Abstract: The nonequilihrium-cell model described in part I is used to determine the binary mass-transfer coefficients of vapor and liquid phases on the bubble-cap and sieve trays. The coefficients determined by the model are compared with the AIChE correlations for the experiments of absorption of ammonia in air with water and of the distillation of methanol/water system under total reflux. For the one-phase rate controlling system-absorption of ammonia on bubble-cap trays, the model gives the same values of the gas phase mass-transfer coefficients as those from the AIChE correlation. However, for the two phase controlling system-distillation of methanol/water on sieve tray, the individual coefficients determined by the model are 20-70% higher than those from the AIChE correlations. The results show that the nonequilibrium-cell method can be successfully used to determime the mass-transfer coefficients on distillation trays, and it is more reasonable and convenient to use this method than to use the conventional efficiency method and chemical method.

摘要： 对文献报道的塔板操作数据用非平衡池法进行了分析处理.单相阻力控制系统(氨吸收)数据的处理结果与AIChE关联一致.对双相阻力控制系统(甲醇-水蒸馏)数据的处理表明,筛板汽相传质系数比AIChE关联的计算值高约20—70%.文中详细讨论了实验数据处理中各种问题的解决方法.结果表明,本文提出的传质系数确定方法比效率法和化学法更合理和方便.