摘要
带分段导流筒的气升式环流反应器是具有独特的两相流动和传质特性的一种多相反应器。本文用水－空气和亚硫酸钠（１０％）－空气体系研究了分段导流筒环流反应器的气含率ε、氧消耗速率ｒｏ２、传质比表面积α、以及体积传质系数ｋ＿Ｌα随表现气速变化规律，并与一段导流筒的环流反应器进行了比较。实验采用的表现气速下（０～６ｃｍ／ｓ），导流筒分段的环流反应器的ε、ｒｏ２、α和ｋ＿Ｌα有显著提高，平均比一段环流反应器高出１０％以上。由于使用了特殊的膜气体分布器，本文还获得了很高的ε、ｒｏ２、α和ｋ＿Ｌα值，并在中等操作气速下（３ｃｍ／ｓ左右）出现最大值。
The airlift loop reactor(ALR)with split draft tube iS a kind of multiphase reactor which has special gas-liquid flow pattern and mass transfer characteristics. For water-air system and sodium sulfite aqueous soultion(10%)-air system, the gas hold-up、oxygen consumption rate、specific gas-liquid interfacial area and volumetric mass transfer coefficient of ALR with split draft tube were measured at different superficial gas velocities, and were compared with those of ALR with single draft tube.At experimental superficial gas velocities (0～6cm/s),the parameters indicated above in-creased about 10%comparing with those of ALR with single draft tube. Since a special mem-brane gas distributor was used,great values of the parameters indicated above were obtained,and maximum values could be found at medium operating gas velocity (about 3 cm/s)
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
1994年第4期357-363,共7页
Chemical Reaction Engineering and Technology
关键词
气升式
环流反应器
导流筒
膜气体分布器
Airlift loop reactor,Split draft tube,Membrane gas distributor
