Operation Optimization of Flue Gas Desulfurization Equipment in Coal-Fired Units with Separate Grinding Co-firing Mode
This paper proposes a method for predicting the SO2 concentration at the desulfurization outlet in coal-fired units with separate grinding co-firing operation mode,and analyzes the optimized operation of desulfurization equipment in this mode.The method first determines the boundary conditions for the separate grinding co-firing;then it predicts the generator power of the unit under the co-firing mode and calculates the initial O2 concentration of the flue gas at the desulfurization tower inlet.Based on this,the SO2 concentration of the flue gas at the desul-furization tower inlet is accurately predicted.Finally,using a neural network method,the SO2 concentration of the flue gas at the desulfurization outlet is predicted,and the optimal operating mode of the desulfurization equip-ment is calculated to ensure the emission of SO2 concentration from the outlet gas within the regulatory limits.Compared with existing technologies,this method offers advantages such as strong operability and high prediction accuracy.
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