| 摘要 |
<p>A method for producing a hydrocarbon oil is provided in which a flow of the catalyst fine powder derived from the catalyst for the FT synthesis reaction into the reaction system in the upgrading step of the FT synthetic oil can be suppressed. In the method for producing a hydrocarbon oil according to the present invention, a hydrocarbon oil containing a catalyst fine powder derived from a catalyst is obtained by the Fischer-Tropsch synthesis reaction using a slurry bed reactor C2 holding a slurry of a liquid hydrocarbon in which the catalyst is suspended within the slurry bed reactor; the hydrocarbon oil is fractionated into a distilled oil and a column bottom oil containing the catalyst fine powder by a rectifying column C4; at least part of the column bottom oil is transferred to a storage tank T2, and the catalyst fine powder is sedimented to the bottom of the storage tank T2 to capture the catalyst fine powder; a residue of the column bottom oil is transferred from the rectifying column C4 to a hydrocracker C6, and/or the supernatant of the column bottom oil from which the catalyst fine powder is captured by the storage tank T2 is transferred from the storage tank T2 to the hydrocracker C6; and using the hydrocracker C6, the residue of the column bottom oil and/or the supernatant of the column bottom oil is hydrocracked.</p> |
