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Modeling of complex liquid-solid flow of particle swelling in slurry loop reactors
Zhou, Rongtao1,2; Chen, Jianhua1; Yang, Ning1; Li, Jinghai1; Fernandez, Alvaro3; Ricoux, Philippe4
2018-02-02
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume176Issue:00Pages:476-490
Abstract

A swelling-dependent two-fluid model (STFM) is developed for the liquid-solid flows of swelling particles in polyethylene reactors. The model integrates the two-fluid model (TFM) with a species transport equation (STE) to account for the diffusion of alkane molecules from the liquid bulk to the amorphous region of particles, and a population balance equation (PBE) to consider the aggregation of swelling particles. Simulations show that only the TFM fails to capture the main features of swelling systems. By contrast, the STFM captures the gradual increase of power consumption due to particle swelling and aggregation, which agrees with the experiments in a stirred tank. The STFM predicts also the slug formation and a sharp increase of power consumption in a slurry loop reactor as well as the solid accumulation behind pump. The difference of model prediction for stirred tanks and loop reactors suggests the potential of reactor optimization by enhancing local mixing while still keeping high solid concentration for productivity. (C) 2017 Elsevier Ltd. All rights reserved.

KeywordCfd Simulation Pbe Polyethylene Swelling Loop Reactor Mesoscale
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ces.2017.11.012
Indexed BySCI
Language英语
WOS KeywordCirculating Fluidized-beds ; Kinetic-theory ; Cfd Simulation ; Bubble-columns ; A-particles ; Gas ; Hydrodynamics ; Coalescence ; Systems ; Scale
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationTOTAL S.A. ; National Key Research and Development Program of China(2017YFB0602500) ; National Natural Science Foundation of China(91434121 ; Chinese Academy of Sciences(122111KYSB20150003) ; 91634203)
WOS IDWOS:000418484200040
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23453
Collection研究所(批量导入)
Corresponding AuthorYang, Ning
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.TOTAL Ind Div, Refining & Chem, Brussels, Belgium
4.TOTAL Sci Div, Data Proc & Modeling, Brussels, Belgium
Recommended Citation
GB/T 7714
Zhou, Rongtao,Chen, Jianhua,Yang, Ning,et al. Modeling of complex liquid-solid flow of particle swelling in slurry loop reactors[J]. CHEMICAL ENGINEERING SCIENCE,2018,176(00):476-490.
APA Zhou, Rongtao,Chen, Jianhua,Yang, Ning,Li, Jinghai,Fernandez, Alvaro,&Ricoux, Philippe.(2018).Modeling of complex liquid-solid flow of particle swelling in slurry loop reactors.CHEMICAL ENGINEERING SCIENCE,176(00),476-490.
MLA Zhou, Rongtao,et al."Modeling of complex liquid-solid flow of particle swelling in slurry loop reactors".CHEMICAL ENGINEERING SCIENCE 176.00(2018):476-490.
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