Thermal and emission characteristics in a tangentially fired boiler model furnace

摘要: Tangentially fired furnaces are vortex-combustion units and intended for use as low NO formation furnaces. characteristics inside these depend on many parameters. The present study investigates numerically the problem of pollution in a real furnace 1699 MW tangentially boiler having 32 burners. contour maps presented. covered different combustion air temperature values, fuel–air ratios cases tripped Available experimental measurements were used validating calculation procedure. details fields obtained from solution conservation equations mass, momentum energy transport scalar variables addition to turbulence model. governing solved calculate distribution. simulation provided more insight correlation between total concentration maximum average temperature. results have shown that decrease excess factor increases given mass flow rate. As increases, thermal sharply. show distributions significantly distorted by tripping any one or two burners either adjacent opposite four regions high gases close walls. Heat absorptions super-heater economizer greatly influenced slightly burner tripping. Copyright © 2009 John Wiley & Sons, Ltd.