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根据实际鱼雷罐的脱硫操作工艺参数,采用欧拉两流体模型、多孔介质模型、耦合镁粉脱硫动力学模型,对采用底部吹气搅拌辅助鱼雷罐顶吹镁粉脱硫过程进行了仿真分析,探讨了底吹辅助工艺的影响。结果表明:底吹辅助工艺能明显提高粉剂利用率和脱硫效率;随着底吹气量的增加脱硫效果越好,30 m3/h的吹气量即能满足要求;鱼雷罐入口与边端的中部底吹对内铁水脱硫效果较好,尤其2 650 mm位置最佳;脱硫时喷粉后进行280 s内的续吹可以防止回硫和进一步降低硫含量。
According to the actual process parameters of torpedo desulfurization operation, Euler two-fluid model, porous media model and coupled magnesium powder desulfurization kinetics model were used to simulate and analyze the desulfurization process of top-blown magnesium powder by using blow mixing at the bottom. Bottom blowing auxiliary process impact. The results show that the bottom blowing auxiliary process can obviously improve the utilization ratio of powder and the desulfurization efficiency. The better the desulfurization efficiency is, the better the desulfurization efficiency is. The blowing capacity of 30 m3 / h can meet the requirements. The internal hot metal desulfurization effect is better, especially the best position of 2 650 mm; desulphurization spray after 280 s within the blow to prevent back to the sulfur and further reduce the sulfur content.