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

• Prospective Technologies • Previous Articles     Next Articles

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 E-mail:shaohan_lian@163.com;song@tju.edu.cn

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

CLC Number: