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:
Nov. 27, 2012
Filed:
Aug. 04, 2009
Raymond Francis Drnevich, Clarence Center, NY (US);
Vasilis Papavassiliou, Williamsville, NY (US);
Troy M. Raybold, Colden, NY (US);
Perry Raymond Pacouloute, Amherst, NY (US);
Raymond Francis Drnevich, Clarence Center, NY (US);
Vasilis Papavassiliou, Williamsville, NY (US);
Troy M. Raybold, Colden, NY (US);
Perry Raymond Pacouloute, Amherst, NY (US);
Praxair Technology, Inc., Danbury, CT (US);
Abstract
A method and apparatus for producing a treated hydrocarbon containing stream for use as a feed to a hydrogen plant having a steam methane reformer in which an untreated hydrocarbon containing stream is introduced into two reaction stages connected in series to hydrogenate olefins and to convert organic sulfur species to hydrogen sulfide. The second of the two stages can also be operated in a pre-reforming mode to generate additional hydrogen through introduction of the oxygen and steam into such stage. A sulfur tolerant catalyst is used in both stages to promote hydrogenation and oxidation reactions. Sulfur is removed between stages by adsorption of the hydrogen sulfide to prevent deactivation of the catalyst in the second of the stages that would otherwise occur during operation of the second reaction stage in a pre-reforming mode of operation.