Research of Optimal Control of Desulfurization pH Value in Power Plant Based on DMC
The pH value of the absorption tower slurry is crucial for the desulfurization efficiency of the flue gas desulfurization control system.A control method based on dynamic matrix control(DMC)algorithm is designed to accurately track and control the pH value of the slurry in the wet flue gas desulfurization(WFGD)process,addressing the nonlinearity and significant lag of the slurry pH value variation.The simulation results show that compared with traditional PID control algorithms,The DMC algorithm has stronger tracking ability and higher control accuracy in setting input and fluctuation changes of slurry pH value.This method can further meet the real-time control requirements of the system.In addition,The DMC algorithm can also effectively suppress random interference in the WFGD process,enhance the stability and anti-interference ability of the system.
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