The feasibility of batch and continuous extractive distillation analysis for the separation azeotropic mixtures is addressed. Based on batch feasibility knowledge, batch and continuous separation feasibility is studied under reflux ratio and entrainer flow-rate for a working example ternary system acetone-chloroform-benzene, which belonging to the 1.0-2 class case (a). Possible feasible regions are determined by finding the feasible points based on continuous methodology, they show minimum and maximum feed ratio as a function of the reflux, and a lower bound for the reflux ratio. Later on, simulations verified the feasibility of calculating results based on theoretical methodology