利用离散相模型对转炉一次除尘新OG系统高效喷淋塔内喷嘴的雾化特性进行模拟，分析了喷射角度、喷射压力、喷射流量及喷嘴水平间距等因素对雾化场索太尔平均直径(SMD)和蒸发效率的影响. 结果表明，在一定范围内随喷射角度增加，液滴在雾化场中的覆盖面增大，液滴驻留时间变长，蒸发效率增加，雾化场SMD减小，喷射角度大于60o时，SMD值减小缓慢. 随喷射压力增大，液滴蒸发效率增加，雾化场SMD减小，压力大于1.0 MPa时对SMD的影响较小. 随喷射流量增加，液滴蒸发效率减小，雾化场SMD增加，流量小于0.15 kg/s时，SMD增加幅度偏小. 两喷嘴水平间距越大，液滴分布面积越大，但对雾化场SMD影响较小. 在一定条件下，喷嘴间距约为800 mm时，截面速度分布较均匀.
The gas?liquid two-phase coupled flow of the atomization field in the nozzle of the high efficiency spray tower of new oxygen converter gas recovery (OG) system of primary dedusting system for converter was simulated by using the discrete phase model. The influences of the spray angle, the atomizer pressure, the atomizer mass flow rate and the horizontal distance between two nozzles on Sauter mean diameter (SMD) and the evaporation efficiency of the atomization field were analyzed. The results showed that with the increase of the spray angle, the coverage of the droplet in the atomization field was wider, the droplet residence time was longer, the evaporation efficiency of the droplets increased, and the SMD of the atomization field decreased. When the injection angle was greater than 60o, the SMD decreased slowly. With the spray pressure increased, the evaporation efficiency of the droplets increased, and the atomization field SMD decreased. When the pressure was greater than 1.0 MPa, the influence of the spray pressure on SMD was small. With the increase of jet mass flow rate, the evaporation efficiency of the droplets decreased, and the SMD of the atomization field increased. When the flow rate was less than 0.15 kg/s, the SMD had not much increase. The larger the horizontal distance between two nozzles, the wider the droplet distribution, but the horizontal distance had less impact on the atomization field SMD. Under certain conditions, when the nozzle distance was about 800 mm, the cross-sectional velocity distribution was more uniform.
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