黄磷脱砷装置中分相器的CFD数值模拟研究

摘要

介绍了黄磷脱砷工艺及该工艺中黄磷-双氧水分相器的基本结构、工作原理、优点和应用,着重研究了分相器旋流腔内流场特性。由于通过实验的方法无法全面地揭示其流场性质,采用计算流体力学的方法,用Gambit对该分相器进行几何建模、网格划分和边界条件的定义,应用Fluent软件,选用雷诺应力模型(RSM模型)作为湍流模型对黄磷-双氧水分相器进行了数值模拟计算,得到分相器内部流场、速度场和压力场的信息,还有黄磷体积分数等物理量的变化规律,并将数值模拟分离效率与实验结果进行了比较,分析了分相器内部流场的分布规律和两相流的分离特性,为黄磷-双氧水分相器的工业化放大设计提供参考依据。

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	王晓静
	江增
	唐磊

关键词：旋流分相器；计算流体力学；数值模拟；雷诺应力模型(RSM模型)；分离效率

Abstract：

The paper briefly introduces the dearsenifying process of yellow phosphorus and the basic structure, working principle, advantages and application of cyclone separator used in P-H₂O₂ treatment, emphasizes on the internal flow field in the phase separator. However, the experimental method can not fully reveal the nature of the flow field. In this paper, a CFD modeling methodology is established to simulate the phase separator, making use of the Gambit software to complete the geometric modeling,hybrid grid division and boundary condition assignment. Through selecting the Reynolds stress model (RSM) of Fluent application, computational fluid dynamics (CFD) analysis is performed on the centrifugal cyclone, and inner flow field,velocity field,pressure field and the volume fraction changing tendency of yellow phosphorus in the equipment can be obtained. A comparison between the simulated separating efficiency and tested result was carried on. The results can provide a reliable basis for the industrial scale-up design of the P-H₂O₂ separator.

Keywords： phase separator； CFD； numerical simulation； Reynolds stress model (RSM)； separating efficiency

Received 2013-05-02;

Corresponding Authors: 江增,E-mail:jztju2011@163.com。 Email: jztju2011@163.com

About author: 王晓静(1963-),男,副教授,主要从事固液分离与设备,干燥和造粒技术等的研究。

引用本文:

王晓静, 江增, 唐磊.黄磷脱砷装置中分相器的CFD数值模拟研究[J]. 化学工业与工程, 2015,32(4): 44-49

Wang Xiaojing, Jiang Zeng, Tang Lei.CFD Numerical Simulation on the Phase Separator Equipment for Dearsenication of Yellow Phosphorus[J]. Chemcial Industry and Engineering, 2015,32(4): 44-49

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