| Peer-Reviewed

Influence of Solid Concentration on the Flow Characteristics and Settling Rate of Coal-Water Slurries

Received: 12 June 2013     Published: 10 July 2013
Views:       Downloads:
Abstract

Coal–water slurries were prepared with a sub-bituminous coal at varying coal and water ratios using an anionic liquid soap as a surfactant. The slurry properties, viscosity and stability were determined. The rheological properties of the slurries were investigated to ascertain the characteristics of the slurries. The results showed that increasing coal (solid) concentration increased the density of the slurries. Higher density gave rise to more viscous slurries. The behaviour of the slurries changed from Newtonian to non-Newtonian at higher solid concentrations. The slurries with lower solid concentration settled faster than the higher solid concentration slurries.

Published in Journal of Energy and Natural Resources (Volume 2, Issue 3)
DOI 10.11648/j.jenr.20130203.11
Page(s) 21-24
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2013. Published by Science Publishing Group

Keywords

Coal, Concentration, Flow, Viscosity, Slurries, Settling Rate

References
[1] H. H. Schobert, K.D. Bartle and L.J. Lynch, Coal Science, Symposium Series 461 , Washington, DC: American Chemical Society, 1991.
[2] A. Steynberg. and M. Dry (eds), Fischer-Tropsch Technology, Studies in Surface Science and Catalysis, Philadelphia: Elsevier, 2004.
[3] Z. Aktas and E.T. Woodburn, "Effect of addition of surface active agent on the viscosity of a high concentration slurry of a low rank British coal in water", Fuel Processing Technology, vol. 62, pp.1-15, 2000.
[4] G. O. Davies (eds), Coal Liquid Mixtures, Second European Conference on Coal Liquid Mixtures , London: The Institution of Chemical Engineers symposium series; No. 95, 1985.
[5] J. Natoli, R.C. Mahar and R. Barret and B.R. Bosein." Polyacrylate thickeners for coal water slurries: Slurry formulation, stability and rheology", in: Coal Liquid Mixtures, G.O.Davies (eds.), Second European Conference on Coal Liquid Mixtures, London: The Institution of Chemical Engineers symposium series; No. 95, 1985, pp. 17-36.
[6] A.P. Burdukov, V.I. Popov, V.G. Tomilov and V.D. Fedosenko, "The rheodynamics and combustion of coal-water mixtures," Fuel, vol.81, pp.927-933, 2002.
[7] K. Thambimuthu, Developments in Coal-Liquid Mixtures, London: IEA Coal Research, 1994.
[8] V. Kalpesh. And D. Shyam, "Review of Charcoal-Diesel slurry: An Alternative fuel for Compression Ignition Engine", International Journal of Advanced Engineering Research and Studies, vol. 1(111), pp.143-147, 2012.
[9] G. Atesok, F. Boylu, A.A. Sirkeci and H. Dincer, "The effect of coal properties on the viscosity of coal-water slurries", Fuel, vol. 81, pp.1855-1858, 2002.
[10] P. Buranasrisak and M.H. Narasingha, "Effects of Particle Size Distribution and Packing Characteristics on the Preparation of Highly-Loaded Coal-Water Slurry," International Journal of Chemical Engineering and Applications, vol. 3(1), pp. 31-35, 2012.
[11] Q.D. Nguyen, C. Logos and T. Semmler, "Rheological properties of South Australian Coal-Water Slurries, Coal Preparation," vol. 18(3), pp.185-199, 1997.
[12] C. Hicyılmaz, S. Ozun,and N.E. Altun, "Rheological Properties of Asphaltite-Water Slurries", Energy and Fuels, vol. 20, pp.2037-2045, 2006.
[13] Z. Wang, R. Zhang, Z. Jiang. and S. Jiang, " 1993. Preparation of Coal-Water Fuels from Coal Preparation Plant Fines", in J.J. Davis (ed.), Proceedings of the Sixth Australian Coal Preparation Conference, pp. 418-427, 1993
[14] J.G. Speight, Handbook of Coal Analysis. New Jersey, USA: John Wiley & Sons, Inc., 2005.
[15] Y. Shin and Y. Shen, "Preparation of coal slurry with organic solvents", Chemosphere, vol. 68, pp. 389-393, 2007.
[16] G. A. Nunez, M. I. Briceno, D.J. Daniel and T. Asa, "Colloidal coal in water suspensions", Energy Environ. Sci., vol. 3, pp.629-640, 2010.
[17] P. Li, D. Yang, H. Lou and X. Qiu, "Study on the stability of coal water slurry using dispersion-stability analyzer", J Fuel Chem Technol, vol. 36(5), pp. 524−529, 2008.
[18] R. Awang and C.Y. May, "Charcoal-Oil Mixtures as an Alternative Fuel: A Preliminary Study", American Journal of Applied Sciences, vol. 6 (3), pp. 393-395, 2009.
[19] R. Yavuz and S. Kucukbayrak, "Effect of particle size distribution on rheology of lignite-water slurry", Energy Sources, vol. 20(9), pp.787-794, 1998.
Cite This Article
  • APA Style

