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WO/2008/040100 |
The present invention refers to a pre-treatment process for hydrocarbon-based liquid fuels, as well as to the fuels obtained by said process.
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WO/2007/078416 |
A process for production of sweet heavy crude oil is disclosed. The process comprises the steps of: removing contaminants from heavy oil, bitumen or bitumen froth to form a substantially dewatered deasphalted oil; and subsequent desulfur...
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WO/2007/057165 |
Odours can be removed from hydrocarbons by bringing them into contact with aqueous alkali lye. According to the invention, the hydrocarbons are mixed with the aqueous lye in such a manner that the specific power input into the system fro...
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WO/2007/057165 |
Odours can be removed from hydrocarbons by bringing them into contact with aqueous alkali lye. According to the invention, the hydrocarbons are mixed with the aqueous lye in such a manner that the specific power input into the system fro...
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WO/2006/133262 |
The disclosed process removes or reduces impurities such as asphaltenes, solids (especially solid fines), sulfur, metals, chlorides, water, salts, and acids from bitumen, oil sands, and crude oils with a wide range of gravities. A crude ...
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WO/2006/096396 |
A method for recovering base oil from waste lubricating oil by separating base oil range constituents from a waste lubricating oil mixture, thereafter separating higher quality base oil constituents and lower quality base oil constituent...
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WO/2006/092092 |
The invention discloses a treatment method for atomizing and air-drying spent caustic solution and residue from oil refinery, which relates to a method of treating spent caustic residue from oil refinery using renewable natural energy. O...
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WO/2006/071135 |
The invention relates to a method for the preparation of the polyolefinic bases of synthetic oils by the cationic oligomerization of olefinic feedstock and can be used in the petrochemical industry. A new method for the preparation of th...
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WO/2006/071506 |
The use of one or more alkali metals, preferably sodium, to remove sulfur from hydrocarbon streams containing up to 100 wppm sulfur. The hydrocarbon stream is introduced into a reactor where it is contacted with one or more alkali metals...
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WO/2006/039125 |
Refractory or hard sulfur found in a hydrocarbon stream containing refractory sulfur heterocycle compounds, particularly those exhibiting steric hindrance, is removed from the stream by contacting it with a sodium reagent comprising a so...
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WO/2006/031432 |
This invention is a method for reducing the total acid number of organic acid containing petroleum oil comprising forming a water-in-oil emulsion comprising an aqueous Group IIA metal hydroxide solution or slurry in a hydrocarbon oil, sa...
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WO/2006/019525 |
A method for reducing the level of elemental sulfur from sulfur-containing hydrocarbon streams as well as reducing the level of total sulfur in such streams. Preferred hydrocarbon streams include fuel streams such as naphtha and distilla...
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WO/2006/014486 |
Described herein are compositions and methods for using metal oxides to upgrade oil. Metal oxides may be used as catalysts to reduce the TAN of the oil by converting carboxylic acids such as naphthenic acids into non-corrosive products. ...
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WO/2006/007034 |
This invention relates to the hydroprocessing of naphtha with removal of mercaptan from product. Naphtha feedstock is hydrotreated and hydrocracked. Sulfur-containing contaminants, notably C5+ recombinant mercaptans, are then selectively...
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WO/2005/121279 |
Disclosed is an apparatus and process for extracting sulfur compounds from a hydrocarbon stream. A prewash section for converting hydrogen sulfide to a sulfide salt by reaction with an alkali such as caustic communicates with an extracto...
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WO/2005/113707 |
A method for upgrading the viscoelastic properties of a heavy oil by altering its elastic modulus. An effective amount of one or more elastic modulus lowering agents are used, wherein preferred elastic modulus lowering agents include min...
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WO/2004/067682 |
A process for desulfurizing a gasoline stream while continuing to maintain the octane rating of the blend stock. A gasoline stream containing sulfur compounds and olefins is introduced into a fractionation zone to produce a low boiling f...
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WO/2004/024850 |
The present invention provides a process for the production of a fuel composition having a NACE corrosion rating of between 0% and 25%, comprising the steps of: (i) contacting a fuel with a corrosion inhibitor of formula (I) to provide a...
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WO/2004/007644 |
The invention relates to a method of regenerating used oils of petroleum origin by means of extraction with aliphatic solvents. The inventive method is characterised in that, once the solvent has been eliminated from the extract, it comp...
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WO/2004/003110 |
A method for inhibiting and dissolving polymeric deposits on the internal surfaces of a caustic wash unit system in a hydrocarbon cracking process wherein said deposits result from polymerization of at least one component contained withi...
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WO/2003/093399 |
A method of reducing hydrolysis in a hydrocarbon stream comprising adding to a hydrocarbon stream containing a chloride compound which undergoes hydrolysis at elevated temperatures in the presence of water to form hydrochloric acid, an e...
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WO/2003/093397 |
A method for inhibiting and dissolving the deposits formed on caustic or alkaline scrubbers used in scrubbing acidic gases such as carbon dioxide, hydrogen sulfide, which are formed during the pyrolytic cracking of naphtha, ethane, and p...
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WO/2003/072224 |
A caustic recovery system comprising an oxygen source adapted to provide a gas stream comprising at least 30% oxygen. A method of regenerating caustic comprising intermingling spent caustic with a gas stream comprising at least 30% oxygen.
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WO/2003/050207 |
A process for fractionating and treating of a full range naphtha stream. The full boiling range naphtha stream is first split into a light boiling range naphta, an intermediate boiling range naphtha and a heavy boiling range naphtha. The...
