Numerical investigation of the influence of kinetics and shape factor on barium sulfate precipitation in a continuous stirred tank

doi:10.1007/s11705-009-0023-x

Front Chem Eng Chin

2009, Vol. 3

Issue (3) : 272-281 https://doi.org/10.1007/s11705-009-0023-x

RESEARCH ARTICLE

Numerical investigation of the influence of kinetics and shape factor on barium sulfate precipitation in a continuous stirred tank

Zheng WANG^1,2, Zai-Sha MAO¹, Chao YANG¹(

), Qinghua ZHANG¹, Jingcai CHENG¹

1. National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; 2. State Key Laboratory of Chemical Safety and Control, SINOPEC Qingdao Research Institute of Safety Engineering, Qingdao 266071, China

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Abstract

The effect of kinetics and shape factor on barium sulfate precipitation in a continuous stirred tank has been investigated numerically through solving the standard momentum and mass transport equations in combination with the moment equations for crystal population balance. The numerical method was validated with the literature data. The simulated results include the distribution of the local supersaturation ratio in the reactor, the mean crystal size, and the coefficient of variation. The simulation results show that the value of shape factor used in the model affected greatly the mean crystal size and the moments of the crystal size distribution. The influence of the kinetic expressions on the simulation is also analyzed. It is important to investigate the relationship of the shape factor with the precipitator type and other operation conditions to obtain reliable simulation results and suitable kinetic equations of crystal nucleation and growth rates.

Keywords stirred tank numerical simulation precipitation shape factor crystal kinetics

Corresponding Author(s): YANG Chao,Email:chaoyang@home.ipe.ac.cn

Issue Date: 05 September 2009

Cite this article:

Zheng WANG,Zai-Sha MAO,Chao YANG, et al. Numerical investigation of the influence of kinetics and shape factor on barium sulfate precipitation in a continuous stirred tank[J]. Front Chem Eng Chin, 2009, 3(3): 272-281.

URL:

https://academic.hep.com.cn/fcse/EN/10.1007/s11705-009-0023-x
https://academic.hep.com.cn/fcse/EN/Y2009/V3/I3/272

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