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A methodology for the analysis of distillation processes within rotating packed beds based on local temperature measurements
Ist Teil von
Chemical engineering research & design, 2023-05, Vol.193, p.198-206
Ort / Verlag
Elsevier Ltd
Erscheinungsjahr
2023
Link zum Volltext
Quelle
ScienceDirect Journals (5 years ago - present)
Beschreibungen/Notizen
A temperature-based measurement methodology for the investigation of the local separation efficiency within the packing of Rotating Packed Beds (RPB) has been developed, which enables the derivation of design criteria and optimal operating conditions. Key therein is the acquisition of experimental data providing a local resolution of the temperature profile within the packing. For this purpose, independent data loggers were adapted and installed to capture radial temperature profiles for the distillation of the binary mixture ethanol and 1-propanol. Based on the positions of the sensors, local separation efficiencies and mass transfer coefficients were determined experimentally. Effects on the analysis due to maldistribution were analysed by deploying variations in packing arrangement. By dividing the packing into different sections and averaging the performance indices, the impact of maldistributions is then compensated. This yields in consistent and reproducible results, showing a decrease in mass transfer rates with increasing radial position and a general enhancement of mass transfer by rotational speed. To our knowledge, this is the first experimental study providing radial temperature profiles for RPBs for varying rotational speeds and a methodology for its analysis.
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•Experimental study providing radial temperature profiles for Rotating Packed Beds.•Developed experimental setup reproduces consistent temperature measurements.•Methodology compensates for maldistribution and sensor wetting conditions.•Local mass transfer performance decreases with increasing radius.•Expanded data basis could be used to predict and extrapolate separation performance.