转炉摇炉过程中水冷密封小车控烟机制研究

为深入理解和掌握转炉摇炉过程中水冷密封小车对烟道内含硫烟气逸散的控制机制,基于数值模拟的方法研究了不同水冷密封小车位置和不同水冷密封小车结构条件下含硫烟气逸散的控制效果及机理。结果表明,小车的封挡和底部上升气流气封的综合作用抑制了烟气的逸散。小车长度增加强化了封挡效果,有利于硫化物富集。具体而言,处于下限位时小车长度由3.6 m延长至4.0 m,工艺烟道内SO2的浓度由7.8%增加至9.8%,SO3的浓度由1.1%增加至1.4%。

Study on the Flue Gas Control Mechanism of Water-Cooled Sealing Trolley in the Process of Converter Shaking

In order to comprehensive understand the control mechanism of sulfur-containing flue gas escape by water-cooled sealing trolley in the process of converter shaking, the control effect and mechanism of sulfur-containing flue gas escape under different position and different structures of water-cooled sealing trolley were studied based on numerical simulation. The results show that the combined action of the trolley"s block and the bottom updraft air seal effectively inhibits the flue gas escape. Increasing the length of the trolley strengthens the sealing effect and is conducive to sulfide enrichment. Specifically, at the lower limit, when the length of the trolley is extended from 3.6 m to 4.0 m, the concentration of SO2 in the process flue rises from 7.8% to 9.8%, and the concentration of SO3 rises from 1.1% to 1.4%.