三成分部分互溶易燃性液體混合溶液之閃火點預測; The flash-point prediction for ternary partially miscible mixtures of flammable solvents

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題名:	三成分部分互溶易燃性液體混合溶液之閃火點預測;The flash-point prediction for ternary partially miscible mixtures of flammable solvents
作者:	邱昭陽;Chao-Yang Chiu
貢獻者:	中國醫藥大學：職業安全衛生學系碩士班
關鍵詞:	閃火點;部分互溶溶液;液-液平衡;氣液平衡;Flash point;Liquid-Liquid equilibrium;Partially miscible mixtures;Vapor-Liquid equilibrium
日期:	2008-06-26
上傳時間:	2009-08-12 15:21:05 (UTC+8)
摘要:	閃火點為國內外物質安全資料表(Material Safety Data Sheet, MSDS)的重要資訊之一，而物質安全資料表中僅能提供純物質或特定濃度下的溶液閃火點。部分互溶混合溶液主要使用在液液萃取程序和非勻相蒸餾製程中，本研究目的在建立三成分部分互溶易燃性液體混合溶液之閃火點預測模式，並以實驗數據予以佐證。本研究預測模式的推導以氣-液平衡(Vapor-Liquid Equilibrium, VLE)、液-液平衡(Liquid-Liquid Equilibrium, LLE)、勒沙特列定律為理論基礎而推導出來。實驗儀器為德國Walter Herzog GmbH所製的Tag HFP 362 閃火點測試儀，標準測試方法為美國材料與測試協會的ASTM D56。本研究由甲醇 + 甲苯 + 2,2,4-三甲基戊烷以及甲醇 + 丙酮 + 正癸烷之兩種混合易燃性液體，來驗證模式的預測能力。研究結果顯示使用本研究所提的部分互溶混合溶液閃火點預測模式可以準確的預測整個組成範圍中溶液的閃火點。且於兩液相區使用VLE及LLE參數估算TIE LINE及閃火點，與實驗值相比，顯示有良好的預測能力。因此，本研究可使用於預防液液萃取程序和非勻相蒸餾製程火災爆炸及本質較安全設計。 Flash point is the most important variable used to characterize fire and explosion hazard of liquids. Even that has been listed in a variety of MSDS sheet, it is only valid for pure substance or specific compound composition. The partially miscible mixtures are used in liquid-liquid extraction process and heterogeneous distillation processs. This study intended to present a model for predicting the flash point of ternary partially miscible mixtures of flammable solvents. In this manuscript, the predicting model was derived based on the theory of Vapor-Liquid Equilibrium (VLE), Liquid-Liquid Equilibrium (LLE) and Le Chateliers’ rule. The experimental flash point data were used to validate this proposed model. The flash point analyzer, HFP 362-Tag, manufactured by Walter Herzog GmbH (Germany) was used to measure the flash point of studied mixtures, methanol + toluene + 2, 2, 4-trimethylpentane and acetone + methanol + n- decane. Our results reveal that immiscibility in the two liquid phase should not be ignored in the prediction of flash point. The predictive results of the proposed model could descryibe the experimental data well even it was applied to an immiscible solution. Based on this evidence, therefore, it appears reasonable to suggest potentiall application for our model in assessment of fire and explosion hazards, and development of inherently safer designs for chemical processs containing ternary partially miscible mixtures of flammable solvents.
顯示於類別:	[職業安全與衛生學系暨碩士班] 博碩士論文

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