基于乙酸异丁酯和异丁醇物系共沸组成随压力变化显著的特点，可采用变压精馏技术分离乙酸异丁酯和异丁醇物系；为了降低变压精馏过程的能耗，应用自热回收理论设计了一种新型节能变压精馏工艺，并用换热网络技术对过程进行了热集成设计。同时对传统变压精馏工艺及新系统进行了能耗分析对比。结果表明，自回热系统的净能耗比原系统降低了58.30%，年度总费用节省了37.89%，二氧化碳排放量也大大降低。

Based on the fact that the azeotropic composition of isobutyl acetate and isobutyl alcohol mixture varies with changes of pressure,the pressure swing distillation (PSD) process is recommended to separate the isobutyl acetate-isobutyl alcohol mixture.In order to reduce the energy consumption of conventional PSD process,a novel energy saving SHR-PSD process is designed by applying the self-heat recuperation technology (SHRT) and the heat integration of the SHR-PSD process is designed via the heat exchanger network (HEN).The energy consumption of the SHR-PSD process is compared with that of conventional PSD process.The results reveal that the net energy consumption of the SHR-PSD process can be reduced by 58.30% compared with that of conventional PSD process,the SHR-PSD process can also save 37.89% of TAC compared with that of conventional PSD process.Moreover,the CO₂ emissions of the SHR-PSD process can be greatly reduced compared with the conventional PSD process.

夏慧(1992-),男,研究生