Controllability analysis of alternate schemes to complex column arrangements with thermal coupling for the separation of ternary mixtures

Effects of intensification on process features and control properties of lignocellulosic bioethanol separation and dehydration systems

“…For the control-loops above, we used the default-process simulator PI parameters. Second, we chose a LV control structure based on energy balances to control the bioethanol mass purity [49].…”

Dividing wall columns in chemical process industry: A review on current activities

“…Many authors analysed the effect of minimising the energy requirements on the controllability properties of the system, because an optimal design might give the highest energy savings, but lack good controllability [20][21][22]. Rong and Turunen [23] reported a reliable synthesis method, whereas Gómez-Castro et al [24] proposed a robust method for the design of distillation sequences with dividing walls and recommended an analysis of both thermodynamic and controllability properties.…”

Review of Retrofitting Distillation Columns Using Thermally Coupled Distillation Sequences and Dividing Wall Columns to Improve Energy Efficiency

“…A top dividing wall column (TDWC) or bottom dividing wall column (BDWC) can be implemented by moving the dividing wall to the top or bottom of the column, respectively. The DWC can effectively reduce the energy requirement by up to 30%, while also lowering the engineering and hardware costs compared to those of conventional direct and indirect distillation sequences (Triantafyllou and Smith, 1992;Hernández and Jiménez, 1999;Segovia-Hernández et al, 2007;Sotudeh and Shahraki, 2008;Tamayo-Galván et al, 2008;Errico et al, 2009;van Diggelen et al, 2010;Long et al, 2010;Kiss and Bildea, 2011;Kiss and Rewagad, 2011). This improved energy efficiency arises because DWCs can allow reversible splits with no part of the separation performed twice (Poth et al, 2004).…”