除去する方法であって、
第1触媒層を与えることと、
前記第1触媒層の上流で前記排ガスに、前記排ガス中の前記窒素酸化物の化学量論反応等量を上回るアンモニア含有化合物を加えることと、
前記第1触媒層を通して前記排ガスを流すことと、
前記排ガス中の前記窒素酸化物の化学量論反応等量を上回るアンモニアを選択的に触媒分解することと、
選択的に触媒分解されてはいないアンモニアとの反応により前記窒素酸化物を触媒還元することと
を含む方法。 - 前記窒素酸化物の少なくとも95%が、前記第1触媒層を出る前記排ガスから除去される、請求項1に記載の方法。
- 前記窒素酸化物の少なくとも97%が、前記第1触媒層を出る前記排ガスから除去される、請求項1に記載の方法。
- 約5ppmvd未満のアンモニアが前記第1触媒層を出る、請求項1に記載の方法。
- 約3ppmvd未満のアンモニアが前記第1触媒層を出る、請求項1に記載の方法。
- 約2ppmvd未満のアンモニアが前記第1触媒層を出る、請求項1に記載の方法。
- 前記排ガスは所定量の三酸化硫黄をさらに含み、前記第1触媒層を通して前記排ガスを流すことの結果、前記所定量の三酸化硫黄を実質的に増加させることがない、請求項1に記載の方法。
- 前記第1触媒層は、
無機酸化物成分50−99.9重量%と、
ルテニウムを含む触媒活性金属機能群と
を有する均一組成物から形成される少なくとも1つのモノリシック構造触媒体を含む、請求項1に記載の方法。 - 前記均一組成物は、ルテニウムを含む前記触媒活性金属機能群を0.01重量%から0.2重量%まで有する、請求項8に記載の方法。
- 前記均一組成物は、ルテニウムを含む前記触媒活性金属機能群を約1重量%から約5重量%まで有する、請求項8に記載の方法。
- 前記モノリシック構造触媒体は、付加的触媒材料によりコーティングされる、請求項8に記載の方法。
- 前記第1触媒層の下流に少なくとも1つの付加的窒素酸化物還元触媒層を与えることと、
前記少なくとも1つの付加的窒素酸化物還元触媒層を通して前記排ガスを流すことと
をさらに含む、請求項1に記載の方法。 - 前記モノリシック構造触媒体は、付加的触媒材料によりコーティングされる、請求項12に記載の方法。
- 前記窒素酸化物の少なくとも95%が、前記少なくとも1つの付加的窒素酸化物還元触媒層を出る前記排ガスから除去される、請求項12に記載の方法。
- 前記窒素酸化物の少なくとも97%が、前記少なくとも1つの付加的窒素酸化物還元触媒層を出る前記排ガスから除去される、請求項12に記載の方法。
- 約2ppmvd未満のアンモニアが前記少なくとも1つの付加的窒素酸化物還元触媒層を出る、請求項12に記載の方法。
- 排ガスから窒素酸化物を除去する方法であって、
第1触媒層を与えることと、
前記第1触媒層の1つ以上の点において等量を上回るNH3/NOxモル比を生成する量のアンモニア含有化合物を前記排ガスに加えることと、
前記第1触媒層を通して前記排ガスを流すことと、
前記第1触媒層の前記1つ以上の点において等量を上回るアンモニアを選択的に触媒分解することと、
選択的に触媒分解されてはいないアンモニアとの反応により窒素酸化物を触媒還元することと
を含む方法。 - 前記窒素酸化物の少なくとも95%が、前記第1触媒層を出る前記排ガスから除去される、請求項17に記載の方法。
- 前記窒素酸化物の少なくとも97%が、前記第1触媒層を出る前記排ガスから除去される、請求項17に記載の方法。
- 前記窒素酸化物の少なくとも99%が、前記第1触媒層を出る前記排ガスから除去される、請求項17に記載の方法。
- 約5ppmvd未満のアンモニアが前記第1触媒層を出る、請求項17に記載の方法。
- 約3ppmvd未満のアンモニアが前記第1触媒層を出る、請求項17に記載の方法。
- 約2ppmvd未満のアンモニアが前記第1触媒層を出る、請求項17に記載の方法。
- 前記排ガスは所定量の三酸化硫黄をさらに含み、前記第1触媒層を通して前記排ガスを流すことの結果、前記所定量の三酸化硫黄を実質的に増加させることがない、請求項17に記載の方法。
- 前記第1触媒層は、
無機酸化物成分50−99.9重量%と、
ルテニウムを含む触媒活性金属機能群と
を有する均一組成物から形成される少なくとも1つのモノリシック構造触媒体を含む、請求項17に記載の方法。 - 前記均一組成物は、ルテニウムを含む前記触媒活性金属機能群を0.01重量%から0.2重量%まで有する、請求項25に記載の方法。
