填料塔中有机胺吸收CO_(2)气液传质的研究进展  

Research progress on the mass transfer process of CO_(2) absorption by amines in a packed column

作　　者：王煦清 严圣林 朱礼涛 张希宝 罗正鸿[1] WANG Xuqing;YAN Shenglin;ZHU Litao;ZHANG Xibao;LUO Zhenghong(Department of Chemical Engineering,School of Chemistry and Chemical Engineering,State Key Laboratory of Metal Matrix Composites,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学化学化工学院化工系,金属基复合材料国家重点实验室,上海200240

出　　处：《化工学报》2023年第1期237-256,共20页CIESC Journal

基　　金：国家自然科学基金项目(U1862201,21625603)。

摘　　要：胺法吸收CO_(2)是典型的气液传质和反应问题。填料塔作为化工生产中重要的气液分离设备,其填料层空隙率高的特性使得其具有传质效率高、生产能力大、操作弹性大等优点。本文主要依据填料塔持液量低、填料层压降小的流体力学性能和液泛气速高的操作特性,结合有机胺吸收CO_(2)的反应特点,基于传质理论,综述了操作温度、CO_(2)负荷与分压、惰性气体流速、液相流速和温度、有机胺种类和浓度以及填料类型对CO_(2)吸收过程中传质性能的影响。在后续研究中,可以从实验和模拟相结合的角度对填料塔中有机胺吸收CO_(2)气液传质和反应过程进行深入研究,进一步提高填料传质效率和提升溶剂吸收性能。Amine absorption of CO_(2)is a typical gas-liquid mass transfer and reaction process.As an important gasliquid separation equipment in chemical production,packed columns have the advantages of high mass transfer efficiency,large production capacity,and large operation flexibility due to the high porosity of the packing layer.In this review,the mechanisms of CO_(2)absorption with amines and the gas-liquid mass transfer models are introduced.Besides,the effects of operating temperature,CO_(2)loading,CO_(2)partial pressure,inert gas flow rate,liquid flow rate and temperature,the type and concentration of amines,and packing types on the mass transfer process in CO_(2)absorption are summarized,based on the hydrodynamic properties of packed columns with low liquid holdup,low pressure drop in the packings and the operating characteristics with high gas velocity while fluids flooding.Finally,the directions of future studies are proposed,that in-depth research on gas-liquid mass transfer and reaction process in packed columns can be carried out from both experimental and simulation perspectives in terms of improving the mass transfer efficiency of packings and enhancing the amine absorption performance.

关 键 词：填料塔 传质 有机胺 二氧化碳捕集 吸收 

分 类 号：TQ051.8[化学工程]