| 摘要 |
PURPOSE:To purify a fuel gas containing CO, H, dienes, olefins and O- and S-compounds without causing carbonaceous deposition by subjecting the fuel gas to hydrogenation and CO conversion, followed by heat recovery and removal of both steam and S-compounds. CONSTITUTION:Steam is added to a fuel gas containing CO, H, dienes, olefins and O- and S-compounds. The mixture is preheated at 100-250 deg.C by heat recovered from steam and/or a process gas, and hydrogenation is carried out for hydrogenating the dienes, olefins and O-compounds. Then, CO conversion is carried out by converting the CO in the hydrogenated fuel gas into CO2 and H. After recovery of heat of the fuel gas thus treated, the gas is further cooled to removed steam. Then, removal of the S-compounds gives a purified fuel gas. |
