本研究使用多孔性聚乙烯疏水材質之中空纖維模組探討利用單乙醇胺水溶液吸收二氧化碳氣體之性能。本研究建立了一個考慮非平衡與平衡反應及熱質傳，並使用electrolyte-NRTL熱力模式之嚴謹模式用以決定化學吸收之加強因子，並透過最小化實驗與模式預測結果差異之方法，回歸出適用於本實驗模組之殼側質傳係數關聯式與兩實驗模組之有效界面面積。薄膜內部份濕潤之概念無法解釋本實驗模組之吸收性能，有效界面面積則可有效回歸模式與實驗結果。吸收效率主要受進氣流量及吸收液溫度之影響。質傳阻力主要在氣相。針對燃煤與燃天然氣煙道氣之處理，進氣流量之提高主要須透過模組長度之調整使達要求之去除效率。

The performance of carbon dioxide absorption by aqueous monoethanolamine solution is investigated via both experiments and a rigorous mathematical model. Two different size microporous polyproplyene hollow fiber membrane modules are used for experiments. The rigorous mathematical model considers the complex chemical absorption mechanism, including kinetic and equilibrium reactions, and heat and mass transports. Incorporating the experimental results with the mathematical model allows the determination of the correlation for shell side mass transfer coefficient as well as the effective interfacial areas of two modules. The concept of partial wetting inside membrane cannot explain the performance of the experimental modules. The most significant operating conditions affecting the absorption efficiency are the inlet gas flow rate and absorbent temperature. The major mass transfer resistance occurs in the gas side. For the coal-fired and natural gas-fired flue gas treatment, the required module length for different inlet gas flow rate is analyzed.

目錄

中文摘要	……………………………………………………………..…i
英文摘要	…………………………………………………………….…ii
目錄	………………………………………………………………iii
圖目錄	………………………………………………………………vi
表目錄	.………………………………………………………...…...xii 
第一章	前言……………………………………………………….…1
第二章	文獻回顧………………………………………………….…5
2.1	薄膜吸收二氧化碳……………………………………...….5
2.2	醇胺吸收二氧化碳速率模式………………………………7
第三章	實驗系統…………………………………………………...10
3.1	實驗藥品與裝置圖………………………………………...10
3.1.1	實驗藥品…………………………………………………...10
3.1.2	實驗設備…………………………………………………...10
3.1.3	實驗裝置圖………………………………………………...15
3.2	實驗方法…………………………………………………...17
3.3	實驗步驟…………………………………………………...18
3.4	實驗結果……………………………………………...……20
第四章	模式建立………………………………………………...…23
4.1	化學反應…………………………………………………...23
4.1.1	非平衡反應………………………………………………...23
4.1.2	平衡反應…………………………………………….......…24
4.2	薄膜模組氣體吸收模式………………………………...…25
4.2.1	點模式……………………………………………………...25
4.2.2	熱傳通量…………………………...………………………30
4.2.3	質量與能量平衡……………………...……………………30
4.3	輸送與熱力性質………………………...…………………31
4.3.1	熱力學模式……………………………...…………………31
4.3.2	亨利常數…………………………………...………………31
4.3.3	氣、液相及薄膜內擴散係數………………………………32
4.3.4	氣、液相及膜內質傳係數…………………………………34
4.3.5	氣、液相及膜內熱傳係數…………………………………35
4.3.6	氣、液相及膜內熱傳導係數………………………………36
4.3.7	其他物理性質……………………………………………...36
4.4	程式架構與數值解析方法………………………………...37
第五章	模式參數決定……………………………………………...39
5.1	前言………………………………………………………...39
5.2	回歸方法…………………………………………………...41
5.3	回歸結果…………………………………………………...41
第六章	系統性能與特性分析……………………………………...45
6.1	操作條件之影響………………………………………...…46
6.2	模組內部質傳特性………………………………………...51
6.2.1	質傳係數之影響……………………………………...……51
6.2.2	質傳阻力分佈……………………………………………...54
6.3	薄膜濕潤比率之影響……………………………………...55
第七章	系統設計…………………………………………………...59
第八章	結論………………………………………………………...62
參考文獻	……………………………………………………………...64
符號說明	…………………………………………………………...…68
附錄A	熱力模式參數……………………………………………...71
附錄B	基本個案模組內特性分析………………………………...76





