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| Number | Title | Issue Date |
| 7771690 | Plenum crusher dust injection Methods for heating a solid material comprising a granular material are provided. Dust is removed from the granular material before it is heated. The dust is injected into the exhaust gas from the heater. The heated dust is recovered and combined with the heated gra... | 08/10/2010 |
| 7645435 | Sodium carbonate recovery from waste streams and impounded sodium carbonate decahydrate deposits A process is described for recovering sodium carbonate or other sodium-based chemicals from sodium-bearing streams, including in particular mine water, evaporative pond water and sodium carbonate decahydrate deposits, recycle and purge streams, and other waste strea... | 01/12/2010 |
| 7255841 | Sodium bicarbonate production method A method of producing sodium bicarbonate having a high degree of purity and obtaining a net reduction in effluent waste water, as compared to prior processes, when starting from trona ore is disclosed. The process entails utilizing the waste-water effluent stream fr... | 08/14/2007 |
| 7235247 | Pharmaceutical composition for application to mucosa The present invention provides a pharmaceutical composition for application to the mucosa to be used in drug therapy comprising a water-insoluble and/or water-low soluble substance, a medicament, and an aqueous medium, and having an osmotic pressure of less than 290... | 06/26/2007 |
| 7214355 | Production of lithium compounds directly from lithium containing brines Metal carbonates that are insoluble in water but that have a corresponding metal biocarbonate salt that is more than 75% by weight soluble in water are purified by preparing an aqueous slurry of the metal carbonate: introducing carbon dioxide gas to form a correspon... | 05/08/2007 |
| 7169735 | Catalyst and process for preparing the same The object of the present invention is to provide a catalyst that is highly active and capable of maintaining its activity for a long period of time even in a high-temperature environment. The present invention is a catalyst including: a porous carrier which is comp... | 01/30/2007 |
| 7169376 | Method for making hydrogen using a gold containing water-gas shift catalyst The present invention relates to a method for making hydrogen comprising contacting in a water-gas shift reaction zone a feed comprising carbon monoxide and water under water-gas shift conditions with an effective catalytic amount of a catalyst comprising highly dis... | 01/30/2007 |
| 7160638 | Fuel cell system and method for generating electrical energy using a fuel cell system A fuel-cell system, particularly a fuel-cell system for a drive system of a motor vehicle, includes an autothermic reformer unit configured to generate hydrogen from a raw material. The hydrogen is used to operate a fuel-cell unit disposed downstream of the reformer... | 01/09/2007 |
| 7157065 | Production of lithium compounds directly from lithium containing brines A continuous process for directly preparing high purity lithium carbonate from lithium containing brines by preparing a brine containing about 6.0 wt % lithium and further containing other ions naturally occurring in brines; adding mother liquor containing carbonate... | 01/02/2007 |
| 6994839 | Carbonate recycling in a hydrogen producing reaction A process for producing hydrogen gas from a reaction of an organic substance and a base with a recycling of a carbonate or bicarbonate by-product and a regeneration of the base. In one embodiment, reaction of an organic substance and a base produces hydrogen gas and... | 02/07/2006 |
| 6514475 | Process for the production of sodium carbonate anhydrate The invention is directed to a process for the production of sodium carbonate-anhydrate having a bulk density of at least 800 kg/m3, said process comprising: providing a suspension of solid sodium carbonate and/or solid sodium bicarbonate and/o... | 02/04/2003 |
| 6334990 | Formulation of potassium sulfate, sodium carbonate and sodium bicarbonate from potash brine A process for the preparation of potassium sulfate, sodium bicarbonate and sodium carbonate. The process involves the treatment of potash brines by the reaction of sodium chloride and potassium chloride with calcium sulfate and sodium sulfate. Syngenite p... | 01/01/2002 |
| 6334989 | Production of water-free soda A process is presented in which anhydrous soda is crystallized and worked up to produce anhydrous soda crystals with a bulk density from 1300 to 1600 kg/m3. The process is characterized in that a solvent is used that allows the crystals to be f... | 01/01/2002 |
