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11. 发明授权

US3695839A Process of producing chlorine dioxide 失效
标题翻译：生产二氧化氯的方法
公开(公告)号：US3695839A
公开(公告)日：1972-10-03
申请号：US3695839D
申请日：1970-04-27
申请人： CHEM GENERATORS INC
发明人： CALLERAME JOSEPH
IPC分类号： C01B11/02 , C01B11/00 , C01D9/16 , C01F11/36
CPC分类号： C01B11/027
摘要： CHLORINE DIOXIDE IS PRODUCED BY PASSING THE REACTION PRODUCT OF NITRIC ACID AND A CHLORATE OF AN ALKALI METAL OR ALKALINE EARTH METAL THROUGH A CATIONIC EXCHANGE RESIN OR BY HEATING THE REACTION PRODUCT AT A TEMPERATURE OF ABOUT 110*C. THE REACTION PRODUCT OF NITRIC ACID AND THE CHLORATE CONTAINS CHLORIC ACID WHICH MAY BE UTILIZED PER SE.

12. 发明授权

US3595609A Cyclic process for producing potassium nitrate and ammonium chloride 失效
标题翻译：生产硝酸钾和氯化铵的循环方法
公开(公告)号：US3595609A
公开(公告)日：1971-07-27
申请号：US3595609D
申请日：1969-10-13
申请人： ALLIED CHEM
发明人： BECKHAM LELAND J
IPC分类号： C01C1/16 , C01D9/10 , C01D9/16
CPC分类号： C01C1/164 , C01D9/10
摘要： POTASSIUM CHLORIDE AND WATER AND ADDED TO A FIRST AQUEOUS NITRATE-CHLORIDE MOTHER LIQUOR HAVING A

K+/(K++NH4+)

MOL RATIO OF NOT MORE THAN ABOUT 0.37 TO FORM A POTASSIUM NITRATE CRYSTALLIZATION MEDIUM. THE MEDIUM IS COOLED TO PRECIPITATE CRYSTALLINE POTASSIUM NITRATE AND FORM A SECOND NITRATE-CHLORIDE MOTHER LIQUOR. AFTER SEPARATION OF THE POTASSIUM NITRATE, AMMONIUM NITRATE IS ADDED TO THE SECOND MOTHER LIQUOR, ALL ADDED WATER IS EVAPORATED TO FORM AN AMMONIUM CHLORIDE CRYSTALLIZATION MEDIUM, AND AMMONIUM CHLORIDE IS CRYSTALLIZED AT A TEMPERATURE HIGHER THAN THE POTASSIUM NITRITE CRYSTALLIZATION. THE AMMONIUM CHLORIDE IS SEPARATED, AND THE RESIDUAL MOTHER LIQUOR IS RECYCLED TO RECEIVE ADDITIONAL POTASSIUM CHLORIDE AND WATER. THE MAINTENANCE OF A NET BALANCE OF COM-

PONENTS PERMITS CONTINUOUS OPERATION OF A CYCLIC METATHESIS OPERATION.

13. 发明授权

US2196153A Process of regenerating fused saltpeter baths 失效
标题翻译：再生融合盐浴的过程
公开(公告)号：US2196153A
公开(公告)日：1940-04-02
申请号：US20163938
申请日：1938-04-12
申请人： IG FARBENINDUSTRIE AG
发明人： MARTIN MICHEL JOSEF
IPC分类号： C01D9/16 , C21D1/607
CPC分类号： C01D9/16 , C21D1/607

14. 发明授权

US2106196A Process for removing and/or preventing the deposition of scale in evaporators 失效
标题翻译：用于去除和/或防止蒸发器中垢垢沉积的方法
公开(公告)号：US2106196A
公开(公告)日：1938-01-25
申请号：US64432932
申请日：1932-11-25
申请人： SOLVAY PROCESS CO
发明人： FITCH WESTON CHARLES
IPC分类号： C01D9/16 , C02F5/08
CPC分类号： C01D9/16 , C02F5/083 , Y10S159/13

15. 发明公开

US20230382768A1 PURIFICATION METHOD FOR LANDFILL LEACHATE 审中-公开
公开(公告)号：US20230382768A1
公开(公告)日：2023-11-30
申请号：US18249618
申请日：2021-10-25
申请人： Cool Separations B.V.
发明人： Jaap VAN SPRONSEN , Mohammed ALJIRJAWI , Jordy OTTEN
IPC分类号： C02F1/22 , C01D5/16 , C01D3/08 , C01D3/14 , C01D9/16 , C02F1/38 , C02F9/00
CPC分类号： C02F1/22 , C01D5/16 , C01D3/08 , C01D3/14 , C01D9/16 , C02F1/385 , C02F9/00 , C02F2001/5218
摘要： The invention is in the field of landfill leachate, in particular the invention is directed to a method for purifying landfill leachate comprising water, dissociated ions and organic compounds, wherein the method comprises providing the leachate in a eutectic freeze crystallization (EFC) crystallizer and carrying out eutectic freeze crystallization by reducing the temperature of the leachate to a first eutectic point to obtain a first mixture comprising ice and a first crystalline salt. Further the ice and the first crystalline salt are separated into an ice stream and a crystalline salt stream.

