Class / Patent application number | Description | Number of patent applications / Date published |
423385000 | Oxygen containing | 85 |
20090180945 | LIQUID AND SOLID EFFLUENT TREATMENT PROCESS - A process for recovering metals such as Ni, Co, Mn, Cu, Zn, among others, through precipitation as sulphides, enabling recovery of magnesium in the form of hydroxide, carbonate and oxide and providing recovery of sulphate as gypsum and ammonium sulphate. Liquid phase, after full treatment, comprises recovered water with a quality proper for total reuse in industrial process. | 07-16-2009 |
20110064642 | DIELECTRIC FILM WITH METALLIC OXYNITRIDE - The present invention provides a method of manufacturing a dielectric film having a high permittivity. An embodiment of the present invention is a method of manufacturing, on a substrate, a dielectric film including a metallic oxynitride containing an element A made of Hf or a mixture of Hf and Zr, an element B made of Al, and N and O. The manufacturing method includes: a step of forming a metallic oxynitride whose mole fractions of the element A, the element B, and N expressed as B/(A+B+N) has a range of 0.015≦(B/(A+B+N))≦0.095 and N/(A+B+N) has a range of 0.045≦(N/(A+B+N)) and a mole fraction O/A of the element A and O has a range expressed as 1.0<(O/A)<2.0, and having a noncrystalline structure; and a step of performing an annealing treatment at 700° C. or higher on the metallic oxynitride having a noncrystalline structure to form a metallic oxynitride including a crystalline phase with a cubical crystal incorporation percentage of 80% or higher. | 03-17-2011 |
20150037236 | MACROPOROUS TITANIUM COMPOUND MONOLITH AND METHOD FOR PRODUCING SAME - Provided are a macroporous titanium compound monolith and a production method thereof, the macroporous titanium compound monolith having a framework that is composed of a titanium compound other than titanium dioxide, having controlled macropores, and having electron conductivity, the titanium compound being oxygen-deficient titanium oxide, titanium oxynitride, or titanium nitride. Provided is a method including: placing a macroporous titanium dioxide monolith and a metal having titanium-reducing ability in a container, the macroporous titanium dioxide monolith having a co-continuous structure of a macropore and a framework that is composed of titanium dioxide; creating a vacuum atmosphere or an inert gas atmosphere within the container; and heating the monolith and the metal to cause gas-phase reduction that removes oxygen atom from the titanium dioxide composing the monolith by the metal acting as an oxygen getter, thereby obtaining a macroporous oxygen-deficient titanium oxide monolith having a co-continuous structure of the macropore and a framework that is composed of oxygen-deficient titanium oxide, the macroporous oxygen-deficient titanium oxide monolith having electron conductivity derived from the oxygen-deficient titanium oxide. | 02-05-2015 |
20220135407 | APPARATUS AND PROCESS FOR CONVERSION OF AMMONIA INTO OXIDES OF NITROGEN - Disclosed is an apparatus for conversion of ammonia into oxides of nitrogen which may comprise an adiabatic burner ( | 05-05-2022 |
423386000 | Halogen containing | 13 |
20090074651 | METHOD FOR PREPARING TITANIUM DIOXIDE PARTICLES CO-DOPED WITH NITROGEN AND FLUORINE - A method for preparing titanium dioxide particles co-doped with nitrogen and fluorine includes the steps of: mixing boric acid with ammonium fluorotitanate in an aqueous medium to form ammonium oxotrifluorotitanate; liquid-phase depositing the ammonium oxotrifluorotitanate on a silicon-containing substrate; and thermo-treating the ammonium oxotrifluorotitanate on the silicon-containing substrate at a temperature ranging from 300 to 1000° C. | 03-19-2009 |
20120009113 | METHOD FOR PRODUCING BIS(FLUOROSULFONYL)IMIDE - According to the method for producing bis(fluorosulfonyl)imide of the present invention, first, an unreacted mixed liquid is prepared by mixing a first fluorosulfonic acid with urea in a condition free of a chemical reaction between the first fluorosulfonic acid and urea. Then, the unreacted mixed liquid is dripped into a heated second fluorosulfonic acid or a heated bis(fluorosulfonyl)imide, allowing a chemical reaction between fluorosulfonic acid and urea to proceed. In this method, generation of carbon dioxide gas and heat during the chemical reaction can be controlled. | 01-12-2012 |
20120014859 | METHOD FOR PRODUCING BIS(FLUOROSULFONYL)IMIDE SALT, METHOD FOR PRODUCING FLUOROSULFATE, AND METHOD FOR PRODUCING BIS(FLUOROSULFONYL)IMIDE ONIUM SALT - According to the method for producing bis(fluorosulfonyl)imide salt of the present invention, the method for producing fluorosulfate, and the method for producing bis(fluorosulfonyl)imide onium salt, first, an aqueous solution is prepared by dissolving a mixed liquid containing bis(fluorosulfonyl)imide and fluorosulfonic acid in water. Then, the aqueous solution is neutralized with an alkaline compound, producing bis(fluorosulfonyl)imide salt and fluorosulfate. In the methods, bis(fluorosulfonyl)imide salt, fluorosulfate, and bis(fluorosulfonyl)imide onium salt can be obtained safely and easily. | 01-19-2012 |
20120020867 | Method for Producing Imide Compound - Disclosed is a method for producing “a salt or a complex comprising imide and an organic base”, characterized by reacting halogenated sulfuryl or halogenated phosphoryl with ammonia in the presence of an organic base. According to this method, a target imide compound can be produced in a high yield while significantly suppressing the production of by-products. Further, by reacting the obtained imide compound with an alkali metal hydroxide or an alkaline earth metal hydroxide, an imide metal salt can be easily derived. | 01-26-2012 |
