中空纤维膜
吸收(声学)
二氧化碳
水溶液
蒸馏水
膜
材料科学
化学工程
体积流量
焊剂(冶金)
化学
纤维
传质
色谱法
有机化学
热力学
复合材料
生物化学
工程类
物理
作者
Yanwen Gong,Zhi Wang,Shichang Wang
标识
DOI:10.1016/j.cep.2006.01.009
摘要
The absorption of carbon dioxide from nitrogen–carbon dioxide mixture was investigated in a hollow fiber membrane module using methyldiethanolamine/monoethanolamine (MDEA/MEA) aqueous solutions and distilled water. The experimental results showed that both the CO2 absorption flux and fractional removal increased with increasing content of MEA in mixed amines and increasing liquid flow rate. For the non-wetted operation mode, a mathematical model to simulate the behavior of CO2 removal by mixed amines in hollow fiber modules was developed and solved. The simulation results agreed well with the experimental data. Moreover, approximate solution using conventional mass transfer models also validates the availability of the mathematical model. Theoretical results also indicate the depletion of MEA is much greater than that of MDEA during the CO2 absorbed in mixed amines.
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