Hydrogen Halide Patents (Class 423/481)
  • Patent number: 10081553
    Abstract: A method comprising (a) reacting aluminum metal with an acid in the presence of water to provide a first aluminum salt solution comprising an aluminum salt in water, wherein the aluminum salt comprises a reaction product of the acid and the aluminum metal, (b) heating the first aluminum salt solution to provide a mother liquor and solid aluminum salt, (c) optionally, separating the solid aluminum salt from the mother liquor, (d) optionally, dissolving at least a portion of the separated solid aluminum salt with water to provide a second aluminum salt solution, (e) spray roasting the first, or second (if produced), aluminum salt solution to provide an aluminum oxide powder, and (f) washing the aluminum oxide powder, wherein the washed aluminum oxide powder comprises less than about 30 ppmw total metallic and alkyl impurities.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: September 25, 2018
    Assignee: POLAR SAPPHIRE, LTD.
    Inventors: Scott Nichol, Daniel Smith
  • Patent number: 8968697
    Abstract: The present invention discloses a method for thermochemical production of hydrogen and oxygen from water by a low temperature, multi-step, closed, cyclic copper-chlorine (Cu—Cl) process involving the reactions of copper and chlorine compounds. A method for production of hydrogen via Cu—Cl thermochemical cycle consists of four thermal reactions and one electrochemical reaction and one unit operation. The cycle involves six steps: (1) hydrogen production step; (2) copper production step; (3) drying step; (4) hydrogen chloride production step; (5) decomposition step; (6) oxygen production step. The net reaction of the sequential process is the decomposition of water into hydrogen and oxygen. The methods for production of copper oxide which comprises contacting copper chloride particles with superheated steam and production of oxygen comprises reaction of copper oxide with dry chlorine as a part of hydrogen production by thermochemical Copper-Chlorine (Cu—Cl) cycle.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: March 3, 2015
    Assignees: Institute of Chemical Technology, ONGC Energy Centre Trust Oil and Natural Gas Corporation Limited (ONGC)
    Inventors: Yadav Ganapati Dadasaheb, Parhad Prakash Santoshrao, Nirukhe Ashwini Bhagavan, Parvatalu Damaraju, Bhardwaj Anil, Prabhu Bantwal Narayana, Thomas Nuzhath Joeman, Kale Dilip Madhusudan
  • Publication number: 20150034500
    Abstract: A metal organic framework (MOF) includes a coordination product of a metal ion and an at least bidentate organic ligand, where the metal ion and the organic ligand are selected to provide a deliverable adsorption capacity of at least 70 g/l for an electronic gas. A porous organic polymer (POP) includes polymerization product from at least a plurality of organic monomers, where the organic monomers are selected to provide a deliverable adsorption capacity of at least 70 g/l for an electronic gas.
    Type: Application
    Filed: August 4, 2014
    Publication date: February 5, 2015
    Inventors: Han Sung KIM, Mitchell Hugh WESTON, Patrick FULLER, Paul Wai-Man SIU
  • Publication number: 20140319040
    Abstract: A system includes an ion separation unit that may receive dilute hydrochloric acid and may generate a concentrated hydrochloric acid and a chamber fluidly coupled to the ion separation unit. The chamber may receive the concentrated hydrochloric acid and may separate the concentrated hydrochloric acid into a liquid concentrated hydrochloric acid and a vapor containing vaporized hydrochloric acid. The system also includes a scrubber fluidly coupled to the chamber. The scrubber may receive the vapor from the chamber, and the scrubber is may remove at least a portion of the vaporized hydrochloric acid from the vapor via a purified condensate to generate a purified vapor and the dilute hydrochloric acid. The system also includes a condenser fluidly coupled to the scrubber The condenser may receive the purified vapor from the scrubber to condense the purified vapor into the purified condensate, and to output the purified condensate to the scrubber.
    Type: Application
    Filed: April 28, 2014
    Publication date: October 30, 2014
    Applicant: Enviro Water Minerals Company, Inc.
    Inventor: Paul Steven Wallace
  • Patent number: 8834830
    Abstract: A method for completely reducing an inorganic halide to obtain a non-halogen inorganic substance and/or hydride thereof and preferably anhydrous hydrogen halide fluid using inorganic halide substances, such as sulfur hexafluoride, nitrogen trifluoride, tungsten hexafluoride, uranium hexafluoride and others by reduction with a reducing agent at a proper temperature. The reducing agents may be molecular hydrogen, inorganic hydrides and inorganic metallic elements; molecular hydrogen is preferable, but in certain instances the inorganic hydrides are used, as well as inorganic metallic elements such as calcium and magnesium.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: September 16, 2014
    Assignee: Midwest Inorganics LLC
    Inventor: Gregorio Tarancon, III
  • Publication number: 20140113811
    Abstract: Provided are methods for storing gases on porous adsorbents, methods for optimizing the storage of gases on porous adsorbents, methods of making porous adsorbents, and methods of gas storage of optimized compositions, as in systems containing porous adsorbents and gas adsorbed on the surface of the porous adsorbent. The disclosed methods and systems feature a constant or increasing isosteric enthalpy of adsorption as a function of uptake of the gas onto the exposed surface of a porous adsorbent. Adsorbents with a porous geometry and surface dimensions suited to a particular adsorbate are exposed to the gas at elevated pressures in the specific regime where n/V (density) is larger than predicted by the ideal gas law by more than several percent.
