Study on Refining Lubricating Oil in RDC with Furfural

The problem of extraction of lubricating oil in RDC with furfural has been studied.Factors such as rotating speed,solvent ratio and temperature gradient along the column have been investigated.In optimum operating condition,the quality of lubricating oil,such as viscosity index,percentage yield are all at high level.The relations between viscosity index or percentage yield and operating factors are also presented in the form of dimention less group.