- 前記均一組成物は、ルテニウムを含む前記触媒活性金属機能群を約1重量%から約5重量%まで有する、請求項25に記載の方法。
- 前記モノリシック構造触媒体は、付加的触媒材料によりコーティングされる、請求項25に記載の方法。
- 前記第1触媒層の下流に少なくとも1つの付加的窒素酸化物還元触媒層を与えることと、
前記少なくとも1つの付加的窒素酸化物還元触媒層を通して前記排ガスを流すことと
をさらに含む、請求項17に記載の方法。 - 前記窒素酸化物の少なくとも97%が、前記少なくとも1つの付加的窒素酸化物還元触媒層を出る前記排ガスから除去される、請求項29に記載の方法。
- 前記窒素酸化物の少なくとも99%が、前記少なくとも1つの付加的窒素酸化物還元触媒層を出る前記排ガスから除去される、請求項29に記載の方法。
- 約2ppmvd未満のアンモニアが前記少なくとも1つの付加的窒素酸化物還元触媒層を出る、請求項29に記載の方法。
- 無機酸化物成分50−99.9重量%と、
ルテニウムを含む触媒活性金属機能群と
を含む均一組成物を有するモノリシック構造触媒体を備える組成物。 - 前記均一組成物は、ルテニウムを含む前記触媒活性金属機能群を少なくとも0.01重量%含む、請求項33に記載の組成物。
- 前記モノリシック構造触媒体は、付加的触媒材料によりコーティングされる、請求項33に記載の組成物。
- 前記モノリシック構造触媒体は、付加的触媒材料により含浸される、請求項33に記載の組成物。
- 排ガスから窒素酸化物を除去するシステムであって、
アンモニア分解触媒層と、
前記アンモニア分解触媒層の下流の窒素酸化物還元触媒層と
を含むシステム。 - 前記システムは、二酸化硫黄の酸化を実質的に全く与えない、請求項37に記載のシステム。
- 前記アンモニア分解触媒層の上流に付加的な窒素酸化物還元触媒をさらに含む、請求項37に記載のシステム。
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2007
- 2007-08-01 DE DE602007012553T patent/DE602007012553D1/de active Active
- 2007-08-01 WO PCT/US2007/017154 patent/WO2008016627A1/en active Application Filing
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- 2010-02-08 US US12/702,010 patent/US7833932B1/en active Active
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Also Published As
Publication number | Publication date |
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CA2659740C (en) | 2016-05-03 |
EP2054139B1 (en) | 2011-02-16 |
WO2008016627A9 (en) | 2008-04-10 |
WO2008016627A1 (en) | 2008-02-07 |
US20110172090A1 (en) | 2011-07-14 |
WO2008016627A8 (en) | 2008-05-08 |
DK2054139T3 (da) | 2011-06-06 |
DK2363194T3 (da) | 2013-02-11 |
US20080031793A1 (en) | 2008-02-07 |
CA2659740A1 (en) | 2008-02-07 |
DE602007012553D1 (de) | 2011-03-31 |
US8137633B2 (en) | 2012-03-20 |
EP2363194B1 (en) | 2012-10-31 |
EP2363194A1 (en) | 2011-09-07 |
EP2054139A1 (en) | 2009-05-06 |
ATE498452T1 (de) | 2011-03-15 |
US7658898B2 (en) | 2010-02-09 |
US7833932B1 (en) | 2010-11-16 |
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