WattsApp in Multiphase Systems by Gravity-Driven Buoyancy and Settling |
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Authors: | Manfred Weber |
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Affiliation: | INEOS Phenol GmbH, Dechenstraße 3, 45966 Gladbeck, Germany |
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Abstract: | Power and energy balances are described for simplified gravity-driven multiphase flows. It is emphasized that the power (→ Watts) or energy input by gravity impulse must be found back as the sum of all power or energy consumptions from the flow processes (→ Application). Examples are given for bubble columns and for batch liquid-liquid separation processes, based on simplified assumptions regarding the flow behavior. For large-scale apparatus, the flow characteristic of the involved phases is more complex and needs to be modeled more precisely. That is still a key challenge for scaling-up multiphase systems. Computational fluid dynamics is an adequate instrument but needs to be further developed and enhanced for multiphase flows in large-scale processes. And of course, any rigorous model must then be verifiable by a power balance. |
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Keywords: | Bubble column Energy balance Gravity-driven Liquid-liquid extraction Multiphase flow Power balance |
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