| Affiliation: | 1. Hamburg University of Technology, Institute of Multiphase Flows, Eissendorfer Strasse 38, 21073 Hamburg, Germany;2. Hamburg University of Technology, Institute of Laser and System Technologies, Denickestrasse 17, 21073 Hamburg, Germany;3. Hamburg University of Technology, Institute of Laser and System Technologies, Denickestrasse 17, 21073 Hamburg, Germany Fraunhofer Research Institution for Additive Manufacturing Technologies IAPT, Am Schleusengraben 14, 21029 Hamburg, Germany |
| Abstract: | In chemical process engineering, fast gas-liquid reactions often suffer from an inefficient distribution of gas and therefore mixing and mass transfer performance. This study deals with the possibility of influencing the local gas holdup and bubble size distribution in a gas-liquid process using additively manufactured lattice structures (AMLS). The used measuring technique to study bubble size, velocity, and the local gas holdup is a photo-optical needle probe. By using AMLS, a significant radial homogenization of the local gas holdup and the mean bubble size is achieved. Furthermore, it can be demonstrated that the bubble size can be tailored by the geometry of the inserted structure. It is illustrated that the mean bubble velocities are lowered within the lattice resulting in a higher residence time of the dispersed phase with an impact on the mass transfer performance within the AMLS. |
