Trapezoidal tail gas filter capable of effectively removing nitrogen oxides

Abstract

The invention relates to a trapezoidal tail gas filter capable of effectively removing nitrogen oxides. The trapezoidal tail gas filter comprises a filter box (1), wherein a filter screen (2) and a ceramic honeycomb carrier (3) are arranged in the filter box (1); and a spray chamber (7) and a selective catalytic reduction converter (8) are arranged at the tail gas outlet of the filter box (1). The trapezoidal tail gas filter capable of effectively removing nitrogen oxides has the benefits as follows: through the two-stage filtration of the filter screen and the ceramic honeycomb carrier, the tail gas containing the main components such as CO, HC and NOx is subjected to reaction to be converted into CO2, H2O, N2 and O2, black smoke particles in the exhaust gas are effectively filtered through micro holes in partition walls and further combusted under the action of catalyst coatings, nitrogen oxides are removed in the selective catalytic reduction converter, and the discharged tail gas meets the national V standard.

Description

technical field [0001] The invention relates to a trapezoidal tail gas filter for effectively removing nitrogen oxides, which is used for purifying automobile tail gas. It belongs to the technical field of automobile equipment. Background technique [0002] At present, ordinary automobile exhaust filters use catalysts to interact with NO and NO in automobile exhaust. 2 react with CO to form CO 2 and N 2 These two kinds of non-polluting gases, but cars equipped with diesel engines, because the exhaust gas of diesel engines contains black smoke particles, the existing exhaust filters cannot effectively filter black smoke particles, which will cause environmental pollution; with the national V standard Implemented step by step, because there are still a large amount of nitrogen oxides in the above-mentioned exhaust gas, so the existing automobile exhaust gas filtering device can no longer meet the requirements. Contents of the invention [0003] The object of the present ...

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Problems solved by technology

[0002] At present, ordinary automobile exhaust filters use catalysts to interact with NO and NO in automobile exhaust. 2 react with CO to form CO 2 and N 2 These two kinds of non-polluting gases, but cars equipped with diesel engines, because the exhaust gas of diesel engines contains black smoke particles, the existing exhaust filters cannot effectively filter black smoke particles, which will cause environmental pollution; with the national V standard Step by step implementation, due to the existence of a large amount of nitrogen oxides in the above-mentioned exhaust gas, the existing automobile exhaust filter device can no longer meet the requirements

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