Petroleo Brasileiro S.a. - Petrobras

Maria Celia Da Rocha

Emanuel Freire Sandes

Jorivaldo Medeiros

Jose Geraldo Ramos

Moacir Jose Bampi

Francisco Carlos Barros

Claudio Fonseca Santos

Ingrid Alexandra Zech

Monica Einsfeldt

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.

Process for the fluid catalytic cracking of heavy feedstocks

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Rio de Janeiro, Brazil

Maria Celia Da Rocha