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Highly Selective and Hydrocarbon-Resistant Polyimide Hollow Fiber Membranes for Helium Recovery from Natural Gas
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-12-13 , DOI: 10.1021/acs.iecr.2c03907 Lu Liu 1, 2, 3 , Qi Wu 1, 2, 3 , Shunli Wang 3 , Wei Lai 2, 3 , Peijun Zheng 3 , Can Wang 1, 2, 3 , Xin Wei 4 , Shuangjiang Luo 3
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-12-13 , DOI: 10.1021/acs.iecr.2c03907 Lu Liu 1, 2, 3 , Qi Wu 1, 2, 3 , Shunli Wang 3 , Wei Lai 2, 3 , Peijun Zheng 3 , Can Wang 1, 2, 3 , Xin Wei 4 , Shuangjiang Luo 3
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The recovery of helium from natural gas using membranes has attracted substantial attention, while very limited polymers were spun into hollow fibers and evaluated for realistic helium recovery. This work demonstrates the successful preparation of asymmetric and highly helium-selective hollow fiber membranes for the enrichment of helium from natural gas. A novel, aromatic copolyimide was designed and fabricated into hollow fiber membranes (HFMs) via the dry-jet/wet-quench spinning approach. The as-prepared HFMs display a He permeance of 85 GPU and high He-related gas selectivities of 140, 204, 448, and 609 for He/N2, He/CH4, He/C2H6, and He/C3H8 gas pairs, respectively. Particularly, ternary and quaternary mixed-gas permeation results reveal excellent light and heavy hydrocarbon resistance due to the competition between plasticization and gas sorption. The HFMs also demonstrated superior low-temperature gas separation performance and outstanding membrane gas separation stability, rendering them attractive for helium recovery.
中文翻译：
用于从天然气中回收氦气的高选择性和耐烃聚酰亚胺中空纤维膜
使用膜从天然气中回收氦气引起了广泛关注，同时将非常有限的聚合物纺成中空纤维并评估了实际的氦气回收率。这项工作证明了不对称和高氦选择性中空纤维膜的成功制备，用于从天然气中富集氦。设计了一种新型芳香族共聚酰亚胺，并通过干喷/湿淬纺方法将其制成中空纤维膜 (HFM) 。所制备的 HFM 显示 85 GPU 的 He 渗透率和 140、204、448 和 609 的 He/N 2、He/CH 4、He/C 2 H 6和 He/C的高 He 相关气体选择性3小时8气体对，分别。特别是，由于塑化和气体吸附之间的竞争，三元和四元混合气体渗透结果显示出优异的轻烃和重烃阻力。HFMs 还展示了卓越的低温气体分离性能和出色的膜气体分离稳定性，使它们在氦气回收方面具有吸引力。
更新日期：2022-12-13
中文翻译：
用于从天然气中回收氦气的高选择性和耐烃聚酰亚胺中空纤维膜
使用膜从天然气中回收氦气引起了广泛关注，同时将非常有限的聚合物纺成中空纤维并评估了实际的氦气回收率。这项工作证明了不对称和高氦选择性中空纤维膜的成功制备，用于从天然气中富集氦。设计了一种新型芳香族共聚酰亚胺，并通过干喷/湿淬纺方法将其制成中空纤维膜 (HFM) 。所制备的 HFM 显示 85 GPU 的 He 渗透率和 140、204、448 和 609 的 He/N 2、He/CH 4、He/C 2 H 6和 He/C的高 He 相关气体选择性3小时8气体对，分别。特别是，由于塑化和气体吸附之间的竞争，三元和四元混合气体渗透结果显示出优异的轻烃和重烃阻力。HFMs 还展示了卓越的低温气体分离性能和出色的膜气体分离稳定性，使它们在氦气回收方面具有吸引力。
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