KR20030084121A - Metallic monoliths substrate of 3-way catalytic converter - Google Patents
Metallic monoliths substrate of 3-way catalytic converter Download PDFInfo
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- KR20030084121A KR20030084121A KR1020020022635A KR20020022635A KR20030084121A KR 20030084121 A KR20030084121 A KR 20030084121A KR 1020020022635 A KR1020020022635 A KR 1020020022635A KR 20020022635 A KR20020022635 A KR 20020022635A KR 20030084121 A KR20030084121 A KR 20030084121A
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- foil
- metal
- catalyst
- catalytic converter
- carrier
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- 230000003197 catalytic effect Effects 0.000 title claims abstract description 39
- 239000000758 substrate Substances 0.000 title abstract description 4
- 239000011888 foil Substances 0.000 claims abstract description 97
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 32
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000007747 plating Methods 0.000 claims abstract description 23
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 16
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 14
- 229910052703 rhodium Inorganic materials 0.000 claims abstract description 10
- 239000010948 rhodium Substances 0.000 claims abstract description 10
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003054 catalyst Substances 0.000 claims description 89
- 229910052751 metal Inorganic materials 0.000 claims description 83
- 239000002184 metal Substances 0.000 claims description 83
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical group [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 17
- 230000009467 reduction Effects 0.000 claims description 15
- 229910052763 palladium Inorganic materials 0.000 claims description 10
- 230000037303 wrinkles Effects 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 230000008569 process Effects 0.000 description 14
- 239000007789 gas Substances 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 10
- 238000007254 oxidation reaction Methods 0.000 description 10
- 230000001603 reducing effect Effects 0.000 description 9
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 230000004913 activation Effects 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 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
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- 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
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/89—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
- B01J23/892—Nickel and noble metals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2807—Metal other than sintered metal
- F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Catalysts (AREA)
Abstract
Description
본 발명은 상하 돌기인 평면호일과 상하 돌출부위의 홈인 주름호일을 기계적으로 결합하여 만들어진 원통형 담체가 매니폴드앞에 설치됨에 따라 시동 초기때부터 차량의 배기가스를 정화시킬 수 있는 삼원촉매변환장치의 금속촉매담체에 관한 것으로, 더욱 상세하게는 섭씨 900도이상의 고온상태에서 삼원촉매반응이 일어나도록 기계적으로 결합된 상기 평면호일과 상기 주름호일의 원통형내에서 각기 배열 적층된 환원도금층과 산화도금층으로부터 산화/환원작용시켜 급가속및 급제동에도 유해 배출가스의 저감효율을 증진시킬 수 있는 금속촉매담체에 관한 것이다.The present invention is a metal of a three-way catalytic converter that can purify the exhaust gas of a vehicle from the beginning of the vehicle according to the cylindrical carrier made by mechanically combining the flat foil of the upper and lower projections and the corrugated foil of the grooves of the upper and lower protrusions is installed in front of the manifold. More specifically, the catalyst carrier, and more specifically, the oxidation of the planar foil and the oxidized plating layer respectively arranged in a cylindrical shape of the planar foil and the corrugated foil mechanically coupled to the three-way catalyst reaction at a high temperature of more than 900 degrees Celsius The present invention relates to a metal catalyst carrier capable of improving the efficiency of reducing harmful emissions even in rapid acceleration and braking by reducing action.
보통, 차량을 움직이게 하는 주동력의 엔진은 흡배기장치로서 연료를 실린더내 흡입기로 흡입하여 연소하고 연소후 가스를 배출해야 된다. 먼저, 흡기장치로는 실린더에 흡입하는 공기중 먼지등을 제거하는 에어클리너와 각 실린더에 혼합기를 분배하는 흡기매니폴드로 구성되어 있다. 배기장치로는 각 실린더의 배기가스를 종합하는 배기매니폴드, 배기파이프, 소음기및 배기가스중의 유해한 성분을 무해하게 산화/환원시키는 촉매변환장치로 구성되어 있다.Normally, a main engine for moving a vehicle is an intake / exhaust system, in which fuel is sucked into an in-cylinder inhaler to combust and exhaust gas after combustion. First, the intake apparatus is composed of an air cleaner for removing dust and the like in the air sucked into the cylinder, and an intake manifold for distributing the mixer to each cylinder. The exhaust system is composed of an exhaust manifold, exhaust pipe, silencer, and a catalytic converter that harmlessly oxidizes / reduces harmful components in the exhaust gas.
상기 배기파이프의 도중에 설치되는 촉매변환장치는 통과함에 따라 배기가스중 유해한 일산화탄소, 탄화수소및 질소산화물을 무해한 이산화탄소, 물및 질소로산화, 환원시키도록 되어 있다. 즉, 공기의 정화를 위해 탄화수소와 일산화탄소를 완전히 연소시켜야 하는 바, 자동차의 촉매변환장치에는 백금촉매가 들어 있어 공기 오염물질을 무해한 물질로 바뀌어 준다. 그리고, 상기 촉매변환장치는 기능상 산화촉매변환장치와 삼원촉매변환장치로 구분되고 있다.The catalytic converter installed in the middle of the exhaust pipe is configured to oxidize and reduce harmful carbon monoxide, hydrocarbons and nitrogen oxides in the exhaust gas to harmless carbon dioxide, water and nitrogen as they pass. In other words, the combustion of hydrocarbons and carbon monoxide must be completely burned in order to purify the air, and the catalytic converter of a car contains a platinum catalyst, thereby converting air pollutants into harmless substances. The catalytic converter is classified into an oxidation catalyst converter and a three-way catalyst converter in terms of function.
