Fluidization
Mostrando 37-48 de 85 artigos, teses e dissertações.
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37. Development of a fluidized bed system for adsorption of phenol from aqueous solutions with commercial macroporous resins
This work is related to removal of phenol from wastewaters by adsorption onto polymeric resins, a current alternative to activated carbon. A closed circuit, bench-scale liquid fluidized bed system was developed for this purpose. Phenol aqueous solutions with initial concentrations in the range of 0.084 to 0.451 kg/m³ were used to fluidize small permeable ca
Brazilian Journal of Chemical Engineering. Publicado em: 2007-03
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38. A turbulent bed contactor: energetic efficiency for particle collection
Particle collection experiments were conducted in a fluidizing irrigated bed to evaluate the performance of mobile packings: 38 x 50 mm plain oblate spheroids 38 mm ID plain spheres and alternative perforated spheres with a 38 mm ID and 10% and 25% free areas were used as fluidizing media in a 0.264 m diameter and 1.20 m high turbulent bed contactor (TBC). P
Brazilian Journal of Chemical Engineering. Publicado em: 2007-03
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39. Estudo da fluidodinâmica de leito vibro-fluidizado horizontal
Aplicações da vibração mecânica com o intuito de facilitar a fluidização e aumentar as transferências de calor, massa e quantidade de movimento são processos comumente utilizados nas agroindústrias, como por exemplo, na granulação, revestimento e, sobretudo a secagem, onde se concentra o maior número de aplicações. Outras vantagens do uso da v
Publicado em: 2007
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40. Estudo da fluidodinâmica de leito vibro-fluidizado horizontal
Aplicações da vibração mecânica com o intuito de facilitar a fluidização e aumentar as transferências de calor, massa e quantidade de movimento são processos comumente utilizados nas agroindústrias, como por exemplo, na granulação, revestimento e, sobretudo a secagem, onde se concentra o maior número de aplicações. Outras vantagens do uso da v
Publicado em: 2007
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41. An analysis of process heat recovery in a gas-solid shallow fluidized bed
This work presents an experimental study of a continuous gas-solid fluidized bed with an immersed horizontal tube. Silica sand (254mm diameter) was used as solid particles and air was used for fluidization in a 900mm long and 150mm wide heat exchanger. Measurements were made under steady state conditions for a solid particle mass flow rate from 14 to 95kg.h-
Brazilian Journal of Chemical Engineering. Publicado em: 2006-12
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42. Projeto, desenvolvimento, otimização e scale-up de um leito fluidizado para classificação de fosfato bicálcico microgranulado
Brazil holds second place in world production of dicalcium phosphate, which represents the main source of phosphorus for complementing the mineral salt that makes up the daily feed for cattle, hogs and fowls. Considering the fact that the increase in consumption of phosphates due to the increased annual consumption of meat by the world population, developmen
Publicado em: 2006
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43. Characterization and recovery of alfa and beta amylases enzymes by expanded bed adsorption systems / Caracterização e recuperação das enzimas alfa e beta - amilases em sistema de adsorção em leito expandido
Aiming to development of new technologies, in this work a and b-amylases recovery from maize (Zea mays) malt by expanded bed adsorption (EBA) was studied in order, to aggregate value to the maize culture which is diffused into our Country. Thus, the optimization of the manufacture steps of maize malt, since the germination (changing the time) until the dryin
Publicado em: 2006
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44. Estudo do recobrimento de celulose microcristalina em leito fluidizado pulsado rotativo / Study of microcrystaline cellulose coating in rotative pulsed fluidized bed
The coating process of microgranules in a Rotative-Pulsed Fluidized Bed was investigated through the accomplishment of microcrystalline cellulose (MICROCEL) coating experiments. The influence of particle load, gaseous stream pulsation frequency, suspension flow rate, pressure of atomization and drying temperature on the coating efficiency, relative growth an
Publicado em: 2006
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45. Fluidodinamica, secagem e recobrimento em leito pulso-fluidizado / Fluid-dynamics, drying and coating in a pulsed fluid bed
O presente trabalho teve como objetivos principais analisar as operações de secagem e recobrimento desenvolvidas em leito pulso-fluidizado. Estudos fluidodinâmicos realizados com feijão, trigo e peneira molecular permitiram a comparação desta técnica com a fluidização convencional, principalmente no que concerne à queda de pressão no leito e às v
Publicado em: 2006
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46. Desenvolvimento de equipamento para recobrimento de partículas em leito de jorro fluidizado / Apparatus Developing for Particle Coating in Spoutfluidized bed
The coating of solids particles has the most important application in controlled release technical. Needing to suppress agglomeration is among determination of process conditions that attend requirement to production capsules with characteristics required for protection or controlled release. The purpose of this work is joining the requirements of process th
Publicado em: 2005
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47. Estudo fluidodinamico de um leito fluidizado pulsado rotativo com particulas secas e umidas / Rotating pulsed fluidized bed fluidynamics of dry and moist particles
The rotating-pulsed fluidized bed (RPFB) has been studied as an alternative for fluidization of materials that are difficult to operate in the Conventional Fluidized Bed (CFB). The RPFB apparatus is a conventional fluidized bed modified by the addition of a rotating plate with a 60º opening just below the distributor. The rotating plate insures a cyclic fee
Publicado em: 2005
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48. AnÃlise dinÃmica de um forno rotativo piloto contÃnuo para produÃÃo de gesso beta com GLP
Direct contact rotary kilns are widely used equipments with many industrial applications. The evaluation of the residence-time of the particles on these reactors is fundamental in the development of controlled and optimized systems. In the present work, a technique to measure the residence-time distribution (RTD) was developed in a rotary kiln of 5,45m long
Publicado em: 2005