Home – Home – Jornals – Chemistry for Sustainable Development 2019 number 5

Regulation of the transport characteristics of oil is often implemented with the help of depressor and inhibiting additives. A characteristic feature of new developments in the area of oil additives is the composite nature (two or more components of the active substance), which provides their multifunctional action. Results obtained in the investigation of the effect of complex additives based on polyalkylacrylate (PAA) and petroleum-polymer resins modified through nitration (N-PPR) on the chilling temperature and viscosity of paraffin and high-paraffin oils of West Siberia, as well as on the amount and composition of asphaltic resinous paraffin sediments (ARPS) are presented. It is established that, in comparison with the additive based on PAA, the complex additive causes a decrease in the amount of ARPS (by 10 % as average), a two-fold increase in the depression of oil chilling temperature and a decrease in its dynamic viscosity. The efficiency of the complex additive was revealed to depend on the method of N-PPR preparation. The best results with respect to all parameters are demonstrated by the additives for which the N-PPR were synthesized by means of ion and initiated polymerization. It was shown in the evaluation of the surface activity of resinous asphaltene oil components and the components of the developed compositions that among the studied samples N-PPR are characterized by the lowest surface tension. The resins of oil kinds under investigation differ from each other in surface tension only insignificantly. Among all components, asphaltenes are characterized by the highest surface tension. A new complex additive based on PAA and modified PPR is proposed, which may be used to reduce the chilling temperature and viscosity of paraffin and high-paraffin oil, as well as the amount of ARPS formed in them.