    Type: Application
    Filed: October 10, 2013
    Publication date: April 24, 2014
    Inventors: Nicholas P. STADIE, Brent T. FULTZ, Channing AHN, Maxwell MURIALDO
  • Patent number: 8647493
    Abstract: The present disclosure is a system and method for producing a first product from a first region of an electrochemical cell having a cathode and a second product from a second region of the electrochemical cell having an anode. The method may include a step of contacting the first region with a catholyte comprising carbon dioxide. The method may include another step of contacting the second region with an anolyte comprising a recycled reactant. The method may include a step of applying an electrical potential between the anode and the cathode sufficient to produce a first product recoverable from the first region and a second product recoverable from the second region. The second product may be removed from the second region and introduced to a secondary reactor. The method may include forming the recycled reactant in the secondary reactor.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: February 11, 2014
    Assignee: Liquid Light, Inc.
    Inventors: Kyle Teamey, Jerry J. Kaczur
  • Publication number: 20140037534
    Abstract: This invention describes the preparation of additive material and its application in the cigarette of tobacco. This material is titanate nanotube and was synthesized by using a hydrothermal route. Titanate nanotube can be used as additive material in the cigarette of tobacco and the harmful compounds in the mainstream cigarette smoke can be removed significantly.
    Type: Application
    Filed: April 16, 2012
    Publication date: February 6, 2014
    Inventor: Qixin Deng
  • Patent number: 8642005
    Abstract: A method for producing hydrogen via a thermochemical route from water, based on the cerium-chlorine cycle is provided. The method comprises, according to a first reaction scheme, the following reactions: H2O+Cl2=2HCl+½O2;??(A) 8HCl+2CeO2=2CeCl3+Cl2+4H2O;??(B) 2CeCl3+4H2O=2CeO2+6HCl+H2;??(C) or, according to a second reaction scheme, the following reactions: H2O+Cl2=2HCl+½O2;??(A) 8HCl+2CeO2=2CeCl3+Cl2+4H2O;??(B) 2CeCl3+2H2O=2CeOCl+4HCl;??(B?) 2CeOCl+2H2O=2CeO2+2HCl+H2;??(C?) wherein the reaction (B) for chlorination of cerium oxide is conducted in a liquid phase, the cerium chloride passing into solution, and wherein the reaction (B) is catalyzed by fluoride ions.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: February 4, 2014
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Florent Lemont, Alizée Barbier-Maderou
  • Publication number: 20130272952
    Abstract: A method of producing hydrogen chloride, or an aqueous solution thereof, includes the steps: a) furnishing a first electrolyte containing chloride ions; b) carrying out an electrodialysis, wherein the first electrolyte is subjected to a cathodic reduction resulting in a catholyte, wherein the concentration of chloride ions drops in the first electrolyte, the concentration of hydroxide ions increases in the first electrolyte, and a product in the form of hydrogen chloride or an aqueous solution thereof is produced; c) processing of at least a partial quantity of the catholyte, resulting in the first electrolyte, wherein an untreated saline water is used, the concentration of chloride ions increases in the catholyte and the concentration of hydroxide ions drops in the catholyte; and d) at least partial reuse of the catholyte processed according to step c) as the first electrolyte in step b).
    Type: Application
    Filed: August 27, 2010
    Publication date: October 17, 2013
    Applicant: WME GESELLSCHAFT FUR WINDKRAFTBETRIEBENE MEERWASSERENTSALZUNG mbH
    Inventor: Rainer Huss
  • Publication number: 20130209582
    Abstract: To propose a health food or a drug, which comprises an iodine compound as a substitute for organic iodine and can exert a similar effect as organic iodine. To propose a method for producing a liquid to be used as a starting material for the aforesaid health food or drug. A health food and a drug each containing hydrogen iodide as the active ingredient. A method for producing a hydrogen iodide-containing solution, which comprises: an alkaline ion water preparation step for preparing alkaline ion water containing hydrogen peroxide; a sodium hydroxide production step for adding sodium to the alkaline ion water and thus producing sodium hydroxide; and a hydrogen iodide production step for, after the sodium hydroxide production step, adding iodine to the alkaline ion water and thus producing hydrogen iodide.
    Type: Application
    Filed: September 27, 2010
    Publication date: August 15, 2013
    Inventor: Kazuyoshi Sato
  • Patent number: 8506925
    Abstract: Disclosed herein is an iodine-sulfur cycle for nuclear hydrogen production, which can improve thermochemical efficiency.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: August 13, 2013
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Hee C. No, Byung J. Lee
  • Publication number: 20130142716
    Abstract: The invention relates to a method adapted for integration with a carbonate absorption/stripping process for removal of carbon dioxide, the method and system including the steps of: converting a source of alkali from a first industry to a non-carbonate alkali; feeding the non-carbonate alkali as makeup to a carbonate absorption system for stripping carbon dioxide from emissions from a second industry; recovering an output from the system for stripping carbon dioxide, and in the process of conversion of the alkali from the first industry, utilising energy from the second industry.
