为分离得到高纯度正构烷烃单体，在6 kPa条件下设计交叉精馏工艺流程。采用Aspen Plus模拟软件对交叉精馏过程初设条件进行模拟，建立实验装置对模拟结果进行验证实验。分别考察交叉精馏过程中塔理论塔板数（N）、原料进料位置（N_f）、侧线出料位置（N_c）、侧线出料量（D_c）、塔顶馏出量（D）及回流比（R）对分离过程的影响，得到最佳操作参数及分离结果。通过实验验证，模拟值与实验值相对误差较小且均在误差允许范围内，说明分离方案可行且模拟结果较为准确，通过后续模拟得到最优操作参数及模拟结果。

In order to obtain the high-purity n-alkane monomer,a cross-distillation process is designed at a condition of 6 kPa.Aspen Plus simulation software is used to simulate the initial conditions of the cross-distillation process,and an experimental device is set up to verify the simulation results.The optimal operating parameters and separation results are obtained through studying the influences of the number of theoretical plates (N),raw material feed position (N_f),side line discharge position (N_c),side line discharge amount (D_c),overhead distillation volume (D) of each column and the reflux ratio (R) on the cross-distillation process.Through experimental verification,the relative error between the simulated value and the experimental value is very small and leaves within the allowable range,indicating that the separation scheme is feasible and the simulation results are accurate.

温国贤(1992-),男,硕士生。