泰勒反应器中流体的停留时间分布研究

摘要

Tracer pulse-input method was used to investigate the effects of structure and operation parameters and fluid viscosity of Taylor reactor on the fluid residence time distribution . It has been found that the flow mixing was enhanced with an increase in Taylor number (Ta) and a decrease in axial Reynolds number (Reax). Based on the tanks-in-series model, an expression was presented to describe the relationship among number of equivalent CSTRs, rector structure parameters, Taylor number and axial Reynold number. The results show that the N value calculated under the investigated conditions (Ta=280-3 230, Reax=0.89-6.78) agrees with experimental data very well and the equation can be applied widely.%采用脉冲示踪法,实验考察了泰勒反应器结构参数、操作参数和物料粘度对其停留时间分布的影响规律,发现泰勒反应器中物料的混合程度随泰勒数(Ta)的增大而增大、轴向雷诺数(Reax)的增大而减弱.进一步采用多级混合模型,将泰勒反应器的当量全混釜数(N)与反应器结构参数、泰勒数和轴向雷诺数相关联,提出了一个N的测算公式.在实验考察的范围(Ta=280～3 230; Reax=0.89～6.78)内,由该式计算的N值与实验值很好地相符,具有广泛的适用性.