筛板结构对多级鼓泡塔中流体力学参数的影响  

Effect of sieve plates structure on hydrodynamic parameters in multistage bubble column reactor

作　　者：秦岭[1,2] 靳海波[2] 杨索和[2] 

机构地区：[1]北京化工大学化学工程学院,北京100029 [2]北京石油化工学院化学工程学院,北京102617

出　　处：《化学工程》2010年第9期15-18,共4页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(20776018);北京市自然科学基金资助项目(2093034);北京市属高等学校人才强教深度计划资助项目(PHR200906139)

摘　　要：在外径0.3 m的多级鼓泡塔中采用双探针电导探头考察了筛板结构对鼓泡塔中筛板上下两处流体力学参数的影响,并与无筛板鼓泡塔中流体力学参数进行了对比。研究结果表明:带筛板的鼓泡塔中气含率径向分布规律和无筛板的鼓泡塔相类似,筛板上下二侧的平均气含率随表观气速的增加而增加;在鼓泡塔轴向位置上,筛板下侧的气含率普遍比筛板上侧气含率要高;筛板的孔分布方式对于气含率径向分布有着一定影响,但孔径大小对此影响较小。In the multistage bubble column reactor with outside diameter of 0.3 m,the effect of sieve plates structure on the hydrodynamic parameters was studied with a double-sensor conductivity probe,and the parameters were compared with those in regular bubble column without sieve plates.The experimental results show that the radial distribution of gas holdup in multistage bubble column reactor is similar to the one in regular bubble column.The average gas holdup above and under the plate increases with the increasing of superficial gas velocity.In axial direction,the gas holdup under the plate is higher than the one above.The distribution of the holes on sieve plates influences slightly the dispersion of local gas holdup.But the diameter of the holes in plate can hardly influences the distribution of local gas holdup.

关 键 词：多级鼓泡塔 筛板 气含率 双头电导探针 

分 类 号：TQ053.5[化学工程]