20120230906 | METHOD OF MAKING FLUOROSULFONYLAMINE - The present invention is directed to methods comprising adding NH | 09-13-2012 |
20130294997 | METHOD FOR PRODUCING FLUORINE COMPOUND | 11-07-2013 |
20130323154 | PROCESS FOR PRODUCTION OF FLUOROSULFONYLIMIDE AMMONIUM SALT - A compound [I] such as ammonium N-(chlorosulfonyl)-N-(fluorosulfonyl)imide is reacted with hydrogen fluoride to obtain a compound [II] such as ammonium N,N-di(fluorosulfonyl)imide. The obtained compound [II] is reacted with an alkali metal compound or the like to obtain a compound [IV] such as an N,N-di(fluorosulfonyl)imide alkali metal salt. | 12-05-2013 |
20130323155 | PROCESS FOR PRODUCING FLUORINE-CONTAINING SULFONYLIMIDE SALT - By reacting a fluorine-containing sulfonylimide ammonium salt such as ammonium N,N-di(fluorosulfonyl)imide with an alkali metal hydroxide such as lithium hydroxide, potassium hydroxide or sodium hydroxide under reduced pressure and at a low temperature of approximately 40° C., a fluorine-containing sulfonylimide alkali metal salt such as lithium N,N-di(fluorosulfonyl)imide, potassium N,N-di(fluorosulfonyl)imide or sodium N,N-di(fluorosulfonyl)imide is obtained. | 12-05-2013 |
20140037529 | METHOD FOR PRODUCING BIS(FLUOROSULFONYL)IMIDE SALT, METHOD FOR PRODUCING FLUOROSULFATE, AND METHOD FOR PRODUCING BIS(FLUOROSULFONYL)IMIDE ONIUM SALT - According to the method for producing bis(fluorosulfonyl)imide salt of the present invention, the method for producing fluorosulfate, and the method for producing bis(fluorosulfonyl)imide onium salt, first, an aqueous solution is prepared by dissolving a mixed liquid containing bis(fluorosulfonyl)imide and fluorosulfonic acid in water. Then, the aqueous solution is neutralized with an alkaline compound, producing bis(fluorosulfonyl)imide salt and fluorosulfate. In the methods, bis(fluorosulfonyl)imide salt, fluorosulfate, and bis(fluorosulfonyl)imide onium salt can be obtained safely and easily. | 02-06-2014 |
20140241973 | METHOD FOR PRODUCING IMIDE SALT - A mixture of sulphamic acid, a halogenated sulphonic acid and thionyl chloride is heated to allow the reaction to proceed, to thereby produce first intermediate products. The first intermediate products are then subjected to reaction with an alkali metal fluoride MF to produce second intermediate products. The second intermediate products is then subjected to reaction with the alkali metal fluoride MF in a polar solvent to obtain a desired product MN(SO | 08-28-2014 |
20140369919 | PROCESS FOR THE PREPARATION OF LITHIUM OR SODIUM BIS(FLUOROSULPHONYL)IMIDE - A process for the preparation of a bis(sulphonato)imide salt of formula: (III) (SO | 12-18-2014 |
20150086466 | ALKALI METAL SALT OF FLUOROSULFONYL IMIDE, AND PRODUCTION METHOD THEREFOR - The present invention provides an alkali metal salt of fluorosulfonyl imide having favorable heat resistance and a reduced content of specific impurities and a water content, and provides a method for producing an alkali metal salt of fluorosulfonyl imide, which is capable of easily removing a solvent from a reaction solution. An alkali metal salt of fluorosulfonyl imide of the present invention is represented by the following general formula (I) and has a mass loss rate of 2% or less when the alkali metal salt of fluorosulfonyl imide is kept at 100° C. for 8 hours under an air current. A method for producing an alkali metal salt of fluorosulfonyl imide of the present invention comprises a step of concentrating a solution of the alkali metal salt of fluorosulfonyl imide by bubbling a gas into a reaction solution containing the alkali metal salt of fluorosulfonyl imide, and/or concentrating a solution of the alkali metal salt of fluorosulfonyl imide by thin layer distillation. | 03-26-2015 |
20160016797 | METHOD FOR PRODUCING DISULFONYLAMINE ALKALI METAL SALT - The present invention provides a method for producing a disulfonylamine alkali metal salt, including a step of subjecting a disulfonylamine onium salt represented by formula [I] (wherein each of R | 01-21-2016 |
423387000 | Hydrogen containing | 32 |
20080226533 | Method of Producing Salts of Dinitramidic Acid - A method of preparing salt of dinitramidic acid, comprising nitration of an initial compound with a nitrating acid mixture to form dinitramidic acid in a reaction mixture. A positive ion is added to the reaction mixture and forms with the dinitramide ion an ion pair complex which precipitates in the acidic reaction mixture, and the precipitate is separated from the mixture. The remaining spent acid can be reprocessed for recovery of acid for preparation of a new nitrating acid mixture. The preferred positive ion is the guanylurea ion which gives a precipitate of guanylurea dinitramide. The precipitate can be used as starting material for preparation of other dinitramide salts, such as KDN and ADN. The guanylurea ion can be formed in situ in the process by cyanoguanidine being reacted with the reaction mixture. | 09-18-2008 |
20090324480 | Method for manufacturing hydroxylamine - Provided is a method for manufacturing hydroxylamine. In this method, an aqueous reaction medium containing acidic buffer agent and nitrate ions in the presence of a limited amount of metal impurities such as Fe or Cu is introduced into a hydroxylamine synthesis reactor in the presence of catalyst to proceed hydroxylamine synthesis by reduction of nitrate ions with hydrogen gas as reducing agent in the aqueous reaction medium to produce hydroxylamine. The reaction is processed in the aqueous reaction medium with a limited amount of metal impurities or even without metal impurities, such that the selection rate of the hydroxylamine product is increased. | 12-31-2009 |
