混合有機溶劑與醇胺水溶液之比熱量測：Sulfolane/AMP/H2O

Measurements of the heat capacity of aqueous Sulfolane/ 2-amino-2-methyl-1-propanol (AMP) solutions

何聖智(Sheng-Chih Ho)

指導教授 ： 李夢輝

中原大學/工學院/化學工程研究所/碩士(2002年)

https://doi.org/10.6840/cycu200200304

摘要

本研究是利用示差掃描熱量計(Differential Scanning Calorimeter, DSC)來量測有機溶劑Sulfolane之比熱值；及有機溶劑水溶液Sulfolane/H2O與混合有機溶劑醇胺Sulfolane/AMP之比熱值，量測的濃度範圍分別為 =0.2/0.4/0.6/0.8 mol fraction。而混合有機溶劑醇胺水溶液方面，則是量測Sulfolane/AMP/H2O系統之比熱值，濃度範圍為 = 0.6～0.8 mol fraction。各系統量測的溫度範圍皆為30℃～80℃。
實驗所測得之比熱值皆以Redlich-Kister expansion予以迴歸。經計算後得到二成份系統之 值的平均絕對誤差(average absolute deviation, AAD%)為2.2%，CP值的平均絕對誤差為0.3%；三成份系統之 值的平均絕對誤差為7.7%，而CP值的平均絕對誤差則為0.3%。
有效的設計氣體吸收設備如吸收塔、汽提塔、熱交換器等，在計算蒸氣和冷卻水用量時，皆需仰賴基礎吸收與熱焓相關數據之量測，其中吸收劑的比熱對於熱交換器在估算蒸氣及冷卻水用量會扮演一個很重要的設計依據。故本研究所得之結果將可做為設計吸收氣體程序中，熱交換器之基礎比熱數據及計算工具。

關鍵字

比熱 ； 過剩比熱

並列摘要

The Heat capacities of pure Sulfolane and aqueous mixtures of Sulfolane with H2O and Sulfolane with 2-amino-2-methyl-1-propanol from 30 to 80℃ with a differential scanning calorimeter (DSC) have been measured. An excess molar heat capacity expression using the Redlich-Kister expansion for the composition dependence is used to represent the measured CP of aqueous Sulfolane, H2O with 2-amino-2-methyl-1-propanol System. The overall average absolute percentage deviations for the calculation of the molar heat capacities are 0.3% for the binary and ternary systems, respectively. The heat capacities of aqueous mixtures of Sulfolane with H2O and Sulfolane with 2-amino-2-methyl-1-propanol presented in this study are, in general, of sufficient accuracy for most engineering-design calculations.

並列關鍵字

Sulfolane ； DSC

參考文獻

施子偉,“混和醇胺水溶液之比熱量測：DEA/MDEA/H2O, DEA/AMP/H2O及DEA/2-PE/H2O系統”,中原大學化學工程研究所碩士論文, 2001.

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American Society for Testing and Materials, Standard Test Method for Determining Specific Heat Capacity by Differential Scanning Calorimetry. 1995, E1269-95.

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Chen, Y. J.; Li, M. H. Heat Capacity of Aqueous Mixtures of Monoethanolamine with 2-Amino-2-methyl-1-propanol. J. Chem. Eng. Data, 2001, 46, 102-106.