With the development of social and economic globalization, the global awareness of environmental protection has gradually increased. As an important energy production unit, thermal power plants emit nitrogen oxides (NOx), which pose a serious threat to the environment and human health. Selective catalytic reduction, as an efficient denitrification technology, has been widely used in thermal power plants.
The SCR denitrification system independently developed by Green Valley Environmental Protection has independent intellectual property rights and a number of invention patents, and has accumulated a lot of experience in the application field, ensuring that the project design is reasonable, stable operation, ultra-low emission of nitrogen oxides and ammonia escape are less than 3ppm requirements.
Selective catalytic reduction is a chemical process in which NOx in flue gas is reduced to nitrogen N₂ and water under the action of a catalyst. In this process, ammonia (NH₃) is used as a reducing agent and reacts with NOx under certain stability and the action of catalyst:
NO+4NH₃+O₂→4N₂+6H₂O
2NO₂+4NH₃+O₂→3N₂+6H₂O
SCR denitrification system in the field of ultra-low emission of nitrogen oxides to achieve compact structure design, intelligent, accurate injection, alarm forecasting, data acquisition management, remote control, online transmission and other functions, to achieve ultra-low emissions while ensuring ammonia escape less than 3ppm.
Key components of SCR denitration system:
1. Ammonia injection system
2, mixer;
3. Reactor;
4. Catalyst;
5, flue gas reheating system;
Maintenance of SCR denitration system:
1. Catalyst management: the activity of the catalyst needs to be checked regularly and replaced or regenerated as needed;
2, injection system maintenance: regularly clean or replace the nozzle to ensure uniform injection of ammonia;
3. Flue gas monitoring: real-time monitoring of NOx concentration and ammonia escape rate in flue gas, timely adjustment of operating parameters;
4, equipment inspection: regular maintenance and inspection of the equipment in the SCR denitration system, including reactors, pipelines, valves, etc.
SCR denitrification system of thermal power plant is an important link to ensure the emission standards. While careful operation management and regular maintenance, it ensures the long-term stable operation of SCR denitrification system, effectively reduces Nox emissions, and contributes to the realization of clean energy production. With the continuous progress of technology and the improvement of environmental protection requirements, SCR denitrification technology will continue to optimize in order to adapt to more stringent environmental standards.
Post time: Sep-25-2024