From Organic Liquids Patents (Class 423/64)
  • Patent number: 8277766
    Abstract: This invention relates to a process that utilizes high-temperature oxidation with controlled stoichiometry in the concentration of vanadium from carbonaceous feedstock materials containing vanadium, such as residues, ashes and soots resulting from the combustion or gasification of petroleum vacuum residuum, petroleum coke, kerogen from oil shale, and bituminous sand, e.g., tar sand or oil sand, or extra heavy oil or other carbonaceous feedstocks that contain vanadium. A preferred embodiment uses a counter-rotating vortex reactor and a cyclonic, entrained-flow reactor to rapidly heat and oxidize feedstock at temperatures in the range of about 2100° F. to 2900° F., resulting in a vapor stream with entrained, solid materials comprising the concentrated vanadium species.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: October 2, 2012
    Inventors: James G. Hnat, Mark A. Schaffer
  • Patent number: 7722689
    Abstract: A device is used for supplying fuel to a burner in a fuel cell system with a reformer. The fuel comprises a materials flow of a reformate gas, which materials flow is depleted of hydrogen, and a materials flow of a compound which comprises carbon and hydrogen. According to the invention, the device comprises at least one nozzle means in which the two materials flows can be mixed together. At least one of the materials flows is controllable as far as its through-flow is concerned.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: May 25, 2010
    Assignee: Airbus Deutschland GmbH
    Inventors: Stefan Diezinger, Arnold Lamm, Gert Hinsenkamp, Jochen Schäfer, Marc Sommer, Dimosthenis Trimis
  • Publication number: 20090104095
    Abstract: Novel compositions, as well as related methods, coatings, and articles, are disclosed.
    Type: Application
    Filed: October 17, 2008
    Publication date: April 23, 2009
    Inventors: Jeffrey R. Morgan, John D. Jarrell
  • Patent number: 7214362
    Abstract: An object of the present invention is to provide a method for purifying a highly pure niobium compound and/or tantalum compound, the method enabling the purification of a highly pure niobium compound and tantalum compound in a simplified manner at a low cost. The object is met by providing a method comprising adding an organic solvent to an aqueous solution containing a niobium compound and/or tantalum compound together with impurities, and then performing extraction via the solution. A niobium compound and/or tantalum compound dissolved in a solution is allowed to precipitate, and said aqueous solution is obtained by dissolving the precipitate in water.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: May 8, 2007
    Assignee: Stella Chemifa Kabushiki Kaisha
    Inventors: Hirohisa Kikuyama, Masahide Waki, Hiroto Izumi, Hirofumi Yazaki, Kenji Aoki, Shinji Hashiguchi, Masatsugu Kawawaki, Yuko Murakami
  • Publication number: 20040213716
    Abstract: A method for the dissolution and purification of tantalum ore and synthetic concentrates is described. The method preferably uses ammonium bifluoride as the fluoride source in place of the hydrofluoric acid used in the conventional methods. Other fluoride compounds such as NaF, KF, and CaF2 may be used alone or in combination with ammonium bifluoride. The tantalum concentrate and fluoride source are combined with sulfuric acid to form a solution containing tantalum values and impurities. The tantalum values are then separated from the impurities by solvent extraction.
    Type: Application
    Filed: April 22, 2004
    Publication date: October 28, 2004
    Applicant: OSRAM SYLVANIA INC.
    Inventors: Raj P. Singh Gaur, Robert G. Mendenhall
  • Publication number: 20040028584
    Abstract: A catalyst, a process for making the catalyst and a process for using the catalyst in aromatization of alkanes to aromatics, specifically, aromatization of alkanes having two to six carbon atoms per molecule, such as propane, to aromatics, such as benzene, toluene and xylene. The catalyst is an aluminum-silicon-germanium zeolite on which platinum has been deposited. Germanium is in the framework of the crystalline zeolite. Platinum is deposited on the zeolite. The catalyst may be supported on magnesia, alumina, titania, zirconia, thoria, silica, boria or mixtures thereof. The catalyst may contain a sulfur compound on the surface of the catalyst. The sulfur compound may be added to the catalyst in a pretreatment process or introduced with the hydrocarbon feed to contact the catalyst during the aromatization process.
