Absorption of carbon dioxide into aqueous blends of 2-amino-2-hydroxymethyl-1,3-propanediol and monoethanolamine

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• 作者：Ranjith Muraleedharan ^{m.ranjith@iitg.ernet.in} ; Arijit Mondal ^{a.mondal@iitg.ernet.in} ; Bishnupada Mandal ; ^{bpmandal@iitg.ernet.in}
• 关键词：CO2 removal ; 2-Amino-2-hydroxymethyl-1 ; 3-propanediol ; Monoethanolamine ; Blended amines ; Physicochemical properties
• 刊名：Separation and Purification Technology
• 出版年：2012
• 期刊代码：78_13835866
• 类别：ce
• 出版时间：19 June, 2012
• 卷：94
• 期：Complete
• 页码：92-96
• 文件大小：382 K

摘要

This work presents the absorption of CO₂ into aqueous blends of 2-amino-2-hydroxymethyl-1,3-propanediol (AHPD) and monoethanolamine (MEA) at 303, 313, and 323 K as well as physicochemical properties of this blended amine solvent over the temperature range from 293 to 323 K. The total amine concentration of the blend in the solution was kept constant at 30%by mass. The absorption flux of CO₂ into the aqueous blends increased with the increase in temperature from 303 to 323 K. The absorption flux decreased when the concentration of AHPD increased in the blends. The densities and viscosities of six (AHPD + MEA + H₂O) mixtures were measured and correlated over the temperature range 293 to 333 K. The correlated values were found in excellent agreement with the experiment values.