Numerical study of the effect of the inlet gas distributor on the bubble distribution in a bubbling fluidized bed

被引：9
|
作者：
Xing, Xuelian [1 ,2 ]
Zhang, Chao [3 ]
Jiang, Bin [2 ]
Sun, Yongli [2 ]
Zhang, Luhong [2 ]
Briens, Cedric [1 ]
机构：
[1] Western Univ, ICFAR, London, ON N6A 3K7, Canada
[2] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
[3] Western Univ, Dept Mech & Mat Engn, London, ON N6A 3K7, Canada
来源：
CHEMICAL ENGINEERING RESEARCH & DESIGN | 2022年 / 177卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Bubbling fluidized bed; Eulerian-Eulerian method; Inlet gas distributor; Gas distributor inclined angle; Gas bubble flux; Commercial operating conditions; LIQUID; IMPACT; PERFORMANCE; FLOWS; HYDRODYNAMICS; INJECTION; BEHAVIOR;
D O I：
10.1016/j.cherd.2021.10.021
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
GasbubbledistributionisconsideredoneofthemostcriticalfactorsaffectingtheIndustrialFluidCokingTMprocesssinceitinfluencestheformationofwetagglomeratesthatcausesfoulinginthestrippersection.Amulti-phaseEulerian-Euleriantwo-fluidmethod(TFM)coupledwiththekinetictheoryofthegranularflow(KTGF)wasusedtoinvestigatethehydrodynamicsofabubblingfluidizedbed;thegoalistoincreasetheflowofgasbubblesintothefirsthalfofthejetcavityformedwhenliquidissprayedintothefluidizedbed,thusreducingtheformationofwetagglomerates.Thenumericalsimulationsunderdifferentsuperficialgasvelocities,differentgasdistributorgeometries,anddifferentgasdistributorinclinedangleswerecarriedout.Theresultsshowedthatthepredictedbubbledistributionsattheinjectionlevelunderthelabandcommercialoperatingconditionsaresimilaralthoughtheparticlesandgasesaredifferentunderthosetwooperatingconditions.Moregasbubblescanbedirectedtothefirsthalfofthejetcavitybyeitherincreasingthegassuperficialvelocity(directingaround20%moregastothespecifiedarea)orusingtheproposednewgasdistributor(directingaround30%moregastothespecifiedarea).Theeffectoftheinletgasdistributorconfigurationonthebubbledistributionismuchmoresubstantialwhentheinclinedangleofthegasdistributorislarge. (c) 2021InstitutionofChemicalEngineers.PublishedbyElsevierB.V.Allrightsreserved.
引用
收藏
页码：70 / 82
页数：13
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