Patent ID: 9562200
Date: 2017-02-07
CPC Classifications: B01J,C10G,C10M

Claim:
1. A method for producing a lubricant base oil, the method comprising: fractionating, from a hydrocarbon oil containing a base oil fraction and a heavy fraction that is heavier than the base oil fraction, the base oil fraction and the heavy fraction to form a fractionated base oil and a fractionated heavy fraction; obtaining a dewaxed oil by isomerization and dewaxing of the fractionated base oil fraction in the presence of a hydroisomerization catalyst, hydrocracking the fractionated heavy fraction to form a hydrocracked fraction, and returning the hydrocracked heavy fraction to the fractionating step; wherein in the isomerization and dewaxing of the fractionated base oil fraction, the hydroisomerization catalyst is a hydroisomerization catalyst containing a support that includes a zeolite having a one-dimensional porous structure including a 10-membered ring and a binder, and platinum and/or palladium supported on the support, in which a carbon content of the catalyst is 0.4 to 3.5% by mass and a micropore volume is 0.02 to 0.12 cc/g; and the zeolite is derived from an ion-exchanged zeolite obtained by ion-exchanging an organic template-containing zeolite that contains an organic template and has a one-dimensional porous structure including a 10-membered ring in a solution containing ammonium ions and/or protons, in which a micropore volume per unit mass is 0.01 to 0.12 cc/g.