Application of ozone decomposition catalysts in coal-fired power plants

In the global energy structure, coal still occupies an important position, especially in the field of power generation, where coal-fired power plants provide a large amount of electricity to society. However, coal-fired power plants produce many pollutants during operation, posing a serious threat to the environment and human health.

At present, coal-fired power plants emit a wide variety of pollutants, including sulfur dioxide, nitrogen oxides, particulate matter, and ozone. Among them, although ozone can protect the earth from ultraviolet damage in the stratosphere, high concentrations of ozone near the ground are a harmful pollutant. Precursors such as nitrogen oxides emitted by coal-fired power plants will generate ozone under sunlight through a series of complex photochemical reactions, causing ozone concentrations in the surrounding areas to exceed the standard and form ozone pollution. This pollution not only irritates the human respiratory tract, causing diseases such as coughing and asthma, but also damages plant growth, affecting crop yields and the balance of the ecosystem.

In simple terms, a catalyst is a substance that can change the rate of a chemical reaction without changing its own mass and chemical properties before and after the reaction. In many chemical reactions, catalysts play a vital role. They can reduce the activation energy of the reaction, make the reaction easier, and thus improve the reaction efficiency.

In coal-fired power plants, copper-manganese composite ozone decomposition catalysts have significant advantages. From the perspective of catalytic activity, the synergistic effect of copper and manganese makes the catalyst have extremely high decomposition activity for ozone. Copper can provide specific active sites to promote the adsorption and activation of ozone molecules, while manganese can accelerate the reaction process of ozone decomposition. The two cooperate with each other, greatly improving the catalyst's ability to decompose ozone, and can quickly and effectively decompose ozone into oxygen, reducing the ozone concentration in the exhaust gas emitted by power plants.

In terms of stability, copper-manganese composite catalysts perform well. Compared with single-component catalysts, their structure is more stable. In the complex working environment of coal-fired power plants, such as high temperature, high humidity, and the presence of multiple impurity gases, the copper-manganese composite system can maintain the stability of its crystal structure and active components, and is not prone to agglomeration, poisoning, etc., thereby ensuring long-term stable catalytic performance, reducing the frequency of catalyst replacement, and reducing operating costs.

Anti-poisoning ability is also a highlight of the catalyst. The tail gas of coal-fired power plants contains a variety of impurity gases such as sulfur dioxide and nitrogen oxides, which may poison the catalyst and reduce its activity. The copper-manganese composite catalyst has a strong anti-poisoning ability to these impurity gases, and can resist their erosion and coverage of active sites to a certain extent, maintain good catalytic activity, and ensure that ozone can still be efficiently decomposed in a complex gas environment.

In addition, the copper-manganese composite catalyst also has advantages in terms of economy. Copper and manganese are both elements with relatively abundant reserves in the earth's crust, and the cost of raw materials is relatively low. In addition, due to its good stability and long service life, the cost of frequent replacement of catalysts is reduced. On the whole, the use of copper-manganese composite ozone decomposition catalyst can ensure efficient control of ozone pollution while reducing the environmental protection investment cost of coal-fired power plants, achieving a win-win situation of environmental benefits and economic benefits.

In summary, the copper-manganese composite ozone decomposition catalyst has broad application prospects in the control of ozone pollution in coal-fired power plants due to its high activity, stability, anti-poisoning ability and economic advantages, and provides strong technical support for improving the quality of the surrounding environment of coal-fired power plants.