Korean Chemical Engineering Research

  • 제55권6호
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  • Pages.846-853
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  • 2017
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  • 0304-128X(pISSN)
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  • 2233-9558(eISSN)
한국화학공학회 (The Korean Institute of Chemical Engineers)
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슬러지 순산소 유동층 연소특성

Combustion Characteristics of Waste Sewage Sludge using Oxy-fuel Circulating Fluidized Bed

  • Jang, Ha-Na (Department of Environmental Engineering, Yonsei University) ;
  • Sung, Jin-Ho (Department of Environmental Engineering, Yonsei University) ;
  • Choi, Hang Seok (Department of Environmental Engineering, Yonsei University) ;
  • Seo, Yong-Chil (Department of Environmental Engineering, Yonsei University)
  • 투고 : 2017.04.24
  • 심사 : 2017.07.24
  • 발행 : 2017.12.01
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초록

순환유동층 모사장치와 $30kW_{th}$급 파일럿 연소기를 활용하여 슬러지 순산소 유동층 연소특성을 살펴보았다. 순환유동층 모사실험에서 최소유동화속도($U_{mf}$)는 0.120 m/s로 계산되었고, 고속유동화를 위한 공탑속도는 2.5 m/s 이상으로 결정되었다. 파일럿 연소실험에서는 일반공기 및 21~40% 순산소 연소실험이 수행되었다. 배출가스 온도의 경우 21~25% 순산소 연소가 일반공기 및 30% 이상의 순산소 연소보다 상대적으로 높았다. 또한, 배출가스 중 $CO_2$ 배출농도가 21~25% 순산소 연소 범위에서 80% 이상으로 나타났다. 이를 고려한 전반적인 연소특성을 살펴 보았을 때 25% 순산소 연소가 본 슬러지 연료 연소에 대한 장시간 운전에 있어 보다 적합한 것으로 사료된다.

Cold bed and $30kW_{th}$ pilot bed tests using circulating fluidized bed (CFB) were conducted to apply oxy-fuel technology for waste sludge combustion as a carbon capture and storage technology. In cold bed test, the minimum fluidization velocity ($u_{mf}$) and superficial velocity for fast fluidization was determined as 0.120 m/s and 2.5 m/s, respectively. In the pilot test, air and oxy-fuel combustion experiments for waste sludge were conducted using CFB unit. The flue-gas temperature in 21~25% oxy-fuel combustion was higher than that of air and up to 30% oxy-fuel combustion. In addition, the concentration of carbon dioxide was more than 80% with the oxygen injection range from 21% to 25% in oxy-fuel CFB waste sludge combustion.

