Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf
2 PublicationsEvaluation of liquid hold-up in a rotating packed bed for high gravity fluid separation using process-synchronized gamma-ray computed tomography
Groß, K.; Bieberle, A.; Gladyszewski, K.; Schubert, M.; Skiborowski, M.; Hampel, U.; Górak, A.; (Editors)
Abstract
A Rotating Packed Bed (RPB) is a compact and flexible fluid separation equipment, which utilizes a centrifugal forces to achieve enhanced mass and energy transfer between a liquid and a vapour phase, brought in contact within a porous rotating packing. In order to perform a reliable design and scale-up of RPBs, detailed knowledge about the hydrodynamics and flow mechanisms within the equipment is strongly required. However, due to the non-transparent solid casing, such insight cannot be generated by common analytics. In the present study, liquid hold-up and gas-liquid phase distribution are determined in a porous metal foam packing of 450 mm diameter installed in a pilot-scale RPB using a high-energetic gamma-ray computed tomography (CT). The CT system consists of an isotopic source Cs 137 and an in-house developed radiation detector comprising 320 scintillation detector elements operated in photon counting mode in order to detect each single gamma photon. In particular, the liquid hold-up distribution and the lateral spreading behaviour is visualized and analysed relative to the motion of the rotating packing applying conventional CT scanning and a time-averaged angular-resolved CT scanning procedure, respectively.
Keywords: Fluid Separation; High Gravity Equipment; Rotating Packed Beds; Gamma-Ray Computed Tomography; Process-Synchronized Imaging
Involved research facilities
- TOPFLOW Facility
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Contribution to proceedings
World Congress on Industrial Process Tomography, 02.-06.09.2018, Bath, UK -
Lecture (Conference)
World Congress on Industrial Process Tomography, 02.-06.09.2018, Bath, UK
Permalink: https://www.hzdr.de/publications/Publ-27562