摘要
为改善鼓泡塔的传质性能,气体和液体以喷射形式进料,这是喷射式气-液反应器的显著特征。本文对这种反应器的传质特性进行了实验测定和计算,着重考察了喷射对全塔传质效果的影响。研究结果表明,反应器内明显地存在着两个不同的区域,即喷射区和主体区。而且,喷射区的传质作用十分强烈,其传质系数K_Lα比一般鼓泡塔或搅拌釜高出1～2个数量级。
A steady-state method was applied for K_(Lα)measurement based on dissolved oxygen concentra- tion profiles in a gas-liquid jet reactor.The K_(Lα)data showed that there exist two different mass transfer regions in the reactor,i.e.the jet region and the bulk region,and values of K_(Lα)in the jet region are greater than those in bubble columns by a magnitude of order up to 2.These high values are attributed to the enhanced mass transfer due to turbulence induced by the liquid and gas jets.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
1990年第3期19-25,共7页
Chemical Reaction Engineering and Technology