16. 发明申请

US20120195818A1 Polyhalite IMI Process For KNO3 Production 有权
标题翻译：用于KNO3生产的Polyhalite IMI工艺
公开(公告)号：US20120195818A1
公开(公告)日：2012-08-02
申请号：US13380539
申请日：2010-06-27
申请人： Michael Bonan , Eyal Ginzberg , Akiva Mozes , Eyal Barnea , Hugo Keselman , Gideon Friedman , Ron Frim , Cornelis Petrus Langeveld
发明人： Michael Bonan , Eyal Ginzberg , Akiva Mozes , Eyal Barnea , Hugo Keselman , Gideon Friedman , Ron Frim , Cornelis Petrus Langeveld
IPC分类号： C01D9/00 , C01D9/16
CPC分类号： C01D9/04 , C01D3/04 , C01F5/14 , C01F5/22 , C01F11/46 , C05C5/02 , C22B3/065 , C22B3/44 , C22B26/10 , Y02P10/234
摘要： A process for producing KNO3 from polyhalite to is disclosed. In a preferred embodiment, the process comprises steps of (a) contacting polyhalite with HNO3; (b) adding Ca(OH)2 to the solution, thereby precipitating as CaSO4 at least part of the sulfate present in said solution; (c) precipitating as Mg(OH)2 at least part of the Mg2+ remaining in said solution by further addition of Ca(OH)2 to the remaining solution; (d) concentrating the solution, thereby precipitating as a sulfate compound at least part of the sulfate remaining in solution; (e) separating at least part of the NaCl from the solution remaining; and (f) crystallizing as solid KNO3 at least part of the K+ and NO3-contained in the solution. The process enables direct conversion of polyhalite to KNO3 of purity exceeding 98.5% and that is essentially free of magnesium and sulfate impurities.
摘要翻译：公开了从多卤化物生产KNO 3的方法。在优选的实施方案中，该方法包括以下步骤：（a）使多卤代硫酸盐与HNO 3接触; （b）向溶液中加入Ca（OH）2，从而以CaSO 4沉淀所述溶液中存在的至少一部分硫酸盐; （c）通过进一步向剩余溶液中加入Ca（OH）2，沉淀出Mg（OH）2至少部分Mg2 +残留在所述溶液中; （d）浓缩溶液，从而以硫酸盐化合物沉淀至少部分残留在溶液中的硫酸盐; （e）从剩余的溶液中分离至少部分NaCl; 和（f）作为固体KNO 3析出溶液中所含的K +和NO 3的至少一部分。该方法能够将多卤盐酸盐直接转化为纯度超过98.5％的KNO 3，并且基本上不含镁和硫酸盐杂质。

17. 发明授权

US4517164A Purification of alkali metal nitrates 失效
标题翻译：碱金属硝酸盐的纯化
公开(公告)号：US4517164A
公开(公告)日：1985-05-14
申请号：US613666
申请日：1984-05-24
申请人： Louis C. Fiorucci , Kevin M. Gregory
发明人： Louis C. Fiorucci , Kevin M. Gregory
IPC分类号： C01D9/16 , C01F11/36
CPC分类号： C01D9/16 , Y02P20/134
摘要： A process is disclosed for removing heavy metal contaminants from impure alkali metal nitrates containing them. The process comprises mixing the impure nitrates with sufficient water to form a concentrated aqueous solution of the impure nitrates, adjusting the pH of the resulting solution to within the range of between about 2 and about 7, adding sufficient reducing agent to react with heavy metal contaminants within said solution, adjusting the pH of the solution containing reducing agent to effect precipitation of heavy metal impurities and separating the solid impurities from the resulting purified aqueous solution of alkali metal nitrates. The resulting purified solution of alkali metal nitrates may be heated to evaporate water therefrom to produce purified molten alkali metal nitrate suitable for use as a heat transfer medium. If desired, the purified molten form may be granulated and cooled to form discrete solid particles of alkali metal nitrates.
摘要翻译：公开了从含有它们的不纯碱金属硝酸盐中除去重金属污染物的方法。该方法包括将不纯的硝酸盐与足够的水混合以形成不纯的硝酸盐的浓缩水溶液，将所得溶液的pH调节至约2至约7的范围内，加入足够的还原剂与重金属污染物在所述溶液中，调节含有还原剂的溶液的pH以使重金属杂质沉淀，并从所得纯化的碱金属硝酸盐水溶液中分离出固体杂质。得到的碱金属硝酸盐的精制溶液可以被加热以从其中蒸发水，以产生适合用作传热介质的纯化的熔融碱金属硝酸盐。如果需要，可以将纯化的熔融形式造粒并冷却以形成离散的碱金属硝酸盐的固体颗粒。