그 중 삼원촉매변환장치는 촉매작용을 하는 귀금속으로 백금+로듐 또는 백금+로듐+팔라듐을 사용하고 배기가스중의 일산화탄소, 탄화수소, 질소산화물을 동시에 저감시키는 기능을 갖게 되었다. 그래서 많이 사용되고 있는 삼원촉매변환장치는 자동차 엔진의 시동초기 촉매가 활성화되기 이전에 일정한 온도이하에서는 유해성분의 제거가 원활히 이루어지지 않고, 특히 촉매가 특정의 활성화 온도에 못할 경우에는 탄화수소를 정화시키지 못한 대로 대기중으로 배출하게 된다는 결점이 있었다.Among them, the three-way catalytic converter uses platinum + rhodium or platinum + rhodium + palladium as a noble metal to catalyze, and has the function of simultaneously reducing carbon monoxide, hydrocarbons and nitrogen oxides in the exhaust gas. Therefore, the three-way catalytic converter which is widely used does not smoothly remove harmful components below a certain temperature before the initial catalyst of the engine is activated, and it does not purify hydrocarbons especially when the catalyst does not reach a specific activation temperature. The drawback was that it would be released into the atmosphere as it was.
이를 테면, 차량의 냉간 시동시에 배출되는 유해배출물을 감소시켜야 하는 데, 이는 차량이 충분히 웜업된 다음 삼원촉매의 내부온도도 높아지므로, 효율이 높아져서 실제 차량으로부터 배출되는 유해 배출물은 매우 작다. 그러나, 차량의 웜업되지 않는 냉간 시동시에는 삼원촉매의 온도가 낮아져 유해 배출가스의 정화효율이 낮아짐으로 유해 배출물의 양이 많아지고, 이를 줄이고자 전기가열식 삼원촉매기를 채용하게 되었다.For example, the harmful emissions emitted during cold start of the vehicle should be reduced, since the internal temperature of the three-way catalyst also increases after the vehicle has been sufficiently warmed up, so that the efficiency is high and the harmful emissions emitted from the actual vehicle are very small. However, during cold start without warming up of the vehicle, the temperature of the three-way catalyst is lowered and the purification efficiency of the harmful exhaust gas is lowered, thereby increasing the amount of harmful emissions, and employing an electrically heated three-way catalyst to reduce this.
전기가열식 삼원촉매기에는 내부에 하니컴이 설치되어 가스를 정화하도록 되어 있고, 이 삼원촉매기가 배기가스를 높은 온도로 가열시켜 삼원촉매변환장치의 변화효율을 짧은 시간내에 상승시키므로, 냉간 시동시 전기를 가하여 빠른 시간내에 배기가스를 가열 정화시키는 것이다. 보통 금속하우징내에 들어 있는 담체 (SUBSTRATE)는 삼원촉매기의 골격으로 구술형, 세라믹 일체형, 그리고 금속일체형등이 있다.In the electric heating three-way catalyst, a honeycomb is installed inside to purify the gas.The three-way catalyst heats the exhaust gas to a high temperature to increase the change efficiency of the three-way catalytic converter in a short time. To purify the exhaust gas in a short time. SUBSTRATE, which is usually contained in a metal housing, is a skeleton of a three-way catalytic group, which includes an oral type, an integral ceramic type, and an integral metal type.
그 일례로써 촉매금속물질이 코팅된 세라믹으로 구성되는 삼원촉매변환장치의 담체는 진동이나 충격에 취약하여 금속용기인 하우징과 담체사이에 금속섬유등과 같은 탄성물질을 채워두기 때문에, 제조시 공정이 복잡할 뿐만 아니라 자체 무게가 증가하고 제조원가가 높은 측면이 있다. 또한, 세라믹 특성상 담체의 촉매활성온도까지 올리는 데 상대적으로 많은 시간을 요하게 되는 문제점이 있다.As an example, the carrier of the three-way catalytic conversion device composed of ceramic coated with catalytic metal material is vulnerable to vibration and impact, so that an elastic material such as metal fiber is filled between the housing and the carrier, which is a metal container, so that the manufacturing process is difficult. Not only is it complicated, but its weight is increased and manufacturing cost is high. In addition, there is a problem in that it takes a relatively long time to raise the catalytic activity temperature of the support on the basis of ceramic properties.