    Kenechukwu Emmanuel Ugwu, Anthony Chibuzo Ofomatah, Samson Ifeanyi Eze. (2013). Influence of Solid Concentration on the Flow Characteristics and Settling Rate of Coal-Water Slurries. Journal of Energy and Natural Resources, 2(3), 21-24. https://doi.org/10.11648/j.jenr.20130203.11

    Copy | Download

    ACS Style

    Kenechukwu Emmanuel Ugwu; Anthony Chibuzo Ofomatah; Samson Ifeanyi Eze. Influence of Solid Concentration on the Flow Characteristics and Settling Rate of Coal-Water Slurries. J. Energy Nat. Resour. 2013, 2(3), 21-24. doi: 10.11648/j.jenr.20130203.11

    Copy | Download

    AMA Style

    Kenechukwu Emmanuel Ugwu, Anthony Chibuzo Ofomatah, Samson Ifeanyi Eze. Influence of Solid Concentration on the Flow Characteristics and Settling Rate of Coal-Water Slurries. J Energy Nat Resour. 2013;2(3):21-24. doi: 10.11648/j.jenr.20130203.11

    Copy | Download

  • @article{10.11648/j.jenr.20130203.11,
      author = {Kenechukwu Emmanuel Ugwu and Anthony Chibuzo Ofomatah and Samson Ifeanyi Eze},
      title = {Influence of Solid Concentration on the Flow Characteristics and Settling Rate of Coal-Water Slurries},
      journal = {Journal of Energy and Natural Resources},
      volume = {2},
      number = {3},
      pages = {21-24},
      doi = {10.11648/j.jenr.20130203.11},
      url = {https://doi.org/10.11648/j.jenr.20130203.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jenr.20130203.11},
      abstract = {Coal–water slurries were prepared with a sub-bituminous coal at varying coal and water ratios using an anionic liquid soap as a surfactant. The slurry properties, viscosity and stability were determined. The rheological properties of the slurries were investigated to ascertain the characteristics of the slurries. The results showed that increasing coal (solid) concentration increased the density of the slurries. Higher density gave rise to more viscous slurries. The behaviour of the slurries changed from Newtonian to non-Newtonian at higher solid concentrations. The slurries with lower solid concentration settled faster than the higher solid concentration slurries.},
     year = {2013}
    }
    

    Copy | Download

  • TY  - JOUR
    T1  - Influence of Solid Concentration on the Flow Characteristics and Settling Rate of Coal-Water Slurries
    AU  - Kenechukwu Emmanuel Ugwu
    AU  - Anthony Chibuzo Ofomatah
    AU  - Samson Ifeanyi Eze
    Y1  - 2013/07/10
    PY  - 2013
    N1  - https://doi.org/10.11648/j.jenr.20130203.11
    DO  - 10.11648/j.jenr.20130203.11
    T2  - Journal of Energy and Natural Resources
    JF  - Journal of Energy and Natural Resources
    JO  - Journal of Energy and Natural Resources
    SP  - 21
    EP  - 24
    PB  - Science Publishing Group
    SN  - 2330-7404
    UR  - https://doi.org/10.11648/j.jenr.20130203.11
    AB  - Coal–water slurries were prepared with a sub-bituminous coal at varying coal and water ratios using an anionic liquid soap as a surfactant. The slurry properties, viscosity and stability were determined. The rheological properties of the slurries were investigated to ascertain the characteristics of the slurries. The results showed that increasing coal (solid) concentration increased the density of the slurries. Higher density gave rise to more viscous slurries. The behaviour of the slurries changed from Newtonian to non-Newtonian at higher solid concentrations. The slurries with lower solid concentration settled faster than the higher solid concentration slurries.
    VL  - 2
    IS  - 3
    ER  - 

    Copy | Download

Author Information
  • National Centre for Energy Research and Development, University of Nigeria, Nsukka, Nigeria

  • National Centre for Energy Research and Development, University of Nigeria, Nsukka, Nigeria

  • National Centre for Energy Research and Development, University of Nigeria, Nsukka, Nigeria

  • Sections