Process of converting non-distillable residues of mixed-base or

Details Process of converting non-distillable residues of mixed-base or Process of converting non-distillable residues of mixed-base or

1983-01-27

1985-02-19

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 57, 208 59, C10G 6506, C10G 6508, C10G 6512

Patent

active

045004153

ABSTRACT:
A process is disclosed for converting a non-distillable residue of a mixed-base or paraffin-base crude hydrocarbon oil to a distillable precursor for motor fuels and/or petrochemical products which comprises donor solvent hydrovisbreaking said residue in a hydrovisbreaking zone in the presence of a circulated hydrogen donor solvent at a temperature in the range of 380.degree. to 480.degree. C. and at a pressure in the range of 40 to 200 bars said circulated hydrogen donor solvent having been produced in said process by distilling the product from said hydrovisbreaking to separate the hydrogenated liquid hydrocarbons into a plurality of fractions, withdrawing a branch stream and subjecting said branch stream to a catalytic treatment in the presence of molecular hydrogen, whereby aromatic compounds in said branch stream are converted by a selective catalytic hydrogenation to naphthenic compounds and paraffins are converted by a selective catalytic cracking to naphtha fractions which boil below the boiling range of hydrogen donor solvent.

REFERENCES:
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patent: 3755141 (1973-08-01), Youngblood et al.
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patent: 4304657 (1981-12-01), Miller
patent: 4309276 (1982-01-01), Miller
patent: 4363716 (1982-12-01), Greene et al.
Olson et al., J. Catalysis 61, 1980, 390-396.

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