DE3608635A1 - EXHAUST GAS REACTOR AND METHOD FOR THE PRODUCTION THEREOF - Google Patents
EXHAUST GAS REACTOR AND METHOD FOR THE PRODUCTION THEREOFInfo
- Publication number
- DE3608635A1 DE3608635A1 DE19863608635 DE3608635A DE3608635A1 DE 3608635 A1 DE3608635 A1 DE 3608635A1 DE 19863608635 DE19863608635 DE 19863608635 DE 3608635 A DE3608635 A DE 3608635A DE 3608635 A1 DE3608635 A1 DE 3608635A1
- Authority
- DE
- Germany
- Prior art keywords
- exhaust gas
- reactor according
- gas reactor
- plates
- exhaust
- 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.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000000034 method Methods 0.000 title claims description 5
- 239000000919 ceramic Substances 0.000 claims description 23
- 239000006260 foam Substances 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 150000004706 metal oxides Chemical class 0.000 claims description 13
- 239000011148 porous material Substances 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 239000010410 layer Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 229910044991 metal oxide Inorganic materials 0.000 claims description 9
- 239000010953 base metal Substances 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000002344 surface layer Substances 0.000 claims description 8
- 239000012876 carrier material Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229910000510 noble metal Inorganic materials 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 230000003197 catalytic effect Effects 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 239000002984 plastic foam Substances 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims 2
- 229910052804 chromium Inorganic materials 0.000 claims 2
- 229910052748 manganese Inorganic materials 0.000 claims 2
- 229910020599 Co 3 O 4 Inorganic materials 0.000 claims 1
- 229910010413 TiO 2 Inorganic materials 0.000 claims 1
- 238000007654 immersion Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 39
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 229910002091 carbon monoxide Inorganic materials 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 238000012549 training Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 229940117975 chromium trioxide Drugs 0.000 description 3
- WGLPBDUCMAPZCE-UHFFFAOYSA-N chromium trioxide Inorganic materials O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 3
- GAMDZJFZMJECOS-UHFFFAOYSA-N chromium(6+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+6] GAMDZJFZMJECOS-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 206010027439 Metal poisoning Diseases 0.000 description 1
- 241001620634 Roger Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229960005070 ascorbic acid Drugs 0.000 description 1
- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 208000008127 lead poisoning Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- BJBUTJPAZHELKY-UHFFFAOYSA-N manganese tungsten Chemical compound [Mn].[W] BJBUTJPAZHELKY-UHFFFAOYSA-N 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
- 238000005259 measurement Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Classifications
-
- 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]
- B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
-
- 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
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
-
- 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
-
- 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
-
- 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
-
- 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
- F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Toxicology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Description
Die Erfindung betrifft einen Abgasreaktor mit einem feuerfesten Trägermaterial aus offenporigem Keramik schaum, der eine katalytisch wirkende Oberflächenschicht aufweist, sowie Verfahren zur Herstellung eines solchen Abgasreaktors.The invention relates to an exhaust gas reactor a refractory base material made of open-pore ceramic foam that has a catalytically active surface layer has, and methods for producing such Exhaust gas reactor.
Poröser Keramikschaum wird dadurch hergestellt, daß ein offenporiger Kunststoffschaum mit einer Schlicker masse aus Keramik gefüllt wird und dann bei hoher Tempe ratur der Kunststoffschaum vergast wird. Der erhaltene poröse Keramikschaum ist gleichfalls offenporig und wird mit einer katalytischen Schicht versehen die auf den jeweiligen chemischen Prozeß abgestimmt ist. Die derart hergestellten Katalysatoren aus porösem Keramikschaum werden zu monolithischen Blöcken entsprechender Größe weiterverarbeitet und in dieser Form eingesetzt.Porous ceramic foam is made that an open pore plastic foam with a slip mass is filled from ceramic and then at high temperature the plastic foam is gasified. The received one porous ceramic foam is also open-pored and will provided with a catalytic layer on the the respective chemical process is coordinated. The so manufactured catalysts from porous ceramic foam become monolithic blocks of the appropriate size processed and used in this form.
Der Erfindung liegt die Aufgabe zugrunde, einen Abgasreaktor der eingangs genannten Art so auszubilden, daß dieser kostengünstig herstellbar ist, eine große Variabilität und eine hohe Effizienz auch bei hohen Temperaturen aufweist, einfach und schnell zu warten und sich ändernden Bedingungen anpaßbar ist.The invention has for its object a To design the exhaust gas reactor of the type mentioned at the beginning that this is inexpensive to manufacture, a big one Variability and high efficiency even at high Temperature, easy and quick to maintain and is adaptable to changing conditions.
