理想系統之反應性分隔內壁蒸餾塔設計與節能研究

Abstract

反應性分隔內壁蒸餾塔為一項新式整合技術，將具有兩根塔以上之反應蒸餾系統，以分隔內壁觀念整合之，無論在設備成本與操作成本上，反應性分隔內壁蒸餾塔均有相當大的優勢。本文考慮可逆放熱反應A+B<=>C+D之四成份理想系統，並在Tung與Yu及Lin等人針對各種相對揮發度排序下之反應蒸餾系統設計中，採用其中6個雙塔架構，探討其在反應性分隔內壁蒸餾塔上之設計及特性。 本研究除了進行反應性分隔內壁蒸餾塔設計之模擬外，亦提出一項簡易且有效率的方法，在原有的反應蒸餾系統之最佳化條件下，預測出反應性分隔內壁蒸餾塔之節能效益，在理想系統之雙塔及三塔架構上驗證此方法之準確性，均顯示出相當好的結果。

Reactive dividing wall column (RDWC) is a novel thermal coupling technique in chemical engineering industry. For the reactive distillation system (RD system), which contains at least one reactive distillation column (RD) and one distillation column (DC), capital cost and energy consumption could be reduced by integrating the RD system to a RDWC. In this thesis, a reversible reaction ( ) was considered. For this reaction, Tung and Yu[47] and Lin et al.[31] proposed a series of RD system designs for different relative volatility rankings. Thus, we chose 6 two-column cases in these designs to discuss the characteristics of the RDWC. Besides the simulation work of the RDWC, we proposed a simple but powerful method to estimate the energy consumption of the RDWC by the results of the optimal RD system. In this work, two-column cases and three-column cases were taken to test the precision of this method. The calculation results demonstrated that the accuracy of this method is promising.