子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Apparatus for recovering anhydrous sodium sulphate and similar substances | US39291841 | 1941-05-10 | US2334563A | 1943-11-16 | IRVIN LAVINE; SCHULTZ ROBERT F |
| 82 | Recovery of sodium carbonate from brine | US47110230 | 1930-07-26 | US1869621A | 1932-08-02 | LUDWIG ROSENSTEIN; BELL KENNETH G |
| 83 | Process of manufacturing detergents. | US1912682671 | 1912-03-09 | US1046847A | 1912-12-10 | ORMANDY WILLIAM REGINALD; SPENSLEY JACOB WILLIAM |
| 84 | Process of making alkaline carbonates and acetone | US430734D | US430734A | 1890-06-24 | ||
| 85 | Improvement in the mildfactube of soda and potash | US78375D | US78375A | 1868-05-26 | ||
| 86 | Improvement in horse-collars | US57458D | US57458A | 1866-08-28 | ||
| 87 | Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale | US10622162 | 2003-07-15 | US07128886B2 | 2006-10-31 | Max E. Ramey; John S. McEwan; Kevin L. Green; Charles L. Yates; Allan L. Turner; Michael A. Rockendal; Irvin P. Nielsen; Michael P. Hardy; Rex Goodrich |
| 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 250° F. into the formation, dissolving nahcolite in the hot water to form a production solution and recovering the production solution. The invention also includes the processing of the production solution to provide sodium carbonate and, optionally, sodium bicarbonate, comprising: decomposing the sodium bicarbonate portion of the hot aqueous production solution to form a hot aqueous solution of sodium carbonate; evaporating water from the hot aqueous solution comprising sodium carbonate to form a concentrated solution of sodium carbonate; producing sodium carbonate monohydrate from the concentrated solution of sodium carbonate by crystallization; and dewatering and calcining the sodium carbonate monohydrate to produce anhydrous sodium carbonate. | ||||||
| 88 | Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale | US10622162 | 2003-07-15 | US20040026982A1 | 2004-02-12 | Max E. Ramey; John S. McEwan; Kevin L. Green; Charles L. Yates; Allan L. Turner; Michael A. Rockendal; Irvin P. Nielsen; Michael P. Hardy; Rex Goodrich |
| 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 250null F. into the formation, dissolving nahcolite in the hot water to form a production solution and recovering the production solution. The invention also includes the processing of the production solution to provide sodium carbonate and, optionally, sodium bicarbonate, comprising: decomposing the sodium bicarbonate portion of the hot aqueous production solution to form a hot aqueous solution of sodium carbonate; evaporating water from the hot aqueous solution comprising sodium carbonate to form a concentrated solution of sodium carbonate; producing sodium carbonate monohydrate from the concentrated solution of sodium carbonate by crystallization; and dewatering and calcining the sodium carbonate monohydrate to produce anhydrous sodium carbonate. | ||||||
| 89 | Calcining apparatus and process of use | US10394596 | 2003-03-21 | US20030215379A1 | 2003-11-20 | Dale Lee Denham JR.; Rudolph Pruszko; Wayne C. Hazen |
| Disclosed is an apparatus for the calcination of materials using low temperature heating and indirect heating for calcination. Also disclosed are a variety of processes for calcination of materials which have-reduced emissions of pollutants compared to conventional processes. | ||||||
| 90 | Process for producing sodium salts | US09749546 | 2000-12-28 | US06576209B2 | 2003-06-10 | Kunio Tanaka; Shintaro Kikuchi |
| 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 the second aqueous solution sodium sesquicarbonate crystals containing at least 50 mol % of the sodium hydrogencarbonate component contained in the second aqueous solution, and further recovering sodium carbonate from a mother liquor remaining after separating the sodium sesquicarbonate crystals from the second aqueous solution. | ||||||
| 91 | Calcining apparatus and process of use | US10263335 | 2002-10-01 | US20030091486A1 | 2003-05-15 | Dale Lee Denham JR.; Rudolph Pruszko; Wayne C. Hazen |
| Disclosed is an apparatus for the calcination of materials using low temperature heating and indirect heating for calcination. Also disclosed are a variety of processes for calcination of materials which have reduced emissions of pollutants compared to conventional processes. | ||||||
| 92 | Process for producing sodium salts | US09749546 | 2000-12-28 | US20010001037A1 | 2001-05-10 | Kunio Tanaka; Shintaro Kikuchi |
| 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 the second aqueous solution sodium sesquicarbonate crystals containing at least 50 mol % of the sodium hydrogencarbonate component contained in the second aqueous solution, and further recovering sodium carbonate from a mother liquor remaining after separating the sodium sesquicarbonate crystals from the second aqueous solution. | ||||||
| 93 | Process for producing sodium salts | US09256212 | 1999-02-24 | US06207123B1 | 2001-03-27 | Kunio Tanaka; Shintaro Kikuchi |
| 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 the second aqueous solution sodium sesquicarbonate crystals containing at least 50 mol % of the sodium hydrogencarbonate component contained in the second aqueous solution, and further recovering sodium carbonate from a mother liquor remaining after separating the sodium sesquicarbonate crystals from the second aqueous solution. | ||||||
