Butanol/butyl acetate/methyl isobutyl ketone mixture forms two binary azeotropes at atmospheric pressure with a distillation boundary on the residue curve map. Conventionally, this mixture is separated by a process configuration including five distillation columns. Alternatively, this mixture can be separated by a modified process configuration including three distillation columns and two recycle streams, when an extra amount of MIBK is added into the system. However, this modified configuration increases both the capital and energy costs because of the recycled MIBK in the process. Thus, an alternative intensified process configuration is proposed in this study to separate this ternary system without adding any azeotropic agent. The effect of pressure on the azeotropic compositions is used to develop the proposed triple-column pressure swing distillation process. The economic evaluation shows that the proposed configuration reduces both the capital and energy costs significantly compared with the triple-column pressure swing distillation configuration given in the literature. In addition to the steady-state design, a plantwide control structure is developed and tested for robustness. The dynamic simulation results show that an effective base-level regulatory control is achieved with a control structure including composition controllers.

丁醇/乙酸丁酯/甲基异丁基酮混合物在大气压下形成两个二元共沸物，在残留曲线图上具有蒸馏边界。常规地，该混合物通过包括五个蒸馏塔的工艺配置来分离。或者，当向系统中添加额外的MIBK时，可以通过改进的工艺配置来分离此混合物，该工艺包括三个蒸馏塔和两个循环流。但是，由于该过程中回收了MIBK，因此这种修改后的配置会同时增加资金和能源成本。因此，在本研究中提出了另一种强化工艺配置，以在不添加任何共沸剂的情况下分离该三元体系。压力对共沸组合物的影响被用于开发提出的三塔变压蒸馏方法。经济评估表明，与文献中给出的三塔变压蒸馏装置相比，拟议的装置显着降低了投资和能源成本。除稳态设计外，还开发了全厂控制结构并进行了坚固性测试。动态仿真结果表明，采用包含成分控制器的控制结构，可以实现有效的基础级调节控制。除稳态设计外，还开发了全厂控制结构并进行了坚固性测试。动态仿真结果表明，采用包含成分控制器的控制结构，可以实现有效的基础级调节控制。除稳态设计外，还开发了全厂控制结构并进行了坚固性测试。动态仿真结果表明，采用包含成分控制器的控制结构，可以实现有效的基础级调节控制。