DEACIDIFICATION OF DAGANG SECOND LUBRICATING OIL DISTILLATE BY COMBINED SOLVENT

A combined solvent was used for getting rid of the acid components of lubricating oil distillates. Data indicate that this solvent can remove most of the acid matters. The deacidified oil has better light stability than hydrodeacidified oils. This solvent can be reused and recovered. The reaction conditions are easy to be fulfilled. This deacidification method is an effective technology to remove the acid matters of high acid number feed stocks of lubricating oil distillates.