用于二氧化碳捕集的新型低能耗少水吸收剂研究进展  

Research Progress in CO_(2) Capture Technology Using Novel Water Lean Solvent With Low Regeneration Energy

作　　者：徐燕洁 方梦祥[2] 刘可亮 许利华 施耀[1] XU Yanjie;FANG Mengxiang;LIU Keliang;XU Lihua;SHI Yao(College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310058,Zhejiang Province,China;State Key Laboratory of Clean Energy Utilization(Zhejiang University),Hangzhou 310027,Zhejiang Province,China;Xizi Clean Energy Equipment Manufacturing Co.,Ltd.,Hangzhou 310021,Zhejiang Province,China;Zhejiang Xizi New Energy Engineering Technology Co.,Ltd.,Hangzhou 311112,Zhejiang Province,China)

机构地区：[1]浙江大学化学工程与生物工程学院,浙江省杭州市310058 [2]能源清洁利用国家重点实验室(浙江大学),浙江省杭州市310027 [3]西子清洁能源装备制造股份有限公司,浙江省杭州市310021 [4]浙江西子新能源工程技术有限公司,浙江省杭州市311112

出　　处：《中国电机工程学报》2025年第3期986-998,I0015,共14页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

摘　　要：双碳目标驱动下,化学吸收法捕集CO_(2)作为最具有大规模应用前景的碳捕集技术被寄予厚望。但吸收剂的高能耗特性是阻碍其进一步发展的关键因素。新型少水吸收剂由于其在降低能耗方面的巨大潜力引起广泛关注。该文以吸收剂主剂作为分类基准,介绍3大类少水吸收剂(包括均相有机胺类少水吸收剂、两相吸收剂、离子液体、氨基硅油类少水吸收剂以及有机液体吸收剂)国内外研究进展,阐述少水吸收剂关键性能结果如热力学性能、动力学性能、物理特性等,并对不同类少水吸收剂性能进行了横向对比。结果表明,少水吸收剂具有相比乙醇胺(monoethanolamine,MEA)吸收剂更低的再生能耗(平均能耗:2.3 GJ/t CO_(2))。尽管少水吸收剂拥有相比MEA吸收剂更高的富液粘度,但其中均相少水吸收剂相平均粘度仅为10.3 m Pa·S,与目前混合胺吸收剂粘度相当,能够适配现有碳捕集系统中的换热系统,可达到理想换热效果,无需对贫富液换热器等进行额外改造优化。The chemical absorption method regarded as the leading capture technology is expected to be developed more broadly driven by the dual carbon target.However,the high regeneration energy of solvent stems its further development.In recent years,a novel water-lean solvent has caught huge attention due to its significant potential in the reduction of regeneration energy.Three different types of water-lean solvents classified by the absorbent including homogenous amine based water-lean solvents,biphasic solvents,ionic liquid,aminosilicone and CO_(2)BOL are introduced in this paper.The key factors of the solvent evaluation like thermodynamic behavior,kinetics,physical property are elucidated and compared among different water-lean solvents.An average regeneration energy of 2.3 GJ/tCO_(2)of water-lean solvents is much lower than that of MEA aqueous solvent,making them more favorable for industrial applications.A higher viscosity of rich solvent is gained in water-lean solvent compared with MEA solvent,while homogenous water-lean solvents exhibit an average viscosity of 10.3 mPa·S,which is comparable to traditional blended amine.This characteristic allows homogeneous water-lean solvents to be used in the existing heat exchangers of CO_(2)capture system without requiring any additional optimization.

关 键 词：二氧化碳捕集 少水吸收剂 两相吸收剂 离子液体 氨基硅油 有机液体 

分 类 号：TK09[动力工程及工程热物理]