Carbonating Patents (Class 423/209)
  • Patent number: 10968144
    Abstract: Systems and methods for producing potassium sulfate. Such a method involves providing an industrial waste material that includes at least one metal sulfate or a metal product that has been reacted with sulfuric acid to produce metal sulfates, and then reacting the metal sulfate with potassium carbonate to produce a byproduct that contains potassium sulfate.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: April 6, 2021
    Assignee: Marsulex Environmental Technologies Corporation
    Inventors: Michael L. Mengel, Michael T. Hammer, Barry W. Stolzman
  • Publication number: 20140205521
    Abstract: The invention generally relates to system and method for recovering sodium bicarbonate from a solid waste, and more particularly to a method and system for recovering sodium bicarbonate from fly ash of a coal fired plant collected downstream of an injection process for pollution reduction from the industrial process.
    Type: Application
    Filed: August 2, 2013
    Publication date: July 24, 2014
    Applicant: Neumann Systems Group, Inc.
    Inventors: David Kurt Neumann, Claire MacLeod Ohman, Eric John Klein, Jean-Philippe Feve
  • Patent number: 8784756
    Abstract: A process for the joint production of sodium carbonate and sodium bicarbonate out of trona, comprising: introducing and dissolving crushed trona ore in a leaching tank containing a solution comprising sodium carbonate and sodium bicarbonate, saturated in sodium bicarbonate, in order to produce solid particles suspended in a production solution comprising sodium carbonate, the solid particles containing insoluble impurities and at least 65% in weight of sodium bicarbonate; separating the solid particles from the production solution containing sodium carbonate; drying and valorizing the separated solid particles; taking at least part of the production solution containing sodium carbonate out of the leaching tank in order to constitute a produced solution which is valorized; and introducing water in the leaching tank.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: July 22, 2014
    Assignee: Solvay SA
    Inventors: Jean-Paul Detournay, Francis M. Coustry, Perrine Davoine
  • Patent number: 8679429
    Abstract: A hexagonal boron nitride (h-BN) powder is disclosed in which primary particles of the powder exhibit a ratio (D/d) of long diameter (D) to thickness (d) in a range of 5 to 10. Agglomerated particle bodies made of the primary particles have an average particle diameter (D50) in a range of 2 ?m to 200 ?m, inclusive, and the powder has a bulk density in a range of 0.5 g/cm3 to 1.0 g/cm3. In an exemplary method for producing the h-BN, boron carbide is nitridizated in a nitrogen partial pressure of at least 5 kPa at 1800° C. to 2200° C., inclusive. B2O3 (or precursor thereof) is added to the nitridization product to produce a mixture. The mixture is decarbonized in a non-oxidizing atmosphere at a 1500° C. to 2200° C., inclusive. The decarbonization product is pulverized and subject to particle-size classification, yielding H-BN powder. The method includes a depressurizing step, performed at 100 kPa or less either during nitridization or after decarbonization.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: March 25, 2014
    Assignee: Mizushima Ferroalloy Co., Ltd.
    Inventors: Taisei Gohara, Takahisa Koshida, Shoichi Hiwasa
  • Patent number: 8603420
    Abstract: The invention enables processing waste sludge after galvanic treatment of metals, and particularly recycling spent pickling acids after pickling. Provided is an environmentally friendly process, which yields acids for reuse, and pure nano-sized iron pigments as a side product.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: December 10, 2013
    Assignee: Green Future Ltd.
    Inventors: Vladimir Boiko, Reuben Schapiro
  • Patent number: 8398951
    Abstract: In one embodiment of the present disclosure, a composite electrode for a battery is provided. The composite electrode includes silver vanadium oxide present in an amount from about 75 weight percent to about 99 weight percent and polypyrrole present in an amount from about 1 weight percent to about 25 weight percent.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: March 19, 2013
    Assignee: University of South Carolina
    Inventors: Branko N. Popov, Jong-Won Lee
  • Patent number: 8057764
    Abstract: Methods and apparatus for the production of low sodium lithium carbonate and lithium chloride from a brine concentrated to about 6.0 wt % lithium are disclosed. Methods and apparatus for direct recovery of technical grade lithium chloride from the concentrated brine are also disclosed.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: November 15, 2011
    Assignee: Chemetall Foote Corporation
    Inventors: Daniel Alfred Boryta, Teresita Frianeza Kullberg, Anthony Michael Thurston
  • Patent number: 7255841
    Abstract: A method of producing sodium bicarbonate having a high degree of purity and obtaining a net reduction in effluent waste water, as compared to prior processes, when starting from trona ore is disclosed. The process entails utilizing the waste-water effluent stream from the conversion of trona ore to sodium carbonate as the feed for the conversion of sodium carbonate to sodium bicarbonate.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: August 14, 2007
    Assignee: Church & Dwight Co., Inc.
