Method for manufacturing molten irons by injecting a hydrocarbon gas and apparatus for manufacturing molten irons using the same

• Main Authors: BAE JINAN, CHOI EUNG-SOO, LEE WOON-JAE
• Format: Patent
• Language: Chinese; English
• Published: 17.11.2010
• Subjects: BLASTING; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; FURNACES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; KILNS; LIGHTING; MANUFACTURE OF IRON OR STEEL; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; OVENS; RETORTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

The present invention relates to a method for manufacturing molten iron by injecting a hydrocarbon gas and an apparatus for manufacturing molten iron using the same. A method for manufacturing molten iron according to an embodiment of the present invention includes: i) converting iron ore into reduced materials while passing the iron ore through a reduction reactor, ii) charging lumped carbonaceous materials into a melter-gasifier connected to the reduction reactor and forming a coal-packed bed in the melter-gasifier, iii) charging the reduced materials into the melter-gasifier connected to the reduction reactor, injecting oxygen, vapor, and hydrocarbon gas together into a lower portion of the coal-packed bed and manufacturing molten iron, and iv) supplying a reducing gas discharged from the melter-gasifier to the reduction reactor. The vapor is injected to prevent the oxygen and the hydrocarbon gas from contacting each other in the manufacturing of molten iron.