Analysis of control properties of intensified distillation sequences: Reactive and extractive cases

作者：Murrieta Duenas Rodolfo; Gutierrez Guerra Roberto; Gabriel Segovia Hernandez Juan; Hernandez Salvador

来源：Chemical Engineering Research and Design, 2011, 89(11A): 2215-2227.

DOI：10.1016/j.cherd.2011.02.021

• Process intensification
• Thermally coupling
• Pareto front
• Control properties
• Extractive distillation
• Reactive distillation

In this work, we obtain and compare the control properties of thermally coupled reactive distillation sequences and thermally coupled extractive distillation sequences with those of conventional reactive and extractive distillation configurations. All sequences have been designed using a multiobjective genetic algorithm with restrictions. The theoretical control properties of those schemes were obtained using the singular value decomposition technique in all frequency domain. In order to complete the control study, the distillation options were subjected to closed-loop dynamic simulations. The effects of total stages, reactive stages, and extractant/feed ratio on the energy consumption and control properties are obtained for the intensified distillation options. The results show that there are cases in which integrated reactive and extractive sequences do not only provide significant energy savings with respect to the conventional reactive and extractive arrangements, but also may offer dynamic advantages in high energy consumption conditions.

• 出版日期2011-11