Patent ID: 8906969

Claim:
A method for producing a hydrocarbon oil, comprising: a step of obtaining a hydrocarbon oil containing a catalyst fine powder derived from a catalyst by a Fischer-Tropsch synthesis reaction using a slurry bed reactor holding a slurry containing a liquid hydrocarbon and the catalyst suspended in the liquid hydrocarbon within the slurry bed reactor; a step of fractionating the hydrocarbon oil into at least one distilled oil and a column bottom oil containing the catalyst fine powder using a rectifying column; a step of transferring at least part of the column bottom oil to a storage tank, and sedimenting the catalyst fine powder to a bottom of the storage tank to capture the catalyst fine powder; and a step of transferring a residue of the column bottom oil from the rectifying column to a hydrocracker, and/or transferring a supernatant of the column bottom oil in which the catalyst fine powder is captured in the storage tank from the storage tank to the hydrocracker to hydrocrack the residue of the column bottom oil and/or the supernatant of the column bottom oil using the hydrocracker.