本研究介紹反應蒸餾系統產生碳酸二乙酯及甲醇，為碳酸二甲酯
和乙醇的轉酯化反應產物。系統中的動力學模式利用論文(Mueller
and Kenig, 2007) 中所提出的模式，熱力學參數利用ASPEN PLUS 參
數回歸去描述獲得。
本研究中最適化程序設計及操作成本，利用年度總成本(TAC)搜
尋獲得。最適化結果為，操作在乙醇及碳酸二甲酯進料比率為8：1
時，反應蒸餾塔總板數為39 板，碳酸二甲酯進料位置在第29 板，乙
醇進料位置在第9 板時為最適化穩態設計。反應蒸餾塔精餾段出料為
包含甲醇及乙醇的混合流，本研究將分離混合流中的乙醇，由於乙醇
可回收至反應蒸餾塔中再利用。
分離乙醇及甲醇混合流，比較簡單蒸餾塔及萃取蒸餾塔，由結果
可知，簡單蒸餾塔所需要的年度總成本(TAC)，相較於利用間二甲苯
(m-xylene)為萃取劑萃之萃取蒸餾塔要更低。

optimal condition is reached by 8:1 feed
ratio of EtOH : DMC, 39 total trays of distillation column, feed location of dimethyl
carbonate (DMC) at 29th stage and feed location of ethanol (EtOH) at 9th stage. Since
the distillate of the reactive distillation column is a mixture of ethanol and methanol,
further study to separate this mixture is required in order to recover the EtOH for
reaction. Comparison between simple distillation and extractive distillation to separate
EtOH/MeOH mixture was made. Simple distillation was found to have smaller TAC
than the extractive distillation using m-xylene as entrainer.

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