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:
May. 09, 2000
Filed:
Sep. 18, 1997
Jose Geraldo Ramos, Rio de Janeiro, BR;
Jose Mozart Fusco, Niteroi, BR;
Moacir Jose Bampi, Porto Alegre, BR;
Emanuel Freire Sandes, Niiteroi, BR;
Francisco Carlos Barros, Nova Igua.cedilla.u, BR;
Jorivaldo Medeiros, Rio de Janeiro, BR;
Claudio Fonseca Santos, Rio de Janeiro, BR;
Aurelio Medina Dubois, Rio de Janeiro, BR;
Ingrid Alexandra Zech, Rio de Janeiro, BR;
Monica Einsfeldt, Petropolis, BR;
Maria Celia Da Rocha, Rio de Janeiro, BR;
Petroleo Brasileiro S.A.-Petrobras, Rio de Janeiro, BR;
Abstract
A process for the fluid catalytic cracking of heavy feeds under a heat balance regime is described, where one or more catalyst coolers external to the regenerator cool a stream of regenerated catalyst. A portion of said stream returns to the regenerator and a portion of the cooled regenerated catalyst is admixed to the non-cooled regenerated catalyst at a temperature substantially lower than the regenerator temperature, said admixture being brought into contact with the hydrocarbon feed to be cracked. As a result, the control of the catalyst circulation is rendered independent from the heat balance of the unit, with minimization of the thermal cracking, and therefore lower coke and fuel gas products.