Selective Catalytic Reduction (SCR) flue gas denitrification technology refers to the process of injecting about 5% ammonia gas into flue gas containing nitrogen oxides and at an appropriate temperature under normal pressure, mixing it evenly, and passing it through a reactor equipped with a catalyst for NO removal_xSelective reduction reaction with NH3 to generate harmless N_{? And H?O。}

Our company uses the world leading large-scale universal computational fluid dynamics CFD software ELUNT to simulate SCR reactors, connecting flues, and internal components in the digestion and absorption of SCR flue gas denitrification technology. We obtain the velocity field, temperature field, pressure field, and concentration field of SCR reactors under different connection methods between flues and reactors, the number and arrangement of diversion devices and flue gas mixing devices, and the number and arrangement of ammonia injection nozzles. Optimize the design of the above arrangement to achieve the most uniform flow rate, temperature, and concentration of the mixture of flue gas and ammonia entering the catalyst bed, thereby reducing ammonia escape and improving denitrification efficiency.

Advantages: This method has high denitrification efficiency, relatively low price, and is widely used in domestic and foreign projects, becoming the mainstream technology for power plant flue gas denitrification.

Disadvantage: The fuel contains sulfur, which can generate a certain amount of SO3 during the combustion process. After adding the catalyst, under aerobic conditions, The generation of SO3 significantly increases and forms NH4HSO4 with excess NH3. NH4HSO4 is corrosive and viscous, which can cause damage to the tail flue equipment. Although the generation of SO3 is limited, its impact cannot be underestimated. In addition, the phenomenon of catalyst poisoning cannot be ignored.