Title:
COAL GASIFICATION DIRECT REDUCTION PROCESS
Document Type and Number:
Japanese Patent JP3939492
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a coal gasification direct reduction process by which the remaining heat of reducing furnace top gas (exhaust gas from an iron ore reducing furnace) and/or coal gasification furnace gas (synthesis gas produced by gasifying coal in a coal gasification furnace) can effectively be utilized and thermal efficiency can be improved.
SOLUTION: The coal gasification direct reduction process has a step of forming the coal gasification furnace gas and a step of reducing iron ore in the iron ore reducing furnace by utilizing reducing gas in the coal gasification furnace gas. The process characteristically has a coal-moisture-controlling step where coal is subjected to moisture control by utilizing the reducing furnace top gas as a heat source and/or a step where the coal gasification furnace gas is subjected to pressure reduction by means of a power recovery device, and the synthesis gas whose pressure is reduced using the device is supplied into the above iron ore reducing furnace.
Inventors:
Takuo Shigehisa
Jinichi Tomuro
Eiichiro Makino
Jinichi Tomuro
Eiichiro Makino
Application Number:
JP2000340461A
Publication Date:
July 04, 2007
Filing Date:
November 08, 2000
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
Babcock Hitachi Ltd.
Babcock Hitachi Ltd.
International Classes:
C10J3/02; C21B13/02; C10J3/46; C21B13/00; F27D17/00; (IPC1-7): C21B13/02; C10J3/02; C10J3/46; //F27D17/00
Domestic Patent References:
| JP11140521A | ||||
| JP63047311A |
Attorney, Agent or Firm:
Yoshiyuki Kaji
Akeda Kaoru
Akeda Kaoru