    Inventor: Andrew D. Kurtz
  • Patent number: 7214355
    Abstract: Metal carbonates that are insoluble in water but that have a corresponding metal biocarbonate salt that is more than 75% by weight soluble in water are purified by preparing an aqueous slurry of the metal carbonate: introducing carbon dioxide gas to form a corresponding metal biocarbonate solution and heating that solution to form a purified metal carbonate and precipitate it.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: May 8, 2007
    Assignee: Chemetall Foote Corporation
    Inventors: Daniel Alfred Boryta, Teresita Frianeza Kullberg, Anthony Michael Thurston
  • Patent number: 7214290
    Abstract: In the methods for treatment of caustic effluents described in the specification, a spent caustic refinery effluent is supplied to a submerged combustion gas evaporator in which hot combustion gas containing carbon dioxide is injected into the caustic liquid to concentrate the liquid and convert a hydroxide constituent to a carbonate. Where the caustic effluent is from a petroleum refinery, oil in the waste liquid is separated from the aqueous constituent before, during or after concentration.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: May 8, 2007
    Assignees: Shaw Liquid Solutions LLC., GEI Liquid Solutions LLC.
    Inventors: Bernard F. Duesel, Jr., John P. Gibbons, Michael J. Rutsch
  • Patent number: 7192564
    Abstract: The method relates to a pyrometallurgical and hydrometallurgical process for the recovery and recycling of lithium and vanadium compounds from a material comprising spent rechargeable lithium batteries, particularly lithium metal gel and solid polymer electrolyte rechargeable batteries. The method involves providing a mass of the material, hardening it by cooling at a temperature below room temperature, comminuting the mass of cooled and hardened material, digesting with an acid its ashes obtained by incineration, or its solidified salts obtained by molten salt oxidation, or the comminuted mass itself, to give a mother liquor, extracting vanadium compounds from the mother liquor, separating heavy metals and aluminium therefrom, and precipitating lithium carbonate from the remaining solution.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: March 20, 2007
    Assignee: Avestor Limited Partnership
    Inventors: Francois Cardarelli, Jonathan Dube
  • Patent number: 7157065
    Abstract: A continuous process for directly preparing high purity lithium carbonate from lithium containing brines by preparing a brine containing about 6.0 wt % lithium and further containing other ions naturally occurring in brines; adding mother liquor containing carbonate to precipitate magnesium; adding a solution of CaO and sodium carbonate to remove calcium and any residual magnesium; precipitating lithium carbonate from the purified brine by adding soda ash solution; filtering to obtain solid lithium carbonate; preparing an aqueous slurry of the lithium carbonate and introducing carbon dioxide gas at a temperature from at least minus 10 to +40° C.; passing the lithium bicarbonate solution through a filter to clarify the solution; introducing said filtered lithium bicarbonate solution into a reactor and adjusting the temperature of the solution to from 60–100° C. to precipitate ultra-pure lithium carbonate.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: January 2, 2007
    Assignee: Chemetall Foote Corporation
    Inventors: Daniel Alfred Boryta, Teresita Frianeza Kullberg, Anthony Michael Thurston
  • Patent number: 6589497
    Abstract: A method for producing high grade soda ash from a solution mined brine containing sodium bicarbonate by processing the mine brine through a monohydrate crystallization step to the final product is described. The mine brine is treated to decompose and thereby convert sodium bicarbonate to sodium carbonate and to concentrate the sodium carbonate to a concentration such that a feed liquor is formed which is suitable for crystallizing sodium carbonate monohydrate crystals of high purity from the feed liquor. The sodium carbonate monohydrate crystals recovered from the process are converted to soda ash by known techniques.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: July 8, 2003
    Assignee: FMC Wyoming Corporation
    Inventor: David E. Smith
  • Publication number: 20020192140
    Abstract: A method for producing high grade soda ash from a solution mined brine containing sodium bicarbonate by processing the mine brine through a monohydrate crystallization step to the final product is described. The mine brine is treated to decompose and thereby to convert sodium bicarbonate to sodium carbonate and to concentrate the sodium carbonate to a concentration such that a feed liquor is formed which is suitable for crystallizing sodium carbonate monohydrate crystals of high purity from the feed liquor. The sodium carbonate monohydrate crystals recovered from the process are converted to soda ash by known techniques.
