Class 208/219 - With acids

Subclass of Class 208 - Mineral oils: processes and products
Definition: Processes wherein sulfur is removed from mineral oil by
No. of patents: 34
Last issue date: 08/23/2011

Number	Title	Issue Date
8002971	Desulfurization process and systems utilizing hydrodynamic cavitation Processes and systems associated with hydrodynamic cavitation-catalyzed oxidation of sulfur-containing substances in a fluid are described. In one example method, carbonaceous fluid is combined with at least one oxidant to form a mixture and then the mixture is flow...	08/23/2011
7892418	Process for producing low sulfur and high cetane number petroleum fuel The present invention relates to a process for reducing sulfur content in petroleum fuel, such as diesel fuel, and raising the Cetane Number to a value above 50. ...	02/22/2011
7276152	Oxidative desulfurization and denitrogenation of petroleum oils A robust, non-aqueous, and oil-soluble organic peroxide oxidant is employed for oxidative desulfurization and denitrogenation of hydrocarbon feedstocks including petroleum fuels. Even at low concentrations, the non-aqueous organic peroxide oxidant is extremely activ...	10/02/2007
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
7179368	Method for desulfurizing thiophene derivatives contained in fuels The invention concerns a method for selectively desulphurizing thiopene compounds contained in hydrocarbons derived from crude oil distillation, whether refined or not, which consists in oxidising the thiophene sulphur atoms into sulphone in the presence of an oxidi...	02/20/2007
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
7019188	Use of ionic liquids to separate olefins, diolefins and aromatics The present invention relates to the separation of olefins, diolefins and lower aromatics from mixed streams of hydrocarbons using ionic liquids in the absence of metal compounds. The present invention eliminates the metal complexes conventionally used in such separ...	03/28/2006
6875341	Process for enhancing the value of hydrocabonaceous natural recources 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 ...	04/05/2005
6849774	Separation of dienes from olefins using ionic liquids Methods for separating di-olefins from mono-olefins, and olefins from non-olefins such as paraffins, oxygenates and aromatics; are provided. The methods use metal salts which complex both mono-olefins and di-olefins, but which selectively complex di-olefins in the p...	02/01/2005
6827845	Preparation of components for refinery blending of 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...	12/07/2004
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
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
6339182	Separation of olefins from paraffins using ionic liquid solutions Methods for separating olefins from non-olefins, such as parafins, including cycloparaffins, oxygenates and aromatics, are provided. The methods use metal salts to complex olefins, allowing the non-olefins to be separated by a variety of methods, includin...	01/15/2002
6274785	Method of desulfurization of hydrocarbons A method for the removal of sulfur and nitrogen containing compounds from petroleum distillates. Sulfur- and nitrogen-containing compounds are oxidized using a selective oxidant to create compounds that can be preferentially extracted from a petroleum dis...	08/14/2001
6231755	Desulfurization of petroleum products The invention discloses a process for the desulfurization of petroleum products by contacting with acidic organic polymers. Preferably, highly fluorinated and, most preferably, perfluorinated acidic organic polymers are used....	05/15/2001
6160193	Method of desulfurization of hydrocarbons A method for the removal of sulfur and nitrogen containing compounds from petroleum distillates. Sulfur- and nitrogen-containing compounds are oxidized using a selective oxidant to create compounds that can be preferentially extracted from a petroleum dis...	12/12/2000
5968812	Removal of sulfinic acids The invention relates to the unexpected discovery that the removal of the sulfinate group from an organosulfinate compound can be improved in the presence of an effective amount of a Lewis acid. The invention includes a method of removing the sulfinic aci...	10/19/1999
5858212	Desulfurization and hydrocarbon quality enhancement process A hydrocarbon stream containing sulfur and sulfur compounds is contacted with a water suspension of dolomitic lime and dibasic acid catalyst in a reaction vessel in order to transfer the sulfur and sulfur compounds from the petroleum vapor to the water ph...	01/12/1999
5770047	Process for producing reformulated gasoline by reducing sulfur, nitrogen and olefin A process for upgrading a nitrogen and sulfur rich heavy naphtha feedstock includes the steps of providing a naphtha feedstock having an initial nitrogen content, an initial sulfur content and an initial octane number; contacting the naphtha feedstock wit...	06/23/1998
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
5087350	Process for recovering metals and for removing sulfur from materials containing them by means of an oxidative extraction A process for removing S and Fe and to reclaim V, Ni and Co from coal or oil and their derivatives or from minerals. The process is based upon an oxidative extraction performed with hypochlorous acid (HClO) whose oxidizing power is generated and regulated...	02/11/1992
5034118	Non-oxidative removal of hydrogen sulfide from gaseous, petrochemical, and other streams Hydrogen sulfide can be conveniently removed from streams containing up to about 1,000 ppm of H2 S by reacting the latter with an olefin using a bed of an acidic solid catalyst in a non-oxidative process for the removal of hydrogen sulfide. The...	07/23/1991
5017280	Process for recovering metals and for removing sulfur from materials containing them by means of an oxidative extraction A process for removing S and Fe and to reclaim V, Ni and Co from coal or oil and their derivatives or from minerals. The process is based upon an oxidative extraction performed with hypochlorous acid (HC10) whose oxidizing power is generated and regulated...	05/21/1991
4895640	Method for removing impurities and residual moisture from petroleum fuels A method for removing impurities and residual moisture from a petroleum fuel comprising: (a) circulating said fuel through a first filter apparatus made up of a cellulosic material containing a solid organic acid and a chromate compound; and (b) circulati...	01/23/1990
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
4211639	Method for removing impurities and residual moisture from petroleum fuels Residual moisture and sulfur and other residual reducing agent impurities contained in automotive fuels and fuel oils are removed by adding to the fuel a chromate compound or a solid acid and circulating the fuel through a filter system comprising at leas...	07/08/1980
4168225	Method for removing sulfur impurities from petroleum liquids A method for removing sulfur impurities from petroleum liquids comprising adding to the petroleum liquid a fatty acid, naphthalene, water and a cellulosic container containing a cellulosic material coated with a chromate compound....	09/18/1979

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Class 208/219 - With acids