正交设计异丙醇-异戊醇-甲基环己烷分离工艺模拟

Simulation of the Separation process for Isopropanol-Isopentanol- Methyl-cyclohexane System by Orthogonal Design

基于异丙醇-异戊醇-甲基环己烷共沸体系特性分析,结合被处理料液实际工况,建立共沸物分离工艺流程。在保证分离要求条件下,以年总费用最低为原则,采用灵敏度分析对各塔进行单因素工艺参数优化。此基础上,运用正交设计对关键塔T0101工艺参数进一步优化。结果表明:在以异戊醇质量分数为试验控制指标下的最优工艺参数为理论板数为32块,进料位置为第10板,回流比为0.9,在此条件下,异戊醇质量分数为0.998 1,达到产品分离工艺要求。

Based on the characteristic analysis of Isopropanol-Isopentanol-Methyl-cyclohexane azeotrope system,the azeotrope separation process was established in combination with the actual working condition of the treated feed liquid.Under the condition of ensuring separation requirements,the main parameters of each tower were determined by single factor optimization using the sensitivity analysis based on the principle of minimum annual total cost.On this basis,the process parameters of T0101 were further optimized by using orthogonal design.The results show that the optimal process parameters under the experimental control index of isopentanol mass fraction are as follows:the number of theoretical stage is 32,the feed position is the 10th stage,and the reflux ratio is 0.9.Under these conditions,the isopentanol mass fraction is 0.998 1,which meet the requirements of product separation process.