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The Optimal Process Design of Propylene Glycol Monomethyl Ether
|關鍵字:||propylene glycol monomethyl ether|
total annual cost
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|摘要:||本研究利用模擬軟體Aspen plus對光阻稀釋劑進行純化而得丙二醇甲醚(propylene glycol monomethyl ether,PM)再回收利用於工業上，進行純化之製程模擬與設計層面探討。首先選擇合適的熱力學模式，由於本論文是許多成分的非理想系統，故熱力學模式選擇液相活性係數法中的NRTL與Hayden-O’Connell狀態方程式來做運算更能貼近真實情況。在此模擬系統過程中，是以平衡板(equilibrium stage)的概念假設各平衡板之汽相與液相的流動均達到熱力學相平衡。並提出了兩個純化系統架構，其中蒸餾塔(1)用於脫水，蒸餾塔(2)用於純化丙二醇甲醚與丙二醇甲醚醋酸酯。
使得整體蒸餾程序一天可得30頓丙二醇甲醚且濃度高於99.7%以上，使之具有超高潔淨純度及超低水分之電子級丙二醇甲醚。並同時更改內部規格ex:總塔板、進料位置、進料流率來探討最小年度總成本(Total Annual Cost,TAC)，以進行優化設計。|
This study comprises the design of distillation processes for solvent recycling with Aspen Plus. Propylene glycol monomethyl ether (PM) is separable from thinner by distillation. Raw material includes alcohol, ethers and esters.This study comprises the design of distillation processes for solvent recycling with Aspen Plus. Propylene glycolmonomethyl ether (PM) is separable from thinner by distillation. Raw material includes alcohol, ethers and esters. NRTL activity coefficient and Hayden-O’Connell state equation are chosen to model the real situation with good accuracy. In this simulation system two distillation columns are employed. The first distillation columns is designed to remove water and the second distillation columns is used to separate PM and propylene glycol monomethyl ether acetate (PMA) This process produces PM higher than 99.7% in mass composition and 30 tons a day in capability. High purity of PM finds its application in cleaner of electronic material. This study is aiming at optimizing the design. Design parameters includes the number of tray, the feed tray locations and feed flow rates based on the total annual cost (TAC).
|Appears in Collections:||化學工程學系所|
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