Ethylene glycol purification by melt crystallization:Removal of 2-methoxyethanol impurity

Tiefeng Wang; Jinxiang Dong

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Ethylene glycol purification by melt crystallization:Removal of 2-methoxyethanol impurity

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The coal(syngas)-to-ethylene glycol(CTEG),is contaminated with the naughty impurity 2-Methoxyethanol(ME)generated during the hydrogenation stage,which affect the quality of EG for fiber-grade polyester production.Distillation,is the employed separation process in industrial,which makes production complicated because of the heat sensitivity of the impurities system.Melt crystallization has been regarded as an effective technology to obtain high-purity organic compounds based on the melting points difference,which could avoid the problems by heating.In this work,we have explored the feasibility of the static melt crystallization on the separation of EG/ME in a jacketed crystallization tube.The experimental parameters were investigated,which covers crystallization and sweating stage in each step.The results showed that the purity of EG could reach≥99.8%from the binary system studied via the quaternary separation process.

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《中国化学工程学报：英文版》 |2021年第9期|39-45|共7页
作者
Tiefeng Wang; Jinxiang Dong;
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作者单位

College of Chemistry and Chemical Engineering;

Taiyuan University of Technology;

Taiyuan 030024;

China;

School of Chemical Engineering and Light Industry;

Guangdong University of Technology;

Guangzhou 510006;

China;

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原文格式 PDF
正文语种 chi
中图分类物理化学（理论化学）、化学物理学;
关键词
Separation; Crystallization; Purification; Ethylene glycol; 2-Methoxyethanol;

Ethylene glycol purification by melt crystallization:Removal of 2-methoxyethanol impurity

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