Abstract
In this research, absorbents for CO2 capture were prepared by blending 30 wt% potassium carbonate, 3 wt% of a rate promoter, and 1 wt% of a corrosion inhibitor. Pipecolic acid, sarcosine, and diethanolamine were chosen as rate promoter candidates. Based on a rate promoter screening test for CO2 loading capacity and absorption rate, pipecolic acid and sarcosine were selected to be used as rate promoters. 1,2,3-benzotriazole and ammonium thiocyanate were chosen as corrosion inhibitors, and they were mixed with a 30 wt% potassium carbonate-based absorbent mixture containing one of the rate promoters. The absorption rates for four absorbent solutions (30 wt% potassium carbonate + 3 wt% pipecolic acid + 1 wt% 1,2,3-benzotriazole, 30 wt% potassium carbonate + 3 wt% pipecolic acid + 1 wt% ammonium thiocyanate, 30 wt% potassium carbonate + 3 wt% sarcosine + 1 wt% 1,2,3-benzotriazole, and 30 wt% potassium carbonate + 3 wt% sarcosine + 1 wt% ammonium thiocyanate) were measured, tabulated, and graphically displayed. These types of absorbents can be used for capturing CO2 under high temperature and pressure conditions, such as those found in coal-fired power plants.
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Acknowledgements
This research was supported by the Human Resources Program in Energy Technology of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea (no. 20174010201640), and also supported by Global Ph.D. Fellowship Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2014H1A2A1021595).
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Kang, D., Lee, MG., Yoo, Y. et al. Absorption characteristics of potassium carbonate-based solutions with rate promoters and corrosion inhibitors. J Mater Cycles Waste Manag 20, 1562–1573 (2018). https://doi.org/10.1007/s10163-018-0719-4
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DOI: https://doi.org/10.1007/s10163-018-0719-4