Absorption of carbon dioxide through hollow fiber membranes using various aqueous absorbents
Absorption of carbon dioxide through hollow fiber membranes using various aqueous absorbents
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DOI：
10.1016/s1383-5866(00)00195-7
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发表时间：
2000-11-01
影响因子：
8.6
通讯作者：
Yang, SM
中科院分区：
文献类型：
--
作者：
Kim, YS;Yang, SM
采用微孔膜吸收器分离二氧化碳-氮气混合物。所用膜由聚四氟乙烯(PTFE)制成，吸收剂包括不同种类的胺的水溶液。测定了膜组件的分离效率和二氧化碳的总传质系数，并考察了不同浓度和温度下膜组件的分离性能。在2-60℃的温度范围内测量了聚四氟乙烯中空纤维膜的吸收速率，发现二氧化碳的去除速率随着吸收剂体积流量的增加而增加。我们还进行了理论模型分析，以预测分离效率。结果表明，以胺水溶液为例，理论模型与实验观测结果吻合较好。(C)2000 Elsevier Science B.V.保留所有权利。
Microporous membrane absorbers were used for the separation of carbon dioxide-nitrogen mixtures. The membranes applied were made of polytetrafluoroethylene (PTFE) and the absorbents included aqueous solutions of different kinds of amines. We determined the separation efficiency and the overall mass transfer coefficient of carbon dioxide of the membrane modules, and evaluated the separation performance under different absorbent concentrations and temperatures. Absorption rates through the PTFE hollow fiber membranes were measured at temperatures ranging from 2 to 60 degreesC, and the removal rate of carbon dioxide was found to increase with the increase of the volumetric flow rate of an absorbent. We also conducted a theoretical model analysis to predict the separation efficiency. The results showed that the theoretical model agreed well with the experimental observation for the case of aqueous amine solutions. (C) 2000 Elsevier Science B.V. All rights reserved.