Applying additive-modifiers in dewaxing raffinate process

Abstract

Dewaxing petroleum oil raffinates is carried out by low-temperature rectification in sovents acetone – toluene. To intensify the process as an additive-modifier we used ε -caprolactam. Analysis of structural-group composition dewaxed raffinate by infrared spectroscopy showed that in the presence of ε -caprolactam selectivity of dewaxing is increased due to smaller content slack aromatic, branched paraffins and oxygenates structures. However, if the content of ε -caprolactam > 1 wt % selectivity of separation is reduced, apparently by increasing solvent power system acetone – toluene ( ε -caprolactam).