Analyzing and Studying of Dynamic Mechanism Model of Ethylene Distillation Column for Simulation and Control

The dynamic mechanism model for ethylene distillation column is very complex and the model resolving is very time consuming. Simplifying the mechanism model for simulation and control is very important and necessary. An analyzing of phase equilibrium between ethane and ethylene has been done and some important results have been obtained. According to some existent problems in simulation and multivariable control process, linearized the origin model and reduced its order by using some mathematic and physical analytical methods, the simplification model has been obtained. The effectiveness and robustness of the improved model has been proved through analyzing and studying the results of simulation between origin model and improved model. The improved model can reflect the dynamic characteristics of practical object perfectly