Research on Control Method of Wet Desulfurization System for Coal-fired Boiler

Abstract In wet flue gas desulfurization technology, the key factor affecting SO 2 absorption is control of slurry pH value in tower. However, most commonly used methods have some defects and cannot fully meet system requirements. On basis analysis for problems process, this paper discussed a strategy based on internal model algorithm. The simulation test showed that method had good dynamic performance, robustness anti-interference, which could realize relatively accurate system, achieve goal.