이러한 문제점을 감안하여 세라믹담체를 금속제담체로 대체함으로 취약한 문제점을 보완할 수 있고, 촉매활성온도까지 단시간내 도달할 수 있어 촉매효율을 증가시킬 수 있는 잇점이 있다. 따라서, 종래의 금속제담체를 제조하는 방법에 있어, 담체를 구성하는 평면호일과 주름호일에다 팔라듐, 로듐, 백금등을 코팅내지는 도금하여, 상기 평면호일과 주름호일을 상호 겹치도록 나선형으로 감아 담체를 조립한 다음 분말형 블레이징 금속을 담체에 골구루 분산시켜서 열처리하여 블레이징하게 되었다.In view of these problems, it is possible to compensate for the weak problem by replacing the ceramic carrier with the metal carrier, and to increase the catalytic efficiency since the catalyst active temperature can be reached within a short time. Therefore, in the conventional method for manufacturing a metal carrier, coating or plating palladium, rhodium, platinum, etc. on the plane foil and the wrinkle foil constituting the carrier, and spirally wound the plane foil and the wrinkle foil so as to overlap the carrier. After granulation, the powdered blazing metal was blistered by heat treatment by dispersing it in a carrier.
또한, 미국특허 제5,971,255호(발명의 명칭 : 서포팅촉매용 금속제 하니컴보디를 생산하는 프로세스및 장치)에 게재되어 있는 바와 같이, 블레이징용 금속호일의 조각을 미리 설정한 블레이징 위치에 조립하게 되고, 이때 동시에 삽입하여 열처리하므로서 블레이징하는 방법이 소개되고 있다.Further, as disclosed in U.S. Patent No. 5,971,255 (name and process for producing a honeycomb body made of metal for supporting catalyst), pieces of the metal foil for blazing are assembled at a predetermined blazing position. At this time, a method of blazing by inserting and heat treating at the same time has been introduced.
상기와 같은 종래의 금속제담체를 제조하는 방법등은 조립된 금속제담체를The method of manufacturing a conventional metal carrier as described above is assembled to the metal carrier
고정하기 위하여 블레이징 공정이 추가해야 되고, 이를 전기가열식 삼원촉매변환장치에 적용할 경우에는 블레이징의 위치가 불균일하게 되어, 열전도및 전기 전도도가 다소 감소되고 있음으로 촉매효율이 감소하게 된다는 문제점이 발생되었다.In order to fix it, a blazing process must be added, and when it is applied to an electrically heated three-way catalytic converter, the position of the blazing becomes uneven, and thermal conductivity and electrical conductivity are somewhat reduced, thereby reducing the catalyst efficiency. Occurred.
본 발명은 상기와 같이 종래 금속제담체의 제조방법이 갖고 있는 문제점을 해소하기 위해 발명한 것으로, 촉매활성온도까지의 도달시간을 단축시키고 섭씨 900도 이상의 고온상태에서 삼원촉매반응이 일어나 유해배출가스를 촉매효율을 초기 시동때부터 증가시킬 수 있고, 또한 평면호일에 환원촉매금속을, 주름호일에 산화촉매금속을 각기 형성시켜 상호 겹치도록 나선형으로 감아 담체를 기계적으로 조립함으로 원통형 담체의 고온 촉매효율을 증가시킬 뿐만 아니라 도금 열화를 적게 하여 수명도 연장시킬 수 있는 삼원촉매변환장치의 금속촉매담체를 제공함에 그 목적이 있다.The present invention has been invented to solve the problems of the conventional method for producing a metal carrier as described above, to shorten the time to reach the catalyst activation temperature and to generate a three-way catalytic reaction at a high temperature of more than 900 degrees Celsius The catalyst efficiency can be increased from the initial start-up, and the reduction catalyst metal is formed on the planar foil and the oxidation catalyst metal is formed on the corrugated foil, respectively. It is an object of the present invention to provide a metal catalyst carrier of a three-way catalytic converter that can increase not only increase but also reduce plating degradation.
또한, 본 발명의 금속촉매담체는 산화면적이 환원면적보다 더 넓도록 환원촉매금속이 도금된 평면호일에 상하 돌기를 일정한 간격으로 형성시키는 한편 산화촉매금속이 도금된 주름호일의 돌출부위에 홈을 형성시켜 이들을 기계적으로 조립할 때 이들 요철이 상호접촉하여 결합함으로 전기및 열전도가 향상됨과 더불어 블레이징 공정없이 담체가 원통형으로 고정될 수 있는 금속촉매담체를 제공할 수도 있다.In addition, the metal catalyst carrier of the present invention forms upper and lower projections at regular intervals on the planar foil plated with the reduction catalyst metal so that the oxidation area is larger than the reduction area, while forming grooves in the protruding portion of the wrinkled foil plated with the oxide catalyst metal. In order to mechanically assemble them, these concavities and convexities can be provided in contact with each other to improve the electrical and thermal conductivity, and to provide a metal catalyst carrier in which the carrier can be fixed in a cylindrical shape without a blazing process.
