| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 208189000 | Sweetening | 25 |
| 20100059413 | THIOETHERIFICATION PROCESSES FOR THE REMOVAL OF MERCAPTANS FROM GAS STREAMS - This invention relates to thioetherification processes for the removal of mercaptans in charge gas streams. In particular, the invention relates to thioetherification processes for the removal of mercaptans using a catalyst comprising palladium and silver. | 03-11-2010 |
| 20100084315 | PROCESS FOR TREATING ELEMENTAL SULPHUR FOR SMELL IMPROVEMENT - A process for treating a stream of elemental sulphur comprising an organic polysulphide and/or a thiol for smell improvement, the process comprising the following steps: (a) providing a molten stream of elemental sulphur comprising an organic polysulphide and/or a thiol at a temperature in the range of from 120 to 160° C.; (b) admixing a liquid unsaturated compound with the stream of molten elemental sulphur in an amount in the range of from 0.01 to 10.0 wt % based on the weight of sulphur to allow the organic polysulphide and/or thiol to react with the unsaturated compound. | 04-08-2010 |
| 20120043259 | Extraction of Mercaptans in the Absence of Oxidation Catalyst - Processes for the extractive removal of mercaptan compounds from hydrocarbon feeds, in which the contact between oxidation catalyst with oxygen and mercaptan in the feed is reduced or eliminated, are described. Oxidation of mercaptan compounds to disulfides in the extraction zone is prevented, thereby overcoming separation inefficiencies associated with the inability to extract disulfides in this zone. The invention advantageously relies on the use of a fixed bed of catalyst in the oxidation or regeneration zone, which is coupled to the extraction zone. | 02-23-2012 |
| 20140197073 | PROCESS FOR THE PRODUCTION OF A GASOLINE WITH A LOW SULFUR CONTENT - This invention relates to a process for treatment of a gasoline comprising diolefins, olefins, and sulfur-containing compounds including mercaptans, in which:
| 07-17-2014 |
| 20150353843 | METHODS AND APPARATUSES FOR REMOVING SULFUR COMPOUNDS FROM A HYDROCARBON STREAM - Methods and apparatuses are provided for removing sulfur compounds from a hydrocarbon stream. A method includes contacting a hydrocarbon feed stream with a basic aqueous solution in an extractor to produce a sweetened hydrocarbon stream and a rich stream, where the rich stream includes a mercaptan salt. The rich stream is contacted with oxygen in an oxidizer to convert the mercaptan salt into a disulfide and to produce an oxidizer effluent stream. The oxidizer effluent stream is separated into a gas recycle stream and a mixed disulfide stream, and the gas recycle stream is combined with the rich stream. | 12-10-2015 |
| 20150361352 | APPARATUSES AND METHODS FOR TREATING MERCAPTANS - Embodiments of apparatuses and methods for treating mercaptans are provided. In one example, an apparatus comprises a vessel capable of receiving a feed stream that comprises liquid hydrocarbons and the mercaptans. The vessel comprises an extraction section that is capable of extracting a portion of the mercaptans from the feed stream to form a mercaptan-reduced, liquid hydrocarbon-containing stream. A catalyst bed section is capable of contacting the mercaptan-reduced, liquid hydrocarbon-containing stream with a catalyst in the presence of oxygen (O | 12-17-2015 |
| 20160060544 | FIXED BED APPARATUS WITH SUPPORT STRUCTURE AND METHODS FOR PROCESSING HYDROCARBONS USING THE SAME - Clay treatment apparatuses and methods for processing hydrocarbon products using clay treatment apparatuses are disclosed. In one exemplary embodiment, a clay treatment apparatus includes a vessel enclosing an interior space, an active clay material disposed within the interior space of the vessel, and a clay retention structure positioned above a bottom head portion of the vessel. The clay retention structure includes a wire mesh coupled with a perforated plate. In another exemplary embodiment, a method for processing a hydrocarbon product includes the steps of contacting the hydrocarbon product with an active clay material within an interior space of a vessel and passing the hydrocarbon product through a clay retention structure that includes a wire mesh and a perforated plate. | 03-03-2016 |
| 20160199819 | Bimetallic Mercaptan Conversion Catalyst for Sweetening Liquefied Petroleum Gas at Low Temperature | 07-14-2016 |
| 208190000 | With hypochlorites | 2 |
| 20120103871 | Method for Reducing Mercaptans in Hydrocarbons - A method for reducing mercaptan concentration in a liquid hydrocarbon, comprising: contacting a mercaptan-rich liquid hydrocarbon having a first concentration of mercaptan sulfur with a composition comprising an oxidizing agent and water wherein the molar ratio of the oxidizing agent to mercaptan sulfur in the mercaptan-rich liquid hydrocarbon is from 3:1 to 10:1; and separating the water from the liquid hydrocarbon to yield a mercaptan-depleted liquid hydrocarbon having a second concentration of mercaptan sulfur, the second concentration being less than the first concentration; wherein a major amount of mercaptan compounds in the mercaptan-rich liquid hydrocarbon are converted to at least one sulfur oxoacid or salt thereof, having the formula: | 05-03-2012 |
