雙成份系統擴散係數量測：二乙胺基乙醇、2-二甲基胺基乙醇、單異丙胺、貳次乙亞胺、薩弗侖 水溶液

Measurements of Mutual Diffusion Coefficients of Binary systems：Aqueous N,N-Diethylethanolamine, N,N-Dimethylethanolamine, Monoisopropanolamine, Piperazine, and Sulfolane Solutions

郭建志(Chien-Chin Kuo)

指導教授 ： 李夢輝

中原大學/工學院/化學工程研究所/碩士(2005年)

https://doi.org/10.6840/cycu200500416

摘要

利用泰勒分散法(Taylor dispersion method)量測醇胺水溶液 N,N-diethylethanolamine (DEEA), N,N-dimethylethanolamine (DMEA), monoisopropanolamine (MIPA), piperzaine (PZ) 和sulfolane 在水溶液中之無限稀釋擴散係數以及交互擴散係數數據(mutual diffusion coefficient)。實驗操作在一大氣壓下；溫度範圍為30至70℃；濃度範圍為0.5至4 kmol/m3。實驗儀器以及操作條件符合學者Alizadeh等人在1980年所提供的方法。實驗先量測MEA + 水的擴散係數並與文獻值比較，以確認量測方法之正確性。實驗所得數據由一簡單關係式來修正(Snijder et al., 1993)。並由UNIDIF模式(Hsu and Chen, 1998)¬來表示，皆有令人滿意的結果。再由RHS (rough hard sphere theory)理論(Dymond, 1974)來表示出與自由體積的關係式。這研究結果能用於探討使用醇胺水溶液當吸收劑吸收氣體時，決定反應機構及反應速率常數之基礎數據。

關鍵字

擴散係數

並列摘要

The diffusion coefficients of alkanolamines in water at infinite dilution and the mutual diffusion coefficients of aqueous N,N-diethylethanolamine (DEEA), N,N-dimethylethanolamine (DMEA), monoisopropanolamine (MIPA), piperazine (PZ) and sulfolane solutions have been studied by using the Taylor dispersion method. Experimental results for temperature 30 to 70℃ and at atmospheric pressure as functions of the concentration of alkanolamines from 0.5 to 4 kmol/m3 are reported. The apparatus and experimental condition are consistent with the criteria proposed by Alizadeh et al. (1980). Experiment with the binary system of monoethanolamine (MEA) + water showed that the experimental setup provides accurate mutual diffusion coefficient data. The obtained mutual diffusion coefficients were correlated by using both a simple relation of Snijder et al. (1993) and by the UNIDIF equation (Hsu and Chen, 1998). The measured mutual diffusivity data are also well represented by a free-volume expression (rough hard sphere theory). The results of this study can be used for developing the kinetic model for gas absorption using aqueous alkanolamine solutions as absorbent.

並列關鍵字

Diffusion Coefficients

參考文獻

林東億，醇胺在醇胺水溶液中之擴散係數量測研究，中原大學化工所，2003年。

張力璁，醇胺水溶液之交互擴散係數量測，中原大學化工所，2004年。

Alizadeh, A.; Nieto de Castro, C. A.; Wakeham, W. A. The Theory of the Taylor Dispersion Technique for Liquid Diffusivity Measurements. Int. J. Thermophys. 1980, 1, 243–284.

Aris, R. On the Dispersion of a Solute in a Fluid Flowing Through a Tube. Proc. R. Soc. London 1956, A235, 67–77.

Astarita, G.; Savage, D. W.; Bisioo, A. Gas Treating With Chemical Solvents;John Wiley ＆ Sons: New York, 1983.