PURPOSE: To refine a heavy slurry oil fraction at good efficiency by dispersing catalyst fines in a feed oil, passing the mixture through a hydrovisbreaker to lower the viscosity, separating the effluent into higher and lower boiling fractions and passing the respective fractions into a cracking unit so as to convert them into lower-molecular-weight oil products.
CONSTITUTION: In a process for converting an oil containing heavy hydrocarbons, a feed stock containing cracking catalyst fines is passed through a hydrovisbreaker 24 to lower the viscosity of the feed oil, the hydrovisbreaker effluent is separated into at least one low-boiling fraction and a high-boiling fraction in a separator 30 to incorporate the high-boiling fraction in the dispersed cracking catalyst fines. Next, the at least one low-boiling fraction is discharged as a product stream from the separator 30 and passed to a cracking unit 36 to convert it into lower molecular weight hydrocarbon product oil, and the higher boiling fraction containing the dispersed cracking catalyst fines is passed into a catalytic cracking unit 44 to convert the higher boiling fraction into lower molecular weight hydrocarbon products. Thus, a heavy slurry oil fraction is refined by cracking.
JIERARUDO ARAN HOUERU
EDOWAADO ROORENSU SUGURIYUU ZA
KERII JIYOOJI NOTSUPU
| JPS6053593A | 1985-03-27 | |||
| JPS55165993A | 1980-12-24 | |||
| JPS62256888A | 1987-11-09 |
| US3691058A | 1972-09-12 |
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