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. 28, 2023
Filed:
Apr. 20, 2022
Applicant:
Petróleo Brasileiro S.a.—petrobras, Rio de Janeiro, BR;
Inventor:
Roberto Carlos Pontes Bittencourt, Rio de Janeiro, BR;
Assignee:
Petróleo Brasileiro S.A.—Petrobras, Rio de Janeiro, BR;
Primary Examiner:
Int. Cl.
CPC ...
B01J 38/62 (2006.01); B01J 23/755 (2006.01); B01J 38/52 (2006.01);
U.S. Cl.
CPC ...
B01J 38/62 (2013.01); B01J 23/755 (2013.01); B01J 38/52 (2013.01);
Abstract
The present invention addresses to a method of maintaining the activity of pre-reform catalysts in hydrogen production units, in order to avoid deactivation by oxidation or coke deposition of pre-reform catalysts in the absence of hydrogen in the feed consisting of hydrocarbon and water vapor.