20100068117 | METHODS FOR PRODUCING GALLIUM AND OTHER OXO/HYDROXO-BRIDGED METAL AQUO CLUSTERS - Metallic clusters can be produced by contacting a metal salt such as a metal nitrate with an organic reducing agent. Metals can be selected from a group consisting of metals exhibiting octahedral coordination, and nitrates of the selected metal or metals are contacted with, for example nitrosobenzene. Binary, tertiary, or other clusters can be produced. | 03-18-2010 |
20110008238 | REGENERATION OF HYDROGENATION CATALYSTS BASED ON A PLATINUM METAL - A process for regenerating hydrogenation catalysts based on a platinum metal, where the hydrogenation catalysts based on a platinum metal are thermally regenerated at temperatures of from 50 to 600° C. | 01-13-2011 |
20110171103 | METHOD FOR MANUFACTURING HYDROXYLAMINE - Provided is a method for manufacturing hydroxylamine. In this method, an aqueous reaction medium containing acidic buffer agent and nitrate ions in the presence of a limited amount of metal impurities such as Fe is introduced into a hydroxylamine synthesis reactor in the presence of catalyst to proceed hydroxylamine synthesis by reduction of nitrate ions with hydrogen gas as reducing agent in the aqueous reaction medium to produce hydroxylamine. The reaction is processed in the aqueous reaction medium with a limited amount of metal impurities, such that the selection rate of the hydroxylamine product is increased while high catalytic activity is kept. | 07-14-2011 |
20110171104 | METHOD FOR OBTAINING ADN CRYSTALS THROUGH CRYSTALLIZATION IN A VISCOUS MEDIUM - The present invention relates to a method for crystallizing ammonium dinitramide (ADN), through spontaneous nucleation and crystal growth, from a solution containing said ammonium dinitramide (AND) dissolved in a solvent. Said solvent characteristically has a viscosity greater than or equal to 0.25 Pa s (250 cP) when said spontaneous nucleation is implemented. The ADN crystals obtained by said method have a median shape factor of 1 to 1.5 and are perfectly suitable for placement in the composition of energy materials. | 07-14-2011 |
20130280158 | METHOD OF PRODUCING COPPER PRECURSOR AND COPPER PRECURSOR PRODUCED BY USING THE SAME - There is provided a method of producing a copper precursor and a copper precursor produced by using the same. The method of producing a copper precursor includes: preparing an aqueous solution including a copper salt or a hydrate thereof; preparing a mixture by mixing urea (CO(NH | 10-24-2013 |
20130315812 | PROCESS FOR REMOVING HYDRAZINE FROM HYDROXLYAMINE SOLUTIONS - The present invention relates to processes for reducing or eliminating the amount of hydrazine from a hydroxylamine-free base containing hydrazine by treating said hydroxylamine-free base with a scavenger agent, and to the hydroxylamine-free base thereby obtained, as well as to its use for producing microdispersions containing a hydroxamated polymer for use as a flocculant in the Bayer process. | 11-28-2013 |
20160083264 | PREPARATION OF SUSPENSIONS - A method for preparing a suspension of LDH particles comprising the steps of: preparing LDH precipitates by coprecipitation to form a mixture of LDH precipitates and solution; separating the LDH precipitates from the solution; washing the LDH precipitates to remove residual ions; mixing the LDH precipitates with water; and subjecting the mixture of LDH particles and water to a hydrothermal treatment step by heating to a temperature of from greater than 80° C. to 150° C. for a period of about 1 hour to about 144 hours to form a well dispersed suspension of LDH particles in water, wherein said LDH particles in suspension comprise platelets having a maximum particle dimension of up to 400 nm. | 03-24-2016 |
423388000 | Sulfur containing | 6 |
20100111807 | PROCESS FOR PREPARING CRYSTALLINE HYDROXYLAMINE-O-SULFONIC ACID - A process for preparing crystalline hydroxylamine-O-sulfonic acid by
| 05-06-2010 |
20100316553 | METHOD FOR EXTRACTING AMMONIUM SALT AND METHANOL FROM A LIQUID OBTAINED FROM FOUL CONDENSATES IN A CELLULOSE PULP MILL - Desirable chemicals are recovered from a raw material that is formed in substantial amounts during the production of cellulose pulp from renewable lingo-cellulose material. An ammonia/ammonium-containing methanol/water mixture is acidified with an acid that has the ability of forming ammonium salt with the ammonium. The mixture is circulated and passed through an apparatus that has an indirect heat exchanger combined with an storage volume fitted with a gas collection device. | 12-16-2010 |
20110038781 | METHOD FOR PRODUCING A COARSE-GRAINED AMMONIUM SULFATE PRODUCT BY CRYSTALLIZATION AND FACILITY FOR PERFORMING THE METHOD - A method and installation for the production of a coarse-grained ammonium sulfate product by crystallization includes firstly generating a crystal having a grain smaller than the desired grain size in a pre-crystallizer and withdrawing a suspension therefrom, from which the fine crystal was previously separated in a classification connecting piece. This suspension, which contains medium-sized grain, is then conducted with a proportion of undersaturated mother liquor, which is sufficient for further crystal growth, into a DTB product crystallizer and crystallized therein to a desired grain size. The heating of the product crystallizer is performed by the heat contained in the vapors of the pre-crystallization. The pre-crystallization may also operate according to the DTB principle, wherein the mother liquor needed for crystallization is supplied in the form of separately admixed concentrated sulfuric acid and ammonia into the external solution loop of the pre-crystallizer. The reaction heat released in this case may be sufficient for the operation of the entire process. | 02-17-2011 |
