电池级碳酸二甲酯提纯工艺进展  

Progress in the Purification Process of Battery-grade Dimethyl Carbonate

作　　者：李欢欢 周双 杨小俊[1,2] 杜治平 殷霞[1] 汪大闪 LI Huan-huan;ZHOU Shuang;YANG Xiao-jun;DU Zhi-ping;YIN Xia;WANG Da-shan(School of Chemical Engineering and Pharmacy,Wuhan Institute of Technology,Wuhan 430205,China;Wuhan Sunrise Environmental Protection Technology Co.,Ltd.,Wuhan 430022,China)

机构地区：[1]武汉工程大学化工与制药学院,湖北武汉430205 [2]武汉旭日华环保科技股份有限公司,湖北武汉430022

出　　处：《精细化工中间体》2025年第2期1-11,共11页Fine Chemical Intermediates

基　　金：武汉市重点研发计划(2023020402010622)。

摘　　要：碳酸二甲酯(DMC)具有相溶性好、黏度低、介电常数高等优点,可与碳酸二乙酯以体积比1∶1混合作为锂离子电池电解质。随着新能源汽车的发展,电池级DMC的需求量日益增加,因此开发出一条降本增效的电池级DMC提纯工艺十分关键。对比了DMC目前主流合成路线的优劣,分析了产品中可能性杂质的去除难易程度,对三种电池级DMC的提纯方法进行了工艺成本分析和能耗对比,最后对工业级DMC向电池级DMC的提纯工艺进行了总结与展望。Dimethyl carbonate(DMC)has the advantages of good compatibility,low viscosity and high dielectric constant,and can be mixed with diethyl carbonate 1:1 as a lithium-ion battery electrolyte.With the development of new energy vehicles,the demand for battery-grade DMC has been increasing,so it is very important to develop a battery-grade DMC purification process that reduces costs and increases efficiency.The advantages and disadvantages of the current mainstream synthesis routes of DMC are compared,and the removal of possible impurities in the product is analyzed,and then the process cost analysis and energy consumption comparison of the purification methods of three battery-grade DMCs are compared,and finally,the purification process from industrial-grade DMC to battery-grade DMC is summarized and prospected.

关 键 词：电池级碳酸二甲酯 分离 萃取精馏 熔融结晶 结晶-精馏耦合 

分 类 号：TQ225.5[化学工程—有机化工] TQ202