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AssigneeJames W. Bunger and Associates, Inc.
InventorsJames W. Bunger, Donald E. Cogswell
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A process for upgrading hydrocarbonaceous oil containing heteroatom-containing compounds where the hydrocarbonaceous oil is contacted with a solvent system that is a mixture of a major portion of a polar solvent having a dipole moment greater than about 1 debye and a minor portion of water to selectively separate the constituents of the carbonaceous oil into a heteroatom-depleted raffinate fraction and heteroatom-enriched extract fraction. The polar solvent and the water-in-solvent system are formulated at a ratio where the water is an antisolvent in an amount to inhibit solubility of heteroatom-containing compounds and the polar solvent in the raffinate, and to inhibit solubility of non-heteroatom-containing compounds in the extract. The ratio of the hydrocarbonaceous oil to the solvent system is such that a coefficient of separation is at least 50%. The coefficient of separation is the mole percent of heteroatom-containing compounds from the carbonaceous oil that are recovered in the extract fraction minus the mole percent of non-heteroatom-containing compounds from the carbonaceous oil that are recovered in the extract fraction. The solvent-free extract and the raffinate concentrates may be used directly or processed to make valuable petroleum, chemical or industrial products.
A process for upgrading hydrocarbonaceous oil comprised of heteroatom-containing compounds and non-heteroatom-containing compounds comprising:
A process for upgrading hydrocarbonaceous oil containing heteroatom-containing compounds for use as a feed for a petroleum refining, the process comprising, extracting heteroatom-containing compounds into an extract fraction to produce a raffinate fraction depleted of the heteroatom-containing compounds by use of a solvent and water mixture in a ratio to achieve an antisolvent effect and a coefficient-of-separation of heteroatom-containing compounds greater than 65%, where the coefficient of separation is the mole percent of heteroatom-containing compounds from the carbonaceous oil that are recovered in the extract fraction minus the mole percent of non-heteroatom-containing compounds from the carbonaceous oil that are recovered in the extract fraction.
A process for extraction of selected heteroatom-containing compounds from hydrocarbonaceous oil for use in commodity, specialty or industrial applications, the process comprising contacting the hydrocarbonaceous oil with a mixture of polar solvent and water to selectively recover heteroatom-containing compounds into an extract fraction that contains low concentrations of non-heteroatom-containing compounds by use of a solvent and water mixture in a ratio to achieve a coefficient-of-separation of heteroatom-containing compounds that is greater than 65%,
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