Application and Effect Evaluation of AIG Optimization Adjustment Strategy for SCR Denitrification System After Ultra-low Emission Transformation of Coal-fired Units

In order to solve the typical problems that occurred after the ultra-low emission reform of coal-fired power plants, the AIG optimization strategy was used to study the denitration system of a 600MW unit. The research shows that the uniformity of NO_x concentration at the outlet of the denitrification reactor is significantly improved, and the relative standard deviation is reduced to less than 15%, which eliminates the local high concentration of ammonia slip. The deviation of NO_x monitoring data from the denitration reactor outlet and the desulfurization outlet was significantly improved. The AIG optimization adjustment strategy can be used as an effective means to mitigate and solve the typical problems of denitration systems after ultra-low emission retrofit. (paper)