    Type: Application
    Filed: July 15, 2011
    Publication date: June 6, 2013
    Applicant: REDEEM CCS PTY LTD
    Inventor: Barry Neil Hooper
  • Publication number: 20130079552
    Abstract: The present invention relates to a novel graphene oxide reducing agent and a method for manufacturing a reduced graphene oxide from graphene oxide using same. More particularly, in the present invention, the reduced graphene oxide is manufactured by reducing a graphene oxide using a reducing agent containing a halogen element, and is applicable as an electric conductor, a semiconductor, and an insulator in various fields.
    Type: Application
    Filed: September 1, 2010
    Publication date: March 28, 2013
    Inventors: Hyo Young Lee, In Kyu Moon, Jung Hyun Lee
  • Publication number: 20120295812
    Abstract: The invention provides a method for extracting a Staphylococcus aureus antigen which comprises using an extraction reagent with a pH of no higher than 5.0, containing one or more acids selected from among hydrochloric acid, acetic acid, citric acid, phosphoric acid, sulfuric acid and nitric acid, to extract a Staphylococcus aureus antigen comprising a methicillin-resistant Staphylococcus aureus antigen and/or a methicillin-sensitive Staphylococcus aureus antigen, from Staphylococcus aureus in a specimen. The invention further provides a method for assessing Staphylococcus aureus.
    Type: Application
    Filed: December 22, 2010
    Publication date: November 22, 2012
    Inventor: Kazuki Shiga
  • Patent number: 8268284
    Abstract: A system (100) of the present invention for producing an iodine compound includes: a raw material adjusting unit (1) for supplying hydrogen-containing gas to at least one of liquid iodine in an iodine melting pot (4) and gaseous iodine obtained by evaporating liquid iodine so as to obtain a mixture gas; a hydrogen iodide producing unit (10) including a hydrogen iodide producing tower (12) having a catalyst layer (12a) for converting the introduced mixture gas into crude hydrogen iodide gas; a hydrogen iodide refining unit for removing unreacted iodine from the introduced crude hydrogen iodide gas so as to obtain hydrogen iodide gas; and an iodine compound producing unit (30) for producing a target iodine compound from the obtained hydrogen iodide gas and a reaction material. This allows producing an iodine compound with high purity easily, efficiently, and with low cost.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: September 18, 2012
    Assignee: Nippoh Chemicals Co., Ltd.
    Inventors: Satoshi Kanbe, Kazumi Hosono, Masahiro Wada
  • Patent number: 8163092
    Abstract: A method for producing concentrated HCl vapor from an aqueous solution of HCl, including: (a) introducing an aqueous feed liquor to an evaporation chamber containing a mother liquor, the feed liquor having an initial, super-azeotropic HCl concentration; (b) directly contacting a liquor of these liquors with a heat-laden heat transfer fluid, to transfer heat from the fluid; (c) utilizing the heat to evaporate HCl, within the chamber, to produce the concentrated HCl vapor and to produce the mother liquor, the mother liquor including an aqueous phase having a reduced concentration of HCl, with respect to the initial HCl concentration; (d) subjecting the mother liquor to a liquid-liquid separation to produce a liquid phase containing HCl, and another liquid phase containing the heat transfer fluid in a heat-depleted state, with respect to the heat transfer fluid in step (b); (e) heating the heat transfer fluid in the heat-depleted state, to regenerate the heat-laden heat transfer fluid, and (f) returning this hea
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: April 24, 2012
    Assignee: HCL Cleantech Ltd.
    Inventors: Avraham Baniel, Robert Jansen
  • Patent number: 8071067
    Abstract: Processes for forming ferric chloride solutions that are stable at relatively low temperatures and suitable for transportation without precipitation are provided. The stable ferric chloride solutions have an iron content of about 16 to about 23 weight percent and a hydrochloric acid content of about 11 to about 17 weight percent, wherein the ferric chloride solution is a stable solution and/or reversibly freezes at ?10° C. Also disclosed are processes for reconstituting the stable ferric chlorides solutions to provide a final iron content of 10 to 14 weight percent and lower the concentration of hydrochloric acid contained therein.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: December 6, 2011
    Assignee: Kemira Water Solutions, Inc.
