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Matches 151 - 200 out of 528

Document Document Title
WO/2002/018519A1
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...  
WO2001081501A3
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 ...  
WO2001079380A3
This invention relates to reducing the amount of thiols (mercaptans) in petroleum streams, specifically, mercaptans above the five carbon molecular weight range.  
WO/2001/081501A2
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 ...  
WO/2001/079385A2
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...  
WO/2001/079396A1
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...  
WO/2001/079384A1
The invention describes a method for preparing a low sulfur motor gasoline utilizing ethanol and caustic extraction.  
WO/2001/079380A2
This invention relates to reducing the amount of thiols (mercaptans) in petroleum streams, specifically, mercaptans above the five carbon molecular weight range.  
WO/2001/079386A2
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...  
WO/2001/079391A1
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...  
WO/2001/060490A1
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...  
WO/2001/040113A1
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...  
WO/2001/036564A1
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)...  
WO/2000/068341A1
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 ...  
WO/2000/053706A1
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....  
WO/2000/050539A1
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 ...  
WO/2000/049114A1
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...  
WO/2000/037588A1
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...  
WO/2000/027957A1
The invention relates to a method for reprocessing waste oils and producing high-grade base oils, whereby waste oil is treated by means of distillation, thin-film evaporation in a high vacuum, optional fractionation for separation into l...  
WO/2000/020113A1
The present invention is a process for decreasing the acidity of a starting acidic crude oil by contacting an acidic crude with an effective excess of ammonia dissolved in said crude to form an ammonia-continuous oil discontinuous phase ...  
WO/2000/009631A1
The instant invention is directed to a process for reducing organic acids in petroleum feeds containing organic acids comprising: (a) thermally treating a petroleum feed containing organic acids in a thermal reaction zone comprising a pl...  
WO/1999/050375A1
The instant invention is directed to a process for extracting organic acids from a starting crude oil comprising the steps of: (a) treating the starting crude oil containing naphthenic acids with an amount of an alkoxylated amine and wat...  
WO/1999/050376A1
The instant invention is directed to a process for extracting organic acids including naphthenic acids, heavy metals, and sulfur from a starting crude oil comprising the steps of: (a) treating the starting crude oil containing organic ac...  
WO/1999/049000A1
A method is described for making a high purity coke fuel or anode grade coke from a heavy petroleum residuum by contacting a molten anhydrous alkali metal hydroxide with the heavy petroleum residuum at a temperature and for a time suffic...  
WO/1999/043766A1
A method for upgrading an oil stream containing naphthenic acid and sulfur contaminants which comprises, adding an alkaline earth oxide to the oil stream to form a mixture wherein said alkaline earth oxide is added at an effective amount...  
WO/1999/043406A1
A process for pre-treating a spent caustic stream prior to oxidation which includes countercurrent multi-stage elevated temperature solvent extraction of dissolved organic material from the spent caustic using a solvent to yield a spent ...  
WO/1999/034895A1
An electrochemical process for the production of a hydroxide solution and a sulfate by the electrolysis of a waste aqueous mixture of oxidizable sulfur impurities in the anode compartment of at least one electrolytic cell while producing...  
WO1999019539A3
Corrosion in aqueous alkanolamine, physical solvents, or combination of alkanolamine and physical solvent solutions used to remove acid gases from natural gas, synthetic gas, or light hydrocarbon streams can be reduced by addition of mix...  
WO/1999/019539A2
Corrosion in aqueous alkanolamine, physical solvents, or combination of alkanolamine and physical solvent solutions used to remove acid gases from natural gas, synthetic gas, or light hydrocarbon streams can be reduced by addition of mix...  
WO/1999/013957A1
A method for inhibiting foam formation in a stripper of an amine unit is disclosed. The addition of non-foaming demulsifiers to the liquid, compressed hydrocarbon stream entering or the aqueous organic amine stream entering or exiting an...  
WO/1999/010444A1
The corrosion of metals in contact with aqueous alkanolamine solution in acid gas removal units is inhibited by maintaining in the alkanolamine solution a corrosion inhibiting amount of a compound having formula (I) where R is S or O, an...  
WO/1998/041727A1
A method is provided for reducing an amount of a waste component present in a hydrocarbon fluid produced from an earth formation via a wellbore formed in the earth formation, the hydrocarbon fluid flowing in a stream of fluid through the...  
