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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/115941

    Title: 二氧化碳薄膜吸收膜組設計之數學理論與實驗分析
    Other Titles: Theoretical and Experimental Studies of Carbon Dioxide Absorption through Membrane Contactors
    Authors: 何啟東;陳俊成
    Keywords: 二氧化碳吸收;薄膜吸收;醇胺;溝渠式平板型;中空纖維膜組;螺旋式套管
    Date: 2017-08
    Issue Date: 2019-03-09 12:12:04 (UTC+8)
    Abstract: 針對環境氣候變遷,溫室效應影響逐漸嚴重的情況下,節能減碳是目前各國專家學者的共識,為了達到聯合國訂定的預期減碳目標 [1-4],本研究利用醇胺之化性,建構二氧化碳/醇胺之薄膜吸收系統,針對不同模組系統之實驗操作,並建構數學理論的研究,找出最適化的薄膜模組設計之操作變因,以求得較佳的二氧化碳吸收效率。本研究的操作模組包括(1)平板型及套管型;(2)溝渠式平板型;(3)中空

    The sequestration of carbon dioxide (CO2) emitted from industrial flue gas streams is one of important measures to stabilize greenhouse gas concentrations in the atmosphere to fulfill the objective of UNFCCC. This project proposes an integrated system that utilizes membrane contactors for gas absorption in
    aiming to accomplish CO2 capture. The absorption efficiency of CO2 in ethanolamine (MEA) solvent system of a parallel-plate membrane contactor with both concurrent- and countercurrent-flow operations was investigated theoretically and experimentally to predict concentration distributions, mass transfer coefficient and gas absorption rates. A two-dimensional mathematical modeling for predicting the concentration distribution and total absorption rate was developed, and the analytical solution for the resultant partial differential equations is obtained using the separated variables method with an orthogonal expansion technique. An experimental system with CO2/N2 gas mixture and Amine solutions as absorbents divided with a PTFE (Polytetrafluoroethylene) membrane system is used as the gas absorption membrane modules to conduct CO2 absorption performance tests. The theoretical predictions of the absorption efficiency, total
    absorption rate, average Sherwood number and concentration distributions were presented graphically with the mass-transfer Graetz number, inlet CO2 concentration, and both gas feed and absorbent flow rates as parameters. Four types of membrane cartridges, namely the parallel-plate module, parallel-plate module with carbon-fiber channel, hollow fiber module and spiral helix, were proposed in the present study to conduct the CO2 absorption performances in each individual design of the membrane contactor systems. Moreover, the operating and designing parameters that affect the CO2 absorption performance will be investigated to conclude a set of optimal operating conditions for the proposed gas-liquid membrane contactor systems.
    Relation: 二氧化碳薄膜吸收模組設計之數學理論與實驗分析
    Appears in Collections:[Graduate Institute & Department of Chemical and Materials Engineering] Research Paper

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