Determination of crude oil incompatibility regions by ellipsometry

被引：9

作者：

Alvarez, P. ^{[1
]}

Menendez, J. L. ^{[2
]}

Berrueco, C. ^{[3
]}

Rostani, K. ^{[3
]}

Milian, M. ^{[3
]}

机构：

[1] CSIC, Inst Nacl Carbon, E-33080 Oviedo, Spain

[2] Univ Oviedo, Principado Asturias CSIC, CINN, Uanera 33428, Asturias, Spain

[3] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn, London SW7 2AZ, England

来源：

FUEL PROCESSING TECHNOLOGY | 2012年 / 96卷

基金：

英国工程与自然科学研究理事会;

关键词：

Crude oil; Fouling; Ellipsometry; SPECTROSCOPIC ELLIPSOMETRY; STABILITY; FILMS;

D O I：

10.1016/j.fuproc.2011.12.007

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Crude oil incompatibility is a common problem in the oil industry and may lead to severe fouling of process units, such as the pre-distillation heat exchanger train. This work investigates the use of ellipsometry to evaluate the compatibility of crude oil blends. Two crude oils with predicted regions of compatibility and incompatibility were blended in several ratios and the formation of a denser phase was examined by ellipsometry. The procedure implies the evaluation of the real part of the refractive index of the crude oils and their mixtures. which can be linked to the density of the mixture. The ellipsometric measurements fit well theoretical predictions obtained using a Cauchy dielectric function for the pure crudes and the Maxwell-Garnett effective medium model for the mixtures. The regions of compatibility and incompatibility between the two crudes were checked against independent measurements of deposit formation by weight and predictions based on the insolubility and solubility blending numbers, showing good agreement. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：16 / 21

页数：6

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