Development of miniature measuring cells for the characterization and efficient design of structured packing columns based on an elementary cell model.

本研究项目的总体目标是在小型化实验装置和适当建模的基础上表示工业填料柱的传质动力学。小型化的实验装置是为了构成最小可行的分离单元，允许在考虑实际边界条件下对工业柱的传质效率得出结论。在这种方式下，实验室柱应使用不再作为工业柱设计的实验室基础，工业柱主要是工业设备的一个极其简化的表示。因此，这里提出的方法代表了工业和科学共同实践的根本范式变化，需要深入研究。填料柱的动力学可分为流体力学和传质特性两个方面。这个项目是第一步，其中填料的流体动力学行为是根据总体方法概念来表征的。在随后的研究项目中——基于流体动力学结果——必须进行传质行为的扩展。随着上述小型化实验装置的发展，将在热分离工程中创建一个新的技术平台，它允许对不同参数（质量传递阻力、接触角、表面结构等）进行确定的调整、观察和确定，因此从角度来看，它甚至超出了放大问题的范围，具有极大的兴趣。

The overall goal of this research project is to represent the mass transfer dynamics of an industrial packed column on the basis of miniaturised experimental set-ups and an appropriate modelling. The miniaturised experimental set-up is to constitute the smallest feasible separation unit that allows conclusions on the mass transfer efficiency of industrial columns with consideration of the real boundary conditions. In this manner no longer a laboratory column shall be used as a laboratory basis for the design of industrial columns which principally is an extremely reduced representation of an industrial apparatus. The approach proposed here therefore represents a fundamental paradigmatic change in the industrial and scientific common practice and needs to be profoundly investigated. The dynamics of a packed column can be subdivided into fluid mechanic aspects and mass transfer characteristics. This project is a first step where the fluid dynamic behaviour of the packing is to be characterised according to the overall methodologic concept. Later in a subsequent investigation project - based on the fluid dynamic results - consequently an extension by the mass transfer behavior has to take place. With the development of the afore-described miniaturized experimental set-up a new technology platform would be created within thermal separation engineering, which allows the decided adjustment, observation and determination of different parameters (mass transport resistances, contact angles, surface structures, etc.) and therefore perspectively is of utmost interest even beyond the mere scope of scale-up problems.