基于CFD建模的生物氧化槽空气分散器结构优化研究
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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.
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.
引文
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[2]涂博.高砷高硫难处理金矿提金新方法研究[D].武汉:武汉理工大学,2014.
[3]蔡鑫,南新元,高丙朋,等.生物氧化预处理过程中进气量预测智能集成模型的建立[J].湿法冶金,2016,35(4):288-292.
[4]谢纪元,刘青廷,朱战胜.烟台市黄金冶炼厂金精矿生物氧化—氰化提金工艺[J].黄金,2003,24(9):31-32.
[5]方兆珩.生物氧化浸矿反应器的研究进展[J].黄金科学技术,2002,10(6):1-7.
[6]董干国,李晔,杨丽君,等.一种新型生物氧化反应器的研制[J].有色金属(冶炼部分),2013(9):52-55.
[7]孔珑.工程流体力学[M].4版.北京:中国电力出版社,2014.
[8]钟丽,黄雄斌,贾志刚.固-液搅拌槽内颗粒离底悬浮临界转速的CFD模拟[J].北京化工大学学报(自然科学版),2003,30(6):18-22.
[9]钟丽.搅拌槽内固-液悬浮的数值模拟[D].北京:北京化工大学,2003.
[10]贾爱迪.生物氧化预处理氧化槽进气量与气液混合相流场的关系研究[D].乌鲁木齐:新疆大学,2017.
[11]SUN D,LV J,WALLER S T.In-depth analysis of traffic congestion using computational fluid dynamics(CFD)modeling method[J].Journal of Modern Transportation,2011,19(1):58-67.
[12]赫新,张来平,赵钟,等.大型通用CFD软件体系结构与数据结构研究[J].空气动力学学报,2012,33(5):557-565.
[13]姜振廷,郑忠才,董旭.基于ANSYS WORKBENCH的六自由度机械臂有限元分析及结构优化[J].制造业自动化,2014,36(1):109-110.
[14]张乃龙,杨文通,费仁元.基于ANSYS的抗性消声器性能仿真分析[J].计算机仿真,2006,23(8):306-310.
[15]LI Q,YU G C,LIU S L.Application of computational fluiddynamicsandfluidstructureinteraction techniques for calculating the 3D transient flow of journal bearings coupled with rotor systems[J].Chinese Journal of Mechanical Engineering,2012,25(5):926-932.
[16]叶方博.电子式供氧调节器的数值模拟[D].南京:南京航空航天大学,2013.