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| Number | Title | Issue Date |
| 6441264 | Method for separating benzothiophene compounds from hydrocarbon mixture containing them, and hydrocarbon mixture obtained by said method A method for separating at least a benzothiophene compound from a hydrocarbon mixture is disclosed. The method includes contacting the mixture of a fraction obtained therefrom with a reagent including an acceptor complexing agent π, to obtain a donor-acc... | 08/27/2002 |
| 6277271 | Process for the desulfurization of a hydrocarbonaceoous oil A process for the desulfurization of hydrocarbonaceous oil wherein the hydrocarbonaceous oil and a recycle stream containing sulfur-oxidated compounds is contacted with a hydrodesulfurization catalyst in a hydrodesulfurization reaction zone to reduce the ... | 08/21/2001 |
| 6171478 | Process for the desulfurization of a hydrocarbonaceous oil A process for the desulfurization of hydrocarbonaceous oil wherein the hydrocarbonaceous oil is contacted with a hydrodesulfurization catalyst in a hydrodesulfurization reaction zone to reduce the sulfur level to a relatively low level and then contacting... | 01/09/2001 |
| 5753102 | Process for recovering organic sulfur compounds from fuel oil The present invention provides a process and equipment for efficiently and economically recovering organic sulfur compounds in a fuel oil while maintaining the original chemical structures thereof. The fuel oil is admixed with a solvent low in solubility ... | 05/19/1998 |
| 5689033 | Process for removal of impurities from light paraffin isomerization feedstocks A process is directed to the removal of impurities such as sulfur compounds, oxygenates, and/or olefins from a light paraffin hydrocarbon feedstock such as a C4 -C6 fraction, which may be used subsequently in an isomerization process... | 11/18/1997 |
| 5346614 | Removal of hydrogen sulfide from an oil-containing mixture having a continuous aqueous phase A method and system for removing hydrogen sulfide from a continuous aqueous phase-containing fluid without forming a sulfur sludge. Oil is either initially present in the fluid or added thereto.... | 09/13/1994 |
| 4948494 | Removal of hydrogen sulfide from produced fluids Hydrogen sulfide is removed from a water-in-oil emulsion by treatment of the emulsion with sulfur dioxide to convert the hydrogen sulfide to elemental sulfur. The elemental sulfur formed is distributed between the oil phase and the aqueous phase of the em... | 08/14/1990 |
| 4201662 | Process for converting sulfur in hydrocarbon to water soluble form A desulfurization process wherein a sulfur-containing hydrocarbon material is contacted with a sulfur oxide compound and an amine, a salt of an amine, or mixtures thereof. The contacting converts the sulfur component of the hydrocarbon material to water s... | 05/06/1980 |
| 4171349 | Desulfurization process and installation for hydrocarbon reservoir fluids produced by wells Hydrogen sulfide is removed from a three-phase mixture of crude oil, natural gas, and water as it issues as a stream from an oil well by first adding liquid sulfur dioxide to the stream without substantially changing its temperature or pressure and then t... | 10/16/1979 |
| 4035287 | Desulfurization of residual oil A method is provided for desulfurization of oil stock, e.g. residual oil, having a minimum sulfur content of about 2 weight percent and a minimum metals content of about 50 ppm to produce a low-sulfur, high-metals content raffinate and a high-sulfur, low-... | 07/12/1977 |