    Type: Application
    Filed: August 6, 2002
    Publication date: February 12, 2004
    Inventors: Gopalakrishnan G. Juttu, Robert Scott Smith
  • Patent number: 6485629
    Abstract: A process for separating a first source of a heavy metal ion or mixtures of heavy metal ions, (Me1), from a solution comprising a complex of said Me1 and EDDS, (Me1-EDDS), by displacement of said Me1 with a second source of a heavy metal ion Me2 by addition to the solution of a salt of said Me2.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: November 26, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Diederik Rudolf Schowanek, Tom Cornelis Jan Feijtel
  • Patent number: 6193941
    Abstract: Besides a synthesis gas, a metallurgical raw material is to be produced from an oil containing heavy metals. To do this, the oil is partially oxidized and the heavy metal-containing soot is separated and burnt and the heavy metals thus occurring as ash can be taken to further processing, e.g. washing from the synthesis gas produced, using an aqueous washing solution.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: February 27, 2001
    Assignee: Krupp Uhde GmbH
    Inventors: Michael Buxel, Heinz Jochen Keller
  • Patent number: 5866750
    Abstract: A method for recovering titanium and vanadium compounds, such as alkoxides, from a liquid hydrocarbon mixture by hydrolyzing the mixture with a base or acid wash having a sufficiently different density so that two liquid phases form, and separating the two liquid phases.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: February 2, 1999
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Robert Stephen Tomaskovic, Michael Wayne Potter, William Charles Malven
  • Patent number: 5620936
    Abstract: A process is disclosed for converting a spent catalyst from conventional fluorination processes into a commercially useful tantalum or niobium salt such as K.sub.2 TaF.sub.7 or K.sub.2 NbF.sub.7. The process broadly relates to dissolving the spent catalyst in water or an aqueous hydrofluoric acid solution, separating and disposing the undissolved residue, extracting the aqueous solution with a suitable solvent such as methyl isobutyl ketone (MIBK), and obtaining useful tantalum products from the MIBK solution such as a tantalum salt.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: April 15, 1997
    Assignees: E. I. DuPont de Nemours and Company, Cabot Performance Material
    Inventors: Vinci M. Felix, Charles E. Mosheim, Norman A. Carlson
  • Patent number: 5411724
    Abstract: Aluminum can be removed from tetrahedral framework sites of zeolite frameworks and substituted with elements such as silicon, gallium, titanium or zirconium. The process involves three steps:(a) forming a mixture of the ammonium or alkaline metal form of the zeolite in the hydrated state and a crystalline ammonium fluoro-halo-metallate salt;(b) heating the mixture at elevated temperatures to remove the aluminum from the zeolite and to introduce the metal from the salt into the structure of the zeolitic component by solid-state reaction while forming a fluoro-halo-aluminate complex salt; and(c) removing the formed fluoro-halo-aluminate complex salt.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: May 2, 1995
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Herman K. Beyer, Gabriella Pal-Borbely
  • Patent number: 5230876
    Abstract: An apparatus for removing vanadium from phosphoric acid includes a precipitator that receives vanadium-containing process-feed phosphoric acid and adds an oxidant to the process-feed phosphoric acid, whereupon precipitates containing phosphorus and vanadium are formed in a phosphoric acid filter feed slurry. The solid precipitate is removed by a filter. The filtrate, after optional further oxidation, is contacted to an ion exchange resin to remove additional vanadium from the filtrate to produce a phosphoric acid product of reduced vanadium content. A first portion of the phosphoric acid product is removed from the apparatus for further use. A reducing agent is added to a second portion of the phosphoric acid product, and the reduced acid is used to strip vanadium from the loaded ion exchange resin. The vanadium-loaded second portion of the phosphoric acid is mixed with fresh phosphoric acid and fed to the precipitator.
