# $K_2CO_3$를 담지시킨 고체 허니컴 이산화탄소 흡수제의 제조 및 이의 특성 평가

• 이동철 (호서대학교 화학공학과) ;
• 김진배 (호서대학교 화학공학과) ;
• 유윤종 (한국에너지기술연구원 에너지융합소재연구단)
• Published : 2012.12.10

#### Abstract

To capture and recover carbon dioxide ($CO_2$), we impregnated honeycomb made of ceramic paper with $K_2CO_3$ and its absorption characteristics of $CO_2$ were investigated. The absorption amount of $CO_2$ on the honeycomb absorbent impregnated with $K_2CO_3$ was 13.8 wt% at a constant temperature ($70^{\circ}C$) and relative humidity (66%) condition. Because the absorption amount of $CO_2$ achieved almost the same loading ratio of $K_2CO_3$ (17.6 wt%), the absorption reaction of $CO_2$ by $K_2CO_3$ on the honeycomb absorbent seems to be going smoothly. In addition, $CO_2$ absorption breakthrough characteristics of the honeycomb absorbent were analyzed at the temperature range of $50{\sim}80^{\circ}C$, and the water vapor was fed to an absorption column before the feeding of $CO_2$ or simultaneously with $CO_2$. As a result, the absorption capacity of $CO_2$ was more enhanced using the water vapor supplying before $CO_2$ than that of simultaneous supplying. It was confirmed by temperature programmed desorption analysis that the $KHCO_3$ produced by the absorption reaction of $K_2CO_3$ and $CO_2$ is regenerated by the desorption of $CO_2$ at a temperature of about $128^{\circ}C$.

#### References

1. Y. H. Kim, L. H. Xu, Y. D. Yoo, I. H. Choi, and H. T. Kim, J. Energy & Climate Change., 3, 34 (2008).
2. C. K. Yi, S. W. Hong, S. H. Jo, J. E. Son, and J. H. Choi, Korean Chem. Eng. Res., 43, 294 (2005).
3. C. K. Yi, Korean Chem. Eng. Res., 48, 140 (2010).
4. S. Y. Kang, K. C. Cho, G. H. Lee, and K. J. Oh, Korean Soc. Environ. Eng., 30, 225 (2008).
5. Y. Liang, D. P. Harrison, R. P. Gupta, D. A. Green, and W. J. McMichael, Energy Fuels, 18, 569 (2004). https://doi.org/10.1021/ef030158f
6. C. Zhao, X. Chen, and C. Zhao, Int. J. Greenhouse Gas Control., 4, 655 (2010). https://doi.org/10.1016/j.ijggc.2009.12.010
7. Korea Parent 10-2009-0033300 (2009).
8. B. C. Shin, H. Kwak, and K. M. Lee, Korean Chem. Eng. Res., 50, 646 (2012). https://doi.org/10.9713/kcer.2012.50.4.646
9. V. Nikulshina, N. Ayesa, M. E. Galvez, and A. Steinfeld, Chem. Eng. J., 140, 62 (2008). https://doi.org/10.1016/j.cej.2007.09.007
10. S. C. Lee, Y. M. Kwon, C. Y. Ryu, H. J. Chae, D. Ragupathy, S. Y. Jung, J. B. Lee, C. K. Ryu, and J. C. Kim, J. Fuel, 10, 1016 (2010).
11. K. C. Cho, W. J. Choi, S. J. Moon, S. W. Cho, G. I. Kim, and K. J. Oh, Korean Soc. Environ. Eng., 1, 1136 (2008).
12. K. W. Park, Y. S. Park, Y. C. Park, S. H. Jo, and C. K. Yi, Korean Chem. Eng. Res., 47, 349 (2009).