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:
Aug. 31, 2010
Filed:
Apr. 06, 2005
Rafael Menegassi DE Almeida, Rio de Janeiro, BR;
Jefferson Roberto Gomes, Rio de Janeiro, BR;
Marcelo Edral Pacheco, Rio de Janeiro, BR;
Marcus Vinicius Eiffle Duarte, Rio de Janeiro, BR;
Rogerio Oddone, Rio de Janeiro, BR;
Giane Ribeiro Stuart, Rio de Janeiro, BR;
Rafael Menegassi De Almeida, Rio de Janeiro, BR;
Jefferson Roberto Gomes, Rio de Janeiro, BR;
Marcelo Edral Pacheco, Rio de Janeiro, BR;
Marcus Vinicius Eiffle Duarte, Rio de Janeiro, BR;
Rogerio Oddone, Rio de Janeiro, BR;
Giane Ribeiro Stuart, Rio de Janeiro, BR;
Petroleo Brasileiro S.A. - Petrobras, Rio de Janeiro, BR;
Abstract
A process for the selective hydrodesulfurization of a naphtha containing olefins and organosulfur compounds is disclosed, which minimizes the hydrogenation of the olefins and results in a product with a low sulfur content. The process involves a two-stage hydrodesulfurization with HS removed from the first stage effluent. A flow of hydrogen and at least one added non-reactive compound is fed into the first stage, wherein the Hmolar fraction ranges from 0.2 to 1.0, and with HS at the reactor intake limited to a maximum of 0.1% by volume. The second stage involves a feedstream of hydrogen and at least one added non-reactive compound, wherein the Hmolar fraction ranges from 0.2 to 0.7 and with HS at the reactor intake limited to a maximum of 0.05% by volume.