Die Lösung dieser Aufgabe ist im Anspruch 1 angegeben.The solution to this problem is in claim 1 specified.
Weiterbildungen der Erfindung einschließlich eines Verfahrens zur Herstellung solcher Abgasreaktoren sind Gegenstand der Unteransprüche.Developments of the invention including of a method for producing such exhaust gas reactors are the subject of the subclaims.
Versuche haben gezeigt daß ein aus mehreren hintereinander liegenden Platten aufgebauter Abgasreak tor wesentlich effizienter wirkt als ein Abgasreaktor aus einem monolithischen Block entsprechender Größe. Darüberhinaus ist ein Abgasreaktor aus mehreren Platten wesentlich einfacher herzustellen und auch einfacher mit einer katalytisch wirkenden Oberflächenschicht zu versehen, als ein großer monolithischer Block. Je nach der Zusammensetzung und Temperatur des nachzuverbrennen den Abgases kann durch die Zusammenstellung, Ausbildung und Bemessung der Platten eine maßgeschneiderte Lösung gefunden werden. Eine Anpassung an die jeweiligen Be dingungen ist auch bei Änderungen schnell durch den Ein satz oder Austausch von Platten möglich. Insgesamt kann wegen der großen inneren Oberfläche des Keramikschaums ein Abgasreaktor mit kleinem Volumen bezogen auf den je weiligen Gasdurchsatz verwirklicht werden. Ein solcher kom pakter Abgasreaktor ist insbesondere auch wichtig, wenn bei der Nachrüstung von Kraftfahrzeugen ein üblicher Schall dämpfer durch einen Abgasreaktor ersetzt werden soll, der die vorgegebenen Maße und Einbaubedingungen des jeweiligen Schalldämpfers berücksichtigen muß.Experiments have shown that one out of several Exhaust freak built up one behind the other tor works much more efficiently than an exhaust gas reactor from a monolithic block of the appropriate size. In addition, an exhaust gas reactor is made up of several plates much easier to manufacture and also easier with a catalytically active surface layer provided as a large monolithic block. Depending on the composition and temperature of the afterburn the exhaust gas can be put together through training and dimensioning of the slabs a tailor-made solution being found. An adaptation to the respective Be conditions is quick through the on even with changes plates can be set or exchanged. Overall, can because of the large inner surface of the ceramic foam an exhaust gas reactor with a small volume based on each because of the gas throughput. Such a com pact exhaust gas reactor is especially important if a common sound when retrofitting motor vehicles damper to be replaced by an exhaust gas reactor that the specified dimensions and installation conditions of the respective Muffler must take into account.
Für den Wirkungsgrad eines Abgasreaktors nach der Erfindung ist neben der sehr großen inneren Oberfläche eines Keramikschaums, bezogen auf das äußere Volumen, auch die hohe Reaktionswahrscheinlichkeit maßgebend, die durch die mikroturbulente Nachströmung der einzelnen Stäbchen oder Fasern des Keramikschaums bewirkt wird.For the efficiency of an exhaust gas reactor after the invention is in addition to the very large inner surface a ceramic foam, based on the outer volume, too determining the high probability of reaction caused by the microturbulent afterflow of the individual rods or fibers of the ceramic foam is effected.
Die Porosität der Platten liegt in Weiterbildung der Erfindung zwischen 10 und 60 ppi, vorzugsweise zwischen 10 und 30 ppi. Dabei wird unter ppi (pors per inch) die Zahl der Poren auf je 1 Inch (2,54 cm) als Längeneinheit verstanden.The porosity of the plates lies in further training the invention between 10 and 60 ppi, preferably between 10 and 30 ppi. Under ppi (pors per inch) the Number of pores per 1 inch (2.54 cm) as a unit of length Roger that.
Mit Vorteil können bei einem Abgasreaktor nach der Erfindung unterschiedlich ausgebildete Platten vorge sehen sein. Die unterschiedliche Ausbildung kann darin bestehen, daß die Porosität der Platten unterschiedlich ist, beispielsweise auf eine Platte mit groben Poren eine oder weitere Platten mit feineren Poren folgen. Die unter schiedliche Ausbildung kann aber auch oder zusätzlich in unterschiedlichen Katalytischen Oberflächenschichten be stehen. Darüberhinaus und gegebenenfalls zusätzlich können die Platten unterschiedliche Form und Größe besitzen, um beispielsweise aerodynamisch ein bestimmtes Strömungsver halten zu erzielen. Can advantageously be used in an exhaust gas reactor the invention differently designed plates pre to be seen. The different training can be in it exist that the porosity of the plates is different is, for example on a plate with coarse pores or more plates with finer pores follow. The below different training can also or additionally in different catalytic surface layers stand. In addition and if necessary additionally the plates have different shapes and sizes for example, aerodynamically a certain flow rate keep achieving.
