Analysis of cyclic combustion of the coal-water suspension

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Analysis of cyclic combustion of the coal-water suspension

Combustion technology of the coal-water suspension creates a number of new possibilities to organize the combustion process fulfilling contemporary requirements, e.g. in the environment protection. Therefore the in-depth analysis is necessary to examine the technical application of coal as a fuel in the form of suspension. The research undertakes the complex investigations of the continuous coal-water suspension as well as cyclic combustion. The cyclic nature of fuel combustion results from the movement of the loose material in the flow contour of the circulating fluidized bed (CFB): combustion chamber, cyclone and downcomer. The experimental results proved that the cyclic change of oxygen concentration around fuel, led to the vital change of both combustion mechanisms and combustion kinetics. The mathematical model of the process of fuel combustion has been presented. Its original concept is based on the allowance for cyclic changes of concentrations of oxygen around the fuel. It enables the prognosis for change of the surface and the centre temperatures as well as mass loss of the fuel during combustion in air, in the fluidized bed and during the cyclic combustion.

Gajewski W., Kijo-Kleczkowska A., Leszczyński J.: Analysis of cyclic combustion of solid fuels. Fuel 88(2009), 221-234.

Atesok G., Boylu F., Sikeci A. A., Dincer H.: The effect of coal properties on the viscosity of coal-water slurries. Fuel 81(2002), 1855-1858.

Boylu F., Dincer H., Atesok G.: Effect of coal particle size distribution, volume fraction and rank on the rheology of coal-water. Fuel Processing Technology (2004), 241-250.

Burdukov A. P., Popov V. I., Tomilov V. G.: The rheodynamics and combustion of coal-water mixtures. Fuel 81(2002), 927-933.

Liu G. E., Law C. K.: Combustion of coal-water droplets. Fuel 65(1986), 171-176.

Dunn-Rankin D., Hoornstra J., Gruelich F. A., Holve J.: Combustion of coal-water slurries. Evolution of particle size distribution for coals of different rank. Fuel 66(1987), 1139-1145.

Chan K. K.: Pilot-scale combustion tests on coal-water mixtures with reference to particle agglomeration. Fuel 73(1994), 1632-1637.

Ślączka A.: Coal-water suspensions on the basis of coke-coals and energy-coals. Scientific Books of Silesian Technical University. Mining Engineering 231(1996), 499-511 (in Polish).

Hycnar J.: Liquid coal fuel: coal-water suspensions. Mining Messages 2(2001), 63-68 (in Polish).

Wandrasz J. W., Nadziakiewicz J.: Fuels from wastes, Vol. III. Gliwice 2001 (in Polish).

Nadziakiewicz J., Kozioł M.: Co-combustion of sludge with coal. Applied Energy 75(2003), 239-248.

Kubica R., Smołka W.: Coal suspensions. Development, characterization and use perspectives. Management of Fuels and Energy 1(2000), 2-8 (in Polish).

Polański R.: Planning of Experiments in Technics. PWN, Warsaw 1984 (in Polish).

Gajewski W.: Analysis of combustion processes of coal-water suspensions in the fluidized bed. Report of research project 2005-2008 (in Polish).

Kijo-Kleczkowska A.: Combustion of coal-water suspensions. Fuel 90(2011) 2, 865-877.

Archives of Thermodynamics

The Journal of Committee on Thermodynamics and Combustion of Polish Academy of Sciences

Journal Information

CiteScore 2016: 0.54

SCImago Journal Rank (SJR) 2016: 0.319
Source Normalized Impact per Paper (SNIP) 2016: 0.598

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