Journal of Chemical Engineering & Process Technology
Open Access

Andrew Odeha

Publications

• Research Article
  Elucidation of the Influence of Coal Properties on Coal-Char Reactivity: A Look at Southern Hemisphere Coals
  Author(s): Andrew Odeha, Samuel Ogbeideb and Charity Okieimenc Andrew Odeha, Samuel Ogbeideb and Charity Okieimenc
  
  Pyrolysis is the first step in most coal conversion processes such as combustion, gasification and liquefaction. Coal char combustion is influenced by a wide variety of parameters (burnout time, heat release, mineral matter content etc.) which are factored into the reactivity of the char. On heat treatment, the coal particles undergo thermochemical decomposition with liberation of tars and volatiles and the formation of a resultant char. The reactivity of the char is dependent on both the physical and chemical changes that accompanying heat treatment of the coal particles. The char reactivity exhibited the same trend of decrease with increasing pyrolysis temperature for the four temperature program used in this evaluation. The derived aromaticity, total reflectance, surface area and porosity were found to increase with increasing pyrolysis temperature. The activation energy of the var.. View More»
  DOI: 10.4172/2157-7048.1000380

  Abstract PDF

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