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31. 发明授权

US4668495A Process for obtaining potassium nitrate from potassium chloride and nitric acid 失效
标题翻译：从氯化钾和硝酸中获得硝酸钾的方法
公开(公告)号：US4668495A
公开(公告)日：1987-05-26
申请号：US771294
申请日：1985-08-30
申请人： Luis S. Portela
发明人： Luis S. Portela
IPC分类号： C01D9/04 , C01D9/16 , C01B21/48 , C01F11/38
CPC分类号： C01D9/16 , C01D9/04
摘要： The present invention provides a process for manufacture of potassium nitrate from potassium chloride and nitric acid. A source of potassium chloride may be screened and separated into fine and coarse fractions, or the screening may be eliminated and the source may be separated into equal coarse fractions. The coarse fraction, when screening has occurred, or one of the equal fractions, where no screening has occurred, is dissolved in a dilute solution of nitric acid prior to any reaction. Thereafter, either the fine fraction (if screening occurred) or the other equal fraction (if no screening occurred) reacts with the dilute nitric acid-potassium chloride solution and additional nitric acid having a concentration of about 60% at ambient temperature. The resulting solution may be crystallized with or without the prior separation of solid potassium nitrate. Nitric acid is recovered by solvents from a residual brine solution after crystallization. The recovered nitric acid is washed to provide a nitric acid solution having a concentration of 3% to 10% which is recycled for use at the beginning of the process to dissolve the coarse fraction of potassium chloride prior to the reaction stage.
摘要翻译：本发明提供从氯化钾和硝酸制造硝酸钾的方法。氯化钾的来源可以筛选并分离成精细和粗级分，或者筛选可以被去除，并且源可以分离成相等的粗级分。当发生筛选时，粗级分或其中没有发生筛选的相等级分之一在任何反应之前溶解在稀硝酸溶液中。此后，细小部分（如果发生筛选）或其他相等的分数（如果没有筛选发生）在环境温度下与稀硝酸 - 氯化钾溶液和浓度约为60％的另外的硝酸反应。所得到的溶液可以在或不先前分离固体硝酸钾的情况下结晶。结晶后，硝酸由残留的盐水溶液通过溶剂回收。回收的硝酸被洗涤以提供浓度为3％至10％的硝酸溶液，其在该方法开始时被循环使用，以在反应阶段之前溶解氯化钾的粗级分。

32. 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

33. 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

34. 发明公开

EP0904251A1 A PROCESS FOR PRODUCING HIGH-PURITY POTASSIUM SALTS 失效
标题翻译：工艺生产高纯度钾盐
公开(公告)号：EP0904251A1
公开(公告)日：1999-03-31
申请号：EP97926033.0
申请日：1997-06-12
申请人： Avebe B.A. , KEMIRA AGRO OY
发明人： VORAGE, Marcus , EICHNER, Per
IPC分类号： C01B25 , C01D9 , C05B7 , C05C5 , C05F5
CPC分类号： C05F5/006 , C01B25/30 , C01D9/02 , C01D9/16 , C05B7/00 , C05C5/02 , Y02A40/211
摘要： The present invention relates to a new selective process for producing high-purity potassium nitrate or potassium phosphate. The process uses a liquid agricultural or fermentation by-product, such as molasses, vinasse or potato thick juice as its potassium source and comprises the following unit operations: clarification, ion exchange, neutralization, concentration and crystallization. Importantly, the present invention also concerns a process for producing an ingredient for animal feed, said ingredient having a reduced potassium content.

35. 发明申请

WO1997047559A1 A PROCESS FOR PRODUCING HIGH-PURITY POTASSIUM SALTS 审中-公开
标题翻译：生产高纯度钾盐的方法
公开(公告)号：WO1997047559A1
公开(公告)日：1997-12-18
申请号：PCT/FI1997000372
申请日：1997-06-12
申请人： AVEBE B.A. , KEMIRA AGRO OY , VORAGE, Marcus , EICHNER, Per
发明人： AVEBE B.A. , KEMIRA AGRO OY
IPC分类号： C01D09/04
CPC分类号： C05F5/006 , C01B25/30 , C01D9/02 , C01D9/16 , C05B7/00 , C05C5/02 , Y02A40/211
摘要： The present invention relates to a new selective process for producing high-purity potassium nitrate or potassium phosphate. The process uses a liquid agricultural or fermentation by-product, such as molasses, vinasse or potato thick juice as its potassium source and comprises the following unit operations: clarification, ion exchange, neutralization, concentration and crystallization. Importantly, the present invention also concerns a process for producing an ingredient for animal feed, said ingredient having a reduced potassium content.
摘要翻译：本发明涉及一种生产高纯度硝酸钾或磷酸钾的新型选择方法。该方法使用液体农业或发酵副产物，如糖蜜，葡萄酒或马铃薯浓汁作为其钾源，并包括以下单元操作：澄清，离子交换，中和，浓缩和结晶。重要的是，本发明还涉及用于生产动物饲料成分的方法，所述成分具有降低的钾含量。

36. 发明申请

WO2010148983A1 一种硝酸钠球形细颗粒的造粒方法审中-公开
公开(公告)号：WO2010148983A1
公开(公告)日：2010-12-29
申请号：PCT/CN2010/074011
申请日：2010-06-17
申请人：戴良玉 , 吴望发
发明人：戴良玉 , 吴望发
IPC分类号： C01D9/18 , B01J2/04
CPC分类号： C01D9/16 , B01J2/04 , C01D9/18

37. 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。

38. 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。

39. 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

40. 发明授权

US1610485A Process for the removal of borax from alkali-metal nitrates 失效
标题翻译：从碱金属硝酸盐中除去硼砂的工艺
公开(公告)号：US1610485A
公开(公告)日：1926-12-14
申请号：US72865524
申请日：1924-07-28
申请人： FED PHOSPHORUS CO
发明人： BOOTH CHARLES F , PAUL LOGUE
IPC分类号： C01D9/16
CPC分类号： C01D9/16

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