环丁砜芳烃抽提蒸馏的计算机模拟

根据文献报道的环丁砜-芳烃抽提体系相平衡数据，采用UNIFAC-Dortmund基团贡献模型拟合了CH2-SULF、ACH-SULF、ACCH2-SULF三对基团的交互作用参数；在此基础上运用流程模拟软件Aspen Plus对其工艺过程进行模拟研究分析。模拟计算结果表明各塔工艺操作参数与工业实际操作值基本吻合，抽余油中芳烃的质量分数为0.13%，苯产品收率达到99.95%，甲苯产品收率达到99.76%，芳烃纯度为99.89%，达到了工艺要求。

Computer simulation of a process for extractive distillation of sulfolane aromatics

Based on the phase equilibrium data sets of extraction systems for sulfolane aromatics reported in the literature,binary parameters for three pairs of groups(CH2-SULF,ACH-SULF and ACCH2-SULF) were found to regress well using the UNIFAC-Dortmund model.The process was subsequently simulated by Aspen Plus.The results of the simulation were well consistent with the industrial operating parameters.The content of aromatics in the raffinate was 0.13%,the recovery ratio of benzene was 99.95%,the toluene recovery ratio was 99.76%,and the purity of aromatics was 99.89%.