Flow Bench
Mostrando 25-36 de 47 artigos, teses e dissertações.
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25. Analysis of blowmold machine hydraulic system to reduce positioning time. / Análise do sistema hidráulico de uma sopradora para redução do tempo de posicionamento.
Many times, for some products classes, inputs as packaging may have an expressive weight in the final product cost structure. In the case of products packaged into plastic containers, this is an usual scenario that has as result, the increase of performance requirements of the blow mold machines that produce such containers. A point to be studied in the blow
Publicado em: 2007
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26. Dynamic and control of drippers clogging due to chemical precipitates and fitoplankton content / Dinâmica e controle do entupimento de gotejadores em função de precipitados químicos e fitoplâncton
This study attempts to quantify the flow rate variation in drippers (trickle irrigation) submitted to water with different hardness (Langelier Saturation Index), others fertilizer precipitates and fitoplankton content. The experiment was accomplished in three phases, 26 models of self-compensating (SC) and conventional (C) drippers were used. Drip lines were
Publicado em: 2007
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27. Removal of the organic contaminants β-estradiol and saxitoxins (STX, Neo-STX and dc-STX) by nanofiltration : bench scale / Remoção dos contaminantes orgânicos B-estradiol e saxitoxinas (STX, Neo-STX e dc-STX) por meiom de nanofiltração : avaliação em escala de bancada
The aim of work was to investigate the removal of β-estradiol and saxitoxins (STX, dc- STX and Neo-STX) by nanofiltration. These contaminants were selected due to its growing detection in drinking water reservoirs and their potential risk to human health, even at low concentrations. According to the literature, these substances are only poorly removed b
Publicado em: 2007
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28. Projeto e construção de um condicionado de combustiveis / Project and construction of a fuels conditioning system
This study evaluates the existing technology of converting the various residues in oil refineries and compares with the new technology of that the Grupo Combustíveis Alternativos (GCA), in conjunction with Petrobras and CENPES would apply to the conversion of the residue of the Vacuum distillation. Also studied is one of the components of the reactor Fast P
Publicado em: 2006
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29. Estimation of mass transfer parameters in a Taylor-Couette-Poiseuille heterogeneous reactor
A bench-scale, continuous vortex flow reactor (VFR), with a radius ratio, h, equal to 0.48 and an aspect ratio, G, equal to 11.19 was studied. This reactor may be used in the enzymatic hydrolysis of polypeptides obtained from sweet cheese whey with enzymes immobilized on agarose gel. Operational conditions were 2410 < Re q < 11793 and 30-min residence time f
Brazilian Journal of Chemical Engineering. Publicado em: 2004-06
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30. Efeitos das relações DQO/ SO IND.4 POT.-2 e das variações progressivas da concentração de sulfatos no desempenho de reator anaeróbio horizontal de leito fixo (RAHLF) / Effects of the COD to sulfate ratio and of the progressive variations of sulfate concentrations on the performance of a bench-scale horizontal-flow anaerobic immobilized sludge (HAIS) reactor
Os efeitos das relações DQO/sulfato e das variações progressivas da concentração de sulfato sobre o desempenho de um reator anaeróbio horizontal de leito fixo (RAHLF) em escala de bancada, tratando substrato sintético submetido a aumentos na concentração de sulfato afluente, foram investigados. O substrato sintético foi composto por glicose, aceta
Publicado em: 2003
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31. Construção de uma bancada de ensaio e avaliação de um sistema de mensuração da produtividade de grãos. / Construction of a laboratory bench and evaluation of a grain yield monitor.
With the progress of the precision agriculture where spatial yield variability is taken into account, it is necessary to improve data collection so the results can be more reliable. It is necessary to understand how yield sensor used on combines works in order to know the accuracy of the field data for generation of the yield maps. This work aims to characte
Publicado em: 2002
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32. Remoção de nitrogenio do esgoto sanitario pelo processo de lodo ativado por batelada
The excess of nutrients found in domestic or industrial wastewaters, like nitrogen and phosphorus, may lead to a process of eutrofication and originate adverse effects to the environment and to the human health. For this reason it is very important to consider an advanced treatment of those wastewaters when dealing with water resources, including their reuse
Publicado em: 1995
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33. Estudo da incineração catalitica de compostos volateis organicos em planta piloto
The work presents the study of oxidation of hidrogen over Pallladium supported on Alumina. The catalyst was prepared by impregnation of the precursor salt PD CL IND. 2 on Alumina particles sized by extrusion and sintering. The salt decomposing at the surface was done by thermal treatment at the temperature of 400 DEGREES C followed by reduction with hydrogen
Publicado em: 1995
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34. Oxidação do hidrogenio diluido em ar sobre catalisador de paladio
The oxidation of hydrogen in air with a palladium/alumina catalyst is studied in this work. The catalyst was prepared in laboratory through impregnating PdCl IND. 2 in a support of alfa -alumina extruded and sisterizied. The kinetic data were collected in a bench scale experimental set up with following parts: feeding system and flow rates measurements, dryi
Publicado em: 1993
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35. Hidropirolise rapida (HPR) do carvão mineral de candiota
Coal in Brazil is an abundant natural resource, but marginally developed. Main uses are: burning for thermoelectricity or industrial heat, and reducing agent in the steel industry. Samples from Candiota, a high ash non-coking coal from Rio Grande do Sul, were pyrolised in H2 atmosphere at a bench unit specially developed, composed by an entrained bed down fl
Publicado em: 1989
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36. Laboratory contamination of blood cultures.
A prospective study of the use of a laminar flow cabinet, an exhaust-ventilated safety hood, and the open bench for the microbiological examination of blood is described. Blood samples from 1600 patients were subcultured on the open bench, 2700 in a safety hood, and 2607 in a laminar flow cabinet. Use of the laminar flow cabinet produced a significantly grea