臺灣博碩士論文加值系統

醋酸為工業中常用的藥品，但醋酸易與水產生似共沸的現象而不易分離。目前製程中有以乙酸異丙酯為挾帶劑(entrainer)來分離醋酸與水，但蒸餾分離系統卻容易有不穩定的情形。故本研究即針對以乙酸異丙酯為醋酸與水的分離挾帶劑的系統來討論其相行為。
本研究討論醋酸-水-乙酸異丙酯的相行為包括汽-液相平衡及液-液平衡。本研究進行液-液相平衡數據量測及利用改良 Othmer vapor-liquid equilibrium (VLE)裝置進行汽-液平衡數據的量測，並以Marek與Standart的方法及Hayden-O’Connell的方法考慮醋酸的分子結合效應，並以NRTL、UNIQUAC液相模式對汽-液平衡實驗數據關聯。
結果發現所有的關聯方法均得到相當不錯的結果。

It is observed that operation at a stable steady state is not easy in a distillation column of purifing acetic acid from water using isopropyl acetate as an entrainer. In order to find out the reason of such phenomenon, the phase behavior, the vapor-liquid equilibrium (VLE) and liquid-liquid equilibrium (LLE), of isopropyl-water-acetic acid mixture was studied experimentally.
The VLE data of acetic acid-water and acetic acid-isopropyl acetate and VLE and LLE data of acetic acid-water-isopropyl acetate were measured with different equilibrium cells at 760 mmHg with a pressure controlled system.
The experimental data were correlated with the NRTL and the UNIQUAC models. The association effect of acetic acid in vapor phase was considered by the Marek and Standart’s semi-chemical theory and the Hayden-O’Connell’s method. The correlation results show that the the NRTL model associated with Hayden-O’Connell’s consideration has better agreement than that of the Marek and Standart’s semi-chemical theory.

目錄
摘要I
AbstractII
目錄III
表目錄V
圖目錄VIII
符號說明X
第一章 緒論1
第二章 理論4
2.1 平衡準則5
2.2 Hayden-O’Connell的化學理論方法6
2.3 Maerk 和 Standart的化學理論方法10
2.4 一致性檢測13
2.5 實驗數據處理15
第三章 實驗17
3.1 實驗藥品17
3.2 實驗裝置及儀器配件17
3.3 實驗操作步驟18
3.3.1 檢量線的製作18
3.3.2 醋酸-水-乙酸異丙酯反應的測試19
3.3.3 液液平衡實驗19
3.3.4 汽液平衡實驗20
第四章 結果與討論21
4.1 檢量曲線的擬合21
4.2 醋酸-水-乙酸異丙酯反應的測試21
4.3 乙酸異丙酯-醋酸、水-醋酸雙成份汽液平衡22
4.4 乙酸異丙酯-醋酸-水三成份汽液平衡及液液平衡24
第五章 結論25
參考文獻26
表30
圖50
附錄 A 汽相分子結合非理想行為的計算66
附錄 B 三成份系統定量分析法80
附錄 C 液相模式82

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夏一民，電解質相平衡之研究，國立台灣工業技術學院博士論文，民國八十五年。