Drop Size Distribution
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. AN ANALYSIS OF THE DROP BREAKUP PROCESS IN AN OIL IN WATER EMULSION FLOWING TETWEEN PARALLEL DISKS / ANÁLISE DO PROCESSO DE QUEBRA DE GOTAS DE UMA EMULSÃO ÓLEO-ÁGUA NO ESCOAMENTO ENTRE DISCOS PARALELOS
Oil production is usually associated with the production of water, which may be found as a continuous phase or as a dispersed phase, in emulsions. Emulsions may be found in almost all the production stages: in reservoirs, production wells, production facilities, pipelines, in processing and in storage. The Electric Submersible Pump (ESP) is one of the method
Publicado em: 2010
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2. Tratamento de esgoto sanitário em um reator de leito expandido em escala plena, operado com regiões anaeróbia e aeróbia sobrepostas / Treatment of sanitary wastewater in a full scale expanded bed reactor, operated with overlap anaerobic and aerobic regions
This present research had as main objective the evaluation of the performance of a full scale expanded bed reactor (159.0 M POT.3), operated under anaerobic and overlapping anaerobic-aerobic, treating sanitary wastewater. As specific objectives, it was evaluated using commercial sand to complement the bed of particles and distribution of material support alo
Publicado em: 2009
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3. A study of the drop size distributions and hold-up in short Kühni columns
The hydrodynamic behaviour of a short Kühni column was investigated under no mass transfer conditions using the binary system water (continuous phase) and Exxsol D-80 (dispersed phase). The counter-current flow pattern of the liquid phases was characterised regarding the Sauter mean drop diameter, drop size distribution and hold-up; a photographic method wa
Brazilian Journal of Chemical Engineering. Publicado em: 2008-12
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4. Characteristics of flow in wet conical spouted beds of unequal-sized spherical Particles
Interparticle forces, developed in wet spouted beds composed of a mixture of spherical particles with different size distributions, intensify particle segregation mechanisms interfering in gas distribution inside the bed and, consequently, in the spouting flow characteristics. Therefore, this paper is aimed at describing the effect of interparticle forces on
Brazilian Journal of Chemical Engineering. Publicado em: 2008-03
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5. Estudos morfologicos e ecologicos de especies de Lonchaeidae (Diptera) em frutos de Rubiaceae, Myrtaceae, Roseae e Fabaceae / Morphological and ecological studies of Lonchaeidae (Dipter: Tephritoidea) in fuits of Rubiaceae, Rosaceae and Fabaceae
Brazil performs excellent climate conditions to become one of the largest producers of tropical fruits in the world. Despite the Brazilian role in world production of fruit, its participation in the international market is too low, due some trend obstacles and the guarantee of pest-free zones it has to offer. Fruit flies (Diptera: Tephritidae e Lonchaeidae)
Publicado em: 2008
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6. GERAÇÃO DE EMULSÕES DURANTE A PRODUÇÃO DE PETRÓLEO / EMULSION GENERATION DURING OIL PRODUCTION
Emulsion formation during oil production may take place in the flow inside the reservoir or in the two-phase flow down hole in production wells, and through pipelines and valves in surface facilities. Emulsions can cause a number of operational problems such as tripping of equipment in gas-oil separations plants and high pressure drops in flow lines. Flow co
Publicado em: 2007
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7. Filtração de gases: estudo da deposição de diferentes tortas de filtração em diferentes meios filtrantes.
The particle retention inside a filter medium, after cleaning, significantly improves the initial pressure drop during the subsequent cycle, that is, the residual pressure drop. However, the way as these particles accommodate inside the filter isnt still very clear, as well as, its impact on filtering performance. This work aims to verify the spatial disposa
Publicado em: 2006
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8. Análise do comportamento da fluidodinâmica do leito de jorro com misturas de tamanho de partículas.
This research study presents an investigation to quantify the stability of spouting regimes (by pressure fluctuations) and particle segregation level in conical spouted beds operated with a variety of particle combinations with uniform size or size distribution. In the presence of glycerol, a study on the effect of interparticle forces in the conical spouted
Publicado em: 2006
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9. Coalescence of immiscible in wasterwater Lona / Coalescencia de imisciveis em filme de agua residuaria
Águas residuárias urbanas e industriais, cujo destino final em nível mundial é o rio, sempre apresentam imiscíveis na forma de película e gotas, sejam de óleos comestíveis ou óleos lubrificantes ou solventes petroquímicos. A grande dificuldade em separar estes imiscíveis está no diâmetro de gotas inferior a 40 microns. A melhor tecnologia, hoje,
Publicado em: 2006
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10. Estudo da hidrodinâmica de uma coluna de extração Kühni
This work aimed at the experimental study of the hydrodynamic behavior of liquid-liquid extraction columns. A section of a pilot scale Kühni column containing 5 stages with 150 mm of diameter has been used. The study has been carried out in the absence of mass transfer between phases. The binary system water/Exxsol D-80 was employed. In all runs, water has
Publicado em: 2005
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11. Modelagem, simulação e analise de desempenho de reatores tubulares de polimerização com deflectores angulares internos
Deterministic model and emulsion homopolymerization process of styrene are applied in continuous tubular reactor without and with internal angular baffles under isothermic and no isothermic conditions. The modeling and simulation results were approximate to steady state, one-dimensional model, cylindrical coordinate, fully developed laminar plug flow, Smith-
Publicado em: 2004
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12. Temporal and spatial dynamics of citrus black spot (Guignardia citricarpa) and quantification of the damages caused to citrus culture. / Dinâmica temporal e espacial da mancha preta (Guignardia citricarpa) e quantificação dos danos causados à cultura dos citros.
The fungus Guignardia citricarpa is the causal agent of citrus black spot (CBS), which is a disease that become the fruits unsightly and unsuitable for the fresh fruit market. Besides, premature fruit drop may occur, reducing the productivity. A diagrammatic scale for the two symptoms of CBS (hard spot and false melanose) was developed to evaluate the severi
Publicado em: 2004