CFD技术在Φ16m等大型种分槽的研究与应用

Research and application of CDF technology to Φ16m large seed precipitators

近年来，新建氧化铝生产线向大型化发展，需要开发直径中16～20m甚至更大种分槽。现有种分槽搅拌研发技术手段落后，而Intermig和CBY搅拌装置沉淀结疤严重且能耗偏高，也无法满足大型种分槽的要求。我们采用软件模拟仿真技术，用自主研发的HSG／HQG高性能搅拌装置，研发成功Ф16X（37-42）m系列种分槽。本文对中16～20m种分槽HSG／HQG和Intermig搅拌装置进行了数值模拟对比分析，结合Ф16×（37～42）m系列种分槽实际应用情况，验证了高性能搅拌仿真模拟技术准确可靠、技术先进，采用HSG／HQG高性能搅拌装置的中16m种分槽具有低能耗、低沉淀结疤等优良的使用效果。

In recent years, the new alumina production line towards maximization, the diameter of Ф16 ~ 20m and more than these of seed precipitators need to be developed. Existing agitating device development and research technological means for the seed precipitator is backwardness, the Intermig and CBY agitating devices have serous scale and precipitation, and high energy consumption, so the requirements for the large seed precipitator cant be met. The Ф16× （37 ~ 42 ）m series seed precipitators are successfully developed by using CFD technology and HSG/HQG agitating device with high perform- ance of independent development. In this paper the comparative analysis and numerical simulation are completed for HSG/HQG and Intermig agitating de- vice, combining with the practical application situations of Ф16 × （37 ~ 42 ）m series seed precipitators, it is verified that agitating simulation technology with high performance is accurate, reliable and advanced and the Ф16 seed precipitator using HSG/HQG agitating device with high performance has char- acterized by low power consumption and few scale and precipitation.