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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
Source PublicationPOWDER TECHNOLOGY
ISSN0032-5910
Volume321Issue:NOVPages:13-30
Abstract

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.

KeywordComputational Fluid Dynamics Reaction Momentum Transfer Mass Transfer
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.powtec.2017.07.081
Indexed BySCI
Language英语
WOS KeywordMASS-TRANSFER MODEL ; SOLID RISER FLOWS ; CFD SIMULATION ; GAS ; COEFFICIENT ; DISPERSION ; STRIPPERS ; REACTOR
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationState Key Development Program for Basic Research of China (973 Program)(2015CB251402) ; National Natural Science Foundation of China(21206159 ; 21676266)
WOS IDWOS:000412963800003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23280
Collection多相复杂系统国家重点实验室
Affiliation1.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
Recommended Citation
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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