TY - THES

T1 - Study of the application of pour point depressants on main oil pipelines

AU - Lisovskiy, Nikita

N1 - no embargo

PY - 2023

Y1 - 2023

N2 - This work deals with the complexities of transporting and storing highly paraffinic as well as highly solidified oils. The aim was to consider the problems of the use of depressant additives in the use of ultrasound treatment against asphalt tar and paraffin deposits on the surface of the equipment. The second objective was the possibility of activation and stability of additives by ultrasound treatment of oil with them, because in theory the fractured supramolecular structure, accelerated diffusion and the temperature effect contribute to a more effective work of the additives. The results showed that high pour pointing oil becomes more solidified, on both small and large volumes of treatment. In other words, the use of ultrasound to remove asphalt resin paraffin content on high solidification oil carries a risk of solidification of the oil in the tank itself. In the work, experiments were carried out that directly show that when exposed to ultrasound on highly paraffinic oil with a high pour point, an effect occurs according to which the pour point increases. According to our experiments, when the additive and sonication work together, a relatively small synergistic effect is observed at low concentrations of the depressant that is most resistant to sonication. In general, pour point depressants, in addition to the case described above, lose their effectiveness when exposed to ultrasound, both partially and completely, however, there are additives that lose a relatively small part of their effectiveness, thereby being resistant to ultrasound.

AB - This work deals with the complexities of transporting and storing highly paraffinic as well as highly solidified oils. The aim was to consider the problems of the use of depressant additives in the use of ultrasound treatment against asphalt tar and paraffin deposits on the surface of the equipment. The second objective was the possibility of activation and stability of additives by ultrasound treatment of oil with them, because in theory the fractured supramolecular structure, accelerated diffusion and the temperature effect contribute to a more effective work of the additives. The results showed that high pour pointing oil becomes more solidified, on both small and large volumes of treatment. In other words, the use of ultrasound to remove asphalt resin paraffin content on high solidification oil carries a risk of solidification of the oil in the tank itself. In the work, experiments were carried out that directly show that when exposed to ultrasound on highly paraffinic oil with a high pour point, an effect occurs according to which the pour point increases. According to our experiments, when the additive and sonication work together, a relatively small synergistic effect is observed at low concentrations of the depressant that is most resistant to sonication. In general, pour point depressants, in addition to the case described above, lose their effectiveness when exposed to ultrasound, both partially and completely, however, there are additives that lose a relatively small part of their effectiveness, thereby being resistant to ultrasound.

KW - Pour point depressants

KW - ultraond treatment

KW - pour point

KW - high-paraffin oil

KW - ethylene vinyl acetate

KW - main pipeline transport of high pour point oil

KW - complex impact of ultrasound and additives

KW - ARPD

KW - Pourpoint-Senker

KW - Ultraond-Behandlung

KW - Pourpoint

KW - Öl mit hohem Pourpoint

KW - Ethylenvinylacetat

KW - Transport von Öl mit hohem Pourpoint durch die Hauptpipeline

KW - komplexe Auswirkungen von Ultraschall und Additiven

KW - Ablagerungen von Asphaltenharzparrafin

U2 - 10.34901/mul.pub.2023.208

DO - 10.34901/mul.pub.2023.208

M3 - Master's Thesis

ER -