키워드

참고문헌

  1. Ogada, T. and Werther, J., "Combustion Characteristics of Wet Sludge in a Fluidized Bed," Fuel Sci. Technol. Int., 75, 617-626 (1996).
  2. Lee, J. K., Lee, K. H., Lee, K. H. and Chun, H. S., "Incineration of Paper Sludge Wastes in a Two-Stage Swirl-Flow Fluidized Bed Combustor," Korean Chem. Eng. Res., 28(4), 470-479(1990).
  3. Lee, J. K., Lee, K. H., Jang, J. G., Lee, N. S., Lim, J. S. and Chun, H. S., "Fluidized Bed Incineration of Digested Sewage Sludge: Part 1. Combustion Characteristics of the Single-Stage Fluidized Bed Incinerator," Korean Chem. Eng. Res., 30(2), 228-236 (1992).
  4. Lee, J. K., Lee, K. H., Jang, J. G., Lim, J. H., Lim, J. S. and Chun, H. S., "Combustion Characteristics of Digested Sewage Sludge in a Two-stage Swirl-Flow Fluidized Bed Incinerator," Korean Chem. Eng. Res., 30(4), 499-508(1992).
  5. Latva-Somppi, J., Kauppinen, E. I., Valmari, T., Ahonen, P., Gurav, A. S., Kodas, T. T. and Johanson, B., "The Ash Formation during Co-combustion of Wood and Sludge in Industrial Fluidized Bed Boilers," Fuel Process. Technol., 54, 79-94(1998). https://doi.org/10.1016/S0378-3820(97)00061-1
  6. Kaferstein, P., Gohla, M., Tepper, H. and Reimer, H., "Fluidization, Combustion and Emission Behaviour of Biomass in Fluidized Bed Combustion Units," 14th International Conference Fluidized Bed Combustion, May, Vancouver(1977).
  7. Albrecht, J. and Schelhaas, K. P., "Investigation in NOx Formation at Combustion of Sewage Sludge in an Commercial Scale Bubbling Fluidized Bed," 14th International Conference Fluidized Bed Combustion, May, Vancouver(1977).
  8. North, B. C. and Eleftheriades, C. M., "Incineration of Biomass Sludge in a Bubbling Fluidized Bed Combustion," 14th International Conference Fluidized Bed Combustion, May, Vancouver(1977).
  9. Werther, J. and Ogada, T., "Sewage Sludge Combustion," Prog. Energy Combust. Sci., 25, 55-116(1995).
  10. Final Report entitled "Oxy-fuel Combustion Technology of Waste Sludge and Biomass by Circulating Fluidized Bed using Flue-gas Recirculation," Korea Energy Technology Evaluation Institute, Ministry of Trade, Industry and Energy (2013).
  11. IPCC Special Report on Carbon Dioxide and Storage, http://www.ipcc.ch.
  12. Buhre, B. J. P., Elliott, L. K., Sheng, C. D., Gupta, R. P. and Wall, T. F., "Oxy-fuel Combustion Technology for Coal-fired Power Generation," Prog. Energy Combust. Sci., 31, 283-307(2005). https://doi.org/10.1016/j.pecs.2005.07.001
  13. Chen, L., Yong, S. Z. and Ghoniem, A. F., "Oxy-fuel Combustion of Pulverized Coal: Characterization, Fundamentals, Stabilization and CFD Modeling," Prog. Energy Combust. Sci., 38, 156-214(2012). https://doi.org/10.1016/j.pecs.2011.09.003
  14. Molburg, J. C., Doctor, R. D. and Brockmeier N. F., "Carbon Dioxide Capture from PC Boilers with $O_{2}$-firing," 18th Annual International Pittsburgh Coal Conference, December, Newcastle(2001).
  15. Wang, C. S., Berry, G. F., Chang, K. C. and Wolsky, A. M., "Combustion of Pulverized Coal using Waste Carbon Dioxide and Oxygen," Combust. Flame, 72, 301-310(1988). https://doi.org/10.1016/0010-2180(88)90129-0
  16. Gotou, T., Yamada, T., Kiga, T., Misawa, N. and Hashimoto, K., "Study Results of Combustion Characteristics and Behaviors of the Corrosive Substances in Oxy-fuel Combustion Process," Proceeding of the 2nd International Oxy-fuel Combustion Conference, September, Yeppoon(2011).
  17. Croiset, E. and Thambimuthu, K. V., "$NO_{x}$ and $SO_{2}$ Emissions from Oxygen/Carbon Dioxide Recycle Coal Combustion," Fuel Sci. Technol. Int., 80, 2117-2121(2001).
  18. Jia, L., Tan, Y., Wu, Y. and Anthony, E. J., "Oxy-fuel Tests and Results using a Pilot-scale Circulating Fluidized Bed," Proceeding of the 2nd International Oxy-fuel Combustion Conference, September, Yeppoon(2011).
  19. Tourunen, A., Leino, T., Pikkarainen, T., Nevalainen, H. and Kuivalainen, R., "Small Pilot Scale CFB Experiments under Air- and Oxygen-firing Conditions," Proceeding of the 2nd International Oxy-fuel Combustion Conference, September, Yeppoon(2011).
  20. Arias, B., Peveda, C., Rubiera, F. and Pis, J. J., "Effect of Biomass Blending on Coal Ignition and Burnout during Oxy-fuel Combustion," Fuel Sci. Technol. Int., 87, 2753-2759(2008).
  21. Fryda, L., Sobrion, C., Cieplik, M. and van de Kamp, W. L., "Study on Ash Deposition under Oxy-fuel Combustion of Coal/Biomass Blends," Fuel Sci. Technol. Int., 89, 1889-1902(2010).
  22. Toftegaard M. B., Brix, J., Jensen, P. A., Glarborg, P. and Jensen, A. D., "Oxy-fuel Combustion of Solid Fuels," Prog. Energy Combust. Sci., 36, 581-625(2010). https://doi.org/10.1016/j.pecs.2010.02.001
  23. Basu, P., Combustion and Gasification in Fluidized Beds, Taylor & Francis(2006).
  24. Kunii, D. and Lenenspiel, O., Fluidization Engineering, Butterworth-Heinemann(1991).
  25. Hannes, J. P., Mathematical Modeling of Circulating Fluidized Bed Combustion, Kartographie und Druck Peter List(1996).
  26. Horio, M., Hydrodynamics of Circulating Fluidized Beds, Circulating Fluidized Bed Technology IV(1997).