Method for producing hydrocarbon oil and system for producing hydrocarbon oil

摘要

To provide a method for producing a hydrocarbon oil capable of accurately and quantitatively monitoring inflow of fine powder of a Fischer-Tropsch (FT) synthesis reaction catalyst into an upgrading reaction system and of predicting problems in the reaction system. This method for producing a hydrocarbon oil fractionates a hydrocarbon oil obtained by a FT synthesis reaction using a catalyst in a slurry bed reactor (C2) into a distillate oil and a bottom oil in a rectifying column (C4), circulates a part of the bottom oil through a first transfer line (L12) which connects the bottom of the rectifying column (C4) and a hydrocracker (C6), circulates at least a part of the bottom oil through a second transfer line (L14) which branches from the first transfer line (L12) and connects to the first transfer line (L12) at a downstream branch point, collects catalyst fine powder in the bottom oil that flows through the second transfer line (L14) with a removable filter (2) installed in the second transfer line (L14) and monitors the collected amount, and hydrocracks the bottom oil in the hydrocracker (C6).