With the continuous progress of industrialization, the demand for energy is increasing day by day, and the pollutants emitted by power plants, as an important energy source, have a serious impact on the environment and human health. NOx (nitrogen oxides) is one of the main air pollutants, so reducing NOx emissions has become an important task for generator set exhaust control.
Denitrification technology refers to the technology that separates NOx from flue gas.
Generator set denitrification equipment is a mainstream denitrification technology, the principle of which is to inject a catalyst and a reducing agent into the flue gas, so that NOx is reduced into harmless nitrogen and water vapor by the reducing agent under the action of the catalyst. The advantages of this equipment are 90% denitrification efficiency, simple operation, no need for water treatment, etc., while having low energy consumption and operating costs.
Compared with the traditional denitrification technology, the denitrification equipment of the generator set has the following characteristics:
SCR denitrification technology is a highly efficient nitrogen oxide (NOx) abatement technology with the following advantages:
Effective emission reduction: SCR technology can reduce NOx generated during combustion by more than 90%, effectively improve air quality, and reduce the formation of air pollutants such as acid rain and photochemical smog.
Wide applicability: SCR technology is suitable for all kinds of combustion equipment, such as thermal power plants, steel plants, cement plants, oil refineries, etc. Different types of fuels and combustion methods can be denitrified using SCR technology, which is highly flexible.
Mature and reliable technology: SCR technology has been very mature after years of research and application. This technology has high denitrification efficiency and low ammonia escape rate, which can meet the requirements of the start-stop times of different types of units without affecting the operation of the generator.
Simple operation and easy operation: The operation of the SCR system is relatively simple, the connection is convenient, and the operation is relatively convenient. At the same time, the system has a high degree of automation, and the start-up, normal operation monitoring and accident handling of the system can be completed through automation or remote control.
Relatively low operating costs: The SCR system has uniform ammonia spraying, low resistance, and low ammonia consumption, resulting in relatively low operating costs. In addition, the system is corrosion-resistant, has a long service life, and can be suitable for low-temperature, medium-temperature and high-temperature denitrification.
Fourth, the application prospect and development trend.
With the continuous improvement of environmental awareness and the strengthening of restrictions on pollutant emissions, reducing NOx emissions has become an important task for generator set exhaust gas emission reduction. As a mainstream denitrification technology, generator set denitrification equipment has the advantages of no secondary pollution, flexibility, reliability and economy, and has been widely used in generator set exhaust gas treatment.