醇胺溶液吸收CO_2的动力学研究进展  

Reaction kinetics of absorption of carbon dioxide with alkanolamines

作　　者：陈思铭[1] 张永春[1] 郭超[1] 陈绍云[1] 

机构地区：[1]大连理工大学精细化工国家重点实验室,辽宁大连116024

出　　处：《化工进展》2014年第A01期1-13,共13页Chemical Industry and Engineering Progress

摘　　要：醇胺是一种用于脱除CO2的常用溶剂,被认为是最经济的分离吸收方法。因此总结CO2与醇胺反应的动力学研究具有举足轻重的意义。本文的目的是对CO2与醇胺水溶液反应的动力学进行总结概述:介绍了3种化学吸收理论模型;详细总结醇胺与CO2的反应机理,包括两性离子反应机理、三分子反应机理、碱催化水合CO2反应机理,通常来说,CO2与伯胺、肿胺、空间位阻胺的反应机理为两性离子机理,CO2与叔胺的反应机理为碱催化水合CO2反应机理;列举动力学实验装置;归纳对比文献中的动力学数据。Alkanolamines are the most popular absorbents used to remove CO2 from gas streams,and is also considered the most economical separation method.Therefore,the kinetics study of CO2 reactions with alkanolamines is of considerable importance.The kinetics of the reaction of CO2 with aqueous solutions of alkanolamines is reviewed.Three models of chemical absorption theory are presented.Various reaction mechanisms used to interpret experimental kinetics data zwitterion,termolecular kinetics and base catalyzed hydration are discussed.Generally,the reaction of CO2 with primary,secondary and sterically hindered amines is governed by the zwitterion mechanism,whereas the reaction with tertiary amines is described by the base catalyzed hydration of CO2.Simultaneously,kinetics experiment devices are listed,the kinetics data in the literatures are summarized and compared.

关 键 词：醇胺 二氧化碳 理论模型 反应机理 动力学 

分 类 号：TQ028.2[化学工程]