    Inventors: Krister Eskilsson, Jeff Campbell, Stig Gunnarsson, Jan Pavlicek
  • Publication number: 20110198285
    Abstract: A desalination and minerals extraction process includes a desalination facility fluidly coupled to a minerals extraction facility. The desalination facility includes a nanofiltration membrane section producing a first tailings stream and a reverse osmosis membrane section producing a second tailings stream and a desalinated water outlet stream from an inlet feed stream. The extraction facility produces at least one mineral compound, an extraction tailings stream, and a second desalinated water outlet stream. At least one of the first tailings stream and the second tailings stream is fed into the extraction facility. In certain exemplary embodiments, a natural gas combined cycle power unit supplies power to at least one of the desalination facility and the extraction facility. In certain exemplary embodiments, the extraction tailings stream is recycled into the desalination facility and there are no extraction tailings streams or desalination tailings streams discharged into the environment.
    Type: Application
    Filed: June 18, 2010
    Publication date: August 18, 2011
    Applicant: KATANA Energy LLC
    Inventor: Paul Steven Wallace
  • Patent number: 7976807
    Abstract: Hexachlorodisilane is decomposed into hydrochloric acid, silicon dioxide and water by introducing hexachlorodisilane-containing flue gas into a reaction region without moistening the flue gas and by supplying oxygen-containing gas that also contains a small amount of moisture to the reaction region maintained at a temperature at which hexachlorodisilane decomposes.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: July 12, 2011
    Assignees: Kanken Techno Co., Ltd., Toagosei Co., Ltd.
    Inventors: Hiroshi Imamura, Hiroaki Takeuchi, Koji Ishikawa, Hiroshi Suzuki, Akira Moriya, Katsuyoshi Harada
  • Publication number: 20110104034
    Abstract: This invention is directed to compositions of matter comprising a hydride ion having a binding energy greater than about 0.8 eV. The claimed hydride ions may be combined with cations, including a proton, to form novel hydrides.
    Type: Application
    Filed: May 21, 2008
    Publication date: May 5, 2011
    Inventor: Randell L. Mills
  • Publication number: 20110044882
    Abstract: The present invention relates to a process for producing high purity lithium hydroxide monohydrate, comprising following steps: concentrating a lithium containing brine; purifying the brine to remove or to reduce the concentrations of ions other than lithium; adjusting the pH of the brine to about 10.5 to 11 to further remove cations other than lithium, if necessary; neutralizing the brine with acid; purifying the brine to reduce the total concentration of calcium and magnesium to less than 150 ppb via ion exchange; electrolyzing the brine to generate a lithium hydroxide solution containing less than 150 ppb total calcium and magnesium, with chlorine and hydrogen gas as byproducts; producing hydrochloric acid via combustion of the chlorine gas with excess hydrogen and subsequent scrubbing of the resultant gas stream with purified water, if elected to do so; and concentrating and crystallizing the lithium hydroxide solution to produce lithium hydroxide monohydrate crystals.
    Type: Application
    Filed: April 9, 2009
    Publication date: February 24, 2011
    Inventors: David Buckley, J. David Genders, Dan Atherton
  • Publication number: 20110044879
    Abstract: The invention relates to a process for the treatment and purification of dangerous wastes containing ammonium salts, particularly ammonium chloride, derived from pharmaceutical and chemical technologies. The process includes the following steps: removing the organic solvent content of the waste mixture, containing an aqueous and non-aqueous phase, by phase separation based on the difference in the special weight and/or by azeotrop distillation, and heating the obtained aqueous solution at its boiling point or at a temperature belonging to the maximal saturation boiling point of the ammonium salt until the non-solvent type organic substances precipitate in the form of a well separable polymerisate phase, whereafter this phase is separated from the aqueous solution of the ammonium salt and the ammonium salt, preferably the ammonium chloride is purified by a method known per se.
    Type: Application
    Filed: March 22, 2007
    Publication date: February 24, 2011
    Inventor: János György Soós
  • Publication number: 20100320428
    Abstract: A dielectric gaseous compound which exhibits the following properties: a boiling point in the range between about ?20° C. to about ?273° C.; non-ozone depleting; a GWP less than about 22,200; chemical stability, as measured by a negative standard enthalpy of formation (dHf<0); a toxicity level such that when the dielectric gas leaks, the effective diluted concentration does not exceed its PEL; and a dielectric strength greater than air.
    Type: Application
    Filed: August 30, 2010
    Publication date: December 23, 2010
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Matthew H. Luly, Robert G. Richard
  • Publication number: 20100308261
    Abstract: A system (100) of the present invention for producing an iodine compound includes: a raw material adjusting unit (1) for supplying hydrogen-containing gas to at least one of liquid iodine in an iodine melting pot (4) and gaseous iodine obtained by evaporating liquid iodine so as to obtain a mixture gas; a hydrogen iodide producing unit (10) including a hydrogen iodide producing tower (12) having a catalyst layer (12a) for converting the introduced mixture gas into crude hydrogen iodide gas; a hydrogen iodide refining unit for removing unreacted iodine from the introduced crude hydrogen iodide gas so as to obtain hydrogen iodide gas; and an iodine compound producing unit (30) for producing a target iodine compound from the obtained hydrogen iodide gas and a reaction material. This allows producing an iodine compound with high purity easily, efficiently, and with low cost.
