Process for conversion of a hydrocarbon stream
First Claim
1. A process for upgrading a hydrocarbon mixture, withdrawn as a direct stream from a crude distillation unit and having an initial boiling point below 200°
- C., and a fraction of at least 5 mass % boiling above 500°
C., comprising the steps ofa. directing said hydrocarbon mixture to a vacuum flasher unit,b. withdrawing a heavy bottoms fraction from said vacuum flasher unit,c. withdrawing an overhead fraction for hydrocracking from said vacuum flasher unit,d. directing said overhead fraction for hydrocracking and a stream rich in hydrogen to a reaction step to contact a material catalytically active in hydrocracking, ande. withdrawing a hydrocracked stream of hydrocarbon from said hydrocracker.
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Accused Products
Abstract
In a broad aspect the present disclosure relates to a process plant and a process for upgrading a hydrocarbon mixture, withdrawn as a direct stream from a crude distillation unit and an initial boiling point below 200° C., and a fraction of at least 5% boiling above 500° C., 550° C. or 650° C. comprising the steps of a. directing said hydrocarbon mixture to a vacuum flasher unit, b. withdrawing a heavy hydrocarbon fraction from said vacuum flasher unit, c. withdrawing a light hydrocarbon mixture for hydrocrackingfrom said vacuum flasher unit, d. directing said light hydrocarbon mixture for hydrocracking and a stream rich in hydrogen to con-tact a material catalytically active in hydrocracking, e. withdrawing a hydrocracked stream of hydrocarbon from said hydrocracker. with the associated benefit of limiting the amount of asphaltenes, metals and other heavy components contacting said material catalytically active in hydrocracking.
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Citations
14 Claims
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1. A process for upgrading a hydrocarbon mixture, withdrawn as a direct stream from a crude distillation unit and having an initial boiling point below 200°
- C., and a fraction of at least 5 mass % boiling above 500°
C., comprising the steps ofa. directing said hydrocarbon mixture to a vacuum flasher unit, b. withdrawing a heavy bottoms fraction from said vacuum flasher unit, c. withdrawing an overhead fraction for hydrocracking from said vacuum flasher unit, d. directing said overhead fraction for hydrocracking and a stream rich in hydrogen to a reaction step to contact a material catalytically active in hydrocracking, and e. withdrawing a hydrocracked stream of hydrocarbon from said hydrocracker. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14)
- C., and a fraction of at least 5 mass % boiling above 500°
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13. A process plant comprising a crude oil distillation column having an inlet, multiple distillation outlets, an overflash outlet and an overflash inlet, a vacuum flash unit having an inlet, a gas outlet, an overhead fraction outlet and a residual bottoms outlet and a hydrocracking reactor having an inlet and an outlet, and containing a material catalytically active in hydrocracking,
said process plant being configured for directing a crude oil to the inlet of the distillation column, for said overflash outlet being in fluid communication with the inlet of the vacuum flash unit, the overhead fraction outlet of said vacuum flash unit being in fluid communication with the inlet of the hydrocracking reactor, the inlet of said hydrocracking reactor being further in fluid communication with a hydrogen source and the outlet of said hydrocracking reactor being configured for withdrawal of a stream boiling in the diesel range optionally for further processing.
Specification