In weiterer Ausbildung der Erfindung ist vor gesehen, daß vor und/oder zwischen und/oder hinter katalytisch beschichteten Platten eine oder mehrere unbeschichtete Platten angeordnet sind. Die unbeschich teten Platten wirken dabei insbesondere als Filter. Da durch können vor dem Eintritt in den Abgasreaktor uner wünschte Teilchen aus dem Gasstrom ausgefiltert und durch Anordnung weiterer unbeschichteter Platten innerhalb und hinter dem Reaktor Reaktionsprodukte ausgefiltert werden. Die Porengröße der unbeschichteten Filterplatten wird dabei auf die Größe der auszufilternden Partikel abge stimmt. Wenn am Ende des Abgasreaktors eine unbeschichtete Platte mit sehr feinen Poren als Feinstfilterplatte an geordnet wird kann sichergestellt werden, daß sich ab lösende Partikel des Keramikträgermaterials mit Bestand teilen der Washcoat-Grundschicht und des Katalysator materials nicht in die Umwelt gelangen.In a further development of the invention is before seen that before and / or between and / or behind catalytically coated plates one or more uncoated plates are arranged. The uncoated teten plates act in particular as a filter. There through un before entering the exhaust gas reactor desired particles filtered out of the gas stream and through Arrangement of further uncoated panels within and reaction products are filtered out behind the reactor. The pore size of the uncoated filter plates becomes abge on the size of the particles to be filtered out Right. If an uncoated at the end of the exhaust gas reactor Plate with very fine pores as a fine filter plate order can be ensured that from Solvent particles of the ceramic carrier material with inventory divide the washcoat base layer and the catalyst materials do not get into the environment.
Die einzelnen Platten des Abgasreaktors können wie ein Sandwich aneinanderliegen. In Weiterbildung der Erfindung ist aber vorgesehen, daß die Platten mit Abstand zueinander angeordnet sind, wobei der Abstand jeweils gleich groß ist oder auch unterschiedliche Werte annehmen kann. Durch Abstände zwischen den Platten wird vermieden, daß sich bevorzugte Durchströmungsstraßen bilden, Teile der Platten also nicht oder weniger durchströmt werden, so daß der Wirkungsgrad - bezogen auf die Flächeneinheit - abnimmt. Bei richtiger Wahl des Abstandes treten Ver wirbelungen zwischen den Platten auf, die für einen Aus gleich sorgen. Der Abstand ist also unter Berücksichtigung der Durchströmungsgeschwindigkeiten, der Plattenabmessun gen und der Eigenschaften der jeweiligen Gase zu wählen. Mit Rücksicht auf eine kompakte Ausbildung des Abgasreak tors sollen die Abstände dabei aber möglichst klein bleiben.The individual plates of the exhaust gas reactor can lie against one another like a sandwich. In a further development of the invention, however, it is provided that the plates are arranged at a distance from one another, the distance being in each case the same size or also having different values. By spacing between the plates, it is avoided that preferred flow paths are formed, ie parts of the plates are not or only partially flowed through, so that the efficiency - based on the unit area - decreases. If the distance is selected correctly, swirls occur between the plates, which ensure an equalization. The distance should therefore be selected taking into account the flow velocities, the plate dimensions and the properties of the respective gases. With a view to a compact design of the exhaust gas reactor, the distances should remain as small as possible.
Wenn nach einer weiteren Empfehlung der Erfin dung die Platten einzeln austauschbar sind, so ist ein solcher Abgasreaktor in wartungstechnischer Hinsicht ein facher und kostengünstiger als ein Reaktor mit einem monolithischen Block. Einzelne Platten können dann zur Reparatur oder auch dann gegen andere Platten ausgetauscht werden, wenn sich die Verhältnisse ändern. Die unbeschich teten Filterplatten können zur Entfernung des angefalle nen Staubes ausgetauscht oder auch nur nach dem Herausneh men gereinigt werden.If, according to a further recommendation by the Erfin If the plates are individually interchangeable, there is a such an exhaust gas reactor from a maintenance point of view simpler and cheaper than a reactor with one monolithic block. Individual plates can then be used for Repair or then exchanged for other plates when the conditions change. The uncoated Filter plates can be used to remove the accumulated exchanged dust or only after removing it men to be cleaned.