도 1 및 도 2 는 본 발명의 실시예에 관한 삼원촉매변환장치의 금속촉매담체에서 사용되는 평면호일및 주름호일의 단면도,1 and 2 are cross-sectional views of planar foils and corrugated foils used in the metal catalyst carrier of the three-way catalytic converter according to the embodiment of the present invention;
도 3 은 본 발명의 삼원촉매변환장치에서 금속촉매담체의 평면호일을 도시해 놓은 도면,3 is a view showing a plane foil of a metal catalyst carrier in the three-way catalytic converter of the present invention;
도 4 는 본 발명의 삼원촉매변환장치에서 금속촉매담체의 주름호일을 도시해 놓은 도면,Figure 4 is a view showing a wrinkle foil of the metal catalyst carrier in the three-way catalytic conversion device of the present invention,
도 5 는 도 3 의 평면호일과 도 4 의 주름호일을 결합한 금속촉매담체가 기계적으로 조립되는 과정을 도시해 놓은 도면,5 is a view illustrating a process of mechanically assembling a metal catalyst carrier combining the planar foil of FIG. 3 and the corrugated foil of FIG.
도 6 은 본 발명의 삼원촉매변환장치의 금속촉매담체를 완성시키기 위한 원통형 담체의 도면이다.6 is a view of a cylindrical carrier for completing the metal catalyst carrier of the three-way catalytic converter of the present invention.
♠ 도면의 주요부분에 대한 부호의 설명 ♠♠ Explanation of symbols on the main parts of the drawing ♠
1 : 평면호일 2 : 니켈도금층1: plane foil 2: nickel plated layer
3 : 로듐도금층 4 : 주름호일3: rhodium plated layer 4: wrinkle foil
6 : 백금도금층 7 : 돌기6: platinum plating layer 7: protrusion
8 : 상하 돌출부위 9 : 홈8: upper and lower protrusions 9: groove
상기 목적을 달성하기 위한 본 발명은, 평면호일과 주름호일이 상호 겹치도록 나선형으로 감아 담체를 조립함에 있어서, 상기 평면호일은 양면으로 표면처리하는 니켈도금층을 형성시켜 그 위에다 환원촉매금속으로 로듐도금층이 각기 형성되고, 이런 양면을 따라 일정한 간격으로 볼록한 돌기가 기계적으로 형성시키게 되고; 상기 주름호일은 양면으로 표면처리하는 니켈도금층을 형성시켜 그 위에다 산화촉매금속으로 백금도금층이 각각 형성되고, 상기 평면호일의 돌기와 대응되게 돌출부위에 각 홈이 기계적으로 형성시키게 되며; 상기 평면호일과 주름호일이 자동 기계적으로 동시에 조립될 때 이들 요철이 상호 접촉하여 원통형 담체로 고정된 것을 그 특징으로 한다.The present invention for achieving the above object, in assembling the carrier by spirally wound so that the plane foil and the wrinkle foil overlap each other, the plane foil is formed on the both sides of the nickel plating layer to the surface treatment to form a rhodium plating layer on the reduction catalyst metal thereon Each is formed, and convex protrusions are formed mechanically at regular intervals along these two sides; The corrugated foil is formed on both sides of the nickel plating layer to be surface-treated, and a platinum plating layer is formed on each of the metal oxide catalyst, and each groove is mechanically formed on the protruding portion corresponding to the projection of the plane foil; When the flat foil and the corrugated foil are automatically and mechanically assembled at the same time, they are characterized in that these unevennesses are fixed to the cylindrical carrier by mutual contact.
이하, 본 발명의 실시예를 예시도면에 의거하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1 및 도 2 는 본 발명의 실시예에 관한 삼원촉매변환장치의 금속촉매담체에서 사용되는 평면호일및 주름호일의 단면도로서, 본 발명의 금속촉매담체를 구성하는 알루미늄 평면호일(1)과 주름호일(4)는 상호 겹치도록 나선형으로 감아 원통형 담체를 기계적으로 조립하도록 되어 있는 바, 이들 호일(1, 4)은 도금층을 형성시키는 전단계 과정으로 제 2인산소다처리와 제 2인산 암모니아처리를 거쳐 염화 암모니아처리를 행한다. 이후 금속호일과 도금금속간의 결합력을 높히기 위하여 상기 평면호일(1)과 주름호일(4)양면에 표면처리를 위해 약 0.1 마이크로미터의 두께로 니켈도금층(2)을 각각 형성시킨다.1 and 2 are cross-sectional views of a planar foil and a pleated foil used in the metal catalyst carrier of the three-way catalytic converter according to the embodiment of the present invention, wherein the aluminum flat foil 1 constituting the metal catalyst carrier of the present invention is corrugated. The foils 4 are spirally wound to overlap each other so as to mechanically assemble the cylindrical carriers. These foils 1 and 4 are subjected to a second soda phosphate treatment and a second ammonia phosphate treatment as a preliminary step of forming a plating layer. Ammonia chloride treatment is performed. Then, in order to increase the bonding force between the metal foil and the plated metal, nickel plated layers 2 each having a thickness of about 0.1 micrometer are formed on both sides of the plane foil 1 and the wrinkle foil 4 for surface treatment.
