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.

Date of Patent:
Mar. 27, 2012

Filed:

Sep. 22, 2011
Applicants:

Raymond Francis Drnevich, Clarence Center, NY (US);

Joseph Michael Schwartz, Williamsville, NY (US);

Minish Mahendra Shah, East Amherst, NY (US);

Dante Patrick Bonaquist, Grand Island, NY (US);

Inventors:

Raymond Francis Drnevich, Clarence Center, NY (US);

Joseph Michael Schwartz, Williamsville, NY (US);

Minish Mahendra Shah, East Amherst, NY (US);

Dante Patrick Bonaquist, Grand Island, NY (US);

Assignee:

Praxair Technology, Inc., Danbury, CT (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21B 7/00 (2006.01); C21C 5/40 (2006.01);
U.S. Cl.
CPC ...
Abstract

Offgas containing carbon dioxide and carbon monoxide that is produced in the reduction of ores and other metal oxides in a reactor is treated to reduce its carbon dioxide content and is then contacted with metal oxide to reduce the oxidation state of the metal and oxidize carbon monoxide therein to carbon dioxide, following which the reduced metal is oxidized with steam to produce hydrogen that can be fed to the reactor.


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