Evaluation of performance of Anglo-Mafube bituminous South African coal in 550 MW opposite-wall and 575 MW tangential-fired utility boilers

Abstract We have developed a tool for the prediction of the firing behavior of any coal in a specific boiler that included many aspects such as emissions, performance, and operational issues. The tool has been tested for various coals fired in Israel Electric Corporation (IEC) 550 MW opposite-wall and 575 MW tangential-fired utility boilers fired. We also developed methods for studying the fouling and slagging behavior and determining the emissivity of the fly ash. In this study we further the development of these methods and applied them to investigate a new bituminous coal in a 50 kW test facility and these full-scale coal-fired boilers - Anglo-Mafube bituminous South African (MAF) coal - with the objective to predict its behavior in these boilers. From this study, light can be shed on the behavior of MAF coal in other boilers.

[1]  Richard W. Bryers,et al.  Fireside slagging, fouling, and high-temperature corrosion of heat-transfer surface due to impurities in steam-raising fuels , 1996 .

[2]  Behdad Moghtaderi,et al.  A computational fluid dynamics based study of the combustion characteristics of coal blends in pulverised coal-fired furnace , 2004 .

[3]  Paul W. Thrush,et al.  A DICTIONARY OF MINING, MINERAL AND RELATED TERMS. , 2015 .

[4]  B. Chudnovsky,et al.  Effect of Bituminous Coal Properties on Heat Transfer Characteristic in the Boiler Furnaces , 2004 .

[5]  RajenderKumar Gupta,et al.  Coal research in newcastle : past, present and future , 2005 .

[6]  James G. Speight,et al.  Handbook of Coal Analysis , 2005 .

[7]  G. H. Babcock,et al.  Steam / its generation and use , 1972 .

[8]  Roman Saveliev,et al.  Testing and Prediction of Performance and Emissions From Bituminous (Drummond Colombia) and Sub-Bituminous (Adaro Indonesia) Coals and Their Blends , 2006 .

[9]  Thomas H. Fletcher,et al.  A Study of Two Chemical Reaction Models in Turbulent Coal Combustion , 1988 .

[10]  R. Kurose,et al.  Numerical Simulations of Pulverized Coal Combustion , 2009 .

[11]  L. Douglas Smoot,et al.  Coal Combustion and Gasification , 1985 .

[12]  A. M. Eaton,et al.  Components, formulations, solutions, evaluation, and application of comprehensive combustion models , 1999 .

[13]  D. Gera,et al.  Parametric Sensitivity Study of a CFD-Based Coal Devolatilization Model , 2003 .

[14]  Atul Sharma,et al.  An experimental study of the effect of coal blending on ash deposition , 2004 .

[15]  Nadine D. Spitz,et al.  Firing a sub-bituminous coal in pulverized coal boilers configured for bituminous coals , 2008 .

[16]  Roman Saveliev,et al.  Prediction of Performance From PRB Coal Fired in Utility Boilers With Various Furnace and Firing System Arrangements , 2010 .

[17]  B. Chudnovsky,et al.  Advanced Supervision and Diagnostic System: The Tool for Improvement Reliability and Efficiency of Utility Boilers Burned Different Coals Type , 2007 .

[18]  V. T. Sathyanathan,et al.  Prediction of unburnt carbon in tangentially fired boiler using Indian coals , 2004 .

[19]  P. J. Smith,et al.  Three-dimensional discrete-ordinates modeling of radiative transfer in a geometrically complex furnace , 1993 .

[20]  Roman Saveliev,et al.  Computational fluid dynamic simulations of coal-fired utility boilers: An engineering tool , 2009 .

[21]  Steven A. Benson,et al.  A comprehensive slagging and fouling prediction tool for coal-fired boilers and its validation/application , 2007 .

[22]  Roman Saveliev,et al.  Fouling Formation in 575 MV Tangential-Fired Pulverized-Coal Boiler , 2010 .