Manufacturing device for hydrocarbons and manufacturing method for hydrocarbons

摘要

This manufacturing device for hydrocarbons is provided with a gas-liquid separation device that cools hydrocarbons in gaseous form extracted from the gaseous phase section of a Fischer-Tropsch synthesis reaction vessel, causes some of the hydrocarbons to liquefy, and separates gas and liquid. Between a line downstream from a final-stage gas-liquid separation unit of the gas-liquid separation device and an upstream line upstream from the final-stage gas-liquid separation unit of the gas-liquid separation device, a light liquid hydrocarbon supply line that supplies light hydrocarbons is provided. This downstream line is a downstream light liquid hydrocarbon line through which flow light hydrocarbons with a cloud point lower than the outlet temperature of a cooling vessel in the final-stage gas-liquid separation unit.