矿热炉水冷型和保温型烟道内颗粒沉积特性对比研究  

Numerical comparison study of water-cooled flue and insulated flue deposition in submerged arc furnace

作　　者：周康 林冬梅 刘长乐 ZHOU Kang;LIN Dongmei;LIU Changle(School of Mechanical and Power Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China)

机构地区：[1]沈阳化工大学机械与动力工程学院,辽宁沈阳110142

出　　处：《有色设备》2025年第2期50-55,61,共7页Nonferrous Metallurgical Equipment

摘　　要：通过数值模拟,研究了镍铁冶炼中矿热炉烟气回收过程中烟气颗粒沉积特性;利用Grant和Tabakoff提出的颗粒反弹模型及临界速度模型,建立颗粒沉积模型;利用RNG k-ε湍流模型,模拟了烟气流场;研究了水冷型烟道和保温型烟道颗粒沉积特性以及烟气流速对烟道颗粒沉积的影响。研究发现,水冷型烟道的沉积速率明显低于保温型烟道,采用水冷型烟道能有效减少烟道内颗粒沉积;随着烟气流速的增加,颗粒沉积速率降低,并且烟气的最佳流速为7 m/s。The flue gas particle deposition characteristics in the flue gas recovery process of submerged arc furnace flue in ferronickel smelting was investigated by numerical simulation method.The particle deposition was modeled using Grant and Tabakoff particle bounce model and critical velocity model.The gas flow field was simulated using the RNG k-εturbulence model.The particle deposition characteristics of water-cooled flue and insulated flue were investigated,as well as the effect of flue gas flow velocity on the particle deposition in the flue.It was found that the deposition rate of the water-cooled flue was significantly lower than that of the insulated flue,and the use of the water-cooled flue could effectively reduce the particle deposition in the flue;with the increase of the flue gas flow velocity,the particle deposition rate was reduced and the optimal flow velocity of the flue gas was 7 m/s.

关 键 词：水冷型烟道 两相流动 颗粒沉积 数值模拟 矿热炉 镍铁 

分 类 号：TF815[冶金工程—有色金属冶金]