Simulation and experimental verification of a hydrodynamic model for a dual fluidized Bed gasifier

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	Simulation and experimental verification of a hydrodynamic model for a dual fluidized Bed gasifier
	Wang, Xueyao 1,2; Lei, Jing 3; Xu, Xiang 1,2; Ma, Zhengzhong 4; Xiao, Yunhan 1,2
刊名	POWDER TECHNOLOGY
	2014-04-01
卷号	256 页码:324-335
关键词	Dual fluidized bed gasifier Energy-minimization multi-scale model Multiphase flow CFD simulation Hydrodynamics
英文摘要	We propose a revised 2-D energy-minimization multi-scale (EMMS) model based on a two-fluid model to perform the hydrodynamic character analysis of a pilot-scale full-loop dual fluidized bed gasifier (DFBG), which consists of a riser, a cyclone with a down-comer, a bubbling fluidized bed (BFB), and a loop-seal. The EMMS model is used to analyze the interaction force between the gas and solid phases in the DFBG. For comparison, O'Brien & Syamlal's drag heterogeneous force coefficient correction is also analyzed. The instantaneous particle profiles are described by the calculated results. The local and overall flow characteristics are determined by the solids concentration under different fluidization conditions. The effects of the gas velocities in the riser and the recycle gas velocities in the U loop seal on the axial solids concentration and solids circulation profiles, as well as the flow heterogeneity in sub-zones of the riser are investigated. The numerical results are in good agreement with the experimental data, indicating that the EMMS model is appropriate to simulate the heterogeneous gas-solids two-phase flow in DFBG. (C) 2014 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	GAS-SOLID FLOW ; ELECTRICAL CAPACITANCE TOMOGRAPHY ; BIOMASS STEAM GASIFICATION ; CFD SIMULATION ; PARTICLE FLOW ; EMMS MODEL ; RISER ; SYSTEM ; REACTORS ; BEHAVIOR
收录类别	SCI
语种	英语
WOS记录号	WOS:000335097600040
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/106002]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	1.Chinese Acad Sci, Inst Engn Thermophys, Key Lab Adv Energy & Power, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Res Ctr Clean Energy & Power, Lianyungang 222069, Jiangsu, Peoples R China 3.North China Elect Power Univ, Sch Energy & Power Engn, Beijing 102206, Peoples R China 4.Tsinghua Univ, Sch Aerosp, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xueyao,Lei, Jing,Xu, Xiang,et al. Simulation and experimental verification of a hydrodynamic model for a dual fluidized Bed gasifier[J]. POWDER TECHNOLOGY,2014,256:324-335.
APA	Wang, Xueyao,Lei, Jing,Xu, Xiang,Ma, Zhengzhong,&Xiao, Yunhan.(2014).Simulation and experimental verification of a hydrodynamic model for a dual fluidized Bed gasifier.POWDER TECHNOLOGY,256,324-335.
MLA	Wang, Xueyao,et al."Simulation and experimental verification of a hydrodynamic model for a dual fluidized Bed gasifier".POWDER TECHNOLOGY 256(2014):324-335.