Hydrodynamics of air-kerosene bubble column under elevated pressure in homogeneous flow regime  

作　　者：Bay Van Tran Son Ich Ngo Young-Il Lim Keon Bae Dong Hyun Lee Kang-Seok Go Nam-Sun Nho 

机构地区：[1]Center of Sustainable Process Engineering(CoSPE),Department of Chemical Engineering,Hankyong National University,Gyeonggi-do,Anseong-si,Jungang-ro 327,17579,Republic,of Korea [2]School of Chemical Engineering,Sungkyunkwan University,2066 Seobu-ro,Jangan,Suwon 16419,Republic of Korea [3]Center for Convergent Chemical Process(CCP),141 Gajeong-ro,Yuseong-gu,Daejeon 34114,Republic of Korea

出　　处：《Chinese Journal of Chemical Engineering》2021年第5期190-202,共13页中国化学工程学报（英文版）

基　　金：the financial support from the R&D Convergence Program of the Ministry of Science, ICT and Future Planning (MSIP);the National Research Council of Science & Technology (NST) of the Republic of Korea (CRC-14-1KRICT);supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Ministry of Science and ICT (2020R1F1A1066097)

摘　　要：A multiphase computational fluid dynamics(CFD)model coupled with the population balance equation(PBE)was developed in a homogeneous air-kerosene bubble column under elevated pressure(P).The specific pressure drop(ΔP/L),gas holdup(α_(G)),and Sauter mean diameter(d_(32))were experimentally measured in the bubble column with 1.8 m height and 0.1 m inner diameter,which was operated at a superficial gas velocity of 12.3 mm·s^(-1),and P=1-35 bar(1 bar=10^(5) Pa).A modified drag coefficient model was proposed to consider the effect of bubble swarm and pressure on hydrodynamics of the bubble column.The Luo breakage model was modified to account for liquid density,viscosity,surface tension and gas density.TheΔP/L,α_(G),and d_(32) obtained from the CFD model were compared with experimental data,and the gas density-dependent parameters of the CFD model were identified.With increasing P from 1 to 35 bar,theα_(G) varied from 5.4%to 7.2% and the d32 decreased from 2.3 to 1.5 mm.The CFD-PBE model is applicable to predict hydrodynamics of pressurized bubble columns for gas-organic liquid in the homogeneous regime.

关 键 词：BUBBLE column Air-kerosene High pressure HOMOGENOUS regime Computational fluid dynamics (CFD) Population balance equation (PBE) 

分 类 号：TQ021.1[化学工程]