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<p>Natural gas is an important resource that ensures the energy supply and reduces CO<sub>2</sub> emissions simultaneously. However, many natural gases from well head contain a certain amount of acid gas, which must be removed to meet the pipeline requirement. Among the existing natural gas sweetening process, membrane technology is considered as a cost-effective, less energy intensive method that can remove both CO<sub>2</sub> and H<sub>2</sub>S simultaneously. The membranes with high permeability, high selectivity, and good durability are developing very fast. In this review, we summarized the latest state-of-the-art membranes investigated for H<sub>2</sub>S/CH<sub>4</sub> and CO<sub>2</sub>/CH<sub>4</sub> separation applications, including conventional polymer membranes, polyimides, polymer of intrinsic microporosity, rubber polymers, carbon molecular sieve membranes, hollow fiber membranes, and membrane processes for H<sub>2</sub>S and CO<sub>2</sub> removal from natural gas.</p>

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State-of-the-art polymeric membranes and polymer derived membranes for simultaneous CO2 and H2S removal from sour natural gas

  • 期刊论文

  • 发表日期：

    2025年3月25日

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  • Luxin Sun,
  • Qixuan Li,
  • Kunying Li,
  • Jiachen Chu,
  • Yongsheng Li,
  • Mengtao Wang,
  • Zan Chen,
  • Xiaohua Ma,
  • Shouliang Yi

摘要

Natural gas is an important resource that ensures the energy supply and reduces CO2 emissions simultaneously. However, many natural gases from well head contain a certain amount of acid gas, which must be removed to meet the pipeline requirement. Among the existing natural gas sweetening process, membrane technology is considered as a cost-effective, less energy intensive method that can remove both CO2 and H2S simultaneously. The membranes with high permeability, high selectivity, and good durability are developing very fast. In this review, we summarized the latest state-of-the-art membranes investigated for H2S/CH4 and CO2/CH4 separation applications, including conventional polymer membranes, polyimides, polymer of intrinsic microporosity, rubber polymers, carbon molecular sieve membranes, hollow fiber membranes, and membrane processes for H2S and CO2 removal from natural gas.