abstract |
(57) [Summary] [PROBLEMS] To provide a new method for hydrotreating heavy oil. SOLUTION: By sequentially carrying out a combination of hydrodemetallation treatment, hydrodesulfurization treatment and isomerization desulfurization treatment, at least one selected from desulfurization of heavy oil, denitrification, decarbonation and deasphaltenes. A method for hydrotreating heavy oil that performs one type of treatment. |