Effects of ultrasonic irradiation on high-viscosity oil

The present study investigates the influence of ultrasonic waves with a frequency of 21 kHz on the physicochemical properties of highly viscous oils. The experimental results demonstrate that such treatment results in a 13% reduction in oil viscosity. Furthermore, the addition of high-molecular hydrocarbons to oil increases its viscosity, whilst simultaneously reducing the effectiveness of ultrasonic treatment. The primary mechanism responsible for viscosity reduction appears to be acoustic cavitation, a process which involves the destruction of large hydrocarbon molecules. Furthermore, the group composition of the oil undergoes a transformation, characterized by a decline in the proportion of resins and an augmentation in the content of saturated hydrocarbons. The study has also unveiled the regularities of ultrasonic heating of liquids. The ultrasonic influence is accompanied by the generation of vibrations within the sound frequency range, and such mechanical vibrations may concomitantly contribute to viscosity reduction, a phenomenon that necessitates further research. The obtained results unveil novel prospects for the enhancement of oil production, refining, and transportation processes.