化学工程2025，Vol.53Issue(5)：36-41,6.DOI:10.3969/j.issn.1005-9954.2025.05.007
乙醇胺胺化合成乙二胺体系热力学计算
Thermodynamic calculation of ethanolamine amination for ethylenediamine synthesis
荆钰 1刘丹 1林子昕 1别海燕 1安维中1
作者信息
- 1. 中国海洋大学化学化工学院,山东青岛 266100
- 折叠
摘要
Abstract
In response to the issues of multiple side reactions,complex product composition,and lack of thermodynamic data for reactor selection and design in the synthesis of ethylenediamine through the reductive amination of ethanolamine and ammonia,the thermodynamic behavior of the reaction system was studied.The independent reactions of the ethanolamine amination reaction system for the synthesis of ethylenediamine were determined using the atomic matrix method,and the standard entropy and isobaric heat capacity of each component in the reaction system were estimated using the Benson group contribution method.The enthalpy change,Gibbs free energy change and chemical equilibrium constant of each reaction in the reaction system were calculated through thermodynamic calculations.The results show that the reaction system for the synthesis of ethylenediamine through the reductive amination of ethanolamine and ammonia consists of six independent reactions,with the main reaction for the production of ethylenediamine being an exothermic reaction,and the chemical equilibrium constant being relatively low.The chemical equilibrium constants of other reactions in the system are relatively high,and pyrazine is a relatively abundant by-product,which is thermodynamically unfavorable for the main reaction for the production of ethylenediamine.The model established and the obtained results provide a theoretical basis and model support for reactor selection and system optimization in the synthesis of ethylenediamine via the ethanolamine method.关键词
乙二胺/乙醇胺/原子矩阵法/Benson基团贡献法/热力学分析Key words
ethylenediamine/ethanolamine/atomic matrix method/Benson group contribution method/thermodynamic analysis分类
化学化工引用本文复制引用
荆钰,刘丹,林子昕,别海燕,安维中..乙醇胺胺化合成乙二胺体系热力学计算[J].化学工程,2025,53(5):36-41,6.
