铝电解槽上烟道内的烟气流动场数值模拟研究

The numerical simulation research of gas flow field in aluminum reduction cell upper ducts

本文利用大型商业软件FLUENT对铝电解槽集气上烟道结构内(非全槽)的烟气流动场进行了数值模拟,并通过模拟全槽区域的温度场与流动场对非全槽模型的仿真结果和热平衡测试进行了验证,同时以仿真结果为基础成功优化设计出了适用于SY500系列电解槽的等量吸风六段集气上烟道结构。经过多项工程实践证明,该上烟道结构使用效果良好,在槽膛内集气均匀,可减小电解槽排烟量和降低槽上散热量,提高电解槽密闭效率和减少电解车间污染物排放,为电解槽实现节能减排提供了可靠保障。

Based on FLUENT software, the flow field of gas in aluminum reduction cell upper duct was simulated. The result was proved by thermal field and flow field of gas in whole cell zone model and heat balance test. Based on simulation result, the six multi - upper equable suction ducts were developed and designed for SY500 aluminum reduction cells. Many of engineering practices were successful proved that the equable suction upper duct could help to get good hood efficiency for aluminum reduction cells, cut down fume and heat dissipating from anode cover, and decrease the pollutant of emission , and get the target of energy conservation and emission reduction finally.