Method for producing reduced iron and reducing gas for blast furnace charge, method for using reduced iron, and method for using reducing gas

摘要

The invention provides a method where carbonaceous resources such as coal are gasified so as to produce a reducing gas, and reduced iron, hydrogen and electric power are simultaneously produced with high efficiency using the reducing gas.In the efficient application method of carbonaceous resources, a sulfur component-containing carbonaceous raw material 15 (such as coal) is partially burned withoxygen 16 to produce a reducing gas 11; the reducing gas 11 and iron ore 2 are brought into contact in a solid reducing furnace 4 to reduce the iron ore, so that sulfur component-containing solid reduced iron 3 is produced; and further, the desulfurized reducing gas 11 is produced. The sulfur component included in the reducing gas 11 is moved to the reduced iron 3 in the solid reducing furnace 4,sothat the desulfurized reducing gas 11 is obtained. The sulfur-containing solid reduced iron 3 is charged to a blast furnace. The desulfurized reducing gas 11 is utilized for gaseous hydrogen producti on and/or combined power generation.