Class 208/284 - Alkali metal compound

Subclass of Class 208 - Mineral oils: processes and products
Definition: Processes wherein an alkali metal compound is employed.
No. of patents: 34
Last issue date: 02/05/2008

Number	Title	Issue Date
7326822	Method for treating sour gas Metal hydride compounds, which are prepared by mixing together from about 1 to about 10 parts by molecular weight of at least one metal selected from the group consisting of silicon, aluminum, tin, and zinc; from about 1 to about 3 parts by molecular weight of an al...	02/05/2008
7326333	Apparatus and process for extracting sulfur compounds from a hydrocarbon stream Described is an apparatus and process for extracting sulfur compounds from a hydrocarbon stream. A prewash section for converting hydrogen sulfide to sodium sulfide by reaction with an alkali such as caustic communicates with an extractor section disposed directly a...	02/05/2008
7223332	Reactor and process for mercaptan oxidation and separation in the same vessel The present invention is an apparatus and process for oxidizing mercaptans in a preferably kerosene stream. By using a catalyst promoter, sufficient separation of hydrocarbon and aqueous alkali occurs in the reactor vessel to obviate the need for a settling tank. He...	05/29/2007
6902662	Method of reducing hydrolysis in hydrocarbon streams 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 effective amount of a treating...	06/07/2005
6627069	Method for reducing the naphthenic acid content of crude oil and its fractions The present invention relates to a process for reducing naphthenic acid content of crude oils and its fractions in the essential absence of oxygen and in the presence of an aqueous base selected from Group IA and IIA hydroxides and ammonium hydroxide and ...	09/30/2003
6464859	Process for deacidifying a crude oil system This invention relates to a process for deacidifying a crude oil system, said process comprising the steps of: a) contacting the crude oil system with a polar solvent, such that at least part of the organic acid present in the oil is extracted into the solvent...	10/15/2002
6372124	Removal of impurities from hydrocarbon streams The invention provides a method of purifying hydrocarbon streams from metallic impurities which comprises passing the stream through media comprising alumina with relatively minor amounts of calcia and magnesia....	04/16/2002
6039865	Removal of phosphates from hydrocarbon streams Phosphates can be removed from a hydrocarbon stream by contacting said stream with a ceramic formed of a basic material which is insoluble in the hydrocarbon stream. A ceramic as used in this patent document is a solid solution formed by calcination of a ...	03/21/2000
6037516	Method for removal of oxygenate impurities from organic chemical streams Oxygenate impurities are removed from an organic chemical feed or stream by treatment with an aqueous reducing agent and aqueous base, accompanied by separation. An aqueous solution of reducing agent and an aqueous solution of base are typically introduce...	03/14/2000
6036849	Process for the removal of hydrocarbons from soils A method of removing hydrocarbons from soils contaminated with various hydrocarbons such as gasoline, diesel fuel, solvents, motor oil and crude oil. The process first screens the soil to remove oversized rocks and debris and to reduce the contaminated so...	03/14/2000
6013176	Method for decreasing the metals content of petroleum streams The invention relates to a process for demetallating a petroleum stream by contacting a metals-containing petroleum feed in the presence of a base selected from Group IA and IIA hydroxides and carbonates and ammonium hydroxide and carbonates and mixtures ...	01/11/2000
5985137	Process to upgrade crude oils by destruction of naphthenic acids, removal of sulfur and removal of salts A method for upgrading an oil stream containing naphthenic acid and sulfur contaminants is described. In this method, an oil stream with naphthenic acid and sulfur contaminants is upgraded by the following steps. First, the oil stream is mixed with an alk...	11/16/1999
5976359	Methods for reducing the concentration of amines in process and hydrocarbon fluids Disclosed is a method for reducing the concentration of amines in hydrocarbon fluids and process streams by generating therein a nitrosating agent. The nitrosating agent will react with the amines to form innocuous by-products under refinery process condi...	11/02/1999
5891325	Process for reducing total acid number of crude oil 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 plurality of stages ...	04/06/1999
5871637	Process for upgrading heavy oil using alkaline earth metal hydroxide The present invention relates to a continuous in-situ process for reducing the viscosity, corrosivity and density of heavy oils comprising the steps of (a) contacting a heavy oil with an aqueous alkaline earth, Group IIA metal hydroxide at a temperature o...	02/16/1999
5650063	Removal of acidic halides from hot gas streams and attrition regeneration of caustic Acidic halides, especially chlorides, are removed from a dry fluid stream by contact with dry particles of solid caustic. The solid caustic particles are preferably non-porous, and disposed as a fluidized bed. Salts deposit on the surface of the caustic a...	07/22/1997
5645713	Three phase removal of halides from liquid hydrocarbons Acidic halides, especially chlorides, are removed from liquid hydrocarbons such as catalytic reformate by contact with solid caustic such as a bed of NaOH pellets covered with a thin film of brine. Hydration of reformate improves removal when large amount...	07/08/1997
