水-乙酸甲酯-四氢呋喃三元共沸物系热集成萃取精馏工艺.

In view of the characteristics of the water-methyl acetate-tetrahydrofuran ternary azeotropic system, a heat integrated extractive distillation process was proposed to study its separation. The WILSON thermodynamic model was selected to calculate the vapor-liquid equilibrium data of the system, and the two-phase flash module in ASPEN PLUS software was used to simulate the relative volatility between the azeotropic components for the system under different extractant conditions. The results showed that ethylene glycol was more suitable as the extractant for the system, and the best solvent ratio was 0.37. On this basis, taking energy consumption and annual total cost (CAT) as technical and economic evaluation indicators, the conventional three-column extractive distillation process was simulated and the parameters were optimized, and the heat exchange network of the distillation system was optimized by using pinch point analysis technology. Based on the optimized results of the heat exchange network, the conventional three-column extractive distillation process was integrated with heat. The research results showed that compared with the conventional three-column extractive distillation process, the heat integrated extractive distillation process can reduce energy consumption by about 34.70%,save CAT about 21.98%,and increase thermodynamic efficiency by 36.34%.Therefore, the heat integrated extractive distillation process is a more suitable energy-saving process route for separating the ternary azeotrope system. [ABSTRACT FROM AUTHOR]