| 摘要 |
<p>PURPOSE:To obtain an H2-enriched combustible gas by blowing gaseous hydrocarbons and O2 in the amt. sufficient to convert the hydrocarbons into H2 and CO into a melting and gasifying furnace and simultaneously blowing steam into the furnace to specify the gas temp. at the furnace outlet. CONSTITUTION:Reduced iron is charged into a melting and gasifying furnace 1 from a duct 9, and coal and coke are added from a feed port 5. O2 is blown in from a gas blowing port 11 to partially oxidize the generated gas, hence a combustible gas consisting essentially of CO and H2 is obtained, and the reduced iron is melted and reduced. The gaseous hydrocarbons, e.g. natural gas, shown by the formula CmHn (n/m=2.5) is introduced from a duct 12 and O2 is introduced from a duct 13 in the amt. sufficient to convert the gas into H2 and CO. Steam is introduced from a duct 14 to control the gas temp. to 900-1100 deg.C at the furnace outlet. The H2-enriched combustible gas is blown into a prereducing furnace 3 through a cyclone 2 to reduce the iron ore from a feed port 20, then discharged from a duct 21 and used as a crude raw gas for methanol synthesis.</p> |
