Packaging method for automobile three-way catalyst converter

Abstract

The invention relates to the field of manufacturing of automobile three-way catalyst converters, in particular to a packaging method for an automobile three-way catalyst converter. The method includes the following steps that a purifying agent layer is formed on a honeycomb-shaped carrier; the carrier with the purifying agent layer is calcinated for 1 hour to 2 hours at the temperature ranging from 400 DEG C to 600 DEG C and then cooled in the environment with the temperature ranging from 0 DEG C to 4 DEG C; the carrier with the purifying agent layer is placed in a half of a catalyst converter shell, two halves of the structure of the catalyst converter shell are combined, a certain distance is reserved between the carrier with the purifying agent layer and the inner wall of the catalyst converter shell, and a locating board is pressed downwards, so that the inner wall and the outer wall of the catalyst converter shell are compressed, and the carrier with the purifying agent layer is attached to the inner wall of the catalyst converter shell. By the adoption of the method, the carrier with the purifying agent layer can be conveniently installed and detached, and the stressed deformation of the carrier with the purifying agent layer is reduced; and a purifying agent of specific components is adopted and smeared layer by layer, so that the catalysis effect is improved.

Description

technical field [0001] The invention relates to the field of preparation of an automobile three-way catalytic converter, in particular to a packaging method for an automobile three-way catalytic converter. Background technique [0002] Automobile three-way catalytic converter is the most important external purification device installed in automobile exhaust system. It can convert harmful gases such as carbon monoxide, nitrogen oxides and hydrocarbons discharged from automobile exhaust into harmless carbon dioxide, nitrogen oxides and other harmful gases through oxidation and reduction. water and nitrogen. Because this catalytic converter can simultaneously convert the three main harmful substances in the exhaust gas into harmless substances, it is called a three-way catalytic converter. [0003] In the preparation process of automobile three-way catalyst, it needs to be encapsulated in the catalyst shell, but the carrier needs to be coated with different active components a...

AI Technical Summary

Problems solved by technology

[0003] During the preparation process of the automotive three-way catalytic converter, it needs to be packaged in the catalytic converter shell, but the carrier needs to be coated with different active ingredients first to realize the formation of the purifying agent layer, and the purifying agent carrier needs to be firmly encapsulated in the catalytic converter shell. In the prior art, the purifier carrier is often firmly packaged in the catalyst housing, and it is troublesome to disassemble the purifier carrier