Process for the fluid catalytic cracking of heavy feedstocks

Details Process for the fluid catalytic cracking of heavy feedstocks Process for the fluid catalytic cracking of heavy feedstocks

1997-09-18

2000-05-09

Griffin, Walter D.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208153, 208157, 208159, 208160, 208163, 208164, C10G 1100

Patent

active

060599588

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.

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