| 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 | Process for the purification of solutions containing a sodium or potassium carbonate, sulphate, and possibly hydroxide, and at least one of the metals vanadium, uranium and molybdenum | US324060 | 1981-11-23 | US4451439A | 1984-05-29 | Pierre Maurel; Bernard Bosca; Francois Nicolas |
| A process for the purification of solutions containing sodium or potassium carbonate, sulphate, hydroxide or hydrogen carbonate, and mainly at least one of the metals belonging to the group formed by vanadium, uranium or molybdenum, in the form of sodium or potassium salts, and inorganic and/or organic impurities, wherein the above-mentioned solutions are completely or partially caustified by the addition of an adequate amount of lime, whereby a first precipitate essentially containing calcium carbonate is separated, and the separated liquor is concentrated by evaporation until the hydroxide content is at most equal to 50%, to cause the production of a second precipitate which essentially comprises sodium or potassium sulphate, then, after separation thereof, a hydroxide-rich liquor is collected.This process is more particularly adapted for treatments of liquors resulting from the alkaline attach of vanadiferous and uraniferous ores. | ||||||
| 82 | Process for the preparation of potassium carbonate hydrate | US3773902D | 1971-05-26 | US3773902A | 1973-11-20 | NEUMANN U |
| AN ECONOMICALLY FEASIBLE CONTINUOUS PROCESS FOR THE PRODUCTION OF POTASSIUM CARBONATE BY THE CARBONATION OF A POTASSIUM HYDROXIDE SOLUTION WITH CO2 ON A COMMERCIAL SCALE WHICH IS TROUBLE-FREE AND REQUIRES SIMPLE APPARATUS IN WHICH A STREAM OF THE POTASSIUM HYDROXIDE SOLUTION IS FED TO A REACTION ZONE WHERE IT IS REACTED WITH CO2 AT 80-135*C. AND 130 TORR-ATMOSPHERIC PRESSURE; SUFFICIENT WATER IS EVAPORATED FROM THE SOLUTION IN THE REACTION ZONE TO PRECIPITATE K2CO3-1 1/2H2O; A STREAM OF THE PRECIPITATED POTASSIUM CARBONATE AND A PORTION OF THE SOLUTION IS REMOVED FROM THE REACTION ZONE AS A SLURRY; THE LIQUID AND SOLID PHASES OF THE SLURRY ARE SEPARATED; AND THE SEPARATED LIQUID PHASE IS RECYCLED TO THE REACTION ZONE, PREFERABLY AFTER HEATING TO A TEMPERATURE ABOVE THAT OF THE REACTION ZONE.
|
||||||
| 83 | Method of manufacturing sodium carbonate | US3505009D | 1967-10-16 | US3505009A | 1970-04-07 | WEELE MARINA ADRIANA VAN DAMME; WIENK BERNARDUS G |
| 84 | Process for the manufacture of sodium carbonate | US58778266 | 1966-10-19 | US3368866A | 1968-02-13 | PIERRE SEGUELA |
| 85 | Conversion of caustic soda to soda ash | US31141163 | 1963-09-25 | US3321268A | 1967-05-23 | COPSON RAYMOND L; HOWARD CARLTON J; HECKLINGER CLARENCE F |
| 86 | Direct and simultaneous production of inorganic alkaline salts, chlorine and cathodic products | US20892462 | 1962-07-10 | US3278403A | 1966-10-11 | UGO GARDELLA; ALBERTO OMACINI |
| 87 | Sodium cakbonate manufacture | US3103413D | US3103413A | 1963-09-10 | ||
| 88 | Process of making sodium bicarbonate from sodium hydroxide cell liquor | US33382853 | 1953-01-28 | US2792283A | 1957-05-14 | ARCHIE HILL; BURKHOLDER WARD J |
| 89 | Method of recovering alkalis from silicates. | US1913743158 | 1913-01-20 | US1078496A | 1913-11-11 | GELLERI SOMA |
| 90 | Process of and apparatus for making sodium carbonate by ammonia | US363952D | US363952A | 1887-05-31 | ||
| 91 | Joseph townsend | US298256D | US298256A | 1884-05-06 | ||
| 92 | PROCESSES FOR PREPARING LITHIUM CARBONATE | EP14854916 | 2014-10-23 | EP3060522A4 | 2016-12-28 | BOURASSA GUY; PEARSE GARY; MACKIE STEPHEN CHARLES; GLADKOVAS MYKOLAS; SYMONS PETER; GENDERS J DAVID; MAGNAN JEAN-FRANÇOIS; CLAYTON GENEVIÈVE |
| There are provided processes comprising submitting an aqueous composition comprising lithium sulphate and/or bisulfate to an electrolysis or an electrodialysis for converting at least a portion of said sulphate into lithium hydroxide. During electrolysis or electrodialysis, the aqueous composition is at least substantially maintained at a pH having a value of about 1 to about 4; and converting said lithium hydroxide into lithium carbonate. Alternatively, lithium sulfate and/or lithium bisulfate can be submitted to a first electromembrane process that comprises a two-compartment membrane process for conversion of lithium sulfate and/or lithium bisulfate to lithium hydroxide, and obtaining a first lithium-reduced aqueous stream and a first lithium hydroxide-enriched aqueous stream; and submitting said first lithium-reduced aqueous stream to a second electromembrane process comprising a three-compartment membrane process to prepare at least a further portion of lithium hydroxide and obtaining a second lithium-reduced aqueous stream and a second lithium-hydroxide enriched aqueous stream. | ||||||
| 93 | ACID GAS REMOVAL FROM A GASEOUS STREAM | EP15737368.9 | 2015-01-16 | EP3094401A1 | 2016-11-23 | YABLONSKY, Al; STOLA, Alexander; GERMAIN, Adam; JONES, Joe, David |
| Apparatuses, systems, and methods for removing acid gases from a gas stream are provided. Gas streams include waste gas streams or natural gas streams. The methods include obtaining a hypochlorite and a carbonate or bicarbonate in an aqueous mixture, and mixing the aqueous mixture with the gas stream to produce sulfates or nitrates from sulfur-based and nitrogen-based acidic gases. Some embodiments of the present disclosure are directed to produce the carbonate and/or bicarbonate scrubbing reagent from CO2 in the gas stream. Still others are disclosed. | ||||||
| 94 | DRY SORBENT INJECTION (DSI) RECOVERY SYSTEM AND METHOD THEREOF | EP13871824.2 | 2013-08-02 | EP2945717A1 | 2015-11-25 | NEUMANN, David Kurt; OHMAN, Claire MacLeod; KLEIN, Eric John; FEVE, Jean-Philippe |
| The invention generally relates to system and method for recovering sodium bicarbonate from a solid waste, and more particularly to a method and system for recovering sodium bicarbonate from fly ash of a coal fired plant collected downstream of an injection process for pollution reduction from the industrial process. | ||||||
| 95 | CO2 SCRUBBER/SEPARATOR USING A CYCLIC CARBONATOR FOR CONTROLLED CARBONATE/BICARBONATE PRODUCTION | EP11718523.1 | 2011-04-15 | EP2558185B1 | 2015-05-06 | MOHAMED, Olfi; FARHAT, Tarek R. |
| The present invention comprises a cyclic pressurized carbonator reactor for scrubbing CO2 from industrial gas streams to produce high purity carbonates/bi-carbonates, and pure CO2 streams, characterized in that the said carbonator reactor comprise a steel tank with stirrer and cooled double walls, a heat exchanger that cools the carbonator, a coolant volume, a cooled surface area, an impeller that disperses the gas, where said impeller is mounted on a hollow shaft drawing gas from the gas volume at the top of the reactor, three baffles that extend through almost all of the working volume of the said tank, motors with variable speed drives, and the shaft seal is double mechanical type with cooling. | ||||||
| 96 | CO2 UTILIZATION IN ELECTROCHEMICAL SYSTEMS | EP09798723 | 2009-07-15 | EP2245214A4 | 2013-04-24 | GILLIAM RYAN; ALBRECHT THOMAS A; JALANI NIKHIL; KNOTT NIGEL ANTONY; DECKER VALENTIN; KOSTOWSKYJ MICHAEL; BOGGS BRYAN; GORER ALEXANDER; FARSAD KASRA |
| A low-voltage, low-energy electrochemical system and method of removing protons and/or producing a base solution comprising hydroxide and carbonate/bicarbonate ions, utilizing carbon dioxide in a cathode compartment that is partitioned into a first cathode electrolyte compartment and a second cathode electrolyte compartment such that liquid flow between the cathode electrolyte compartments is possible, but wherein gaseous communication between the cathode electrolyte compartments is restricted. Carbon dioxide gas in one cathode electrolyte compartment is utilized with the cathode electrolyte in both compartments to produce the base solution with less that 3V applied across the electrodes. | ||||||
| 97 | METHOD FOR PREPARING DITHIONITE AND USE THEREOF | EP08761628.0 | 2008-04-25 | EP2150489B1 | 2011-08-24 | RAHKOLA, Risto |
| The present invention relates to a method for preparing dithionite solution with a reaction wherein sodium bisulfite is reduced with sodium borohydride solution to obtain dithionite, wherein the rise of the pH of the solution is prevented by adjusting the pH with carbon dioxide. | ||||||
| 98 | PROCESS FOR PRODUCING SODIUM BICARBONATE FOR FLUE GAS DESULPHURIZATION | EP09700830.4 | 2009-01-06 | EP2234699A1 | 2010-10-06 | DETOURNAY, Jean-Paul; COUSTRY, Francis |
| Process for producing sodium bicarbonate for purifying flue gases, according to which an aqueous solution containing sodium sulfate is subjected to electrodialysis to produce a sodium hydroxide solution and a sodium bisulfate solution, the sodium hydroxide solution being carbonated in order to obtain sodium bicarbonate. | ||||||
| 99 | METHOD FOR PREPARING DITHIONITE | EP08761628 | 2008-04-25 | EP2150489A4 | 2010-06-30 | RAHKOLA RISTO |
| 100 | PRODUCTION OF HYDROGEN FROM NON-CYCLIC ORGANIC SUBSTANCES HAVING MULTIPLE ALCOHOL FUNCTIONALITY | EP06801420 | 2006-08-14 | EP1926680A4 | 2010-03-03 | REICHMAN BENJAMIN; MAYS WILLIAM; STREBE JAMES |
QQ群二维码
意见反馈
意见反馈