Eine besonders vorteilhafte Weiterbildung, die auch von unabhängiger Bedeutung ist sieht vor, daß als Katalysatormaterial Nichtedelmetalloxide verwendet werden.A particularly advantageous training that It is also of independent importance that Non-noble metal oxide catalyst material can be used.
Die Reaktionstemperatur solcher Nichtedelmetall oxide liegt höher als die üblicherweise verwendeter Edel metalle, beispielsweise Platin, und beträgt zwischen etwa 450 und 750°C. Die Wirkung läßt dadurch auch bei hoher Belastung und hohen Temperaturen kaum nach, so daß sich ein solcher Abgasreaktor nicht nur für Verbrennungsmotoren von Kraftfahrzeugen, sondern auch für stationäre Motoren besonders eignen. Die Nichtedelmetalloxide sind außerdem resistent gegen Bleivergiftungen und gegen andere Schad stoffe, z. B. Chlor, Fluor, Schwefel, wie sie in unge reinigten Gasen von stationären Motoren vorkommen.The reaction temperature of such base metal oxide is higher than the commonly used noble metals, for example platinum, and is between about 450 and 750 ° C. The effect leaves even at high Hardly after exposure to high temperatures, so that such an exhaust gas reactor not only for internal combustion engines of motor vehicles, but also for stationary engines particularly suitable. The base metal oxides are also resistant to lead poisoning and other harm fabrics, e.g. B. chlorine, fluorine, sulfur, as in unge cleaned gases from stationary engines.
Die katalytisch wirkende Oberflächenschicht aus einem Nichtedelmetalloxid kann zweckmäßig auf einer soge nannten Washcoat-Grundschicht aus Aluminimoxid in der γ- Modifikation angeordnet sein. Eine solche Washcoat-Grund schicht ist bekannt. Sie sorgt für eine schnellere und bessere Reaktion. Zur Verbesserung der Langzeitstabilität können der Grundschicht Zusätze beigegeben werden, bei spielsweise Verbindungen von Elementen aus der Gruppe der seltenen Erden.The catalytically active surface layer made of a non-noble metal oxide can expediently be arranged on a so-called washcoat base layer made of aluminum oxide in the γ modification. Such a washcoat base layer is known. It ensures a faster and better response. To improve long-term stability, additives can be added to the base layer, for example connections of elements from the group of rare earths.
Für eine reduzierende Reaktion steht eine Weiter bildung der Erfindung insbesondere Oxide der Metalle Eisen, Cobalt, Nickel, Titan, Vanadium, Chrom, Molybdän, Wolfram Mangan vor, wobei auch Mischungen der Oxide Ver wendung finden können.Another stands for a reducing reaction Formation of the invention in particular oxides of metals Iron, cobalt, nickel, titanium, vanadium, chrome, molybdenum, Tungsten manganese before, mixtures of oxides Ver can find application.
Für eine oxidierende Reaktion werden Oxide ins besondere der Metalle Kupfer, Chrom, Molybdän, Wolfram, Mangan, Vanadium, Eisen sowie auch Mischungen der Oxide vorgeschlagen. Oxides are used for an oxidizing reaction special of the metals copper, chrome, molybdenum, tungsten, Manganese, vanadium, iron and also mixtures of the oxides suggested.
In weiterer Ausbildung der Erfindung kann der Abgasreaktor zweistufig ausgebildet sein, wobei in der ersten Stufe eine reduzierende Reaktion und in der zweiten Stufe eine oxidierende Reaktion stattfindet. Beispielsweise wird in der ersten Stufe eines Abgasreaktors für Verbren nungsmotoren Stickoxide (NO x ) mittels des im Abgas vor handenen Kohlenmonoxids (CO) am Katalysatormaterial zu unschädlichem Stickstoff reduziert. In der zweiten Stufe erfolgt dann eine Oxidation des überschüssigen Kohlen monoxids zu Kohlendioxid, wobei gegebenenfalls Sauerstoff in Form von Luft zugegeben ist. In anderen Einsatzbereichen eines solchen Abgasreaktors können auch andere Bestand teile oxidiert werden, insbesondere organische Anteile, beispielsweise Kohlenwasserstoffe. Solche Bestandteile fallen unter anderem in Abgasen von Farbspritzkabinen an. Die beiden Stufen weisen je wenigstens eine Platte auf und können in getrennten oder auch in einem gemeinsamen Gehäuse angeordnet sein. Vor der ersten Stufe wird zweck mäßig wenigstens eine unbeschichtete Filterplatte angeord net. Ein solches Filter kann auch Rußpartikel zurückhal ten, die dann nachverbrannt werden können, wenn das Vor filter eine Temperatur über 600°C erreicht. Nach der zwei ten Stufe kann eine unbeschichtete, feinporige Filterplat te als Feinstfilter folgen, das insbesondere auch abge löste Teile der Keramikträgermaterials zurückhält.In a further embodiment of the invention, the exhaust gas reactor can be designed in two stages, a reducing reaction taking place in the first stage and an oxidizing reaction taking place in the second stage. For example, in the first stage of an exhaust gas reactor for combustion engines, nitrogen oxides (NO x ) are reduced to harmless nitrogen by means of the carbon monoxide (CO) present in the exhaust gas on the catalyst material. In the second stage, the excess carbon monoxide is then oxidized to carbon dioxide, oxygen being optionally added in the form of air. In other areas of use of such an exhaust gas reactor, other constituent parts can also be oxidized, in particular organic components, for example hydrocarbons. Such components occur, among other things, in exhaust gases from paint spray booths. The two stages each have at least one plate and can be arranged in separate or in a common housing. Before the first stage, at least one uncoated filter plate is expediently arranged. Such a filter can also retain soot particles, which can then be combusted when the pre-filter reaches a temperature above 600 ° C. After the second stage, an uncoated, fine-pored filter plate can follow as a fine filter, which in particular also retains detached parts of the ceramic carrier material.
