本論文分為兩大部份。第一部份為承襲前人之製程進行實驗分析。該製程為雙塔八步驟，共含進料加壓、高壓產氣、低壓抽氣、產物沖洗及產物回充等步驟。而本論文則對進料壓力、高壓產氣時間、沖洗時間、產氣回充時間及進料溫度等因素建立三個等級的全因子(full-factorial)實驗設計分析。 第二部分則以前人之製程進行改良，除了增加一個產氣塔之外也加入了一個儲氣塔，另外也對於製程之步驟進行改善，將原有的產物沖洗步驟取消，希望在符合無水酒精(99.5wt%)標準下能夠盡量提高酒精回收率。故本製程為三塔九步驟。本製程之實驗分析則是對進料壓力、進料溫度、抽氣壓力、高壓產氣時間及產氣回充時間進行三個等級之全因子實驗設計分析。 This thesis contains two parts。The first part is a Design of Experiment(DOE) of a two-bed-eight-step PSA process of dehydration ethanol from previous work of our group. Feed pressure, production time, purge time, backfill time and feed temperature are the factors of full factorial design of experiment. The process of second part comes from previous work of our group but some operating conditions had changed. Besides adding one adsorption bed to the process, a storage tank is also added。Expecting recovery could be increased by removing purge step and at the same time some operating conditions are also altered to keep ethanol purity at 99.5wt% which fits the goal of dehydration ethanol。The PSA process is a three-bed-nine step process. Feed pressure, feed temperature, vent pressure, production time and backfill time are chosen to do full factorial design factors of experimental design。
