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《Journal of Power Engineering》 2007-06
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Mechanism of NO Reduction by Reburning Micronized Coal Char

LIU Zhong~(1,2),YAN Wei-ping~1,ZHAO Li~1,SONG Qiang~2,YAO Qiang~2(1.School of Environmental Science and Engineering,North China University of Electric Power,Baoding 071003,China;2.MOE's Key Lab of Thermal Science and Power Engineering,Tsinghua University,Beijing 100084,China)  
Experimental tests on NO reduction by reburning have been performed at 1200℃,1300℃ and 1400℃,in an entraining tube furnace,using a mixture of coal char particles,with 3 different granularities,as the reburning fuel and a proper mixture of N_2,O_2,CO_2,and NO as the simulated flue gas.The chemical reaction mechanism was therewith analyzed.Results indicate that the reducing reaction rate of NO depends upon the combined effect of diffusion and reaction kinetics.Therefore,the reducing reaction rate of NO can noticeably be increased by raising the temperature in the reburning zone and by using char of high reactivity or high granularity.
【Fund】: 国家电力公司科技攻关资助项目(KJ000-02-16-03);; 博士教师基金资助项目(20041203)
【CateGory Index】: TK227.1
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