    Type: Grant
    Filed: May 17, 1991
    Date of Patent: July 27, 1993
    Assignee: J. R. Simplot Co.
    Inventors: Klaas J. Hutter, David K. Johnson, Gene Kawakami, Gary Long
  • Patent number: 5209910
    Abstract: Improved solvent extraction recovery of tantalum and niobium oxides from an acid solution of raw materials containing such oxides wherein the charged organic solvent [e.g., MIBK] is washed out (a) with 8-16N sulfuric acid and then (b) with water or dilute HF. This avoids the use of a second mineral acid addition after digestion by HF of raw materials (and avoids problems attendant to use a second mineral acid).
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: May 11, 1993
    Assignee: Hermann C. Starck GmbH & Co. KG
    Inventors: Walter Bludssus, Joachim Eckert
  • Patent number: 5171548
    Abstract: A process for removal of vanadium from wet process phosphoric acid comprising the steps of;(i) adsorbing an anionic pentavalent complex of vanadium, derived from the wet process phosphoric acid, onto an anion exchange resin or into an organic layer; and(ii) reducing the vanadium complex to trivalent and/or tetravalent vanadium so as to selectively strip vanadium from the anion exchange resin or from the organic layer.
    Type: Grant
    Filed: June 6, 1990
    Date of Patent: December 15, 1992
    Assignee: Advanced Separation Technologies Incorporated
    Inventors: Gordon J. Rossiter, Stephen F. Pease, Charles B. Snyder
  • Patent number: 4853205
    Abstract: Process of using supercritical fluid to selectively separate, purify and recover metal halides.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: August 1, 1989
    Assignee: The United states of America as represented by the Secretary of the Interior
    Inventors: William K. Tolley, Alton B. Whitehead
  • Patent number: 4849189
    Abstract: A process for the preparation of pentavalent vanadium compounds from acid extracts obtained by regenerating spent catalysts which contain vanadium, this process comprising the successive steps of (1) oxidizing extracts containing tri- and tetravalent vanadium with an oxygen-containing gas at a pH of at least 0.7 to 1.4 p.sub.o and at most 2.3-1.4 p.sub.o to form a solution of tetravalent vanadium compounds, and (2) continuing the oxidation at a pH lying in the range of from 3.2-1.4 p.sub.o to 2.3-1.4 p.sub.o to form concentrates of pentavalent vanadium having a partial oxygen pressure, 0.05 MPa.
    Type: Grant
    Filed: November 18, 1986
    Date of Patent: July 18, 1989
    Assignee: Shell Internationale Research Maatschappij B.V.
    Inventor: Just J. C. Jansz
  • Patent number: 4548792
    Abstract: A method for precipitating vanadium from vanadium bearing liquors comprises adjusting the pH of the vanadium bearing liquor with a precipitating agent selected from the hydroxides of Na, K and Ca to a range of about 5.5 to 6.5, preferably 6.0 to 6.2 so as to precipitate vanadium in the trivalent and tetravalent states. Remaining traces of vanadium are then cemented by additions of calcium hydroxide, calcium oxide or mixtures thereof. The dried precipitate is then heated in the presence of air and Na and/or K so as to form a reaction product in the form of a water soluble salt which, when dissolved in water, results in vanadium in its pentavalent state.
    Type: Grant
    Filed: March 15, 1984
    Date of Patent: October 22, 1985
    Assignee: Intevep, S.A.
    Inventors: Domingo Rodriguez, Roberto Schemel, Ramon Salazar
  • Patent number: 4544479
    Abstract: Visbreaking of heavy metals containing oil with 5 to 30, preferably 15 to 25 wt % pulverized coal gives good demetallation of oil and produces a solids product with a high metals content suitable for use as a synthetic, metal bearing ore.
