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›› 2010, Vol. 10 ›› Issue (2): 395-399.

• 材料工程专栏 • 上一篇    下一篇

不同中空纤维膜组件对甲烷和氧气无泡曝气过程的影响

段长虹 罗明芳 杨程 江皓 邢新会   

  1. 中国科学院研究生院材料科学与光电技术学院 中国科学院研究生院化学与化学工程学院 清华大学化学工程系 清华大学化学工程系 清华大学化工系生物化工研究所
  • 收稿日期:2010-01-25 修回日期:2010-02-23 出版日期:2010-04-20 发布日期:2010-04-20
  • 通讯作者: 罗明芳

Effects of Different Hollow Fiber Membrane Modules on Bubbleless Aeration of Methane and Oxygen

DUAN Chang-hong LUO Ming-fang YANG Cheng JIANG Hao YANG Cheng   

  1. College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences College of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences Department of Chemical Engineering, Tsinghua University Department of Chemical Engineering, Tsinghua University Department of Chemical Engineering, Tsinghua University
  • Received:2010-01-25 Revised:2010-02-23 Online:2010-04-20 Published:2010-04-20
  • Contact: LUO Ming-fang

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被引次数

5

摘要： 为探索无泡膜曝气用于甲烷高效、安全生物转化的可能性, 测试了3种中空纤维膜组件对甲烷和氧气传质速率的影响. 所测膜组件分别为致密硅胶中空纤维膜(A)、疏水性微孔聚丙烯中空纤维膜(B)及亲水性微孔聚醚砜中空纤维膜(C). 结果表明，膜组件A和B可以同时强化甲烷和氧气的气液传质过程，对甲烷进行无泡曝气，两者的体积甲烷传质系数(KLa)相近，分别为3.19和3.78 h-1，约为传统鼓泡曝气的3倍. 对空气进行无泡曝气时，膜组件B的KLa值(溶氧)为61.1 h-1，是A的2.6倍，是传统鼓泡曝气的24.8倍.

关键词: 甲烷, 气液传质, 无泡曝气, 氧气, 中空纤维膜

Abstract: To explore the possibility of bubble-free membrane aeration in the biotransfer of methane safely and efficiently, the effects of hollow fiber membrane modules on the mass transfer rates of methane and oxygen were examined in this work. Three membrane modules, dense silicone membrane (A), hydrophobic microporous polypropylene membrane (B), and hydrophilic microporous poly(ether sulfone) membrane (C), were investigated. The investigation results show that the gas-liquid mass transfer rates of methane and oxygen can be improved significantly for modules A and B. For the bubbleless aeration of methane (for the case that methane is bubbleless aerated), the volumetric mass transfer coefficients (KLa) of methane for modules A and B are 3.19 and 3.78 h-1, respectively, which are 3 times of that for the conventional bubble aeration. For the bubbleless aeration of air (for the case that air is bubbleless aerated), KLa of oxygen for module B is 61.1 h-1, which is 2.6 times of that for module A and 24.8 times of that for the conventional bubble aeration.

Key words: methane, gas-liquid mass transfer, bubble-free aeration, oxygen, hollow fiber membrane

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