An Asphaltene Association Model Analogous to Linear Polymerization

详细信息    查看全文

• 作者：Mayur Agrawala and Harvey W. Yarranton
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2001
• 出版时间：October 17, 2001
• 年：2001
• 卷：40
• 期：21
• 页码：4664 - 4672
• 全文大小：126K
• 年卷期：v.40,no.21(October 17, 2001)
• ISSN：1520-5045

文摘

Asphaltene self-association was modeled in a manner analogous to linear polymerization. Thekey concept in the model is that asphaltene molecules may contain single or multiple activesites (functional groups) capable of linking with other asphaltenes. Molecules with multiple activesites act as propagators and molecules with single active sites act as terminators in polymerization-like association "reactions". Asphaltenes consist primarily of propagators. Resins, whichare known to affect asphaltene association, consist primarily of terminators. The model wastested on existing molar mass data for asphaltenes in different solvents and at differenttemperatures as well as on new molar mass measurements of mixtures of asphaltene and resins.The model fit the existing experimental data well and predicted the molar mass of asphaltene-resin mixtures to within the accuracy of the measurements.