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https://open.uns.ac.rs/handle/123456789/2391
Назив: | Hydrodynamics of an external-loop airlift reactor with inserted membrane | Аутори: | Kojić, Predrag Popović, Svetlana Tokić, Milenko Šijački, Ivana Lukić, Nataša Jovičević, Dragica Petrović, Dragan |
Датум издавања: | 1-апр-2017 | Часопис: | Brazilian Journal of Chemical Engineering | Сажетак: | © 2018 Assoc. Brasiliera de Eng. Quimica / Braz. Soc. Chem. Eng..All Rights Reserved. The objective of this study was to investigate the hydrodynamics of an external-loop airlift membrane reactor (ELAMR). The ELAMR was operated in two modes: without (mode A) and with bubbles in the downcomer (mode B), depending on the liquid level in the gas separator. The influence of the gas distributor's geometry and various alcohol solutions on the hydrodynamics of the ELAMR was studied. Results for the gas holdup and the downcomer liquid velocity are commented with respect to an external-loop airlift reactor of the same geometry but without the membrane in the downcomer (ELAR). Due to the presence of the membrane in the downcomer, acting as the local hydrodynamic resistance, the gas holdup in the riser of the ELAMR increases maximally by 16%, while the liquid velocity in the downcomer decreases up to 50%. The values of the gas holdup and liquid velocity predicted by the application of empirical power law correlations and a feed forward back propagation neural network (ANN) are in very good agreement with experimental values. | URI: | https://open.uns.ac.rs/handle/123456789/2391 | ISSN: | 01046632 | DOI: | 10.1590/0104-6632.20170342s20150399 |
Налази се у колекцијама: | TF Publikacije/Publications |
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