不同浸渍管参数下RH装置内钢液流动行为

Fluid Flow in RH Reactor Under Different Parameters of Immersion Tubes

采用均相流模型考察了不同浸渍管参数对RH装置内流场的影响。数值结果表明,偏心移动浸渍管时,在真空室底部、真空室及钢包钢液表面的下降管处发现较大的漩涡,但对循环流量影响较小;减小浸渍管间距,真空室左侧壁面的回流增强,循环流量减小;减小浸渍管插入深度,循环流量增大。在RH设备设计中,在不发生钢渣卷混的前提下,尽量减小浸渍管插入深度或增大浸渍管间距可提高钢液循环流量。

The homogeneous model was used to study the fluid flow in RH reactor with different parameters of immersion tubes. While the immersion tubes are located eccentrically, larger eddies appear near the down immersion tube at the bottom of vacuum chamber, under free surface of vacuum chamber and in ladle, but no obvious effect on the recirculation flow rate was observed. While the distance between two tubes is decreased, the recirculation flow rate decreases, and the reeirculation near the left wall of the vacuum chamber is enhanced. The recirculation flow rate increases with the immersion depth. In order to increase the recirculation flow rate, either the immersion depth of immersion tubes should be reduced or the distance between immersion tubes, should be increased and if slag entrapment should be avoided at same time.