Class 23/302T - Sodium compounds

Subclass of Class 23 - Chemistry: physical processes
No. of patents: 167
Last issue date: 07/05/2011

Number	Title	Issue Date
7972391	Salt brine capillary crystallization This invention relates to a method of crystallization of salt from brine on top of any soil surface through airborne brine droplet crystallization, controlled moisture depth, capillary action and enhanced renewable energy to grow a layer of salt which can be collect...	07/05/2011
7713312	Process for producing alkali metal hydrogencarbonate A process for producing an alkali metal hydrogencarbonate by reacting an aqueous solution containing alkali metal ions with carbon dioxide in a prescribed crystallizer to precipitate crystals of an alkali metal hydrogencarbonate, and in this process a part of a slur...	05/11/2010
7655053	Process for sodium carbonate crystals from solutions A method of producing sodium carbonate from any solution or carbonate mineral, especially trona, that includes: removing calcium and magnesium compounds from an input solution; passing the input solution to a precipitator, adding methanol of 30% to 70% by volume to ...	02/02/2010
7621968	Process for producing low sodium sea salt from seawater There is provided a low sodium sea salt and a method for producing the same. A first amount of natural seawater containing sodium, chloride, potassium, magnesium, sulfate and other trace minerals is introduced into a containment structure which is periodically expos...	11/24/2009
7427302	Method of manufacturing micro-disperse particles of sodium borohydride A compact solid source of hydrogen gas, where the gas is generated by contacting water with micro-disperse particles of sodium borohydride in the presence of a catalyst, such as cobalt or ruthenium. The micro-disperse particles can have a substantially uniform diame...	09/23/2008
7410627	Sodium carbonate and sodium bicarbonate production A method for solution mining nahcolite, capable of extracting nahcolite from geological formations lean in nahcolite comprising injecting high pressure water (which may include recycled aqueous solution of bicarb and sodium carbonate) at a temperature of at least 25...	08/12/2008
7166719	Fluorinated photosensitizers related to chlorins and bacteriochlorins for photodynamic therapy Provided herein are compounds for detection, diagnosis and treatment of target tissues or target compositions, including hyperproliferative tissues such as tumors, using photodynamic methods. In particular, photosensitizer compounds that collect in hyperproliferativ...	01/23/2007
7160566	Food surface sanitation tunnel This invention is a modular, adjustable, easy to maintain, portable or fixed food sanitation tunnel, comprising an enclosing means for subjecting food to sanitizers including UV light, ozone, hydroperoxides, superoxides and hydroxyl radicals, and a method for using ...	01/09/2007
7122249	Abrasion-resistant agglomerate mineral substance granule, powder comprising such granules and production method therefor Granule comprising an agglomerate of particles of a mineral substance. The agglomerate is coated with a monolithic outer layer, which provides it with improved abrasion resistance. Powder comprising granules according to the invention. Process for manu...	10/17/2006
7045104	Volume reduction of aqueous waste by evaporative crystallization of burkeite and sodium salts A method of treating aqueous salt solutions to provide a solution suitable for vitrification to a stable glass matrix for long term storage is described. In particular, salt solutions composed of aqueous nuclear waste materials are suitable for treatment by the desc...	05/16/2006
7018594	Crystallization of sodium carbonate decahydrate from liquors supersaturated in sodium bicarbonate A process for recovering sodium carbonate decahydrate crystals from solutions and mother liquors supersaturated in sodium bicarbonate concentration. Feed liquors containing higher levels of sodium bicarbonate than traditionally fed to a sodium carbonate decahydrate ...	03/28/2006
7014832	Simultaneous recovery of potassium chloride and KCL enriched edible salt The present invention relates to recovery of industrial grade potassium chloride and low sodium edible salt from bittern as part of an integrated process. The process comprises, mixing low sulphate concentrated feed bittern (a by-product of salt industry) of density...	03/21/2006
6955791	Environmental air sterilization system The present invention is a high volume, wall-mountable air sanitation apparatus for disinfecting and removing VOCs from air with high energy UV light and ozone. The apparatus has a powerful fan and an elongated UV light source and target for use with the movement of...	10/18/2005
6692716	Method of formulating alkali earth salts Methodology for formulating sodium bicarbonate and potassium sulfate. In one embodiment, sodium sulfate and ammonium bicarbonate are reacted to form sodium bicarbonate with the remaining liquor or brine treated with sulfuric acid to remove carbonates with...	02/17/2004
6689334	Process for reducing or avoiding foam production during chemical and physical materials conversion processes The production of foam which occurs in many chemical and physical materials conversion processes can be avoided by performing the materials conversion process in an ascending jet reactor, including a baffle-free container with a tapering lower section, pr...	02/10/2004
6667021	Method for producing enhanced sodium carbonate crystals for making sodium bicarbonate n the manufacture of sodium carbonate having increased CO2 uptakes the carbonation reaction to form sodium bicarbonate is enhanced by the addition of particular amounts of a cationic quaternary amine, selected from the family of dialkylethoxyla...	12/23/2003
6660049	Process for control of crystallization of inorganics from aqueous solutions Process of crystallization of sodium bicarbonate from solution mined Nahcolite pregnant liquor comprising the use of from about 2 to 100 parts per million of lecithin, introduced full strength, made miscible in water with a soap or detergent, saponified w...	12/09/2003
6652603	Process for removing sodium sulfate from nickel hydroxide effluent streams A method for removing sodium sulfate from nickel and ammonia containing aqueous effluents. The effluents, typically from a nickel hydroxide production process, are cooled to or below 30° C. to crystallize and precipitate the sodium sulfate and dewater th...	11/25/2003