5595648	Two phase removal of halides from liquid hydrocarbons cross-reference to related applications Acidic halides, especially chlorides, are removed from dry liquid hydrocarbon streams such as catalytic reformate by contact with large particles of low surface area solid caustic such as a bed of NaOH pellets. Effective neutralization is achieved in a be...	01/21/1997
4992164	Method of charge neutralization using chelants A method of neutralizing chloride ions present in a hydrocarbon medium during processing in a petroleum refinery. Nitrilotriacetic acid or its salt form is injected into the crude charge upstream of the preheat unit. Chloride levels are reduced in this wa...	02/12/1991
4992210	Crude oil desalting process A composition and method for improving the removal of corrosive contaminants from crude oil within the desalter in a petroleum refinery. An amine is added to the wash water or to the crude oil prior to processing in the desalter. The amine maximizes the y...	02/12/1991
4915818	Use of dilute aqueous solutions of alkali polysulfides to remove trace amounts of mercury from liquid hydrocarbons Disclosed is a method of removing mercury from contaminated liquid hydrocarbons (natural gas condensate) by contacting them with a dilute aqueous solution of alkali metal sulfide salt and recovering the treated liquid hydrocarbon. The addition of alkali m...	04/10/1990
4889618	Treatment of catalyst fines-oil mixtures A process for separating finely divided petroleum cracking catlyst from a mixture of the finely divided catalyst particles with a high boiling refractory hydrocarbon oil by intimately contracting said mixture with a concentrated aqueous solution of a basi...	12/26/1989
4880527	Process for removing residual mercury from liquid hydrocarbons with aqueous polysulfide solutions Liquid hydrocarbons (natural gas condensate) are depleted of contaminating mercury by contacting them with a solution of an alkali polysulfide....	11/14/1989
4818370	Process for converting heavy crudes, tars, and bitumens to lighter products in the presence of brine at supercritical conditions A majority amount of a heavy hydrocarbon crude is reacted with a minor amount of brine, at supercritical temperature and pressure for the brine, for a predetermined period of time in order to upgrade and convert the heavy hydrocarbon crude into a lighter ...	04/04/1989
4806233	Method of separating a hot hydrocarbonaceous stream A method of separating a hot hydrocarbonaceous stream having a temperature above the dew point of water and comprising hydrogen, vaporous hydrocarbonaceous compounds and an acidic inorganic compound which method comprises: (a) contacting the hot hydrocarb...	02/21/1989
4773988	Arsenic removal from shale oil by addition of basic materials Arsenic is removed from shale oil by the addition of one or more basic materials to the shale oil....	09/27/1988
4613726	Process for removing nickel, aluminum and chlorine from olefin oligomers Nickel, aluminum and chlorine derivatives which remain dissolved in olefin oligomers, after oligomerization in the presence of a nickel, aluminum, and chlorine-containing catalysts, are removed by successive treatments with: (a) anhydrous ammonia, (b) an ...	09/23/1986
4606812	Hydrotreating of carbonaceous materials A process for hydrotreating carbonaceous materials is disclosed. The carbonaceous material is contacted with steam and with empirical hydrates of alkali metal hydrosulfides, monosulfides, or polysulfides. The process hydrocracks, hydrogenates, denitrogena...	08/19/1986
4600502	Adsorbent processing to reduce basestock foaming A method for decreasing the foaming tendency of hydrocarbons, particularly lube basestocks, is disclosed. The method comprises passing the hydrocarbon through an adsorption zone having an adsorbent, preferably a basic adsorbent therein. In a preferred emb...	07/15/1986
4555310	Method of utilizing energy of high pressure condensate A method of utilizing the energy of a high pressure condensate stream including passing steam at an elevated pressure in indirect heat exchange with a material to be heated, collecting a condensate product condensed from the steam of the heat exchange ste...	11/26/1985
4428828	Upgrading hydrocarbonaceous oils with an aqueous liquid A process for upgrading oils is disclosed, in which the oil to be upgraded is contacted with liquid phase water and free oxygen at an elevated temperature and at a pressure sufficient to maintain at least part of the water in the liquid phase....	01/31/1984
4159240	Separating liquid and solid products of liquefaction of coal or like carbonaceous materials Slurryform products of coal liquefaction are treated with caustic soda in presence of H2 O in an inline static mixer and then the treated product is separated into a solids fraction and liquid fractions, including liquid hydrocarbons, by gravit...	06/26/1979
4060567	Method of reducing ଱-acetylene content of hydrocarbon Hydrocarbon fraction containing diolefins and ଱-acetylenes are treated with an alkali amide to reduce the ଱-acetylene content....	11/29/1977
4003823	Combined desulfurization and hydroconversion with alkali metal hydroxides Processes for the simultaneous desulfurization and hydroconversion of heavy carbonaceous feeds, including various sulfur-containing heavy petroleum oils, are disclosed. These feeds are contacted with alkali metal hydroxides in a conversion zone, in the pr...	01/18/1977

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Class 208/284 - Alkali metal compound