도 1 에 도시된 평면호일(1)은 양면으로 표면처리하는 니켈도금층(2)을 형성시켜 그 위에다 환원촉매금속으로 로듐도금층(3)이 각기 약 0.2 마이크로미터의 두께로 형성되어 있고, 이런 양면을 따라 일정한 간격으로 볼록한 돌기(7)가 기계적으로 도 3 에 도시된 바와 같이 형성되어 있다. 따라서, 상기 평면호일(3)은 금속호일을 매개로 상하로 니켈도금층과 환원촉매금속층을 각각 적층시킨 상태에서 도시되지 않는 2개의 롤러사이로 들어가서 눌려져 배출됨으로 일정한 간격의 돌기가 형성되어지고 있다.The planar foil 1 shown in Fig. 1 forms a nickel plated layer 2 which is surface treated on both sides, and a rhodium plated layer 3 is formed on the reduction catalyst metal to a thickness of about 0.2 micrometers, respectively. The convex protrusions 7 at regular intervals are mechanically formed as shown in FIG. 3. Therefore, the planar foil 3 enters into two rollers (not shown) in the state where the nickel plating layer and the reducing catalyst metal layer are stacked up and down via metal foil, respectively, and is pressed and discharged to form protrusions at regular intervals.
도 2 에 도시된 주름호일(4)은 양면으로 표면처리하는 니켈도금층(2)을 형성시켜 그 위에다 산화촉매금속으로 팔라듐도금층 또는 백금도금층(6)이 각각 형성되어 있다. 상기 팔라듐도금층은 약 0.2 마이크로미터의 두께로 도금을 행하고, 상기 백금도금층(6)은 약 0.2 마이크로미터의 두께로 표면을 마무리 도금처리한다. 상기 주름호일(4)는 별도의 기계장치를 통해 나선형으로 되도록, 도 4 에 도시된 바와 같이 상기 평면호일(1)의 돌기(7)와 대응되게 일정한 각도의 돌출부위(8)에 각 홈(9)이 형성되어지고 있다.The wrinkled foil 4 shown in Fig. 2 forms a nickel plated layer 2 which is surface treated on both sides, and a palladium plated layer or a platinum plated layer 6 is formed thereon as an oxide catalyst metal. The palladium plated layer is plated to a thickness of about 0.2 micrometers, and the platinum plated layer 6 finish plated to a surface of about 0.2 micrometers. The corrugated foil 4 is helical through a separate mechanism, each groove (not shown) in the projection 8 of a constant angle corresponding to the projection 7 of the planar foil 1 as shown in FIG. 9) is being formed.
따라서, 주름호일(4)는 금속호일을 매개로 상하로 니켈도금층, 산화촉매금속층인 팔라듐도금층 또는 백금도금층(6)을 적층시킨 상태에서 기계적으로 일정하게 배열되는 돌출부위(8)의 홈(9)이 형성되어져 있다. 그러므로, 상기한 바와 같이 평면호일(1)과 주름호일(4)이 자동 기계적으로 동시에 조립될 때 이들 요철(7, 9)이 상호 접촉하여 고정됨으로 종래와 달리 블레이징 공정이 필요없게 된다.Accordingly, the corrugated foil 4 is a groove 9 of the protruding portion 8 that is mechanically uniformly arranged in a state in which a nickel plated layer, a palladium plated layer, or a platinum plated layer 6, which is an oxide catalyst metal layer, is stacked up and down through a metal foil. ) Is formed. Therefore, as described above, when the flat foil 1 and the corrugated foil 4 are automatically mechanically assembled at the same time, these unevennesses 7 and 9 are fixed in contact with each other, so that a blazing process is not required unlike in the prior art.
따라서, 본 발명은 환원촉매금속의 평면호일(1)보다 더 넓은 산화촉매금속의 주름호일(4)을 기계적으로 결합하여 만들어진 원통형 담체가 엔진의 매니폴드앞에 설치됨에 따라 종래와 달리 시동 초기때부터 차량의 배기가스를 정화시킬 수 있는장점이 있다. 또한 본 발명 삼원촉매변환장치의 금속촉매담체는 섭씨 900도이상의 고온상태에서 삼원촉매반응이 일어나도록 기계적으로 결합된 상기 평면호일(1)과 상기 주름호일(4)의 원통형 담체내에서 각기 배열 적층된 환원도금층과 산화도금층으로부터 산화/환원작용시켜 급가속및 급제동에도 유해 배출가스의 저감효율을 증진시킬 수 있다.Therefore, according to the present invention, since the cylindrical carrier made by mechanically coupling the pleated foil 4 of the oxide catalyst metal wider than the planar foil 1 of the reducing catalyst metal is installed in front of the manifold of the engine, unlike the prior art, There is an advantage to purify the exhaust gas of the vehicle. In addition, the metal catalyst carrier of the three-way catalytic conversion device of the present invention is laminated in the cylindrical carrier of the planar foil (1) and the corrugated foil (4) mechanically coupled to the three-way catalyst reaction at a high temperature of more than 900 degrees Celsius Oxidation / reduction from the reduced plating layer and the oxidized plating layer can enhance the reduction efficiency of harmful emissions even under rapid acceleration and braking.