| 20120103872 | METHOD FOR REDUCING MERCAPTANS IN HYDROCARBONS - A method for reducing mercaptan concentration in a crude oil is disclosed. The method comprises contacting the crude with a treating solution comprising a hypochlorite solution, whereby the mercaptan sulfur is oxidized and converted to at least one sulfur oxoacid or salt thereof, yielding a treated crude oil having less than 50 ppm mercaptan sulfur and residual organic chloride. The treated crude oil containing residual organic chloride is brought in contact with a caustic solution at a molar ratio of caustic to chloride of 0.1:1 to 50:1, generating an upgraded crude oil with less than 10 ppm organic chloride. In one embodiment, the spent treating solution is recycled to form a regenerated hypochlorite stream for use in the treatment solution. | 05-03-2012 |
| 208196000 | With peroxides | 2 |
| 20120111769 | CRUDE OIL DESULFURIZATION - A method of removing sulfur from sour oil by subjecting sour oil having a first sulfur content to high shear in the presence of at least one desulfurizing agent to produce a high shear treated stream, wherein the at least one desulfurizing agent is selected from the group consisting of bases and inorganic salts, and separating both a sulfur-rich product and a sweetened oil product from the high shear-treated stream, wherein the sulfur-rich product comprises elemental sulfur and wherein the sweetened oil product has a second sulfur content that is less than the first sulfur content. A system for reducing the sulfur content of sour oil via at least one high shear device comprising at least one rotor and at least one complementarily-shaped stator, and at least one separation device configured to separate a sulfur-rich product and sweetened oil from the high shear-treated stream. | 05-10-2012 |
| 20150353842 | APPARATUSES AND METHODS FOR CONVERSION OF MERCAPTANS - Embodiments of apparatuses and methods for conversion of mercaptans are provided. In one example, an apparatus comprises a vessel that is capable to receive a feed stream that comprises liquid hydrocarbons and the mercaptans. The vessel comprises a catalyst bed section that is capable of contacting the feed stream with a catalyst in the presence of oxygen (O | 12-10-2015 |
| 208203000 | With alkali metal hydroxide or carbonate | 8 |
| 20150034529 | PROCESSES AND APPARATUSES FOR REMOVING MERCAPTANS FROM A FEED STREAM - Processes and apparatuses for removing mercaptans from feed streams are provided. In one embodiment, a process for removing mercaptans from a feed stream includes extracting mercaptans and a polymeric precursor from the feed stream with a caustic solvent to form a polymeric precursor rich spent caustic solvent. The polymeric precursor rich spent caustic solvent is contacted with a polymeric precursor-deficient hydrocarbon stream in a multistage vessel and the polymeric precursor is extracted from the polymeric precursor rich spent caustic solvent to form a treated spent caustic solvent. The process contacts the treated spent caustic solvent with oxygen and oxidizes the mercaptans to disulfides to form an oxidized caustic solvent stream. The process includes separating the oxidized caustic solvent stream into an offgas stream, a disulfide stream, and a caustic solvent stream. | 02-05-2015 |
| 20150114883 | METHODS FOR TREATING HYDROCARBON STREAMS CONTAINING MERCAPTAN COMPOUNDS - Disclosed is a method for treating hydrocarbon streams containing mercaptan compounds including contacting a first, relatively light hydrocarbon stream including mercaptan compounds with a first alkaline caustic solution to remove the mercaptan compounds from the first hydrocarbon stream and generate a second alkaline caustic solution including mercaptan compounds and oxidizing the mercaptan compounds in the second alkaline caustic solution to generate a third alkaline solution including a first concentration of disulfide compounds. The method further includes separating a portion of the disulfide compounds in the third alkaline solution to form a fourth alkaline solution including a second concentration of disulfide compounds. Still further, the method includes contacting the fourth alkaline solution with a second, relatively heavy hydrocarbon stream including mercaptan compounds to remove the mercaptan compounds from the second hydrocarbon stream, remove the disulfide compounds from the fourth alkaline solution, and generate the first alkaline caustic solution. | 04-30-2015 |
| 20150368568 | METHODS AND APPARATUSES FOR REMOVING AMINES FROM EXTRACTED HYDROCARBON STREAMS - Methods and apparatuses for processing hydrocarbons are provided. In one embodiment, a method for processing a hydrocarbon stream includes feeding a hydrocarbon stream including amine and mercaptan to an extraction zone. The method includes contacting the hydrocarbon stream with an alkaline stream in the extraction zone to convert the mercaptan to a mercaptide. Further, the method includes contacting the hydrocarbon stream with water in the extraction zone to remove the amine from the hydrocarbon stream. | 12-24-2015 |