20110070144 | PROCESS FOR CONVERSION OF WASTE FLUID STREAMS FROM CHEMICAL PROCESSING PLANTS TO BENEFICIARY AGRICULTURE PRODUCTS - The present invention is directed to the conversion of gas streams comprising ammonia, hydrogen sulfide, and water in the form of liquids or gases that are generated by petroleum refineries and coke ovens to beneficiary agriculture products, by forming ammonium sulfide and then converting the ammonium sulfide, using sulfuric acid, to pure ammonium sulfate. | 03-24-2011 |
20110268644 | PELLETIZED AMMONIUM SULFATE PARTICLES - The invention relates to a method for preparing pelletized ammonium sulfate particles, the method comprising—providing ammonium sulfate crystals;—isolating a fraction comprising crystals having an intermediate size from crystals having a small size and from crystals having a large size, thereby obtaining remaining crystals comprised of crystals having small size and crystals having large size; and—pelletizing through a die at least part of the remaining crystals, i.e. at least part of the crystals from which the fraction comprising crystals having the intermediate size have been isolated, thereby forming pelletized ammonium sulfate particles. | 11-03-2011 |
20130230446 | METHOD FOR PRODUCING A COARSE-GRAINED AMMONIUM SULFATE PRODUCT VIA CRYSTALLIZATION AND INSTALLATION FOR OPERATING THE METHOD - Method for the production of a coarse-grained ammonium sulphate product by crystallization and installation for carrying out the method. A method for the continuous production of a coarse-grained ammonium sulphate product from an ammonium sulphate solution in a crystallizer operates in accordance with the DTB principle and has an internal suspension circuit and a clarifying zone, from which a clarified partial flow of solution is constantly drawn off into an external circuit, is heated in a heat exchanger so as to dissolve the solids contained therein and is then guided back as a clear solution into the lower region of the crystallizer. In order to ensure production of a product crystallizate with a grain coarseness which is practically constant over time, a fine crystal suspension flow may be drawn off from the clarifying zone as a further partial flow and guided back into the internal circuit of the crystallization stage without any previous dissolution of the solid proportion contained therein. | 09-05-2013 |
423390100 | Nitric acid | 17 |
20110243829 | METHOD OF DECOMPOSING N20 USING A CATALYST BASED ON A CERIUM LANTHANUM OXIDE - A method for decomposing N | 10-06-2011 |
20120014860 | METHOD FOR RECOVERING NITRIC ACID AND PURIFYING SILVER NITRATE ELECTROLYTE - A processes for the regeneration of a silver nitrate and nitric acid based electrolyte as used in certain silver refining processes is based on the hydrolytic removal of undesired metal-based compounds such as water insoluble hydrolysable base metal cations and water insoluble hydrolysable base metal nitrates from which the soluble silver nitrate and nitric acid based electrolyte may be separated. Water is added slowly to a dewatered electrolyte melt held at a predetermined, elevated, temperature while allowing nitric acid thereby formed to evolve and be separated from the melt while the water insoluble base metal salts are formed. The melt is then diluted with water to dilute the silver nitrate contained therein and the insoluble base metal salts are separated from the mixture by filtration. | 01-19-2012 |
20140186254 | NITROGEN FIXATION BY TITANIUM DIOXIDE - In various embodiments, the present disclosure provides a method of fixing nitrogen. An amount of titania catalyst is provided and contacted with a feed stream that includes nitrogen. The titania catalyst is heated. The heated titania catalyst fixes nitrogen in the feed stream to form nitrogen products, such as nitrates. The nitrogen products are then removed from the titania catalyst. In some examples, the titania catalyst is treated with a base. In further examples, the catalytic process is carried out in the absence of light for photochemically activating the titania catalyst. | 07-03-2014 |
423391000 | By reacting a salt and an acid | 1 |
20120207664 | SYSTEMS AND METHODS FOR RECOVERING NITRIC ACID FROM PICKLING SOLUTIONS - An embodiment of a method for recovering nitric acid from acid pickling solution includes introducing a treating material comprising at least one chemical into a pickling solution comprising free nitric acid. The treating material reacts with at least a portion of the free nitric acid in the pickling solution and produces NO | 08-16-2012 |
423392000 | Utilizing ammonia as reactant | 8 |
20110002836 | Method for Manufacturing Nitric Acid - The present invention relates to a method for manufacturing nitric acid wherein a gaseous mixture, including air and ammonia, is transported on a catalyst including platinum to carry out catalytic oxidation of the ammonia, and is characterized in that a sulfurated component is added to the gaseous mixture. | 01-06-2011 |
20120183467 | LOW TEMPERATURE OXIDATION OF AMMONIA IN NITRIC ACID PRODUCTION - Ammonia in a gas stream comprising oxygen and nitrogen may be effectively completely oxidized to a mixture of NO and NO | 07-19-2012 |
20130294998 | PROCESS FOR PRODUCING NITRIC ACID - A process for producing nitric acid is disclosed in which a gaseous oxidiser feed composed at least substantially of ammonia, steam and an oxidising gas is exposed to conditions whereby the ammonia is oxidised to produce a reaction mixture including nitrogen monoxide and water vapour. The reaction mixture is then cooled in a heat exchanger whereby: a) the nitrogen monoxide is oxidised and the water vapour is caused to condense, b) the products of the nitrogen monoxide oxidation react with and are absorbed by the condensed water, and c) substantially all of the nitrogen monoxide in the reaction mixture is converted to nitric acid. Also disclosed is a nitric acid solution when produced by the disclosed process. | 11-07-2013 |
20130336872 | Method for Removing N2O and NOx From the Nitric Acid Production Process, and an Installation Suitable for Same - The invention relates to a process and apparatus for preparing nitric acid by catalytic oxidation of NH | 12-19-2013 |
20140377157 | METHOD AND DEVICE FOR PRODUCING NITRIC ACID - A process is described for startup and/or shutdown of a plant for preparation of nitric acid from ammonia and oxygenous gas by the single pressure or dual pressure process, in which the ammonia used is oxidized by means of compressed process air over a catalyst, said process air having been compressed in at least one compressor ( | 12-25-2014 |
20150353356 | AN AMMONIA OXIDATION CATALYST FOR THE PRODUCTION OF NITRIC ACID BASED ON METAL DOPED YTTRIUM ORTHO COBALTATE - The present invention relates to a catalytically active component of a catalyst, which comprises single phase oxides, based on a metal doped yttrium ortho-cobaltate oxide systems, methods for the oxidation of ammonia 5 and hydrocarbon in the presence of said catalytically active component and the use thereof. | 12-10-2015 |
20150376010 | PROCESS AND PRODUCTION PLANT FOR PREPARING NITRIC ACID - In a process for preparing nitric acid, nitrogen oxides are first generated in an ammonia combustion plant ( | 12-31-2015 |
20160200575 | BASKET-LIKE DEVICE HAVING WALL INSULATION | 07-14-2016 |
423393000 | Utilizing nitrogen oxide as reactant | 2 |
20100080747 | PURIFYING CARBON DIOXIDE AND PRODUCING ACID - Carbon dioxide is purified by processes employing NOx-rich sulfuric acid that can be formed by removal of SO | 04-01-2010 |
20120207665 | TREATMENT OF NOx-CONTAINING GAS STREAMS - Methods and systems for treating a gas stream comprising NO | 08-16-2012 |
423394200 | Purification or recovery | 3 |
20100189623 | METHOD FOR THE RECOVERY OF MINERAL ACIDS FROM SALINE SOLUTIONS - The invention relates to a process for recovering acids from product streams of organic syntheses, which comprises the steps
| 07-29-2010 |
20130259793 | Method for Obtaining or Recovering Nitric Acid and Hydrofluoric Acid from Solutions of Stainless Steel Pickling Systems - A method for obtaining or recovering acids, in particular nitric acid and hydrofluoric acid, from solutions and/or metal salts of these acids containing solutions, comprising the steps of: a) spray-drying the solutions at temperatures below the decomposition temperature of the acids, the requisite energy for which is introduced via a gaseous heat-transfer medium, in order to obtain dry metal salts and gaseous acids; b) absorbing the gaseous acids formed in step a); c) separating out the dry metal salts formed in step a); optionally d) roasting the dry metal salts obtained in step a) at temperatures in the range from 400 to 900° C., in order to obtain metal oxides and gaseous acids; and e) absorbing the gaseous acids formed in step d). | 10-03-2013 |
20160016798 | A method for purification of circulating leaching solutions from phosphates and fluorides - The present invention relates to a method for purification of acidic solutions of salts, in particularly those formed in the course of complex apatite processing yielding rare-earth metal (REM) concentrate from phosphorus, fluorine and alkali metals impurities comprising precipitation of phosphorus and fluorine in the form of calcium phosphates and fluorides and alkali metals in the form of silicofluorides of alkali metals. In some embodiments before the precipitation of calcium phosphates and fluorides and silicofluorides of alkali metals, acid is selectively extracted into an organic extractant, and after the precipitation of calcium phosphates and fluorides and silicofluorides of alkali metals the acid is may be re-extracted from the extractant into an aqueous solution. Methods allow for the removal of phosphorus, fluorine and alkali metals impurities and regeneration of the acid. | 01-21-2016 |
423395000 | Nitrate | 17 |
20090130016 | Doped thermionic cathode and method of making doped thermionic cathode - Provided is a thermionic cathode doped with an increased binding energy hydrogen species and a method of making the doped thermionic cathode. | 05-21-2009 |
20100290974 | TITANIUM DIOXIDE COATING METHOD AND THE ELECTROLYTE USED THEREIN - A titanium dioxide coating method is disclosed. An electrolyte containing Ti | 11-18-2010 |
20110206595 | PURIFICATION OF BARIUM ION SOURCE - A method of preparing purified barium nitrate includes precipitating barium nitrate crystals from a solution, and washing the barium nitrate crystals with an aqueous solution including at least 10 wt % nitric acid. | 08-25-2011 |
20120201737 | Process For Production Of Commercial Quality Potassium Nitrate From Polyhalite - A method for the production of KNO | 08-09-2012 |
20130149229 | NITROGEN FIXATION BY TITANIUM DIOXIDE - In various embodiments, the present disclosure provides a method of fixing nitrogen. An amount of titania catalyst is provided and contacted with a feed stream that includes nitrogen. The titania catalyst is heated. The heated titania catalyst fixes nitrogen in the feed stream to form nitrogen products, such as nitrates. The nitrogen products are then removed from the titania catalyst. In some examples, the titania catalyst is treated with a base. In further examples, the catalytic process is carried out in the absence of light for photochemically activating the titania catalyst. | 06-13-2013 |
20130323156 | METHOD AND APPARATUS FOR SEQUENCING-BATCH PURIFICATION OF POTASSIUM NITRATE FROM SOLID WASTE PRODUCED BY GLASS-STRENGTHENING PROCESS - Provided is a method and an apparatus for purifying potassium nitrate from the solid waste produced by a chemical glass-strengthening process. In the method, the solid waste is melted into a liquid waste at first. Potassium nitrate of various purity grades can be obtained by batch processing the liquid waste through stepwise cooling processes of cooling the liquid waste to a first temperature facilitating the potassium nitrate contained in the liquid waste to be crystallized at a first rate and then cooling the liquid waste to a second temperature close to the freezing point of the potassium nitrate at a second rate that is slower than the first rate. The recovered potassium nitrate from the solid waste can be recycled and reused. | 12-05-2013 |
