摘要
在工业级DMC溶剂础上,提出了单塔常压连续精馏分离DMC的工艺流程,同时采用Aspen Plus模拟软件的严格精馏模型和NRTL物性模块对该装置模拟与优化,获得了该装置最优的工艺技术参数与设备尺寸参数;相比较分子筛吸附工艺有提高产能、节约设备投资与能耗、产品质量稳定及不产生固废等优点。实际开车结果表明,采用该工艺流程,在脱除水分与甲醇的同时,切割了部分重组分,产品满足电池级DMC的质量要求,且回收率达93.8%以上。
The single-tower atmospheric continuous distillation is used for the purification of battery grade DMC in this study.RADFRAC model and NRTL equation of ASPEN PLUS software is applied to simulate and optimize the process.The optimum operating conditions and equipment parameters are determined.Compared with the molecular sieve absorption process,the atmospheric continuous distillation shows the higher production,lower equipment capital,lower energy consumption and lower solid waste production.This new process removes water,methanol and some heavier components.The battery grade DMC is produced with yield of 93.8％.
出处
《现代化工》
CAS
CSCD
北大核心
2014年第8期159-161,163,共4页
Modern Chemical Industry
