醇胺法吸收烟道气中二氧化碳的研究进展  

Research progress on absorption of carbon dioxide in flue gas by alcohol amine method

作　　者：李亚清 宋沆 张玉涛 郭强 张园勃 陈淼 王麟迦 金新祖 LI Yaqing;SONG Hang;ZHANG Yutao;GUO Qiang;ZHANG Yuanbo;CHEN Miao;WANG Linjia;JIN Xinzu(College of Safety Science and Engineering,Xi’an University of Science and Technology,Xi’an 710054,Shaanxi,China)

机构地区：[1]西安科技大学安全科学与工程学院,陕西西安710054

出　　处：《低碳化学与化工》2024年第10期81-91,共11页Low-Carbon Chemistry and Chemical Engineering

基　　金：国家自然科学基金(52174196);中国博士后科学基金(2023M742817);陕西省博士后科研项目(2023BSHEDZZ299)。

摘　　要：二氧化碳(CO_(2))捕集、利用与封存技术是实现双碳目标的主要技术手段之一。醇胺法吸收烟道气中CO_(2)是目前发展最成熟、应用最广泛的CO_(2)捕集工艺,已普遍应用于烟道气工业除碳。吸收剂是醇胺法的核心要素,选择合适的吸收剂已成为目前的重点研究方向。综述了醇胺类吸收剂的分类和工作原理,以及吸收烟道气中CO_(2)的工艺流程。深度分析了乙醇胺(MEA)和甲基二乙胺(MDEA)单独作为吸收剂,以及MEA和MDEA分别作为主要吸收剂的二元混合吸收体系的性能。针对醇胺法吸收烟道气中CO_(2)存在的再生效率低、解吸能耗高、吸收剂易腐蚀设备和回收成本高等缺点,提出了在醇胺溶液中加入活化剂和添加剂、使用新型吸收剂和优化工艺参数等一系列优化措施。最后对醇胺法吸收烟道气中CO_(2)的发展进行了展望,以期为开发高效醇胺类吸收剂提供借鉴。Carbon dioxide(CO_(2))capture,utilization and storage technology is one of the main technological ways to achieve the carbon peaking and carbon neutrality goal.Alcohol amine method to absorb CO_(2) in flue gas is the most mature and widely used CO_(2) capture process,which has been commonly used in the industrial decarbonization of flue gas.Absorbents are the core elements of the alcohol amine method,and the selection of suitable absorbents has become a key research direction at present.The classification and working principles of alcohol amine absorbents and the process flow of CO_(2) absorption in flue gas were reviewed.The performances of a binary mixed absorption system of ethanolamine(MEA)and methylenediamine(MDEA)as absorbents and MEA and MDEA as main absorbents respectively were analyzed in depth.A series of optimization measures,including adding activators and additives into the alcohol amine solution,using new absorbents,were proposed to address the drawbacks of low regeneration efficiency,high desorption energy consumption,easy corrosion of absorbents and high recovery costs in the alcohol amine method to absorb CO_(2) in flue gas.Finally,the development of the alcohol amine method to absorb CO_(2) in flue gas was discussed,so as to provide a reference for the development of highefficiency alcohol amine absorbents.

关 键 词：CO_(2) 碳捕集 醇胺法 MEA MDEA 烟道气 

分 类 号：TK028[动力工程及工程热物理]