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新型少水型相变吸收剂的筛选及其含水量影响分析

Screening of novel low-water biphasic absorbents and their moisture content impacts
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摘要 为克服水型吸收剂能耗高、腐蚀性强的缺点,提出一种基于混合胺的新型少水型相变吸收剂。开展溶剂效应对吸收剂的吸收、分相、富相黏度等性能的影响实验,研究含水量与吸收剂性能的关系,为优化吸收剂的含水量提供理论依据。实验结果表明,增加吸收剂的含水量可以提高吸收剂对CO_(2)的吸收性能、加速相分离和降低富相黏度,水与二甲基亚砜最佳的质量比为4:6,与质量分数为30%的乙醇胺相比,新型吸收剂的循环容量提高了27%,同时具备相变和少水的特性,有效降低了能耗和腐蚀性。 In order to reduce adverse effects of water on energy consumption and corrosiveness of absorbents,a new phase change absorbent based on mixed amine with low water content was proposed.Solvent effects on absorption,phase separation,rich phase viscosity and other properties of the absorbent were studied and the relationship between water content and absorbent performance was established.This study provided theoretical basis for the optimization of water content of absorbents.The experimental results show that increasing water content of the absorbent can improve CO_(2) absorption performance,accelerate phase separation and reduce rich-phase viscosity,and the optimal mass ratio of water to dimethyl sulfoxide is determined as 4:6.Compared to MEA(mass fraction is 30%),the new absorbent increases the recycle capacity by 27%with phase change and low water content properties,which effectively reduces energy consumption and corrosion.
作者 张达光 钱新凤 侯大伟 汪鑫 慕晓炜 ZHANG Daguang;QIAN Xinfeng;HOU Dawei;WANG Xin;MU Xiaowei(East China Electric Power Test&Research Institute,China Datang Corporation Science and Technology Research Institute Co.Ltd.,Hefei 230088,China)
出处 《高校化学工程学报》 EI CAS CSCD 北大核心 2024年第5期831-838,共8页 Journal of Chemical Engineering of Chinese Universities
基金 中国大唐集团科技项目(KY-2022-05)。
关键词 二氧化碳 少水型两相吸收剂 含水量 相分离 富相黏度 CO_(2) low-water biphasic absorbent water content phase separation viscosity of rich phase
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