基于Simulink的连续搅拌反应釜的建模与仿真

Modeling and Simulation of Continuous Stirred Tank Reactor(CSTR )Based on Simulink

作为化工过程中的重要设备,连续搅拌反应釜(CSTR)决定了化工产品的质量和生产能力。针对非线性的CSTR系统,基于Simulink平台采用模块组建和S-Function这2种方式创建其单输入单输出状态空间仿真模型。取系统的一个稳定工作点,在仿真时间的不同时段,利用动态矩阵控制(DMC)算法,通过改变冷却剂温度实现对系统出口物料温度的控制。利用该模型可模拟冷却剂温度对出口物料温度的影响。仿真曲线验证了该模型的正确性与可行性,可用于连续搅拌反应釜系统中实现动态仿真。

As an important equipment in chemical engineering,continuous stirred tank reactor（CSTR）determines the quality and production capacity of chemical products.The single input single and output state space simulation model of CSTR is established based on Simulink by using two ways of module structure and S-Function.A stable point of this system is presented and the output temperature is controlled based on the dynamic matrix control（DMC）algorithm by changing coolant temperature at different times during the simulation time.The simulation model is used to simulate the effect of coolant temperature on the output temperature.The simulation curves verifies that the simulation model used in the dynamic simulation of the continuous stirred tank reactor system is correct and feasible.