Multifluid Modeling of Mixing and Segregation of Binary Gas-Solid Flow in a Downer Reactor for Coal Pyrolysis

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 研究所（批量导入）

	Multifluid Modeling of Mixing and Segregation of Binary Gas-Solid Flow in a Downer Reactor for Coal Pyrolysis
	Shu, Zhan 1,2; Wang, Junwu 1; Fan, Chuigang 1; Li, Songgeng 1
刊名	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
	2014-06-11
卷号	53 期号:23 页码:9915-9924
关键词	CIRCULATING FLUIDIZED-BED PARTICLE HEAT-TRANSFER COUNTERCURRENT DOWNER NUMERICAL-SIMULATION EULERIAN SIMULATION DISCRETE ELEMENT CFD SIMULATION HYDRODYNAMICS BEHAVIOR EMMS
ISSN号	0888-5885
其他题名	Ind. Eng. Chem. Res.
中文摘要	The mixing and segregation characteristics of different types of solid particles in a downer reactor are of fundamental importance in the pyrolysis of low-rank coals where sand particles are used as the heat carrier. However, relevant fundamental studies are seldom reported. This work presents a computational investigation of the hydrodynamic behavior of binary gas-solid flows in a downer using an Eulerian-Eulerian method with a modified gas-solid drag force model, taking the effect of mesoscale particle clustering structures into consideration. Three-dimensional CFD simulations were carried out and the results obtained were compared with the experimental data available in literature. It was shown that a reasonable agreement with experimental data can be obtained with the proposed drag modification. The segregation/mixing behavior in the downer was then analyzed with two popular methods, which results in the conclusion that the solid particles in the downer reactor can mix reasonably well, therefore offering theoretical support to the idea of coal pyrolysis using sand particles as the heat carrier.
英文摘要	The mixing and segregation characteristics of different types of solid particles in a downer reactor are of fundamental importance in the pyrolysis of low-rank coals where sand particles are used as the heat carrier. However, relevant fundamental studies are seldom reported. This work presents a computational investigation of the hydrodynamic behavior of binary gas-solid flows in a downer using an Eulerian-Eulerian method with a modified gas-solid drag force model, taking the effect of mesoscale particle clustering structures into consideration. Three-dimensional CFD simulations were carried out and the results obtained were compared with the experimental data available in literature. It was shown that a reasonable agreement with experimental data can be obtained with the proposed drag modification. The segregation/mixing behavior in the downer was then analyzed with two popular methods, which results in the conclusion that the solid particles in the downer reactor can mix reasonably well, therefore offering theoretical support to the idea of coal pyrolysis using sand particles as the heat carrier.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	CIRCULATING FLUIDIZED-BED ; PARTICLE HEAT-TRANSFER ; COUNTERCURRENT DOWNER ; NUMERICAL-SIMULATION ; EULERIAN SIMULATION ; DISCRETE ELEMENT ; CFD SIMULATION ; HYDRODYNAMICS ; BEHAVIOR ; EMMS
收录类别	SCI
原文出处	://WOS:000337337000042
语种	英语
WOS记录号	WOS:000337337000042
公开日期	2014-08-28
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/10957]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100490, Peoples R China
推荐引用方式 GB/T 7714	Shu, Zhan,Wang, Junwu,Fan, Chuigang,et al. Multifluid Modeling of Mixing and Segregation of Binary Gas-Solid Flow in a Downer Reactor for Coal Pyrolysis[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2014,53(23):9915-9924.
APA	Shu, Zhan,Wang, Junwu,Fan, Chuigang,&Li, Songgeng.(2014).Multifluid Modeling of Mixing and Segregation of Binary Gas-Solid Flow in a Downer Reactor for Coal Pyrolysis.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,53(23),9915-9924.
MLA	Shu, Zhan,et al."Multifluid Modeling of Mixing and Segregation of Binary Gas-Solid Flow in a Downer Reactor for Coal Pyrolysis".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 53.23(2014):9915-9924.