您好，欢迎访问福建省农业科学院 机构知识库！
福建省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Numerical simulation of flow hydrodynamics of struvite pellets in a liquid-solid fluidized bed

文献类型： 外文期刊

作者： Ye, Xin 1 ; Chu, Dongyuan 1 ; Lou, Yaoyin 1 ; Ye, Zhi-Long 1 ; Wang, Ming Kuang 3 ; Chen, Shaohua 1 ;

作者机构： 1.Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Pollutant Convers, Xiamen 361021, Peoples R China

2.Xiamen Univ, Coll Environm & Ecol, Xiamen 361102, Peoples R China

3.Fujian Acad Agr Sci, Fuzhou 350003, Fujian, Peoples R China

关键词： Numerical simulation;Flow hydrodynamics;Struvite;Liquid-solid fluidized bed

期刊名称：JOURNAL OF ENVIRONMENTAL SCIENCES （ 影响因子：5.565； 五年影响因子：5.066 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Phosphorus recovery in the form of struvite has been aroused in recent decades for its dual advantages in eutrophication control and resource protection. The usage of the struvite products is normally determined by the size which is largely depended on the hydrodynamics. In this study, flow behavior of struvite pellets was simulated by means of Eulerian-Eulerian two-fluid model combining with kinetic theory of granular flow in a liquid-solid fluidized bed reactor (FBR). A parametric study including the mesh size, time step, discretization strategy, turbulent model and drag model was first developed, followed by the evaluations of crucial operational conditions, particle characteristics and reactor shapes. The results showed that a cold model with the mesh resolution of 16 x 240, default time step of 0.001 sec and first order discretization scheme was accurate enough to describe the fluidization. The struvite holdup profile using Syamlal-O'Brien drag model was best fitted to the experimental data as compared with other drag models and the empirical Richardson-Zaki equation. Regarding the model evaluation, it showed that liquid velocity and particle size played important roles on both solid holdups and velocities. The reactor diameter only influenced the solid velocity while the static bed height almost took no effect. These results are direct and can be applied to guide the operation and process control of the struvite fluidization. Moreover, the model parameters can also be used as the basic settings in further crystallization simulations. (C) 2016 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.

  • 相关文献

[1]The possibility of sustainable pest management by introducing bio-diversity: simulations of pest mite outbreak and regulation. Ogawa, Takuya,Saito, Yutaka,Tsuji, Nobuyuki,Chittenden, Anthony R.,Takada, Takenori,Zhang, Yan-Xuan. 2011

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：福建省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台