Experimental and theoretical investigation of fluid dynamics and separation behaviour of sandwich packings

拟议的更新项目的主要目标是使用基于速率的建模方法完成对具有三明治填料的柱的描述的综合模型。该项目的关键方面是实验确定特定状态的色散系数、液相停留时间和液侧传质系数，以及它们在模型中的实现。此外，还将讨论基于驱油现象描述的驱油点的正确确定，以及考虑可变流体性质的水动力参数预测相关性的升级。所需的实验数据将通过超快x射线断层扫描获得。为了全面评估夹层填料与传统填料的性能，将用最终模型分析化学吸收过程和蒸馏过程。

The main objective of the proposed renewal project is the finalization of the comprehensive model for the description of columns with sandwich packings using the rate-based modelling approach. Key aspects of the project are the experimental determination of regime-specific dispersion coefficients, liquid phase residence times and liquid-side mass transfer coefficients as well as their implementation in the model. Additionally, a correct determination of the flooding points based on a phenomenological description of the flooding as well as an upgrade of correlations for the prediction of hydrodynamic parameters to account for variable fluid properties will be addressed. The required experimental data will be obtained via ultrafast X-ray tomography. For an overall assessment of the performance of sandwich packings in comparison with conventional packing internals, both chemical absorption processes and distillation processes will be analysed with the finalized model.