Magnetic resonance imaging (MRI): a technique to study flow an microstructure of concentrated emulsions

Autor(es)

M. A. d'Avila ^[1] ; R. L. Powell ^[2] ; R. J. Phillips ^[3] ; N. C. Shapley ^[4] ; J. H. Walton ^[5] ; S. R. Dungan

Afiliação do(s) autor(es)

^[1] Universidade Estadual de Campinas. Faculdade de Engenharia Química. Departamento de Processos Químicos - Brasil

^[2] University of California. Department of Chemical Engineering and Materials Science - Estados Unidos

^[3] University of California. Department of Chemical Engineering and Materials Science - Estados Unidos

^[4] Columbia University. Department of Chemical Engineering

^[5] University of California. NMR Facility - Estados Unidos

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Journal of Chemical Engineering; v. 22, n. 1, p. 49-60, 2005-03-00.

Resumo

Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) have recently been recognized as important techniques for R&D of products and processes, as is attested by several successful applications in different areas of chemical engineering in recent years. In this article we present new experimental methods based on MRI to study flow and microstructure of concentrated emulsions. The objective is to present the unique features of this noninvasive technique to accurately measure different properties of flowing particulate opaque systems. Experimental results of velocity profiles, spatial distribution of droplet sizes and spatial homogeneity of an oil-in-water dispersion in a horizontal, concentric cylinder geometry using different pulse sequences are presented. The application of these techniques allowed probing important information on flow and microstructure of multiphase systems of interest in chemical engineering and food science. (AU)

• Processo FAPESP: 03/01892-0 - Simulação do escoamento gás-particulados em ciclones utilizando técnicas de CFD: avaliação de geometrias industriais
• Beneficiário: Marcos Akira d'Ávila
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado