Abstract: Carbon dioxide absorption and desorption are investigated at ambient pressure in two aqueous amine solutions，20% monoethyamino (MEA) + 2% N-methyldiethanolamine (MDEA) and 20% 2-(aminoethylamino) ethanol (AEE) + 2% N-methyldiethanolamine (MDEA). Both solutions were studied using static and the dynamic methods. Results showed that the capacity of CO2 absorption and desorption in 20%AEE+2%MDEA is higher than that in 20%MEA+2%MDEA at the same absorption temperature with little deterioration. In addition，20%AEE+2%MDEA has lower energy consumption by 10% than 20%MEA+2%MDEA to achieve the same desorption result. AEE shows a great potential of industrial application in the future.

Key words: ethanol amine, 2-(aminoethylamino) ethanol, N-methyldiethanolamine, carbon dioxide, ethanol amine, 2-(aminoethylamino) ethanol, N-methyldiethanolamine, carbon dioxide

摘要： 在常压下考察了体积分数20%乙醇胺（MEA）+2% N-甲基二乙醇胺（MDEA）与20%羟乙基乙二胺（AEE）+ 2% N-甲基二乙醇胺（MDEA）有机胺水溶液对CO2的吸收及解吸效果。考察了静态吸收和中试动态吸收实验。实验结果表明：在吸收温度及解吸温度相同的条件下，20%羟乙基乙二胺（AEE）+2% N-甲基二乙醇胺（MDEA）吸收剂对CO2的吸收及解吸效果要好于20%乙醇胺（MEA）+2% N-甲基二乙醇胺（MDEA），而且不易降解。达到同样的解吸效果，20%羟乙基乙二胺（AEE）+2% N-甲基二乙醇胺（MDEA）吸收剂的能耗要低10%左右，具有较好的工业应用前景。

关键词: 乙醇胺, 羟乙基乙二胺, N-甲基二乙醇胺, CO2, 乙醇胺, 羟乙基乙二胺, N-甲基二乙醇胺, 二氧化碳