Journal of the Korean Institute of Gas (한국가스학회지)

The Korean Institute of GAS (한국가스학회)
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The Study on Synthesis Gas Characteristics Following Different Injection Condition of Oxidizing Agent Through Simulation of Underground Coal Gasification

지중 석탄가스화 공정 시뮬레이션을 통한 산화제 주입조건에 따른 합성가스 특성에 대한 연구

  • Received : 2013.06.08
  • Accepted : 2013.08.22
  • Published : 2013.10.31
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Abstract

The underground coal which is buried in the ground will have a lot of attention to overcome energy crisis as an energy resources standpoint. Many studies of underground coal gasification have been also conducted because of its advantage which does not require mining. In this study, the simulation of underground coal gasification process was carried out with Aspen Plus. This study was executed by Rock Mountain 1 Underground Coal Gasification project in the United States in the late 1980s as a reference. Sensitivity analysis proceeded to investigate synthesis gas characteristics following different injection condition of oxidizing agent. The underground coal gasification model has been implemented. That is divided into drying, pyrolysis, char gasification and the simulation results was confirmed by the production gas flow, yield of synthesis gas and amount of gasified carbon from results of the actual experimental data.

에너지 보안의 위기를 타파하기 위한 가장 많은 관심을 가지고 있는 것 중 하나가 지중 속 매장되어 있는 석탄이다. 본 연구에서는 지중에서 석탄을 직접 채굴을 하지 않고 지중 내 석탄 가스화를 직접 진행할 수 있는 지중 석탄가스화 공정에 대하여 화학 반응 공정 모사를 진행하였다. 본 연구는 1980년대 말에 미국의 Rocky Mountain 1 지중 석탄가스화 프로젝트를 참고로 진행을 하여 기본 모델을 완성하였다. 그리고 산화제 주입조건에 따른 민감도 분석을 통하여 합성가스의 조성 결과를 확인하였다. 반응 모델은 건조, 열분해, 촤 가스화로 나누어 모델이 구현되었고 실제 실험값에서의 생산된 가스량, 가스화 된 탄소량, 가스 수율 등의 값으로 결과를 확인하였다.

Keywords

References

  1. U.S. Department of Energy Office of Fossil Energy, "Hanna, Wyoming Underground Coal Gasification Data Base", (1985)
  2. Martin, J.W. and A.M. Hartstein, "UCG Program Overview. In Proceedings of the Fourteenth Annual Underground Coal Gasification Symposium, Chicago, III. DOE/METC 88/6097 (DE88001093)", (1988)
  3. DAVID A BELL, BRIAN F TOWLER, MAOHONG FAN, "Coal Gasification and Its Applications", 104, (2011)
  4. C.B Thorsness, S.-W. Kang, "Further development of a general-purpose, packed-bed model for analysis of underground coal gasification processes", (1985)
  5. Greg Perkins, Veena Sahajwalla, "Steady-State Model for Estimating Gas Production from Underground Coal Gasification", Energy & Fuels, 22, 3902-3914, (2008) https://doi.org/10.1021/ef8001444
  6. Levenspiel, O., "Chemical Reactor Engineering", John Wiley and Sons, New York, (1972)
  7. Westbrook, C., Dryer, F. L., "Chemical kinetic modeling of hydrocarbon combustion", Prog. Energy Combust. Sci. 10, 1-57, (1984) https://doi.org/10.1016/0360-1285(84)90118-7
  8. Di Blasi, C., "Dynamic behaviour of stratified downdraft gasifiers", Che. Eng. Sci, 55, (2000)
  9. Govind, R., Shah, J., "Modeling and simulation of an entrained flow coal gasifier", AIChE J, 30, 79-91, (1984) https://doi.org/10.1002/aic.690300113
  10. Perkins, G., "Mathematical modelling of underground coal gasification", Ph.D. Thesis, The University of New South Wales, Sydney, Autralia, (2005)
  11. Roberts, D.G., Harris, D.J., "Char gasification with $O_2$, $CO_2$, and $H_2O$ : Effects of pressure on intrinsic reaction kinetics", Energy Fuels, 14, 483-489, (2000) https://doi.org/10.1021/ef9901894
  12. Tomita, A., Mahajan, O. P., Jr., "Reactivity of heat-treated coals in hydrogen", Fuel, 56, 137-144, (1977) https://doi.org/10.1016/0016-2361(77)90133-8
  13. A.D. Youngberg, "Hydrogeologic evaluation of the HANNA coal gasification site", Laramie Energy Technology Center, Laramie, Wy 82071
  14. A. BLIEK, J. C. LONT and W. P. M. VAN SWAAIJ, "Gasification of coal-derived chars in synthesis gas mixtures under intraparticle mass transfer-controlled conditions, Chemical Engineering Science, 41(7), 1895-1909, (1986) https://doi.org/10.1016/0009-2509(86)87069-5
  15. Abhishek Dutta, "Multicomponent gas diffusion and adsorption in coals for enhanced methane recovery", Energy Resources Engineering of Stanford University, (2009)
  16. Christopher Higman and Maarten van der Burgt, "Gasification - Second Edition", (2008)