    Type: Application
    Filed: January 29, 2009
    Publication date: December 9, 2010
    Applicant: Nippoh Chemicals Co., Ltd
    Inventors: Satoshi Kanbe, Kazumi Hosono, Masahiro Wada
  • Publication number: 20100264372
    Abstract: A method for producing concentrated HCl vapor from an aqueous solution of HCl, including: (a) introducing an aqueous feed liquor to an evaporation chamber containing a mother liquor, the feed liquor having an initial, super-azeotropic HCl concentration; (b) directly contacting a liquor of these liquors with a heat-laden heat transfer fluid, to transfer heat from the fluid; (c) utilizing the heat to evaporate HCl, within the chamber, to produce the concentrated HCl vapor and to produce the mother liquor, the mother liquor including an aqueous phase having a reduced concentration of HCl, with respect to the initial HCl concentration; (d) subjecting the mother liquor to a liquid-liquid separation to produce a liquid phase containing HCl, and another liquid phase containing the heat transfer fluid in a heat-depleted state, with respect to the heat transfer fluid in step (b); (e) heating the heat transfer fluid in the heat-depleted state, to regenerate the heat-laden heat transfer fluid, and (f) returning this hea
    Type: Application
    Filed: April 20, 2009
    Publication date: October 21, 2010
    Inventors: Avraham BANIEL, Robert Jansen
  • Publication number: 20100234628
    Abstract: The present invention relates to a process for the preparation of indium acetate comprising the steps: (a) reacting an indium compound with an alkaline compound in a protic solvent to obtain an iridium containing precipitate, where the reaction is conducted in the presence of at least one component (i) selected from oxalic acid, a salt of oxalic acid, formic acid and a salt of formic acid, (b) reacting the precipitate in the presence of at least (i) one compound selected from oxalic acid, a salt of oxalic acid, formic acid and a salt of formic acid, and (ii) CH3CO2H and/or CH3(CO)O(CO)CH3 to give an iridium acetate containing solution. The invention also relates to indium acetate having a low halide content, to an indium containing precipitate and to uses of the iridium containing precipitate of the present invention and the iridium acetate of the present invention.
    Type: Application
    Filed: May 24, 2006
    Publication date: September 16, 2010
    Inventors: Ralf Karch, Bernd Kayser, Andreas Rivas-Nass, Jurgen Bodo Widmer, Roland Winde, Eileen Worner
  • Patent number: 7785542
    Abstract: A hydrogen iodide manufacturing method which includes a step of producing aqueous solution of hydrogen iodide and sulfuric acid by causing iodine-containing aqueous solution and sulfur dioxide to react with each other in a pressurized condition. The pressurized condition may be of not lower than 0.1 MPa in gauge pressure. The method may further include: a separation step of adding iodine to the aqueous solution of hydrogen iodide and separating an upper phase containing sulfuric acid relatively to a large extent and a lower phase containing hydrogen iodide relatively to a large extent; and a step of producing hydrogen iodide by adding sulfur dioxide to the upper phase in a pressurized condition and extracting the produced hydrogen iodide to the lower phase.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: August 31, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ryouta Takahashi, Hideki Nakamura, Kazuo Murakami, Haruhiko Takase, Noboru Jimbo, Kazuya Yamada
  • Patent number: 7749475
    Abstract: The present invention relates to a method for separation and recycling of pure sulfur dioxide from a gaseous mixture in the IS cycle. More specifically, the present invention relates to a method for separation and recycling of pure sulfur dioxide from a gaseous mixture in the IS cycle using an ionic liquid under a specific condition. When compared with the conventional amine-based absorbent, the use of the ionic liquid enables continuous absorption and stripping of SO2 even at high temperature, and enables a reversible absorption of SO2 without loss, decomposition or degradation of a solvent due to good chemical stability, thereby enabling separation and recycling of pure SO2 from a gaseous mixture in the IS cycle.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: July 6, 2010
    Assignee: Korea Institute of Science and Technology
    Inventors: Chang Soo Kim, Gyeong Taek Gong, Kye Sang Yoo, Byung Gwon Lee, Kwang Deog Jung, Hong Gon Kim, Byoung Sung Ahn, Oh Shim Joo
  • Publication number: 20100158789
    Abstract: The present invention is drawn to a method for removing colloidal titanium dioxide and titanium oxychloride from by-product hydrochloric acid. The method includes adding phosphate ion source and quaternary amine to the by-product acid to cause the titanium dioxide and the titanium oxychloride to form a precipitate. The precipitate can then be separated from the acid, thus producing a decontaminated hydrochloric acid product with reduced levels of titanium.
    Type: Application
    Filed: March 2, 2010
    Publication date: June 24, 2010
    Inventor: Frederick Haydock
  • Publication number: 20100111819
    Abstract: A method is disclosed for production of a sulfate-containing salt and anhydrous gaseous HCl from a metal chloride (MClx) and oleum. MClx and oleum are mixed together with a water-containing liquid, forming gaseous HCl and a solution of a sulfate-containing salt or double salt. The salt is precipitated from the solution, and in a preferred embodiment, the supernatant liquid from the precipitation is recycled to the reaction mixture as the water-containing liquid in subsequent reaction cycles. In a preferred embodiment, HCl discharged from the reaction mixture is scrubbed to remove dust, water vapor and traces of H2SO4, yielding anhydrous HCl of >90% purity. The exothermicity of the reaction between the water-containing liquid and the oleum is sufficient that, unlike methods known in the prior art, the process proceeds quickly and efficiently without any necessity for additional heating of the reaction mixture.
