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研究生： 廖建華
論文名稱： 蒸餾與氣相滲透複合製程在異丙醇分離的應用
Hybrid Process of Distillation and Vapor Permeation in the Application of Isopropyl Alcohol Separation
指導教授： 汪上曉
口試委員: 劉佳霖
劉英麟
錢義隆
學位類別： 碩士
Master
系所名稱： 工學院 - 化學工程學系
Department of Chemical Engineering
論文出版年： 2014
畢業學年度： 102
語文別： 中文
論文頁數： 68
中文關鍵詞： 蒸餾 、氣相滲透 、複合製程 、異丙醇 、薄膜
相關次數： 點閱：2  下載：0 
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    • 蒸餾與薄膜分離的複合製程概念最先在1950年代被提出來，在後來的文獻中，亦有眾多方向的探討。然而，文獻鮮少探討蒸餾與薄膜分離的複合製程中，薄膜的何種性質是影響整體製程的關鍵。此外，對於膜材既定的觀念與性質指標在設計複合製程中是否仍舊適合，仍需進一步的探討。本論文為實現薄膜分離系統的商業效益，使用模擬軟體Aspen Plus V8.4，配合氣相滲透(Vapor Permeantion)實驗數據，整合傳統分離程序與薄膜分離蒸發系統，針對蒸餾與氣相滲透的複合製程，探討了原有對膜材的觀念與指標是否仍舊適合，並且探討不同濃度的異丙醇進料案例中，薄膜性質對於製程操作成本的影響，並與傳統製程進行經濟成本的評估，得到了以下結論：
    1.相對於透過量/選擇率會因條件變動，Permeance(m3/m2 hr bar)為評估的指標更適當。
    2.針對低濃度(共沸組成的左邊)異丙醇進料
    D-VP-D(Distillation-Vapor Permeation-Distillation)：高LW是關鍵，進入考慮的製程。
    D-VP(Distillation-Vapor Permeation)：(1)即使有高LW與高(LW/LIPA)，亦不進入考慮的製程。(2)在真空度提高，目標純度由99.95wt%降低為99.6wt%的條件下，節省37%的成本，結論與文獻中的D-PV製程設計相同。
    ※LW：Permeance of Water，LIPA：Permeance of IPA。
    3.針對高濃度(共沸組成的右邊)異丙醇進料
    D-VP-D：高LW是關鍵，節省約56%的成本。
    D-VP：需擁有高(LW/LIPA) ，進入考慮的製程。

    摘要 1 目錄 II 圖目錄 IV 表目錄 1 第一章、簡介 1 一.1研究背景 1 一.2文獻回顧 4 一.2.1傳統分離共沸物的製程 4 一.2.1.1共沸蒸餾法(Azeotrope Distillation) 4 一.2.1.2萃取蒸餾法(Extractive Distillation) 6 一.2.1.3變壓蒸餾法(Pressure Swing Distillation) 8 一.2.2薄膜分離製程 10 一.2.3蒸餾與薄膜分離複合製程 14 二.2.3.1滲透蒸發的複合製程(Pervaporation-based Hybrid Process) 14 二.2.3.2複合製程的改良 18 一.3研究目的 21 第二章、研究方法 22 二.1基本性質與模型 22 二.1.1物質性質 22 二.1.2熱力學性質 23 二.1.3熱力學模型 24 二.1.4平衡板模型 26 二.2薄膜蒸發實驗(VP)與數據處理 28 二.2.1實驗步驟與數據 28 二.2.2ACM中的薄膜模型 31 二.2.3薄膜的平均分割數量(k) 33 二.2.4Permeance的計算 34 二.2.5實驗數據處理 36 二.2.6經濟評估方法 39 第三章、低濃度異丙醇與水的穩態模擬 40 三.1傳統共沸蒸餾法(AZ) 41 三.2單塔與氣相滲透與單塔蒸餾(D-VP-D) 42 三.2.1透過量與選擇率的影響 44 三.2.2VP文獻數據模擬 47 三.3單塔與氣相滲透(D-VP) 51 三.4低濃度異丙醇進料結果與討論 53 三.5與Hoof et al.25文獻結果討論 55 第四章、高濃度異丙醇與水的穩態模擬 57 四.1傳統共沸蒸餾法(AZ) 58 四.2單塔與氣相滲透與單塔蒸餾(D-VP-D) 59 四.3單塔與氣相滲透(D-VP) 62 四.4高濃度異丙醇進料結果與討論 63 第五章、結論 65 參考文獻 65

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