Alkali Or Alkali Earth Metal Compound (except Clays) Patents (Class 208/259)
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Patent number: 10093862Abstract: The invention relates to a use of a reversible molten salt for separating hydrocarbons, such as crude bitumen and/or heavy crude oil, from material comprising mineral solids. The invention relates also to a method comprising at least the steps of: (a) bringing a liquid phase comprising a reversible molten salt, preferably a reversible ionic liquid, in a contact with mineral solids comprising hydrocarbons and extracting hydrocarbons to the liquid phase from the mineral solids; (b) separating the mineral solids phase from the liquid phase, which comprises molten salt and hydrocarbons; (c) separating hydrocarbons from the liquid phase comprising molten salt; and (d) recycling the liquid phase comprising molten salt to step (a).Type: GrantFiled: June 17, 2015Date of Patent: October 9, 2018Assignee: Kemira OyjInventors: Lasse Kyllönen, Alistair King, Samantha Kiljunen, Mehrdad Hesampour
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Patent number: 8846994Abstract: The invention relates to a method for producing low-odor n-butane by catalytic hydrogenation of a feed mixture. The aim of the invention is to provide such a method, wherein the feed material, in addition to n-butane, n-butene and up to 1 mass % formic acid and/or up to 1 mass % pentanals and/or up to 0.5 mass % pentanols, also comprises carbon monoxide. The aim is achieved by treating the feed mixture in the temperature range of 15 to 120° C. with an aqueous solution of an alkali metal or alkaline earth metal hydroxide in the concentration range of 0.5 to 30 mass % and subsequently subjecting the feed mixture to the catalytic hydrogenation.Type: GrantFiled: May 21, 2010Date of Patent: September 30, 2014Assignee: Evonik Degussa GmbHInventors: Hans-Gerd Lueken, Alfred Kaizik, Markus Winterberg, Wilfried Bueschken, Dirk Fridag
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Patent number: 7264710Abstract: The reforming of heavy oil with supercritical water or subcritical water is accomplished by mixing together supercriticai water, heavy oil, and oxidizing agent, thereby oxidizing vanadium in heavy oil with the oxidizing agent at the time of treatment with supercritical water and separate vanadium oxide. The separated vanadium oxide is removed by the scavenger after treatment with supercritical water. In this way it is possible to solve the long-standing problem with corrosion of turbine blades by vanadium which arises when heavy oil is used as gas turbine fuel.Type: GrantFiled: September 18, 2002Date of Patent: September 4, 2007Assignee: Hitachi, Ltd.Inventors: Nobuyuki Hokari, Tomohiko Miyamoto, Hirokazu Takahashi, Hiromi Koizumi
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Publication number: 20030221993Abstract: A method for increasing the operational life-time of a pyrolysis gasoline hydrotreating process using a supported Group VIII metal catalyst by employing a catalyst having a significantly increased total surface area.Type: ApplicationFiled: May 30, 2002Publication date: December 4, 2003Inventor: Mark P. Kaminsky
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Patent number: 6037516Abstract: 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 introduced sequentially into the organic chemical stream, where they may react with any oxygenate impurities present. The reaction products of the oxygenate impurities and aqueous reducing agent and aqueous base are water soluble, and are typically removed in sequential fashion via any suitable separation means. For example, oxygenate impurities such as formaldehyde, acetaldehyde, propionaldehyde, and methyl formate may be removed from a propylene stream by treating the stream sequentially with aqueous sodium bisulfite and aqueous sodium hydroxide, accompanied by separation of the oxygenate impurity reaction products in coalescers.Type: GrantFiled: November 20, 1997Date of Patent: March 14, 2000Assignee: Huntsman ICI Chemicals LLCInventors: Peter S. Morford, Timothy L. Lambert, William K. Culbreth, III
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Patent number: 5993644Abstract: A process is provided for preparing high quality Group II and Group III lubricating base oils from a sulfur containing feedstock using mild hydrotreating followed by isomerization/dewaxing followed by hydrogenation over a sulfur resistant hydrogenation catalyst.Type: GrantFiled: June 26, 1997Date of Patent: November 30, 1999Assignee: Chevron U.S.A. Inc.Inventors: Jirong Xiao, Phil Winslow, James N. Ziemer
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Patent number: 5904839Abstract: 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 anhydrous alkaline earth, Group IIA metal hydroxide and low pressure hydrogen at a temperature of about 380.degree. C. to about 450.degree. C. for a time sufficient to form the corresponding alkaline earth metal sulfide, recovering the reduced sulfur feed and regenerating the alkaline metal hydroxide for recycle to treat additional feed. Beneficially, the process removes heteroatoms (sulfur and nitrogen).Type: GrantFiled: March 27, 1998Date of Patent: May 18, 1999Assignee: Exxon Research and Engineering Co.Inventor: Glen Barry Brons
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Patent number: 5180485Abstract: Indole impurities are removed from hydrocarbon-containing fluids by means of a magnesia-containing sorbent material.Type: GrantFiled: September 10, 1991Date of Patent: January 19, 1993Assignee: Phillips Petroleum CompanyInventors: Filippo Pennella, Fan-Nan Lin, Marvin M. Johnson
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Patent number: 5059731Abstract: The invention relates to a process of reduction of a refining catalyst before its use, the catalyst containing a support and an active phase with a base of at least one noble or nonnoble metal of Group VIII or Group Ib of the periodic table, the process consisting in:a) impregnating the catalyst with an aqueous or organic solution of a reducing agent compound,b) breaking down the reducing agent compound by heating the catalyst;c) drying the catalyst thus obtained.The invention is characterized in that a halogen additive is added with the reducing agent.The catalyst thus treated is particularly suitable, for example, for selective hydrogenation of unsaturated hydrocarbons.Type: GrantFiled: February 6, 1990Date of Patent: October 22, 1991Assignee: Europeane de Retraitement de Catalyseurs EurecatInventor: Georges Berrebi
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Patent number: 4532027Abstract: A method for improving the storage stability of shale oil liquids by extracting or contacting the shale oil with a base solution having a pH of at least about 7.5 to inhibit the formation or reduce the level of sediment and gum which can form in said shale oil.Type: GrantFiled: January 3, 1984Date of Patent: July 30, 1985Assignee: Exxon Research and Engineering Co.Inventors: John W. Frankenfeld, Robert L. Bruncati
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Patent number: 4409094Abstract: A process for treating liquid hydrocarbons to remove toxic, mutagenic and/or carcinogenic aromatic hydrocarbons comprises feeding the hydrocarbons into a reactor where vapors are thermally treated in contact with a catalyst consisting essentially of calcium oxide or a calcium oxide containing mineral. Thermally treating liquid hydrocarbons in contact with calcium oxide preferentially increases the cracking of aromatics thus producing a product having a reduced amount of aromatic compounds.Type: GrantFiled: August 8, 1980Date of Patent: October 11, 1983Assignee: Massachusetts Institute of TechnologyInventors: John P. Longwell, William A. Peters