    Type: Application
    Filed: June 15, 2008
    Publication date: May 6, 2010
    Inventor: Leonid Finkelshtein
  • Publication number: 20100111818
    Abstract: The present disclosure is drawn to a method for removing colloidal titanium dioxide and titanium oxychloride from by-product hydrochloric acid, typically without the use of metallic hydroxides and/or other neutralizing agents. Often, the decontaminated hydrochloric acid product is commercial grade and has concentrations greater than 85 wt % of the concentration of untreated by-product hydrochloric acid. The method includes adding phosphate ion source and quaternary amine or other precipitating agent to the by-product hydrochloric acid to cause the titanium dioxide and the titanium oxychloride to form a precipitate. In one embodiment, the method further includes heating at least one of the phosphate ion source, the quaternary amine or alternative precipitating agent, the by-product hydrochloric acid, or combination thereof. The precipitate can then be separated from the acid, thus producing a decontaminated hydrochloric acid product with reduced levels of titanium and other contaminants.
    Type: Application
    Filed: October 29, 2009
    Publication date: May 6, 2010
    Inventor: Frederick J. Haydock
  • Patent number: 7691351
    Abstract: The present invention is directed to a method for treatment of a gas stream comprising silicon tetrafluoride and hydrogen chloride. For example, the present invention is directed to a method for treatment of such a gas stream that involves contacting the gas stream with a metal that reacts with the hydrogen chloride to provide a treated gas stream having reduced hydrogen chloride content. The present invention is further directed to methods for subjecting silicon tetrafluoride and hydrogen chloride-containing gas streams to elevated pressure to provide gas streams suitable for transport.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: April 6, 2010
    Assignee: MEMC Electronic Materials, Inc.
    Inventors: Vithal Revankar, Jameel Ibrahim
  • Patent number: 7658904
    Abstract: Process for the production of hydrogen by the thermochemical route from water, based on the chlorine/cerium cycle, in which, according to a first reaction scheme, the following reactions are carried out: H2O+Cl2=2HCl+½O2;??(A) 8HCl+2CeO2=2CeCl3+Cl2+4H2O;??(B) 2CeCl3+4H2O=2CeO2+6HCl+H2;??(C) or in which, according to a second reaction scheme, the following reactions are carried out: H2O+Cl2=2HCl+½O2;??(A) 8HCl+2CeO2=2CeCl3+Cl2+4H2O;??(B) 2CeCl3+2H2O=2CeOCl+4HCl;??(B?) 2CeOCl+2H2O=2CeO2+2HCl+H2;??(C?) and in which the reaction (B) for the chlorination of cerium oxide is carried out in the liquid phase, the cerium chloride passing into solution.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: February 9, 2010
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Roger Boen, Christophe Girold, Florent Lemort, Vlatko Materic
  • Patent number: 7560083
    Abstract: A method for removing water molecules from a vacuum chamber for carrying out a process on a target object in vacuum includes the steps of introducing into the vacuum chamber a water molecule removal gas including at least a reduction gas which reduces the water molecules to produce hydrogen molecules and a halogen-based gas which reacts with the produced hydrogen molecules to produce acid, exhausting gases in the vacuum chamber measuring an amount of water molecules present inside the vacuum chamber, and determining whether or not the measured amount of water molecules is greater than or equal to a threshold value, wherein if the measured amount of water molecules is greater than or equal to the threshold value, the water molecule removal gas is introduced into the vacuum chamber in the introducing step.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: July 14, 2009
    Assignee: Tokyo Electron Limited
    Inventors: Tsuyoshi Moriya, Hiroyuki Nakayama, Hiroshi Nagaike
  • Patent number: 7537749
    Abstract: The invention concerns a method for processing heavy metal-laden spent sulfuric acid. For this, iron-laden spent sulfuric acid or iron-laden sulfuric materials obtained therefrom are reacted with a material that contains iron chloride and optionally other metal chlorides, producing iron (II) sulfate. The spent sulfuric acid preferably derives from titanium dioxide production.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: May 26, 2009
    Assignee: Tronox Pigments GmbH
    Inventors: Gerhard Auer, Berndt-Ullrich Köhler, Benno Laubach
  • Publication number: 20090130016
    Abstract: Provided is a thermionic cathode doped with an increased binding energy hydrogen species and a method of making the doped thermionic cathode.
