| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 208236000 | With nitrogen containing treating reagent | 25 |
| 20080257785 | SORBENT COMPOSITIONS AND DESULFURIZATION METHOD USING THE SAME - The disclosed sorbents are for adsorbing sulfur compounds, particularly sulfur-containing aromatic compounds, from liquid hydrocarbon fuels such as gasoline, cracked gasoline, diesel, high sulfur liquid fossil fuels, ultra-low sulfur fuel (ULSF) in fuel cell applications, and mixtures thereof. The sorbent compositions comprise one or more silicates having one or more metal nitrates admixed together. The one or more metal nitrates include iron (II) or (III), zinc (II), cadmium (II) and mercury (II) nitrate. The method of preparing and using the sorbents is also provided. | 10-23-2008 |
| 20090038992 | PROCESS FOR THE REMOVAL OF SULPHUR COMPOUNDS AND CARBON DIOXIDE FROM A GAS STREAM - A process for the removal of sulphur compounds and carbon dioxide from a gas stream comprising sulphur compounds including hydrogen sulphide and mercaptans, the process comprising the steps of: (a) washing the gas stream with an aqueous amine washing solution to remove hydrogen sulphide, any carbon dioxide, and part of the mercaptans to obtain a first purified gas stream; (b) passing the first purified gas stream through one or more molecular sieves to further remove mercaptans to obtain a second purified gas stream; (c) contacting the second purified gas stream and a hydrogen stream with a hydrogenation catalyst under hydrogenation conditions to obtain a third purified gas stream; and (d) passing the third purified gas stream through one or more hydrogen sulphide guard beds to obtain purified gas. The invention further provides a method for the start-up of such process. | 02-12-2009 |
| 20090095658 | MULTIFUNCTIONAL SCAVENGER FOR HYDROCARBON FLUIDS - Compounds having the formulae and general formulae: | 04-16-2009 |
| 20090242461 | HYDROGEN SULFIDE SCAVENGERS AND METHODS FOR REMOVING HYDROGEN SULFIDE FROM ASPHALT - A method for reducing hydrogen sulfide in asphalt includes adding a hydrogen scavenger composition to the asphalt. The hydrogen sulfide scavenger includes a polyaliphatic amine having the formula I: | 10-01-2009 |
| 20100300938 | PROCESS FOR OXIDATIVE CONVERSION OF ORGANOSULFUR COMPOUNDS IN LIQUID HYDROCARBON MIXTURES - The process for the desulfurization of a sulfur-containing hydrocarbon mixture, such as a full-range, hydrotreated diesel oil, is accomplished with an aqueous oxidizing agent in the presence of a catalyst and a co-catalyst, and thereafter selectively removing the oxidized compounds by solvent extraction. Optionally, the foregoing steps are followed by solvent stripping and recovery, and a final polishing step. | 12-02-2010 |
| 20110000823 | MEMBRANE DESULFURIZATION OF LIQUID HYDROCARBONS USING AN EXTRACTIVE LIQUID MEMBRANE CONTACTOR SYSTEM AND METHOD - The process of the present invention is directed to the desulfurization of a sulfur-containing hydrocarbon stream with a membrane contactor, where sulfur compounds are concentrated in a sulfur-rich stream on a permeate side of the membrane using an extractive liquid, and a sulfur-lean stream is recovered as a retentate. The sulfur-rich stream, which has a small volume relative to the original hydrocarbon stream, is conveyed to a recovery zone to recover extractive liquid, and the remaining hydrocarbon stream having an increased concentration of sulfur compounds is passed to a downstream desulfurization apparatus or system, such as a hydrotreating system, to recover the hydrocarbons associated with the organosulfur compounds. | 01-06-2011 |
| 20110073526 | Method for Desulfurization of Hydrocarbon Oils - Provided herein are processes for desulfurization of a hydrocarbon oil. The processes comprise providing a hydrocarbon oil comprising sulfur impurities and mixing the oil with a phase transfer agent and a source of hypochlorite ions to provide a mixture. The mixture separates into an aqueous hypochlorite phase and a non-polar oil phase. The hypochlorite phase may then be removed from the oil phase, and the oil phase centrifuged and separated from any precipitate, thereby providing a cleaned oil phase. | 03-31-2011 |