20140147367 | CRYSTALLIZATION APPARATUS - A reaction-crystallization apparatus for carrying out reaction and/or solvent extraction and/or crystallization of soluble salts has an upper section having a top and a decanter. The decanter has a vertical vessel having a horizontal weir at the top of the upper section. The top of the upper section has an outlet for removing a light phase at the top of the decanter. The apparatus has a lower section, including a crystallizer. The crystallizer includes: a coaxial draft tube; a feed pipe; an agitator inside the draft tube; and at least one outlet at the bottom for crystal slurry removal. The apparatus has an intermediate section sandwiched between the lower section and the upper section such that the sections are in fluid communication and includes at least one coaxial vertical baffle with a gap between the draft tube and the coaxial vertical baffle and is adjustable by moving the baffle. | 05-29-2014 |
20150329370 | RECOVERY OF BROMIDE FROM SULFATE COMPRISING AQUEOUS STREAMS - A solvent extraction process for recovering bromide from a sulfate-containing aqueous stream, the process comprises an extraction step wherein said aqueous stream is mixed with an extraction medium comprising a tertiary amine extractant dissolved in one or more water-immiscible organic solvents, wherein said mixing is carried out in a strongly acidic environment, thereby forming bromide-containing extract and a raffinate with a reduced bromide level, wherein the bromide-containing extract is optionally treated to further minimize the presence of sulfate and is subsequently combined with an aqueous calcium source to form calcium bromide. | 11-19-2015 |
20160159659 | ANION-CONDUCTING MATERIAL AND METHOD FOR MANUFACTURING SAME - An anion conductive material consists of a low-regularity layered double hydroxide having ion conductivity enhanced by delamination of a layer structure of a regular layered double hydroxide. | 06-09-2016 |
423396000 | Ammonium containing | 4 |
20100047149 | METHODS FOR PREPARING COMPOSITIONS COMPRISING AMMONIUM NITRATE DOUBLE SALTS - Methods for the production of ammonium sulfate nitrate include (a) providing at a temperature of less than about 175° C. a melt including ammonium nitrate, ammonium sulfate, and water and the water content is greater than about 2 wt % based on the total weight of ammonium nitrate, ammonium sulfate and water in the melt, and (b) solidifying from the melt 1:2 ANS double salt by cooling at least a portion of the melt at a rate of less than about 100° C./min. | 02-25-2010 |
20110182799 | SEQUESTRATION OF A GAS EMITTED BY AN INDUSTRIAL PLANT - A method of sequestering a multi-element gas emitted by an industrial plant is described herein, the method comprising: contacting a solution, including a first reactant comprising a multi-element gas emitted by an industrial plant and at least one gas absorber comprising nitrogen, for example ammonia or an amine, with a solid, including a second reactant, under conditions that promote a reaction between the first reactant and the second reactant to provide a first product, which incorporates one or more elements of the multi-element gas, thereby sequestering the multi-element gas. | 07-28-2011 |
20130149230 | INTEGRATED PROCESS FOR PRODUCING AMMONIUM NITRATE - A process for producing ammonium nitrate is disclosed and in which: | 06-13-2013 |
20130287670 | PROCESS FOR PRODUCING AMMONIUM NITRATE - A process for producing ammonium nitrate is disclosed, which process comprises exposing a gaseous oxidiser feed composed at least substantially of ammonia, steam and an oxidising gas to conditions whereby the ammonia is oxidised to produce a reaction mixture including nitrogen monoxide and water vapour. The reaction mixture is cooled in a heat exchanger whereby the nitrogen monoxide is oxidised, the water vapour is condensed and the products of the nitrogen monoxide oxidation react with and are absorbed by the condensed water to form a nitric acid stream, with substantially all of the nitrogen monoxide in the reaction mixture being converted to nitric acid. The nitric acid stream is reacted with a stream of ammonia to form the ammonium nitrate. | 10-31-2013 |
423397000 | Utilizing ammonium or metal nitrate as reactant | 4 |
20110014110 | Solid Hollow Fiber Cooling Crystallization Methods - A solid hollow fiber cooling crystallizer and method for crystallizing aqueous and organic solutions are provided. The solid hollow fiber crystallizer (SHFC) for carrying out cooling crystallization of inorganic/organic microsolutes/macrosolutes from solution generally includes a bundle of non-porous hollow fibers mounted within a shell where a feed solution for crystallization flows through the lumen side of the hollow fibers and a cooling solution flows through the shell side to form nuclei and subsequently crystals in the feed solution at a temperature below its saturation temperature. The solid hollow fiber crystallizer may be combined with a mixing device, such as a completely stirred tank or static mixer, to further effectuate crystallization. The solid hollow fiber crystallizer may be operated in a number of modes including feed recycle mode, once through mode, SHFC-in-line static mixer in series mode, and SHFC-CST in series mode. The advantages of solid hollow fiber cooling crystallization in comparison to conventional crystallization processes include improved temperature control between crystallizing solution and coolant, higher nucleation rates, improved control of crystal size and crystal size distribution, smaller crystal size, capability for decoupling crystal nucleation and crystal growth, decreased fouling of process equipment, and improved process scale-up. | 01-20-2011 |
20120195818 | Polyhalite IMI Process For KNO3 Production - A process for producing KNO3 from polyhalite to is disclosed. In a preferred embodiment, the process comprises steps of (a) contacting polyhalite with HNO3; (b) adding Ca(OH)2 to the solution, thereby precipitating as CaSO4 at least part of the sulfate present in said solution; (c) precipitating as Mg(OH)2 at least part of the Mg2+ remaining in said solution by further addition of Ca(OH)2 to the remaining solution; (d) concentrating the solution, thereby precipitating as a sulfate compound at least part of the sulfate remaining in solution; (e) separating at least part of the NaCl from the solution remaining; and (f) crystallizing as solid KNO3 at least part of the K+ and NO3-contained in the solution. The process enables direct conversion of polyhalite to KNO3 of purity exceeding 98.5% and that is essentially free of magnesium and sulfate impurities. | 08-02-2012 |
20140127117 | PREPARATION OF SUSPENSIONS - A method for preparing a suspension of LDH particles comprises the steps of preparing LDH precipitates by coprecipitation to form a mixture of LDH precipitates and solution; separating the LDH precipitates from the solution; washing the LDH precipitates to remove residual ions; mixing the LDH precipitates with water; and subjecting the mixture of LDH particles and water from step (d) to a hydrothermal treatment step by heating to a temperature of from greater than 80° C. to 150° C. for a period of about 1 hour to about 48 hours to form a well dispersed suspension of LDH particles in water. | 05-08-2014 |
20150093317 | Method of Fabricating High-Temperature Anti-Sintering CO2 Capture Agent - A novel method for making a CO | 04-02-2015 |
423400000 | Binary compound (oxide of nitrogen) | 19 |
20090238749 | Method for purification of nitrogen oxide and apparatus for purfication of nitrogen oxide - A nitrogen oxide purifying apparatus includes a gas absorption vessel ( | 09-24-2009 |
20100150812 | INDIRECTLY HEATED TEMPERATURE CONTROLLED ADSORBER FOR SORBATE RECOVERY - Systems and processes are provided that relate to the recovery of sorbates in processes utilizing temperature controlled adsorption. Sorbate recovery can include providing a temperature controlled adsorber that is undergoing a regeneration cycle after undergoing an adsorption cycle. The temperature controlled adsorber can have one or more adsorption flow passages and one or more heat transfer flow passages. The one or more adsorption flow passages can contain an adsorptive material coating with a sorbate adsorbed thereto. A heating fluid can be provided to the one or more heat transfer flow passages of the temperature controlled adsorber. A regeneration stream can be provided to the one or more adsorption flow passages of the temperature controlled adsorber. The adsorptive material coating can be regenerated by removing the sorbate from the temperature controlled adsorber to produce a regeneration effluent stream. | 06-17-2010 |
20110286908 | High Concentration NO2 Generating System and Method for Generating High Concentration NO2 Using the Generating System - A high concentration NO | 11-24-2011 |
20120141351 | CONTROLLING THE EMISSION OF VOLATILE ORGANIC COMPOUNDS FROM EQUIPMENT FOR RECLAIMING OILS - The emission of volatile organic compounds from apparatus for reclaiming used oils is controlled. Both the apparatus for reclaiming the used oils and the apparatus configured to control the emission of volatile organic compounds that are released at the reclaiming apparatus can be located on an over-the-road vehicle. The apparatus for reclaiming the used oils can be configured to be operatively associated with an electric transformer for reclaiming used oils in the transformer. The volatile organic compounds released in the apparatus for reclaiming used oils can first be heated and thereafter passed through a catalytic oxidizer in the apparatus configured to control the emission of volatile organic compounds, and the volatile organic compounds converted to gaseous products that are free of volatile organic compounds to a selected degree. | 06-07-2012 |
20120164056 | GENERATION OF STERILANT GASSES AND USES THEREOF - The disclosure provides processes and systems for sterilizing an object using a sterilant gas. In some embodiments, the sterilant gas is produced by the thermal decomposition of a salt. Compositions to generate sterilant gasses are also disclosed. | 06-28-2012 |
20220135406 | NITRIC OXIDE GENERATION PROCESS CONTROLS - The present disclosure describes systems and methods for controlling the electrical generation of nitric oxide. In some aspects, a system for generating nitric oxide comprises a plasma chamber housing two or more electrodes in communication with a resonant high voltage circuit configured to send a signal to the plasma chamber for generating nitric oxide in a product gas from a flow of a reactant gas, and a controller configured to generate a pulse width modulation signal having multiple harmonic frequencies to excite the resonant high voltage circuit. The controller is configured to adjust the duty cycle of the pulse width modulation signal, the controller selecting the duty cycle based on a target voltage before plasma formation and a target current after plasma formation in the plasma chamber. | 05-05-2022 |
423402000 | Utilizing catalyst | 7 |
20100272626 | Microbial production of nitrous oxide coupled with chemical reaction of gaseous nitrous oxide - A bioreactor designed to produce N | 10-28-2010 |
423403000 | And ammonia as reactant | 6 |