圖目錄

圖3-1	中空纖維模組，模組1………………………….………11
圖3-2	中空纖維模組，模組2…………………………….……12
圖3-3	氣體混合器……………………………………………...13
圖3-4	氣體過濾器……………………………………………...13
圖3-5	CO2氣體濃度分析儀……………………………………14
圖3-6	液體幫浦………………………………………………...14
圖3-7	氣體流量計………………………………………...……15
圖3-8	中空纖維模組去除二氧化碳氣體實驗設備圖……...…15
圖3-9	中空纖維模組去除二氧化碳氣體實驗裝置圖……...…16
圖4-1	薄膜吸收器中第n段之物流進出示意圖………………28
圖4-2	程式架構圖……………………………………………...38
圖5-1	實驗與模擬之吸收效率（模組1）………………………42
圖5-2	實驗與模擬之出口濃度（模組1）………………………43
圖5-3	實驗與模擬之吸收效率（模組2）………………………43
圖5-4	實驗與模擬之出口濃度（模組2）………………………44
圖6-1	各變數對吸收效率之影響（模組1）……..……………47
圖6-2	各變數對吸收效率之影響（模組2）…………….……47
圖6-3	各變數對出口濃度之影響（模組1）……………….…48
圖6-4	各變數對出口濃度之影響（模組2）………….………48
圖6-5	各變數對加強因子之影響（模組1）…………….……49
圖6-6	各變數對加強因子之影響（模組2）………………….49
圖6-7	各變數對總液相質傳係數之影響（模組1）……………50
圖6-8	各變數對總液相質傳係數之影響（模組2）……………50
圖6-9	氣相質傳係數kG對吸收效率之影響（模組1）…………51
圖6-10	氣相質傳係數kG對吸收效率之影響（模組2）…………52
圖6-11	液相質傳係數kL對吸收效率的影響（模組1）…………52
圖6-12	液相質傳係數kL對吸收效率的影響（模組2）…………53
圖6-13	薄膜質傳係數kM對吸收效率的影響（模組1）…………53
圖6-14	薄膜質傳係數kM對吸收效率的影響（模組2）…………54
圖6-15	XL對吸收效率之影響（模組1）………………………55
圖6-16	XL對吸收效率之影響（模組2）………………………56
圖6-17	XL對總液相質傳係數之影響（模組1）………………56
圖6-18	XL對總液相質傳係數之影響（模組2）………………57
圖6-19	XL對加強因子之影響（模組1）………………………57
圖6-20	XL對加強因子之影響（模組2）………………………58
圖7-1	氣體流量對模組長度之影響（燃煤煙道氣）………....61
圖7-2	氣體流量對模組長度之影響（燃天然氣煙道氣）……...61
圖B-1	模組中溫度分佈圖……………………………………...76
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-2	模組中氣體流量分佈圖………………………………...76
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-3	模組中氣體濃度分佈圖………………………………...77
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-4	液相中CO2總濃度分佈圖………………………………77
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-5	模組中加強因子分佈圖……………………………..…78
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-6	模組中質傳通量分佈圖………………………...………78
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-7	模組中熱傳通量分佈圖………………………...………79
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-8	模組中溫度分佈圖……………………………………...79
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-9	模組中氣體流量分佈圖………………………………...80
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-10	模組中氣體濃度分佈圖……………………………..…80
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-11	液相中CO2總濃度分佈圖………………………………81
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-12	模組中加強因子分佈圖………………………………...81
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-13	模組中質傳通量分佈圖……………………………...…82
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-14	模組中熱傳通量分佈圖………………………………..82
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-15	模組中溫度分佈圖……………………………………...83
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-16	模組中氣體流量分佈圖………………………………...83
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-17	模組中氣體濃度分佈圖………………………………..84
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-18	液相中CO2總濃度分佈圖………………………………84
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
	
圖B-19	模組中加強因子分佈圖………………………………...85
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-20	模組中質傳通量分佈圖………………………………...85
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-21	模組中熱傳通量分佈圖………………………………..86
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-22	模組中溫度分佈圖……………………………………..86
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-23	模組中氣體流量分佈圖………………………………..87
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-24	模組中氣體濃度分佈圖………………………………..87
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-25	液相中CO2總濃度分佈圖………………………………88
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-26	模組中加強因子分佈圖………………………………...88
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
圖B-27	模組中質傳通量分佈圖………………………………..89
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
	
圖B-28	模組中熱傳通量分佈圖………………………………..89
（base case：Module1，T_in=1atm，GF_in=25㏄/s，LF_in=5㏄/s，YbCO2_in=0.0426，WF_MEA=20wt％，α=0.2）
	

















表目錄

表3-1	實驗操作條件之範圍…………………………………...17
表4-1	速率常數………………………………………………...24
表4-2	平衡常數………………………………………………...25
表4-3	水溶液系統密度之參數………………………………...37
表5.1	殼側之個別質傳係數預測關聯式……………………...40
表5.2	回歸結果………………………………….......................42
表6-1	基本個案之操作條件設定……………………………...45
表7-1	燃燒煤炭與天然氣所生成廢氣之條件………………...59
表7-2	中空纖維模組設定條件………………………………...60
表7-3	基本個案之操作條件設定……………………………...60
表A-1	Dielectric constant……………………………………….74
表A-2	Energy parameter………………………………………...75
表A-3	Nonrandomness factor…………………………………...75

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