石油沥青质胶态粒子宏观结构尺寸的研究

研究沥青质溶液的胶体结构、胶态粒子的形成、形态和宏观尺寸，对石油的勘探、开发、储运以及加工都具有非常重要的意义。在研究沥青质胶体分散特性的基础上，进一步了研究沥青质胶态粒子的宏观结构尺寸。根据Einstein粘度定律导出以增比粘度计算沥青质胶粒宏观尺寸的方法，确定了胜利沥青溶解于苯、甲苯和四氢呋喃溶剂中沥青质胶粒的大小。结果表明，沥青质在稀溶液中以单分子分散的胶粒形式存在，胶粒的宏观尺寸在8～11nm之间，溶剂和温度对溶剂化层中胶质和芳香分的解离作用很小。

Macro-Size of Asphaltene Colloidal Particles in Organic Solvents

It is very important to study the colloidal structure of asphaltene solutions, the formation of the colloidal particles, its shape and macro-size to petroleum exploration, store,trasportation and processing. In the paper, the macro-sizes of the asphaltene colloidal particles were investigated based on the previous study of the dispersion characteristics of asphaltene in organic solvents (benzene, toluene and THF). A method to calculate macro-size of the colloidal particle from relative viscosity was derived from Einstein's law. And the micro-sizes of colloidal particles of Sheng Li asphaltene in above mentioned solutions were determined. The results show that there are no obvious aggregation or flocculation of asphaltene particles in dilute solutions. The macro-sizes of the colloidal particles are between 8～11 nm. The temperature and the characteristics of solvents have a few effects on the colloidal particles.