Research status of amine aerosol formation and emission in amine carbon capture process
Journal Title: Energy Environmental Protection - Year 2023, Vol 37, Issue 3
Abstract
Post-combustion CO_2 absorption by amine has great potential for large-scale carbon capture and industrial promotion. However, in the process of efficiently absorbing CO_2, part of the absorbers will leave the carbon capture system in the form of aerosol along with the flue gas, which will not only lead to abnormal operation of the equipment but also cause environmental pollution. Therefore, the emission control of amine aerosol has become a new issue to be solved urgently in the industrial promotion of amine carbon capture. However, the amine carbon capture is still in the demonstration stage. Although attention has been paid to the emission control of amine aerosols at home and abroad, the formation and evolution of amine aerosols is a complex process affected by many factors such as absorption parameters and flue gas components. The actual emission of amine aerosols is quite different, which poses a challenge for the development of efficient and low-cost control technology and the establishment of emission limits. This paper introduces the significance of heterogeneous nuclei in heterogeneous nucleation of amine aerosols. The test methods of amine aerosol concentration and size are summarized. The emission of amine aerosols measured by different research institutions are compared. The size distribution characteristics of amine aerosols under different heterogeneous nuclei are determined. The effects of heterogeneous nuclei, CO2 concentration, lean liquid temperature and solvent load on the formation and emission of amine aerosols are analyzed. Finally, the advantages and disadvantages of three types of amine emission control technologies, such as condensation pretreatment, in-tower regulation and efficient tail control, are summarized. In the future, the emission control of amine aerosols in amine carbon capture system should be integrated into the whole process of pollution reduction and carbon reduction, from reducing the formation of amine aerosols to promoting the aggregation and growth of amine aerosols, and finally realizes the collaborative control of multiple pollutants.
Authors and Affiliations
YANG Zhengda*|College of New Energy, China University of Petroleum (East China), China, XIAN Zhennan|College of New Energy, China University of Petroleum (East China), China, SHAO Lingyu|State Key Laboratory of Clean Energy Utilization, Zhejiang University, China, ZHENG Chenghang2|State Key Laboratory of Clean Energy Utilization, Zhejiang University, China
Keywords
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- EP ID EP737966
- DOI 10.20078/j.eep.20230407
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