Invention Grant
US08685136B2 System and method for reducing iron oxide to metallic iron using coke oven gas and oxygen steelmaking furnace gas
有权
使用焦炉煤气和氧气炼钢炉气体将铁氧化物还原为金属铁的系统和方法
- Patent Title: System and method for reducing iron oxide to metallic iron using coke oven gas and oxygen steelmaking furnace gas
- Patent Title (中): 使用焦炉煤气和氧气炼钢炉气体将铁氧化物还原为金属铁的系统和方法
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Application No.: US13363044Application Date: 2012-01-31
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Publication No.: US08685136B2Publication Date: 2014-04-01
- Inventor: Gary E. Metius , James M. McClelland, Jr. , David C. Meissner
- Applicant: Gary E. Metius , James M. McClelland, Jr. , David C. Meissner
- Applicant Address: US NC Charlotte
- Assignee: Midrex Technologies, Inc.
- Current Assignee: Midrex Technologies, Inc.
- Current Assignee Address: US NC Charlotte
- Agency: Clements Bernard PLLC
- Agent Christopher L. Bernard; Lawrence A. Baratta, Jr.
- Main IPC: C21B9/14
- IPC: C21B9/14 ; C21B15/02
Abstract:
A process for reducing iron oxide to metallic iron using coke oven gas (COG), including: a direct reduction shaft furnace for providing off gas; a COG source for injecting COG into a reducing gas stream including at least a portion of the off gas; and the direct reduction shaft furnace reducing iron oxide to metallic iron using the reducing gas stream and injected COG. The COG has a temperature of about 1,200 degrees C. or greater upon injection. The COG has a CH4 content of between about 2% and about 13%. Preferably, the COG is reformed COG. Optionally, the COG is fresh hot COG. The COG source includes a partial oxidation system. Optionally, the COG source includes a hot oxygen burner.
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