Sakshi Agarwal
Independent Researcher
India
Abstract
This work presents the design and simulation of binary and multicomponent distillation columns using ASPEN Plus V8.6, focusing on separation efficiency, energy consumption, and operational parameters valid up to 2015 technologies. A rigorous thermodynamic model employing NRTL activity coefficient equations and Peng–Robinson equation of state was developed. The simulation study explores tray count optimization, reflux ratio effects, and feed stage location for ideal and non-ideal mixtures (ethanol–water, benzene–toluene–p‐xylene). Statistical analysis via ANOVA assessed the influence of design variables on key performance indicators. Five research objectives guided the study: to determine optimal reflux ratio, minimize reboiler duty, locate feed stage, maximize separation efficiency, and evaluate tray hydraulics. A case study on a 20-tray column demonstrates that a reflux ratio of 1.5 yields >95 wt% purity with 12 % energy savings. The methodology and results align with standard engineering practice as of 2015.
Keywords
Distillation simulation, ASPEN Plus, reflux ratio, tray count, separation efficiency
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