Investigation of pot tightness and fugitive emissions based on CFD simulation
This paper presents a CFD modeling procedure to study the fugitive emissions from pots under a variety of scenarios in terms of outdoor weather conditions, hood tightness and pot ventilation rate.The method relies on three coupled sub-models representing different length scales of the system, namely a larger potroom sub-model, a sub-model zooming on the pot itself, and finally, a sub-model including the pot cavity under the hoods.The CFD results provide a convenient way to visualize the flow pattern and HF concentration field within the pot and potroom under different conditions.The approach reveals that pot gases leakage into the potroom can occur when the gap between hoods is too large or when the pot ventilation flow rate is reduced too much.In the simulated scenarios, leakage (when present) is always occurring at the gap around the anode rods.
Pot tightness fugitive emissions leakage CFD simulations
Ruijie Zhao Louis Gosselin Mario Fafard
Department of Mechanical Engineering, Université Laval, Québec City, QC, Canada;REGAL-Aluminium Rese Department of Civil and Water Engineering, Université Laval, Québec City, QC, Canada;REGAL-Aluminium
国际会议
32th International Conference & Exhibition ICSOBA-2014(第32届国际铝土矿、氧化铝和铝工业技术学术年会)
郑州
英文
419-427
2014-10-12（万方平台首次上网日期，不代表论文的发表时间）