    Type: Grant
    Filed: December 1, 1983
    Date of Patent: October 1, 1985
    Assignee: Mobil Oil Corporation
    Inventor: Tsoung-Yuan Yan
  • Patent number: 4526762
    Abstract: Vanadium is recovered from acidic solutions by oxidizing the vanadium with Caro's acid to the pentavalent state and obtaining the oxidized vanadium by solvent extraction.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: July 2, 1985
    Assignee: FMC Corporation
    Inventor: Richard A. Brown
  • Patent number: 4317802
    Abstract: The process relates to the separation of the molybdenum and/or tungsten, titanium, vanadium, niobium or tantalum present in the form of organometallic compounds in residual effluents.It is applicable, in particular, to the effluents originating from the epoxidation of olefins by hydroperoxides.The process involves treating the effluent with from 1 to 10% by weight of water, at between and C. under pressure, to render the metals listed above insoluble, without forming a distinct aqueous phase. The solid phase containing more than 95% of the metals is separated by filtration. After treatment, the effluents can be used without disadvantage, for example as a fuel, and the metals can be recovered from the solid phase.
    Type: Grant
    Filed: November 5, 1980
    Date of Patent: March 2, 1982
    Assignee: Metaux Speciaux
    Inventor: Jacques Dugua
  • Patent number: 4309389
    Abstract: Raw materials containing tantalum or niobium are treated to obtain aqueous solutions containing fluoroacid complexes of niobium or tantalum. These solutions are decomposed by pyrolysis and calcined to obtain pure oxides of niobium or tantalum. The hydrofluoric acid separated during pyrohydrolysis is recovered and reused. A niobium or tantalum-free raffinate solution obtained, on extraction, with the above aqueous solutions contains dissolved metalloids which are recovered as oxides which are deposable waste products.
    Type: Grant
    Filed: July 1, 1980
    Date of Patent: January 5, 1982
    Assignee: Hermann C. Starck Berlin
    Inventor: Horst Meyer
  • Patent number: 4243639
    Abstract: Petroleum coke containing inorganic compounds including vanadium is gasified with steam in the presence of an alkali metal salt gasification catalyst to produce a combustible gas and an inorganic ash composed primarily of said inorganic compounds and a water soluble alkali metal vanadate and the inorganic ash is placed in a sufficient amount of water to dissolve the vanadate compound and then is recovered by conventional means.
    Type: Grant
    Filed: May 10, 1979
    Date of Patent: January 6, 1981
    Assignee: Tosco Corporation
    Inventors: Frank C. Haas, William K. Hesse
  • Patent number: 4164417
    Abstract: The invention disclosed provides a process for recovering niobium values from aqueous hydrofluoric acid solutions by evaporating said solution to dryness and baking the residue at temperatures of to C. The solid residue is niobium oxyfluroide (NbO.sub.2 F) which may then be exothermically reduced with aluminum in the presence of an alloying element such as iron, nickel, or chromium to produce a niobium alloy. The evaporated hydrofluoric acid may be recovered by condensing or absorbing the evolved vapors.
    Type: Grant
    Filed: April 28, 1978
    Date of Patent: August 14, 1979
    Assignee: Kawecki Berylco Industries, Inc.
    Inventor: Robert A. Gustison
  • Patent number: 4150092
    Abstract: The present invention provides a method for recovering vanadium from ferruginous chloride solutions by liquid-liquid extraction (or liquid ion exchange). Such chloride solutions are obtained in the extraction of vanadium from vanadiferous residues arising from the chlorination of titaniferous ores and in the extraction of vanadium from vanadiferous minerals. These solutions contain chlorides of vanadium, aluminum, iron, manganese and chromium. The method comprises adding sulfate ions to the chloride solution and recovering the vanadium by liquid-liquid extraction. By adjusting the sulfate-additive in relation to the concentrations of vanadium, iron and chloride in the solution vanadium can be exhausted substantially free from iron.
