Method of coal gasification and direct ironmaking and system therefor

A system of coal gasification and direct ironmaking attains both heat recovery in a coal-based direct ironmaking process and a reduction in equipment investment in a coal gasification process. A waste heat boiler in the system recovers heat of gas exhausted from a coal gasification furnace. A heater...

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Bibliographic Details
Main Authors MOTOYUKI MASAHIRO, TATEISHI MASATAKA
Format Patent
LanguageEnglish
Published 08.10.2013
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
PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLEGASES CONTAINING CARBON MONOXIDE
TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Summary:A system of coal gasification and direct ironmaking attains both heat recovery in a coal-based direct ironmaking process and a reduction in equipment investment in a coal gasification process. A waste heat boiler in the system recovers heat of gas exhausted from a coal gasification furnace. A heater in exhaust gas lines of a heat reduction furnace in the coal-based direct ironmaking process superheats the steam generated by and exhausted from the waste heat boiler. A superheated steam line supplies the steam superheated by the heater as an oxidant to the coal gasification furnace.
Bibliography:Application Number: US200913120942