Design And Control Of Ternary Heterogeneous Azeotropic Dividing Wall Column

With the increase of energy consumption and greenhouse gas emission,and the negative growth of fossil resources and the increase of,it has because a trend to improve the thermodynamic efficiency of distillation process.The existence of azeotropic phenomena increases the difficulty of distillation separation.Among them,there is a special class of ternary heterogeneous azeotropic mixtures,the optimization design and dynamic control of such complex distillation systems are of great importance.This paper mainly studied the design,optimization and dynamic control of heterogeneous azeotropic distillation process for the separation of the IPA/DIPE/Water system.According to the thermodynamic properties,the feasibility of separation sequence was analyzed to improve the ternary heterogeneous azeotropic distillation.In this study,a novel ternary heterogeneous azeotropic distillation was proposed and all parameters were globally optimized by genetic algorithm.Then,the ternary heterogeneous azeotropic distillation was combined with the dividing wall column technology to become a ternary heterogeneous azeotropic dividing wall column process.On this basis,the process of ternary heterogeneous azeotropic distillation is combined with the dividing wall column technology and the ternary heterogeneous azeotropic dividing wall column process is obtained through partial heat coupling.After that,thermal integration and heat pump technology are used to further decrease energy consumption.Meanwhile,this paper proposed the ternary heterogeneous azeotropic dividing wall column assisted thermal integration and vapor recompression.In order to investigate the control performance of the process,the dynamic control was studied for ternary heterogeneous azeotropic dividing wall column,and an effective control structure was proposed...