Advanced Chemical Engineering Thermodynamics Chapter 6 Fugacities in
- Slides: 57
Advanced Chemical Engineering Thermodynamics Chapter 6 Fugacities in liquid mixtures :Excess function 1
14 Chapter 6 Fugacities in liquid mixtures :Excess function n 活性係數模式之各成分表 示式 無限稀釋活性稀釋值計算 式 兩個實驗結果
15 Chapter 6 Fugacities in liquid mixtures :Excess function n 第二種類型之過剩 Gibbs 自由能函數 n n n 過剩 Gibbs 自由能的 Redlich-Kister展開式 各個係數由實驗數據計算 取得 Redlich-Kister 模式中各係 數提供的貢獻 n n A項 B 與 D … 等項
16 Chapter 6 Fugacities in liquid mixtures :Excess function n 各項貢獻之線型 n C 與 E … 等項 n 簡單雙成分混合物系統 之結果
18 Chapter 6 Fugacities in liquid mixtures :Excess function n Gibbs-Duhem方程式的應 用
20 Chapter 6 Fugacities in liquid mixtures :Excess function n 以Gibbs-Duhem方程式 推演成份 2 之活性係數 模式表示式 n 以邊界條件求取積分常 數 n 完成囉
21 Chapter 6 Fugacities in liquid mixtures :Excess function n 成分分壓的計算 n 由定壓下之組成與系統溫 度實驗數據
25 Chapter 6 Fugacities in liquid mixtures :Excess function n 計算流程圖 n 最適化計算;目的在求 取活性係數模式的參數
28 Chapter 6 Fugacities in liquid mixtures :Excess function n 熱力學一致性測試 圖解示意圖
29 Chapter 6 Fugacities in liquid mixtures :Excess function n 取不同實驗數據種類計算 之比較 n 實驗數據 P-x-y n n n 取用 P-x-y 取用 P-x
30 Chapter 6 Fugacities in liquid mixtures :Excess function n 想預測 P 的不凖度大 預測 y 的效果不錯 n 作圖法以分析計算效果 n
32 Chapter 6 Fugacities in liquid mixtures :Excess function n n 實驗的熱力學模式 Wohl’s expansion n 利用分子有效體積來描述 粒子大小的貢獻 n n 莫耳分率 有效體積分率
38 Chapter 6 Fugacities in liquid mixtures :Excess function n Scatchard – Hamer 方程 式的定位
39 Chapter 6 Fugacities in liquid mixtures :Excess function n 實驗的熱力學模式 n 局部組成的觀念
40 Chapter 6 Fugacities in liquid mixtures :Excess function n 局部莫耳組成表示式 n 局部體積分率表示式
41 Chapter 6 Fugacities in liquid mixtures :Excess function n Wilson 方程式 n n n 高分子溶液的 Gibbs自由 能模式表示式 理想溶液的 Gibbs自由能 模式表示式 過剩Gibbs自由能模式表 示式 n n 定義新函數 Wilson 方程式
42 Chapter 6 Fugacities in liquid mixtures :Excess function n n 雙成份系統之 Wilson 方程 式活性係數表示式 Wilson 方程式的優異點
43 Chapter 6 Fugacities in liquid mixtures :Excess function n Wilson 方程式的優異點 n Wilson 方程式的缺憾點
45 Chapter 6 Fugacities in liquid mixtures :Excess function n 雙成份系統之 NRTL 方程 式活性係數表示式
47 Chapter 6 Fugacities in liquid mixtures :Excess function n 交互作用參數 UNIQUAC 模式的各成分活 性係數表示式 UNIQUAC 模式的優異點有 三:
50 Chapter 6 Fugacities in liquid mixtures :Excess function n 部分互溶相平衡行為的討 論 n 相行為變化的臨界點
51 Chapter 6 Fugacities in liquid mixtures :Excess function n 臨界不穩定的準據 n 用活性可以得到如下表示 式 n 遵守Raoult‘s Law 的理想 容易的過剩 Gibbs 自由能
53 Chapter 6 Fugacities in liquid mixtures :Excess function n 過剩函數參數的大小可判 定相行為穩定與否 n 圖解範例如次頁
54 Chapter 6 Fugacities in liquid mixtures :Excess function n 計算範例說明 n 四種醇類水溶液在室溫下 的的相圖
55 Chapter 6 Fugacities in liquid mixtures :Excess function n 最高與最低共熔溫度 n n Two-suffix Margules 方程 式適用系統的共熔溫度計 算式 四種雙成份系統的相平衡 行為
57 Chapter 6 Fugacities in liquid mixtures :Excess function 劇情如何發展? 下回分曉!
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