    Type: Application
    Filed: June 13, 2001
    Publication date: December 19, 2002
    Inventor: David E. Smith
  • Patent number: 6403045
    Abstract: A method for treating residues derived from garbage and/or industrial waste incineration fumes including the steps of desalting the residues by washing with sodium carbonate in sufficient amount or slightly in excess to solubilize all the salts including the sulphates and precipitate the soluble calcium, the pH being higher than 11, then carrying out a solid/liquid separation to obtain a desalinated cake; leaching the desalinated cake with sodium carbonate in sufficient amount or slightly in excess to obtain, by reaction with the lime present in the cake or added thereto if necessary, the alkalinity required for solubilising amphoteric metals, the pH being higher than 12, and obtaining by solid/liquid separation a cake and a supernatant which is neutralised with carbon dioxide, and filtering the recovered solution to obtain metal hydroxide sludge and an aqueous sodium carbonate solution; and neutralising the resulting residues at a pH between 6.5 and 8.5.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: June 11, 2002
    Assignee: FIBAC
    Inventors: Daniel Daviller, Laurent Rizet
  • Patent number: 5684071
    Abstract: An additive having an improved dispersibility or adhesion property to thermoplastic resins and useful for imparting an excellent flame resistance and other properties thereto without deteriorating properties that the thermoplastic resins originally possess, such as mechanical, electrical and thermal properties and molding processability, which comprises a nitrogen-containing heterocyclic compound or its salt surface-treated with 0.1 to 50% by weight of a compound having at least two functional groups such as epoxy resin, acid anhydride or the like; and a flame retardant polyester resin composition comprising (A) a thermoplastic polyester, (B) a nitrogen-containing heterocyclic compound or its salt, (C) a compound having at least two functional groups and optionally (D) a phosphorus based flame retarder, which may be prepared by adding the component (B) previously surface-treated with the component (C) or separately adding the components (B) and (C) to the polyester (A).
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: November 4, 1997
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kenji Mogami, Masaaki Nakamura, Tadashi Koyama, Tomomi Nakashima, Akiyoshi Somemiya
  • Patent number: 5637192
    Abstract: Resonant tubes of a pulse combustor are immersed in a bed of solid particles in a reaction zone to provide indirect heat from the pulsating combustion gases to the solid particles of the bed. The bed is maintained in an agitated state by a gas or vapor flowing through the bed. Reactant materials are introduced into the agitated bed and undergo reaction at enhanced rates resulting from heat transfer coefficients at least about twice as high as those of steady flow combustors and an intense acoustic pressure level propagated from the pulsating combustor into the reaction zone. The apparatus is useful, for example, to steam reform heavy hydrocarbons and to gasify carbonaceous material, including biomass and black liquor to produce combustible gas at relatively low temperatures, with steam being utilized as the bed fluidizing medium. Black liquor gasification, utilizing sodium carbonate as bed solids, results in liquor energy and chemical content recovery without smelt production.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: June 10, 1997
    Assignee: Manufacturing and Technology Conversion International
    Inventors: Momtaz N. Mansour, Kanda-Swamy Durai-Swamy, David W. Warren
  • Patent number: 5575922
    Abstract: A method for treating mine water from an underground trona ore mine comprising pumping the mine water from the mine, introducing caustic soda into the mine water, maintaining the pH of the treated mine water to between about 11.5 and about 14, separating the treated mine water and introducing the treated mine water into an alkali production process.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: November 19, 1996
    Assignee: Solvay Minerals, Inc.
    Inventors: Kevin L. Green, Robert N. Skogley
  • Patent number: 5238664
    Abstract: Process for disposing of insoluble tailings that remain when solubilizing uncalcined or calcined trona in the process of producing soda ash, in which the tailings are slurried with water or waste solutions of sodium carbonate and/or sodium bicarbonate, adding an alkali metal hydroxide or alkaline earth metal hydroxide in effective amounts up to about 10% by weight of the aqueous slurrying solution, pumping the slurry into a well connected to an underground mined-out cavity with sufficient pressure to prevent build-up of tailings from plugging the bottom of the well opening, dispersing and settling said tailings in the cavity, removing a liquor from said cavity whose concentration of sodium carbonate and/or sodium bicarbonate has been increased and recovering such enriched liquor for use in the manufacture of sodium-containing chemicals such as soda ash.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: August 24, 1993
    Assignee: FMC Corporation
    Inventors: William R. Frint, Michael M. Bithell, William G. Fischer
  • Patent number: 5219550
    Abstract: The present invention relates to a novel process for producing, from a lithium-containing brine, a low boron lithium carbonate compound. This compound is particularly useful for conversion to a highly pure lithium chloride for the production of lithium metal by electrolysis.
