Abstract: In this study, a dynamic method was developed to determine the local mass transfer coefficients of the air-lift loop reactor. In investigating local mass transfer coefficients, we found that the circulation ratio of gas phase was an important parameter affecting the mass transfer behaviours in the downcomer. The larger the ratio, the larger would be the effective mass transfer coefficient. Based on momentum balance, the following equation was derived: where ub∞ was determined as 0.16m/s for air-water system.

摘要： 本文在环流反应器中液相单级返混较小的情况下,提出了测量上、下两流区局部容积传质系数的稳态和动态物理吸收法,对两法的误差来源和适用条件进行了分析讨论,并用该两法对环流反应器的局部传质特性进行研究,发现气相循环比是环流反应器传质特性的一个重要参数.文中应用动量衡算导出了气相循环比的理论关联式.