| 20110203972 | Process for Removing Sulphur From Liquid Hydrocarbons - A process for the deep desulfurisation of hydrocarbons (HC), in particular Natural Gas Condensate (NGC), and HC comprising diesel, pre-extracted diesel and naphtha, is described which is capable of reducing the sulfur content of these HC from 500 to 30 ppm. The process comprises contacting the hydrocarbon material with an oxidant selected from organic peroxy acids, organic peroxides, inorganic peroxides and mixtures thereof, in at least a stochiometric amount sufficient to oxidise a sulfur compound to a sulfone compound; contacting the hydrocarbon material with an aqueous extractant to allow at least a portion of the oxidised sulfur compounds to be extracted into the aqueous extractant, and separating the hydrocarbon material from the aqueous extractant to give a hydrocarbon material of reduced sulfur content. Optionally, the process may include a second and subsequent extractions with the aqueous extractant to further reduce sulfur content. A final extraction with an IL may be conducted. The invention also provides for substitution of the aqueous extractant with an IL in one or more of the other extraction steps. The extractants and by products generated during f01 oxidation can be recovered by simple distillation techniques. | 08-25-2011 |
| 20110220551 | Method of Scavenging Hydrogen Sulfide and/or Mercaptans Using Triazines - Sulfhydryl compounds, including hydrogen sulfide and mercaptans, may be removed from a fluid or gaseous stream or substrate by reacting the hydrogen sulfide and mercaptans in the stream with a scavenger of the structural formula: | 09-15-2011 |
| 20110259797 | METHOD FOR DEEP DESULPHURIZATION OF HYDROCARBON FUELS - Method for deep desulphurization of hydrocarbon fuels includes following steps: (1) treatment of a hydrocarbon fuel under the condition of its mixing with gaseous oxidant selected from the group consisting nitrogen monoxide, dry air, ozone and a mixture of at least two of said reagents in order to oxidize sulfur-containing compounds presented in said fuel, and with a fine-dispersed adsorbent based on montmorillonite in order to adsorb oxidized sulfur-containing compounds, and (2) separation of spent adsorbent together with adsorbed oxidized sulfur-containing compounds from refined fuel. | 10-27-2011 |
| 20110284426 | Catalyst and method for alkli-free purification of oil raw materials from mercaptans - A catalyst for alkali-free purification of oil raw material, consisting of a metalocomplex selected from the group consisting of a solid metalocomplex and a liquid metalocomplex with a general formula (Cu | 11-24-2011 |
| 20120012506 | METHOD OF REMOVING HYDROGEN SULFIDE - The invention provides a method of removing hydrogen sulfide from hydrocarbon fluids. The method involves using a nitroxide molecule to promote a sulfide scavenger such as alkyl-triazine. The nitroxide effectively accelerates the scavenger's activity. This allows for the avoidance of the introduction of halides into the hydrocarbon stream. | 01-19-2012 |
| 20120018350 | MIXING-ASSISTED OXIDATIVE DESULFURIZATION OF DIESEL FUEL USING QUATERNARY AMMONIUM SALT AND PORTABLE UNIT THEREOF - The desulfurization of fossil fuels is provided by the combination of fossil fuels with an aqueous mixture of ozone or hydrogen peroxide and a Tetraoctylphosphonium salt phase transfer catalyst, and the mixture is then subjected to reactive mixing to form oxidize sulfur compounds in the fuel. The polar oxidized sulfones species are removed via another mixing step. The desulfurization device can be in the form of a portable device which provides for continuous mixing-assisted desulfurization for the removal of sulfur containing compounds from fossil fuels such as diesel fuel. | 01-26-2012 |
| 20120067781 | PROCESS AND CATALYST FOR DESULFURIZATION OF HYDROCARBONACEOUS OIL STREAM - The invention relates to a process and catalyst for the oxidative desulfurization of hydrocarbonaceous oil. In one aspect, solid carbon materials are provided having stable sulfur trioxide and nitrogen dioxide oxidative species on the surface thereof. Such materials are useful in the production of low sulfur hydrocarbon feedstocks and in the removal of refractory sulfur compounds. | 03-22-2012 |
| 20120091040 | Method and Apparatus For Desulfurization of Heavy Oil Using a Ferrate(VI) - A method for desulfurization of heavy fuel oil using ferrate compounds by mixing fuel oil containing sulfur compounds with a solvent and forming a fuel oil solvent mixture, dissolving the sulfur compounds present in the fuel oil solvent mixture. Adding a liquid ferrate solution to the fuel oil solvent mixture produces oxidized sulfur compounds, in solution. An absorbing agent is added to remove thed oxidized sulfur compounds from said solution. | 04-19-2012 |
