| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | 氨化法制取硫酸钾 | CN93121246.4 | 1993-12-30 | CN1032582C | 1996-08-21 | 马欣华 |
| 本发明属于硫酸钾的制取方法，其特征在于用钙废液全脱硫处理海盐苦卤所产的石膏作为原料硫酸钙，在氨液中与氯化钾反应制取硫酸钾。氨化反应中氨的浓度为30-35%，硫酸钾的回收采用通氨结晶的方法。本发明工艺流程短，能耗低，设备投资少，经济效益高，形成以产硫酸钾为主体的海盐苦卤综合利用新体系。 | ||||||
| 2 | 加工硫酸钾和硫酸镁溶液的方法、生产硫酸钾的方法和相关系统 | CN201380056997.6 | 2013-09-10 | CN104755426B | 2017-05-31 | S·L·查斯顿; M·J·莫里森; R·W·查斯顿; D·M·费尔顿; T·H·纽曼 |
| 加工包含硫酸钾和硫酸镁的水溶液的方法包括使K2SO4结晶、使循环晶体结晶并且使至少一部分循环晶体与所述水溶液混合。用于加工硫酸钾和硫酸镁的系统包括第一结晶器和与第二混合罐流体连通的第二结晶器。所述第二结晶器被构成并适于从浓缩液中沉淀循环晶体以形成贫钾循环卤水。在所述第二结晶器中沉淀的所述循环晶体具有适合循环至所述第一结晶器的组成以增加SOP的生产。 | ||||||
| 3 | 一种由磷石膏制硫酸钾的方法 | CN201611079672.1 | 2016-11-30 | CN106587113A | 2017-04-26 | 尤新谊 |
| 本发明公开了一种由磷石膏制硫酸钾的方法，涉及化合物生产方法技术领域，包括如下步骤：S1、制备硫酸氨溶液；S2、制备硫酸钾氨；S3、精制硫酸钾氨；S4、制备硫酸钾；S5、复分解母液浓缩制氯化钾氨；S6、产品成分检测；本发明所公开的由磷石膏制硫酸钾的方法，制取硫酸铵溶液采用固体碳酸氢铵为原料,磷石膏不须处理就能直接使用，工艺流程简单,原料采购与贮运方便,K2O转化率达76％以上，且产品质量好,副产品碳酸钙能全部替代生石灰粉用于混合砂浆,效果良好，副产品氯化钾铵系二元复合肥,可混配成高、中、低浓度三元复肥，硫酸铵溶液制备过程中有少量氨逸出,采用稀硫酸吸收装置加以回收，可进一步提高氮收率。 | ||||||
| 4 | 氨化法制取硫酸钾 | CN93121246.4 | 1993-12-30 | CN1089577A | 1994-07-20 | 马欣华 |
| 本发明属于硫酸钾的制取方法，其特征在于用钙废液全脱硫处理海盐苦卤所产的石膏作为原料硫酸钙，在氨液中与氯化钾反应制取硫酸钾。氨化反应中氨的浓度为30—35％，硫酸钾的回收采用通氨结晶的方法。本发明工艺流程短，能耗低，设备投资减少，经济效益高，形成以产硫酸钾为主体的海盐苦卤综合利用新体系。 | ||||||
| 5 | 一种硫酸镁转化法生产硫酸钾及镁资源的综合利用方法 | CN201610122909.3 | 2016-03-04 | CN105753019A | 2016-07-13 | 肖景波; 陈居玲; 夏娇彬 |
| 本发明公开了一硫酸镁转化法生产硫酸钾及镁资源的综合利用方法，本发明工艺中，控制硫酸钾生产过程钾收率的技术措施是对生产过程所产生的各级母液及洗水进行全封闭循环利用。实现了各级母液（废水）和钾元素的全封闭循环利用，从而提高了钾收率，使钾收率达到92%以上。同时，通过以老卤为原料制备碱式碳酸镁或氢氧化镁，实现了对生产过程镁元素的综合利用并收得了工业盐，提高了系统经济效益，消除了由废水排放对环境造成的污染。 | ||||||
| 6 | 加工硫酸钾和硫酸镁溶液的方法、生产硫酸钾的方法和相关系统 | CN201380056997.6 | 2013-09-10 | CN104755426A | 2015-07-01 | S·L·查斯顿; M·J·莫里森; R·W·查斯顿; D·M·费尔顿; T·H·纽曼 |
| 加工包含硫酸钾和硫酸镁的水溶液的方法包括使K2SO4结晶、使循环晶体结晶并且使至少一部分循环晶体与所述水溶液混合。用于加工硫酸钾和硫酸镁的系统包括第一结晶器和与第二混合罐流体连通的第二结晶器。所述第二结晶器被构成并适于从浓缩液中沉淀循环晶体以形成贫钾循环卤水。在所述第二结晶器中沉淀的所述循环晶体具有适合循环至所述第一结晶器的组成以增加SOP的生产。 | ||||||
| 7 | 用混合盐和氯化钾制备硫酸钾的方法 | CN88102730 | 1988-05-12 | CN1012058B | 1991-03-20 | 吕铮; 袁俊生; 牛自得; 王功伟; 吴国菊; 高良富; 吴如春 |
| 本发明是用来自盐化工厂的废渣混合盐与氯化钾转化制取硫酸钾的方法。两种原料经过两次转化和一次浮选分离，同时制得硫酸钾和氯化钠两种产品。硫酸钾产品中，氧化钾含量在50%以上，氯离子含量在1%以内，达到钾肥质量标准。每生产一吨硫酸钾消耗1.15吨氯化钾和3.0吨混合盐，副产1.2吨的氯化钠。利用本方法制取硫酸钾加工成本低，设备投资少，能耗低，无环境污染。 | ||||||
| 8 | 用混合盐和氯化钾制备硫酸钾的方法 | CN88102730 | 1988-05-12 | CN1037492A | 1989-11-29 | 吕铮; 袁俊生; 牛自得; 王功伟; 吴国菊; 高良富; 吴如春 |
| 本发明是用来自盐化工厂的废渣混合盐与氯化钾转化制取硫酸钾的方法。两种原料经过两次转化和一次浮选分离，同时制得硫酸钾和氯化钠两种产品。硫酸钾产品中，氧化钾含量在50％以上，氯离子含量在1％以内，达到钾肥质量标准。每生产一吨硫酸钾消耗1.15吨氯化钾和3.0吨混合盐，副产1.2吨的氯化钠。利用本方法制取硫酸钾加工成本低，设备投资少，能耗低，无环境污染。 | ||||||
| 9 | Conversion of gypsum | JP16060883 | 1983-09-02 | JPS5983929A | 1984-05-15 | KUNUUTO KURISUTEN BAIERU KUNUU |
| 10 | JPH0364449B2 - | JP16060883 | 1983-09-02 | JPH0364449B2 | 1991-10-07 | KUNUUTO KURISUTEN BAIERU KUNUUTOSEN |
| 11 | METHODS OF PROCESSING POTASSIUM SULFATE AND MAGNESIUM SULFATE, AND RELATED SYSTEMS | EP13837230 | 2013-09-10 | EP2895427A4 | 2016-05-04 | CHASTAIN STEVEN L; MORRISON MICHAEL J; CHASTAIN RICHARD W; FELTON DONIAL M; NEUMAN THOMAS H |
