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| Number | Title | Issue Date |
| 7252756 | Preparation of components for refinery blending of transportation fuels A process is disclosed for the production of refinery transportation fuel or components for refinery blending of transportation fuels having a reduced amount of sulfur and/or nitrogen-containing impurities. The process involves contacting a hydrocarbon feedstock con... | 08/07/2007 |
| 7192565 | Method of collecting mercaptans contained in a gaseous feed The gaseous feed flowing in through line 1 is contacted in contacting zone ZA with a liquid solvent flowing in through line 2. The solvent comprises between 0.001% and 100% by weight of a liquid olefin. Contacting in zone ZA is carried out in the prese... | 03/20/2007 |
| 7175755 | Process for the extractive oxidation of contaminants from raw hydrocarbon streams A process for the extractive oxidation of contaminants from raw hydrocarbon streams rich in heteroatomic polar compounds is described, the said process involving the extractive oxidation of sulfur and nitrogen compounds from said streams, the said process comprising... | 02/13/2007 |
| 7153414 | Process for the upgrading of raw hydrocarbon streams A process for the upgrading of raw hydrocarbon streams rich in heteroatomic polar compounds and/or unsaturated moieties involving the extractive oxidation of sulfur, nitrogen, conjugated dienes and other unsaturated compounds from said streams, the said process comp... | 12/26/2006 |
| 7081196 | Treatment of crude oil fractions, fossil fuels, and products thereof with sonic energy In crude oil fractions, fossil fuels, and organic liquids in general in which it is desirable to reduce the levels of sulfur-containing and nitrogen-containing components, the process reduces the level of these compounds via the application of sonic energy. The proc... | 07/25/2006 |
| 7074324 | Process to remove sulfur contaminants from hydrocarbon streams A process for removing sulfur compounds from hydrocarbon streams by contacting the hydrocarbon stream, especially a gasoline stream, with an adsorbent material. The adsorbent material is regenerated with hydrogen or a hydrogen/H2S mixture. ... | 07/11/2006 |
| 7014668 | Motor fuel for diesel, gas-turbine and turbojet engines The invention relates to a motor fuel suitable for diesel, gas-turbine and jet engines and standard engines, comprising a mixture of organic compounds having oxygen-containing functional groups, and optionally a hydrocarbon fraction. The fuel is typically a stable h... | 03/21/2006 |
| 6881325 | Preparation of components for transportation fuels Economical processes are disclosed for the production of components for refinery blending of transportation fuels by selective oxidation of feedstocks comprising a mixture of hydrocarbons, sulfur-containing and nitrogen-containing organic compounds. Oxidation feedst... | 04/19/2005 |
| 6843906 | Integrated hydrotreating process for the dual production of FCC treated feed and an ultra low sulfur diesel stream An integrated hydrotreating process which produces a high quality feed for the FCC to maintain sulfur in FCC gasoline to a level lower than 30 ppm from a high boiling feedstock and an ultra low sulfur diesel stream preferably less than 10 ppm from a cracked stock di... | 01/18/2005 |
| 6673230 | Process for oxygenation of components for refinery blending of transportation fuels Economical processes are disclosed for production of components for refinery blending of transportation fuels which are liquid at ambient conditions by selective oxygenation of refinery feedstocks comprising a mixture of organic compounds. The organic com... | 01/06/2004 |
| 6638419 | Method for obtaining oil products with low sulphur content by desulfurization of extracts A method for obtaining oil products such as diesel fuel with improved quality, from a gas oil fraction containing organosulphur compounds such as dibenzenethiophenes and/or their derivatives, with initial and final boiling points generally ranging between... | 10/28/2003 |
| 6596914 | Method of desulfurization and dearomatization of petroleum liquids by oxidation and solvent extraction A multi-step process for desulfurizing liquid petroleum fuels that also removes nitrogen-containing compounds and aromatics. The process steps are: thiophene extraction; thiophene oxidation; thiophene-oxide and -dioxide extraction; raffinate solvent recov... | 07/22/2003 |
