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1篇 您的检索式:作者名="SHI Chaoting"
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1Optimization of Fuel In-Situ Reduction(FISR)Denitrification Technology for Cement Kiln using CFD Method显示文摘Nitrogen oxides(NO_(x))from cement industry have drawn more and more attention and the existing denitrification technologies can hardly meet the increasingly stringent emission requirements in China.In our previous work,fuel in-situ reduction(FISR)method was proposed to cut cement NO_(x)emission.With the pilot-scale precalciner in the previous experiment as objection,optimization of FISR method was conducted using CFD method.The results demonstrated that NO_(x)emission decreased by 69.86%after adopting FISR method.The effects of initial concentrations of NO and O_(2)in kiln gas,feeding location of the first-stage tertiary(tertiary air-I)and cement raw meal(CRM)were further investigated.With increasing initial NO concentration,NO_(x)emission increased linearly,while the reduction rate of NO in kiln gas maintained above 80%.When O_(2)content in kiln gas is more than 4%,oxygen would more significantly promote the formation of NO_(x)and inhibit the reduction of NO.The dimensionless locations of tertiary air-I and CRM were introduced.The simulation results showed that the optimal dimensionless locations are 0.6 and 1.6 for tertiary air-I and CRM,respectively.The outputs achieved in this study will provide a strong support for the practical application of FISR method in cement industry.SHI Chaoting CAI Jun REN Qiangqiang WU Huixing 2023Journal of Thermal Science2023,32,6:0
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