留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

湿法提钒搅拌反应釜的流场分布

曹小爽 郑海燕 王琦 沈峰满

曹小爽, 郑海燕, 王琦, 沈峰满. 湿法提钒搅拌反应釜的流场分布[J]. 钢铁钒钛, 2021, 42(4): 6-11. doi: 10.7513/j.issn.1004-7638.2021.04.002
引用本文: 曹小爽, 郑海燕, 王琦, 沈峰满. 湿法提钒搅拌反应釜的流场分布[J]. 钢铁钒钛, 2021, 42(4): 6-11. doi: 10.7513/j.issn.1004-7638.2021.04.002
Cao Xiaoshuang, Zheng Haiyan, Wang Qi, Shen Fengman. Flow field distribution of stirring tank for hydrometallurgical vanadium extraction[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(4): 6-11. doi: 10.7513/j.issn.1004-7638.2021.04.002
Citation: Cao Xiaoshuang, Zheng Haiyan, Wang Qi, Shen Fengman. Flow field distribution of stirring tank for hydrometallurgical vanadium extraction[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(4): 6-11. doi: 10.7513/j.issn.1004-7638.2021.04.002

湿法提钒搅拌反应釜的流场分布

doi: 10.7513/j.issn.1004-7638.2021.04.002
基金项目: 国家自然科学基金资助(52074072,51974073,51774071)
详细信息
    作者简介:

    曹小爽(1994−),女,河北昌黎人,硕士研究生,主要从事烧结优化配矿研究,E-mail:2272956376@qq.com

    通讯作者:

    郑海燕(1973−),女,副教授,E-mail:zhenghy@smm.neu.edu.cn

  • 中图分类号: TF841.3

Flow field distribution of stirring tank for hydrometallurgical vanadium extraction

  • 摘要: 为提高湿法提钒浸出率、掌握机械搅拌反应釜内液相流动和固相分布的规律,使用Fluent软件,基于计算流体力学理论,利用多重参考系法对浸钒搅拌釜内计算区域进行处理,建立多相流欧拉-欧拉模型和标准k-ε湍流模型,研究了搅拌速度v、桨叶离底高度L和带孔挡板对搅拌釜内流场分布的影响。结果表明:随着搅拌速度v的增大,搅拌釜内液相速度先逐渐增大,然后基本保持不变;根据桨叶离底高度L高低对搅拌釜内液相速度分布的影响,将最适宜离底高度选作L=0.4D1;安装带孔挡板有助于消除流场的漩涡现象,改善流场分布。
  • 图  1  搅拌釜结构及ICEM网格划分

    Figure  1.  Structure of stirring tank and ICEM meshing

    图  2  4种搅拌速度下液相速度分布

    Figure  2.  Velocity distribution of liquid phase under four stirring speeds

    图  3  4种搅拌速度下固相体积分数

    Figure  3.  Solid volume fraction diagram under four stirring speeds

    图  4  4种离底高度下液相速度分布

    Figure  4.  Distribution of liquid velocity at four different heights from the bottom

    图  5  4种离底高度下固相体积分数

    Figure  5.  Solid volume fraction diagrams at four different heights from the bottom

    图  6  不同结构下y=0平面速度分布

    Figure  6.  Vector diagram of y=0 plane velocity distribution under different structures

    图  7  不同结构下搅拌釜纵截面速度分布曲线

    Figure  7.  Velocity distribution in longitudinal section of stirring tank under different structures

    表  1  搅拌釜结构参数

    Table  1.   Structure parameters of stirring tank

    搅拌釜直径
    D/mm
    搅拌釜高度
    H/mm
    桨叶直径
    D1/mm
    桨叶离底高度
    L/mm
    轮毂直径
    D2/mm
    搅拌轴直径
    D3/mm
    桨叶个数/
    纵向高度
    Z/mm
    110105600.25D1,0.4D1,0.55D1,0.7D12010352.5
    下载: 导出CSV

    表  2  基本物性参数

    Table  2.   Main material parameters

    物料直径dp/μm密度$\rho $/(kg∙m−3粘度$\eta $/(Pa∙s)体积分数α/%
    钒钛磁铁矿颗粒75~1504500~60005~20
    NaOH溶液10000.001~0.00780~95
    下载: 导出CSV
  • [1] (陈家镛, 杨守志. 湿法冶金的研究与发展[M]. 北京: 冶金工业出版社, 1998: 258−264.)

