Viscosity of water-in-oil emulsions: Variation with temperature and water volume fraction
Viscosity of water-in-oil emulsions: Variation with temperature and water volume fraction
复制标题
DOI：
10.1016/j.petrol.2005.06.014
复制
发表时间：
2005-09-15
影响因子：
--
通讯作者：
Rajagopal, K
中科院分区：
文献类型：
--
作者：
Farah, MA;Oliveira, RC;Rajagopal, K
油包水乳液在石油工业的生产操作中是重要的，其中乳液的水含量可以高达60体积%，在石油精炼操作中也是重要的，其中通常水含量是低的。油包水型乳状液的有效粘度主要取决于分散相的体积分数和温度，沿着也受到剪切速率、平均液滴尺寸、液滴尺寸分布、油的粘度和密度等因素的影响。使用六种不同的原油，在大气压下使用动态粘度计测量几种合成油包水乳液在不同的剪切速率、温度和分散相的体积分数下的有效粘度。将描述粘度随温度变化的ASTM方程（方法D-341）扩展到包括分散相体积分数的变化。所提出的方程给出了良好的相关性之间的测量粘度的油包水乳液作为温度和水的体积分数的函数。(c)2005 Elsevier B. V.保留所有权利。
Water-in-oil emulsions are important in the petroleum industry in production operations, where the water content of the emulsion can be as high as 60% in volume, also in petroleum refining operations where generally the water content is low. The effective viscosity of water-in-oil emulsions depends mainly on the volume fraction of dispersed phase and temperature, along with several minor effects, such as shear rate, average droplet size, droplet size distribution, viscosity and density of oil. Using six different crude oils, the effective viscosities of several synthetic water-in-oil emulsions are measured at atmospheric pressure using a dynamic viscosimeter for different shear rates, temperatures and volume fractions of the dispersed phase. The ASTM equation, method D-341, for describing viscosity as a function of temperature is extended to include the variation of dispersed phase volume fraction. The proposed equation gives good correlation between the measured viscosities of water-in-oil emulsions as a function of temperature and the volume fraction of water. (c) 2005 Elsevier B.V. All rights reserved.