化学法测定转鼓反应器气液相界面积

摘要

The gas-liquid interfacial area in a rotating drum reactor was measured by chemical method. The effects of high-gravity factor of drum surface, gas flux and liquid flux on the interfacial area in the rotating drum reactor were investigated. The results show that the interfacial area increases with the increase of high-gravity factor and liquid flux initially, and then tends to be smooth. The gas-liquid interfacial area in the rotating drum reactor exists the maximum value with the increase of the gas flux. The maximum gas-liquid interfacial area is 0.058 m when the high-gravity factor of the drum surface is 77 , the liquid flux is 5 m3/( m2·h) and the gas flux is 398 m3/( m2·h) respectively. The corresponding specific interfacial area is 137 mVm3, which is 6, 8 times larger than that of the bubbling reactor. The results provide basis for the optimization design of the rotating drum reactor and the selection of suitable operating parameters.%采用化学法对转鼓反应器内气液相界面积进行测定,考察了转鼓表面超重力因子、气体通量、液体通量对转鼓反应器内气液相界面积的影响.结果表明:反应器气液相界面积分别随超重力因子和液体通量的增大,先增大后趋于平缓；随着气体通量的增加,转鼓反应器内气液相界面积先增大然后减小;在液体通量为5 m3/(m2·h)、转鼓表面超重力因子为77、气体通量为398m3/(m2·h)时,可获得最大的气液相界面积为0.058 m2,比相界面积为137 m2/m3,约为鼓泡反应器比相界面积的6.8倍.研究结果为转鼓反应器的优化设计和操作条件的选择提供了依据.