6576209	Process for producing sodium salts A process for producing sodium salts, which comprises adding solid sodium carbonate to a first aqueous solution containing sodium carbonate and sodium hydrogencarbonate, to prepare a second aqueous solution, precipitating, separating and recovering from t...	06/10/2003
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
6500216	Method and apparatus for desalinating sea water, natural salt and fresh water A method and an apparatus of producing natural salt or fresh water by treating sea water in an extremely short period of time and with high efficiently. The distilled water and salt components are treated for expediting crystallization of the salt compone...	12/31/2002
6475458	Method for formulating food grade sodium bicarbonate There is disclosed a method for formulating food grade sodium bicarbonate by purification of a sodium bicarbonate liquor where an initial saturated feedstock of sodium bicarbonate which contains sodium sulfate as an impurity is filtered to remove the impu...	11/05/2002
6464736	Recrystallization process The present invention provides a process for producing crystals of a polymorphic compound in a first crystal structure by introduction of the compound in a second crystal structure into a saturated brine solution of the compound under conditions in which ...	10/15/2002
6436154	Use of dodecylbenzene sulfonic acid or salt as a scale inhibitor The formation of scale on equipment surface in contact with sodium alkali containing brines is inhibited by the addition of an alkylbenzene sulfonic acid or salt thereof to the brines....	08/20/2002
6340452	Sodium percarbonate and process for producing it The invention relates to a novel sodium percarbonate in the form of agglomerates of small crystals. The average particle size of the agglomerates is greater than 600 μm. The apparent density of the agglomerates is between 0.75 g/cm3 and 1.1 g/...	01/22/2002
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
6284005	Sodium carbonate recrystallization The present invention provides a process for producing sodium carbonate monohydrate crystals by introduction of anhydrous sodium carbonate into a saturated sodium carbonate brine solution under conditions in which sodium carbonate monohydrate formation is...	09/04/2001
6270740	Method of producing modified sodium carbonate crystals for the production of sodium bicarbonate An improved method of purifying sodium carbonate from a natural source whereby a dissolved sodium carbonate product is treated with a cationic compound, such as a quaternary amine, to react with carbon-containing contaminants and filtering the product. Th...	08/07/2001
6251346	Solution mining of carbonate/bicarbonate deposits to produce soda ash A solution mining process for recovering sodium values from an underground deposit of a sodium bicarbonate containing ore is disclosed. The process involves contacting the ore with an aqueous sodium carbonate-containing solution to produce a dilute brine ...	06/26/2001
6207123	Process for producing sodium salts A process for producing sodium salts, which comprises adding solid sodium carbonate to a first aqueous solution containing sodium carbonate and sodium hydrogencarbonate, to prepare a second aqueous solution, precipitating, separating and recovering from t...	03/27/2001
6180074	Method for processing flue gases containing sulphur oxides A method for removing contaminants, such as sulfur dioxide, mercury and hydrochloric acid, out of flue gases is provided, said method including the steps of: treating the flue gases with a reagent, such as sodium carbonate, sodium bicarbonate and ammonium...	01/30/2001
6162263	Method for producing and shipping metal cyanide salts Metal cyanide suitable for shipment is prepared by introducing an aqueous metal cyanide feed stream to a crystallizer to form a slurry of metal cyanide crystals in their mother liquor. The crystallization step occurs at a temperature between 30° C. and 7...	12/19/2000
6126702	Apparatus and method for treating sesquisulfate waste streams The specification discloses an apparatus and method for treating a slurry containing sodium sesquisulfate to recover sulfate and acid constituents therefrom. The apparatus includes a treatment vessel having a separation wall delineating a clarifying zone ...	10/03/2000
6113657	Purification of caustic soda In a process for preparing crystalline NaOH.3.5H2 O, NaOH.3.5H2 O is allowed to crystallize from an aqueous sodium hydroxide solution which contains sodium chloride and is saturated in respect of NaOH.3.5H2 O and the cryst...	09/05/2000
6099595	Process for the preparation of crystalline sodium silicates The invention relates to a process for the preparation of crystalline sodium silicates having a sheet structure and high δ phase content from water glass, which has been prepared hydrothermally, by dehydration of the water glass and subsequent crystalliz...	08/08/2000
6042622	Process for crystallization of alkali metal bicarbonate salts Alkali metal bicarbonate salts, e.g., sodium bicarbonate, are crystallized from aqueous solutions thereof in the presence of a crystal growth promoting amount of lecithin or lecithin containing compositions. Alkali metal bicarbonate salts include sodium b...	03/28/2000
6036733	Process for the preparation of crystalline sodium silicates The invention relates to a process for the preparation of crystalline sodium silicates having a sheet structure and high δ phase content from water glass, which has been prepared predominantly hydrothermally, by dehydration of the water glass and subsequ...	03/14/2000
6022385	Process for the manufacture of sodium carbonate crystals from minerals or solutions A method of producing sodium carbonate crystals from a sodium carbonate-containing solution including the steps of passing the sodium carbonate-containing solution to a precipitator, adding methanol to the sodium carbonate-containing solution in the preci...	02/08/2000
5955043	Production of sodium carbonate from solution mine brine A process for forming useful sodium salts by uniquely processing dilute mine brines obtained by solution mining of a sodium bicarbonate containing ore deposit with an aqueous solvent is disclosed. The dilute mine brine is reduced in sodium bicarbonate con...	09/21/1999
5911959	Method for purification and production of saline minerals from trona Disclosed are a variety of processes for the purification of saline minerals and in particular, trona. Some of the processes include a combination wet and dry recovery process which results in high recovery and purification at relatively low cost. The dry...	06/15/1999

«First «Previous1 2 3 4 5 Next»Last»

PatentStorm

Quotables

PatentStorm News

Class 23/302T - Sodium compounds