DEWAXING WAXY OIL BY DILUTION CHILLING EMPLOYING STATIC MIXING MEANS

摘要

An improved process for the solvent dewaxing of petroleum oil stocks. Wax-containing oil is chilled in an elongated chilling zone by introducing cold dewaxing solvent into said zone, at a plurality of points along same, said chilling zone containing or having associated with it a plurality of static means for mixing the solvent and wax-containing oil, thereby avoiding shock chilling without the need for the intense agitation and/or dynamic agitators normally required for such processes.