Synthesis of epichlorohydrin from 1,3-dichloropropanol using solid base

doi:10.1016/j.cjche.2016.08.019

›› 2017, Vol. 25 ›› Issue (3): 301-305.DOI: 10.1016/j.cjche.2016.08.019

• Catalysis, Kinetics and Reaction Engineering • 上一篇下一篇

Synthesis of epichlorohydrin from 1,3-dichloropropanol using solid base

Yangcheng Lu, Tianyang Li, Rui Wang, Guangsheng Luo

State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

收稿日期:2016-06-30 修回日期:2016-08-22 出版日期:2017-03-28 发布日期:2017-04-15
通讯作者: Yangcheng Lu
基金资助:
Supported by the National Natural Science Foundation of China (21176136, 21422603) and the National Science and Technology Support Program of China (2011BAC06B01).

Synthesis of epichlorohydrin from 1,3-dichloropropanol using solid base

Yangcheng Lu, Tianyang Li, Rui Wang, Guangsheng Luo

State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Received:2016-06-30 Revised:2016-08-22 Online:2017-03-28 Published:2017-04-15
Supported by:
Supported by the National Natural Science Foundation of China (21176136, 21422603) and the National Science and Technology Support Program of China (2011BAC06B01).

摘要/Abstract

摘要： In this work, the synthesis of epichlorohydrin (ECH) from 1,3-dichloropropanol (DCP) by using solid sodium hydroxide (NaOH) is carefully investigated. Inert organic solvent, 1-octanol, is introduced to ensure reaction intensity under control. The reaction performances with respect to apparent kinetics and selectivity are determined to explore optimized reaction conditions and confirm potentials for enhancing productivity in one batch. The dissolution and liquid phase reaction mechanism and instant reaction assumption are proposed and verified through process analysis. A process design towards free additional water is schematically figured out to manipulate solid NaOH, by-product, and unreacted starting materials to realize a nearly closed circuit. This process allows high selectivity over 97% and complete DCP conversion at 323.2 K within a reaction time less than 20 min. Other advantages include near-zero wastewater emission, economically possible NaOH regeneration fromNaCl, and robust operating condition window.

关键词: Clean processes, Reaction, Process design, Kinetics, Multiphase

Abstract: In this work, the synthesis of epichlorohydrin (ECH) from 1,3-dichloropropanol (DCP) by using solid sodium hydroxide (NaOH) is carefully investigated. Inert organic solvent, 1-octanol, is introduced to ensure reaction intensity under control. The reaction performances with respect to apparent kinetics and selectivity are determined to explore optimized reaction conditions and confirm potentials for enhancing productivity in one batch. The dissolution and liquid phase reaction mechanism and instant reaction assumption are proposed and verified through process analysis. A process design towards free additional water is schematically figured out to manipulate solid NaOH, by-product, and unreacted starting materials to realize a nearly closed circuit. This process allows high selectivity over 97% and complete DCP conversion at 323.2 K within a reaction time less than 20 min. Other advantages include near-zero wastewater emission, economically possible NaOH regeneration fromNaCl, and robust operating condition window.

Key words: Clean processes, Reaction, Process design, Kinetics, Multiphase

Yangcheng Lu, Tianyang Li, Rui Wang, Guangsheng Luo. Synthesis of epichlorohydrin from 1,3-dichloropropanol using solid base[J]. , 2017, 25(3): 301-305.

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Synthesis of epichlorohydrin from 1,3-dichloropropanol using solid base

Synthesis of epichlorohydrin from 1,3-dichloropropanol using solid base

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