METHOD FOR PRODUCING LUBRICANT BASE OIL

摘要

Provided is a method for producing a lubricant base oil, said method making it possible to produce a lubricant base oil having a high viscosity index at high yield. One embodiment of the method for producing the lubricant base oil according to the present invention comprises: a first hydroisomerization step in which a petroleum-derived hydrocarbon oil is brought into contact with a hydroisomerization catalyst; a second hydroisomerization step in which a synthetic oil synthesized by the Fischer-Tropsch process is brought into contact with the hydroisomerization catalyst used in the first hydroisomerization step; and a third hydroisomerization step in which the petroleum-derived hydrocarbon oil is brought into contact with the hydroisomerization catalyst used in the second hydroisomerization step.