    Type: Application
    Filed: May 21, 2008
    Publication date: May 21, 2009
    Inventor: Randell L. Mills
  • Patent number: 7498009
    Abstract: A method for reducing or substantially eliminating oxides of nitrogen from an effluent gas stream, that includes providing a source of ultraviolet radiation with a precise wavelength, adding ammonia or an ammonia based reagent to the effluent stream, upstream of the ultraviolet radiation source, controllably operating the ultraviolet radiation source to irradiate the effluent stream flowing in the duct and substantially reducing or eliminating oxides of nitrogen by promotion a reaction of ammonia with the oxides of nitrogen to produce N2 and H2O, and also thereby destroying any surplus ammonia. This process can also be modified to oxidize carbon monoxide and VOC's to CO2 and H2O.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: March 3, 2009
    Assignee: Dana UV, Inc.
    Inventors: James T. Leach, Michael Lee Fraim
  • Publication number: 20080311026
    Abstract: Process for the production of hydrogen by the thermochemical route from water, based on the chlorine/cerium cycle, in which, according to a first reaction scheme, the following reactions are carried out: H2O+Cl2=2HCl+½O2; ??(A) 8HCl+2CeO2=2CeCl3+Cl2+4H2O; ??(B) 2CeCl3+4H2O=2CeO2+6HCl+H2; ??(C) or in which, according to a second reaction scheme, the following reactions are carried out: H2O+Cl2=2HCl+½O2; ??(A) 8HCl+2CeO2=2CeCl3+Cl2+4H2O; ??(B) 2CeCl3+2H2O=2CeOCl+4HCl; ??(B?) 2CeOCl+2H2O=2CeO2+2HCl+H2; ??(C?) and in which the reaction (B) for the chlorination of cerium oxide is carried out in the liquid phase, the cerium chloride passing into solution.
    Type: Application
    Filed: December 20, 2005
    Publication date: December 18, 2008
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE
    Inventors: Roger Boen, Christoph Girold, Florent Lemort, Vlatko Materic
  • Patent number: 7442363
    Abstract: A hydrogen iodide manufacturing method which includes a step of producing aqueous solution of hydrogen iodide and sulfuric acid by causing iodine-containing aqueous solution and sulfur dioxide to react with each other in a pressurized condition. The pressurized condition may be of not lower than 0.1 MPa in gauge pressure. The method may further include: a separation step of adding iodine to the aqueous solution of hydrogen iodide and separating an upper phase containing sulfuric acid relatively to a large extent and a lower phase containing hydrogen iodide relatively to a large extent; and a step of producing hydrogen iodide by adding sulfur dioxide to the upper phase in a pressurized condition and extracting the produced hydrogen iodide to the lower phase.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: October 28, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Ryouta Takahashi, Hideki Nakamura, Kazuo Murakami, Haruhiko Takase, Noboru Jimbo, Kazuya Yamada
  • Patent number: 7371357
    Abstract: A process for the removal of pollutants from a combustion process and, more particularly, a process for removing pollutants such as carbon dioxide, mercury, sulphur dioxide, nitrogen compounds and oxygen compounds from a combustion process. The process includes the removal of pollutants from a combustion process that produces an emission comprising: cooling the emission to a temperature of about 200° C.; removing nitrogen, water and oxygen from the emission to produce a gas containing a concentration of pollutants; contacting the gas with an aqueous magnesium chloride solution, wherein a slurry mixture is formed; and cooling the gas and the slurry mixture, wherein hydrochloric acid vapour and a sludge are formed.
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: May 13, 2008
    Assignee: Clean World Strategies Corp.
    Inventors: Lionel Magumbe, Douglas S. Scott
  • Patent number: 7144568
    Abstract: Described is a process and a device for carrying out a reaction in liquid medium during which evolution of gas occurs. The process can be applied in particular to a reaction employing a peroxide such as hydrogen peroxide and, in particular, to the reduction of chlorine present in an aqueous effluent.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: December 5, 2006
    Assignee: Arkema France
    Inventors: Jean Philippe Ricard, Joel Choupeaux, Jean Michel Delassus
  • Patent number: 7060242
    Abstract: In a method for the treatment of halogen containing waste materials wherein valuable materials and/or energy can be recuperated without the generation of additional halogenated waste materials, the halogen containing waste materials are mixed with a molten substituted or non-substituted polyolefin in an inert gas atmosphere, whereby, upon melting, hydrogen halogenides are formed and the hydrogen halogenides are separated from the mixture.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: June 13, 2006
    Assignee: Forschungszentrum Karlsruhe GmbH
    Inventors: Andreas Hornung, Aliaksandr Balabanovich, Susanne Donner, Helmut Seifert
  • Patent number: 7045109
    Abstract: Process for the conversion of sodium bromide to anhydrous hydrobromic acid and sodium bisulfate, said process with the following sequential steps: reaction of sodium bromide and sulfuric acid in a solution of water to produce hydrobromic acid and sodium bisulfate wherein the conversion of sodium bromide is greater than about 99%; adsorption of iron bromide onto a solid adsorbent; separation of hydrobromic acid and water from the sodium bisulfate; separation and drying of hydrobromic acid; and solidification of the sodium bisulfate into a flaked or granular form.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: May 16, 2006
    Assignee: Procter & Gamble
    Inventors: Jared John Schaefer, Corey James Kenneally, Daniel Martin Bourgeois, Deborah Jean Back
  • Patent number: 7021487
    Abstract: A metal container to be filled with a halogen containing gas, with the inner surface processed with a polishing agent. The gas has a reduced purity decline by the increase of the water content or impurities from the inner surface of the container which is absorbed by the gas over the passage of time. The inner surface processing method is improved such that the value of dividing the area of the Si2s peak by the area of the Fe2p3/2 peak in the X-ray photoelectron spectrum of the gas container inner surface with the inner surface process with a polishing agent applied is 0.3 or less.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: April 4, 2006
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Akio Kikkawa, Shigeo Kanayama, Isao Harada
  • Patent number: 7014824
    Abstract: The present invention relates to a method for purifying process waste gases by introducing them into a waste gas purification system that includes a reaction chamber and by post-treating the reaction products that leave the reaction chamber in a washing or sorbtion chamber with an associated washing agent circuit. The type and amount of harmful substances in the process waste gas are continuously measured before the waste gases enter the waste gas purification system. In addition, the type and amount of harmful substances in the reaction products that leave the waste gas purification system are simultaneously determined directly at the exit of the system and the measuring signals are used to regulate the operating parameters of the waste gas purification system.
