针对传统变压精馏技术(PSD)在分离二氯甲烷(DCM)-甲醇(MeOH)混合物时的高能耗问题,提出了一种基于热泵辅助的变压精馏(PPSD)优化工艺,并深入探讨了热泵配置的技术可行性和经济效益。通过组合曲线和经济性分析,对比了热泵方案的节能和经济效果。结果显示,与传统PSD工艺相比,热泵辅助的PPSD工艺能够降低29.96%的能耗,减少40.45%的年度总成本(TAC),同时能降低44.23%的CO₂排放量,充分展现了热泵辅助变压精馏工艺的优越性。

A heat pump-assisted pressure swing distillation (PPSD) optimization process is proposed to address the high energy consumption issue in the traditional pressure swing distillation (PSD) technology in separating dichloromethane (DCM)-methanol (MeOH) mixtures,and the technological feasibility and economic benefits of the heat pump configuration are explored.The energy-saving and economic effects of the PPSD scheme are compared through combining curves and economic analysis.It is shown by the results that compared with traditional PSD process,PPSD process is able to reduce energy consumption by 29.96%,total annual cost (TAC) by 40.45%,as well as CO₂ emission by 44.23%,demonstrating the superiority fully.

杨祉聪(1998-),男,硕士生;史荣会(1982-),女,博士,副教授,研究方向为清洁化工生产及分离技术,通讯联系人,shironghui@fjut.edu.cn。