Influence of liquid viscosity and surface tension on the gas-liquid mass transfer coefficient for solid foam packings in co-current two-phase flow

C.P.Stemmet; F.Bartelds; J.van der Schaaf

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Influence of liquid viscosity and surface tension on the gas-liquid mass transfer coefficient for solid foam packings in co-current two-phase flow

机译：液体粘度和表面张力的影响气液传质系数顺流两相流中固体泡沫包装

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The gas-liquid mass transfer coefficient and other hydrodynamic parameters such as liquid holdup and frictional pressure drop are presented for gas and liquid moving in co-current upflow and downfiow through solid foam packings of 10 and of 40 pores per linear inch(ppi).The effect of increasing the liquid viscosity on the mass transfer coefficient in co-current upflow is quantified and correlated to the frictional pressure drop,a measure of the frictional energy dissipation:k_La_(GL)epsilon_L(Sc_L/Sc_(water))~(0.69)=2.05 X 10~(-4)P_f~(0.8)(m_L~3 m_p~(-3)s~(-1)).The gas-liquid mass transfer coefficient in co-current downfiow is correlated to the liquid velocity and the Schmidt number using the correlation proposed by Sherwood and Holloway[Sherwood,T.and Holloway,E,1940,Performance of packed towers-liquid film data for several packings,Transactions of the American Institute of Chemical Engineers 36:39-70]:k_L a_(GL)epsilon_L D_L~(-1)=3.7(u_(L rho L mu_L)~(-1))~(1.16)(Sc_L)~(0.5)(m_L m_p~(-3)).The results for the gas-liquid mass transfer coefficient in co-current upflow were correlated with a similar equation,where the influence of the gas velocity is included,similar to the correlations for packed beds of spherical particles proposed in Fukushima and Kusaka[Fukushima,S.and Kusaka,K.,1979,Gas-liquid mass transfer and hydrodynamic flow region in packed columns with cocurrent upward flow,Journal of Chemical Engineering of Japan 12(4):296-301]:k_L a_(GL)epsilon_L D_L~(-1)=311u_G~(0.44)(u_(L rho L mu_L~(-1))~(0.92)(Sc_L)~(0.5)(m_L m_p~(-3)).In this study the liquid Schmidt number dependency of the gas-liquid mass transfer coefficient points to the penetration theory describing the rate of mass transfer for gas-liquid flow through solid foam packings.

机译：气液传质系数等如持液量和水动力参数摩擦压降了加油和液体在顺流向上流和移动通过固体泡沫包装10和downfiow每线性英寸40毛孔(ppi)。质量上的液体粘度增加传递系数在顺流向上流量化及相关摩擦压降,衡量摩擦能量

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《Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers》 |2008年第10期|1094-1106|共13页
作者
C.P.Stemmet; F.Bartelds; J.van der Schaaf;
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Laboratory of Chemical Reactor Engineering,Department of Chemical Engineering and Chemistry,Eindhouen University of Technology,P.O.Box 513,5600 MB Eindhouen,The Netherlands;

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正文语种英语
中图分类国际共产主义运动;
关键词
Mass transfer coefficient; Schmidt number; upflowViscosity of liquidsAMERICAN INSTITUTE OF CHEMICAL ENGINEERSsolid foamliquidsMASS TRANSFER;

机译：传质系数,施密特数量;upflowViscosity liquidsAMERICAN化学ENGINEERSsolid研究所foamliquidsMASS转移;

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Influence of liquid viscosity and surface tension on the gas-liquid mass transfer coefficient for solid foam packings in co-current two-phase flow

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