Effect of Zoning on Mixing and Mass Transfer in Dual Agitated Gassed Vessels
| Autor: | Michael Cooke, Amna Jamshed, Thomas L. Rodgers |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
General Chemical Engineering
Mixing (process engineering) 02 engineering and technology General Chemistry Mechanics Electrical Resistance Tomography 021001 nanoscience & nanotechnology Turbine Agitator Rushton turbine Volumetric flow rate Axial-radial dual system ResearchInstitutes_Networks_Beacons/dalton_nuclear_institute 020401 chemical engineering Electrical resistance and conductance Mixing Time Mass transfer Environmental science Dalton Nuclear Institute 0204 chemical engineering 0210 nano-technology Zoning Mass Transfer Gas-liquid mixing |
| Zdroj: | Jamshed, A, Cooke, M & Rodgers, T 2019, ' Effect of Zoning on Mixing and Mass Transfer in Dual Agitated Gassed Vessels ', Chemical Engineering Research & Design, vol. 142, pp. 237-244 . https://doi.org/10.1016/j.cherd.2018.12.011 |
| Popis: | Gas–liquid multi-phase processes are widely used for processes that require reactions. To increase productivity in these reactions one potential method is to increase the gas flow rate into the vessel. This means that it is important to understand how these reactors perform at high gas flow rates, which can create problems such as zones within the vessel. This paper investigates the mixing performance and the mass transfer in dual agitated systems at high gas flow rates. Two configurations have been compared a 6 blade disk turbine (Rushton turbine) below either a 6 Mixed flow Up-pumping or down-pumping agitator. Zoning has been identified by Electrical Resistance Tomography which affects the mixing time within the vessel, with increasing agitation rate potentially increasing the mixing times at high gas flow rates. At these high gas flow rates the zoning also affects the mass transfer meaning that it is not constant within the whole vessel. However, dividing the vessel into the key zones allows the mass transfer rate to be predicted with a single equation. |
| Databáze: | OpenAIRE |
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