In this work, we present a study on the dehydration of methyl isobutyl ketone (MIBK) by batch distillation, using the dynamic module for batch distillation (BatchSep) provided by the commercial chemical process simulator Aspen Plus V11®. A 98 wt.% MIBK/water mixture was initially fed to the column. The scope of the separation was set at 99.8 wt.%, as a standard purity for solvent reuse. Taking advantage of the heteroazeotropic behaviour of the mixture water/MIBK (self-entrained), an alternative configuration with a decanter, which allowed selective reflux of the organic phase, was studied and compared with the conventional batch distillation configuration at 1 atm. This alternative configuration presented clear operating advantages compared to the conventional case, i.e. reduction of both operational time and energy demand by 50% and increase in specific production by 100%. Finally, the distillation-decanter configuration was studied at reduced pressures (50–400 mbar), registering further operating improvements.

在这项工作中，我们使用商业化学过程模拟器 Aspen Plus V11® 提供的间歇蒸馏动态模块 (BatchSep)，通过间歇蒸馏对甲基异丁基酮 (MIBK) 进行脱水研究。最初将 98 重量％的 MIBK/水混合物进料到塔中。分离范围设置为 99.8 wt.%，作为溶剂再利用的标准纯度。利用水/MIBK（自夹带）混合物的杂共沸行为，研究了一种带有倾析器的替代配置，允许有机相选择性回流，并与 1 个大气压下的常规间歇蒸馏配置进行比较。与传统情况相比，这种替代配置具有明显的操作优势，即 操作时间和能源需求减少 50%，单位产量增加 100%。最后，在减压 (50–400 mbar) 下研究了蒸馏-滗析器配置，记录了进一步的操作改进。