CFD simulation of gas-solid two-phase flow and mixing in a FCC riser with feedstock injection

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	CFD simulation of gas-solid two-phase flow and mixing in a FCC riser with feedstock injection
	Chen, Sheng 1,2; Fan, Yiping 1; Yan, Zihan 1; Wang, Wei 2; Lu, Chunxi 1
刊名	POWDER TECHNOLOGY
	2016
卷号	287 期号:JAN 页码:29-42
关键词	Fluid Catalytic Cracking (FCC) Feedstock injection scheme Nozzle EMMS Secondary flow Computational Fluid Dynamics (CFD)
ISSN号	0032-5910
英文摘要	The feedstock injection zone is a key section for Fluid Catalytic Cracking riser reactor. A 3-D Computational Fluid Dynamics simulation is performed by coupling the two-fluid model and the energy-minimization multi-scale (EMMS) drag. The prediction agrees well with the available data and the secondary flow phenomenon is captured. The simulation reveals that the M-shape distributed feed sprays interact with the W-shape distributed solid particles and then cause the undesirable W-shape distribution of the matching ratio of catalysts to feed. The transformation of such uneven distribution to the finally core-annular distribution heavily depends on the secondary flow, whereas its mechanism can be explained by using the Kutta-joukowski lift theorem. The increase of the feed spray velocity facilitates the feed diffusion and reduces the transition region. However, excessively high jet velocity may intensify the back-mixing near the wall and causes intense attrition or breakage of catalysts and thereby an increase of costs. (C) 2015 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]	CIRCULATING FLUIDIZED-BED ; SECONDARY AIR INJECTION ; FILTERED 2-FLUID MODELS ; KINETIC-THEORY ; EMMS MODEL ; CONSTITUTIVE RELATIONS ; NUMERICAL-SIMULATION ; PARTICLE FLOWS ; MULTISCALE CFD ; COKE FORMATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000365363900004
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/19864]
专题	过程工程研究所_多相复杂系统国家重点实验室
作者单位	1.China Univ Petr, State Key Lab Heavy Oil, Beijing 102249, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Chen, Sheng,Fan, Yiping,Yan, Zihan,et al. CFD simulation of gas-solid two-phase flow and mixing in a FCC riser with feedstock injection[J]. POWDER TECHNOLOGY,2016,287(JAN):29-42.
APA	Chen, Sheng,Fan, Yiping,Yan, Zihan,Wang, Wei,&Lu, Chunxi.(2016).CFD simulation of gas-solid two-phase flow and mixing in a FCC riser with feedstock injection.POWDER TECHNOLOGY,287(JAN),29-42.
MLA	Chen, Sheng,et al."CFD simulation of gas-solid two-phase flow and mixing in a FCC riser with feedstock injection".POWDER TECHNOLOGY 287.JAN(2016):29-42.