A5002466812- Process Optimization and Integration
- Advanced Control Systems Optimization
- Carbon Dioxide Capture Technologies
- Heat and Mass Transfer in Porous Media
- Granular flow and fluidized beds
- Innovative Microfluidic and Catalytic Techniques Innovation
- Extraction and Separation Processes
- Field-Flow Fractionation Techniques
- Membrane Separation and Gas Transport
- Microfluidic and Capillary Electrophoresis Applications
- Fluid Dynamics and Mixing
- Rheology and Fluid Dynamics Studies
- 3D Printing in Biomedical Research
TU Dortmund University
2020-2024
Multi-rotor RPBs (MR-RPBs) are a promising way to intensify mass transfer by exploiting the centrifugal field while achieving high separation performance. Reaching full potential of performance MR-RPBs requires uniform liquid distribution in each rotor. As conventional distributors like nozzles can only be used at pressurized inlet liquid, new concept is needed for on additional rotors. For this r eason, novel named rotating baffle distributor (RBD) was developed. It has compact design and...
Although it is known that a loss in separation performance caused by liquid maldistribution, there only marginal knowledge of distribution rotating packed beds (RPBs). As result, the exact influence on RPBs not fully understood. Therefore, this study focuses different distributors hold-up metal foam packing inside RPBs. Liquid hold-ups were measured noninvasively using γ-ray computed tomography (CT), and water/air was system under investigation, operated at atmospheric pressure, temperature...
Different configurations of a rotating packed bed (RPB) were used in distillation study to comprehend the impact number rotors on separation performance ethanol/1-propanol at total reflux and atmospheric pressure. The single-rotor RPB (1R-RPB) was compared with that two-rotor (2R-RPB). To achieve uniform liquid distribution lower rotor 2R-RPB, collector baffle distributor (RBD) installed. rotational speed (nrot) varied between 300 1200 rpm, two different F-factors investigated (FG = 1.3...
The transfer of batch processes to continuous flow is a major driver for the application microreactors. Here, we present methodology (bio)chemical reactions in mode two-phase flow. For our purposes, coiled inverter (CFI) promising reactor design providing enhanced heat and mass transfer, narrow residence time distribution, rapid mixing. First, this used current development droplet-based reaction screening system, which was first tested with Paal–Knorr pyrrole synthesis as model reaction....
The impact of different sealing types and their wearing on the separation performance in distillation processes rotating packed beds (RPB) has been investigated, which potentially causes bypass flows inside unit. In literature, a maximum is observed, can have several possible explanations. Next to theory that with increasing rotational speed lower residence time counteracts mass transfer intensification, one there are undetected bypasses from casing unit eye rotor. Besides effect maximum,...
Rotating packed beds (RPBs) are increasingly used in academia and industry for separation processes, but a lack of knowledge about fluid dynamics liquid maldistribution still limits our understanding the mass transfer inside. Recently, structured Zickzack packings (ZZ packings) were designed that promise to provide homogeneous distribution throughout packing volume. In this study, water–air system ZZ characterized at atmospheric pressure 20 °C. For decreasing rotational speeds, strongly...
There is a considerable demand to understand the mass transfer fundamentals in rotating packed beds (RPB), especially for vapor-side controlled processes. An online measurement method allowing determination of radial temperature profiles was developed calculate separation efficiency packing and casing via known VLE data. Furthermore, profile established nonuniformities performance different parts that will eventually help optimize design. Binary distillation experiments were carried out with...
Because of the centrifugal field in rotating packed beds (RPB), a process intensification gas–liquid mass transfer takes place. While two-rotor RPBs offer great potential to increase separation performance, compared one-rotor RPBs, there is lack fundamental understanding hydrodynamics and RPBs. To bridge that gap, systematic experimental approaches are needed derive correlations for hydrodynamic behavior. The current article presents detailed analysis dry pressure drop (Δptotal) by...