A control perspective on process intensification in dividing-wall columns

► Overview of available control strategies for dividing-wall columns. ► Degrees of freedom analysis for DWC. ► Three/four-point control structures. ► Linear model predictive control (MPC). ► Advanced control strategies (LQG, LSDP, H-infinity and mu-synthesis). ► LSV and DSV are the best PID control structures. ► MIMO controllers perform better than multi-loop PID controllers. ► DWC has good controllability when an appropriate control structure is selected.