| 6099817 | Process for preparing sodium carbonate A process for preparing sodium carbonate is provided in which sodium bicarbonate is heated to a temperature of between 80 and 250 ° C. and at a pressure between grater than 1 bar and 20 bars. The sodium bicarbonate may be heated in the presence of an act... | 08/08/2000 |
| 6066606 | Blooming type cleaning compositions including a system of amphoteric and nonionic surfactants The blooming type, hard surface cleaning concentrate compositions according to the invention comprise the following constituents: 0.1-10% wt. of a terpene containing solvent which desirably includes both pine oil and d-limonene; 0.1-12% wt. of at least one org... | 05/23/2000 |
| 6010675 | Method of and apparatus for removing carbon monoxide from gaseous media The concentration of carbon monoxide in a gaseous medium is reduced by selective catalytic oxidation in the presence of gaseous oxygen by passing the gaseous medium through a catalyst capable of oxidizing carbon monoxide in an exothermic reaction at tempe... | 01/04/2000 |
| 5989505 | Method for recovery of alkali values from trona using air stripping A process for recovery of alkali values from trona in which trona is dissolved, the sodium carbonate in the feed solution is converted to sodium bicarbonate by introducing carbon dioxide, sodium bicarbonate is crystallized and separated from a mother liqu... | 11/23/1999 |
| 5830422 | Method for production of sodium bicarbonate, sodium carbonate and ammonium sulfate from sodium sulfate A process for producing sodium bicarbonate and sodium carbonate. The process includes reacting within a reactor sodium sulfate in aqueous solution with ammonia and carbon dioxide to precipitate sodium bicarbonate and form a first mother liquor. The sodium... | 11/03/1998 |
| 5788947 | Method for the production of anhydrous alkali metal carbonates A method for producing anhydrous alkali metal carbonates by mixing sodium bicarbonate with a stoichiometric equivalent of an alkaline metal hydroxide in an aqueous solution which reacts in an exothermic reaction to produce a thermally stable alkaline comp... | 08/04/1998 |
| 5609838 | Equilibrium production of sodium carbonate from sodium bicarbonate A process for producing sodium carbonate and other sodium-based chemicals from an aqueous solution containing sodium bicarbonate by contacting an aqueous solution of a bicarbonate-containing composition with a gas that is predominately other than carbon d... | 03/11/1997 |
| 5562890 | Production of alkali metal carbonates A method of producing an alkali metal carbonate, e.g. sodium carbonate, comprises passing a solution or suspension of the alkali metal chloride and bicarbonate over an ion exchange resin which is chloride retaining and has a basicity greater than that of ... | 10/08/1996 |
| 5462693 | Air purifying agent and a process for producing same An air purifying agent comprising a carrier which contains short pulp fiber, on which one or more chemical components selected from the group consisting of acids, alkalis, oxidizing agents, reducing agents and antimicrobial components are supported. Accor... | 10/31/1995 |
| 5262134 | Process for producing sodium salts from brines of sodium ores A process is described for producing sodium-based chemicals from a brine containing sodium carbonate and sodium bicarbonate by heating the brine to evaporate water and drive off carbon dioxide and obtain a solution that will crystallize sodium sesquicarbo... | 11/16/1993 |
| 4743439 | Wet calcination of alkali metal bicarbonates in hydrophobic media A process for the wet calcination of sodium bicarbonate, sodium sesquicarbonate or mixtures thereof comprising forming a suspension of sodium bicarbonate, sodium sesquicarbonate or said mixture in a water-immiscible relative high boiling liquid, and heati... | 05/10/1988 |
| 4664893 | Method for the preparation of a bicarbonate sorbent in flue gas desulfurization A process for the dry carbonation of an alkali metal or ammonium carbonate, utilizing a low carbon dioxide-containing carbonating gas stream, and more particularly, a process for the production of a bicarbonate sorbent useful in the desulfurization of flu... | 05/12/1987 |
| 4652437 | Process for producing anhydrous sodium carbonate A process for producing anhydrous sodium carbonate by the pyrolysis of wet sodium bicarbonate, which comprises (a) a step of forming a complex salt selected from the group consisting of Na2 CO3.3NaHCO.sub.3 and Na2 CO... | 03/24/1987 |
