烧结矿冷却过程数值模拟及余热回收分析  

Numerical study on cooling process of sinter and analysis of waste heat recovery

作　　者：马淑杰 王景甫[1] 郭莲莲[1] Ma Shujie;Wang Jingfu;Guo Lianlian(Beijing University of Technology)

机构地区：[1]北京工业大学

出　　处：《冶金能源》2020年第1期17-22,共6页Energy For Metallurgical Industry

基　　金：国家重点基础研究发展规划(973计划)项目(2012CB720402)

摘　　要：建立了烧结矿冷却过程的多孔介质模型,探讨了烧结矿热物性参数分别采用经验值和实验值对数值模拟的影响,分析了不同的烧结矿粒径和不同入口风温工况下的出口热废气对余热发电量的影响。结果表明:使用热物性参数实验值对料层温度的模拟结果与热物性参数经验值模拟结果差距较大,实验值模拟结果更接近实际运行工况;在余热发电方面,烧结矿粒径越小、冷却风温越高,吨矿余热发电量越大。烧结矿粒径为50mm时比粒径为60mm时吨矿发电量提高了8. 66%;入口风温为583K时比入口风温为553K时吨矿发电量提高了7. 81%。In order to investigate the cooling process of sinter,a porous medium model of sinter cooling process was established. This model discussed the influence of the empirical values and experimental values on the numerical study of the thermophysical parameters of sinter,and analyzed the influence of the hot exhaust gas from the outlet on the power generation under different sinter partical size and inlet air temperature conditions. The results indicate that the simulation results of the experimental values are far from the simulation results of the empirical values,and the simulation results of the experimental values are closer to the actual operating conditions. In terms of waste heat power generation,the smaller the sinter size is,the higher the outlet air temperature is,and the larger the waste heat generating capacity of tons of ore is. When the particle size of sinter is 50 mm,the power generation per ton of sinter is increased by 8. 66% when the particle size is 60 mm. When the inlet air temperature is 583 K,the power generation per ton of sinter is increased by 7. 81% when the inlet air temperature is553 K.

关 键 词：烧结矿 环冷机 多孔介质 数值模拟 余热发电 

分 类 号：TF046.4[冶金工程—冶金物理化学]