提升气流量与浸渍管插入深度对RH精炼影响的研究

Study on the Influence of Lift Gas Flow Rate and Snorkel Insertion Depth on RH Refining

基于相似原理,建立了几何相似比为1∶4的水模型,并在工业生产中进行了试验,对RH精炼过程中提升气流量与浸渍管插入深度的影响进行了考察。结果表明:提升气流量对循环流量、混匀时间和工业生产中实际脱氢效果均比较明显,随提升气流量的增加,循环流量增加但增幅降低、混匀时间降低,但实际生产中的脱氢效果先变好后变差;浸渍管插入深度对循环流量影响不大,对混匀时间有一定影响,随插入深度的增加混匀时间先减小后增加;提升气流量与插入深度对脱氢的影响主要体现在高真空处理前期。

Based on the similarity principle,a water model with the scale of 1∶4 was established and tested in industrial production.The effects of increasing gas flow rate and the depth of snorkel insertion in the RH refining process have been studied.The results show that the effects of increasing gas flow rate on has obvious effect on circulating flow,mixing time and actual Dehydrogenation in industrial production.With the increase of the increasing gas flow rate,the circulating flow increases but the increase decreases,and the mixing time decreases.The hydrogen effect becomes better first and then worse;the insertion depth of the snorkel has little effect on the circulation flow rate,and has a certain effect on the mixing time.As the insertion depth increases,the mixing time decreases first and then increases.The effect of increasing flow and insertion depth upon Dehydrogenation mainly happens on the early stage of high vacuum treatment.