Experimental validation of the gas-solid flow in the CFB riser

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	Experimental validation of the gas-solid flow in the CFB riser
	Wang, Xueyao; Liao, Liangliang; Fan, Baoguo; Jiang, Fan; Xu, Xiang; Wang, Shengdian; Xiao, Yunhan
刊名	FUEL PROCESSING TECHNOLOGY
	2010-08-01
卷号	91 期号:8 页码:927-933
关键词	CFB riser EMMS model Gas-solid flow Exit effects
英文摘要	In this paper, an experimental study is performed to investigate the flow structure in a circulating fluidized bed (CFB). The typical core-annulus structure and small amount of back-mixing of particles near the wall of the riser were observed. The axial solid concentration distributions contain a dilute region towards the up-middle zone and a dense region near the bottom and the top exit zones. Furthermore, the solid concentration decreases with the increase of the superficial gas velocity, and increases with the increment of the circulation rate at the same height position. The total pressure drop of the main bed represents a linear relationship with the solid flux rate. In the dense phase zone, the solid concentration increases linearly with the augmentation of the solid flux, however, the change of the solid concentration is slight, even unchangeable at the up zones. In addition, based on the Energy-Minimization Multi-Scale (EMMS) method, a revised drag force model is proposed, which is coupled in the Eulerian two-fluid model for simulating the flow structure in the riser. Numerical results are consistent with the experimental data, which indicate the revised drag force model is very successful in simulating flow structure of the dense gas-solid two-phase flow. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Applied ; Energy & Fuels ; Engineering, Chemical
研究领域[WOS]	Chemistry ; Energy & Fuels ; Engineering
关键词[WOS]	CIRCULATING FLUIDIZED-BEDS ; DENSITY ; SIMULATION ; MODEL ; EXIT
收录类别	SCI
语种	英语
WOS记录号	WOS:000279857400022
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/106464]
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	Chinese Acad Sci, Key Lab Adv Energy & Power, Inst Engn Thermophys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xueyao,Liao, Liangliang,Fan, Baoguo,et al. Experimental validation of the gas-solid flow in the CFB riser[J]. FUEL PROCESSING TECHNOLOGY,2010,91(8):927-933.
APA	Wang, Xueyao.,Liao, Liangliang.,Fan, Baoguo.,Jiang, Fan.,Xu, Xiang.,...&Xiao, Yunhan.(2010).Experimental validation of the gas-solid flow in the CFB riser.FUEL PROCESSING TECHNOLOGY,91(8),927-933.
MLA	Wang, Xueyao,et al."Experimental validation of the gas-solid flow in the CFB riser".FUEL PROCESSING TECHNOLOGY 91.8(2010):927-933.