Tail gas purifier

Abstract

The invention relates to a tail gas purifier comprising a filter tank (1); a filter screen (2), a ceramic honeycomb carrier (3) and a low-temperature catalysis region are sequentially arranged inside the filter tank (1) along an air flow direction; the left end of the filter tank (1) is provided with an air supply device (8); a drain hole (9) is formed in the right end of the filter tank (1); and the front end of the filter tank (1) is provided with a spray head (11). According to the tail gas purifier disclosed by the invention, firstly, acidic components in tail gases are eliminated by virtue of sodium carbonate mists, then, the tail gases taking CO, HC and NOx as main components react to generate CO2,H2O, N2 and O2 under three-stage filtration of the filter screen, the ceramic honeycomb carrier and the low-temperature catalysis region, and meanwhile, soot particles in exhaust gases can be effectively filtered through micropores in a partition wall and can be combusted under the action of a catalyst coating, so that the ceramic honeycomb carrier has a regeneration function and can be used for further filtering and purifying the soot particles.

Description

technical field [0001] The invention relates to an exhaust gas purifier, which is used for purifying the exhaust gas of automobiles. 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 produce 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 soot particles, the existing exhaust gas purifiers cannot effectively filter the soot particles, which will cause environmental pollution; while the existing purifiers The catalytic efficiency is low, and the exhaust gas purification is not complete; the further elimination of the acidic components of the existing exhaust gas is a new demand for exhaust gas treatment and urban environmental protection. Contents of the invention [0003] The object of the present invention is ...

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 produce 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 soot particles, the existing exhaust gas purifiers cannot effectively filter the soot particles, which will cause environmental pollution; while the existing purifiers The catalytic efficiency is low, and the exhaust gas purification is not complete; the further elimination of the acidic components of the existing exhaust gas is a new demand for exhaust gas treatment and urban environmental protection.

Images