Method of coal gasification and direct ironmaking and system therefor

• Main Authors: MOTOYUKI MASAHIRO, TATEISHI MASATAKA
• Format: Patent
• Language: Chinese; English
• Published: 27.07.2011
• Subjects: CARBURETTING AIR OR OTHER GASES; CHEMISTRY; FUELS; LUBRICANTS; MANUFACTURE OF IRON OR STEEL; METALLURGY; METALLURGY OF IRON; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROMSOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; TECHNICAL GASES CONTAINING CARBON MONOXIDE

The present invention provides a method of coal gasification and direct ironmaking, and a system therefor. The system for coal gasification and direct ironmaking which is effective in attaining both heat recovery in a coal-based direct ironmaking process and a reduction in equipment investment in a coal gasification process. The system is characterized by being equipped with: a waste-heat boiler (16) which recovers the heat of a gas discharged from a coal gasification furnace; a heater (7) disposed in lines (1a and 1b) for a gas discharged from a heating/reducing furnace (1) used in the coal-based direct ironmaking process, the heater (7) superheating the steam generated by and discharged from the waste-heat boiler (16); and a superheated-steam line (23) which supplies, as an oxidizing agent, the superheated steam obtained with the heater (7) to the coal gasification furnace (10).