SNCR and SCR Flue Gas Denitrification Systems with Selective Non-Catalytic Reduction and Selective Catalytic Reduction for 850℃ ~ 1050℃ Temperature Window
Selective Non-Catalytic Reduction (SNCR) flue gas denitrification stands as the mainstream denitrification technology widely adopted for fluidized bed boilers, cement kilns, and waste incineration furnaces.
This process works by injecting ammonia water, urea, or other reducing agents into flue gas within the temperature window of 850℃ to 1050℃. Without any catalyst, amine-based reducing agents selectively react with nitrogen oxides (NOx) contained in flue gas and convert pollutants into harmless nitrogen (N₂) and water (H₂O).
4NH₃ + 4NO + O₂ → 4N₂ + 6H₂O
CO(NH₂)₂ → 2NH₂ + CONH₂ + NO → N₂ + H₂O
2NO + 2CO → N₂ + 2CO₂
4NH₃ + 5O₂ → 4NO + 6H₂O
SNCR denitrification technology boasts broad application scenarios, covering cement production, municipal waste incineration, glass furnaces, thermal power plants, cogeneration units, and central heating boilers.
The working principle of Selective Catalytic Reduction (SCR) denitrification: Under the action of dedicated catalysts, liquid ammonia serving as the reducing agent chemically reacts with nitrogen oxides in flue gas. Hazardous NOx is converted into eco-friendly nitrogen and water to realize thorough flue gas denitrification.
The term "selective" indicates that ammonia (NH₃) only participates in the reduction reaction with nitrogen oxides rather than reacting with oxygen present in flue gas.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.