The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 2015
Filed:
Jun. 23, 2011
Applicants:
Masaki Iijima, Tokyo, JP;
Haruhito Watanabe, Tokyo, JP;
Inventors:
Masaki Iijima, Tokyo, JP;
Haruhito Watanabe, Tokyo, JP;
Assignee:
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22B 1/00 (2006.01); C21C 5/40 (2006.01); C21B 5/06 (2006.01); F27B 1/00 (2006.01); F27D 17/00 (2006.01);
U.S. Cl.
CPC ...
C21B 5/06 (2013.01); F27B 1/005 (2013.01); F27D 17/004 (2013.01); C21B 2100/02 (2013.01); C21C 2100/02 (2013.01);
Abstract
An apparatus for producing a reducing gas for direct reduction iron-making includes an internal-heating type reformer for reforming a natural gas by adding steam and oxygen to the natural gas and by partially burning the natural gas to generate reducing gas containing hydrogen and carbon monoxide; a remover for removing carbon dioxide from exhaust gas generated in the direct reduction iron-making; and a line for recycling as the reducing gas the exhaust gas from which the carbon dioxide is removed by the remover.