• 迪宝催化剂

    迪宝催化剂

  • 迪宝催化剂

    迪宝催化剂

  • 迪宝

    迪宝

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Classification of Protective environmental protection catalyzer

Classification:
Protective environmental protection catalyzer
Release time:
2021/05/21 10:22
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1.Protective environmental protection catalyzer-combustion catalyst

A catalyst that converts combustible pollutants into carbon dioxide and water by means of complete catalytic oxidation. It is widely used in the treatment of factory exhaust pollution, mainly caused by carbon monoxide, hydrocarbons and their oxygen-containing derivatives, such as alcohols, aldehydes, ketones, and esters. In recent years, in catalytic combustion furnaces that handle atmospheric mass, honeycomb-shaped catalysts are mostly used. The latter is a columnar product with many parallel pores along the axis of the column, which resembles a honeycomb. This type of catalyst has much lower resistance to airflow than the spherical catalyst.

Protective environmental protection catalyzer

2.Protective environmental protection catalyzer- nitrogen oxide purification catalyst

A catalyst to eliminate nitrogen oxide pollution. Nitrogen oxides mainly come from the high-temperature combustion of coal, heavy oil, gasoline, etc.; some chemical plants, especially nitric acid plants, also emit exhaust gas containing nitrogen oxides. It can be treated by catalytic reduction method, that is, adding fuel gas to the exhaust gas, through the action of the catalyst, the nitrogen oxide undergoes a reduction reaction and is converted into nitrogen.
When nitrogen oxide and sulfur dioxide are present at the same time, carbon monoxide can be used as a reducing agent to make nitrogen oxide and sulfur dioxide become nitrogen and sulfur respectively under the action of a copper oxide-alumina catalyst. In addition to the catalytic reduction method, people are still exploring the use of decomposition catalysts to decompose nitrogen oxides into nitrogen and oxygen, and the use of oxidation catalysts to oxidize nitrogen oxides to nitrogen dioxide and remove them.

3.Protective environmental protection catalyzer-automobile exhaust catalyst

A catalyst installed in the exhaust port of a car to convert harmful substances into harmless substances. It is the variety with the largest output value in the Protective environmental protection catalyzer. Automobile exhaust contains residual fuel ─ ─ hydrocarbons, carbon monoxide, nitrogen oxides and lead compounds, sulfides, etc., Protective environmental protection catalyst purification methods can be divided into three types: ① One-stage purification method, in which only oxidation catalysts are used to remove carbon monoxide and Hydrocarbons. ②The two-stage purification method firstly uses a reduction catalyst to make nitrogen oxide react with carbon monoxide and hydrocarbons, and then reduce to nitrogen, and then pass the oxidation catalyst to completely oxidize the hydrocarbons and carbon monoxide, but part of the nitrogen oxide is reduced to ammonia during the reduction process. In the oxidation process, it is re-oxidized to nitrogen oxide, which reduces the purification rate of nitrogen oxide. ③The three-way catalytic purification method selects a catalyst that can remove hydrocarbons, carbon monoxide and nitrogen oxides under the same reaction conditions, and requires a narrow range of air to fuel ratio of 14.7±0.1 to make the three equal It is better eliminated, so the computer can be used on the car to control the air-fuel ratio during driving.

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