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Title:
METHOD FOR REDUCING IRON OXIDE TO METALLIC IRON USING COKE OVEN GAS
Document Type and Number:
WIPO Patent Application WO/2016/048709
Kind Code:
A3
Abstract:
The present invention provides a method for reducing iron oxide to metallic iron using coke oven gas, including: dividing coke oven gas from a coke oven gas source into a plurality of coke oven gas streams; providing a first coke oven gas stream to a hydrogen enrichment unit to form a hydrogen-rich product stream that is delivered to a reduction shaft furnace as part of a reducing gas stream; and providing a tail gas stream from the hydrogen enrichment unit to a reforming reactor to form a reformed gas stream that is delivered to a reduction shaft furnace as part of the reducing gas stream. Optionally, a spent top gas stream from the reduction shaft furnace is cleansed of CO2 and recycled back to the reducing gas stream.

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Inventors:
MOTAMEDHASHEMI MIRMOHAMMADYOUSEF (US)
Application Number:
PCT/US2015/050107
Publication Date:
August 11, 2016
Filing Date:
September 15, 2015
Export Citation:
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Assignee:
MIDREX TECHNOLOGIES INC (US)
International Classes:
C22B5/12; C21B11/02; C21B13/02; C21B13/14
Domestic Patent References:
WO2013093640A22013-06-27
Foreign References:
US20140083252A12014-03-27
US20120125159A12012-05-24
US20040226406A12004-11-18
US0470581A1892-03-08
Other References:
AMETEK: "Process Heaters, Furnaces and Fired Heaters", 2014, Retrieved from the Internet [retrieved on 20151111]
Attorney, Agent or Firm:
BERNARD, Christopher, L. (1901 Roxborough Road Suite 25, Charlotte NC, US)
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