English  |  正體中文  |  简体中文  |  Items with full text/Total items : 59681/92958 (64%)
Visitors : 825995      Online Users : 48
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/77444

    Title: 多行程順流式回流薄膜萃取器中質量傳送之改良型修正因子分析
    Other Titles: Recycled membrane extraction in multipass cocurrent-flow rectangular modules with modified correction-factor analysis
    Authors: 廖偉倫;Liao, Wei-Lun
    Contributors: 淡江大學化學工程與材料工程學系碩士班
    葉和明;Yeh, Ho-Ming
    Keywords: 薄膜萃取;多行程操作;外回流;並流;改良型修正因子;Membrane extraction;multipass operation;External Recycle;Parallel flow;modified correction-factor analysis
    Date: 2012
    Issue Date: 2012-06-21 06:43:44 (UTC+8)
    Abstract: 過去研究中可知,薄膜萃取器的質量傳送理論可類比於熱交換器的熱量傳送理論,因此我們利用熱交換器理論架構來進行質量傳送系統的理論推導。本研究乃探討具回流裝置之薄膜萃取器中的質量傳送,主要針對其萃取速率計算公式中的修正因子圖表作適當的改良並分析多行程與回流對萃取器效率之影響。有別於傳統型修正因子在計算萃取速率的過程中,需經過繁雜的疊代,而我們分別對單行程、雙行程、三行程、四行程四種具回流裝置的萃取系統,利用其體積流率、質傳面積、分配係數、整體質傳係數及回流比等參數,定義並繪製出方便使用的改良型修正因子圖表,配合改良後的質傳公式,萃取速率便能很快地求出。
    The modified correction-factor analysis for recycled membrane extraction in parallel-flow multipass rectangular devices was introduced in the present study, and the expressions of mass-transfer rate and modified correction-factor charts thus derived, are explicit. Unlike the conventional correction-factor analysis, the results can be readily calculated without using try-and-error method. The correction factors as the function of flow rate, mass-transfer-area, distribution coefficient and overall mass-transfer coefficient for recycled multipass operations are plotted in the modified correction-factor charts,. Experimental results confirm the predicted values for the extraction of acetic acid from aqueous solution by methyl isobutyl ketone in the double-pass device.
    Appears in Collections:[Graduate Institute & Department of Chemical and Materials Engineering] Thesis

    Files in This Item:

    File SizeFormat

    All items in 機構典藏 are protected by copyright, with all rights reserved.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - Feedback