Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1993-09-13
1994-12-20
Pal, Asok
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208 48R, 208 48AA, C10G 4722, C10G 912
Patent
active
053743482
ABSTRACT:
A heavy hydrocarbon oil, a substantial portion of which boils above 524.degree. C., is subjected to hydrocracking with a fractionated heavy oil recycle stream containing active additive particles. In the process, a slurry feed of (1) fresh heavy hydrocarbon oil feedstock and a heavy hydrocarbon recycle and (2) from about 0.01-4% by weight (based on fresh feedstock) of iron sulphate additive particles having sizes less than 45 .mu.m, is passed upwardly through a confined vertical hydrocracking zone. A mixed effluent is removed from the top of the hydrocracking zone, which is then passed through a hot separator vessel. From the bottom of the separator is withdrawn a liquid heavy hydrocarbon stream comprising heavy hydrocarbons and particles of the iron sulphate additive converted mainly to an iron sulphide phase. This separated liquid heavy hydrocarbon stream is fractionated to obtain a heavy oil which boils above 450.degree. C., containing the additive particles. The fractionated heavy oil containing the additive particles is then recycled to and mixing with the hydrocracking zone feed slurry in an amount up to 40% by weight of the combined feed slurry.
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Dawson William H.
de Bruijn Theo J. W.
Jain Anil K.
Pruden Barry B.
Sears Paul L.
Energy Mines & Resources - Canada
Pal Asok
Yildirim Bekir L.
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