Title:
DIRECT-REDUCED IRON PRODUCTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2013/073662
Kind Code:
A1
Abstract:
This direct-reduced iron production system is provided with: a direct reduction furnace (13) that uses a high-temperature reduced gas (11) containing hydrogen and carbon monoxide to directly reduce iron ore (12a) to reduced iron (12b); an acid gas removal apparatus (16) comprising an acid gas component absorption tower (16a) that removes acid gas components (CO2 and H2S) in a reduction furnace exhaust gas (14) discharged from the direct reduction furnace (13) using an absorbing liquid (15) such as an amine-based solvent, and a regeneration tower (16b) that releases acid gas; and a degradation product removal device (17) that separates and removes degradation products in the absorbing liquid (15) that is recycled by the absorption tower (16a) and the regeneration tower (16b).
Inventors:
SAKAGUCHI MASAKAZU
HIRAYAMA HARUAKI
SUSAKI MAKOTO
ISHIDA KAZUO
HIRAYAMA HARUAKI
SUSAKI MAKOTO
ISHIDA KAZUO
Application Number:
PCT/JP2012/079765
Publication Date:
May 23, 2013
Filing Date:
November 16, 2012
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
C21B13/00; B01D53/14; B01D53/52; B01D53/62; B01D53/77; F27D17/00
Domestic Patent References:
| WO2011012964A2 | 2011-02-03 | |||
| WO2010042023A1 | 2010-04-15 |
Foreign References:
| JP2011136258A | 2011-07-14 | |||
| JP2001019416A | 2001-01-23 | |||
| JPS59169920A | 1984-09-26 | |||
| US5110350A | 1992-05-05 | |||
| JP2011104580A | 2011-06-02 |
Attorney, Agent or Firm:
SAKAI, Hiroaki et al. (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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Claims: