| 摘要 |
PURPOSE:To provide a process for the hydrogenative purification of a heavy oil rich in heavy metal components while suppressing the lowering of the catalyst activity caused by the deposition of the heavy metals on the catalyst layer of a fixed bed hydrogenation apparatus and suppressing the formation of coke causing the channeling of the stock oil in the catalyst layer. CONSTITUTION:This hydrogenative demetallization treatment of a heavy oil comprises a hydrogenative demetallization treatment step to hydrogenate slurry heavy oil composed of a powdery catalyst having an average particle diameter of 0.1-200mum and containing ferromagnetic particles and a heavy oil containing >=10ppm of nickel and vanadium in total as heavy metal component in the presence of hydrogen at 300-500 deg.C under 10-250kg/cm<2> pressure to deposit the heavy metal component on the powdery catalyst and a catalyst separation step to supply a part or total of the produced slurry oil obtained by the hydrogenative demetallization treatment and containing the powdery catalyst having deposited heavy metal component to a catalyst separation apparatus to separate the major part of the powdery catalyst holding deposited heavy metal component and supply the oil to a magnetic separator to separate a small amount of the powdery catalyst remaining in the produced oil. This invention also relates to a hydrogenative treatment process including the hydrogenative demetallization treatment. |