| Methods of processing an aqueous solution comprising potassium sulfate and magnesium sulfate include crystallizing K2SO4, crystallizing recycle crystals, and mixing at least a portion of the recycle crystals with the aqueous solution. Systems for processing potassium sulfate and magnesium sulfate include a first crystallizer and a second crystallizer in fluid communication with the second mix tank. The second crystallizer is structured and adapted to precipitate recycle crystals from the concentrated liquor to form a potassium-depleted recycle brine. The recycle crystals precipitated in the second crystallizer have a composition suitable to be recycled to the first crystallizer to increase the production of SOP. | ||||||
| 12 | METHODS OF PROCESSING POTASSIUM SULFATE AND MAGNESIUM SULFATE, AND RELATED SYSTEMS | EP13837230.5 | 2013-09-10 | EP2895427A1 | 2015-07-22 | CHASTAIN, Steven, L.; MORRISON, Michael, J.; CHASTAIN, Richard, W.; FELTON, Donial, M.; NEUMAN, Thomas, H. |
| Methods of processing an aqueous solution comprising potassium sulfate and magnesium sulfate include crystallizing K2SO4, crystallizing recycle crystals, and mixing at least a portion of the recycle crystals with the aqueous solution. Systems for processing potassium sulfate and magnesium sulfate include a first crystallizer and a second crystallizer in fluid communication with the second mix tank. The second crystallizer is structured and adapted to precipitate recycle crystals from the concentrated liquor to form a potassium-depleted recycle brine. The recycle crystals precipitated in the second crystallizer have a composition suitable to be recycled to the first crystallizer to increase the production of SOP. | ||||||
| 13 | 석고의 전환방법 | KR1019830004146 | 1983-09-02 | KR1019910003611B1 | 1991-06-07 | 케미라단마아크에이에스 |
| 내용 없음. | ||||||
| 14 | 석고의 전환방법 | KR1019830004146 | 1983-09-02 | KR1019840006173A | 1984-11-22 | 케미라단마아크에이에스 |
| 내용없음 | ||||||
| 15 | Alkaline Earth Oxides For Green Processes For metals and other Material | US13862623 | 2013-04-15 | US20140305346A1 | 2014-10-16 | Ramaswami Neelameggham; Robert E. Brown |
| The present invention teaches the method to use the sulfate or sulfites based raw materials, such as magnesium, calcium and other alkative earth sulfates or sulfites to produce the respective oxides in a carbon five basis, by using sulfur as the fuel and the reductant. The invention also utilizes renewable energy such as solar thermal or green electricity wherever possible. This approach provides a green process, of ultra-low carbon dioxide emission, for the production of magnesium, other alkaline earth metals and other material which requires alkaline earth oxide, such as in the production of carbon free Portland cement requiring lime. The invention also provides a useful outlet for waste streams leading to sustainable processes. The cost of the production of these precursors are kept low by concurrently producing a saleable by-product—sulfuric-acid. | ||||||
| 16 | METHODS OF PROCESSING SOLUTIONS OF POTASSIUM SULFATE AND MAGNESIUM SULFATE, METHODS OF PRODUCING POTASSIUM SULFATE, AND RELATED SYSTEMS | US14023347 | 2013-09-10 | US20140072507A1 | 2014-03-13 | Steven L. CHASTAIN; Michael J. MORRISON; Richard W. CHASTAIN; Donial M. FELTON; Thomas H. NEUMAN |
