Rheology of coal-water fuel from Enugu coal

Authors

  • D.O. Onwu Coal Research Laboratories, Department of Chemical Engineering, University of Science and Technology, Enugu, Nigeria
  • F.C. Inyiama Coal Research Laboratories, Department of Chemical Engineering, University of Science and Technology, Enugu, Nigeria
  • P.C.N. Ejikeme Coal Research Laboratories, Department of Chemical Engineering, University of Science and Technology, Enugu, Nigeria

Abstract

An experimental study was undertaken to investigate the rheological properties of formulated coal-water fuel (CWF) slurries from Enugu coals. Ten slurries were prepared with varying particle size distribution. Viscosities covering a shear rate of approximately 104 s-1 were measured using three commercial viscometers. The principal conclusions of the investigations are: (1) CWFs in the 70% solid content range exhibit non-Newtonian rheological behaviour. (2) Slight dilution of highly loaded mixtures decreased the viscosity drastically which made it depart much less from Newtonian behaviour. The viscosity measurements at high shear rates have important implications related to CWF atomization relevant to burner design and subsequent combustion.

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Published

2007-01-01

Issue

Vol. 3 No. 1 (2007): Journal of Engineering and Applied Sciences

Section

Articles