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利用Aspen Plus软件对含有四氢呋喃、正丁醇、γ-丁内酯和水的工业废液的分离提纯工艺进行了确定和模拟。确定使用1,4-丁二醇作为萃取剂,采用四塔流程分离该工业废液,回收四氢呋喃和正丁醇。四氢呋喃的回收使用萃取精馏,溶剂比为0.9,回流比为5,所需塔板数为28块,废液和萃取剂分别从第16块板和第5块板以泡点进料;正丁醇的回收使用两塔共沸精馏,所需脱水塔塔板数为7块,回收塔塔板数为5块。在此操作参数下,模拟所得四氢呋喃回收率可达99.9%,质量分数为99.99%,正丁醇回收质量分数达到99.99%。通过实验结果与模拟结果的比较,验证了本工艺的可行性和模拟结果的可靠性。
Aspen Plus software was used to determine and simulate the separation and purification of industrial waste liquid containing tetrahydrofuran, n-butanol, γ-butyrolactone and water. It was determined that 1,4-butanediol was used as the extractant, and the industrial waste liquid was separated by a four-column process to recover tetrahydrofuran and n-butanol. The recovery of tetrahydrofuran using extractive distillation, the solvent ratio of 0.9, the reflux ratio of 5, the required number of trays 28, waste and extractant from the 16th and 5th panels were bubbled feed; Butanol recovery using two azeotropic distillation, the required number of dehydration tray 7, the number of recovery tray 5. Under these operating parameters, the recovery rate of tetrahydrofuran was 99.9%, the mass fraction was 99.99% and the mass fraction of n-butanol was 99.99%. By comparing the experimental results with the simulation results, the feasibility of the process and the reliability of the simulation results are verified.