Patent ID: 9404047
Filing Date: 2016-08-02
CPC Classification: C10G

Claim Text:
1. A start-up method of a hydrocarbon synthesis reaction apparatus, wherein the reaction apparatus is provided with a reactor in which a hydrocarbon is synthesized by a Fischer-Tropsch synthesis reaction of a synthesis gas, whose main components are hydrogen and carbon monoxide, with a slurry including a suspension of catalyst particles, and a cooling device including a vertical heat exchanger tube in contact with the slurry used to remove heat generated by the hydrocarbon synthesis reaction, the start-up method comprising: an initial slurry-loading step in which the slurry is loaded into the reactor at the initial stage of the Fischer-Tropsch synthesis reaction at a lower loading rate than that applied to the reactor in a steady-state operation; and a CO conversion ratio-increasing step in which the liquid level of the slurry in the reactor is raised by adding to the slurry the hydrocarbons synthesized at the early stage of the Fischer-Tropsch synthesis reaction so that the CO conversion ratio is increased in proportion to a rise in the liquid level of the slurry in the reactor.