Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
권호 표지

Research on Desulfurization and Dust Removal Characteristics in Oxy-PC Combustion system

순산소 석탄연소 시스템에서의 탈황·집진 기초 특성

  • Min, Tai Jin (Div. of Environmental systems, Korea Institute of Machinery and Materials(KIMM)) ;
  • Keel, Sang In (Div. of Environmental systems, Korea Institute of Machinery and Materials(KIMM)) ;
  • Yun, Jin Han (Div. of Environmental systems, Korea Institute of Machinery and Materials(KIMM)) ;
  • Roh, Seon Ah (Div. of Environmental systems, Korea Institute of Machinery and Materials(KIMM)) ;
  • Han, Bang Woo (Div. of Environmental systems, Korea Institute of Machinery and Materials(KIMM)) ;
  • Lee, Hyung Keun (Greenhouse gas research center, Korea Institute of Energy Research(KIER)) ;
  • Kim, Sang Soo (Dept. Mech. Eng. Korea Advanced Institute of Science and Technology(KAIST)) ;
  • Lee, Kang Soo (Dept. Mech. Eng. Korea Advanced Institute of Science and Technology(KAIST)) ;
  • Seo, Sang Il (Power generation research lab., Korea Electric Power Research Institute(KEPRI)) ;
  • Kim, Young Ju (Power generation research lab., Korea Electric Power Research Institute(KEPRI))
  • 민태진 (한국기계연구원 그린환경기계연구본부) ;
  • 길상인 (한국기계연구원 그린환경기계연구본부) ;
  • 윤진한 (한국기계연구원 그린환경기계연구본부) ;
  • 노선아 (한국기계연구원 그린환경기계연구본부) ;
  • 한방우 (한국기계연구원 그린환경기계연구본부) ;
  • 이형근 (한국에너지기술연구원 온실가스연구단) ;
  • 김상수 (한국과학기술원 기계공학과) ;
  • 이강수 (한국과학기술원 기계공학과) ;
  • 서상일 (한전전력연구원 수화력발전연구소) ;
  • 김영주 (한전전력연구원 수화력발전연구소)
  • Received : 2009.10.29
  • Accepted : 2009.11.20
  • Published : 2010.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

$CO_2$ is regarded as one of the greenhouse gases(GHG), which is the main reason of climate change. In order to achieve lower $CO_2$ emissions, several efforts have been conducted worldwide. $CO_2$ capture & storage(CCS) technology development is needed for a coal-fired combustion power plant because of huge $CO_2$emission. Oxy fuel combustion, one of the CCS technologies has been considered as a primary concern, nowadays. Oxy-fuel combustion needs flue gas recirculation(FGR) for stable operation and enrichment of $CO_2$ concentration in the flue gas. FGR adoption for oxy-fuel combustion requires development of effective desulfurization and dust removal technology. In this study, desulfurization characteristics of lime and dust removal technology have been researched in the laboratory scale coal combustor.

CCS($CO_2$ capture & storage) 기술의 하나인 순산소 석탄화력발전 시스템에서 시스템의 안정한 운전을 위하여 연소가스 재순환이 적용되게 된다. 연소가스 재순환시 황산화물 및 분진의 농축이 발생되게 되며 일반적인 화력발전 시스템에서 탈황 및 집진과는 다른 형태의 운전조건을 나타내게 되므로 상용 석탄화력 발전소에 적용하기에 앞서 관련 연구가 필요하다. 본 연구에서는 이와 같은 순산소 석탄 연소 시스템에서 황산화물 및 분진의 효과적인 제거를 위하여 석회석을 이용한 로내탈황 및 고온 전기집진에 관한 기초적인 연구를 수행하였다. 석회석을 이용한 로내탈황에서 ash에 의한 탈황효과를 포함하여 60%의 탈황효율을 나타내었고 전기집진의 경우에는 $CO_2$ 비율이 높을수록 분진입자의 크기가 클수록 코로나 전류량의 감소로 인하여 집진효율이 저하하는 것으로 나타났다.

Keywords

References

  1. Han, K. H., Song, Y. S., Ryu, J. I., Son, J. E. and Jin, G. T., "The Characteristics of $SO_2$ Emission with Korean Anthracite in a Pressurized Fluidized Bed Combustor," HWAHAK KONGHAK, 41(1), 86-92(2003).
  2. Nimmo, W., Patsias, A. A., Gibbs, B. M. and Williams, P. T., "Simultaneous Reduction of $NO_x\;and\;SO_2$ Emissions from Coal Combustion by Calcium Magnesium Acetate," Fuel, 83(2), 149-155(2004). https://doi.org/10.1016/S0016-2361(03)00257-6
  3. Nimmo, W., Patsias, A. A., Gibbs, B. M. and Williams, P. T., "Calcium Magnesium Acetate and Urea Advanced Reburning for NO Control with Simultaneous $SO_2$ Reduction," Fuel, 8(9), 1143-1150(2004).
  4. Liu, H., Katagiri, S. and Okazaki, K., "Drastic SOx Removal and Influences of Various Factors in $O_2/CO_2$ Pulverized Coal Combustion System," Energy Fuels, 15(2), 403-412(2001). https://doi.org/10.1021/ef000171p
  5. Liu, H. and Okazaki, K., "Simultaneous Easy $CO_2$ Recovery and Drastic Reduction of $SO_2$ and NOx in $O_2/CO_2$ Coal Combustion with Heat Recirculation," Fuel, 82(11), 1427-1436(2003). https://doi.org/10.1016/S0016-2361(03)00067-X
  6. An, Y. M., Jo, H. D., Choi W. K., Park Y. S. Keel S. I. and Lee H. K., "Study on the In-Furnace Desulfurization for Oxy-Fuel Combustion Flue Gases Using Drop Tube Furnace," Korean Chem. Eng. Res., 47(4), 512-517(2009).
  7. Kim, S. D., Technology of coal energy conversion, Minumsa(1986).
  8. Laursen, K., Duo, W., Grace, J. R. and Lim, J., "Sulfation and Reactivation Characteristics of Nine Limestones," Fuel, 79(2), 153-163(2000). https://doi.org/10.1016/S0016-2361(99)00147-7
  9. Grubor, B., Manovic, V. and Oka, S., "An Experimental and Modeling Study of the Contribution of Coal Ash to $SO_2$ Capture in Fluidized Bed Combustion," Chem. Eng. J., 96, 157-169(2003). https://doi.org/10.1016/j.cej.2003.08.021