| 6544409 | Process for the catalytic oxidation of sulfur, nitrogen and unsaturated compounds from hydrocarbon streams A process for the catalytic oxidation of sulfur and nitrogen contaminants as well as unsaturated compounds present in a hydrocarbon fossil oil medium is described, the process comprising effecting the oxidation in the presence of at least one peroxide, at... | 04/08/2003 |
| 6416658 | Process for simultaneous hydrotreating and splitting of naphtha streams A process for concurrently fractionating and hydrotreating of a full range naphtha stream. The full boiling range naphtha stream is subjected to simultaneous hydrodesulfurization and splitting into a light boiling range naphtha and a heavy boiling range n... | 07/09/2002 |
| 6406616 | Process for removing low amounts of organic sulfur from hydrocarbon fuels A process for desulfurizing hydrocarbons such as gasoline and similar petroleum products to reduce the sulfur content to a range of from about 2 to 15 ppm sulfur without affecting the octane rating is described. The sulfur containing hydrocarbon is contac... | 06/18/2002 |
| 6402940 | Process for removing low amounts of organic sulfur from hydrocarbon fuels A process for desulfurizing fuels such as diesel oil and similar petroleum products to reduce the sulfur content to a range of from about 2 to 15 ppm sulfur is described. The sulfur containing fuel is contacted at slightly elevated temperatures with an ox... | 06/11/2002 |
| 5980732 | Integrated vacuum residue hydrotreating with carbon rejection The residue (bottoms) from a vacuum or atmospheric column is upgraded in a revamped multireactor hydrotreating zone. The hydrotreating zone is modified such that the entire effluent of the next to last reactor is withdrawn, light gases and hydrocarbons ar... | 11/09/1999 |
| 5968347 | Multi-step hydrodesulfurization process A hydrotreatment process for effecting hydrotreatment of a liquid hydrocarbon feedstock containing a mixture of liquid hydrocarbons together with organic sulphurous impurities in which a desulphurised liquid first hydrocarbon fraction is contacted with a ... | 10/19/1999 |
| 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 |
| 5310479 | Process for reducing the sulfur content of a crude A process for reducing the aliphatic sulfur content of a crude oil in a production site is disclosed. A crude oil with a high aliphatic sulfur content is treated at ambient reaction temperature with an oxidant which comprises formic acid and hydrogen pero... | 05/10/1994 |
| 5258117 | Means for and methods of removing heavy bottoms from an effluent of a high temperature flash drum A process for improving the performance of heavy oil refining units in a resid hydrotreating unit equipped for resid hydrotreating. The partially refined resid stream issuing from a train of ebullated bed reactor is first separated into high, medium, and ... | 11/02/1993 |
| 5242578 | Means for and methods of deasphalting low sulfur and hydrotreated resids A refining process uses a two or four stage solvent separator coupled to receive an incoming feedstream of low sulfur resid and a solvent. In the preferred two stage separator, the mixture at the top of the first separator stage is fed to the second stage... | 09/07/1993 |
| 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 |
| 4746420 | Process for upgrading diesel oils A process for upgrading diesel oil comprising the steps of: (1) reacting the diesel oil with a nitrogenous treating agent; (2) contacting the diesel oil from step (1) above with (a) a primary solvent selected from the group consisting of organic solvents having a d... | 05/24/1988 |
| 4711713 | Process for enhancing the cetane number and color of diesel fuel A process for enhancement of the cetane number of a diesel fuel which in one embodiment comprises: (1) treating a diesel oil with a nitrogenous treating agent in a nitrogen amount, equivalent on a 100% nitric acid basis, to about 10 weight percent or less... | 12/08/1987 |
| 4643820 | Process for enhancing the cetane number of diesel fuel A process for enhancement of the cetane number of a diesel fuel which in one embodiment comprises: (1) treating a diesel oil with a nitrogenous treating agent in a nitrogen amount, equivalent on a 100% nitric acid basis, to about 10 weight percent or less... | 02/17/1987 |
| 4465589 | Removal of contaminants from organic compositions Metals, nitrogen and/or sulfur, particularly vanadium, nickel and nitrogen, are removed from organic compositions, particularly heavy hydrocarbon oils, by contacting the organic composition with a methylating agent, preferably dimethyl sulfate, under cond... | 08/14/1984 |
