Abstract: In view of the problem that the tower bottoms temperature in the morpholine distillation process is easily disturbed by pressure fluctuations, a study on a cascaded PID control scheme was conducted. The controlled object transfer function was obtained through system identification of on-site production data. A simulation model was constructed using Simulink to validate the feasibility of the cascaded PID control scheme. Subsequently, a cascaded control system for kettle temperature was designed based on the S7-300 PLC. This control scheme is characterized by simplicity, ease of debugging, and straightforward implementation within the PLC system. It holds significant potential for widespread application in view of its favorable attributes.
王大鹏, 徐兆莲, 曹玉波. 吗啉精馏过程塔釜温度串级控制系统应用研究[J]. 吉林化工学院学报, 2024, 41(1): 67-71.
WANG Dapeng, XU Zhaolian, CAO Yubo. Design of cascade control system for the temperature of the kettle of the morpholine distillation column. Journal of Jilin Institute of Chemical Technology, 2024, 41(1): 67-71.
