以阻力串聯模式分析中空纖維薄膜吸收二氧化碳之質量傳送

Mass transfer analysis on the hollow fiber membrane absorption of CO2 using the resistances-in-series model

薛奕珉(I-Min Hsueh)

指導教授 ： 莊瑞鑫

元智大學/工程學院/化學工程與材料科學學系/碩士(2008年)

https://doi.org/10.6838/YZU.2008.00079

摘要

本論文是以模擬方法討論二氧化碳在中空纖維模組收被液體吸收的情形；我們分別以水當作物理吸收劑，diethanolamine (DEA)作為化學吸收劑，由液體流動的方式分為回流以及非回流方式討論，在兩個流動系統中討論液體流速、氣體流速、DEA濃度對於二氧化碳通量的影響。
在物理吸收方面，模擬及實驗方面指出液體對於整體通量以及二氧化碳的去除率有較顯著的影響，液相的質傳阻力佔了較大的比例，相反的氣體流速對二氧化碳通過量就沒有明顯的影響；化學反應方面則與物理吸收相反，液體流速對於二氧化碳通量影響較小，氣體對通量的影響程度會隨著DEA濃度上升而上升。

關鍵字

質量傳送 ； 阻力串聯 ； 二氧化碳吸收

並列摘要

A theoretical simulation was performed to study CO2 capture by absorption in a hollowfiber membrane contactor. H2O and diethanolamine (DEA) solution were employed as physical and chemical absorbents. The effects of different operating conditions system, one pass and recycle on the removal behavior of CO2 were investigated. The result that we discuss in different gas velocity, liquid velocity and concentration of DEA.
In the case of physical absorption, both simulation and experimental results indicate that CO2 flux increases with the liquid velocity, while the inlet gas velocity has no significant effect on CO2 flux. The mass transfer resistance mainly exists on the liquid side. In the case of chemical absorption, the CO2 flux is significantly influenced by the inlet gas velocity, and the influence is increase with increase the concentration of DEA, while the liquid velocity has a limited effect.

並列關鍵字

mass transfer ； carbon dioxide absorption ； In-series model

參考文獻

吳慶鴻，”使用中空纖維模組去除二氧化碳氣體研究”， 淡江大學化學工程學系碩士論文(2005).

高向前，”非分散式萃取程序分離酸液中貴重金屬之質傳分析”， 元智大學化學工程學系博士論文(2006)

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