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: June 15, 1993
    Assignee: Cyprus Foote Mineral Company
    Inventors: Patrick M. Brown, Daniel A. Boryta
  • Patent number: 5219541
    Abstract: Disclosed is a method of producing sodium hydroxide comprising the steps of: (a contacting trona ore and sodium hydroxide under conditions suitable to form sodium carbonate; (b) removing essentially all solids larger than 32 mesh from the sodium carbonate product of step (a); (c) contacting the sodium carbonate product of step (b) and calcium hydroxide in the presence of a suitable amount of seed crystal calcium carbonate with crystal size in the range of about 1 to about 10 microns, and under conditions suitable to form aqueous sodium hydroxide and calcium carbonate crystals with crystal size in the range of about 30 to about 50 microns; and (d) recovering aqueous NaOH from the reaction product of step (c). The seed crystals may be introduced from an external source, or made insitu in the lime slaker by the addition of a small amount of sodium carbonate into the lime slaker.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: June 15, 1993
    Assignee: Tenneco Minerals Company
    Inventor: Vladimir M. Zolotoochin
  • Patent number: 4913736
    Abstract: A process for recovering Platinum Group metals from material comprising one or more Platinum Group metals and one or more Group IA metals supported on carbon comprises heating at a temperature between 700.degree. C. and 1150.degree. C. in a stream of an inert gas or vacuum then in a stream of carbon dioxide.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: April 3, 1990
    Assignee: The British Petroleum Company p.l.c.
    Inventor: Edmund Gimzeski
  • Patent number: 4769116
    Abstract: The invention relates to a hydrometallurgical process for the overall recovery of the components of exhausted lead-acid batteries, in a re-useable form, said components being mainly constituted by such materials as polypropylene, ebanite, PVC; by paste comprising lead sulphatized compounds; and by pure or alloyed metal lead, characterized in that it comprises the following steps:(a) battery crushing,(b) separation of paste by wet-screening,(c) separation of polypropylene by water floating,(d) separation of ebanite and PVC from pure or alloyed metal lead, by means of a first hydrodynamic separation,(e) separation of ebanite from PVC by a second hydrodynamic separation,(f) desulfurization of paste by carbonation by sodium carbonate, with pure sodium sulphate being obtained,(g) recovery of so-obtained pure sodium sulphate,(h) treatment of carbonated paste in order to recovery from it the lead, in pure metal form, by extraction by electrowinning.
    Type: Grant
    Filed: January 8, 1987
    Date of Patent: September 6, 1988
    Assignee: Engitec Impianti S.p.A.
    Inventors: Marco Olper, Pierluigi Fracchia
  • Patent number: 4664893
    Abstract: A process for the dry carbonation of an alkali metal or ammonium carbonate, utilizing a low carbon dioxide-containing carbonating gas stream, and more particularly, a process for the production of a bicarbonate sorbent useful in the desulfurization of flue gases from the low carbon dioxide-content flue gases themselves.
    Type: Grant
    Filed: April 4, 1985
    Date of Patent: May 12, 1987
    Assignee: Church and Dwight Co., Inc.
    Inventors: James S. Sarapata, Raymond Shaffery
  • Patent number: 4459272
    Abstract: A process for the dry carbonation of an ammonium or alkali metal carbonate containing material, or a mixture thereof, for conversion to the corresponding bicarbonate containing material comprising reacting in the solid phase an ammonium and/or alkali metal carbonate containing material with liquid water in a carbon dioxide rich atmosphere at a particle temperature of from about 125.degree. F. to about 240.degree. F. for a period of time sufficient to effect the desired conversion of the carbonate groups of said carbonate containing material to bicarbonate groups, the reaction temperature being controlled by the evaporation of liquid water at the reaction site and the removal of the resulting water vapor from the reactor atmosphere.
    Type: Grant
    Filed: April 26, 1983
    Date of Patent: July 10, 1984
    Assignee: Church & Dwight Co., Inc.
    Inventors: John P. Krieg, Anthony E. Winston
  • Patent number: 4322391
    Abstract: A stable, microcrystalline form of cisplatin, a process for its preparation, and stable, sterile dry-mix formulations thereof which are more rapidly reconstituted with sterile water to produce solutions suitable for intravenous administration to man than are similar formulations containing "regular" cisplatin. The microcrystalline cisplatin and dry-mix formulations thereof are prepared without the use of lyophilization.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: March 30, 1982
    Assignee: Bristol-Myers Company
    Inventors: Murray A. Kaplan, Alphonse P. Granatek
  • Patent number: 4225565
    Abstract: In the treating of waste slags produced in the desulfurization and/or dephosphorization of molten pig iron with alkali carbonates, the alkali is recovered by extracting said waste slags with hot water while feeding carbon dioxide gas to form an extraction solution having a pH of 9.0-11.5 and recovering alkali carbonates from said extraction solution. The extraction solution contains little sulphur and silicates, from which alkali carbonates can be easily recovered with high yield therefrom.
    Type: Grant
    Filed: January 25, 1979
    Date of Patent: September 30, 1980
    Assignees: Tokuyama Soda Company Limited, Sumitomo Metal Industries Limited
    Inventors: Katsukiyo Marukawa, Setsuo Okamoto, Kazunari Yamada, Masahisa Iba