The reforming is highly endothermic, and the reforming section can account for over 50% of energy consumption in the overall GTL process. A high temperature is required for the reforming reaction. Thus, the reformer outflow has an extremely high temperature and needs to be cooled before the FT process. We built three heat exchangers to gradually cool down the reformer outflow, while the recycled heat is used to pre-heat the mixed stream to the gas form (>100 ℃), an intermediate temperature for pre-reformer (~ 500 ℃) and a high temperature for reformer (700 ~ 1000 ℃).