This work presents the development of a reduced order compartment model for a counter-current spray dryer. The compartment model is formulated using adaptable compartments and introducing the use of correlations based on dimensionless groups. These correlations can capture the mean residence time they but are unable to reproduce the variance of the entire residence time distribution (RTD). Limitations are also observed in the evaluation of internal fluxes. The application of these correlations to a specific zone requires the inclusion the geometrical modifications in any part of the unit. A small internal modification in one geometry not only modifies a zone, but also influences the remaining regions so that the zones cannot be independently scaled-up. The methodology is complemented with an analysis of the RTD showing that most of the dispersion generated takes place in the bottom cone.

这项工作介绍了逆流喷雾干燥器的降阶隔室模型的开发。隔间模型是使用自适应隔间制定的，并引入了基于无量纲组的相关性的使用。这些相关性可以捕获它们的平均停留时间，但无法再现整个停留时间分布 (RTD) 的方差。在评估内部通量时也观察到了局限性。将这些相关性应用于特定区域需要在单元的任何部分中包含几何修改。一个几何结构中的小内部修改不仅会修改一个区域，还会影响其余区域，因此这些区域不能独立放大。