본 발명은 환원촉매금속의 평면호일(1)과 산화촉매금속의 주름호일(4)에 대한 재질을 알루미늄 또는 알루미늄합금으로하여 설명했지만, 경우에 따라서는 얇은스텐레스 재질을 사용할 수도 있다.In the present invention, the materials for the planar foil 1 of the reducing catalyst metal and the corrugated foil 4 of the oxide catalyst metal have been described as aluminum or aluminum alloy. However, in some cases, a thin stainless steel material may be used.
도 5 는 도 3 의 평면호일과 도 4 의 주름호일을 결합한 금속촉매담체로 기계적으로 조립되는 과정을 도시해 놓은 도면이고, 도 6 은 본 발명의 삼원촉매변환장치의 금속촉매담체를 완성시키기 위한 원통형 담체의 도면이다. 본 발명의 금속촉매담체는 캡슐형으로, 또는 삽입하는 내장형으로 적용하여 사용할 수 있다.FIG. 5 is a view illustrating a process of mechanically assembling the metal catalyst carrier combining the planar foil of FIG. 3 and the corrugated foil of FIG. 4, and FIG. 6 is a view illustrating the process of completing the metal catalyst carrier of the three-way catalytic converter of the present invention. A drawing of a cylindrical carrier. The metal catalyst carrier of the present invention can be used in a capsule form or in a built-in type to be inserted.
먼저, 본 발명의 자동 기계적인 조립과정은 도 6 에 도시된 바와 같이, 결합출발의 중심점인 회전축(11)에는 환원촉매금속으로써 일정한 길이의 평면호일(1')과 이 보다 더 긴 길이의 산화촉매금속으로써 주름호일(4')끝을 고정시킨 다음 나선형으로 감으면서 상기 평면호일(1')의 돌기(7)와 주름호일(4')의 홈(9)들이 상호 접촉하여 정확히 고정되는 과정을 보여주고 있다.First, the automatic mechanical assembly process of the present invention, as shown in Figure 6, the rotation axis 11, which is the center point of the coupling start as a reduction catalyst metal of a constant length of the plane foil (1 ') and longer length oxidation Process of fixing the end of the corrugated foil 4 'with the catalytic metal and then winding it spirally so that the projections 7 of the planar foil 1' and the grooves 9 of the corrugated foil 4 'are fixed in contact with each other. Is showing.
상기 회전축(11)은 삼원촉매변환장치의 금속촉매담체에 적용할 경우에는 전극으로 역할을 하도록 되어 있다. 이후 일련의 과정을 통한 일정한 직경의 원통형으로 완성된 금속촉매담체를 하우징인 금속용기에 압축 삽입하는 과정을 통해 종래와 달리 블레이징 공정이 생략되어진 금속촉매담체로 제조되고 있다. 이 금속촉매담체의 외부로는 유리섬유가 일정한 두께로 덮어지고, 외부온도및 열손실을 방지하고 충격등을 막아주는 외부케이싱이 설치되어져 있다.The rotary shaft 11 serves as an electrode when applied to the metal catalyst carrier of the three-way catalytic converter. Thereafter, through a process of compressing and inserting the metal catalyst carrier having a cylindrical shape having a constant diameter through a series of processes into a metal container which is a housing, it is manufactured as a metal catalyst carrier, which has been omitted from the blazing process unlike the conventional art. The outer surface of the metal catalyst carrier is covered with a glass fiber with a certain thickness, and an outer casing is provided to prevent external temperature and heat loss and to prevent impacts.
본 발명에서의 환원촉매금속으로 평면호일(1')의 돌기(7)와 산화촉매금속으로 주름호일(4')의 홈(9)들이 기계적으로 상호 접촉하여 고정되는 과정은 도 5 에 도시된 바와 같이 돌기(7)의 높이와 돌출부위(8)의 홈(9)간의 거리를 충분히 고려하여 화살표(10)의 방향으로 상호 접촉위치를 정확히 맞춰 놓음으로 접촉자리의 벗어남을 최대한 줄일 수 있도록 되어 있다.In the present invention, the process of fixing the projections 7 of the planar foil 1 'with the reducing catalyst metal and the grooves 9 of the corrugated foil 4' with the oxidation catalyst metal are mechanically fixed to each other is shown in FIG. As shown in the drawing, the distance between the height of the projection 7 and the groove 9 of the protruding portion 8 is sufficiently taken into account so that the contact position is precisely aligned in the direction of the arrow 10 so that the deviation of the contact position can be minimized. have.
