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A model for improving the Euler-Euler two-phase flow theory to predict chemical reactions in circulating fluidized beds
Hou, Baolin1; Wang, Xiaodong1; Zhang, Tao1; Li, Hongzhong2
2017-11-01
发表期刊POWDER TECHNOLOGY
ISSN0032-5910
卷号321期号:NOV页码:13-30
摘要

In this paper, a model of predicting the reaction in CFB was developed by coupling some developed sub-grid models into the Euler-Euler two-phase flow model (TFM) with the relatively coarse mesh. In this model, the local heterogeneous flow structural parameters were obtained by solving the momentum and mass conservation equations and using some widely accepted semi-empirical equations, for example, the well-known Ergun and Richardson-Zaki equation. The heterogeneous fluid flow was resolved by coupling the momentum transfer coefficient based on the local heterogeneous structural parameters into the TFM model. The gas-solid mass transfer coefficient in terms of the local heterogeneous fluid flow was obtained in the assumed process, which was completely dominated by the gas-solid mass transfer. And then, the reaction was predicted by solving the balance equation between the mass transfer and chemical reaction. This method improves the general applicability of developed model and reduces the calculating process, and which has been verified by the ozone decomposition reaction in CFB from the literature. (C) 2017 Elsevier B.V. All rights reserved.

关键词Computational Fluid Dynamics Reaction Momentum Transfer Mass Transfer
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.powtec.2017.07.081
收录类别SCI
语种英语
关键词[WOS]MASS-TRANSFER MODEL ; SOLID RISER FLOWS ; CFD SIMULATION ; GAS ; COEFFICIENT ; DISPERSION ; STRIPPERS ; REACTOR
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者State Key Development Program for Basic Research of China (973 Program)(2015CB251402) ; National Natural Science Foundation of China(21206159 ; 21676266)
WOS记录号WOS:000412963800003
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23280
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, POB 353, Beijing 100190, Peoples R China
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GB/T 7714
Hou, Baolin,Wang, Xiaodong,Zhang, Tao,et al. A model for improving the Euler-Euler two-phase flow theory to predict chemical reactions in circulating fluidized beds[J]. POWDER TECHNOLOGY,2017,321(NOV):13-30.
APA Hou, Baolin,Wang, Xiaodong,Zhang, Tao,&Li, Hongzhong.(2017).A model for improving the Euler-Euler two-phase flow theory to predict chemical reactions in circulating fluidized beds.POWDER TECHNOLOGY,321(NOV),13-30.
MLA Hou, Baolin,et al."A model for improving the Euler-Euler two-phase flow theory to predict chemical reactions in circulating fluidized beds".POWDER TECHNOLOGY 321.NOV(2017):13-30.
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