高校化学工程学报2011，Vol.25Issue(2)：187-192,6.
气升-射流式多段环流反应器的流体力学和传质特性
Jet Associated Multi-Stage Air-Lift Loop Reactor: Hydrodynamics and Mass Transfer
摘要
Abstract
Air-lift loop reactor (ALR) is widely used for the gas-liquid/gas-liquid-solid multi-phase reaction or separation. In order to improve the gas distribution and to enhance the mass transfer in ALR and based on the conventional multi-stage air-lift loop reactor (MALR), the jet associated multi-stage air-lift loop reactor (MJALR) was developed by introducing a jet into the second stage of the MALR in present study. The hydrodynamics and mass transfer characteristics of the proposed MJALR were studied by using a MJALR of 160 L with water/air as working system. The experimental results show that introduction of the jet associated air-lift loop leads to the decrease of the raising bubble size, the increase of the total gas hold-up, the promotion of gas-liquid distribution in downcomer and the acceleration of loop flow. It was found that all these effects depend on the jet volume, jet incidence angle, inlet gas volume and gas allocation. Under the conditions as follows, the jet incidence angle is not larger than 45 ° and the gas allocation to the jet is not more than 40％ of the total gas volume, the hydrodynamics and mass transfer characteristics of the MALR can be highly improved by introducing the jet into it and by increasing the total gas volume within the range of the economic energy consumption.关键词
气升式环流反应器/射流/流体力学/传质速率/气液反应Key words
air-lift loop reactor/ jet/ hydrodynamics/ mass transfer/ gas-liquid reaction分类
化学化工引用本文复制引用
王于杰,蒋国强,丁富新..气升-射流式多段环流反应器的流体力学和传质特性[J].高校化学工程学报,2011,25(2):187-192,6.基金项目
国家科技支撑计划(2007BAI26B02). （2007BAI26B02）