따라서, 본 발명은 원통형으로 완성된 금속촉매담체는 환원촉매금속으로 평면호일(1')의 돌기(7)와 산화촉매금속으로 주름호일(4')의 홈(9)들이 기계적으로 여러 층이 적층되고 있는 바, 이렇게 적층된 평면호일(1')과 주름호일(4')의 산화/환원관계를 살펴보면 환원촉매의 작용부위가 1/3 이고 산원촉매의 작용부위가 2/3 로 이루어지고 있다.Accordingly, the present invention is a cylindrical cylindrical metal catalyst carrier is a reduction catalyst metal of the projection (7 ') of the flat foil (1') and the groove (9) of the corrugated foil (4 ') of the oxidation catalyst metal mechanically several layers As a result, the oxidation / reduction relationship between the laminated foil (1 ') and the corrugated foil (4') is 1/3, and the action site of the acid source catalyst is 2/3. have.
즉, 본 발명은 도 5 에 도시된 바와 같이 평면호일(1')과 주름호일(4')이 상호 고정되어 하우징에 내장 설치된 금속촉매담체로써, 환원촉매금속의 평면호일(1')과 산화촉매금속의 주름호일(4'), 도시되지 않는 하우징이 상호 접촉되고 있음으로, 종래와 달리 전기및 열전도를 향상시켜 상기 하우징이 금속촉매담체의 구성부분인 금속호일, 즉 알루미늄 또는 스텐레스자체가 소성되지 않아 초기시동, 급제동 또는 급가속된다해도 가열에 의해 금속촉매담체의 온도가 단시간내에 촉매활성온도까지 도달하여 촉매효율을 증대시킬 수 있다.That is, the present invention is a metal catalyst carrier installed in a housing in which the flat foil 1 'and the corrugated foil 4' are fixed to each other as shown in FIG. 5, and the flat foil 1 'of the reduction catalyst metal is oxidized. Since the corrugated foil 4 'of the catalyst metal and the housing (not shown) are in contact with each other, the electrical and thermal conductivity is improved, unlike the conventional method, so that the housing is a metal foil, ie, aluminum or stainless steel, which is a component of the metal catalyst carrier. In this case, even when the initial startup, rapid braking or rapid acceleration occurs, the temperature of the metal catalyst carrier reaches the catalytic activity temperature within a short time by heating, thereby increasing the catalyst efficiency.
그러므로, 본 발명의 금속촉매담체를 구성하고 있는 평면호일과 주름호일에는 고온에서 삼원촉매기능을 발휘하도록 하기 위하여 상기 평면호일에는 환원촉매금속의 로듐이 도금층을 형성되어 있고, 상기 주름호일에는 더 넓은 산원촉매금속의 팔라듐 또는 백금이 도금층을 형성되어 있음으로, 섭씨 800도 이상에서 상호 소결반응을 행하는 백금 또는 팔라듐의 직접적인 접촉면적이 작아, 이 두 금속간의 소결반응을 최소화시켜 섭씨 900도 이상의 고온에서도 삼원촉매기능을 발휘할 수 있을 뿐만 아니라 촉매변환장치의 수명을 연장시킬 수 있다.Therefore, the planar foil and the pleated foil constituting the metal catalyst carrier of the present invention are formed with a plated layer of rhodium of a reducing catalyst metal in the planar foil so as to exhibit a three-way catalytic function at a high temperature. Since palladium or platinum of the acid source catalyst metal forms a plating layer, the direct contact area of platinum or palladium which mutually sinters at 800 degrees Celsius or more is small, thereby minimizing the sintering reaction between the two metals, even at a high temperature of 900 degrees Celsius or higher. Not only can it play a three-way catalyst function, but can also extend the life of the catalytic converter.
이상 설명한 바와 같이 본 발명은, 차량의 배기가스정화에 이용되는 삼원촉매변환장치의 금속촉매담체를 구성하고 있는 도 3 의 평면호일과 도 4 의 주름호일에 각 요철을 형성시켜서 별도의 블레이징 공정없이도 금속촉매담체를 완성시켜 사용할 수 있도록 되어 있다. 이렇게 완성된 금속촉매담체의 삼원촉매변환장치인 경우에는 이들 호일이 산화/환원작용으로 상호 접촉하게 되므로, 전기및 열전도도가 향상되어 단시간내에 촉매활성온도까지 도달되어도 촉매효율을 증가시키고 있다.As described above, the present invention provides a separate blazing process by forming irregularities in the flat foil of FIG. 3 and the corrugated foil of FIG. 4 constituting the metal catalyst carrier of the three-way catalytic converter used for exhaust gas purification of a vehicle. It can be used to complete the metal catalyst carrier without. In the case of the three-way catalytic conversion device of the metal catalyst carrier thus completed, these foils are in contact with each other by the oxidation / reduction action, thereby improving the electrical and thermal conductivity and increasing the catalyst efficiency even when the catalyst activation temperature is reached within a short time.
특히, 고온에서 삼원촉매기능을 발휘하도록 환원촉매금속으로 평면호일과 산화촉매금속으로 주름호일에 구분되어 로듐과 백금(또는 팔라듐)이 도금층으로 섭씨 800도 이상에서 상호 반응하는 백금(또는 팔라듐)의 소결반응을 최소화할 수 있음으로 섭씨 900도 이상의 온도에서도 삼원촉매기능을 발휘할 수 있다.Particularly, the platinum (or palladium) of rhodium and platinum (or palladium) reacts with each other at a temperature of 800 degrees Celsius or more as a plating layer, which is divided into a planar foil as a reduction catalyst metal and an oxidizing catalyst metal to exert a three-way catalytic function at a high temperature. Since the sintering reaction can be minimized, the three-way catalyst function can be exhibited even at a temperature higher than 900 degrees Celsius.
