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CO2 Capture Performance of Dry Sorbents Manufactured by Coal Fly Ash

석탄 화력발전소의 비산재를 이용한 건식 CO2 흡수제 제조 및 특성 연구

  • Lee, Jae Hee (Department of Environmental Engineering, The Catholic University of Korea) ;
  • Wee, Jung-Ho (Department of Environmental Engineering, The Catholic University of Korea)
  • 이제희 (가톨릭대학교 환경공학과) ;
  • 위정호 (가톨릭대학교 환경공학과)
  • Received : 2012.08.16
  • Accepted : 2013.08.12
  • Published : 2013.08.30

Abstract

This paper investigates the effect of coal-fired fly ash on dry $CO_2$ sorbents as the supports and additives. For this purpose, various kinds of dry sorbent were manufactured by mixing fly-ash, the primary $CO_2$ absorption components (NaOH and CaO) and water with their different combination. Thereafter, their $CO_2$ absorption performance and the property were analyzed. As a result, variation of absorption efficiency and temperature as well as $CO_2$ desorption of the sorbents are confirmed, which may be primarily ascribed to fly-ash addition to the sorbents. Particularly, fly-ash effect is strongly measured in the sorbent manufactured by mixing all four components (named WNCF sorbents). Absorption efficiency of WNCF sorbents at $550^{\circ}C$ is 35.6% higher than that of flyash free sorbent and desorption is solely observed in WNCF sorbents. Fly-ash in WNCF sorbents leads to increase the dispersity of $CO_2$ absorption components and decrease their particle size in the sorbents. In addition, fly-ash is used as the supports and pozzolanic reaction is hindered by NaOH in WNCF sorbent. Furthermore, $CO_2$ desorption from the sorbents may be due to fly-ash. The interaction between fly-ash and $CO_2$ absorption components substantially attenuate the strength between captured $CO_2$ in CaO and NaOH.

Acknowledgement

Supported by : 한국연구재단

References

  1. Lee, K. and Jo, Y. "Adsorption Characteristics of Chemically Modified Sorbents for Carbon Dioxide," J. Korean. Ind. Eng. Chem., 19(5), 533-538(2008).
  2. Lee, S. C., Choi, B. Y., Lee, T. J., Ryu, C. K., Ahn, Y. S. and Kim, J. C., "$CO_{2}$ absorption and regeneration of alkali metal-based solid sorbents," Catal. Today, 111(3-4), 385-390 (2006). https://doi.org/10.1016/j.cattod.2005.10.051
  3. Gray, M. L., Soong, Y., Champagne, K. J., Baltrus, J., Stevens, Jr., R. W., Toochinda, P. and Chuang, S. S. C., "$CO_{2}$ capture by amine-enriched fly ash carbon sorbents," Sep. Purif. Technol., 35(1), 31-36(2004). https://doi.org/10.1016/S1383-5866(03)00113-8
  4. Lee, S. C., Chae, H. J., Lee, S. J., Park, Y. H., Ryu, C. K., Yi, C. K. and Kim, J. C., "Novel regenerable potassium-based dry sorbents for $CO_{2}$ capture at low temperatures," J. Mol. Catal. B: Enzym., 56(2-3), 179-184(2009). https://doi.org/10.1016/j.molcatb.2008.07.007
  5. Li, P., Zhang, S., Chen, S., Zhang, Q., Pan, J. and Ge, J., "Preparation and Adsorption Properties of Polyethylenimine Containg Fibrous Adsorbent for Carbon Dioxide Capture," J. Appl. Polym. Sci., 108(6), 3851-3858(2008). https://doi.org/10.1002/app.27937
  6. Yi, C. K., "Advances of Post-combustion Carbon Capture Technology by Dry Sorbent," Korean Chem. Eng. Res., 48(2), 140-146(2010).
  7. Maroto-Valer, M. M., Lu, Z., Zhang, Y. and Tang, Z., "Sorbents for $CO_{2}$ capture from high carbon fly ashes," Waste Manage., 28(11), 2320-2328(2008). https://doi.org/10.1016/j.wasman.2007.10.012
  8. Siriwardane, R. V., Robinson, C., Shen, M. and Simonyi, T., "Novel Regenerable Sodium-Based Sorbents for $CO_{2}$ Capture at Warm Gas Temperatures," Energy Fuels, 21(4), 2088-2097 (2007). https://doi.org/10.1021/ef070008v
  9. Maroto-Valer, M. M., Andresen, J. M., Zhang, Y. and Lu, Z., "Development of Fly Ash Derived Sorbents to Capture $CO_{2}$ from Flue Gas of Power Plants," Final technical progress report for DOE, USA, 01-CBRC-E9(2004).
  10. Nyambura, M. G., Mugera, G. W., Felicia, P. L. and Gathura, N. P., "Carbonation of brine Impacted fractionated coal fly ash: Implications for $CO_{2}$ sequestration," J. Environ. Manage., 92(3), 655-664(2011). https://doi.org/10.1016/j.jenvman.2010.10.008
  11. Uliasz-Bocheńczyk, A., Mokrzycki, E., Piotrowski, Z. and Pomykała, P., "Estimation of $CO_{2}$ sequestration potential via mineral carbonation in fly ash from lignite combustion in Poland," Energy Procedia, 1(1), 4873-4879(2009). https://doi.org/10.1016/j.egypro.2009.02.316
  12. Montes-Hernandez, G., Perez-Lopez, R., Renard, F., Nieto, J. M. and Charlet, L., "Mineral sequestration of $CO_{2}$ by aqueous carbonation of coal combustion fly-ash," J. Hazard. Mater., 161(2-3), 1347-1354(2009). https://doi.org/10.1016/j.jhazmat.2008.04.104
  13. Olivares-Marín, M., Drage, T. C. and Maroto-Valer, M. M., "Novel lithium-based sorbents from fly ashes for $CO_{2}$ capture at high temperatures," Int. J. Greenhouse Gas Control, 4(4), 623-629(2010). https://doi.org/10.1016/j.ijggc.2009.12.015
  14. Gray, M. L., Champagne, K. J., Soong, Y. and Finseth, D. H., "Parametric study of the column oil agglomeration of fly ash," Fuel, 80(6), 867-871(2001). https://doi.org/10.1016/S0016-2361(00)00151-4
  15. Reddy, K. J., John, S., Weber, H., Argyle, M. D., Bhattacharyya, P., Taylor, D. T., Christensen, M., Foulke, T. and Fahlsing, P., "Simultaneous capture and mineralization of coal combustion flue gas carbon dioxide ($CO_{2}$)," Energy Procedia, 4, 1574-1583(2011). https://doi.org/10.1016/j.egypro.2011.02.027
  16. Ahmaruzzaman, M. "A review on the utilization of fly ash," Prog. Energy Combust. Sci., 36(3), 327-363(2010). https://doi.org/10.1016/j.pecs.2009.11.003
  17. http://www.ssycnt.co.kr/news_plant3.asp
  18. http://www.ceric.net/news/detail_02.asp?p=CERIC&tb= pubnews&code=cericnews&num=14736&ref=&page=1&start page=1&key=&k_s=0&k_e=0&k_w=0§ion_code=3
  19. http://www.hankyung.com/news/app/newsview.php?aid=2010041470741
  20. http://www.epic.or.kr/cont/yearbook/2010/yb2010_chap02_8.pdf