共沸精馏分离富含丁烯醛废液体系的Aspen模拟与优化

Simulation and optimization of the azeotropic distillation of separating wastewater containing crotonaldehyde

设计了一种用于处理富含丁烯醛废液体系的新工艺,并应用Aspen Plus软件对该工艺的理论塔板数、回流比、采出率、进料位置等工艺参数进行灵敏度优化与正交试验分析。最终优化后的模拟结果为:脱轻塔的塔板数N_1=31,塔釜采出率B_1/F_1=0.867 5,塔顶油层回流比R_1=23.50,进料位置N_(F,1)=10,进料温度T_(F,1)=60℃;脱重塔的塔板数N_2=40,回流比R_2=4.0,塔顶采出率D_2/F_2=0.942,进料位置N_(F,2)=15。经济效益分析的结果表明本工艺具有良好的经济与环境效益。

The azeotropic distillation of separating wastewater containing crotonaldehyde has been simulated and optimized using Aspen Plus. The stage number,reflux ratio,bottoms to feed ratio and feed position have been explored by means of sensitivity analysis. The optimized process parameters of the first column are as follows： stage number 31,bottoms to feed ratio 0. 867 5,reflux ratio of oil phase 23. 50,feed stage number 10 and temperature 60 ℃; The optimized second tower design parameters are as follows： stage number 40,reflux ratio 4. 0,distillate to feed ratio 0. 942 and feed stage number 15. Economic analysis showed that the optimized process affords good economic and environmental benefits.