基于西门子PCS7的搅拌反应釜连续反应控制系统

Design and Realize CSTR Control System Based on Siemens PCS7

针对搅拌反应釜连续反应过程,采用多功能过程和实验系统(MPCE)中的连续搅拌反应过程(CSTR)进行控制系统设计。进料流量采用比值控制,液位采用串级控制,升温过程采用预测模糊控制,恒温阶段采用模糊免疫PID控制,并设计了压力安全联锁控制系统。基于西门子PCS7产品进行工程实现,运行结果表明:控制系统中各种控制策略操作简单,控制效果、安全性和可行性较好。

For the reaction process in the continuous stirred tank reactor,the continuous stirred tank reactor（CSTR） in multifunction process and experiment system is utilized to design the control system.The ratio control is adopted for flow,and the cascade control is utilized for level.Besides,the process of rising temperature is controlled via fuzzy predictive method,and the stage of constant temperature is controlled by using fuzzy immunity PID mehtod.Moroever,safety interlock control for pressure is also designed.The above project is implemented by means of SIMATIC PCS7,which attain better control performance,security,and feasibility.