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. 25, 2025
Filed:
Nov. 18, 2022
Petróleo Brasileiro S.a.—petrobras, Rio de Janeiro, BR;
Universidade Estatual DE Maringá, Maringá, BR;
Pedro Augusto Arroyo, Maringá, BR;
Fernando Gusman Brandao, Rio de Janeiro, BR;
Jailton Ferreira Do Nascimento, Rio de Janeiro, BR;
Leonardo Hadlich De Oliveira, Maringá, BR;
Artur Lemes Moretti, Maringá, BR;
Petróleo Brasileiro S.A.—Petrobras, Rio de Janeiro, BR;
Universidade Estatual de Maringá, Maringá, BR;
Abstract
The present invention addresses to the use of NaY zeolite with a Si/Al ratio>2.6 as a solid adsorbent in the process of removing HS from natural gas through a PSA process. The described adsorbent has the capacity of removing HS from natural gas from offshore exploration platforms, enabling in situ regeneration. The experimental development proved the high capacity of capturing HS by the NaY zeolite in consecutive cycles of pressurization, adsorption, depressurization and purging. This capture capacity remains at 74.2% of the initial capacity, remaining stable in subsequent cycles. The structure of the material maintained crystallinity above 95% in use, in 15 consecutive cycles, allowing the reuse of the adsorbent for a prolonged period of operation, preventing the solid from being constantly changed, which is quite common in a non-regenerative process.