Effect of the Composition of Dispersion Medium on the Structural Parameters of Resins and Asphaltenes in Low-Temperature Dewaxing of Oil

被引：0
作者：
Mozhayskaya, M., V [1 ]
Pevneva, G. S. [1 ]
Surkov, V. G. [1 ]
机构：
[1] Russian Acad Sci, Inst Petr Chem, Siberian Branch, Tomsk, Russia
来源：
CHEMISTRY FOR SUSTAINABLE DEVELOPMENT | 2021年 / 29卷 / 02期
关键词：
asphaltenes; resins; structural parameters; liquefied gas dewaxing; SIMULATION;
D O I：
10.15372/CSD2021291
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Changes in the structural parameters of resin and asphaltene molecules were studied depending on the composition of the dispersion medium in the process of low-temperature dewaxing of oil. Liquefied hydrocarbon gases (propane, propane/butane, and propane/pentane) were used as a dewaxing agent. Sediments formed during dewaxing are composed of hard paraffins, resins and asphaltenes. Resins and asphaltenes were investigated by means of structural group analysis (SGA) based on PMR spectroscopy data, elemental composition and molecular weight. It is shown that variations of the oil dispersion medium due to dilution with liquefied gases lead to changes in the structural parameters (molecular weight, the number of aromatic and naphthenic rings, alkyl substituents, and the number of structural blocks in the molecule) of the average molecules of resins and asphaltenes.
引用
收藏
页码：159 / 165
页数：7
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