Multi-scale CFD simulation of gas-solid flow in MIP reactors with a structure-dependent drag model

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	Multi-scale CFD simulation of gas-solid flow in MIP reactors with a structure-dependent drag model
	Lu, Bona ; Wang, Wei ; Li, Jinghai ; Wang, Xianghui ; Gao, Shiqiu ; Lu, Weimin ; Xu, Youhao ; Long, Jun
刊名	CHEMICAL ENGINEERING SCIENCE
	2007-09-01
卷号	62 期号:18-20 页码:5487-5494
关键词	simulation multi-scale structure fluidization drag force flow regime choking
ISSN号	0009-2509
其他题名	Chem. Eng. Sci.
中文摘要	The MIP (maximizing iso-paraffins) reactor, which was developed by SINOPEC to meet the challenge for clean fuels, consists of a series of reaction zones with different diameters, thus allowing coexistence of multiple flow regimes. This study is to probe the flow behavior in the MIP reactor through computational fluid dynamics (CFD) simulation, in which a new drag-coefficient relation based on the energy minimization multi-scale (EMMS) model was applied. A testing simulation of a lab-scale MIP reactor validates our approach first; further investigation of an industrial MIP reactor indicates that, the so-called "choking" phenomenon, which is characterized by an S-shaped profile of voidage and saturation carrying of particles, also exists in the MIP reactor. This choking phenomenon deserves our reemphasis, since most of the existent simulations take for granted that, a riser flow can be determined by specification of only gas and solids velocities, ignoring the effect of solids inventory. In practice, understanding of the "choking" may facilitate troubleshooting of MIP units, as the related flow and transition behaviors are critical to the reaction performance. In general, this simulation unfolds a fresh perspective of the EMMS-based multi-scale CFD approach. (c) 2007 Elsevier Ltd. All rights reserved.
英文摘要	The MIP (maximizing iso-paraffins) reactor, which was developed by SINOPEC to meet the challenge for clean fuels, consists of a series of reaction zones with different diameters, thus allowing coexistence of multiple flow regimes. This study is to probe the flow behavior in the MIP reactor through computational fluid dynamics (CFD) simulation, in which a new drag-coefficient relation based on the energy minimization multi-scale (EMMS) model was applied. A testing simulation of a lab-scale MIP reactor validates our approach first; further investigation of an industrial MIP reactor indicates that, the so-called "choking" phenomenon, which is characterized by an S-shaped profile of voidage and saturation carrying of particles, also exists in the MIP reactor. This choking phenomenon deserves our reemphasis, since most of the existent simulations take for granted that, a riser flow can be determined by specification of only gas and solids velocities, ignoring the effect of solids inventory. In practice, understanding of the "choking" may facilitate troubleshooting of MIP units, as the related flow and transition behaviors are critical to the reaction performance. In general, this simulation unfolds a fresh perspective of the EMMS-based multi-scale CFD approach. (c) 2007 Elsevier Ltd. 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]	CIRCULATING FLUIDIZED-BED ; TURBULENT FLUIDIZATION ; 2-PHASE FLOW ; RISER ; REGIMES
收录类别	ISTP ; SCI
原文出处	://WOS:000249572700105
语种	英语
WOS记录号	WOS:000249572700105
公开日期	2013-10-15
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/3402]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.SINOPEC, Res Inst Petr Proc, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Lu, Bona,Wang, Wei,Li, Jinghai,et al. Multi-scale CFD simulation of gas-solid flow in MIP reactors with a structure-dependent drag model[J]. CHEMICAL ENGINEERING SCIENCE,2007,62(18-20):5487-5494.
APA	Lu, Bona.,Wang, Wei.,Li, Jinghai.,Wang, Xianghui.,Gao, Shiqiu.,...&Long, Jun.(2007).Multi-scale CFD simulation of gas-solid flow in MIP reactors with a structure-dependent drag model.CHEMICAL ENGINEERING SCIENCE,62(18-20),5487-5494.
MLA	Lu, Bona,et al."Multi-scale CFD simulation of gas-solid flow in MIP reactors with a structure-dependent drag model".CHEMICAL ENGINEERING SCIENCE 62.18-20(2007):5487-5494.