Ein Verfahren zur Herstellung eines Abgasreaktors sieht vor, daß das Nichtedelmetalloxid dem Schlicker zugesetzt wird, der - wie eingangs erläutert - zur Her stellung des Keramikschaums aus offenporigem Kunststoff schaum verwendet wird. Nach dem Brennen des mit Keramik material beschichteten Schaums ist das Nichtedelmetall oxid dann Bestandteil des Keramikmaterials und damit auch an dessen Oberfläche vorhanden. Eine solche Beimischung kommt insbesondere dann in Frage, wenn das Oxid verhält nismäßig billig ist.A method of manufacturing an exhaust gas reactor provides that the base metal oxide the slip is added, which - as explained at the beginning - to the fro position of the ceramic foam made of open-pore plastic foam is used. After firing the with ceramic material-coated foam is the base metal oxide then part of the ceramic material and thus also present on its surface. Such an admixture is particularly suitable if the oxide behaves is reasonably cheap.
Eine Alternative Möglichkeit besteht darin, den mit Keramikmasse überzogenen, vorgetrockneten, noch nicht gebrannten Schaum vorzugsweise durch Tauchen mit einer besonderen Aufschlemmung zu überziehen, die das Nicht edelmetalloxid und gegebenenfalls weitere Bestandteile enthält, die das Haften des Oxids sowie die katalytische Funktion unterstützen. Neben beispielsweise Titandioxid kann die Aufschlemmung zusätzlich das Material der Grund schicht (Aluminiumoxid) enthalten.An alternative possibility is the pre-dried with ceramic mass, not yet burnt foam preferably by dipping with a special slurry to cover the not noble metal oxide and possibly other components contains the adherence of the oxide as well as the catalytic Support function. In addition to, for example, titanium dioxide the slurry can also material the reason layer (aluminum oxide) included.
Eine weitere Möglichkeit zur Aufbringung des Katalysatormaterials besteht darin, daß der mit Keramik masse sowie gegebenenfalls der Grundschicht überzogene, ungebrannte oder gebrannte Schaum mit einer Lösung eines Metallsalzes der Nichtedelmetalle imprägniert wird und dann das Metallsatz durch eine Wärmebehandlung, insbe sondere Brennen, in das Metalloxid umgewandelt und auf dem Keramikschaum fixiert wird.Another way to apply the Catalyst material is that with ceramic mass and, if applicable, the base layer, unburned or baked foam with a solution of one Metal salt of the base metal is impregnated and then the metal set by heat treatment, esp special burning, converted into the metal oxide and on the ceramic foam is fixed.
In den Zeichnungen zeigen:The drawings show:
Fig. 1 schematisch den Längsschnitt eines Abgas reaktors als Ausführungsbeispiel der Erfindung, Fig. 1 shows schematically the longitudinal section of an exhaust gas reactor embodying the invention,
Fig. 2 den Prinziplängsschnitt eines zweistufigen Abgasreaktors als Ausführungsbeispiel der Erfindung. Fig. 2 shows the principle longitudinal section of a two-stage exhaust gas reactor as an embodiment of the invention.
Wie die schematische Darstellung in Fig. 1 zeigt, sind in einem Abgasreaktor nach der Erfindung drei Platten 1 aus offenporigem Keramikschaum mit einer katalytisch wirkenden Oberflächenschicht in Richtung des durchströmenden Abgases (Pfeile 10, 11) hintereinander an geordnet.As the schematic representation in FIG. 1 shows, in an exhaust gas reactor according to the invention three plates 1 made of open-pored ceramic foam with a catalytically active surface layer in the direction of the exhaust gas flowing through (arrows 10 , 11 ) are arranged one behind the other.