| 20160115393 | PROCESSES AND APPARATUS FOR SEPARATING TREATED GASOLINE RANGE HYDROCARBONS FROM SPENT ALKALI SOLUTION - Processes and apparatus are provided for treating gasoline range hydrocarbons containing mercaptans to convert the mercaptans to organic disufides. The process involves contacting treated gasoline range hydrocarbons comprising organic disulfides with a coalescing material and separating refined gasoline range hydrocarbons and organic disulfides from spent alkali using a separation device. The apparatus comprises a treatment vessel suitable for housing a catalyst therein for producing treated gasoline range hydrocarbons comprising organic disulfides, as well as a separation device and coalescing material therein for separating gasoline range hydrocarbons and organic disulfides from spent alkali. | 04-28-2016 |
| 208204000 | With added oxygen containing organic compound | 4 |
| 20110127194 | Hydrocarbon Treatment Process - In a catalytic treatment process, mercaptans in sour hydrocarbon are oxidized to disulfide oils using an aqueous treatment solution containing a chelated polyvalent metal catalyst, alkali metal hydroxide, and the alkali metal salt of at least one alcohol in a non-dispersive mixing apparatus wherein an upgraded hydrocarbon containing the disulfide oils is produced. | 06-02-2011 |
| 20110163008 | HYDROCARBON TREATMENT PROCESS - In a catalytic treatment process, mercaptans in sour hydrocarbon are oxidized to disulfide oils using an aqueous treatment solution containing a chelated polyvalent metal catalyst, alkali metal hydroxide, and the alkali metal salt of at least one alcohol in a non-dispersive mixing apparatus wherein an upgraded hydrocarbon containing the disulfide oils is produced. | 07-07-2011 |
| 20140284250 | DEVICE FOR EXTRACTING SULPHUR-CONTAINING COMPOUNDS BY LIQUID-LIQUID EXTRACTION BY MEANS OF A SODA SOLUTION WITH AN OPTIMIZED FINAL WASHING STEP - Process of extracting sulphur-containing compounds from a hydrocarbon cut of the gasoline or LPG type by liquid-liquid extraction with a soda solution employing a unit ( | 09-25-2014 |
| 208205000 | Acyclic alcohol | 1 |
| 20150048006 | HYDROCARBON TREATMENT PROCESS - In a catalytic treatment process, mercaptans in sour hydrocarbon are oxidized to disulfide oils using an aqueous treatment solution containing a chelated polyvalent metal catalyst, alkali metal hydroxide, and the alkali metal salt of at least one alcohol in a non-dispersive mixing apparatus wherein an upgraded hydrocarbon containing the disulfide oils is produced. | 02-19-2015 |
| 208207000 | Nitrogen containing compound | 5 |
| 20080230445 | METHOD OF SCAVENGING MERCAPTANS FROM HYDROCARBONS - Hydrogen sulfide and mercaptans in hydrocarbons, gas mixtures of hydrocarbons and the like may be scavenged therefrom by being brought into intimate contact with a mercaptan scavenger formulation of quaternary ammonium alkoxide or hydroxide in the presence of a high oxidative state metal such as cobalt, iron, chromium and/or nickel. The high oxidative state metal, being an oxidizer, acts as a catalyst when combined with the quaternary ethoxide or hydroxide for improved mercaptan scavenging performance. | 09-25-2008 |
| 20100012553 | Tetra-sulfo iron-phthalocyanine and related methods - The present invention relates to making tetra-sulfo iron-phthalocyanine by reacting sulfonated reactant(s) in the presence a boron-containing promoter. The present invention also relates to making tetra-sulfo iron phthalocyanine more tolerant to oxygen by combining the tetra-sulfo iron-phthalocyanine with a stabilizing amount of a complexing agent (e.g., a stabilizing amine) and/or contacting the tetra-sulfo iron-phthalocyanine with steam. | 01-21-2010 |
| 20120012505 | USE OF ALPHA-AMINO ETHERS FOR THE REMOVAL OF MERCAPTANS FROM HYDROCARBONS - The invention provides a method of removing mercaptans from hydrocarbon fluids. The method involves using an alpha-amino ether to scavenge the mercaptans. The scavenging reaction converts the mercaptans into a hydrocarbon soluble compound that mitigates the odor of the mercaptans. | 01-19-2012 |
| 20140209510 | HYDROGEN SULFIDE SCAVENGERS - Disclosed herein are scavenging compounds and compositions useful in applications relating to the production, transportation, storage, and separation of crude oil and natural gas. Also disclosed herein are methods of using the compounds and compositions as scavengers, particularly in applications relating to the production, transportation, storage, and separation of crude oil and natural gas | 07-31-2014 |
| 20150291890 | HYDANTOINS AS HYDROGEN SULFIDE AND MERCAPTAN SCAVENGERS - The present invention generally relates to compositions and methods for scavenging hydrogen sulfide and/or mercaptans from fluids. More particularly, the invention relates to the use of hydantoin compounds as a hydrogen sulfide or a mercaptan scavenger for hydrocarbon fluids, particularly for natural gas, crude oil, field oil, fuel oil, naphtha, gasoline, kerosene, diesel, slurry oil, gas oil, resid, refinery gas, coal gas, tar, asphalt, coke gas, ammonia synthesis gas, gas from a sulfurization plant, or industrial gas streams. | 10-15-2015 |
