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CFD simulation of gas-solid two-phase flow and mixing in a FCC riser with feedstock injection
Chen, Sheng1,2; Fan, Yiping1; Yan, Zihan1; Wang, Wei2; Lu, Chunxi1
2016
Source PublicationPOWDER TECHNOLOGY
ISSN0032-5910
Volume287Issue:JANPages:29-42
AbstractThe 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.
KeywordFluid Catalytic Cracking (Fcc) Feedstock Injection Scheme Nozzle Emms Secondary Flow Computational Fluid Dynamics (Cfd)
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.powtec.2015.09.005
Indexed BySCI
Language英语
WOS KeywordCIRCULATING FLUIDIZED-BED ; SECONDARY AIR INJECTION ; FILTERED 2-FLUID MODELS ; KINETIC-THEORY ; EMMS MODEL ; CONSTITUTIVE RELATIONS ; NUMERICAL-SIMULATION ; PARTICLE FLOWS ; MULTISCALE CFD ; COKE FORMATION
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Key Basic Research Development Program of China (973 Program)(2012CB215000) ; National Natural Science Foundation of China(91334204)
WOS IDWOS:000365363900004
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19864
Collection多相复杂系统国家重点实验室
Affiliation1.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
Recommended Citation
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.
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