Vor der ersten Reaktorplatte 1 ist eine nicht mit Katalysatormaterial beschichtete Platte 2 aus offen porigem Keramikschaum angeordnet, die als Filterplatte für im Abgasstrom enthaltene Partikel dient. Des weiteren ist hinter der letzten Reaktorplatte 1 eine Feinstfilter platte 3 aus offenporigem Keramikschaum ohne Katalysator beschichtung angeordnet, die sehr feine Poren besitzt und abgelöste Partikel des Keramikgrundmaterials aus filtert. Die Abstände zwischen den einzelnen Platten 1, 2 und 2 sorgen für eine Verwirbelung. Sie sind ungleich mäßig so gewählt, daß die Reaktion möglichst vollständig ist, der Durchströmwiderstand klein bleibt und die Ab messungen dabei nicht zu groß werden.In front of the first reactor plate 1 there is a plate 2 made of open-pored ceramic foam which is not coated with catalyst material and which serves as a filter plate for particles contained in the exhaust gas stream. Furthermore, a fine filter plate 3 made of open-pore ceramic foam without a catalyst coating is arranged behind the last reactor plate 1 , which has very fine pores and filters out detached particles of the ceramic base material. The distances between the individual plates 1 , 2 and 2 cause turbulence. They are chosen unevenly so that the reaction is as complete as possible, the flow resistance remains small and the measurements do not become too large.
Fig. 2 zeigt schematisch einen zweistufigen Abgasreaktor. Die beiden Stufen sind dabei in getrennten Behältern 4 und 5 angeordnet, die über ein Rohr 6 ver bunden sind. Das zu behandelnde Abgas strömt in Richtung des Pfeiles 10 in den Behälter 4 ein. Dort ist zunächst eine unbeschichtete Filterplatte 2 angeordnet, der je weils mit Abstand zwei beschichtete Reaktorplatten 1 folgen. In diesen Platten 1 reagieren die Stickoxide (NO x ) des Abgases mit dem ebenfalls vorhandenen Kohlen monoxid (CO), wobei die Stickoxide zu ungiftigem Stick stoff reduziert werden. Im Rohr 6 wird dem Abgas dann mittels einer Düse 7 Luft über ein Rohr 8 zugeführt, bei spielsweise mittels einer Pumpe in Form eines Gebläses. Nimmt man an, daß das entstickte Abgas im Rohr 6 noch einen Anteil von etwa 1% CO hat, so muß zur vollständigen Verbrennung etwa 0,5% O2 aus der Luft zugeführt werden. Bei einem Sauerstoffanteil von etwa 20% bedeutet das einen Zusatz von etwa 2,5% Luft. Da üblicherweise über stöchiometrisch gearbeitet wird, setzt man in der Praxis etwa die doppelte Menge zu, d.h. etwa 5% Luft. Fig. 2 shows schematically a two-stage exhaust gas reactor. The two stages are arranged in separate containers 4 and 5 , which are connected via a tube 6 ver. The exhaust gas to be treated flows into the container 4 in the direction of the arrow 10 . There, an uncoated filter plate 2 is initially arranged, each of which is followed by two coated reactor plates 1 at a distance. In these plates 1 , the nitrogen oxides (NO x ) of the exhaust gas react with the carbon monoxide (CO) which is also present, the nitrogen oxides being reduced to non-toxic nitrogen. In the tube 6 , the exhaust gas is then supplied with air via a tube 8 by means of a nozzle 7 , for example by means of a pump in the form of a fan. Assuming that the denitrified exhaust gas in tube 6 still has a share of about 1% CO, about 0.5% O 2 must be supplied from the air for complete combustion. With an oxygen content of approximately 20%, this means an addition of approximately 2.5% air. Since work is usually carried out stoichiometrically, in practice about twice the amount is added, ie about 5% air.
Im Gefäß 5 durchströmt das Abgas wiederum zunächst ein Filter 2 und dann zwei Reaktorplatten 1, an deren Oberfläche das Kohlenmonoxid zu Kohlendioxid ver brannt wird. Eine Feinstfilterplatte 2 am Ausgang des Gefäßes 5 beseitigt Reaktionspartikel und feine Stäube.In the vessel 5 , the exhaust gas in turn first flows through a filter 2 and then two reactor plates 1 , on the surface of which the carbon monoxide is burned to form carbon dioxide. A very fine filter plate 2 at the outlet of the vessel 5 removes reaction particles and fine dusts.
