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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Estudo da hidrodin?mica de um novo separador l?quido-l?quido: aplica??o ao sistema ?leo-bruto/?gua produzida / Study of the hydrodynamics of a new separator for liquid-liquid systems: application to the system crude oil/waste water

Moraes, Norberto Ara?jo de 15 December 2005 (has links)
Made available in DSpace on 2014-12-17T15:01:17Z (GMT). No. of bitstreams: 1 NorbertoAM.pdf: 1190502 bytes, checksum: 15fc3890db7720ac4fcdf9c75747130a (MD5) Previous issue date: 2005-12-15 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / This work aims to use a different hydrodynamic condition applied to a new design of mixer-settler on treating wastewater produced by petroleum industry, called MDIF (Misturador-Decantador ? Invers?o de Fases/ Mixer-Settler based on Phase Inversion MSPI). The use of this different hydrodynamic behaviour is possible due to vertical disposition of the device and the principle of Phase Inversion that controls the MDIF, providing the generation (creation) of a cascade of drops, into an organic layer, that works as micro-decanters, thus making possible the formation of a bed of non-coalesced drops, called Bed Formation . The use of this new hydrodynamics condition allows to increase the residence time of the oil carrier drops, into an organic layer, and the device can treat a greater volume of wastewater. In view of to get this condition it is necessary to operate at high throughput (58,6 m3.m-2.h-1). By results, the condition of Bed Formation is the best one to be used when MSPI operates with throughput up to 58,6 m3.m-2.h-1. The results using the condition of Bed Formation show that increasing the height of the bed of non-coalesced drops and/or decreasing the volumetric ratio (O/A) an increase of the separation efficiency is detected / Este trabalho objetiva utilizar uma diferente condi??o hidrodin?mica aplicada a um novo design de misturador-decantador aplicado ao tratamento de ?guas produzidas da ind?stria do petr?leo, que vem sendo denominado de MDIF (Misturador-Decantador ? Invers?o de Fases). A utiliza??o do regime hidrodin?mico de Leito Denso ? poss?vel devido a disposi??o vertical do aparelho e ao princ?pio de invers?o de fases que rege o MDIF, proporcionando a gera??o de uma cascata de gotas, na regi?o de leito org?nico, que funcionam como micro-decantadores, possibilitando assim a forma??o de um leito de gotas n?o-coalescidas, denominado de Leito Denso. A utiliza??o desta nova condi??o hidrodin?mica permite o aumento do tempo de resid?ncia da gota transportadora de ?leo, na regi?o de leito org?nico, e o trata um maior volume de ?gua produzida, visto que para se atingir esta condi??o ? necess?rio se operar a altas vaz?es (58,6 m3/m2h). A partir dos resultados obtidos, a condi??o de regime de leito denso mostra-se como a melhor condi??o a ser utilizada quando se opera o misturador-decantador ? invers?o de fases com vaz?es espec?ficas acima de 58,6 m3.m-2.h-1. Os resultados utilizando o regime de leito denso mostram que elevando-se a altura do leito de gotas n?o-coalescidas e/ou diminuindo a raz?o volum?trica org?nico/aquoso aumenta a efici?ncia de separa??o do aparelho

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