Korean Journal of Chemical Engineering

The Korean Institute of Chemical Engineers (한국화학공학회)
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Gasification of ash-free coal prepared with microwave method

  • Lee, Choong-Gon (Department of Chemical Engineering, Hanbat National University) ;
  • Kim, Won-Ki (Department of Chemical Engineering, Hanbat National University) ;
  • Vu, Duc-Luong (Department of Chemical Engineering, Hanbat National University)
  • Received : 2014.07.25
  • Accepted : 2014.12.08
  • Published : 2015.09.01
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Abstract

The production of ash-free coal as a clean fuel for high temperature fuel cell was investigated. The ash-free coal was made from a bituminous coal. It was prepared by solvent extraction using a microwave. The solvent-to-coal ratio and microwave irradiation time of raw coal were parameters for the extraction yield. The microwave method showed merits in terms of faster extraction and higher extraction yield than conventional heating methods. In addition, gasification behaviors of the ash-free coal were investigated by gas chromatography. Contrary to carbon, ash-free coal showed hydrogen as a dominant gas species in its gasification and did not require carbonate catalyst. The electrical conductivity of ash-free coal was found very low close to zero.

Keywords

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

References

  1. E. Jorhani, H. Ghasemi Chapi and M. Tayebi Khorami, Fuel Process. Technol., 92, 1898 (2011). https://doi.org/10.1016/j.fuproc.2011.05.008
  2. T. Yoshida, T. Takanohashi, K. Sakanishi, I. Saito, M. Fujita and K. Mashimo, Fuel, 81, 1463 (2002). https://doi.org/10.1016/S0016-2361(02)00068-6
  3. N. Okuyama, N. Komatsu, T. Shigehisa, T. Kaneko and S. Tsuruya, Fuel Process. Technol., 85, 947 (2004). https://doi.org/10.1016/j.fuproc.2003.10.019
  4. M. Iino, T. Takanohashi, H. Ohsuga and K. Toda, Fuel, 67, 1639 (1988). https://doi.org/10.1016/0016-2361(88)90208-6
  5. K. Renganathan, J.W. Zondlo, E.A. Mintz, P. Kneisl and A.H. Stiller, Fuel Process. Technol., 18, 273 (1988). https://doi.org/10.1016/0378-3820(88)90051-3
  6. K. Ouchi, S. Itoh, M. Makabe and H. Itoh, Fuel, 68, 735 (1989). https://doi.org/10.1016/0016-2361(89)90212-3
  7. K. Miura, M. Shimada and H. Huan, Fuel, 80, 1573 (2001). https://doi.org/10.1016/S0016-2361(01)00036-9
  8. C. Li, T. Takanohashi, I. Saito, M. Iino, H. Aoki and K. Mashimo, Energy Fuels, 18, 97 (2004). https://doi.org/10.1021/ef0340054
  9. L. Zhang, H. Kawashima, T. Takanohashi, T. Nakazato, I. Saito and H. Tao, Energy Fuels, 22, 1183 (2008). https://doi.org/10.1021/ef700610b
  10. R. Yoshiie, H. Watanabe, S. Uemiya, A. Furuya, N. Okuyama and N. Komatsu, Fuel, 102, 26 (2012). https://doi.org/10.1016/j.fuel.2008.10.024
  11. O. Somnez and E. Giray, Fuel, 90, 2125 (2011). https://doi.org/10.1016/j.fuel.2011.02.006
  12. Z. Lei, L. Wu, Y. Zhang, H. Shui, Z. Wang, C. Pan, H. Li, S. Ren and S. Kang, Fuel, 95, 630 (2012). https://doi.org/10.1016/j.fuel.2011.12.006
  13. C.-G. Lee, H. Hur and M.-B. Song, J. Electrochem. Soc., 158, B410 (2011). https://doi.org/10.1149/1.3544941
  14. A. Sharma, T. Takanohashi, K. Morishita, T. Takarada and I. Saito, Fuel, 87, 491 (2008). https://doi.org/10.1016/j.fuel.2007.04.015
  15. K. Masaki, T. Yoshida, C. Li, T. Takanohashi and I. Saito, Energy Fuels, 18, 995 (2004). https://doi.org/10.1021/ef049970o
  16. S.-H. Lee, Development of ashless coal production and application technology (III), KIER-A82801, A report of Korea Institute of Energy Research (2008).

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