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標題Title: 應用滲透蒸發薄膜於異丙醇脫水之研究
作者Authors: 魏慶華,陳俊民..等
上傳單位Department: 機械工程系
上傳時間Date: 2009-11-16
上傳者Author: 魏慶華
審核單位Department: 機械工程系
審核老師Teacher: 魏慶華
檔案類型Categories: 研究生論文報告Thesis
關鍵詞Keyword: 滲透蒸發, Pervaporation Dehydration of Isopropyl Alcohol Membrane separation
摘要Abstract: This study investigated dehydration of Isopropyl Alcohol(IPA)by pervaporation with hydrophilic membrane. The process variables of pervaporation are: different IPA concentrations (75wt% and 85wt%, 90wt%), different temperatures (60℃, 70℃, 75℃, 80℃) of feed side, different pressures (33~117mm-Hg) of permeate side, and processing time (1~4hours). Static mode and circulated mode were performed for the dehydration tests on round membrane module or square membrane module. The assessment of dehydration effects were analyzed on total flux of materials transported through membrane, separation factor, pervaporation separation index (PSI), and activation energy.
Experimental results revealed, (1)The total flux was proportional to feed side temperature, and inversely proportional to feed side concentration, permeate side pressure, and processing time, (2) The less permeate side pressure was, the more total flux was affected, especially at low feed side concentration, (3) The separation factor ranks the highest at feed side temperature of 70℃, the lower at temperature of 60℃, the lowest at temperature of 75℃; however, separation factor is proportional to feed side concentration, especially when permeate side pressure is low, (4) The separation factor is inversely proportional to permeate side pressure, and is proportional to processing time, (5)PSI ranks the highest at feed side temperature of 70℃, and is apparently affected by feed side concentration; however, it is lower at feed side temperature of 60℃ or 75℃, and is not obviously affected by feed side concentration, (6) PSI is inversely proportional to permeate side pressure, while at low permeate side pressure, PSI is more obviously affected by feed side concentration, (7) At higher feed side concentration, the total flux can be more effectively increased by increasing temperature at feed side.

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2009_11_0a836856.pdf 612Kb pdf 795 582
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