基于CFD建模的生物氧化槽空气分散器结构优化研究  

Structural Optimization of Air Disperser in Biooxidation Tank Based on CFD Modeling

作　　者：孙玉杰 南新元[1] 孙明[1] SUN Yu-jie;NAN Xin-yuan;SUN Ming(School of Electrical Engineering,Xinjiang University,Urumqi 830047,China)

机构地区：[1]新疆大学电气工程学院,乌鲁木齐830047

出　　处：《有色金属（冶炼部分）》2018年第11期23-27,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(61463047)

摘　　要：针对生物氧化槽充气效率低,能耗高的问题,利用CFD软件对氧化提金的生物氧化预处理过程进行数值模拟,分析了氧化槽内气体分布情况以及空气分散器的结构半径对氧化槽中气体浓度的影响。结果表明,氧化槽内气体在越接近空气分散器位置时气体浓度越高,距离空气分散器越远时气体浓度越低;空气分散器结构直径在2～5m时,随着空气分散器直径的增大,在氧化槽高度9m处的气体浓度增大。当直径大于5m时,气体浓度达到1.225 8kg/m^3后不变。To address low volumetric efficiency and high energy consumption of biological oxidation tank,biological oxidation pretreatment was numerically simulated with CFD software.Gas distribution in oxidation tank and effect of structure radius of air disperser on gas concentration in oxidation tank were investigated.The results show that the closer the gas in oxidation tank is to position of air disperser,the higher the gas concentration is,and the farther away the air disperser is,the lower the gas concentration is.When structure diameter of air disperser is of 2～5 m,gas concentration at the height of 9 m of oxidation tank rises with increase of diameter of air disperser.When diameter is bigger than 5 m,gas concentration will remain unchanged after reaching 1.255 8 kg/m^3.

关 键 词：生物氧化槽 空气分散器 CFD建模 气体浓度 结构优化 

分 类 号：TF831[冶金工程—有色金属冶金]