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:
Mar. 24, 2009
Filed:
Jun. 13, 2003
Darryl Pollica, Medford, MA (US);
William F. Northrop, Ann Arbor, MI (US);
Chunming (Frank C.) Qi, Lexington, MA (US);
Mark R. Hagan, New Haven, CT (US);
Alexis Smith, Berkeley, CA (US);
Lawrence Clawson, Dover, MA (US);
Darryl Pollica, Medford, MA (US);
William F. Northrop, Ann Arbor, MI (US);
Chunming (Frank C.) Qi, Lexington, MA (US);
Mark R. Hagan, New Haven, CT (US);
Alexis Smith, Berkeley, CA (US);
Lawrence Clawson, Dover, MA (US);
Nuvera Fuel Cells, Inc., Billerica, MA (US);
Abstract
According to the present invention, a temperature profile within a preferential oxidation reactor is controlled using a two phase water/steam system to provide a temperature range within the reactor () which favors the selective oxidation of CO in a hydrogen rich reformate stream. The reformate is flowed in a mixture with oxygen over a preferential oxidation catalyst (). The temperature profile is controlled by flowing a stream of water proximate to the preferential oxidation catalyst () so as the stream of water and the reformate stream passing over the catalyst () are in a heat transfer arrangement. The stream of water is maintained as a two phase stream from a point at which the water reaches its boiling temperature to a point proximate an outlet from which the stream of water exits the reactor ().