    Chen Jiayong, Yang Shouzhi. Research and development of wet metallurgy[M]. Beijing: Metallurgical Industry Press, 1998: 258−264.
    [2] Altway H Setyawan, Margono S Winardi. Effect of particle size on simulation of three dimensional solid dispersion in stirred tank[J]. Chemical Engineering Research and Design, 2001,79(8):1011−1016. doi: 10.1205/02638760152721578
    [3] Maurice S Onyango. Mixing in a tank stirred by a Rushton turbine at a low clearance[J]. Chemical Engineering and Processing, 2008,(47):842−851.
    [4] Tamburini A Cipollina, Micale G, Brucato A, et al. CFD simulations of dense soid liquid suspensions in baffled stirred tanks: Prediction of solid particle distribution[J]. Chemical Engineering Journal, 2013,223:857−890.
    [5] Wang Chunlin, Ma Qingyong, Li Tingting, et al. Numerical simulation of solid liquid two phase flow stirring in stirred slurry tank[J]. Irrigation and Drainage Machinery, 2007,25(6):18−22. (王春林, 马庆勇, 李婷婷, 等. 搅拌浆液池固液两相流搅拌的数值模拟[J]. 排灌机械, 2007,25(6):18−22.
    [6] Chen Zhuo, Zhou Ping, Li Peng, et al. Numerical simulation and structure optimization of solid liquid two phase flow in mechanically stirred zinc leaching tank[J]. The Chinese Journal of Nonferrous Metals, 2012,22(6):1836−1841. (陈卓, 周萍, 李鹏, 等. 机械搅拌式锌浸出槽内固液两相流的数值模拟与结构优化[J]. 中国有色金属学报, 2012,22(6):1836−1841.
    [7] Hervey P S, Greaves M. Turbulence flow in an agitated vessel, partI: A predictive model[J]. Chemical Engineering Science, 1982,60(4):195−201.
    [8] Hervey P S, Greaves M. Turbulence flow in an agitated vessel, partII: Numerical solution and model prediction[J]. Chemical Engineering Science, 1982,60(8):201−210.
    [9] Brucato A, Ciofalo M, Grisafi F, et al. Numerical prediction of flow fields in baffled stirred vessels: A comparison of altermative modeling approaches[J]. Chemical Engineering Science, 1998,53(5):365−368.
    [10] Luo J Y, Gosman A D, Issa R I, et al. Full flow field computation of mixing in baffled stirred reactors[J]. Chemical Engineering Science, 1993,71(10):342−344.
    [11] Jaworski Z, Bujalski W, Qtomo N, et al. CFD study of homogenization with dual rushton turbines comparison with experimental results[J]. Chemical Engineering Science, 2000,78(13):327−333.
    [12] Luo J Y, Gosman A D, Issa R I, et al. Prediction of impeller induced flows in mixing vessels using multiple frames of reference[J]. Chemical Engineering Science, 1994,52(6):549−556.
    [13] (李鹏飞, 徐敏义, 王飞飞. 精通CFD工程仿真与案例实战[M]. 北京: 人民邮电出版社, 2011: 162−186.)

    Li Pengfei, Xu Minyi, Wang Feifei. Fluent in CFD engineering simulation and case combat[M]. Beijing: Posts and Telecommunications Press, 2011: 162−186.
    [14] (盖得. 希特斯洛尼. 多相流动和传热手册[M]. 北京: 机械工业出版社, 1993: 15−23.)

    Hitsloni G. Handbook of multiphase flow and heat transfer[M]. Beijing: China Machine Press, 1993: 15−23.
    [15] Mao Zaisha. Particle swarm optimization: the basis of multi-scale numerical simulation of multiphase flow[J]. Journal of Process Engineering, 2008,8(4):645−659. (毛在砂. 颗粒群研究: 多相流多尺度数值模拟的基础[J]. 过程工程学报, 2008,8(4):645−659. doi: 10.3321/j.issn:1009-606X.2008.04.003
    [16] Cheng Jingcai, Mao Zaisha, Yang Chao. Numerical simulation of liquid solid solid three phase flow in stirred tank[J]. Chemical Reaction Engineering and Technology, 2008,24(2):97−102. (程景才, 毛在砂, 杨超. 搅拌槽内液固固三相流数值模拟研究[J]. 化学反应工程与工艺, 2008,24(2):97−102. doi: 10.3969/j.issn.1001-7631.2008.02.001
  • 加载中
图(7) / 表(2)
计量
  • 文章访问数:  246
  • HTML全文浏览量:  51
  • PDF下载量:  20
  • 被引次数: 0
出版历程
  • 收稿日期:  2021-04-21
  • 刊出日期:  2021-08-10

目录

    /

    返回文章
    返回