SABER UCV >
1) Investigación >
Artículos Publicados >

Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/123456789/6401

Título : Measurement of the refractive index of crude oil and asphaltenes solutions: Flocculation onset determination
Autor : Castillo, Jimmy
Gutiérrez, Héctor
Ranaudo, María Antonieta
Palabras clave : crude oil refrective index
asphaltene floculation
Fecha de publicación : 16-Nov-2009
Editorial : Energy & Fuels
Citación : Energy Fuels, 2010, 24 (1), pp 492–495
Resumen : In this work, we measure the refractive index of crude oils and asphaltene in toluene solutions using a fiber optic refractometer designed to work with high-viscosity and high optical density samples. The data of the samples were analyzed using the Lorentz−Lorenz theory and simple mixing rules. The refractive index for crude oils without dilution for three crude oils with different American Petroleum Institute (API) degree, asphaltene quantity, and stability were measured. Flocculation onset for crude oils and asphaltene solutions were measured using n-heptane as the precipitant agent. Results showed that medium crude oils and maltenes from medium, heavy, and extra-heavy crude oils follow the Lorentz−Lorenz mixing rule. In the case of Boscan crude oil, a sample without any significant asphaltene precipitation problems, the refractive index is lower than that obtained for toluene. In contrast, Furrial crude oil, a sample with severe asphaltene precipitation problems, gave a refractive index higher than toluene. Finally, asphaltene flocculation onset was clearly followed by refractive index measurement in crude oils and asphaltene in toluene solutions after n-heptane addition.
URI : http://saber.ucv.ve/jspui/handle/123456789/6401
Aparece en las colecciones: Artículos Publicados

Ficheros en este ítem:

Fichero Descripción Tamaño Formato
ef900861d.pdf1 MBAdobe PDFVisualizar/Abrir

Los ítems de DSpace están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2008 MIT and Hewlett-Packard - Comentarios