The influence of reactor scale, impeller tip speed and specific power on the overall homogeneity (multi-phasic mixing) of two dimensionally similar stirred tanks of 50 mm and 220 mm internal diameter (ID) are compared using data collected from electrical resistance tomography for 5 and 15% v/v 600–800 μm particle suspensions. The data collected is used to quantify the suspension quality of the system by defining mixing indices in the axial MI_z and radial MI_r directions as well as the overall mixing index MI_o. Analyses across the vessels indicated that axial and radial homogeneity improved with increasing impeller tip speed for both large and small vessels with more consistent suspensions observed in the former. Improved homogeneity was consistently found in the 10–20% (v/v) solids loading range (data only shown for 15%) than at 5%, across both reactors. In either vessel, optimum homogeneity was achieved at impeller tip speeds ca. 20% lower than the critical suspension speed, as shown previously. Analysis of the local concentration of particles in the lowest region of the vessels indicated that absolute homogeneity was unattainable as the decreasing local concentration displayed an asymptotic character with increasing power per unit volume. The suspension quality during reactor scale-up was relatively consistent with specific power ratios P/V, while the same degree of homogeneity was not achieved when the impeller tip speed was kept constant.

使用从电阻层析成像中收集的数据，比较了反应堆规模，叶轮叶尖速度和比功率对两个内径分别为50 mm和220 mm（ID）的尺寸相似的搅拌釜的整体均匀性（多相混合）的影响（5）和15％v / v 600-800μm的颗粒悬浮液。通过定义轴向MI _z和径向MI _r方向上的混合指数以及整体混合指数MI _o，收集的数据用于量化系统的悬架质量。。整个容器的分析表明，对于大型和小型容器，随着叶轮尖端速度的增加，轴向和径向的均匀性得到了改善，在前者中观察到的悬浮液更加一致。在两个反应器中，在10–20％（v / v）的固体装载量范围内（始终仅显示15％的数据）一致地发现改善了均质性（而不是5％）。在任一容器中，叶轮叶尖速度ca均达到最佳均匀性。如上所示，比临界悬挂速度低20％。对容器最低区域中的颗粒局部浓度的分析表明，由于降低的局部浓度显示出随单位体积功率增加的渐近特性，因此无法实现绝对均匀性。反应器按比例放大期间的悬浮液质量与特定功率比P / V相对一致，而当叶轮尖端速度保持恒定时，则无法达到相同程度的均匀性。