Emission and Combustion Characteristics of Lafia-Obi Coal in Fluidized Bed Combustor

Abstract:

The technology of fluidized bed coal combustion (FBC) and its advantages over conventional coal burning systems is now well established and is extensively reported in the literature. There is also some emphasis in literature about the suitability of Lafia-Obi coal in FBC. However, there is little quantitative or qualitative information on theperformance of Lafia-Obi in FBC. This paper reports a study of the combustion of monosized coal fractions fed continuously to the bed via an overbed feeder. Using appropriate ASTM standards, proximate and ultimate analyses of samples of Lafia-Obi coal were carried out and the coal was then combusted in a fluidized bed. Results showed that Lafia-Obi coal has low moisture, high volatile matter and very high fixed carbon content. The volatile matter content places Lafia-Obi in the medium volatile bituminous rank. The data obtained is useful in application of fluidized bed combustion for energy production using Lafia-Obi Coal

• Periodical: Advanced Materials Research (Volume 824)
• Pages: 318-326
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.824.318
• Online since: September 2013
• Authors: Olubunmi Tolulope Popoola, Abraham A. Asere
• Keywords: Combustion Emissions, Fluidized-Bed Combustion, Lafia-Obi Coal, Power Generation, Temperature

References

[1] Online Article: Cooljoe. FEC Awards Contracts For Coal Power Plants, Others. NBF Topics. [Online] January, 2011. [Cited: March 29, 2011. ]http: /www. nigerianbestforum. com/generaltopics.

[2] Report: Nigerian Coal Corporation Information Manual. Nigerian Coal Corporation. 1997, 7th OAU/AFC Trade Fair.

[3] Book: Obaje, Nuhu George. Geology and mineral resources of Nigeria. Volume 120 of Lecture notes in earth sciences. London : Springer, (2009).

[4] Online Article: Rhodium LTD. summary report of the lafia-Obi coal field. Rhodium LTD minning and exploration. [Online] 2009. [Cited: June 23, 2009. ] http: /www. rhodiumltd. com/Lafia-Obicoal. html.

[5] Book: El-Mahallawy, Fawzyl and Habik, Saad El-Din. Fundamental and Technology of Combustion. Oxford, Elsevier Science Ltd., (2002).

[6] Journal: Oka, S. Fluidized bed combustion, a new technology for coal and other solid fuel combustion. Energy and Development. Belgrade : Society Nikola Tesla, 1986, pp.147-156.

[7] Book: Oka, Simeon N. Fluidized bed combustion. Belgrade : Marcel Dekker. Inc, (2004).

[8] ASTM International. Standard Test Method for Volatile Matter in the Analysis Sample of Coal and Coke. Annual Book of ASTM D3175. [Online] March 1, 2007. [Cited: May 12, 2009. ] http: /www. astm. org.

[9] ASTM International. Standard Test Method for Total Moisture in Coal. Annual Book of ASTM Standards D3302. [Online] 2006. [Cited: May 12, 2009. ] http: /www. astm. org.

[10] ASTM International . Standard Test Method for Moisture in the Analysis Sample of Coal and Coke. Annual Book of ASTM Standards D3173. [Online] Febuary 1, 2008. [Cited: May 12, 2009. ] http: /www. astm. org.

[11] ASTM International . Standard Test Method for Ash in the Analysis Sample of Coal and Coke from Coal. Annual Book of ASTM Standards D3174. [Online] July 2004. [Cited: may 12, 2009. ] http: /www. astm. org.

DOI: 10.1520/mnl11383m

[12] ASTM International . Standard Practice for Proximate Analysis of Coal and Coke. Annual Book of ASTM D3172. [Online] October 01, 2007. [Cited: May 12, 2009. ] http: /www. astm. org.

[13] ASTM International . Standard Practice for Preparing Coal Samples for Analysis. Annual Book of ASTM Standards D2013. [Online] july 2007. [Cited: May 12, 2009. ] http/: www. astm. org.

[14] ASTM International. Petroleum Products Lubricants and Fossil Fuels. Annual Book of ASTM Standards. 1992, Section 5: 05.

[15] Journal: Zhang, H., et al., et al. The fragmentation of coal particles during the coal combustion in a fluidized bed. Lincoln : Elsevier Science Ltd, (2002).

[16] Book: Harker, J.H. and Allen, D.A. Fuel Science. London : Cox and Wyman Ltd, (1972).

[17] Journal: Arena, U., et al., et al. 1992, Fine Particle Emissions During Fluidized Bed Combustion of Coal and Waste-Derived Fuels. Proc Combust Inst.

[18] Journal: Tullin, C. J., et al.,. 1993, Effect of Carbon Conversion and Bed Temperature. Energy Fuels, Vol. 7, pp.796-802.

[19] Journal: Kilpinen P. and Hupa, M. 94, 1991, Homogeneous N2O chemistry at fluidized bed combustion conditions: a kinetic fluidize study. Combust. Flame, Vol. 85.

DOI: 10.1016/0010-2180(91)90179-f