Bei einem Ausführungsbeispiel wurde als Metall oxid Chromtrioxid verwendet. Das Keramikschaum-Träger material wurde mit Ammoniumdichromatlösung (zwischen 3 und 25%) getränkt und dann die Substanz auf dem Träger material thermisch zu Chromtrioxid (Cr2O3) zersetzt. Das Ammoniumdichromat kann auch mit einem Reduktionsmittel, wie z.B. Ethanol oder Ascorbinsäure zu dreiwertigem Chromtrioxid reduziert werden. Anschließend erfolgt durch Trocknung und Glühen die Fixierung auf dem Trägermaterial. Der thermische Aufwand ist bei einer solchen Umwandlung gering.In one embodiment, chromium trioxide was used as the metal oxide. The ceramic foam carrier material was soaked in ammonium dichromate solution (between 3 and 25%) and then the substance on the carrier material was thermally decomposed to chromium trioxide (Cr 2 O 3 ). The ammonium dichromate can also be reduced to trivalent chromium trioxide using a reducing agent such as ethanol or ascorbic acid. The substrate is then fixed by drying and annealing. The thermal effort is low with such a conversion.
Claims (23)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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DE19863608635 DE3608635A1 (en) | 1986-03-14 | 1986-03-14 | EXHAUST GAS REACTOR AND METHOD FOR THE PRODUCTION THEREOF |
GB08705753A GB2188559A (en) | 1986-03-14 | 1987-03-11 | Exhaust gas reactor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE19863608635 DE3608635A1 (en) | 1986-03-14 | 1986-03-14 | EXHAUST GAS REACTOR AND METHOD FOR THE PRODUCTION THEREOF |
Publications (1)
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DE3608635A1 true DE3608635A1 (en) | 1987-09-17 |
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ID=6296411
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DE19863608635 Withdrawn DE3608635A1 (en) | 1986-03-14 | 1986-03-14 | EXHAUST GAS REACTOR AND METHOD FOR THE PRODUCTION THEREOF |
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DE (1) | DE3608635A1 (en) |
GB (1) | GB2188559A (en) |
Cited By (15)
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EP0341832A2 (en) * | 1988-05-13 | 1989-11-15 | Johnson Matthey Inc. | Treatment of diesel exhaust gas |
FR2650628A1 (en) * | 1989-08-04 | 1991-02-08 | Aris Sa | Alveolar filter especially for a catalytic convertor and process for its manufacture |
AT392736B (en) * | 1989-04-14 | 1991-05-27 | Krassnigg Franz | Combination filter for at least essentially gaseous media, and use thereof |
DE4134783A1 (en) * | 1991-10-22 | 1993-04-29 | Bosch Gmbh Robert | Electroconductive porous inorganic material used as filter or sensor - contains porous inorganic substance, pref. aluminosilicate or aluminium phosphate, and semiconducting metal oxide, pref. tin di:oxide, carbon di:oxide and/or zinc oxide |
EP0605995A1 (en) * | 1993-01-08 | 1994-07-13 | Ford Motor Company Limited | A two-stage catalyst system for internal combustion engine |
EP0605991A1 (en) * | 1993-01-07 | 1994-07-13 | Ford Motor Company Limited | Base metal only catalyst system for internal combustion engines |
EP0661768A1 (en) * | 1993-12-28 | 1995-07-05 | Chiyoda Corporation | Method of heat transfer in reformer |
EP0669156A2 (en) * | 1994-02-23 | 1995-08-30 | William C. Pfefferle | Catalytic method |
DE4431134A1 (en) * | 1994-09-01 | 1996-03-07 | Himmelsbach Johann | Improving the temp. resistance of catalytic converters |
WO1996031686A1 (en) * | 1995-04-07 | 1996-10-10 | Kerti Jozsef | Silencer of various functions to gasoline-powered vehicles |
US5876680A (en) * | 1996-06-12 | 1999-03-02 | Ford Global Technologies, Inc. | Bimetallic tungsten/platinum catalysts for lean-burn emissions |
DE10008609C1 (en) * | 2000-02-24 | 2001-09-27 | Bauer Kompressoren | Filter for cleaning a compressed gas has an oxidizing catalyst to separate and remove traces of oil and volatile organic compounds to give a clean gas meeting the required standards |
WO2012095728A1 (en) * | 2011-01-14 | 2012-07-19 | Toyota Motor Co Ltd | Base metal exhaust gas control apparatus and base metal exhaust gas control system for internal combustion engine |