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WO/2003/035807 |
A stable distillate fuel blend useful as a fuel or as a blending component of a fuel that is suitable for use in turbine engine, said fuel blend prepared from at least one highly paraffinic distillate fuel component having low to moderat...
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WO/2002/102936 |
The invention relates to a method for treating and upgrading a hydrocarbon containing acidic species such as mercaptans, comprising: (a) contacting the hydrocarbon, in the essential absence of oxygen, with a first phase of a treatment co...
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WO/2002/102940 |
The invention relates to a method for desulfurizing naphtha boiling-range hydrocarbons such as cracked naphtha. More particularly, the invention relates to hydrotreating the naphtha under selective hydrotreating conditions, and then remo...
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WO/2002/102935 |
The invention relates to a method for treating and upgrading a hydrocarbon containing acidic species such as mercaptans, comprising: (a) contacting the hydrocarbon, in the essential absence of oxygen, with a first phase of a treatment co...
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WO/2002/102934 |
The invention relates to a composition and method for treating liquid hydrocarbons in order to remove acidic impurities, such as mercaptans, particularly mercaptans having a molecular weight of about C¿4? (C¿4?H¿10?S=90 g/mole) and hi...
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WO/2002/102933 |
The invention relates to a method for treating naphtha, such as catalytically cracked naphtha, in order to remove acidic impurities, such a mercaptans. In particular, the invention relates to a method for mercaptans having a molecular we...
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WO/2002/062925 |
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 compound...
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WO/2002/036715 |
This invention is a method to inhibit the polymerization of carbonyl compounds in a basic wash unit operation in a hydrocarbon cracking process, wherein a compound selected from the group consisting of alpha-amino acids and esters thereo...
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WO/2002/034863 |
Methods for removing mercaptans from hydrocarbons streams, for example crude oil and natural gas, are provided. The methods use basic metal salts which react with mercaptans to form mercaptides. The metal salts are dissolved or suspended...
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WO/2002/018518 |
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 tempe...
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WO/2002/018519 |
A process for deacidifying a crude oil and/or crude oil distallate containing organic acids, said process comprising: (a) contacting the crude oil and/or crude oil distillate with (i) a Group IA metal salt selected from the group contain...
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WO/2001/081501 |
The invention relates to methods for a demercaptanisation of dry and liquefied hydrocarbon gases, gasoline fractions, light oils and gas condensates and can be used for the gas, petroleum-refining, petroleum production and petrochemical ...
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WO/2001/079386 |
The present invention relates to a process for reducing naphthenic acid content of crude oils and its fractions in the presence of an aqueous base selected from Group IA and IIA hydroxides and ammonium hydroxide and mixtures thereof, a p...
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WO/2001/079384 |
The invention describes a method for preparing a low sulfur motor gasoline utilizing ethanol and caustic extraction.
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WO/2001/079391 |
A gasoline blendstock is produced having a decreased amount of sulfur by first selectively hydrodesulfurizing a cracked naphtha that contains both non-mercaptan and mercaptan sulfur to produce a first product having a decreased amount of...
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WO/2001/079385 |
The present invention relates to a process for denitrogenating a distillate stream by contacting an organic nitrogen-containing petroleum distillate feed in the presence of an aqueous base selected from Group IA and IIA hydroxides and am...
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WO/2001/079396 |
The present invention is a process to reduce the fouling of equipment for processing petroleum feedstreams. The fouling is reduced by reducing the presence of peroxides and hydroperoxides in the feedstream. The steps of the process inclu...
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WO/2001/079380 |
This invention relates to reducing the amount of thiols (mercaptans) in petroleum streams, specifically, mercaptans above the five carbon molecular weight range.
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WO/2001/060490 |
Vertical extending liquid/liquid contacting column, which column will, when in use, contain a dispersed and a continuous liquid phase, the column having a top liquid feed inlet, a top liquid outlet, a bottom liquid feed inlet, a bottom l...
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WO/2001/040113 |
Process for treating and regenerating spent aqueous solutions of caustic soda from purification and cleansing of petroliferous products, comprising the following steps in combination: optional deoiling said spent solution of caustic soda...
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WO/2001/036564 |
A process and apparatus to extract and recover heavy metals and sulfur from crude oil (3) or petroleum fuel products consisting of the steps of emulsifying (4) the crude oil with an emulsifying agent (5), adding a leach solution (14, 17)...
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WO/2000/068341 |
The invention is a process for decreasing the acidity of an organic acid containing petroleum oil, comprising contacting said petroleum oil containing organic acids with an effective amount of an alcohol and an effective trace amount of ...
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WO/2000/053706 |
A process for removing contaminants from used motor oil (10), used motor oil from a source (12) is passed through a used oil feed pump (14) to a heater (16). An amount of base is added to the used oil of between 0.5 and 5 weight percent....
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WO/2000/050539 |
The present invention describes a process for decreasing the acidity of a starting calcium containing, non-acid treated acidic crude oil by adding such an acidic crude oil to an effective amount of an aqueous base solution at conditions ...
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WO/2000/049114 |
A method for removing acidic compounds, color, and polynuclear aromatic hydrocarbons. The base catalyzed flow apparatus allows used oil to pass through the used oil feed pump (24) to heater (16). At the same time, a 50 % aqueous sodium o...
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WO/2000/037588 |
The present invention relates to a process for demetallating a petroleum stream by contacting a metals-containing petroleum feed in the presence of an aqueous base selected from Group IA and IIA hydroxides and carbonates and ammonium hyd...
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