华电技术 ›› 2021, Vol. 43 ›› Issue (11): 128-137.doi: 10.3969/j.issn.1674-1951.2021.11.014

• 未来技术 • 上一篇    下一篇

复合膜在CO2分离领域的研究进展

连少翰1(), 李润1, 张泽洲1, 刘庆岭1, 韩瑞1, 赵军2, 宋春风1,*()   

  1. 1.天津大学 环境科学与工程学院,天津 300350
    2.天津大学 中低温热能高效利用教育部重点实验室,天津 300350
  • 收稿日期:2021-07-27 修回日期:2021-09-28 出版日期:2021-11-25 发布日期:2021-11-16
  • 通讯作者: 宋春风
  • 作者简介:连少翰(1993—),男,河北邢台人,在读博士研究生,从事CO2分离膜材料的研发工作(E-mail: shaohan_lian@163.com)。
  • 基金资助:
    国家重点研发计划“政府间国际科技创新合作/港澳台科技创新合作”重点专项资助项目(2017YFE0127200);国家自然科学基金项目(21878228);天津市研究生科研创新项目(2020YJSB046)

Advances of composite membranes in CO2 separation

LIAN Shaohan1(), LI Run1, ZHANG Zezhou1, LIU Qingling1, HAN Rui1, ZHAO Jun2, SONG Chunfeng1,*()   

  1. 1. School of Environmental Science & Engineering, Tianjin University, Tianjin 300350, China
    2. Key Laboratory of Efficient Utilization of Low and Medium Grade Energy(Tianjin University),MOE, Tianjin 300350, China
  • Received:2021-07-27 Revised:2021-09-28 Online:2021-11-25 Published:2021-11-16
  • Contact: SONG Chunfeng

摘要:

为实现“双碳”目标,应积极发展CO2捕集、封存与资源化利用(CCUS)技术,控制CO2的排放。膜分离技术作为最常见的气体分离技术之一,相比于吸收法、吸附法、低温法等,具有能耗低、便于操作、占地面积小、易于放大、运行成本低等优点,被广泛用于燃煤电厂烟气CO2捕集与天然气脱碳纯化等工艺。然而纯无机膜与高分子膜受制于各自的缺点,无法大规模推广应用,开发气体分离性能优越的复合膜成为研究的热点。综述了国内外关于复合膜在CO2捕集领域的研究进展,以膜结构类型进行分类,重点介绍了混合基质膜、支撑液膜等不同复合膜的制备过程及原理。对比了不同复合膜的分离表现,对其优缺点进行了总结,并对制约复合膜发展的关键问题进行了分析讨论。最后,展望了复合膜气体分离技术未来的发展方向。

关键词: 碳中和, CO2捕集、封存与利用, 膜分离, 混合基质膜, 支撑膜, 离子液体, 碳酸酐酶

Abstract:

In order to achieve carbon peak and carbon neutrality, it is necessary to develop CO2 capture, storage and resource utilization (CCUS) technology to control CO2 emissions. As one of the most common gas separation technologies, membrane-based separation has been widely used in the CO2 capture of flue gas from power plants and the purification of natural gas. It has the advantages of low energy consumption, easy operation, small site area, easy expansion and low operating costs,compared to absorption, adsorption and cryogenic methods. However, pure inorganic membranes and polymer membranes can hardly be used in large-scale applications for their own shortcomings. The development of composite membranes with superior gas separation performance has become the hotspot.The research progress of composite membranes on CO2 capture was reviewed. Being sorted by their structures,composite membranes include mixed-matrix membranes and supported liquid membranes. The separation performances of different composite membranes were compared. Based on their advantages and disadvantages,the key issues restricting the development of composite membranes were analyzed and discussed. Finally, the development direction of composite membrane-based gas separation technology was also prospected.

Key words: carbon neutrality, CCUS, membrane-based separation, mixed-matrix membrane, supported liquid membrane, ionic liquid, carbonic anhydrase

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