Title:
直接還元鉄の製造方法及び装置
Document Type and Number:
Japanese Patent JP2012522889
Kind Code:
A
Abstract:
“A method for producing direct reduced iron in a vertical reactor having an upper reducing zone and a lower cooling zone, the method including: feeding iron oxide feed material to an upper portion of the vertical reactor, the iron oxide feed material forming a burden flowing by gravity to a material outlet portion in a lower portion of the vertical reactor; feeding hot reducing gas to a lower portion of the reducing zone of the vertical reactor, the hot reducing gas flowing in a counter flow to the burden towards a gas outlet port in the upper portion of the vertical reactor; recovering direct reduced iron at the lower portion of the vertical reactor; recovering top gas at the upper portion of the vertical reactor; submitting at least a portion of the recovered top gas to a recycling process; and feeding the recycled top gas back into the vertical reactor, where the recycling process includes heating the recovered top gas in a preheating unit before feeding it to a reformer unit; feeding volatile carbon containing material to the reformer unit and allowing the volatile carbon containing material to devolatise and to react with the recovered top gas; feeding desulfurizing agent into the recovered top gas in or upstream of the reformer unit; heating the reformer unit; and feeding the reformed top gas recovered from the reformer unit through a particle separation device for removal of sulfur containing material.”
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Inventors:
Ross, Jean-Look
Rodriguez, Davit
Rodriguez, Davit
Application Number:
JP2012502709A
Publication Date:
September 27, 2012
Filing Date:
April 06, 2010
Export Citation:
Assignee:
PAUL WURTH S.A.
International Classes:
C21B13/02; B01D53/14; B01J20/04; F27D17/00
Domestic Patent References:
| JP2001520310A | 2001-10-30 | |||
| JPS63111112A | 1988-05-16 | |||
| JPS61261411A | 1986-11-19 | |||
| JPS5776114A | 1982-05-13 | |||
| JPS5362718A | 1978-06-05 | |||
| JP2001526318A | 2001-12-18 | |||
| JP2007009069A | 2007-01-18 | |||
| JPS62228872A | 1987-10-07 | |||
| JPH0440217A | 1992-02-10 |
Foreign References:
| US3749386A | 1973-07-31 |
Attorney, Agent or Firm:
Yoshiaki Sato