Invention Grant
- Patent Title: Method and device for operating a smelting reduction process
- Patent Title (中): 冶炼还原工艺的运行方法和装置
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Application No.: US14465375Application Date: 2014-08-21
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Publication No.: US09574247B2Publication Date: 2017-02-21
- Inventor: Robert Millner , Johannes Leopold Schenk , Kurt Wieder
- Applicant: SIEMENS VAI METALS TECHNOLOGIES GMBH
- Applicant Address: AT
- Assignee: PRIMETALS TECHNOLOGIES AUSTRIA GMBH
- Current Assignee: PRIMETALS TECHNOLOGIES AUSTRIA GMBH
- Current Assignee Address: AT
- Agency: Ostrolenk Faber LLP
- Priority: AT1658/2008 20081023
- Main IPC: C21B5/00
- IPC: C21B5/00 ; C21B5/06 ; C21B7/00 ; C21B13/00 ; F02C6/00 ; F27B1/26 ; F27D17/00

Abstract:
In a method and a device for operating a smelting reduction process, at least part of an export gas from a blast furnace or a reduction unit is thermally utilized in a gas turbine and the exhaust gas of this gas turbine is used in a waste heat steam generator to generate steam. The remaining part of the export gas is fed to a CO2 separation apparatus, the tail gas thereby obtained being fed to a waste heat steam generator and burned for additional steam generation. The combustible components of the tail gas are sent for thermal utilization in a steam generator, so that the overall energy balance of the thermal use of the export gas is improved. In addition, a further part of the export gas is qualitatively improved by the CO2 separation apparatus, so as to generate a high-quality reduction gas which can be supplied for metallurgical use.
Public/Granted literature
- US20140361472A1 METHOD AND DEVICE FOR OPERATING A SMELTING REDUCTION PROCESS Public/Granted day:2014-12-11
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