气升式外环流反应器流体力学参数的轴径向分布  

Axial and radial profiles of hydrodynamic parameters of external-loop airlift reactor

作　　者：伍倩[1] 王学魁[1] 韩梅[1] 王铁峰[2] 沙作良[1] 王金福[2] 

机构地区：[1]天津科技大学,天津市海洋资源与化学重点实验室,天津300457 [2]清华大学化学工程系,北京100084

出　　处：《化工学报》2009年第6期1427-1434,共8页CIESC Journal

基　　金：国家自然科学基金项目(20676102);优秀博士论文作者专项基金项目(200757);国家重点基础研究发展计划项目(2007CB714302)~~

摘　　要：The axial and radial profiles of the gas holdup and bubble parameters in an external-loop airlift reactor of inner diameter 0.09 m and height 1.8 m were measured with the differential pressure method and dual-tip electrical conductivity probe at different superficial gas velocities.Air and water were used as the gas and liquid phases,respectively.The experimental data of the average and local gas holdups,bubble size and its distribution,bubble rising velocity,bubble frequency and gas-liquid interfacial area were obtained,and were analyzed based on the gas-liquid flow field and bubble-bubble interaction.The local gas holdup was correlated in terms of superficial gas velocity,axial height and radial position based on the experimental data.The axial and radial profiles of the gas holdup and bubble parameters in an external-loop airlift reactor of inner diameter 0.09 m and height 1.8 m were measured with the differential pressure method and dual-tip electrical conductivity probe at different superficial gas velocities. Air and water were used as the gas and liquid phases, respectively. The experimental data of the average and local gas holdups, bubble size and its distribution, bubble rising velocity, bubble frequency and gas-liquid interfacial area were obtained, and were analyzed based on the gas-liquid flow field and bubble-bubble interaction. The local gas holdup was correlated in terms of superficial gas velocity, axial height and radial position based on the experimental data.

关 键 词：气升式外环流反应器 气含率 气泡尺寸分布 轴径向分布 双探针电导探头 

分 类 号：TQ016[化学工程]