Control System Simulation Of Distillation Column

The petroleum and chemical industry is an important pillar of the development of the national economy,and the distillation column is an important operating unit and equipment widely used in the separation and purification process of the petrochemical industry.Its production operation process is complex,with the characteristics of multiple variables and large delay,and each control loop has a relatively serious coupling relationship.The analysis and study of the dynamic relationship between the control loop and variables of the rectifying tower has an important reference value for the efficient and stable operation of the rectification production process.This topic with kingview as a platform to establish dynamic model rectification column,study mainly from the following aspects: first,the whole model is divided into the tower column,plate,column reactor,reboiler,condenser and so on several parts of its modeling respectively,according to the material balance and energy balance equations show block model,then the input and output of the block model is adjusted,make each part of the input/output interface corresponding to each other,the whole model rectification column is obtained.In addition,this paper USES Aspen Plus software commonly used in industry to compare and verify the distillation column simulation results.Finally,the column control circuit simulation analysis,based on the whole model of rectification tower,according to the commonly used control scheme in the rectification column,the column add PID controller,the control circuit of the open loop simulation on the single loop and open loop simulation of the overall system after integration,the result also shows that the rectification tower control system has good anti-interference ability,can guarantee the quality of the top products when disturbance,and can control the quality of the overhead product according to the production requirement.The control system model of distillation tower based on kingview can adjust the operation parameters in real time to make it more suitable for the actual operation.At the same time,the components and tools of KingView can be used to view the running state of the distillation column at any time,so as to better grasp the working characteristics of the distillation column,which has certain significance for the analysis and control of the distillation process.It can also be applied in enterprise training,university practice education and other fields.By learning the distillation column simulation system,enterprise employees and university students can have a more intuitive understanding of the actual production,and lay a solid foundation for their application and learning in future jobs.