碳酸二甲酯-甲醇共沸体系的节能分离技术研究进展

张阳光; 王顺; 刘杨; 储金科; 石慧; 汤吉海; 崔咪芬; 乔旭; 夏铭

doi:10.11949/0438-1157.20251332

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碳酸二甲酯-甲醇共沸体系的节能分离技术研究进展

综述与专论 | 更新时间：2026-08-21

- 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
- 化工学报 2026年77卷第7期页码：3675-3690
- 作者机构：
  
  1.南京工业大学化工学院，材料化学工程全国重点实验室，江苏南京 211816
  2.南京工业大学化学与分子工程学院，江苏南京 211816
  3.国家“江苏先进生物与化学制造”协同创新中心，江苏南京 211816
- 作者简介：
  
  张阳光（2001—），男，硕士研究生，18317637815@163.com
  夏铭（1987—），男，博士，副研究员，Sciengart@163.com and mxia@njtech.edu.cn
- 基金信息：
  
  江苏省碳达峰碳中和科技创新专项资金项目(BT2025004);国家自然科学基金项目(22202225;22208361;22208154);南京工业大学新进人才启动项目(39801177);南京工业大学2025年校级教改课题(20250132);南京工业大学本科课程思政示范课程建设项目(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)
- DOI：10.11949/0438-1157.20251332
  中图分类号： TQ 028
- 收稿：2025-11-27，
  
  修回：2026-01-12，
  
  网络首发：2026-08-20，
  
  纸质出版：2026-07-25
- 稿件说明：
移动端阅览
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

ZHANG Yangguang, WANG Shun, LIU Yang, CHU Jinke, SHI Hui, TANG Jihai, CUI Mifen, QIAO Xu, XIA Ming. Research progress on energy-saving separation of dimethyl carbonate/methanol azeotropic mixture[J]. CIESC Journal, 2026, 77(7): 3675-3690
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 DOI： 10.11949/0438-1157.20251332.

ZHANG Yangguang, WANG Shun, LIU Yang, CHU Jinke, SHI Hui, TANG Jihai, CUI Mifen, QIAO Xu, XIA Ming. Research progress on energy-saving separation of dimethyl carbonate/methanol azeotropic mixture[J]. CIESC Journal, 2026, 77(7): 3675-3690 DOI： 10.11949/0438-1157.20251332.

摘要

碳酸二甲酯（DMC）是重要的绿色化工中间体和锂电池电解液溶剂，然而，在DMC生产过程中，DMC与甲醇（MeOH）往往形成共沸体系且存在夹点区域，导致分离难度大，能耗占比高，是制约DMC节能高效生产的关键瓶颈。不同合成工艺如酯交换法、氧化羰基化法、尿素醇解法和二氧化碳直接合成法等所产生的DMC/MeOH混合物组成存在差异，直接影响分离难度、能耗、节能策略及技术适配性，因此亟需开展针对不同进料特性的节能高效分离技术的调研与研究。为此，针对DMC/MeOH共沸体系的节能分离，系统综述了变压精馏、萃取精馏、非均相共沸精馏及膜分离四种技术的基本原理、工艺流程、关键参数、节能方向和应用特性，重点分析了基于不同进料组成的技术适配规律：较低浓度的DMC进料时，萃取精馏展现操作弹性与经济性优势；较高浓度（近共沸组成）的DMC进料时，热集成非均相共沸精馏与变压精馏更具竞争力，精馏-膜耦合技术为节能分离提供重要支撑。展望未来，开发传统精馏耦合低成本绿色材料（膜、离子液体等）的集成工艺，将成为推动DMC节能、低碳和高值化发展的重点研发方向。

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

Keywords

references

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