Process for the fluid catalytic cracking of a hydrocarbon...

Details Process for the fluid catalytic cracking of a hydrocarbon... Process for the fluid catalytic cracking of a hydrocarbon...

C - Chemistry, Metallurgy

10

G

196/106

C10G 11/14 (2006.01) C10G 11/18 (2006.01)

Patent

CA 1183793

A B S T R A C T PROCESS FOR THE FLUID CATALYTIC CRACKING OF A HYDROCARBON FEEDSTOCK A process for the fluid catalytic cracking of a hydrocarbon feedstock in a reactor system comprising an endothermic cracking zone (6, 7) and an exothermic regeneration zone (13), wherein heat is exchanged between said zones not only by the circulation of catalyst (5, 6, 11), but also by passing the fresh feedstock (1) through heat exchange coils (16) in the regeneration zone (13.) before contacting hot regenerated catalyst in a liftpot (4) and entering the reaction zone (6, 7). The temperature in the regeneration zone is thus kept below 725°C, whereas the feedstock is preheated to at least 200°C, preferably to 325-400°C. Heavy and high metal-containing feedstocks may be processed in this way. Fig. 1

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