| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for producing a lubricant base oil, with which a lubricant base oil having low viscosity, a high viscosity index and low evaporation property is efficiently and inexpensively obtained. <P>SOLUTION: The method for producing a lubricant base oil comprises a process for preparing a hydrocracking catalyst obtained by supporting at least one kind of a metal of the group VIa of the periodic table and at least one kind of a metal of the group VIII on a carrier having≤80% fraction of desorption amount at 300-800°C based on the total desorption amount of NH<SB>3</SB>in NH<SB>3</SB>desorption temperature-dependency evaluation, a process for hydrocracking a raw material oil containing≥50 vol.% of slack-wax in the presence of the hydrocracking catalyst under 0.1-14 MPa hydrogen partial pressure at 230-430°C average reaction temperature at 0.3-3.0hr<SP>-1</SP>LHSV at 50-14,000 scf/b ratio of hydrogen to oil, a process for distilling and separating the obtained hydrocracked oil to give a lubricating oil fraction and a process for dewaxing the lubricating oil fraction. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
