双塔精馏回收环己醇工艺模拟与优化

发布时间：2018-12-14 05:02

【摘要】：针对双塔精馏回收环己醇工艺,采用Fenske-Underwood-Gilliland-Kirkbride方程和Rad Frac模块对双塔进行简捷设计和严格模拟,保证预分离塔条件不变,利用响应面优化法(RSM)对萃取精馏塔的设计参数进行实验设计,得到最终优化的操作条件:预分离塔板数N1=28,环己醇进料流量F=440 kg/h,操作压力P1=-0.007 5 MPa,回流比R1=6.5;萃取精馏塔塔板数N2=22,操作压力P2=96.401 k Pa,回流比R2=2.49,萃取剂水质量分数为0.36。在最佳操作条件下,塔顶环己醇质量分数为95.9%,环己醇回收率为84.2%,投资成本5.34×10~6元,运行成本为2.19×10~6元,为环己醇回收工艺提供模型和数据基础。
[Abstract]:In view of the double-column distillation process for recovering cyclohexanol, the Fenske-Underwood-Gilliland-Kirkbride equation and Rad Frac module are used to design and simulate the double-column, which ensures that the conditions of the pre-separation column are not changed. The design parameters of extraction distillation column were experimentally designed by response surface optimization method (RSM). The optimized operating conditions were obtained as follows: number of plates N _ (1) N _ (28), feed rate of cyclohexanol (F _ (40) kg/h, operating pressure (P _ (1) -0.007 5 MPa,. The reflux ratio is 6.5; The extraction column tray number N _ 2N _ (22), the operating pressure P _ (2) N _ (96.401) k Pa, reflux ratio R _ (2) N _ (2) 2.49, the water mass fraction of the extractant 0.36. Under the optimum operating conditions, the mass fraction of cyclohexanol at the top of the tower is 95.9, the recovery rate of cyclohexanol is 84.2, the investment cost is 5.34 脳 10 ~ (-6) yuan and the operating cost is 2.19 脳 10 ~ (-6) yuan, which provides a model and data basis for the recovery process of cyclohexanol.
【作者单位】：郑州大学化工与能源学院;
【基金】：国家自然科学基金青年基金项目(21506197);国家自然科学基金项目(21646011)
【分类号】：TQ028.31;TQ233.1

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