Characterization of Some Nigerian Coals for Power Generation

IF 1.5 Q3 ENGINEERING, CHEMICAL

Journal of Combustion Pub Date : 2016-05-12 DOI:10.1155/2016/9728278

M. Chukwu, C. O. Folayan, G. Pam, D. Obada

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引用次数: 48

Abstract

Five coal samples from Odagbo (Kogi State), Owukpa (Benue State), Ezimo (Enugu State), Amansiodo (Enugu State), and Inyi (Enugu State) of Nigerian coal deposits were subjected to proximate analysis, ultimate analysis, calorific value determination, and petrographic and thermogravimetric analysis to determine their suitability for power generation. Based on results of tests carried out, Amansiodo coal is a bituminous, low sulphur, and medium ash coal, while Owukpa coal is a subbituminous A, low sulphur, low ash coal rich in huminites, Odagbo coal is a subbituminous B, medium sulphur, low ash coal rich in huminites, Ezimo coal is a subbituminous C, low sulphur, high ash coal, and Inyi coal is a subbituminous C, low sulphur, high ash coal. Between Odagbo and Owukpa subbituminous coals, Owukpa has a lower ignition temperature (283.63°C) due to its higher volatile matter content (39.1%). However, Ezimo subbituminous coal, which has a lower volatile matter (31.1%), unexpectedly has the same ignition temperature as Owukpa (283.63°C) due to its higher liptinite content (7.2%) when compared with that of Owukpa (2.9%). The ease of combustion of the coal samples in decreasing order is Odagbo < Owukpa < Inyi < Ezimo < Amansiodo.

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尼日利亚一些发电用煤的特性研究

对来自尼日利亚奥达博(科吉州)、奥乌克帕(贝努埃州)、埃济莫(埃努古州)、阿曼西奥多(埃努古州)和因伊(埃努古州)煤矿的5个煤样进行了近似分析、最终分析、热值测定以及岩石学和热重分析，以确定它们是否适合发电。根据所进行的试验结果，Amansiodo煤为烟煤、低硫煤和中灰分煤，而Owukpa煤为亚烟煤a、低硫、低灰分、富腐质煤，Odagbo煤为亚烟煤B、中硫、低灰分、富腐质煤，Ezimo煤为亚烟煤C、低硫、高灰分煤，Inyi煤为亚烟煤C、低硫、高灰分煤。在Odagbo和Owukpa亚烟煤之间，Owukpa由于挥发分含量较高(39.1%)，其着火温度较低(283.63°C)。然而，挥发分较低(31.1%)的Ezimo亚烟煤，由于其褐煤含量(7.2%)高于Owukpa(2.9%)，其着火温度与Owukpa相同(283.63℃)。煤样的燃烧难易度由大到小依次为Odagbo < Owukpa < Inyi < Ezimo < Amansiodo。

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