 This study examined the energy efficiency of an extractive distillation separation system for ethanol dehydration. It found that the most energy-intensive part of the process was heating and cooling, so it focused on optimizing these operations. A sensitivity analysis was conducted to determine how changes in various parameters affected the overall efficiency of the system. The results showed that increasing the number of stages increased the overall efficiency, while decreasing the reflux ratio had the opposite effect. Additionally, varying the asiatropic feed and solvent feed had little impact on the overall efficiency. Finally, the overall efficiency of the system was improved to 33.53% when all parameters were adjusted accordingly. This article was authored by Camilo Andres Guerrero-Martin, one Sebastian Fernandez Ramirez, Jamie Eduardo Arturo-Calvake and others.