Set of miniaturized structure used for manipulation of mixture. / Conjunto de estruturas miniaturizadas para manipulação de misturas.

AUTOR(ES)

Lilian Marques Silva

DATA DE PUBLICAÇÃO

2010

RESUMO

Nowadays, mainly due to products miniaturization, engineering faces new horizons, which can be easily exemplified by the enhancement on nanotechnology development. Furthermore, not only environmental contamination but also environmental monitoring must be addressed in order to produce a systemic knowledge. Therefore, the aim of this work was to determine how a group of miniaturized structures could be used on particle removal and component separation on a mixture. Also a secondary target was to develop a simple methodology in order to determine the fluid behavior inside the structures where particle material and small dimensions hinder flow passage. The use of packed channels is common not only in Chemical Engineering, on synthesis production, but also in Chemistry, for chemical analysis. Tests were carried out using equipment normally present in Chemistry to evaluate a set of structures composed by: one spray, two different impactors and other two different structures (one of them with five different outlets) for separation of volatile organic compounds. Tests were performed in liquid and gaseous phases and used several reactants (kerosene, gasoline, acetone, 2-propanol and ethanol) and their mixtures; pure reactants allow evaluation of the resident time and comparison with mixtures behavior. Simulations were also performed and the structure behavior evaluated by tracers shows good agreement with simulations data. The whole group of structures allows the production of spray with up to 10mm droplet dimension and the footprint of components in a mixture, i.e., the obtained data can be disposed as qualitative and quantitative tables, which describe several phenomena, such as diffusion, separation of compounds, load loss, etc. These structures present several advantages since dimensions on mesorange not only facilitate their production and manipulation bur also allow to unravel phenomena occurring inside the structures.

ASSUNTO(S)

adsorbents thin films filmes adsorventes estruturas miniaturizadas distillation destilação separação de misturas impactador impactors separation of mixtures miniaturized structures

Documentos Relacionados

• Desenvolvimento de equipamento de teste de estruturas miniaturizadas: testes em estrutura útil na eliminação de partículas.
• Desenvolvimento e aplicação de técnicas miniaturizadas de preparo de amostras para análises ambientais via GC-MS
• Uma revisão do fator de Bayes com aplicação à modelos com misturas.
• Natural 25,26-dihydroxyvitamin D3 is an epimeric mixture.
• Avaliacao do valor nutritivo de silagens de girassol de milho e de suas misturas.