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|Type:||Artigo de periódico|
|Title:||Selection Of Optimized Vessel Geometries For Coiled Stirred Tank Reactors|
|Abstract:||Stirred Tank Reactors are extensively used in chemical industries. It is common to use either jackets or internal coils when the reaction inside these reactors is highly exothermic. Both arrangements have positive influence and drawbacks in controling the bulk temperature. The design of coiled vessels today follows very much the geometry by Oldshue and Gretton  which has been criticized since it affects the flow. Street and McGreavy [6, 5] and Nunhez and McGreavy [3, 7, 2] indicated that if coils are placed in the same height of the impeller blades, internal flow circulation is restricted, even though there is an excellente local heat transfer in the impeller region. This work aims to show by simulating the momentum, mass and energy equations inside the reactor, that there is great gain in performance if small alterations in the internals location are made. The idea is to simulate the flow for both the experimental apparatus cited above and some proposed geometries to indicate how internal flow can be improved. Preliminary simulations have already shown that there is great gain by avoiding to place any coil at the impeller height.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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