Hydrocracking of heavy hydrocarbon oils with conversion facilita

Details Hydrocracking of heavy hydrocarbon oils with conversion facilita Hydrocracking of heavy hydrocarbon oils with conversion facilita

1998-03-06

1999-12-21

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208107, 208 48R, 208 48AA, 208100, C10G 4707

Patent

active

060044535

ABSTRACT:
A process for hydrocracking a heavy hydrocarbon oil feedstock, a substantial portion of which boils above 524.degree. C. is described which includes the steps of: (a) passing a slurry feed of a mixture of heavy hydrocarbon oil feedstock and from about 0.01-4.0% by weight (based on fresh feedstock) of coke-inhibiting additive particles upwardly through a confined vertical hydrocracking zone, the hydrocracking zone being maintained at a temperature between about 350.degree. and 600.degree. C. a pressure of at least 3.5 MPa and a space velocity of up to 4 volumes of hydrocarbon oil per hour per volume of hydrocracking zone capacity, (b) removing from the top of the hydrocracking zone a mixed effluent containing a gaseous phase comprising hydrogen and vaporous hydrocarbons and a liquid phase comprising heavy hydrocarbons, (c) passing the mixed effluent into a hot separator vessel, (d) withdrawing from the top of the separator a gaseous stream comprising hydrogen and vaporous hydrocarbons, (e) withdrawing from the bottom of the separator a liquid stream comprising heavy hydrocarbons and particles of the coke-inhibiting additive, and (f) fractionating the separated liquid stream to obtain a heavy hydrocarbon stream which boils above 450.degree. C. said heavy hydrocarbon stream containing said additive particles, and a light oil product. According to the novel feature, at least part of the fractionated heavy hydrocarbon stream boiling above 450.degree. C. is recycled to form part of the heavy hydrocarbon oil feedstock at a lower polarity aromatic oil is added to the heavy hydrocarbon oil feedstock such that a high ratio of lower polarity aromatics to asphaltenes is maintained during hydroprocessing. This provides excellent yields without coke formation.

REFERENCES:
patent: 3412010 (1968-11-01), Alpert et al.
patent: 3681231 (1972-08-01), Alpert et al.
patent: 3775286 (1973-11-01), Mukherjee et al.
patent: 4214977 (1980-07-01), Ranganathan et al.
patent: 4299685 (1981-11-01), Khulbe et al.
patent: 4853337 (1989-08-01), Dickakian
patent: 4897176 (1990-01-01), Dickakian
patent: 4969988 (1990-11-01), Jain et al.
patent: 5120427 (1992-06-01), Stine et al.
patent: 5190633 (1993-03-01), Fetzer et al.
patent: 5328591 (1994-07-01), Raterman
patent: 5374348 (1994-12-01), Sears et al.
patent: 5755955 (1998-05-01), Benham et al.

Affiliated with

Also associated with

Rating

Hydrocracking of heavy hydrocarbon oils with conversion facilita does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydrocracking of heavy hydrocarbon oils with conversion facilita, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrocracking of heavy hydrocarbon oils with conversion facilita will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-501657