METHOD OF COAL GASIFICATION AND DIRECT IRONMAKING AND SYSTEM THEREFOR

摘要

A system of coal gasification and direct ironmaking which is effective inattaining both heat recovery in a coal-based direct ironmaking process and areduction in equipment investment in a coal gasification process.The system is characterized by being equipped with: a waste heat boiler(16) for recovering heat of gas exhausted from a coal gasification furnace; aheater (7) provided in exhaust gas lines (1a and 1b) of a heat reductionfurnace (1) in the coal-based direct ironmaking process and superheating thesteam generated by and exhausted from the waste heat boiler (16); and asuperheated steam line (23) for supplying the steam superheated by theheater (7) as an oxidant to the coal gasification furnace (10).