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International Journal of Chemical Technology
  Year: 2010 | Volume: 2 | Issue: 3 | Page No.: 78-87
DOI: 10.3923/ijct.2010.78.87
 
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Thermal Decomposition Study of Coals, Rice Husk, Rice Husk Char and Their Blends During Pyrolysis and Combustion via Thermogravimetric Analysis

Z. Zakaria, M.A. Mohd Ishak, M.F. Abdullah and K. Ismail

Abstract:
This study attempted to observe the thermal decomposition and to evaluate the reactivity of rice husk, rice husk char and its blends individually with Mukah Balingian (MB) low rank coal, Blair Athol (BA) low rank coal and Silantek (SL) medium rank coal during pyrolysis and combustion processes via Thermogravimetry (TG) method. The heating rate of the thermogravimetric analyser (TGA) was fixed at 20°C min-1. The thermal differential weight loss (DTG) evolution profiles which, correspond to the decomposition of volatile matter and char showed that the rice husk seems to be more reactive than the coal during pyrolysis and combustion processes. When, the rice husk char was blended individually with MB and BA coals at 50 wt.% ratio, the DTG evolution profiles during combustion revealed one single evolution profile, indicating the comparable thermo-chemical reactivity between the two different fuels. Hence, these observations indicate the feasibility of blending both MB and BA low rank coals individually with rice husk char as a potential fuel blends in the fixed-bed pulverized boiler combustor.
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How to cite this article:

Z. Zakaria, M.A. Mohd Ishak, M.F. Abdullah and K. Ismail, 2010. Thermal Decomposition Study of Coals, Rice Husk, Rice Husk Char and Their Blends During Pyrolysis and Combustion via Thermogravimetric Analysis. International Journal of Chemical Technology, 2: 78-87.

DOI: 10.3923/ijct.2010.78.87

URL: https://scialert.net/abstract/?doi=ijct.2010.78.87

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