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US 4,544,479 AGranted
Recovery of metal values from petroleum residua and other fractions
AssigneeMobil Oil Corporation
InventorTsoung-Yuan Yan
Life of this patent
Estimating the term…
Abstract
Visbreaking of heavy metals containing oil with 5 to 30, preferably 15 to 25 wt % pulverized coal gives good demetallation of oil and produces a solids product with a high metals content suitable for use as a synthetic, metal bearing ore.
Claims18
A process for heavy hydrocarbon oil demetallation and metals recovery which comprises:
- (a) heating an admixture of 70 to 95 wt % heavy hydrocarbon oil containing at least one metal selected from the group consisting of vanadium and nickel and 5 to 30 wt % particulate coal under visbreaking conditions to produce a visbroken liquid with a reduced metals content containing solids;
- and
- (b) recovering from the visbroken liquid an oil fraction with reduced metal content and a solids fraction containing at least about 30% of the metal in said heavy hydrocarbon oil.
A process for demetallation of heavy hydrocarbon oil containing at least 50 ppm of metals selected from the group comprising vanadium and nickel, which process comprises
- (a) heating an admixture of 75 to 85 wt % of said oil and 15 to 25 wt % particulate coal in a visbreaking reactor under visbreaking conditions which include a temperature of 800.degree. to 950.degree. F. and a weight hourly space velocity of about 1 to 100, and wherein said temperature and space velocity are sufficient to substantially reduce the viscosity of said oil while preventing coking of said feed to produce a visbroken liquid with a reduced viscosity and a reduced metals content but containing coal solids;
- (b) recovering from said visbroken liquid an oil fraction with a reduced metals content and a solids fraction containing at least about 30 percent of the metal in said oil feed, and wherein at least a majority of the metals removed from said oil are recovered on said solids;
- (c) oxidizing said solids fraction to form a metal rich synthetic ore.
Dependencies are inferred from the claim text.