挡板角度对挡板布料器布料过程的影响  

Effects of Flap Angles on the Charging Procedure of Flap Distributors

作　　者：陈立胜[1] 罗志国[1] 游洋[1] 邹宗树[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2013年第7期971-974,979,共5页Journal of Northeastern University(Natural Science)

基　　金：国家科技支撑计划项目(2011BAE04B01;2011BAE04B02);国家自然科学基金资助项目(51174053);山东省高等学校优秀青年教师国内访问学者资助项目

摘　　要：COREX熔化气化炉炉顶采用1个煤-万向节溜槽布料器和8个DRI-挡板布料器两种布料方式来完成布料过程,通过物理实验和离散单元法(DEM)数学模型模拟两种方法分析了挡板角度对DRI-挡板布料器的布料规律的影响.物理实验结果表明,挡板角度较小时形成较为集中的料流轨迹,挡板角度较大时形成具有一定分散度的料流轨迹.数学模型模拟获得的料流轨迹和料面形状与物理实验结果吻合较好,且利用数学模型还可进一步获得料堆内部结构和径向空隙度分布详细信息,该信息可为COREX现场合理调节煤气流分布提供一定的参考依据.The charging system of COREX melting gasifier involved one coal-gimbal chute distributor and eight DRI-flap distributors.The effects of the flap angle on the charging law of the DRI-flap distributors were analyzed by physical experiments and discrete element method（DEM） mathematical modeling simulation.Physical experiment results showed that when the flap angle was small,the burden flow trajectory was more concentrated;however,when the flap angle was large,the burden flow trajectory scattered.The mathematical modeling simulation results of the burden flow trajectory and pile shape agreed well with the physical experiment results,moreover,the detail information of the pile structure and the radial porosity profile can be further obtained by the mathematical modeling simulation,which provided some references to adjust reasonably gas flow distribution in COREX production field.

关 键 词：COREX熔化气化炉 挡板布料器 挡板角度 离散单元法 数值模拟 

分 类 号：TF557[冶金工程—钢铁冶金]