| 20130015104 | PROCESS FOR SULFONE CONVERSION BY SUPER ELECTRON DONORSAANM Al-Hajji; AdnanAACI DammamAACO SAAAGP Al-Hajji; Adnan Dammam SAAANM Bourane; AbdennourAACI Ras TanuraAACO SAAAGP Bourane; Abdennour Ras Tanura SAAANM Koseoglu; Omer RefaAACI DhahranAACO SAAAGP Koseoglu; Omer Refa Dhahran SA - A process wherein an electron donor agent is provided for the decomposition of sulfones and sulfoxides formed after the oxidative desulfurization of a sulfur-containing hydrocarbon stream. | 01-17-2013 |
| 20130118955 | DESULFURIZATION OF HYDROCARBONS BY IONIC LIQUIDS AND PREPARATION OF IONIC LIQUIDS - The present invention relates to an improved desulfurization process using an ionic liquid compound of general formula C | 05-16-2013 |
| 20130334103 | DESULFURIZATION OF HYDROCARBON FEED USING GASEOUS OXIDANT - An apparatus and process for desulfurization of hydrocarbon feeds is disclosed in which pure nitrous oxide, or a mixture of nitrous oxide and oxygen or air, is used as a gaseous oxidant. Organosulfur compounds are converted to their corresponding oxides sulfones and/or sulfoxides in an oxidation reactor, and oxides are subsequently removed from the oxidation reactor effluent to recover a reduced sulfur-content hydrocarbon product. | 12-19-2013 |
| 20140091010 | PROCESS AND APPARATUS FOR REMOVING HYDROGEN SULFIDE - One exemplary embodiment can be a process for removing hydrogen sulfide from a fractionated hydroprocessed effluent. The process can include stripping a hydroprocessed effluent from a hydroprocessing zone, fractionating the stripped hydroprocessed effluent to obtain a naphtha cut, and sending the naphtha cut to a hydrogen sulfide removal zone. The hydrogen sulfide removal zone can include an amine wash settler, an amine contacting column, or a steam stripper. | 04-03-2014 |
| 20140299513 | PROCESS FOR OXIDATIVE CONVERSION OF ORGANOSULFUR COMPOUNDS IN LIQUID HYDROCARBON MIXTURES - The process for the desulfurization of a sulfur-containing hydrocarbon mixture, such as a full-range, hydrotreated diesel oil, is accomplished with an aqueous oxidizing agent in the presence of a catalyst and a co-catalyst, and thereafter selectively removing the oxidized compounds by solvent extraction. Optionally, the foregoing steps are followed by solvent stripping and recovery, and a final polishing step. | 10-09-2014 |
| 20140305844 | IONIC LIQUID FOR DESULFURIZATION OF LIGHT FUELS - The ionic liquid for desulfurization of light fuels is 1-methyl-3-pentyl 1H-imidazolium periodate, having the structural formula: | 10-16-2014 |
| 20140311948 | MERCURY REMOVAL WITH AMINE SORBENTS - Methods and apparatus relate to treatment of fluids to remove mercury contaminants in the fluid. Contact of the fluid with an amine that has absorbed a sulfur compound causes the mercury contaminants to be absorbed by the amine. Phase separation then removes from the fluid the amine loaded with the mercury contaminants such that a treated product remains. | 10-23-2014 |
| 20140353213 | HYDROPROCESSING CATALYST COMPOSITION CONTAINING A HETEROCYCLIC POLAR COMPOUND, A METHOD OF MAKING SUCH A CATALYST, AND A PROCESS OF USING SUCH CATALYST - A composition that comprises a support material having incorporated therein a metal component and impregnated with an additive compound that is selected from the group of heterocyclic, polar compounds of the formula C | 12-04-2014 |
| 20150090639 | HALOGEN-FREE IONIC LIQUIDS IN NAPHTHA DESULFURIZATION AND THEIR RECOVERY - Ionic liquids of the general formula C | 04-02-2015 |
| 20150299582 | SYSTEM AND METHOD FOR REMOVING HYDROGEN SULFIDE FROM OILFIELD EFFLUENTS - Mobile treatment systems and methods for use in removing hydrogen sulfide from oilfield effluents. The systems and methods use a pre-treatment subsystem, a vapor treatment subsystem and a treatment subsystem interconnected by a plurality of piping and valve subsystems. The systems and methods are not dependent on pH and may operate at temperatures as low as −20° C. The systems are easily transported to, and readily assembled at a site and are inexpensive, simple, quick, and extremely effective at removing large-scale quantities of hydrogen sulfide from oilfield effluents. | 10-22-2015 |
