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填料塔中AEE与MEA混胺对低浓度CO2的吸收

燕 涛,陈绍云,张永春,陈 恒   

  1. 大连理工大学化工与环境生命学部,辽宁 大连 116024
  • 出版日期:2012-08-05 发布日期:2012-08-05

Absorption of low concentration carbon dioxide by mixed amines of AEE and MEA in packed tower

YAN Tao,CHEN Shaoyun,ZHANG Yongchun,CHEN Heng   

  1. Faculty of Chemical,Environment and Biological Science and Technology,Dalian University of Technology,Dalian 116024,Liaoning,China
  • Online:2012-08-05 Published:2012-08-05

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

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

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