| 4557910 | Production of soda ash from nahcolite Soda ash is prepared from dry-mined nahcolite ore by partially calcining the ore, dissolving the ore in aqueous solution, separating the resultant solution from the ore insolubles, crystallizing anhydrous sodium carbonate or sodium carbonate monohydrate, ... | 12/10/1985 |
| 4459272 | Dry carbonation process A process for the dry carbonation of an ammonium or alkali metal carbonate containing material, or a mixture thereof, for conversion to the corresponding bicarbonate containing material comprising reacting in the solid phase an ammonium and/or alkali meta... | 07/10/1984 |
| 4291002 | Process for producing sodium carbonate from complex brines A process for the production of sodium carbonate wherein sodium bicarbonate is recovered from a brine containing sodium carbonate by carbonation of the brine under controlled conditions. The sodium bicarbonate is crystallized from the carbonated brine in ... | 09/22/1981 |
| 4285925 | Process for the conversion of light ash to absorptive low bulk density alkali products A method for production of absorptive particles of Wegscheider's Salt (Na2 CO3.3NaHCO.sub.3) having low bulk density and acceptable flow properties, by reaction of anhydrous sodium carbonate particles with water and carbon dioxide is... | 08/25/1981 |
| 4283372 | Recovery of alkali values from sodium bicarbonate-containing ore with ammonia A method for recovering alkali value from sodium bicarbonate-containing ore by utilizing an aqueous solvent containing ammonia. The aqueous ammonia solvent is contacted with the ore to solubilize the sodium bicarbonate-containing ore. The alkali values in... | 08/11/1981 |
| 4252781 | Preparation of sodium carbonate anhydride A thick suspension of sodium carbonate anhydride is obtained by countercurrent contacting of a high pressure steam and a suspension of sodium bicarbonate or sodium sesquicarbonate in a concentrated solution of sodium carbonate. The decomposition reaction ... | 02/24/1981 |
| 4242328 | Process and compositions Dried amorphous aluminum hydroxide gels having substantial acid reacting capability over an extended period of time are prepared by drying the gel after contacting the aqueous liquid gel with an inert organic solvent of sufficient solubility in water to r... | 12/30/1980 |
| 4241041 | Methods for the recovery of sulfur components from flue gas and recycle sodium sulfite by reduction-smelting and carbonating to strip hydrogen sulfide An improved method for recovering sulfur from flue gas which contains sulfur dioxide formed from burning sulfur containing fuels. The method first involves the reduction burning of auxilary fuel in the presence of sodium sulfite to convert it to smelt con... | 12/23/1980 |
| 4238458 | Process for the production of a basic carbonate of aluminum and an alkali or alkali earth metal The process of the present invention resides in the production of an extremely pure basic aluminum-sodium carbonate of the dawsonite type. In the process of the present invention, aluminum hydroxide is reacted with an aqueous sodium bi-carbonate solution ... | 12/09/1980 |
| 4172017 | Process for producing chlorine from ammonium chloride A process for producing chlorine from ammonium chloride which comprises vaporizing ammonium chloride, contacting the vapors with a metal selected from the group consisting of tin, zinc and cadmium whereby a metal chloride is formed and then electrolyzing ... | 10/23/1979 |
| 4115525 | Absorptive low bulk density product from sodium sesquicarbonate Conversion of sodium sesquicarbonate particles to particles of lower bulk density, as low as 180 grams per liter, with high absorption property capable of absorbing as much as 40 percent of wetting agent and with good resistance to breakage and attrition ... | 09/19/1978 |
| 4059681 | Stable dried aluminum hydroxide gel Stable dried aluminum hydroxide gels possessing the high acid reactivity of liquid aluminum hydroxide gel are prepared by drying the gel from non-aqueous solvents.... | 11/22/1977 |
| 4053568 | Process for the preparation of antacid aluminum hydroxycarbonate hydrate A basic aluminum hydroxycarbonate hydrate, usable as an antacid, is prepared by simultaneously adding aqueous solutions of aluminum sulfate and alkali hydrogen carbonate or alkali carbonate to water while maintaining a neutral or weakly alkaline pH and ad... | 10/11/1977 |
| 4053579 | Method for manufacture of sintered alumina from ammonium aluminum carbonate hydroxide Aluminum carbonate hydroxide ammonium, a new compound, is produced by causing a solution of ammonium hydrogencarbonate to be reacted upon by a soluble aluminum salt. -Alumina is obtained by thermal decomposition of this ammonium aluminum carbonate ... | 10/11/1977 |
