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《Journal of Power Engineering》 2008-01
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Experimental Study of the Effect of Boiler Combustion Control on NO_x Emission and Boiler Efficiency

WANG Xue-dong~1,2,LUAN Tao~1,CHENG Lin~1,HU Zhi-hong~2(1.Thermal Science & Engineering Research Center,Shandong University,Jinan 250061,China;2.Dept.of Thermal Energy,Shandong Electric Research Institute,Jinan 250002,China)  
The influences of boiler combustion control on NO_x emission have been studied on two typical 1025 t/h boilers.By changing the excessive air coefficients,the amounts of burnout air,boiler loads,milling system operational modes,and so on,the influences of boiler operating conditions and modes on NO_x emission have been analyzed.The results show that the with the decrease of the excessive air coefficient and boiler load,NO_x emission of the bituminous coal fired boiler reduces much more than that of the lean coal fired boiler.And the NO_x emission of the constricted air distribution mode is 10% lower than that of the uniform mode.The operational mode of milling system influences coal combustion and temperature profile in the furnace as well as the NO_x emission.The NO_x emission can be reduced by 10~20% through combustion control without reduction of boiler efficiency.
【Fund】: 国际科技合作重点资助项目;; 大气中氮氧化物NO_x控制技术应用研究(2004DFA07700)
【CateGory Index】: TK227.1
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