WO2012137050A1 (en) * | 2011-04-04 | 2012-10-11 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas catalyst, method for the production of carrier, method for the production of exhaust gas catalyst, and apparatus for treating exhaust gas |
DE102012001654A1 (en) * | 2012-01-27 | 2013-08-01 | Vaillant Gmbh | filter |
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GB2310386A (en) * | 1996-02-23 | 1997-08-27 | Frederick Allen | Treating exhaust gases |
GB9621215D0 (en) | 1996-10-11 | 1996-11-27 | Johnson Matthey Plc | Emission control |
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US8062990B2 (en) | 1998-05-01 | 2011-11-22 | Basf Corporation | Metal catalyst carriers and catalyst members made therefrom |
ATE224507T1 (en) * | 1998-12-05 | 2002-10-15 | Johnson Matthey Plc | IMPROVEMENTS IN EXHAUST PARTICLE CONTROL |
GB2406802A (en) * | 2003-09-11 | 2005-04-13 | Caldo Environmental Engineerin | Reactor incorporating a filter system |
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JP5776773B2 (en) * | 2011-07-15 | 2015-09-09 | トヨタ自動車株式会社 | Exhaust gas purification device for internal combustion engine |
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IT979624B (en) * | 1973-02-28 | 1974-09-30 | Alfa Romeo Spa | SURRI DETECTOR DEVICE HEATING OF A CATALYST CROSSED BY THE EXHAUST GAS OF A COMBUSTION ENGINE |
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Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0341832A3 (en) * | 1988-05-13 | 1991-04-17 | Johnson Matthey Inc. | Treatment of diesel exhaust gas |
EP0341832A2 (en) * | 1988-05-13 | 1989-11-15 | Johnson Matthey Inc. | Treatment of diesel exhaust gas |
AT392736B (en) * | 1989-04-14 | 1991-05-27 | Krassnigg Franz | Combination filter for at least essentially gaseous media, and use thereof |
FR2650628A1 (en) * | 1989-08-04 | 1991-02-08 | Aris Sa | Alveolar filter especially for a catalytic convertor and process for its manufacture |
DE4134783A1 (en) * | 1991-10-22 | 1993-04-29 | Bosch Gmbh Robert | Electroconductive porous inorganic material used as filter or sensor - contains porous inorganic substance, pref. aluminosilicate or aluminium phosphate, and semiconducting metal oxide, pref. tin di:oxide, carbon di:oxide and/or zinc oxide |
EP0605991A1 (en) * | 1993-01-07 | 1994-07-13 | Ford Motor Company Limited | Base metal only catalyst system for internal combustion engines |
EP0605995A1 (en) * | 1993-01-08 | 1994-07-13 | Ford Motor Company Limited | A two-stage catalyst system for internal combustion engine |
US5876469A (en) * | 1993-12-28 | 1999-03-02 | Chiyoda Corporation | Method of heat transfer in reformer |
EP0661768A1 (en) * | 1993-12-28 | 1995-07-05 | Chiyoda Corporation | Method of heat transfer in reformer |
EP0669156A2 (en) * | 1994-02-23 | 1995-08-30 | William C. Pfefferle | Catalytic method |
EP0669156A3 (en) * | 1994-02-23 | 1995-12-13 | William C Pfefferle | Catalytic method. |
DE4431134A1 (en) * | 1994-09-01 | 1996-03-07 | Himmelsbach Johann | Improving the temp. resistance of catalytic converters |
WO1996031686A1 (en) * | 1995-04-07 | 1996-10-10 | Kerti Jozsef | Silencer of various functions to gasoline-powered vehicles |
US5876680A (en) * | 1996-06-12 | 1999-03-02 | Ford Global Technologies, Inc. | Bimetallic tungsten/platinum catalysts for lean-burn emissions |
DE10008609C1 (en) * | 2000-02-24 | 2001-09-27 | Bauer Kompressoren | Filter for cleaning a compressed gas has an oxidizing catalyst to separate and remove traces of oil and volatile organic compounds to give a clean gas meeting the required standards |
WO2012095728A1 (en) * | 2011-01-14 | 2012-07-19 | Toyota Motor Co Ltd | Base metal exhaust gas control apparatus and base metal exhaust gas control system for internal combustion engine |
WO2012137050A1 (en) * | 2011-04-04 | 2012-10-11 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas catalyst, method for the production of carrier, method for the production of exhaust gas catalyst, and apparatus for treating exhaust gas |
DE102012001654A1 (en) * | 2012-01-27 | 2013-08-01 | Vaillant Gmbh | filter |
Also Published As
Publication number | Publication date |
---|---|
GB8705753D0 (en) | 1987-04-15 |
GB2188559A (en) | 1987-10-07 |
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