Three-way catalytic converter used for automobile tail gas treatment

Abstract

The invention discloses a three-way catalytic converter used for automobile tail gas treatment. The three-way catalytic converter comprises a housing, a gas inlet end and a gas exhaust end, wherein a gas inlet passage and a gas exhaust passage are arranged in the housing; the gas inlet passage communicates with the gas exhaust passage through a first reaction cavity, a second reaction cavity and a third reaction cavity which communicating with each other in sequence; a first reaction ball and a second reaction ball are placed in the first reaction cavity; each of the first reaction ball and the second reaction ball adopts a honeycomb ball body woven from stainless steel wires; and the surfaces of the stainless steel wires are coated with a catalytic reducing agent layer capable of performing catalytic purification on the automobile tail gas. According to the three-way catalytic converter used for automobile tail gas treatment, the catalytic reaction balls capable of rolling are arranged, so that the contact position of the reaction balls and the tail gas can be changed constantly during the actual use, the overall reaction ball bodies can be in full contact with the tail gas, and the problem that carbon accumulates at the front end of a catalytic carrier to cause blockage and the catalytic efficiency is reduced sharply due to that the conventional three-way catalytic converter is fixedly arranged is fundamentally solved.

Description

technical field [0001] The invention relates to the field of automobile exhaust gas purification devices, in particular to a three-way catalytic converter for automobile exhaust gas treatment. Background technique [0002] The three-way catalytic converter is the most important external purification device installed in the automobile exhaust system. It can convert harmful gases such as CO, HC and NOx emitted from automobile exhaust into harmless carbon dioxide, water and nitrogen. When the high-temperature automobile exhaust gas passes through the purification device, the purification agent in the three-way catalytic converter will enhance the activity of the three gases CO, HC and NOx, and promote them to undergo a certain oxidation-reduction chemical reaction, in which CO is oxidized at high temperature to become non-toxic. Color, non-toxic carbon dioxide gas; HC compounds are oxidized to water (H20) and carbon dioxide at high temperature; NOx is reduced to nitrogen and o...

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Problems solved by technology

[0007] Based on the practical defects of the three-way catalytic converter in the prior art introduced in the background technology, the purpose of the present invention is to provide a three-way catalytic converter for automobile exhaust treatment, which is intended to solve the problems described in the background technology With the increase of the use time of the existing three-way catalytic converter, when the catalytic carrier is not fully reacted and fully catalyzed, the catalytic efficiency is sharply reduced due to the blockage of the front-end carrier, and the entire catalytic carrier cannot be fully put into the catalytic reaction, resulting in the use of The problem of shortened life and reduced efficiency

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