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首页> 外文期刊>Separation and Purification Technology >Gas permeation properties of commercial polyphenylene oxide and Cardo-type polyimide hollow fiber membranes
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Gas permeation properties of commercial polyphenylene oxide and Cardo-type polyimide hollow fiber membranes

机译：商用聚苯醚和Cardo型聚酰亚胺中空纤维膜的透气性能

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摘要

Gas separation properties of commercially available polyphenylene oxide (PPO) and Cardo-type polyimide (PI) hollow fiber membranes were investigated by CO_2/CH_4 and O_2/N_2 separation experiments.The pure gas permeation and the mixed gas separation experiments indicated that the two hollow fiber membranes were suitable candidates for O_2/N_2 and CO2/CH4 separations.Average O_2/N_2 permselectivities of 3.9 and 5.7 for PPO and PI hollow fibers,respectively,average CO_2/CH_4 permselectivities of 16.4 and 36.0 for PPO and PI hollow fibers,respectively,CO_2 permeances of 210 and 110 GPU at 100 psig for PPO and PI hollow fibers,and O_2 permeances of 40 GPU and 15 GPU for PPO and PI hollow fibers were achieved.The CO_2/CH_4 mixture separation was carried out at three different CO_2 concentrations and three stage-cuts at 100 psig pressure.Separation factors of up to 21.1 and 7.5 for PI and PPO membranes,respectively,and permeances of up to 83 GPU and 140 GPU for PI and PPO,respectively were obtained.Furthermore,it was found that CO_2 permeance varied proportional to the ratio of stage-cut to feed concentration and it was observed that when the stage cuts were set equal to the concentrations of CO_2 in the feed (vol.%),the obtained separation factors were approximately equal.
机译：通过CO_2 / CH_4和O_2 / N_2分离实验研究了市售聚苯醚（PPO）和卡多型聚酰亚胺（PI）中空纤维膜的气体分离性能。纯净气体渗透和混合气体分离实验表明，两个中空纤维膜最适合用于O_2 / N_2和CO2 / CH4分离。PPO和PI中空纤维的平均O_2 / N_2渗透率分别为3.9和5.7，PPO和PI中空纤维的平均CO_2 / CH_4渗透率分别为16.4和36.0 ，PPO和PI中空纤维的CO_2渗透率分别为210和110 GPU在100 psig下，PPO和PI中空纤维的O_2渗透率分别为40 GPU和15 GPU。在三种不同的CO_2浓度下进行CO_2 / CH_4混合物分离PI膜和PPO膜的分离系数分别为21.1和7.5，PI和PPO的膜通透性分别为83 GPU和140 GPU。此外，发现CO 2的渗透率与阶段切割与进料浓度之比成比例变化，并且观察到当阶段切割设定为等于进料中CO 2的浓度（vol。％）时，分离因子大致相等。

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