    Type: Grant
    Filed: October 21, 1977
    Date of Patent: April 17, 1979
    Assignee: Engelhard Minerals & Chemicals Corporation
    Inventor: Frank Pitts
  • Patent number: 4126663
    Abstract: A process for the recovery of vanadium from acid sulfate solutions such as those derived by sulfuric acid leaching of industrial residues such as spent hydrodesulfurization catalysts, fly ash and furnace bottom ash in which magnesium oxide, hydroxide or carbonate is used as the neutralizing agent.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: November 21, 1978
    Assignee: Engelhard Minerals & Chemicals Corporation
    Inventor: Frank Pitts
  • Patent number: 4110398
    Abstract: A process for the separation of a low metals content organic material from an easily calcinable solid material, effected by treating a low-melting solid material, resulting from the refining of a hydrocarbon crude oil, with naphtha at an elevated temperature and pressure whereby the resulting solid material, after separation of the liquid organic material, is in condition to be readily calcinable.
    Type: Grant
    Filed: April 8, 1977
    Date of Patent: August 29, 1978
    Assignee: UOP Inc.
    Inventors: Charles W. Selvidge, Kenneth A. Morgan, Robert R. Frame
  • Patent number: 4069268
    Abstract: Deactivated or partially deactivated hydrocarbon conversion catalysts comprising (a) one or more Lewis acids of the formula MX.sub.n where M is a component selected from Group IIIA, IVB, V, VIB or VIII Elements of the Periodic Table or their mixtures, X is a halogen, and n is the atomic ratio of halogen to M and varies from 1 to 8, and (b) a strong Bronsted acid, may be regenerated by contacting said catalysts with a halogen selected from the group consisting of fluorine or chlorine. If a portion of the catalyst has been hydrolyzed, the catalyst may be regenerated via halogenation as above or by contact with a hydrogen halide selected from the group consisting of hydrogen fluoride or hydrogen chloride and then fluorine. The preferred Lewis acid is a metal halide, preferably tantalum pentafluoride, niobium pentafluoride or mixtures thereof. The preferred Bronsted acid is a hydrogen halide, preferably hydrogen fluoride.
    Type: Grant
    Filed: November 4, 1975
    Date of Patent: January 17, 1978
    Assignee: Exxon Research & Engineering Co.
    Inventors: Michael Siskin, Ronald J. Gillespie
  • Patent number: 4065405
    Abstract: Tantalum and/or niobium pentafluorides may be recovered from a deactivated or partially deactivated hydrocarbon conversion catalyst comprising (a) a metal pentafluoride selected from the group consisting of tantalum pentafluoride, niobium pentafluoride and mixtures thereof and (b) hydrogen fluoride, by distilling said catalyst in the presence of a Lewis acid containing neither of these Group V metals, thereby displacing a pentahalide of tantalum and/or niobium into the vapor phase from which it can be condensed. Addition of hydrogen fluoride then converts the pentahalide to the pentafluoride.
    Type: Grant
    Filed: December 3, 1976
    Date of Patent: December 27, 1977
    Assignee: Exxon Research and Engineering Company
    Inventor: Roger Hulme
  • Patent number: 4061711
    Abstract: Vanadium values may be recovered by leaching a vanadium bearing material in which the vanadium is present as an oxide in its highest valence state in an ammoniacal medium at elevated temperatures and pressures followed by separation of the soluble ammonium metavanadate, precipitation and further separation to recover the desired vanadium values.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: December 6, 1977
    Assignee: UOP Inc.
    Inventors: Kenneth A. Morgan, Robert R. Frame
  • Patent number: 3983208
    Abstract: An aqueous nitric acid solution derived from an adipic acid process containing copper and vanadium catalyst values and alkyl dicarboxylic acids is treated to remove the nitric acid and water therefrom so as to obtain a substantially dry, molten-type residue. This residue is mixed with a dialkyl ketone solvent which dissolves the dicarboxylic acids and leaves the catalyst metal values as solids.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: September 28, 1976
    Assignee: Celanese Corporation
    Inventor: Jorge A. Blay