Hydrocyclones
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. A NEW COMPUTATIONAL FLUID DYNAMICS STUDY OF A LIQUID-LIQUID HYDROCYCLONE IN THE TWO PHASE CASE FOR SEPARATION OF OIL DROPLETS AND WATER
Abstract A liquid-liquid hydrocyclone, so-called de-oiling equipment, was investigated for separation of oil droplets and wastewater in an Iranian petroleum unit. To generate the geometry and the mesh of the hydrocyclone Gambit software was used. Afterwards, by taking advantage of the Euler-Lagrangian principle, the governing equations covering the motion of
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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2. An investigation of the behavior of a classifying hydrocyclone with pseudoplastic fluids
The procedure usually employed for specifying a set of hydrocyclones used in Newtonian fluid-solid separation processes can be extended to the case of non-Newtonian fluids. The apparent viscosity, µapp, is the link between the two cases, and can be evaluated from the knowledge of the shear stress function, S, and the characteristic rate of shear, λ*. In or
Braz. J. Chem. Eng.. Publicado em: 2013-12
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3. Otimização da separação sólido-líquido em hidrociclones mediante modificações geométricas
Because of advantages such as low cost, simple structure, large capacity of suspension processing and small dimensions, hydrocyclones are widely used for separating dispersed phase (liquid or solids) from continuous one. The shape and size of a hydrocyclone has a decisive effect on the internal flow structure of the continuous phase, and therefore, the separ
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/11/2012
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4. MODELAGEM E SIMULAÇÃO DO TRATAMENTO DE ÁGUA OLEOSA USANDO HIDROCICLONES. / MODELING AND SIMULATION OF OILY WATER TREATMENT USING HYDROCYCLONES.
O aumento da poluição industrial tem levado os órgãos de controle ambiental a rever a legislação em vigor e a limitar de forma mais rigorosa o descarte de efluentes industriais. Em contrapartida, as empresas têm melhorado os sistemas de tratamento de seus efluentes, aplicando novas tecnologias. Na indústria de petróleo, na separação óleo-água, s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/02/2012
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5. Influence of geometric dimensions on the performance of a filtering hydrocyclone: an experimental and cfd study
Filtering hydrocyclone is a device that was developed and patented by the Particulate System Research Group at the Federal University of Uberlandia. This equipment consists of a hydrocyclone whose conical section is replaced by a conical filtering wall. Thus, during the operation of these devices, besides the underflow and overflow streams, there is another
Brazilian Journal of Chemical Engineering. Publicado em: 2009-09
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6. Modelagem e simulação de circuito de moagem através da determinação dos parâmetros de quebra e da energia específica de fragmentação
The optimization of industrial grinding circuits has been accomplished with success,using mathematical models that relate industrial data with breakage parameters and specific energy of fragmentation determined in the laboratory. In this study, a classical example of the use of this methodology is presented, where the breakage parameters and data for the spe
Publicado em: 2009
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7. Efeitos de modelos submalha em escoamentos em ciclones
A Large-Eddy Simulation (LES) of a single-phase turbulent flow in flat bottom model cyclone geometry was performed. The chosen fluid has the physical properties of air, and the particulate phase was not considered in this work, so the underflow duct was not considered idem, which means that the simulated cyclone has only one output (the overflow duct). The c
Publicado em: 2009
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8. Comportamento do hidrociclone filtrante frente às modificações no diâmetro de underflow e no tubo de vortex finder
Filtering hydrocyclones are similar equipaments to the conventional hydrocyclone except by the fact they have filtering conical region. In this way, during the operation of this equipament, besides the feed streams, the underflow and the overflow, observed commonly, the porous conical region produces liquid by the filtration process. The filtration in the co
Publicado em: 2008
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9. Desenvolvimento de modelo computacional de previsão de quebra de gotas em simulador de separação de óleo e água em um hidrociclone / Development of computational model of forecast of drops break in simulator of separation of oil and water in a hydrocyclone
The present work approaches aspects of oily water treatment, by using hydrocyclones, in a petroleum primary processing plant. It shows the hydrocyclone, its utilization in the petroleum industry and the flow phenomena occurring within it. Starting from the mass conservation and linear momentum conservation equations, assuming some hypothesis, one writes a di
Publicado em: 2008
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10. Construction and evaluation of hydrocyclones models for wastewater treatment. / Construção e avaliação de modelos de hidrociclone para tratamento de agua residuaria.
In this work five different hydrocyclones were constructed based on geometry recommended by Rietema (1961) and Bradley (1965), for evaluation of the efficiency to separate emulsified oil from water. Its aim was to maximize the hydrocyclone efficiency as wastewater pre-depurator. Oil-in-water emulsions and solutions with particles of coal and Sacaromyces cere
Publicado em: 2007
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11. Rota de processo para o underflow da deslamagem de minério de ferro do concentrador da Samarco Mineração
The iron ore reverse cationic flotation process, using etheramine as a collector/frothing and corn starch as a depressor, is very important in all major Brazilian pellet-feed concentration plants. One of the major challenges found by these plants is the metallic recovery increase, whose main factor is the reduction of iron minerals loss on the froth or true
Publicado em: 2006
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12. Otimização dos processos de separação em hidrociclones filtrantes
Filtering Hydrocyclones are devices used to solid-liquid separation and they have porous cones. Thus, during the operation these devices, besides the traditional streams (underflow and overflow), there is still an additional liquid stream from the filtration on conical area. The study and optimization of the filtering hydrocyclones were proposed in this work
Publicado em: 2006