• 作者： Lee, Liang-Sun; Huang, Shih-Hsing; Huang, Jin-Feng
• 中文摘要： 丙烯醇為主要之反應介質用於製造樹脂、醫藥產品及農藥,但丙烯醇在生產過程中與水混合形成共沸物,無法以傳統蒸餾分離,本論文主要探討此混合物之沸點是否會受壓力影響,是否可以連續變壓蒸餾分離。本論文由實驗得到100. 23、42.25及9.60kPa低壓下之汽液平衡數據(高於大氣壓會產生反應為不可行)並通過 Herington一致檢測。並以Wilson、NRTL及UNIQUAC模式,得到相當好的關聯關係。並可以預測其他實際操作條件下之汽液平衡關係,以運用於實際設計。本論文以實驗結果及理論關聯模式證明丙烯醇及水之共沸點組成幾乎不受壓力影響。因此連續變壓蒸餾分離共沸混合物之程序,本文證明並不可行。因此丙烯醇自水溶液之分離需考慮其他的分離程序。
• 英文摘要： The formation of azeotrope of allyl alcohol with water causes difficulty in its recovery from aqueous solution. Owing to inadequate experimental data, the proper process to separate allyl alcohol from water might be difficult to determine. In this paper, the phase behavior of this azeotrope is further studied at atmospheric pressure of 100.23kPa, and at reduced pressures of 42.25 and 9.60kPa to determine the feasibility of separation by taking the advantage of pressure effect on vapor-liquid equilibrium. The experimental data collected are examined with Herington consistency test, and are fairly well correlated with Wilson, NRTL, and UNIQUAC models. The experiment results show that the azeotropic composition of this mixture is slightly affected by pressure. The theoretical and experimental approaches give fair understanding of allyl alcohol-water thermodynamic behavior, and conclude that the separation of this mixture by a consecutive two-column azeotropic distillation is not practical and even impossible. Other process such as extractive distillation may be an alternative.
• 中文關鍵字： 共沸物; 丙烯醇; 壓力效應; 相行為
• 英文關鍵字： Azeotrope; Allyl Alcohol; Pressure Effect; Phase Behavior