混合溶劑除濕液鹽類（MgCl2）+ 醇類（DEG，TEG，PG，T4EG，DPG，TPG）之熱物性質（密度、黏度、蒸氣壓）量測研究

Vapor Pressure, Density, and Viscosity Measurements of Mixed-Solvent Desiccant Systems containing Glycol (DEG/TEG/T4EG/PG/DPG/TPG) + Salt (MgCl2) + Water

陳尚誼(Shang-Yi Chen)

指導教授 ： 李夢輝

中原大學/工學院/化學工程研究所/碩士(2010年)

https://doi.org/10.6840/cycu201000420

摘要

本研究主要為探討新混合溶劑除濕液(醇類 + 水 + 鹽類)系統之氣液平衡量測，所選擇溶劑為醇類diethylene glycol (DEG)、triethylene glycol (TEG)、propylene glycol (PG)、tetraethylene gloycol (T4EG)、dipropylene glycol (DPG)、tripropylene glycol (TPG)這六種，鹽類則選擇氯化鎂(Magnesium chloride)以(4.0, 9.0 and 16.0wt%)與固定濃度(40wt%)的醇類水溶液做配製。由於本系統中含有電解質，故採用(Söhnel and Novotný, 1985; Söhnel and Novotný, 1988)提出之經驗式加以改良來表示本研究系統之密度與黏度。蒸氣壓部分則是利用Antoine equation熱力學模式，描述系統蒸氣壓與溫度之間的關係；並以平均圓球近似法理論(Söhnel and Novotný, 1985; Söhnel and Novotný, 1988; Shiah and Tseng, 1994)來描述系統蒸氣壓、濃度與溫度的關係。實驗所得結果，可應用於設計設備之基本數據。

關鍵字

蒸氣壓 ； 醇類 ； 密度 ； 黏度 ； 氯化鎂

並列摘要

In this work, new experimental data for vapor pressure, density, and viscosity of the mixed-solvent desiccant systems containing 40.0 wt% glycol (1) + salt (2) + water (3) were reported for temperatures up to 343.15 K (normal atmospheric condition). The considered glycols were diethylene glycol, triethylene glycol, propylene glycol, tetraethylene gloycol, dipropylene glycol and tripropylene glycol; and the salt is magnesium chloride (wt% = 4.0, 9.0, and 16.0). The vapor pressure, density, and viscosity were presented as functions of temperature and compositions. An empirical equation was used to correlate the temperature and compositional dependence of the density and viscosity data and a model based on the mean spherical approximation for aqueous electrolyte solutions incorporating the pseudo-solvent approach was used to represent the measured vapor pressure as functions of temperature and composition. Satisfactory results were obtained for both density and vapor pressure calculations.

並列關鍵字

Viscosity ； Density ； Vapor pressure ； Magnesium chloride ； glycol

參考文獻

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