Pour point depressants for waxy crude oil based on used sun flower oil

The deposition of paraffin wax from crude oil at low temperature is one of the serious problems that induce high viscosity and poor flowability which restrict the processing of crude oil and causes huge economic loss. Pour point depressants (PPDs) has been proved to be an efficient way to inhibit wax deposition. In the present work, six terpolymer pour point depressants comprised of [sunflower oil- octadecane- acrylic acid/vinyl acetate] at different molar ratio were prepared by a facile method. These are coded as SOA and SOV respectively. The chemical transformation of sun flower oil was proved by FTIR spectroscopy and their molecular weights were estimated via GPC. In comparison to composition and operational parameters, the produced additives' effectiveness as pour point depressants for waxy crude was confirmed. Moreover, the surface tensions at dodecane versus different concentrations at 25oC were displayed in order to verify the surface activity of the green terpolymers. The pour point measurements showed that PP temperature of the examined waxy crude was reduced by the addition of the investigated surfactants according the variation of molar ratios comprising the terpolymer. The data revealed that the additive SOA1displayed maximum reduction in the pour point of crude oil samples. .