Automobile exhaust gas purifier with high emission standard

Abstract

The invention relates to an automobile exhaust gas purifier with high emission standard. The purifier comprises a filter box (1), the filter box (1) comprises a main pipe (2) in the upper part and a sub-pipe (5) with two branch pipes in the lower part, exhaust fine pipes (4) and ceramic honeycomb carriers (3) are arranged inside the sub-pipe (5), and a spray chamber (7) and a selective catalytic reduction converter (8) are arranged in an exhaust outlet of the filter box (1). According to the automobile exhaust gas purifier with high emission standard, two-level filtration is conducted through the exhaust pipe and the ceramic honeycomb carrier, the tail gas is transformed into CO2 and H2O after reaction, in the meantime micropores in a partition wall can effectively filter out soot particles in the exhaust gas, and the soot particles can be burnt off under the action of the catalyst coating, with a regenerative function. After the exhaust gas is distributed to the branched pipes from the main pipe, the filter area is enlarged in the limited space, oxynitride is removed in the selective catalytic reduction converter, and the discharged exhaust gas satisfies the national V standard.

Description

technical field [0001] The invention relates to an automobile tail gas purifier with high emission standard, which is used for purifying the automobile tail gas. It belongs to the technical field of automobile equipment. Background technique [0002] At present, ordinary automobile exhaust purifiers use catalysts to interact with NO, NO in automobile exhaust. 2 react with CO to form CO 2 and N 2 These two kinds of non-polluting gases, but the cars equipped with diesel engines, because the exhaust gas of diesel engines contains soot particles, the existing automobile exhaust purifiers cannot effectively filter the soot particles, which will cause environmental pollution; while the existing purification Due to the inability to ensure a good filter area in a limited space, the exhaust gas purification is not complete, and the environment will be polluted after discharge; with the gradual implementation of the National V standard, there are still a large number of nitrogen ox...

AI Technical Summary

Problems solved by technology

[0002] At present, ordinary automobile exhaust purifiers use catalysts to interact with NO, NO in automobile exhaust. 2 react with CO to form CO 2 and N 2 These two kinds of non-polluting gases, but the automobiles equipped with diesel engines, because the exhaust gas of diesel engines contains soot particles, the existing automobile exhaust purifiers cannot effectively filter the soot particles, which will cause environmental pollution; at the same time, the existing purification Due to the inability to ensure a good filter area in a limited space, the exhaust gas purification is not complete, and the environment will be polluted after discharge; with the gradual implementation of the National V standard, there are still a large number of nitrogen oxides in the above-mentioned exhaust gas, so The existing automobile exhaust filter device can no longer meet the requirements

Images