WO/1998/037937A1
A process for pretreating a spent caustic stream (18) prior to oxidation includes countercurrent multi-stage elevated temperature solvent extraction of dissolved organic material from the spent caustic in a multi-stage countercurrent liq...  
WO/1998/028381A1
The present invention is directed to an aqueous amine resin corrosion inhibitor composition and methods of using the same for inhibiting corrosion in equipment in contact with alkanolamine, hot carbonate solutions, diglyme and/or other s...  
WO/1998/000478A1
A hydrocarbon stream containing sulfur and sulfur compounds (18) is contacted with a water suspension of dolomitic lime and dibasic acid catalyst (13) in a reaction vessel (10) in order to transfer the sulfur and sulfur compounds from th...  
WO/1997/046638A1
An improved process for the desulfurization of petroleum feeds utilizing sodium metal comprising contacting said petroleum feeds with staged addition of sodium metal at a temperature of at least about 250 �C in the presence of excess o...  
WO/1997/023583A1
Acidic halides, especially chlorides, are removed from dry gas and liquid hydrocarbon streams by contact with an adsorbent of porous, inert particles impregnated with alkaline material. Preferably at least some of the internal pore struc...  
WO/1997/008271A1
The invention relates to a process for treating acidic crudes or fractions thereof to reduce or eliminate their corrosivity by addition of suitable amounts of Group IA or Group IIA oxides, hydroxides, hydroxides hydrates or naphthenate s...  
WO/1997/008270A1
The invention relates to processes for treating acidic crudes or fractions thereof to reduce or eliminate their acidity and corrosivity by addition of suitable amounts of Group IA or Group IIA oxides, hydroxides and hydrates. The process...  
WO/1997/008275A1
The invention relates to a process for treating naphthenic acid containing whole crudes or fraction thereof to reduce or eliminate their acidity by contacting the acidic whole crude or fractions thereof at a suitable temperature typicall...  
WO/1996/037279A1
The present invention provides a number of agents that are useful to inhibit aldol condensation in caustic scrubbers. Preferred agents include, but are not necessarily limited to benzoic hydrazide, hydroperoxides, hydrogen peroxide, salt...  
WO/1996/035500A1
The present invention provides a number of inhibiting agents that are useful to reduce aldol condensation in diethanolamine scrubbers. Suitable inhibiting agents include: hydrogen peroxide; hydroperoxides; nitroalkanes; salts of hypochlo...  
WO/1996/020133A1
The present invention provides for a method of decreasing the metals content of metal containing petroleum streams by forming a mixture of the petroleum fraction containing those metals and an essentially aqueous electrolysis medium, and...  
WO/1996/003198A1
Process and apparatus for desulfurizing the gaseous product of the vacuum distillation of the heavy fraction of crude oil. The initial gaseous mixture (8) to be desulfurized is an incondensible gas that contains hydrogen sulfide. A gas-l...  
WO/1995/028993A1
A method of decomposing a halogenated aromatic compound with an alkaline substance safely without fail, which comprises bringing the aromatic compound into contact with the alkaline substance in an aprotic polar solvent at a temperature ...  
WO/1994/014922A1
Described is a method of working up tar, tar products, distillation residues, coking residues, oil residues and similar organic compounds consisting of aromatic and other hydrocarbons or containing them, the products being worked up bein...  
WO/1993/025636A1
The present invention concerns a process for desulfurization of hydrocarbon products, in particular oil and other liquid fuels. According to the invention a hydrocarbon feedstock is mixed with an alkaline aqueous solution or suspension i...  
WO/1993/025635A1
A method of removing halogenated aromatic compounds contained in small amounts in a hydrocarbon oil comprising mainly nonaromatic hydrocarbon oils safety without fail. The method comprises bringing the hydrocarbon oil into contact with a...  
WO/1992/008770A1
Commercially valuable oil is recovered from refinery-produced, Resource Conservation and Recovery Act classified, hazardous waste oil sludges by a series of volatilizing and condensing steps (which may vary depending on the oil, water, a...  
WO/1989/001508A1
Used oils, in particular spent lubricating oils, are coarse filtered and then mixed with an aqueous solution of sodium or potassium silicate and an aqueous solution of polyalkylene glycol at high temperature with stirring. The mixture ob...  

Matches 151 - 200 out of 528