Process Analysis and Multi‐Objective Optimization of Ionic Liquid‐Containing Acetonitrile Process to Produce 1,3‐Butadiene

• DOI: 10.1002/ceat.201000426
• Publication Date: 2011-06-15T00:10:03Z
• Authors: X. Tian; X. Zhang; S. Zeng; Y. Xu; Y. Yao; Y. Chen; L. Huang; Y. Zhao; S. Zhang
• Keywords: Extractive distillation; Degree (music); UNIFAC

Abstract Using ionic liquid (IL) [C 2 MIM][PF 6 ] as an additive could remarkably improve the performance of acetonitrile (CAN) process, which is most widely used distillation process to produce 1,3‐butadiene (1,3‐BT). In this work, a rigorous simulation new IL 1,3‐BT was carried out evaluate on industrial scale, using UNIFAC global thermodynamic model. Based models, some key operation parameters, such solvent ratio and reflux ratio, were determined by sensitivity analysis. Furthermore, multi‐objective optimization proposed performed considering both energy consumption environmental impact (green degree) process. A nonlinear mathematical model established express problem, includes six decision variables involves maximizing green degree purity recovery 1,3‐BT, minimizing The results showed that IL‐containing be reduced 22 % its improved 9.2 %.