气升式外环流反应器的传质特性  

MASS TRANSFER CHARACTERISTICS IN AN EXTERNAL AIRLIFT LOOP REACTOR

作　　者：刘永民[1] 张红[1] 张永利[1] 

机构地区：[1]辽宁石油化工大学石油化工系,辽宁抚顺113001

出　　处：《石油学报（石油加工）》2003年第6期70-74,共5页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：辽宁省自然科学基金资助项目 (972 0 5 0 )

摘　　要：以Higbie的渗透理论和Kolmogoroff的湍流理论为基础 ,提出了计算液体表面微元在气 液相界面暴露时间的方法 ,并建立了预测液相体积传质系数的模型方程。对于水 空气体系 ,测定了上升管内气泡分布以及不同管径比的外环流反应器中 ,液相体积传质系数、循环液速和气含率随表观气速的变化规律 ,并对液相体积传质系数的预测值和实验值进行了比较。Based on Higbie's penetration theory and Kolmogoroff's theory of homogenous and isotropic turbulence, the method for calculating the exposure time of liquid particle at the gas-liquid interphase was proposed, and the model for predicting the liquid volumetric mass transfer coefficient was set up. The distribution of bubble size was measured in the air-water system and the change regularity of liquid volumetric mass transfer coefficient, the gas holdup and the liquid circulation velocity were measured in the external loop reactor with different diameter ratios in the air-water system. The calculated values of liquid volumetric mass transfer coefficient were compared to the experimental data.

关 键 词：气升式外环流反应器 传质特性 渗透理论 湍流理论 

分 类 号：TQ052.5[化学工程]