An oxidative treatment process, e.g., oxidative desulfurization or denitrification, is provided in which the oxidant is produced in-situ using an aromatic-rich portion of the original liquid hydrocarbon feedstock. The process reduces or replaces the need for the separate introduction of liquid oxidants such as hydrogen peroxide, organic peroxide and organic hydroperoxide in an oxidative treatment process.

This disclosure relates to a method of managing a sulphur-containing species from a sour liquid, the method comprising: providing a sour liquid comprising sulphur-containing species; introducing a halogen-based catalyst to the sour liquid, the halogen-based catalyst being complexed with a second species; introducing an oxidant to the sour liquid; and reacting the sulphur-containing species, the halogen-based catalyst and the oxidant. The second species may be an ethoxylate or propoxylate species. The disclosure also relates to a composition comprising a sour liquid, a hydrogen-based catalyst complexed with a second species, and an oxidant, a use of a halogen-based catalyst that is complexed with a second species for the treatment of a sulphur-containing species in a sour liquid, and a composition containing a halogen-based catalyst that is complexed with a second species in a suitable carrier for use in the treatment of a sulphur-containing species in a sour liquid.

This disclosure relates to a method of managing a sulphur-containing species from a sour liquid, the method comprising: providing a sour liquid comprising sulphur-containing species; introducing a halogen-based catalyst to the sour liquid, the halogen-based catalyst being complexed with a second species; introducing an oxidant to the sour liquid; and reacting the sulphur-containing species, the halogen-based catalyst and the oxidant. The second species may be an ethoxylate or propoxylate species. The disclosure also relates to a composition comprising a sour liquid, a hydrogen-based catalyst complexed with a second species, and an oxidant, a use of a halogen-based catalyst that is complexed with a second species for the treatment of a sulphur-containing species in a sour liquid, and a composition containing a halogen-based catalyst that is complexed with a second species in a suitable carrier for use in the treatment of a sulphur-containing species in a sour liquid.

An oxidative treatment process, e.g., oxidative desulfurization or denitrification, is provided in which the oxidant is produced in-situ using an aromatic-rich portion of the original liquid hydrocarbon feedstock. The process reduces or replaces the need for the separate introduction of liquid oxidants such as hydrogen peroxide, organic peroxide and organic hydroperoxide in an oxidative treatment process.

An oxidative treatment process, e.g., oxidative desulfurization or denitrification, is provided in which the oxidant is produced in-situ using an aromatic-rich portion of the original liquid hydrocarbon feedstock. The process reduces or replaces the need for the separate introduction of liquid oxidants such as hydrogen peroxide, organic peroxide and organic hydroperoxide in an oxidative treatment process.

The present application refers to an ultrasonic oxidative desulfurization method for gasoline or diesel, comprising: Step 1, mixing an oxidant solution with an organic acid catalyst solution to obtain a mixture solution, wherein the oxidant reacts with the organic acid catalyst to obtain a peroxy acid; Step 2, mixing the mixture solution with gasoline or diesel and heating to 50 to 70 C., and performing an ultrasonic oxidative reaction under ultrasonic waves at 15 to 25 kHz to obtain a pre-prepared oil; wherein a mass flow ratio of the oxidant solution, the organic acid catalyst solution and the gasoline or diesel is (0.03-0.08):(0.01-0.03):1; Step 3, performing a phase separation process to the pre-prepared oil; and Step 4, recycling the organic acid catalyst and performing a countercurrent extraction for the gasoline or diesel to obtain a desulfurized gasoline or diesel.

The present application refers to an ultrasonic oxidative desulfurization method for gasoline or diesel, comprising: Step 1, mixing an oxidant solution with an organic acid catalyst solution to obtain a mixture solution, wherein the oxidant reacts with the organic acid catalyst to obtain a peroxy acid; Step 2, mixing the mixture solution with gasoline or diesel and heating to 50 to 70 C., and performing an ultrasonic oxidative reaction under ultrasonic waves at 15 to 25 kHz to obtain a pre-prepared oil; wherein a mass flow ratio of the oxidant solution, the organic acid catalyst solution and the gasoline or diesel is (0.03-0.08):(0.01-0.03):1; Step 3, performing a phase separation process to the pre-prepared oil; and Step 4, recycling the organic acid catalyst and performing a countercurrent extraction for the gasoline or diesel to obtain a desulfurized gasoline or diesel.

An oxidizing composition for removing hydrogen sulfide (H.sub.2S) from a gaseous or liquid stream includes mixture products of water, sodium hypochlorite, a chelating agent, and a transition metal compound. The chelating agent can be etidronic acid; the transition metal compound can be an iron (III) compound, such as ferric sulfate. The oxidizing composition is formed by (i) combining water, chelating agent, and transition metal compound to form an activator composition and (ii) mixing the activator composition with a sodium hypochlorite solution to adjust the pH, such as for a particular use. Some embodiments include various apparatuses and methods for treating different treatment sites with the oxidizing compositions disclosed herein. Examples of suitable treatment sites include, without limitation, natural gas pipelines, bubble towers, oil wells, gas wells, sewer wet wells, air scrubbers, saltwater disposal pipelines, and saltwater disposal wells.

Embodiments provide a method and apparatus for upgrading a hydrocarbon feedstock. According to at least one embodiment, the method includes the steps of (a) supplying a hydrocarbon feedstock to an oxidation reactor, wherein the hydrocarbon feedstock is oxidized in the presence of a catalyst under conditions sufficient to selectively oxidize sulfur and nitrogen compounds present in the hydrocarbon feedstock; (b) separating the hydrocarbons and the oxidized sulfur and nitrogen compounds by solvent extraction; (c) collecting a first residue stream that includes the oxidized sulfur and oxidized nitrogen compounds; (d) supplying the first residue stream to a deasphalting unit; (e) supplying the hydrocarbons to an adsorption column to produce a high purity hydrocarbon product and a second residue stream; and (f) supplying spent adsorbent to the deasphalting unit to remove additional contaminants from the high purity hydrocarbon product in the deasphalting unit.

Embodiments provide a method and apparatus for upgrading a hydrocarbon feedstock. According to at least one embodiment, the method includes (a) supplying a hydrocarbon feedstock to an oxidation reactor, where the hydrocarbon feedstock is oxidized in the presence of a catalyst under conditions sufficient to selectively oxidize sulfur compounds present in the hydrocarbon feedstock; (b) separating the hydrocarbons and the oxidized sulfur compounds by solvent extraction; (c) collecting a residue stream that includes the oxidized sulfur compounds; (d) supplying the residue stream to a coker to produce coker gases and solid coke; and (e) recycling at least a portion of the volatile component stream to the oxidation reactor to selectively oxidize sulfur compounds in the volatile component stream, the recycled portion of the volatile component stream comprising at least one of light coker gas oils and heavy coker gas oils.