隔壁塔反应精馏合成异丙醇模拟及节能效益研究

Simulation and energy efficiency analysis of the synthesis of isopropanol by reactive dividing-wall-column

采用反应精馏隔壁塔技术,以甲醇钠为催化剂,通过乙酸异丙酯与甲醇酯交换反应合成异丙醇。利用Aspen Plus模拟软件对常规反应精馏工艺和反应精馏隔壁塔工艺分别进行模拟分析。结果表明:与常规反应精馏工艺相比,反应精馏隔壁塔不但可以得到纯度99.8%以上的异丙醇产品,而且异丙醇收率98.54%,节能20.4%。

Adopting reactive dividing-wall-cohann （RDWC）, isopropyl alcohol was synthesized through the transesterification of isopropyl acetate and methanol with sodium methoxide as catalyst. Both the conventional reactive distillation process and the RDWC process were simulated by using Aspen Plus. The results showed that compared with the conventional reactive distillation process, the RDWC process can get more than 99.8% purity of isopropyl, the yield ofisopropyl alcohol is 98.54%, and achieve an energy saving of 20.4%.