Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
권호 표지

Numerical Study on the 300 MW Shell-type One-stage Entrained Flow Coal Gasifier Apllied with 4-Layer Slagging Model

4-Layer Slagging Model을 적용한 300 MW급 Shell형 1단 분류층 석탄 가스화기 전산수치해석

  • Received : 2011.12.12
  • Accepted : 20120015
  • Published : 2012.03.30
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Abstract

A slag building simplified model was developed to determine wall heat flux of a Shell 300 MW coal gasifier. In the model 4 layers(particulate, sintered, molten slag, solidified slag) were considered and mass conservation and energy balance were used to obtain each slag layer's thickness and surface temperature. Thermo-chemical and fluid charateristics of the gasifier were studied with and without considering the slag model using commercial CFD code FLUENT. Consideration of the slag layer did not affect syn-gas mole fractions. However, the slag layer caused to increase the exit gas temperature by about 50 K.

Keywords

References

  1. H. W. Liu, W.D. Ni, Z. Li, et al., "Strategic thinking on IGCC development in China", Energy Policy, Vol. 36, 2008, pp. 1-11. https://doi.org/10.1016/j.enpol.2007.08.034
  2. L. F. Zhao, Y. H. Xiao, K. S. Gallagher, et al., "Technical, environmental, and economic assessment of deploying advanced coal power technologies in the Chinese context", Energy Policy, Vol. 36, 2008, pp. 2709-2718. https://doi.org/10.1016/j.enpol.2008.03.028
  3. O. Maurstad, "An overview of coal based integrated gasification combined cycle(IGCC) technology, Massachusetts Institute of Technology", 2005, Publication no. LFEE 2005-002 WP. See also http:// lfee.mit.edu/publications.
  4. J. C. Corman, "Coal to electricity: Integrated gasification combined cycle", Applied Energy, Vol. 10, 1982, pp. 243-259. https://doi.org/10.1016/0306-2619(82)90050-2
  5. J. M. Beėr, "Combustion technology developments in power generation in response to environmental challenges", Progress in Energy and Combustion Science, Vol. 26, 2000, pp. 301-327. https://doi.org/10.1016/S0360-1285(00)00007-1
  6. X. Chen, M. Y. He, I. Spitsberg, N. A. Fleck, J. W. Hutchinson, A. G. Evans, "Mechanisms governing the high temperature erosion of thermal barrier coatings used in gas turbines", Wear, Vol. 256, 2004, pp. 735-746. https://doi.org/10.1016/S0043-1648(03)00446-0
  7. E. L. Doering, G. A. Cremer, "Advances in the Shell coal gasification process", Division of Fuel Chemistry, Vol. 40, 1995, pp. 312-317.
  8. U. Buskies, "The efficiency of coal-fired combinedcycle powerplants", Applied Thermal Engineering, Vol. 16, 1996, pp. 959-974. https://doi.org/10.1016/1359-4311(96)00001-4
  9. 송지훈, 강민웅, 서동균, 임성진, 백민수, 황정호, "300 MW급 Shell형 1단 분류층 석탄 가스화기의 전산수치해석: 산소/스팀/석탄 주입비, 석탄입자 크기, 주입 노즐 각도가 가스화기 성능에 미치는 영향", 한국수소 및 신에너지학회 논문집, 제21 권, 제3호, 2010, pp. 227-240
  10. C. Chen, M. Horio, and T. Kojima, "Numerical simulation of entrained flow coal gasifiers", Chemical Engineering Science, Vol. 55, 2000, pp. 3861-3833. https://doi.org/10.1016/S0009-2509(00)00030-0
  11. S. E. Zitney, and C. Guenther, "Gasification CFD modeling for advanced power plant simulations", Conference: 22nd Annual International Pittsburgh Coal Conference, Pittsburgh, PA, Sep. 12-15, 2005.
  12. Y. C. Choi, X. Y. Li, T. H. Park, J. H. Kim, and J. G. Lee, "Numerical study on the coal gasification characteristics in an entrained flow coal gasifier", Fuel, Vol. 80, 2001, pp. 2193-2201. https://doi.org/10.1016/S0016-2361(01)00101-6
  13. 서혜경, 정재화, 주지선, "건식 석탄공급형 1 Ton/ Day급 가스화시스템 설계조건 및 시운전결과", 한국수소 및 신에너지학회 논문집, Vol. 20, No. 4, 2009, pp. 352-359.
  14. S. Z. Yong, "Multiphase models of slag layer builtup in solid fuel gasification and combustion", M. I.T, M.S. thesis, 2010, USA
  15. 라호원 외, "분류층 습식 석탄가스화 기술", 한국화학공학연구정보센터, Vol. 48, 2010, pp. 129-139,
  16. D. P. Cundick, "Characterization of the thermal transport through a temporally varying ash layer", Brigham Yong University, M.S. thesis, 2009, USA.
  17. E. Steadman "Gasification ash and slag characterization", Semiannual Technical Progress Report, U.S Department of Energy, 1992
  18. M. J. Bockelie, D. A. Swensen, M. K. Denison, Z. Chen, C. L. Senior, and A. F. Sarofim, "CFD Modeling for entrained flow gasifiers in Vision 21 Systems", Proceedings of the Gasification Technologies Conference 2002, San Francisco, CA, Oct. 28-30, 2002.
  19. M. Seggiani, "Modeling and simulation of time varying slag flow in a Prenflo entrained-flow gasifier", Fuel, Vol. 77, 1998, pp. 1611-1621 https://doi.org/10.1016/S0016-2361(98)00075-1
  20. J. H. Zhou, J. P. Kuang and Z. J. Zhou, "Numericals simulation for pulverized coal gasifier's fluid flow characteristic on cold and hot condition", Proceedings of the CSEE, Vol. 27, 2007, pp. 30-35.
  21. X. Li, G. Li, Z. Cao, and S. Xu, "Research on flow characteristics of slag film in a slag tapping gasifier", Energy and fuels, Vol. 24, 2010, pp. 5109-5115. https://doi.org/10.1021/ef100197k
  22. K. C. Mills and J. M. Rhine, "The measurements and estimation of the physical properties of slags formed during coal gasification:2 Properties relevant to heat transfer", Fuel, Vol. 68, 1986, pp. 904-910.
  23. Y. Yun et al, "Selection of IGCC candidate coals by pilot-scale gasifier operation", Fuel Processing Technology, Vol. 88, 2007, pp. 107-116. https://doi.org/10.1016/j.fuproc.2004.08.009
  24. B. Sun, Y, Liu, X. Chen, Q. Zhou, M. Su, "Dynamic modeling and simulation of shell gasifier in IGCC", Fuel Processing Technology, Vol. 92, 2011, pp. 1418-1425. https://doi.org/10.1016/j.fuproc.2011.02.017
  25. 지준화, 오민, 김시문, 김미영, 이중원, 김의식, "석탄 가스화 반응의 동적 거동 전산 모사", 한국수소 및 신에너지학회 논문집, 제22권, 제3호, 2011, pp. 386-401.
  26. 김용택, 서동균, 황정호, "가스분석을 이용한 석탄 종류별 $CO_2$ 가스화 반응특성 연구", 한국연소학회지, Vol. 15, No. 2, 2010, pp. 41-49.
  27. 김봉근, 구자형, 김유석, 백민수, "석탄 가스화기 벽면의 슬래그 거동 및 열전달 해석", 한국 수소 및 신에너지학회 추계학술대회 논문집, 2011, pp. 233-237.