摘要 |
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.
|
申请人 |
PETROLEO BRASILEIRO S.A.-PETROBRAS |
发明人 |
RAMOS, JOSEGERALDO FURTADO;FUSCO, JOSEMOZART;BAMPI, MOACIR JOSE;SANDES, EMANUEL FREIRE;BARROS, FRANCISCO CARLOS DA COSTA;MEDEIROS, JORIVALDO;SANTOS, CLAUDIO FONSECA MACHADO DOS;DUBOIS, AURELIO MEDINA;ZECH, INGRID ALEXANDRA;EINSFELDT, MONICA;DA ROCHA, MARIA CELIA DOS SANTOS |