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| 題 名 | Salt Effect and its Application to IPA-Water Azeotrope=鹽類對氣液相平衡之影響 |
|---|---|
| 作 者 | 李亮三; 林振隆; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
| 卷 期 | 17:1 1986.01[民75.01] |
| 頁 次 | 頁11-18 |
| 分類號 | 460.024 |
| 關鍵詞 | 平衡; 氣液相; 鹽類; |
| 語 文 | 英文(English) |
| 中文摘要 | 在以蒸餾分離操作過程中,往往遭遇到共沸點的困擾,無法得到很純的蒸餾液,以往解決的方法為改變塔內之壓力以轉移共沸點,或加入某一種適當之溶劑以形成第三種混合液去除共沸物,但前者的方法過於消耗能量,後者需增加額外的蒸餾塔以及能量以除去蒸餾液中所加入之溶劑。本篇論文是研究另一種新方法,即在待蒸餾液中加入一種鹽類,而突破共沸點,此種方法的優點為節省能源及不需額外的蒸餾塔。本論文採用異丙醇及水系統及三種性質不同的鹽類分析,然後將實驗結以數學方程式表示以便預測此種同沸物在鹽類存在下之平衡情形。研究結果發現鹽類確能改變混合液之氣液平衡曲線。只要所加入之類鹽恰當且夠量的話,則在蒸餾塔中可得到很純的蒸餾液,就本研究而論,發現氯化鎂是最適合異丙醇及水系統的鹽。同時它也是最易溶於混合液中的鹽。另一方面,由實驗結果及計算值比較得知,本研究中所提出之數學模式,適用於異丙醇-水-鹽系統,可以預測異丙醇及水共沸物有鹽類存在時的平衡關係。 |
| 英文摘要 | In this research, shifting of the azeotropic point of IPA-water system by adding inorganic salts to the mixture is studied. Three different salts, NaCl, Na₂SO₄, MgCl₂ have been used. The experiments show that inorganic salts have this effect as expected. MgCl₂ can even diminish the azeotrope, while using of Na₂SO₄ has not any advantage. In this research, the correlation of activity coefficients of components with existence of salt is also studied. A two parameter model is used here. The correlation matches the experimental data quite well except at low concentration of isopropyl alcohol. |
本系統中英文摘要資訊取自各篇刊載內容。