18. 发明授权

US3983222A Removing nitrates with an organic amine salt and ion exchange 失效
标题翻译：用有机胺盐除去硝酸盐并进行离子交换
公开(公告)号：US3983222A
公开(公告)日：1976-09-28
申请号：US524926
申请日：1974-11-18
申请人： Timo Kalevi Lehto
发明人： Timo Kalevi Lehto
IPC分类号： C01B21/48 , B01D11/04 , C01B21/46 , C22B3/28 , C01D9/16
CPC分类号： C01B21/46 , B01D11/0488 , C22B3/0013 , Y02P10/234
摘要： A continuous process for removing nitrates from nitrate containing aqueous solutions having a pH of about 0-7, which comprises: (1) extracting the nitrate containing aqueous solution with an organic amine salt dissolved in an organic solvent phase whereby the nitrate ion goes into the organic solvent, (2) separating the organic phase, (3) stripping the organic extraction solvent phase from the extraction with a stripping salt solution of pH at least 0.5, said salt being capable of ion exchange with the nitrate ion and containing the anion of the amine salt in step (1) to strip and convert the amine for the next extraction cycle into the same amine salt as used for the extraction; and the stripping solution contains the nitrate ion and the cation of the stripping solution; (4) maintaining the concentration of the salt formed by the cation of the stripping salt and the nitrate anion in the stripping solution so high that this salt is crystallized from the stripping solution substantially continuously, but still so low that the nitrate anion extracted into the organic extraction solvent phase passes during the stripping continuously into the stripping solution while the anion of the stripping salt passes from the stripping solution into the organic extraction solvent phase; and recovering crystallized nitrate salt from the stripping solution.
摘要翻译：一种从含硝酸盐的水溶液中除去硝酸盐的连续方法，其pH为约0-7，其包括：（1）用溶于有机溶剂相中的有机胺盐萃取含硝酸盐的水溶液，由此硝酸根离子进入有机溶剂，（2）分离有机相，（3）用pH至少为0.5的汽提盐溶液萃取萃取有机萃取相，所述盐能够与硝酸根离子交换并含有阴离子步骤（1）中的胺盐，将用于下一个萃取循环的胺分离并转化成与用于萃取的胺盐相同的胺盐; 汽提溶液中含有硝酸根离子和汽提溶液的阳离子; （4）保持汽提溶液中的阳离子和硝酸根阴离子形成的盐的浓度如此高，使得该盐基本上连续地从汽提溶液中结晶，但仍然如此之低，以致硝酸根阴离子被萃取到有机萃取溶剂相在汽提过程中连续进入汽提溶液，而汽提盐的阴离子从汽提溶液中通过有机萃取溶剂相; 并从剥离溶液中回收结晶的硝酸盐。

19. 发明授权

US3793208A Method of rectifying commercial salt baths 失效
标题翻译：修复商业盐池的方法
公开(公告)号：US3793208A
公开(公告)日：1974-02-19
申请号：US3793208D
申请日：1973-01-04
申请人： PARK CHEM CO
发明人： FOREMAN R
IPC分类号： C01D9/16 , C21D1/607 , C09K3/02
CPC分类号： C21D1/607 , C01D9/16
摘要： A method of rectifying commercial salt baths which operate generally within the temperature range from about 300*-600* F, said rectifying being to remove undesirable carbonates and/or hydroxides impurities.
摘要翻译：一种整流工作盐浴的方法，其操作通常在约300-600°F的温度范围内，所述精馏是除去不需要的碳酸盐和/或氢氧化物杂质。

20. 发明授权

US2106168A Production of alkali metal nitrates 失效
标题翻译：生产碱金属硝酸盐
公开(公告)号：US2106168A
公开(公告)日：1938-01-25
申请号：US56658331
申请日：1931-10-02
申请人： SOLVAY PROCESS CO
发明人： STEVENS DENNY ALFRED
IPC分类号： C01D9/16
CPC分类号： C01D9/16

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