Investigation of the Effect of Ultrasonication on the Properties of Feedstock for Production of Compounded Road Asphalts

Krasnikov, P. E.; Gavrilov, M. M.; Efimenko, Kirill; Егоров, А. Г.; Никитченко, Н. В.; Tyukilina, P. M.; Пименов, А. А.; Ахмадова, Х. Х.; Махмудова, Л. Ш.

doi:10.1134/s0965544118080133

Cited by 3 publications

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“…In heavy crude oils, asphaltenes structure, size and interaction can change due to external conditions, such as temperature and pressure (17)(18)(19). Thus, the ultrasound energy can be employed to destruct the aggregation of the asphaltenes, which significantly reduces the viscosity of the fluid (20)(21)(22). However in some cases, it has been reported that viscosity of crude oil can be increased up to the untreated levels or even more after sonification (23)(24)(25).…”

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confidence: 99%

Relaxation Process in Crude Oil after Ultrasonic Treatment

Baimukhametov,

Dengaev,

Safiullina

et al. 2024

IJE

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This paper presents an investigation on changes in viscosity and group composition of heavy oil samples after ultrasonic upgrading process. Heavy oil samples correspond to different oilfields (located in Russia) were processed under various ultrasonic mode, the cavitation consequence of which was controlled by acoustic method. The viscosity of samples was measured just after ultrasonic treatment, 10 minutes, and 1-34 days. The saturate, aromatic, resin and asphaltene (SARA) analysis was carried out after ultrasonic treatment with 34 days of relaxation and the achieved results were compared with the SARA fractions of original crude oil. The results of viscosity measurement showed viscosity reduction after the ultrasonic treatment. However, the viscosity was regressed after 1-4 days of relaxation with further reduction in 7 days. The degree of viscosity increase after 34 days was only 10% in contrast to viscosity of original crude oil. The power and the sonication time did not influence the relaxation process. In conclusion, attention was drawn to the results of SARA analysis, the content of saturates decreased and the relative content of heavy fragments such as resins and asphaltenes was increased, which determines the degree of viscosity increase after relaxation period.

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