Synthesis reaction system of a hydrocarbon compound, and the method of removing the powdered particles

The synthesis reaction system includes a synthesis gas mainly composed of hydrogen and carbon monoxide, and the reactor which synthesizes a hydrocarbon compound by a chemical reaction with slurry comprising suspended solid catalyst particles in a liquid; the separator and for separating the hydrocarbon compound from the slurry; comprises; the hydrocarbon compound extracted from the separator is filtered, and the filter for capturing the powdered catalyst particles.