电力科技与环保2026，Vol.42Issue(4)：612-623,12.DOI:10.19944/j.eptep.1674-8069.2026.04.010
基于DETA的混合醇胺溶液捕集低浓度CO2性能研究
Study on the performance of DETA-based mixed alkanolamine solution for capture of low-concentration CO2
摘要
Abstract
[Objective]At present,monoethanolamine(MEA)is the most widely used capture technology in the alcohol amine method.However,this method still has obvious shortcomings such as high energy consumption and limited absorption capacity.Therefore,it is urgent to develop new absorbents with high absorption performance and low regeneration energy consumption.[Methods]At present,monoethanolamine(MEA)is the main capture technology in the alcohol amine method.In this paper,diethylenetriamine(DETA)with high absorption rate is used as the main agent.Triethanolamine(TEA),2-Amino-2-methyl-1-propanol(AMP),N-Aminoethylpiperazine(AEP),Aminoethylethanolamine(AEEA)and Diethanolamine(DEA)were selected as activators.Under the condition of total amine mass fraction of 30%,the mixed amine absorbents were prepared according to the mass ratio of main agent to activator of 1∶1,2∶1,3∶1,and the CO2 absorption and desorption experiments were carried out.The load was measured and the energy consumption per unit CO2 desorption was calculated,and the absorbent formula with excellent performance was selected.[Results]The results showed that the absorption performance of DETA-AEEA system was the best when the mass ratio of DETA to AEEA was 3:1,and the absorption load reached 4.53 mol/L.The comprehensive performance of DETA-AEP system was the best when the mass ratio of DETA to AEP was 3:1,the absorption load reached 3.94 mol/L,and the desorption load reached 2.14 mol/L.Compared with the traditional MEA solution,the absorption load of the DETA-AEP system increased by 44.3%,the desorption load increased by 59.7%,and the regeneration energy consumption decreased by 19.9%.Overall,the DETA-AEP system achieved the optimal matching in terms of absorption performance and regeneration energy consumption,and had good operational stability.[Conclusion]The research results can provide a theoretical basis for the selection of mixed alcohol amine solution in industry.关键词
CO2捕集/混合醇胺溶液/化学吸收/解吸/低浓度CO2Key words
CO2 capture/mixed alkanolamine solution/chemical absorption/desorption/low concentration CO2分类
能源科技引用本文复制引用
张辉,赵立前,程振华,姜小祥..基于DETA的混合醇胺溶液捕集低浓度CO2性能研究[J].电力科技与环保,2026,42(4):612-623,12.基金项目
国家自然科学基金项目(52406251) （52406251）