| Methods of processing an aqueous solution comprising potassium sulfate and magnesium sulfate include crystallizing K2SO4, crystallizing recycle crystals, and mixing at least a portion of the recycle crystals with the aqueous solution. Systems for processing potassium sulfate and magnesium sulfate include a first crystallizer and a second crystallizer in fluid communication with the second mix tank. The second crystallizer is structured and adapted to precipitate recycle crystals from the concentrated liquor to form a potassium-depleted recycle brine. The recycle crystals precipitated in the second crystallizer have a composition suitable to be recycled to the first crystallizer to increase the production of SOP. | ||||||
| 17 | Process for the production of potassium sulfate | US816964 | 1977-07-19 | US4129642A | 1978-12-12 | Ulrich Neitzel |
| Potassium sulfate is produced from a mixture of carnallite, potassium chloride, kieserite and residual quantities of less than 15% by weight of rock salt by treating the mixture at a temperature of 20.degree.-40.degree. C with potash magnesia liquor to form a slurry with at most 70 mole MgCl.sub.2 /1000 mole H.sub.2 O, whereafter the liquor portion of the slurry comprising a solution saturated with carnallite and rock salt is separated from the solid substance, which solid substance is then converted at temperatures of 75.degree.-110.degree. with a sulfate liquor, which contains 18-45 mole MgCl.sub.2 /1000 mole H.sub.2 O, into a mixture of langbeinite and potassium chloride, which mixture after separation from the liquor is treated at temperatures of 15.degree.-110.degree. C with a sulfate liquor containing 18-50 mole MgCl.sub.2 /1000 mole H.sub.2 O, whereupon the crystallizate is separated from the mother liquor and is converted with water to potassium sulfate. | ||||||
| 18 | Production of white potassium sulfate crystals | US28890172 | 1972-09-14 | US3843772A | 1974-10-22 | BOEGLIN A |
| Wherein: R1 is alkyl, R2 is H or alkyl, R1 + R2 total 8-18 carbon atoms, N IS 1 TO 12, AND X is H, Na, K, Mg , NH4 or triethanol amine.
Potassium sulfate crystals made by the reaction in aqueous medium of potassium chloride with a magnesium sulfate and potassium magnesium double sulfate can be recovered, free of the usual discoloring, and in enhanced crystal size by incorporating in the medium a small amount of a compound of the formula: |
||||||
| 19 | Selective recovery of salts from mixed salt solutions | US3432031D | 1967-08-22 | US3432031A | 1969-03-11 | FERRIS LOCKWOOD W |
| 20 | Process and apparatus for harvesting crystals | US46291465 | 1965-06-10 | US3389974A | 1968-06-25 | CESARE BARATTINI; PAOLO BORTOLINI; ALBERTO SCARFI |
| 1,099,318. Crystallizing. SOCIETA' EDISON. June 9, 1965 [June 10, 1964], No. 24466/ 65. Heading B1G. [Also in Division F4] Cooling and crystallization of a saturated solution is effected in a vessel by means of water-cooled heat exchange tubing 1 resiliently suspended from a frame 2 which is vibrated by a cam operated by a motor 18. The tubing is in the form of two bundles operating in parallel, each bundle comprising a plurality of tubes, each connected to the next alternately at the top and bottom. The solution is stirred by a propellor 19 between the bundles. | ||||||
QQ群二维码
意见反馈
意见反馈