| 摘要 |
An after-treating apparatus of exhaust gas and a catalyst converter installed therein is disclosed. The after-treating apparatus of exhaust gas primarily removes the exhaust gas in a first filtering device and a second filtering device, and secondarily purifies within the catalyst converter. The first filtering device and the second filtering device are controlled by opening and closing a valve through a time control part. That is, when particulate of the exhaust gas is collected in the first filtering device, the second filtering device burns the collected particulate by means of an electric heater. Further, the catalytic converter is prepared by coating a honeycomb supported on a supporter of alumina (Al2O3) and chromic oxide (Cr2O3) with a composite consisting of platinum, nickel and a promoter metal, or serially combining a honeycomb (a) and a honeycomb (b) in the order of (a) + (b) or (b) + (a). The honeycomb (a) is supported on a supporter of alumina (Al2O3) and coated with a composite consisting of platinum and nickel and a promoter metal. The honeycomb (b) is supported on a supporter of chromic oxide (Cr2O3) and coated with a composite consisting of platinum, nickel, and a promoter metal. Only the catalytic converters prepared by the above-stated method are used for treating exhaust gas.
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