Waste gas purifier

Abstract

The invention discloses a waste gas purifier to purify particle and dust in the fuel engine, which is characterized by the following: the waste gas generates turbulent current separated by first grouped of waste gas filtering device, which flows in the second group of waste gas filtering device to dispose again through commutating channel, the waste gas is disposed repeatedly by ternary catalyst on the porous ceramic carrier grid board surface in the filtering device, which reduces carbonic oxide into carbon dioxide and water as well as oxynitrides into nitrogen with purifying rate over 90%.

Description

Technical field: [0001] The patent of the present invention relates to an exhaust gas purifier, in particular to an exhaust gas purifier in a fuel internal combustion engine exhaust emission treatment system. Background technique [0002] Due to the single structure and defects of the exhaust gas purification device in the exhaust gas emission treatment system at home and abroad, it is impossible to effectively separate and clean the fine dust particles contained in the exhaust gas emission of the internal combustion engine. The effect of the actual purification treatment. Most of its exhaust gas purification devices use a microporous ceramic carrier honeycomb shape, coated with a three-way catalyst coating to capture fine dust particles contained in the exhaust gas, and to treat hydrocarbons (HC) and carbon monoxide (CO) in the exhaust gas. ) is oxidized to carbon dioxide (CO 2 ) and moisture (H 2 O), the reduction of nitrogen oxides (NOx) to nitrogen (N 2 ) and oxygen ...

AI Technical Summary

Problems solved by technology

[0003] The patent of the present invention is to solve the single structure and defect of the gas filtration channel on the honeycomb shape of the microporous ceramic carrier in the above-mentioned exhaust gas purification device, which is a combination of a straight line and a T shape; The dust particles contained in the generated exhaust gas will block the gas filter channel, and at the same time, it will reduce and reduce the contact area and time of the three-way catalyst coating coated on the surface of the porous ceramic carrier with the exhaust gas, resulting in Due to the short service life of the exhaust gas purification device and other reasons, a method is proposed to prevent the fine dust particles contained in the exhaust gas from blocking the gas filtration channel of the microporous ceramic carrier, and to allow the coating to be attached to the microporous ceramic carrier. The three-way catalyst coating on the surface of the carrier achieves a longer time and effective area contact with the exhaust gas to perform an oxidation and reduction reaction; at the same time, the moisture generated by the oxidation reaction can be used to play a role in reducing the dust particles contained in the exhaust gas emission. The adsorption capacity can be used as an exhaust gas purifier in a fuel internal combustion engine exhaust emission treatment system that can stably separate fine dust particles, effectively purify and treat exhaust emissions, and have a long service life.

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