3D printed structured packings - analysis of the influence of morphological changes and anisotropical structures induced by the printing process on wetting behavior and mass transfer

3D 打印规整填料 - 分析打印过程引起的形态变化和各向异性结构对润湿行为和传质的影响

• 批准号: 533252297
• 负责人: Professor Dr.-Ing. Thomas Grützner
• 金额: --
• 依托单位: Fachgebiet Dynamik und Betrieb technischer Anlagen
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/533252297?language=en
• 关键词: 3D; printed; structured; packings; analysis

A large part of the energy consumption in the process industry is consumed in thermal separation units, especially distillation or desorption columns. Structured packings offer good separation efficiency as well as a low pressure drop. However, distillation offers huge potential for saved resources by improving structured packings. Conventional manufacturing of structured packings made from metal sheets by bending and punching limits the degree of freedom regarding the development of more efficient designs. However, current developments in the field of additive manufacturing can partially overcome these obstacles in the manufacturing process of established manufacturing methods. Above all, this includes new degrees of freedom in the design of packings. An open question here is the extent to which parameters, such as the alignment of the packing to the axis of the printer, influence the texture and thus also the properties when the packing is used. This project addresses the fundamental question of how orientation in the printing chamber during 3D printing of structured packings affects separation performance. Preliminary studies have shown that both the fluid distribution and the HETP value change when the orientation is varied during the printing process. In this project, two approaches will be taken to generate an understanding of the observed phenomena: First, systematic experimental studies of surface properties, contact angle, fluid distribution, and separation performance will be conducted to shed light on individual phenomena. The influence of a distribution of contact angles, stemming from the anisotropic surface structure generated during the printing process will also be investigated. On the other hand, numerical flow simulations will be performed to characterize the influence of the surface structure on the flow regime and to generate an understanding of how a possible manipulation of the surface could be used to improve the separation performance in the future.

加工工业中的大部分能源消耗是在热分离装置中消耗的，特别是蒸馏或解吸塔。规整填料提供良好的分离效率以及低压降。然而，蒸馏提供了巨大的潜力，节省资源，通过改进规整填料。通过弯曲和冲压由金属板制成的规整填料的常规制造限制了关于开发更有效设计的自由度。然而，目前增材制造领域的发展可以部分克服已建立的制造方法的制造过程中的这些障碍。最重要的是，这包括在包装设计中的新的自由度。这里一个悬而未决的问题是，当使用填料时，诸如填料与印刷机轴线的对准等参数在多大程度上影响纹理，从而也影响性能。该项目解决了规整填料3D打印过程中打印室中的方向如何影响分离性能的基本问题。初步研究表明，在打印过程中，当方向变化时，流体分布和HETP值都会发生变化。在这个项目中，将采取两种方法来产生观察到的现象的理解：首先，系统的表面特性，接触角，流体分布和分离性能的实验研究将进行阐明个别现象。还将研究印刷过程中产生的各向异性表面结构引起的接触角分布的影响。另一方面，将进行数值流模拟，以表征表面结构对流态的影响，并了解如何在未来使用可能的表面操作来提高分离性能。