- 學位論文
丙酮-甲醇-水之批次萃取蒸餾塔視窗程式設計
Windows Programming of Batch Extractive Distillation Column for Acetone-Methanol-Water System
摘要
萃取蒸餾是指在蒸餾過程中加入第三成份以提高共沸混合物的相對揮發度，破壞原本的平衡，達到分離純化的效果。本研究希望利用電腦模擬出一座以水為夾帶劑，用以分離丙酮-甲醇的批次萃取蒸餾塔。利用改變總板數、夾帶劑連續進料的流量、位置以及產物回流比，探討不同情形下對產物的收集量及濃度有何影響。 程式的構造是先計算出各板層的莫耳積存量，再依照儲槽、夾帶劑進料板，一般蒸餾板不同之質量、能量以及NRTL的平衡關係式，建立出個別的副程式模組。利用Visual Basic 2005將各板層副程式加以整合，求出所需之結果，最後以人性化的視窗模式呈現，只需輸入初始值，便可利用電腦求出結果，利於操作及學習之用。 由模擬結果得知，夾帶劑進料位置對於萃取的效果有很大的影響；在出料方面，回流比的大小會影響到總產物的收集情形，故本模擬程式可提供使用者進一步做控制策略與研究之用。
並列摘要
Entrainer was added to a distillation column to increase the relative volatility of mixtures, and then the mixtures can be separated by normal distillation. This research developed a windows simulation program of batch extract distillation column which water was used as the entertainer to separate acetone and methanol. By changing reboiler duty, flow rate of entrainer, reflux ratio, learner can study the optimal operation of batch extractive distillation. This research was to develop program with solving the mass balance, energy balance and phase equilibrium equations of the different operation units and then construct them to be a series of subroutine models. Visual Basic was used to develop the operating interface. By virtue of this simulation results, the steady state value of simulation program is similar by calculated. The dynamic response is also reasonable, therefore this simulation program can be provided for further studies and research of control strategy.