| 94 | Installation and process for the crystallization of an inorganic substance and process and installation for the crystallization of sodium carbonate monohydrate | US29423 | 1993-03-09 | US5396863A | 1995-03-14 | Leon Ninane; Claude Breton |
| Installation for the crystallization of an inorganic substance in a crystal slurry, by desupersaturation of a supersaturated solution, the installation comprising a crystallization chamber which has a vertical axis and is divided into a central zone (4) and an annular zone (5), a device (9, 10) designed to bring about a vertical translation of the slurry in the central zone (4) and a translation in the opposite direction in the annular zone (5), a device (8) for withdrawing slurry, comprising a tube (23, 24) which opens into one of the abovementioned zones, a member (14) for mechanical shearing of the slurry, comprising, a disc (17) carrying a ring of shearing teeth (19), and a tube (6, 31) passing through the cover (30) and serving to introduce anhydrous sodium carbonate, the tube (31) having a prolongation inside the crystallization chamber, over which prolongation a film of water is caused to circulate. | ||||||
| 95 | Process for producing sodium salts from brines of sodium ores | US40059 | 1993-03-30 | US5283054A | 1994-02-01 | William C. Copenhafer; David E. Smith; Gerald F. Niedringhaus |
| A process for producing valuable sodium-based chemicals from a brine containing sodium carbonate and sodium bicarbonate, such as those containing from about 8% to about 20% total alkali obtained by contacting water with an underground trona formation by heating the brine at about 100.degree. C. to about 140.degree. C. to evaporate water, convert sodium bicarbonate to sodium carbonate and to drive off resulting carbon dioxide, reacting the brine with reduced sodium bicarbonate with an aqueous sodium hydroxide solution in amounts to convert essentially all of the remaining sodium bicarbonate in the brine to sodium carbonate, cooling to about 5.degree. C. to about 25.degree. C. to precipitate sodium carbonate decahydrate crystals, separating the crystals from their mother liquor, melting the separate crystals to form a sodium carbonate solution, heating the solution to from above about 60.degree. C. to below 110.degree. C. to evaporate water, precipitating sodium carbonate monohydrate crystals, separating the sodium carbonate monohydrate crystals from their mother liquor and calcining them to soda ash which is recovered as a product. The sodium hydroxide used in the above process is formed preferably by causticizing sodium carbonate values with calcium oxide or calcium hydroxide in a separate but parallel operating causticizing circuit. | ||||||
| 96 | Dry detergent compositions | US802918 | 1991-12-06 | US5198145A | 1993-03-30 | Walter Lobunez; David Goldstein |
| Dry-blended detergent formulations are prepared by absorbing liquid surfactant on absorptive soda ash derived from the dehydration of sodium carbonate decahydrate. | ||||||
| 97 | Dehydration process | US880868 | 1978-02-24 | US4179493A | 1979-12-18 | Abraham Sadan |
| Disclosed is a process for the production of partially dehydrated or anhydrous salts from higher hydrates of the same salt, utilizing solar energy. Hydrated salts which have an increasing solubility with an increase of temperature, possessing a transition temperature from the existing high hydrated form to the desired one in the range of between about 30.degree. C. to about 100.degree. C. are partially or completely dehydrated in a solar pond having a non-convecting characteristic. Examples of salts produced according to the present invention are: anhydrous sodium sulfate from sodium sulfate decahydrate, magnesium sulfate monohydrate from magnesium sulfate heptahydrate, sodium carbonate monohydrate from sodium carbonate decahydrate and sodium borate pentahydrate from sodium borate decahydrate. | ||||||
| 98 | Absorptive low bulk density product from sodium sesquicarbonate | US356663 | 1973-05-02 | US4115525A | 1978-09-19 | Alan B. Gancy; Rustom P. Poncha |
| 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 and with mild alkalinity of less than 9.9 pH to a pH approaching 9.4 without loss of particulate identity, by passing the particles through a reaction zone at a temperature of 70.degree. to 105.degree. C. and introducing a gas mixture containing 15-85 percent CO.sub.2 and 15-80 percent water vapor and maintaining the gas mixture in contact with the particles until the particles contain at least 10 percent Wegscheider's Salt and continuing the reaction to produce particles containing 20 to in excess of 95 percent Wegscheider's Salt with a water content of less than 12 percent, said particles being characterized by being in needle-form which in turn are composed of randomly oriented Wegscheider's Salt micro needles. | ||||||
| 99 | Apparatus for slurrying soda ash | US42127873 | 1973-12-03 | US3891393A | 1975-06-24 | WEEKS LORNE E; DORAN RONALD W |
| A method and apparatus for forming soda ash slurries is described wherein large quantities of soda ash are dispersed and wetted with a soda ash solution to form a mixture of saturated soda ash and sodium carbonate monohydrate.
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| 100 | Continuous recycle heating process for the production of soda ash and alkali metal phosphates | US33038563 | 1963-12-13 | US3336104A | 1967-08-15 | STANDISH MILLER WARREN |
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