Manufacturing method of tail gas treatment three-way catalytic converter for environmental protection

1. The present invention relates to the technical field of energy saving and environmental protection, in particular to a three-way catalytic converter for tail gas treatment for environmental protection.

Background technique:

2. The three-way catalytic converter is the most important external purification device installed in the exhaust system of a car. It can convert harmful gases such as co, hc and nox discharged from the car exhaust into harmless carbon dioxide through oxidation and reduction. Water and nitrogen. When high-temperature automobile exhaust passes through the purification device, the purification agent in the three-way catalyst will enhance the activity of the three gases CO, hc and nox, and promote certain redox chemical reactions. Among them, the CO becomes colorless at high temperature. , Non-toxic carbon dioxide gas, hc compound is oxidized to water and carbon dioxide at high temperature, and nox is reduced to nitrogen and oxygen. Three kinds of harmful gases become harmless gases, so that car exhaust can be purified.

3. When the three-way catalyst is working normally, the three-way catalyst needs a minimum of 250 degrees Celsius to react, so that when the car is exhausted normally, the initial gas cannot be catalyzed normally, which increases environmental pollution, and the three-way catalyst is in After a certain period of use, internal carbon deposits are likely to cause blockage, which reduces the area of the catalyst, which affects the normal exhaust of exhaust gas and the catalytic work of exhaust gas, and affects the conversion efficiency and working life of the three-way catalyst.

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