化工学报2026，Vol.77Issue(7)：3675-3690,封2,17.DOI:10.11949/0438-1157.20251332
碳酸二甲酯-甲醇共沸体系的节能分离技术研究进展
Research progress on energy-saving separation of dimethyl carbonate/methanol azeotropic mixture
摘要
Abstract
Dimethyl carbonate(DMC),as a crucial green chemical intermediate and solvent for lithium battery electrolytes,in production,DMC and methanol(MeOH)often form an azeotrope with pinch regions,making separation difficult and energy-intensive.The DMC/MeOH composition varies with synthesis routes,including transesterification,oxidation carbonylation,urea alcoholysis,and direct CO₂ synthesis,directly influences separation complexity,energy demand,and technology applicability.Therefore,research and investigation of energy-efficient separation technologies tailored to different feed characteristics are urgently needed.To address this,this systematic review examines the mechanisms,key parameters,and application characteristics of four mainstream separation technologies for DMC/MeOH azeotropic systems:pressure swing distillation,azeotropic distillation,extraction distillation,and membrane separation.It focuses on analyzing the adaptability patterns of these technologies based on different feed compositions.For a low concentration of DMC feeding,extractive distillation demonstrates operational flexibility and economic advantages.For the high-concentration DMC feedstocks(near the azeotropic composition),heterogeneous azeotropic distillation and pressure swing distillation become more competitive.Membrane coupling technology provides crucial support for energy-saving separation.It also prospects that the research and development focus will be on the integrated process of coupling distillation with low-cost green membrane materials and other separation media to promote the production of energy-saving and low-carbon DMC.关键词
碳酸二甲酯/共沸物/分离/精馏/膜Key words
dimethyl carbonate/azeotrope/separation/distillation/membrane分类
化学化工引用本文复制引用
张阳光,王顺,刘杨,储金科,石慧,汤吉海,崔咪芬,乔旭,夏铭..碳酸二甲酯-甲醇共沸体系的节能分离技术研究进展[J].化工学报,2026,77(7):3675-3690,封2,17.基金项目
江苏省碳达峰碳中和科技创新专项资金项目(BT2025004) （BT2025004）
国家自然科学基金项目(22202225,22208361,22208154) （22202225,22208361,22208154）
南京工业大学新进人才启动项目(39801177) （39801177）
南京工业大学2025年校级教改课题(20250132) （20250132）
南京工业大学本科课程思政示范课程建设项目(20240030) （20240030）
南京工业大学化学与分子工程学院教育教学改革拔尖创新人才项目(2024YB02) （2024YB02）