20110200515 | CATALYST CONTAINMENT UNIT - A catalyst containment unit includes two concentric perforate members defining an annular space in which a particulate catalyst may be placed, and process fluid-impermeable end members mounted on the ends of the perforate members, wherein one end member extends across the unit to provide a closed end and the other end member closes the annular space thereby providing an open end through which gases may enter or exit the unit, and suspending means attached to one or both end members for securing the unit within an ammonia oxidation vessel. The unit may be suspended, for example, below a precious metal ammonia oxidation gauze pack and may contain a particulate ammonia oxidation catalyst or nitrous oxide abatement catalyst. A catalyst combination includes a precious metal ammonia oxidation catalyst gauze on a supporting framework and a particulate catalyst disposed in a catalyst containment unit. | 08-18-2011 |
423404000 | Catalyst is metal oxide | 5 |
20100158784 | AMMONIA OXIDATION CATALYSTS - Ammonia oxidation catalyst units comprising a pair of honeycomb-type blocks having interplaced between them a layer of a gas permeable material performing the function of radially mixing the gas flow, said blocks comprising an ammonia oxidation catalysts, and having height of less than 15 cm and the interplaced layer height of 3 to 0.5 cm. | 06-24-2010 |
20100247417 | MIXED METAL OXIDE CATALYST AND PRODUCTION OF NITRIC OXIDE BY OXIDATION OF AMMONIA - The present invention provides a catalyst for production of nitric oxide from ammonia and oxygen. The catalyst has the composition A | 09-30-2010 |
20100278709 | CATALYST FOR PRODUCTION OF NITRIC OXIDE - The present invention provides a catalyst for production of nitric oxide from ammonia and oxygen. The catalyst has the composition A | 11-04-2010 |
20120034148 | DEVICE AND PROCESS FOR CATALYTIC GAS PHASE REACTIONS AND USE THEREOF - Improved reactors for catalytic, exothermic gas phase reactions with, as seen in the flow direction of a feed gas, which contains at least one oxidant and at least one component to be oxidized, an entry zone ( | 02-09-2012 |
20160039674 | METHOD FOR OXIDIZING AMMONIA AND SYSTEM SUITABLE THEREFOR - A system suitable for oxidizing ammonia with oxygen in the presence of catalysts is described. The system includes a reactor equipped with at least one supply line for a reactant gas mixture and at least one discharge line for a process gas; a catalyst comprising at least one transition metal oxide that is not an oxide of a platinum metal; and a device for adjusting a molar ratio of oxygen to ammonia of less than or equal to 1.75 mol/mol in the reactant gas mixture by mixing an oxygen-containing gas stream having an O | 02-11-2016 |
423405000 | Nitric oxide (NO) | 6 |
20080274032 | Method for Isolating N2o - The present invention relates to a process for purifying a gas mixture G-0 comprising dinitrogen monoxide, at least comprising the absorption of the gas mixture G-0 in an organic solvent, subsequent desorption of a gas mixture G-1 from the laden organic solvent, absorption of the gas mixture G-1 in water and subsequent desorption of a gas mixture G-2 from the laden water, and also to the use of a purified gas mixture which comprises dinitrogen monoxide and is obtainable by such a process as an oxidizing agent for olefins. | 11-06-2008 |
20090136410 | Stabilization and ionic triggering of nitric oxide release - Provided is a method for producing nitric oxide that employs an ion exchange resin. Also provided is a method for producing nitric oxide that combines a salt with a gel or cream. A method is provided for producing nitric oxide that combines a Ph adjuster with a diazeniumdiolate-containing compound or composition. | 05-28-2009 |
20120114547 | STABILIZATION AND IONIC TRIGGERING OF NITRIC OXIDE RELEASE - Provided is a method for producing nitric oxide that employs an ion exchange resin. Also provided is a method for producing nitric oxide that combines a salt with a gel or cream. A method is provided for producing nitric oxide that combines a Ph adjuster with a diazeniumdiolate-containing compound or composition. | 05-10-2012 |
20120258034 | METHOD FOR GENERATING NITRIC OXIDE - The invention relates to a method for generating nitric oxide, in particular for therapeutic applications, which comprises the steps of: guiding a process gas into a reaction chamber | 10-11-2012 |
20140127118 | ENERGY EFFICIENT PROCESS FOR PRODUCING NITROGEN OXIDE - A process for producing NO gas from a feed flow of air or oxygen enriched air, by means of moving an electric arc through the air flow by using a magnetic field and AC or DC currents, in a reactor, wherein a pressure lower than 1 bar is applied, wherein the temperature in the exited arc is adjusted to be within the range of 3000 to 5000 Kelvin, and wherein the air flow is quenched by applying a spray of fine water droplets upstream or just downstream the arc, excess air feed or bypassed air to obtain a stable NO-containing plasma having a temperature below 2000 Kelvin. | 05-08-2014 |
20150030521 | Ammonia Oxidation Reactor With Internal Filter Element - A reaction vessel for oxidation of ammonia to nitrogen monoxide in the presence of a catalyst is provided. The catalyst can become dislodged during the oxidation. The reaction vessel includes a reactor body having a top portion, a bottom portion, and a middle portion. The top and middle portions cooperate to define a cavity where the ammonia is catalytically oxidized to provide the nitrogen monoxide. The reaction vessel also includes an internal filter element. The internal filter element includes a filter cage that defines an interior volume and a filter medium disposed adjacent to the filter cage. The internal filter element collects the catalyst dislodged during the oxidation. | 01-29-2015 |