Automobile tail gas purifier and coating process of honeycomb carrier

Abstract

The invention relates to an automobile exhaust gas purifier. It comprises a filter box (1), the filter box (1) includes a main pipe (2) located at the upper part and two branched branch pipes (5) at the lower part, and an exhaust thin pipe (5) is arranged in the branch pipe (5). 4) and the ceramic honeycomb carrier (3), the coating process of the honeycomb carrier includes step 1, batching; step 2, taking slurry; step 3, coating; step 4, firing. The invention is a coating process for an automobile exhaust gas purifier and a honeycomb carrier, which utilizes two-stage filtration of an exhaust thin pipe and a ceramic honeycomb carrier to react the exhaust gas into CO2 and H2O, and the micropores on the next wall can filter the soot particles in the exhaust gas. , and the soot particles will be burned off under the action of the catalyst coating; after the main pipe is branched to the branch pipe, the filtering area is increased in a limited space; the coating process not only coats evenly, but also coats the slurry. The material can be fully combined with the ceramic carrier, so that the filtration effect of the ceramic carrier is good.

Description

technical field [0001] The invention relates to a coating process of an automobile tail gas purifier and a honeycomb carrier, 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 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 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 Because the filter cannot guarantee a good filtering area in a limited space, the purification of the exhaust gas is not complete, and the environment will be polluted after being discharged. [0003] The existing honeycomb carrier coating process is to spra...

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 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 fact that the filter cannot guarantee a good filter area in a limited space, the purification of the exhaust gas is not complete, and the environment will be polluted after being discharged.

[0003] The existing honeycomb carrier coating process is to spray the slurry upward on the bottom of the ceramic carrier. The defect of this process is that the slurry is watery, which is not only difficult to coat, but also the coating slurry cannot be fully combined with the carrier. , the coated ceramic carrier is not beautiful, and the filtering effect is poor

Images