C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/246
C10G 47/00 (2006.01) C10G 47/22 (2006.01) C10G 65/04 (2006.01) C10G 65/12 (2006.01)
Patent
CA 1176591
Metal 1003/JFW ABSTRACT OF THE DISCLOSURE A process for the processing of asphalt-containing heavy hydrocarbon oil feedstocks containing distillable fractions and residue is disclosed to obtain metal and asphaltene-free pro- ducts for use in the production of fuels and/or precursors for petrochemical products, while converting the residue nor- mally contained in such oil feedstocks to distillable products. The oil feedstock which can be alternatively pretreated by vacuum distillation to obtain a residue together with a donor solvent is fed to a donor solvent hydrovishreaker followed by catalytic hydrotreatment of one or more distillate fractions obtained therefrom in a fixed bed reactor. In accordance with the invention, residue obtained from distillation of the donor solvent visbreaker effluent and donor solvent oil obtained from the hydrotreater are recycled to the donor solvent hydrovis- breaking, the naphthene content of the donor solvent oil being as high or higher than that of the distillable fractions of the feedstock, the proportion of donor solvent oil to the recycled hydrovisbreaker residue being selected so that the effective naphthene content of the combined feed is higher than that in the oil feedstock and the naphthene to residue concentration ratio in the mixed feed is the same or higher than its original value in the feedstock.
378761
Eisenlohr Karl-Heinz
Puxbaumer Hans
Simo Thomas
Metallgesellschaft Aktiengesellschaft
Robic Robic & Associes/associates
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