METHOD FOR PRODUCING HYDROCARBON OIL

摘要

A method for producing a hydrocarbon oil is provided in which the amount of a fine powder of a catalyst for the Fischer-Tropsch (FT) synthesis reaction to flow into an upgrading reaction system can be quantitatively monitored with high precision, and the occurrence of problems in the reaction system can be predicted. In the method for producing a hydrocarbon oil according to the present invention, the hydrocarbon oil obtained by the FT synthesis reaction using a catalyst within a slurry bed reactor C2 is fractionated into a distilled oil and a column bottom oil in a rectifying column C4, part of the column bottom oil is flowed into a first transfer line L 12 that connects a column bottom of the rectifying column C4 to a hydrocracker C6, at least part of the column bottom oil is flowed into a second transfer line L14 branched from the first transfer line L12 and connected to the first transfer line L12 downstream of the branching point, the amount of the catalyst fine powder to be captured is monitored while the catalyst fine powder in the column bottom oil that flows in the second transfer line L 14 are captured by a detachable filter 2 provided in the second transfer line L 14, and the column bottom oil is hydrocracked within the hydrocracker C6.