Fuel Characterization of Newly Discovered Nigerian Coals

International Conference on Materials Technology and Energy

Bevan Nyakuma, Bemgba^1,2 ; Oladokun, Olagoke^1,2 ; Jauro, Aliyu^3 ; Damian Nyakuma, Denen^4

Centre of Hydrogen Energy, Institute of Future Energy, Universiti Teknologi Malaysia, Skudai, Johor Baru

81310, Malaysia^1

Department of Chemical Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Skudai, Johor Baru

81310, Malaysia^2

National Centre for Petroleum Research and Development (NCPRD), Abubakar Tafawa Balewa University, P.M.B 0248, Bauchi State, Bauchi

740272, Nigeria^3

Directorate of ICT, University of Calabar, P.M.B 1115, Cross-River-State-Calabar

540271, Nigeria^4

关键词: Classification of coals;    Energy recovery;    Fuel characterization;    Fuel properties;    High potential;    Low rank coals;    Pollutant emission;    Value indices;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/217/1/012012/pdf
DOI  :  10.1088/1757-899X/217/1/012012

来源: IOP

【 摘 要 】

This study seeks to characterize and highlight the fuel properties, rank, and classification of coals from Ihioma (IHM) and Ogboligbo (OGB) in Imo and Kogi states of Nigeria, respectively. The fuel properties were examined based on ultimate, proximate, and bomb calorific analyses. The results indicated that IHM coal contains comparatively higher C and H but lower O, N, and S content than OGB. In addition, the nitrogen (N) and sulphur (S) content for both coal samples were above 0.7 wt.% and 1.5 wt.%, respectively, which indicates high potential for pollutant emissions. Furthermore, the coal proximate properties were below 5 wt.% for Moisture; Volatiles (70 wt.%); Fixed Carbon (45 wt.%) and Ash (2.5 wt.%) on average. IHM coal has an HHV of 19.40 MJ/kg whereas OGB is 15.55 MJ/kg. This is due to the low carbon (C), hydrogen (H) and high oxygen (O) content in OGB whereas IHM contains higher VM and HHV. Furthermore, OGB presents better handling, storage, and transport potential. Furthermore, OGB has a higher fuel ratio and value index due to lower moisture, ash content, and volatiles. Based on the ASTM D388 standard, the coals were classified as Lignite (Brown) Low-Rank Coals (LRCs) with potential for energy recovery.