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:
Feb. 19, 2008
Filed:
Apr. 01, 2004
Emanuel Freire Sandes, Niterói, BR;
Paulo Sérgio Freire, Rio de Janeiro, BR;
José Geraldo Furtado Ramos, Rio de Janeiro, BR;
Aurélio Medina Dubois, Rio de Janeiro, BR;
José Mozart Fusco, Niterói, BR;
Eduardo Cardoso DE Melo Guerra, Petrópolis, BR;
Wilson Kenzo Huziwara, Rio de Janeiro, BR;
Emanuel Freire Sandes, Niterói, BR;
Paulo Sérgio Freire, Rio de Janeiro, BR;
José Geraldo Furtado Ramos, Rio de Janeiro, BR;
Aurélio Medina Dubois, Rio de Janeiro, BR;
José Mozart Fusco, Niterói, BR;
Eduardo Cardoso de Melo Guerra, Petrópolis, BR;
Wilson Kenzo Huziwara, Rio de Janeiro, BR;
Petroleo Brasileiro S.A. - Petrobras, Rio De Janeiro, BR;
Abstract
An improved cyclone system for disengaging solid and gaseous particles in fluid catalytic cracking (FCC) processes with reduced coke formation in disengager vessels, without favoring release of the disengaged catalyst into cyclones in subsequent stages, said system comprising legless cyclonesfitted with external collector pipes, is described. The collector pipesoptimize the purge of gases coming from the disengager vessel, reducing the time the hydrocarbons remain inside said disengager vessel, thus preventing overcracking and subsequent coke formation. Positioning of the external collector pipesprevents release of the disengaged catalyst into cyclones in subsequent stages. The present invention also relates to a process and device for disengaging solid and gaseous particles in fluid catalytic cracking (FCC) processes, reducing coke formation in disengager vessels and minimizing the release of catalyst into consecutive stages, said process and device being part of the system of the present invention.