이상 설명한 바와 같이 본 발명은, 촉매활성온도까지의 도달시간을 단축시키고 섭씨 900도 이상의 고온상태에서 삼원촉매반응이 일어나 유해배출가스를 촉매효율을 초기 시동때부터 증가시킬 수 있고, 또한 평면호일에 환원촉매금속을, 주름호일에 산화촉매금속을 각기 형성시켜 상호 겹치도록 나선형으로 감아 원통형 담체를 기계적으로 조립함으로 금속촉매담체의 고온 촉매효율을 증가시킬 뿐만 아니라 도금 열화를 적게 하여 수명도 연장시킬 수 있는 삼원촉매변환장치의 금속촉매담체를 제공할 수 있다.As described above, the present invention can shorten the time to reach the catalyst activation temperature and cause a three-way catalyst reaction at a high temperature of 900 degrees Celsius or more, thereby increasing the catalytic efficiency from the initial start-up, and Reduction catalyst metals are formed spirally to overlap with each other by forming oxide catalyst metals on the corrugated foil, and mechanical assembly of the cylindrical carrier not only increases the high-temperature catalytic efficiency of the metal catalyst carrier, but also decreases the plating deterioration and extends the life. The metal catalyst carrier of the three-way catalytic converter can be provided.
본 발명의 삼원촉매변환장치의 금속촉매담체에 대한 기술사상을 예시도면에 의거하여 설명했지만, 이는 본 발명의 가장 양호한 실시예를 예시적으로 설명한 것이지 본 발명을 한정하는 것은 아니다. 본 발명은 이 기술분야의 통상 지식을 가진 자라면 누구나 본 발명의 기술사상의 범주를 이탈하지 않는 범위내에서 다양한 변형및 모방이 가능함은 명백한 사실이다.Although the technical idea of the metal catalyst carrier of the three-way catalytic conversion device of the present invention has been described with reference to the drawings, this is by way of example and not by way of limitation. It will be apparent to those skilled in the art that various modifications and imitations can be made without departing from the scope of the technical idea of the present invention.
또한, 본 발명의 금속촉매담체는 종래와 달리 도금층의 열화없이 계속적으로 지속되고 있음으로 수년사이에 교체가능하도록 되어 있다.In addition, the metal catalyst carrier of the present invention is continuously replaceable without deterioration of the plating layer, unlike the prior art, so that it can be replaced over the years.
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| KR100853533B1 (en) * | 2007-02-02 | 2008-08-21 | (주)모두액세스 | Metalic Monolith Substrate |
| KR101480654B1 (en) * | 2013-12-24 | 2015-01-13 | 연세대학교 산학협력단 | Multiple-pipe type reactor for capturing of carbon dioxide |
| KR101509389B1 (en) * | 2014-01-28 | 2015-04-08 | 연세대학교 산학협력단 | Stack of plate type reactor for capturing of carbon dioxide |
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| JPS59209646A (en) * | 1983-05-12 | 1984-11-28 | Nippon Shokubai Kagaku Kogyo Co Ltd | Honeycomb catalyst for purification of exhaust gas |
| JPS6178439A (en) * | 1984-09-26 | 1986-04-22 | Kiyataraa Kogyo Kk | Catalyst for purifying exhaust gas |
| JPH06254403A (en) * | 1993-02-26 | 1994-09-13 | Babcock Hitachi Kk | Exhaust gas purification device |
| US6245307B1 (en) * | 1994-06-17 | 2001-06-12 | Ict Co., Ltd. | Catalyst for purifying exhaust gas from lean burn engine and method for purification |
| JPH08177473A (en) * | 1994-12-22 | 1996-07-09 | Nippon Soken Inc | Exhaust emission control device |
| JP3769803B2 (en) * | 1995-02-24 | 2006-04-26 | マツダ株式会社 | Exhaust gas purification catalyst |
| JP3350283B2 (en) * | 1995-04-05 | 2002-11-25 | 新日本製鐵株式会社 | Method for manufacturing honeycomb body |
| US5688740A (en) * | 1996-04-30 | 1997-11-18 | Ard Co., Pte. Ltd. | Three-way catalyst for treating exhaust gases |
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| KR100853533B1 (en) * | 2007-02-02 | 2008-08-21 | (주)모두액세스 | Metalic Monolith Substrate |
| KR101480654B1 (en) * | 2013-12-24 | 2015-01-13 | 연세대학교 산학협력단 | Multiple-pipe type reactor for capturing of carbon dioxide |
| KR101509389B1 (en) * | 2014-01-28 | 2015-04-08 | 연세대학교 산학협력단 | Stack of plate type reactor for capturing of carbon dioxide |
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