本研究目的為探討各類共沸蒸餾程序之設計與控制，分別為三種常見之共沸蒸餾系統，非均勻相共沸蒸餾系統、均勻相共沸蒸餾系統也稱為萃取蒸餾系統、壓敏蒸餾系統。其中非均勻相共沸蒸餾系統有混合物不需加入共沸劑，與混合物需加入共沸劑幫助分離的系統。混合物不需加入共沸劑，針對甲基丙烯酸甲酯-甲醇-水混合物系統在非均勻相共沸蒸餾製程中分離，由於在靜置下甲基丙烯酸甲酯與水會自動分相，故不需加入共沸劑幫助分離。混合物加入共沸劑針對二氧陸圜去水系統進行討論其中又分為兩種共沸劑，第一種為乙酸乙酯、第二種為苯做為共沸劑，加入共沸劑後，會與水形成一非均勻相最小共沸點，利用兩塔架構在非均勻蒸餾系統中分離。其中二氧陸圜去水系統又包括壓敏蒸餾系統，利用二氧陸圜與水共沸組成對壓力變化的影響來進行分離，使用兩塔操作於不同壓力之架構進行分離程序。最後是丙二醇甲醚去水系統，使用均勻相共沸蒸餾系統與非均勻相共沸蒸餾系統進行比較，使用環丁碸作為萃取劑，採用兩塔架構進行分離丙二醇甲醚與水。上述三系統，利用最適化搜尋，尋找成本最小之最適化穩態設計，論文中另以符合實際工廠使用的控制策略，從動態上測試其排除干擾的能力。

The design and control of three dehydration process system via azeotropic distillation will be investigated in this thesis. In azeotropic distillation system that commonly divide into three parts, heterogeneous azeotropic distillation, homogeneous azeotropic distillation and pressure swing distillation. First in the heterogeneous azeotropic distillation system considers a flowsheet for the separation of the 1,4 - Dioxane/water azeotropes that comparing Ethyl acetate and Benzene as entrainer. Also use pressure swing distillation system to separate this azeotropes. Second system is using heterogeneous azeotropic distillation system to separate Methyl methacrylate (MMA)/methanol/water. Design with two columns and a decanter or design with a single column with side flow and a decanter are used. The final system is to study a homogeneous azeotropic distillation column system for the separation of Propylene Glycol Monomethyl Ether (PM) and water using Sulfolane as entrainer. The proposed flowsheet should be a two-column system which contains a extractive distillation column and a entrainer recovery distillation column.
The optimal design flowsheet has been established for the above three system by minimizing Total Annual Cost (TAC) of the design flowsheet. A very simple overall control strategy has also been proposed for the above systems which requires only one tray temperature control loop in each column to hold the high-purity specifications of the products.

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