    Type: Grant
    Filed: November 29, 2000
    Date of Patent: March 21, 2006
    Assignee: Centrotherm Elektrische Anlagen GmbH & Co.
    Inventors: Gunter Krodel, Lutz Fabian, Volkmar Hopfe
  • Patent number: 6969500
    Abstract: The invention relates to a method for separating titanium tetrachloride and the hydrolyzed reaction products of titanium tetrachloride from the exhaust gases generated during the chlorination of raw materials containing titanium by treating the exhaust gases with a first aqueous hydrochloric-acid solution of titanium oxychloride, where, in the first separation stage (2), small droplets of hydrochloric-acid titanium oxychloride solution (3) are flowed with the exhaust gas flow, and larger droplets of hydrochloric-acid titanium oxychloride solution are flowed counter current to the exhaust to remove the smaller droplets and ensure that virtually no droplets are carried to a second separation stage. In the second separation stage, a second titanium oxychloride solution is injected into a second reactor (9), the second solution having a lower titanium oxychloride concentration than that injected in the first separation stage.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: November 29, 2005
    Assignee: Kronos International Inc
    Inventors: Hans-Joerg Bonath, Michael Ebert, Andreas Kade, Frank Malcharek, Josef Mayer, Dirk Wolff
  • Patent number: 6933417
    Abstract: A process for producing vinyl chloride monomer from ethylene and ethane having input of significant quantities of both ethane and ethylene in input streams to the affiliated reactor where hydrogen chloride in the reactor effluent is only partially recovered from the reactor effluent in the first unit operation after the ethane/ethylene-to-vinyl reaction step or stage. Steps are presented of oxydehydro-chlorination catalytic reaction of ethane, ethylene, hydrogen chloride, oxygen, and chlorine; cooling and condensing the reactor effluent stream; and separating the condensed raw product stream into vinyl chloride monomer and a reactor recycle stream.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: August 23, 2005
    Assignee: Dow Global Technologies Inc.
    Inventors: John P. Henley, Mark E. Jones, Daniel A. Hickman, Kenric A. Marshall, Daniel J. Reed, William D. Clarke, Michael M. Olken, Lee E. Walko
  • Patent number: 6890508
    Abstract: The present invention relates to a process for preparing largely HBr-free HCl gas and largely HBr-free aqueous HCl solution, which comprises the following steps: a) providing HBr-containing HCl gas; b) passing the HBr-containing HCl gas through aqueous HCl solution saturated with HCl; c) separating off HBr-containing aqueous HCl solution saturated with HCl; d) if desired, passing the largely HBr-free HCl gas obtained in step b) into water to obtain largely HBr-free aqueous HCl solution; with largely HBr-free aqueous HCl solution produced in step d) being able, if desired, to be recirculated to step b) of the process. The process of the present invention allows high-purity aqueous HCl solution for use in the semiconductor industry to be prepared inexpensively and on an industrial scale. However, the purified HCl gas obtained by means of steps a) to c) can also be used for any other purposes. The invention likewise provides an apparatus for carrying out the process of the present invention.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: May 10, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Schläfer, Josef Guth, Hans-Ulrich Schlimper
  • Patent number: 6811763
    Abstract: Process for the conversion of sodium bromide to anhydrous hydrobromic acid and sodium bisulfate, said process with the following sequential steps: reaction of sodium bromide and sulfuric acid in a solution of water to produce hydrobromic acid and sodium bisulfate wherein the conversion rate is greater than about 95%; separation of hydrobromic acid and water from the sodium bisulfate; separation of hydrobromic acid from water; and drying of hydrobromic acid.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: November 2, 2004
    Assignee: The Procter & Gamble Company
    Inventors: Daniel Martin Bourgeois, Corey James Kenneally