Transient one-dimensional model of coal carbonization in a stagnant packed bed

Open access

Abstract

In the present paper, the one-dimensional model for heat and mass transfer in fixed coal bed was proposed to describe the thermal and flow characteristics in a coke oven chamber. For the purpose of the studied problem, the analysis was limited to the calculations of temperature field and pyrolytic gas yield. In order to verify the model, its theoretical predictions for temperature distribution during wet coal charge carbonization were compared with the measurement results found in the literature. In general, the investigation shows good qualitative agreement between numerical and experimental data. However, some discrepancy regarding the temperature characteristics at the stage of evaporation was observed.

[1] Kasperczyk J., Simonis W.: Die hochtemperaturverkokung von steinkohleim horizontalkammerofen bei schüttbetrieb als temperatur-zeit-reaktion. Glauckauf- Forschungshefte 32(1971), 23-34.

[2] Witos J., Byrtus F.: Determination of transient temperature field in a coke ovenchamber in case of compacted coal charge by means of direct measurement and numericalcalculations. Koks, smoła, gaz 1979, 212-219 (in Polish).

[3] Atkinson B., Merrick D.: Mathematical models of thermal decomposition ofcoal. 4. Heat transfer and temperature profiles in a coke-oven charge. Fuel 62(1983), 553-561.

[4] Merrick D.: Mathematical models of the thermal decomposition of coal: 2. Specificheats and heats of reaction. Fuel 62(1983), 540-546.

[5] Merrick D.: Mathematical models of the thermal decomposition of coal: 3. Density,porosity and contraction behaviour. Fuel 62(1983), 547-552.

[6] Tomeczek J., Palugniok H.: Specific heat capacity and enthalpy of coal pyrolysisat elevated temperatures. Fuel 75(1996), 1089-1093.

[7] Suuberg E.M.: The significance of transport effects in determining coal pyrolysisrates and yields. ACS Division of Fuel Chemistry (Preprint), New Orleans, 32(1987), (3), 51-58.

[8] Bien A.S., Phillips O., Wolkstein M.: Thermal conductivity of carbonaceousbriquettes. Proc. ACS Symposium on preparation and properties of coals, 4(1960), (2), 81-86.

[9] Nomura S., Arima T.: Coke shrinkage and coking pressure during carbonizationin a coke oven. Fuel 79(2000), 1603-1610.

[10] Stelmach S., Kardaś D., Polesek-Karczewska S.: Experimental verificationof the non-Fourier model of heat transfer within coke oven charge. Karbo 3(2011), 156-165 (in Polish).

[11] Siegel R., Howell J.: Thermal Radiation Heat Transfer. Taylor Francis, London 1992.

[12] Anderson D.A., Tannehill J.C., Pletcher R.H.: Computational fluid mechanicsand heat transfer. Hemisphere Publishing Company, 1984.

[13] Polesek-Karczewska: Comparative Analysis of the Gasification Kinetics of DifferentTypes of Biomass and Fossil Fuels. Rep. IFFM PASci 141/2008 Gdansk 2008 (in Polish).

[14] Postrzednik S.: Solid fuel carbonization - method of determination, basic relations. Karbo, Energochemia, Ekologia 39(1994), (9), 220-228 (in Polish).

[15] Alvarez R.,Pis J.J., Diez M.A., Barriocanal C., Menendez J.A., Casal M.D., Parra J.B.: Carbonization of wet and preheated coal. Effect on coke qualityand its relation with textural properties. J. Anal. Appl. Pyrol. 79(1996), 1603-1610.

[16] Amamoto K.: Coke strength development in the coke oven. 1. Influence of maximumtemperature and heating rate. Fuel 76(1997), 17-21.

[17] Kardas D., Polesek-Karczewska S. Mertas B.: Modelling of temperaturedistribution in a coke oven. Karbo 3(2009), 151-155 (in Polish).

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

Cited By

Metrics

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 146 146 12
PDF Downloads 59 59 6