Experiments and theory for the surface tensions of carbonated MDEA-PZ aqueous solutions

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• 作者：Dong Fu ; ^{fudong@tsinghua.org.cn} ; Yifei Xu ; Xueying Hua
• 关键词：Surface tension ; MDEA&ndash ; PZ aqueous solution ; CO2 loading
• 刊名：Fluid Phase Equilibria
• 出版年：2012
• 出版时间：25 January 2012
• 年：2012
• 卷：314
• 期：Complete
• 页码：121-127
• 全文大小：484 K

文摘

Surface tensions of carbonated N-methyldiethanolamine (MDEA)-piperazine (PZ) aqueous solutions were measured at the temperatures ranging from 293.15 to 323.15 K. A theoretical model was proposed to correlate the surface tensions and the calculated results agreed well with the experiments. The residual MDEA and PZ in the carbonated aqueous solutions were determined on the basic of ¡®shuttle?mechanism. The temperature, amine concentration and CO₂ loading (¦Á, mole number of CO₂/mole number of MDEA + PZ) dependences of the surface tensions were demonstrated.